African Journal of Traditional, Complementary and Alternative Medicines

Published by African Journals Online

Online ISSN: 2505-0044

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Print ISSN: 0189-6016

Articles


Analysis on 113 Cases of Adverse Reactions Caused by β-Lactam Antibiotics
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June 2013

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44 Reads

Jianquan Lu

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Unlabelled: The objectives of this study were to learn about the characteristics and rules of the occurrence of adverse reactions caused by lactam antibiotics and provide a reference for clinical drug use. Methods: A retrospective study was made to analyse the 113 case reports of adverse reactions caused by β-lactam antibiotics collected in our hospital between 2007 and 2009. Results: 113 cases of ADR involved 17 kinds of β-lactam antibiotics, headed by ceftriaxone sodium. The most common manifestation was skin and accessory damage; nervous system and gastrointestinal system damage were also easier to find, and the administration route was mainly intravenous infusion. Conclusion: The clinical application of β-lactam antibiotics should pay attention to adverse reaction monitoring and rational drug use to reduce the incidence of adverse reactions.
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Table 1 : Plants from the Ferkessedougou region screened for their in vitro activity against Streptococcus pneumoniae. 
Table 2 : Values of inhibitory concentrations (µg/ml) of active plant species and antibiotics 
Evaluation of 17 Medicinal Plants from Northern Côte D'Ivoire for their In Vitro Activity Against Streptococcus Pneumoniae
  • Article
  • Full-text available

August 2006

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162 Reads

Twenty crude extracts from 17 species out of 11 families were assessed for their antibacterial activity against Streptococcus pneumoniae (Pneumococcus). The selected plants are used in Northern Côte d'Ivoire to treat various infections including respiratory track diseases. From all the tested extracts, only 7 from 6 plants showed a promising in vitro bactericidal activity against Pneumococcus, including strains resistant to penicillin. The most active extracts were from Erythrina senegalensis (Fabaceae), Piliostigma thonningii (Caesalpiniaceae), Waltheria indica (Sterculiaceae), Andira inermis (Fabaceae), Uapaca togoensis (Euphorbiaceae), Keetia hispida (Rubiaceae) and Combretum molle (Combretaceae). This is the first time that the antipneumococcal activity of the tested plants is reported. The results of this preliminary investigation support the traditional use of these plants in the treatment of pneumococcal infections. The most active of them could be candidates for isolation of compounds which could serve as lead structures for the development of new drugs against Streptococcus pneumoniae.
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Effect Of Cycloart-24-En-3β-Ol From Euphorbia royleana Latex On Neuroenzyme Ache And Oxidative Metabolism Of Freshwater Fish, Channa punctatus

October 2008

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45 Reads

Cycloart-24-en-3beta-ol isolated from Euphorbia royleana latex possesses potent piscicidal activity against freshwater predatory fish Channa punctatus. Their short as well as long-term exposure causes significant (P<0.05) time and dose-dependent reversible alteration in the oxidative metabolism of the fish Channa punctatus Cycloart-24-en-3beta-ol also shifts fish respiratory pathway, inhibits energy production and AChE activity reversibly may be advantageous for their use as environmentally safe piscicide for controlling the predatory fish C. punctatus population from carp culture ponds.

Figure 1: The influence of the crude extracts of Bowiea volubilis on the metabolic activity of A) CYP1A2, B) CYP2C9, C) CYP2C19 and D) CYP3A4.  
Figure 3: The influence of the crude extracts of Tulbaghia violacea on the metabolic activity of A) CYP1A2, B) CYP2C9, C) CYP2C19 and D) CYP3A4.
Table 3 : Summary of the inhibitory effects of the medicinal herbs on CYP1A2, CYP2C9, CYP2C19 and CYP3A4
The Inhibitory Activity of the Extracts of Popular Medicinal Herbs on CYP1A2, 2C9, 2C19 and 3A4 and the Implications for Herb-Drug Interaction

August 2014

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130 Reads

Background: Studies have suggested an increasing practice of concurrent herb-drug consumption. One of the major clinical risks of such concomitant herb-drug use is pharmacokinetic herb-drug interaction (HDI). This is brought about by the ability of phytochemicals to inhibit or induce the activity of metabolic enzymes. The aim of this study was to investigate the potential of the crude aqueous extracts of three popular medicinal herbs used in South Africa to inhibit major cytochrome P450 (CYP) enzymes. Materials and methods: The extracts of Bowiea volubilis, Spirostachys africana and Tulbaghia violacea were incubated with human liver microsomes (HLM) to monitor the phenacetin O-deethylation, diclofenac 4'-hydroxylation, S-mephenytoin 4'-hydroxylation and testosterone 6β-hydroxylation as respective probe reactions for CYP1A2, CYP2C9, CYP2C19 and CYP3A4. The inhibitory activity, where observed, was profiled against the extract concentration. Results: Extracts of Bowiea volubilis inhibited the metabolic activity of CYP1A2 and CYP3A4 with IC50 values of 92.3 ± 5.5 µg/mL and 8.1 ± 0.6 µg/mL respectively. Similar observation with Spirostachys africana showed inhibitory activity against CYP1A2 and CYP3A4 with respective IC50 values of 14.3 ± 0.6 µg/mL and 47.4 ± 2.4 µg/mL. Tulbaghia violacea demonstrated relatively weak inhibitory activity against CYP1A2 (767.4 ± 10.8 µg/mL) and CYP2C9 (921 ± 15.3 µg/mL). Conclusion: The results suggest the potential for HDI between the herbs and the substrates of the affected enzymes, if sufficient in vivo concentration is attained.

Figure 2: NIH 3T3 cell viability (MTT) in response to different concentrations of calcium carbonate nanocrystals. 
Figure 3: Neutral Red/Trypan Blue Exclusion Assay for cells viability. 
Biocompatibility of Bio Based Calcium Carbonate Nanocrystals Aragonite Polymorph on NIH 3T3 Fibroblast Cell Line

November 2014

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334 Reads

Background: Currently, there has been extensive research interest for inorganic nanocrystals such as calcium phosphate, iron oxide, silicone, carbon nanotube and layered double hydroxide as a drug delivery system especially in cancer therapy. However, toxicological screening of such particles is paramount importance before use as delivery carrier. In this study we examine the biocompatibility of CaCO3 nanocrystal on NIH 3T3 cell line. Material and methods: Transmission and field emission scanning electron microscopy (TEM and FESEM) were used for the characterisation of CaCO3 nanocrystals. Cytotoxicity and genotoxic effect of calcium carbonate nanocrystals in cultured mouse embryonic fibroblast NIH 3T3 cell line using various bioassays including MTT, and Neutral red/Trypan blue double-staining assays. LDH, BrdU and reactive oxygen species were used for toxicity analysis. Cellular morphology was examined by scanning electron microscopy (SEM) and confocal fluorescence microscope. Results: The outcome of the analyses revealed a clear rod-shaped aragonite polymorph of calcium carbonate nanocrystal. The analysed cytotoxic and genotoxicity of CaCO3 nanocrystal on NIH 3T3 cells using different bioassays revealed no significance differences as compared to control. A slight decrease in cell viability was noticed when the cells were exposed to higher concentrations of 200 to 400 µg/ml, while increase in ROS generation and LDH released at 200 and 400 µg/ml was observed. Conclusions: The study has shown that CaCO3 nanocrystal is biocompatible and non toxic to NIH 3T3 fibroblast cells. The analysed results offer a promising potential of CaCO3 nanocrystal for the development of intracellular drugs, genes and other macromolecule delivery systems.

Figure 6: Concentration course experiment for andrographolide-induction internucleosomal DNA fragmentation T47-D human breast cancer cells , analysis by electrophoresis gel. Lane1. untreated cells cultured ( DMSO 0,1% ). Lane 2. cells were treated with 0.35 mM andrographolide. Lane 3 cells were treated with 0.70 mM andrographolide. Lane 4 cells were treated with 1.40 mM andrographolide. 
Figure 7: Concentration course experiment for andrographolide-induction increased expression of p53 from T47-D human breast cancer cells , analysis by immunohistochemical.. Data represent mean ± SEM of triplicate. * p < 0.05 compared to control ( One Way ANOVA followed by Tukey's multiple comparison test). 
Figure 8. Concentration course experiment for andrographolide-induction increased expression of bax from T47-D human breast cancer cells , analysis by immunohistochemical.. Data represent mean ± SEM of triplicate. * p < 0.05 compared to control ( One Way ANOVA followed by Tukey's multiple comparison test). 
Figure 9: Concentration course experiment for andrographolide-induction dereased expression of bcl-2 from T47-D human breast cancer cells , analysis by immunohistochemical.. Data represent mean ± SEM of triplicate. * p < 0.05 compared to control ( One Way ANOVA followed by Tukey's multiple comparison test). 
Apoptosis Inducing Effect Of Andrographolide On TF-47 Human Breast Cancer Cell Line

February 2007

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302 Reads

Andrographolide isolated from Andrographis paniculata Ness (Acanthaceae) at 0.35 mM, 0.70 mM and 1.40 mM induced DNA fragmentation and increased the percentage of apoptotic cells when TD-47 human breast cancer cell line was treated for 24, 48 and 72 h. The results demonstrated that andrographolide can induce apoptosis in TD-47 human breast cancer cell line in a time and concentration-dependent manner by increase expression of p53, bax, caspase-3 and decrease expression of bcl-2 determined by immunohistochemical analysis.

Distribution of ages and gender of the patients with adverse reactions
Varieties and proportions of 8 Chinese medicine injections causing adverse reactions
Family history of allergies
Analysis And Study On 47 Cases Of Adverse Reactions Of Chinese Medicine Injection

July 2014

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19 Reads

Along with efficacy, Chinese medicine is increasingly being known to people, Chinese medicine and its preparations are increasingly widespread in clinical use. People generally believe that Chinese medicine has few side effects and is safe, especially Chinese medicine injections. Due to the direct injection in blood, rapid onset and good efficacy, they are welcomed by people. However, with increased use, adverse reactions are increasing, even causing serious consequences. The objective is to learn about the characteristics and laws of the adverse effects of Chinese medicine injections, provide references for the clinical safe drug use, and reduce the incidence of adverse reactions. The method was established to analyze the data of 47 cases of adverse reactions caused by Chinese medicine injections in our hospital from the year, 2009 to 2010. The organs / systems involved in the 47 cases of adverse reactions are primarily skin and its accessories and secondly systemic damage, involving a total of eight varieties of drugs. The adverse reactions of Chinese medicine injections are mostly in Chinese patent drugs, which should be paid attention to, to find out the problems and laws, use the drugs rationally, and reduce the incidence of the adverse reactions.

An Evaluation on Levels of Knowledge, Attitude and Behavior of People at 65 Years and Above About Alternative Medicine Living in Ankara

October 2012

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28 Reads

The aim was to determine the knowledge, attitude and behavioral levels of people at and above 65 years of age, living in Ankara (Turkey) about alternative medicine. The study was carried out between March - April 2010 through survey application of 200 participants by selective random sampling from the population. Data obtained as a result of the survey were analyzed by SPSS program. The study revealed that 83.5% of the participants believed in alternative therapy methods but 16.5% of them did not. It is concluded that herbal therapy methods are the most frequently used methods with a 63% rate among other alternative therapy methods. When status of the participants was analyzed it was found that it was found that 69% received the information about alternative medicines from their family while 53.5% received it from television This study revealed that alternative medicine is profoundly used by people above 65 years of age in Ankara.

Figure 2: Histopathological features of control and experimental hamsters in each group  
Clerodendron inerme Protects Cellular Integrity During 7,12- Dimethylbenz[A]-Anthracene Induced Hamster Buccal Pouch Carcinogenesis

April 2008

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42 Reads

Aim of the present study was to investigate the protective effect of Clerodendron inerme on cellular integrity by measuring the status of glycoconjugates, lipids, osmotic fragility, and membrane bound enzyme activity in 7,12-dimethylbenz (a) anthracene (DMBA)-induced oral carcinogenesis. Oral squamous cell carcinoma was induced in the buccal pouch of Syrian golden hamsters by painting with 0.5% DMBA in liquid paraffin thrice a week for 14 weeks. The levels of glycoconjugates, lipids, osmotic fragility and membrane bound enzyme activity were analyzed by using specific colorimetric methods. We observed 100% tumor formation in DMBA painted hamsters. Altered glycoconjugates and lipid pattern were observed in DMBA painted hamsters as compared to control hamsters. Erythrocytes from DMBA painted hamsters were more fragile than those from control hamsters. The activity of membrane bound enzyme (Na(+) K(+) ATPase) decreased in DMBA painted hamsters as compared to control hamsters. Oral administration of aqueous leaf extract of Clerodendron inerme (CiALet) at a dose of 500 mg/kg body weight significantly prevented the tumor formation and histopathological abnormalities as well as normalized the above said biochemical variables in DMBA painted hamsters. Our results thus demonstrate the protective effect of Clerodendron inerme on cellular integrity during DMBA induced oral carcinogenesis.

Figure. 3: Fold increase in the mRNA expression pattern for NF-κB and Cyclin D1 in hamsters treated with DMBA alone, DMBA + carnosic acid and carnosic acid alone. Values are expressed as mean ± SD for 10 hamsters in each group. Values that do not share a common superscript letter in the same column differ significantly at p < 0.05. (Analysis of variance followed by DMRT). 
Proapoptotic, Anti-Cell Proliferative, Anti-Inflammatory And Antiangiogenic Potential Of Carnosic Acid During 7,12 Dimethylbenz[A]Anthracene-Induced Hamster Buccal Pouch Carcinogenesis

October 2012

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66 Reads

The present study has investigated the modulating effect of carnosic acid on the expression pattern of cell proliferative (proliferating cell nuclear antigen (PCNA) cyclin D1 and a transcription factor c-fos), apoptotic (p53, Bcl-2, Bax caspase -3 and 9), inflammatory (Nuclear factor kappa B (NFκB) and cyclooxygenase-2 (COX- 2) and angiogenic (vascular endothelial growth factor (VEGF) markers during 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch carcinogenesis. Oral tumors were developed in the hamsters buccal pouches by painting with 0.5% DMBA in liquid paraffin three times a week for 14 weeks. Hundred per cent tumour formation (well-differentiated squamous cell carcinoma) accompanied by deregulation in the above mentioned molecular markers was noticed in hamsters treated with DMBA alone (tumour bearing hamsters). Oral administration of carnosic acid at dose of 10mg/kg bw to hamsters treated with DMBA not only completely prevented the tumour formation, but also corrected the abnormalities in the expression pattern of molecular markers. The present study suggests that carnosic acid might have inhibited the tumour formation by exerting anti-cell-proliferative, anti-inflammatory, anti-angiogenic and apoptotic potential during DMBA-induced hamster buccal pouch carcinogenesis.

Table 1: Protein bound hexose, hexosamine, total sialic acid, lipid bound sialic acid and fucose in plasma of control and experimental rats. 
Figure 1a) Glycoconjugates expression pattern in mammary tissues of the control rats Figure 1b) Over expression of glycoconjugates in the mammary tissues of tumor bearing rats
Figure 1c) Decreased expression of glycoconjugates in DMBA-induced mammary cancer rats treated with genistein + daidzein.
Table 2: Protein bound hexose, hexosamine, total sialic acid levels in mammary tissues of control and experimental rats. 
Table 3: Protein bound hexose, hexosamine, total sialic acid levels in erythrocyte membranes of control and experimental rats. 
Genistein and Daidzein, in Combination, Protect Cellular Integrity during 7,12-Dimethylbenz[a]anthracene (DMBA) Induced Mammary Carcinogenesis in Sprague-Dawley Rats

January 2011

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142 Reads

The status of glycoconjugates (protein bound hexose, hexosamine, sialic acid and fucose) in plasma or serum serve as potential biomarkers for assessing tumor progression and therapeutic interventions. Aim of the present study was to investigate the protective effect of two major soy isoflavones, genistein and daidzein, in combination on the status of glycoconjugates in plasma, erythrocyte membrane and mammary tissues during 7,12-dimethylbenz[a]anthracene (DMBA) induced mammary carcinogenesis in female Sprague-Dawley rats. A single subcutaneous injection of DMBA (25 mg rat(-1)) in the mammary gland developed mammary carcinoma in female Sprague-Dawley rats. Elevated levels of plasma and mammary tissue glycoconjugates accompanied by reduction in erythrocyte membrane glycoconjugates were observed in rats bearing mammary tumors. Oral administration of genistein + daidzein (20 mg + 20 mg kg(-1) bw/day) to DMBA treated rats significantly (p< 0.05) brought back the status of glycoconjugates to near normal range. The present study thus demonstrated that genistein and daidzein in combination protected the structural integrity of the cell surface and membranes during DMBA-induced mammary carcinogenesis.

Table 1 .: Effect of ferulic acid on DMBA-induced bone marrow micronuclei formation 
Table 2 .: Mitotic index and frequencies of chromosomal abnormalities in experimental and control animals 
Table 3 : Plasma TBARS and antioxidants in control and experimental animals. 
Antigenotoxic Effect Of Ferulic Acid In 7,12-Dimethyl Benz(A)- Anthracene (Dmba) Induced Genotoxicity

October 2007

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82 Reads

The antigenotoxic effect of ferulic acid was carried out by evaluating the cytogenetic markers, the micronuclei frequency and chromosomal aberrations, in the bone marrow of hamsters in 7,12-dimethylbenz(a)anthracene (DMBA) induced genotoxicity. Genotoxicity was induced in experimental hamsters by single intraperitoneal injection of DMBA (30 mg kg(-1) b.w.). Pretreatment of ferulic acid orally at a dose of 40 mg kg(-1) b.w. for five days significantly reduced the frequency of micronucleated polychromatic erythrocytes (MnPCEs) and the percentage of chromosomal aberrations in hamster's bone marrow. Our results thus suggest that ferulic acid has potent antigenotoxic effect in DMBA induced genotoxicity in golden Syrian hamsters.

The Anti-Tumor Effect and Biological Activities of the Extract JMM6 from the Stem-Barks of the Chinese Juglans Mandshurica Maxim on Human Hepatoma Cell Line Bel-7402

December 2012

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51 Reads

Juglans mandshurica Maxim is a traditional herbal medicines in China, and its anti-tumor bioactivities are of research interest. Bioassay-guided fractionation method was employed to isolate anti-tumor compounds from the stem barks of the Juglans mandshurica Maxim. The anti-tumor effect and biological activities of the extracted compound JMM6 were studied in BEL-7402 cells by MTT, Cell cycle analysis, Hoechst 33342 staining, Annexin V-FITC/PI assay and Detection of mitochondrial membrane potential (ΔΨm). After treatment with the JMM6, the growth of BEL-7402 cells was inhibited and cells displayed typical morphological apoptotic characteristics. Further investigations revealed that treatment with JMM6 mainly caused G2/M cell cycle arrest and induced apoptosis in BEL-7402 cells. To evaluate the alteration of mitochondria in JMM6 induced apoptosis. The data showed that JMM6 decreased significantly the ΔΨm, causing the depolarization of the mitochondrial membrane. Our results show that the JMM6 will have a potential advantage of anti-tumor, less harmful to normal cells. This paper not only summarized the JMM6 pick-up technology from Juglans mandshurica Maxim and biological characteristic, but also may provide further evidence to exploit the potential medicine compounds from the stem-barks of the Chinese Juglans mandshurica Maxim.

A Study on the Inhibitory Effect of Matrine on Gastric Cancer SGC-7901 Cells

March 2013

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16 Reads

The objective of this paper was to investigate the antitumour mechanism of action of matrine by studying its inhibitory effect on gastric cancer SGC-7901 cells. SGC-7901 cells were chosen, and cell-killing capacity of matrine on gastric cancer SGC-7901 cells was determined using MTT assay and single PI staining assay. The results showed that matrine had an inhibitory effect on gastric cancer SGC-7901 cells, which was somewhat dose-dependent. The study concluded that matrine has a significant in-vitro inhibitory effect on SGC-7901 tumour cells, influences cell cycle of SGC-7901 cells, and induces their apoptosis.

Analysis on 85 Case Reports of Adverse Drug Reactions

May 2013

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6 Reads

This study investigated the occurrence and characteristics of adverse drug reactions (ADR) in our hospital and provide references for clinical rational drug use. We collected the 85 case reports of adverse drug reactions in our hospital in 2010 and made retrospective statistical analysis on them. The varieties of anti-infective drugs used are the most used. It also had the highest proportion of adverse drug reactions; the common symptom of adverse drug reactions is skin and accessory damage. Adverse drug reactions are affected by many factors, and relevant departments should strengthen ADR monitoring, to reduce or avoid the occurrence of adverse drug reactions.

Figure 1: Frequency of plant families used in Dehloran and Abdanan district, Ilam province, Iran 
Figure 2: Frequency of habit plants used in Dehloran and Abdanan district, Ilam province, Iran 
Figure 3: Frequency of plant parts used in Dehloran and Abdanan district, Ilam province, Iran 
Figure 4: Landscape of cover plants on rangelands in Ilam province, Iran 
Ethnobotanical Study of Medicinal Plants Used by Kurd Tribe in Dehloran and Abdanan Districts, Ilam Province, Iran

November 2012

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808 Reads

This paper provides significant ethnobotanical information on pharmaceutical plant uses, where some degree of acculturation exists, so that there is urgency in recording such data. The aim of this work is to catalogue, document, and make known the uses of plants for folk medicine in Dehloran and Abdanan districts, Ilam Province, Iran. An analysis was made of the species used, parts of the plant employed, preparation methods, administration means, and the ailments treated in relation to pathological groups. A folk botanical survey was carried out from February 2007 to October 2009. The information was collected from 81 persons (60% men and 40% women) in 20 villages. The informants reported data on 122 species, belonging to 49 botanical families, were claimed as medicinal. This work is focused on human medicinal plant uses, which represent 95% of the pharmaceutical uses. The most commonly represented families were Asteraceae (37.5%), Lamiaceae (20.8%), Rosaceae (18.7%), Fabaceae (16.7%) and Apiaceae (14.6%). Some of the uses were found to be new when compared with published literature on ethnomedicine of Iran. The folk knowledge about medicinal plant use is still alive in the studied region, and a number of scarcely reported plant uses has been detected, some of them with promising phytotherapeutical applications. The results of the study reveal that some of species play an important role in primary healthcare system of these tribal communities.

The Effects of Crude Aqueous and Alcohol Extracts of Aloe Vera on Growth and Abdominal Viscera of Suckling Rats

July 2012

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62 Reads

The gastrointestinal tract of neonates is sensitive to dietary manipulations. When nursing mothers use Aloe vera, their babies are at risk of indirect exposure to Aloe vera via breast feeding or directly as health supplements. The effects of orally administered extracts of Aloe vera in unweaned rats were investigated. Six day old Sprague-Dawley rats were gavaged with aqueous or alcohol extracts of Aloe vera (low dose 50mg. kg(-1) or high dose 500mg. kg(-1)) daily for eight days. All data were expressed as mean ± SD and analyzed by one way ANOVA. Pups receiving high doses of either extract had a significantly higher body mass gain than the group receiving lower dose (p < 0.05). Tibial length was significantly increased in the high dose aqueous extract group (15-26 %). The differences in growth could not be attributed to circulating insulin-like growth factor-1 as the levels were not significantly different. The caecum was significantly enlarged in the rats that received the high doses of both extracts. Although, there was no significant difference in the non-fasting plasma concentration of glucose and triglycerides, the hepatic lipid and glycogen content were significantly higher (p < 0.001) for the high dose aqueous extract group. The plasma alanine transaminase was not affected by the treatments, however the high doses of the extracts significantly increased plasma alkaline phosphatase activity. Short term administration of Aloe vera extracts resulted in growth promotion, enhanced hepatic storage of metabolic substrates, increased ALP possibly in relation to bone growth and caused hypertrophy of the caecum of neonatal rats. These effects need to be explored further to enhance animal production and health.

Figure 4: Histological appearance of the lung of control animals (a) and animals treated with normal dose of Tonica extract: 28 mg kg-1 (b), 10x the normal dose: 280 mg kg-1 (c) and 20x the normal dose: 560 mg kg-1 (d) at termination showing normal alveolar areas (1) and Clara cells (2) lining a normal bronchiolar epithelial wall (3). Magnification: x66. 
Figure 5: Histological appearance of the liver of control animals (a) and animals treated with normal dose of Tonica extract: 28 mg kg-1 (b), 10x the normal dose: 280 mg kg-1 (c) and 20x the normal dose: 560 mg kg-1 (d) at termination showing no differences in appearance of hepatocytes (1) and interstitial spaces (2) compared to control. Magnification: x132. 
Absence of Organ Specific Toxicity in Rats Treated with Tonica, an Aqueous Herbal Haematinic Preparation

May 2010

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82 Reads

The sub-chronic toxicity of Tonica, an aqueous herbal haematinic prepared from the stem barks of Khaya senegalensis, Mitragyna stipulosa and Kigelia africana, was investigated in male Sprague-Dawley rats at 28, 280 and 560 mg kg(-1) day(-1), representing the normal human dose, 10x and 20x that dose, respectively for 6 weeks. The growth rate of animals over the period of treatment and certain serum biochemical and haematological indices as well as urinalysis and weight of selected organs at termination, were determined. Results show that the extract did not affect the weight gain of the animals with time or the mean wet weights of selected organs. Although there were slight but insignificant (p>0.05) elevations in WBC (16-27%) and PLT (8-11%) counts in Tonica-treated animals compared to controls at 10x and 20x the normal dose, most serum biochemical, haematological and urinalysis data indicated no significant differences (p>0.05) between tests and control rats. There were also no changes in the morphology of liver, kidney, lung and heart tissues as a result of Tonica treatment. These findings suggest that Tonica is safe at the dosage regimens administered to the animals in this study, and there appears to be no overt organ specific toxicity associated with it.

Table 2 . NP-SH, vitamin C and Vitamin E level in plasma and reduced GSH in RBC 
Role Of Wormwood (Artemisia absinthium) Extract On Oxidative Stress In Ameliorating Lead Induced Haematotoxicity.

October 2008

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396 Reads

Effects of ROS generation have been postulated to be major contributors to lead-exposure related disease. The aim of the study was to investigate the effect of aqueous extract of wormwood (Artemisia absinthium) on oxidative stress in rats protractedly exposed to lead. Aqueous extract of wormwood plant was administered orally (200 mg x kg(-1) body weight). Plasma vitamin C, E and non-protein thiol concentrations, red blood cells (RBC) thiobarbituric acid reactive substances, reduced glutathione levels and haemolysis test were evaluated. In addition, RBC antioxidant enzymes activities such as superoxide dismutases, catalase, glutathione peroxidase, glutathione reductase were also estimated. After 11-weeks, significant decreases of plasma vitamin C, E, non protein-thiol (NP-SH) and RBC-reduced glutathione levels were observed in Pb compared to control group (-32.9%, -57.1%, -53.1%, -33.9%, respectively); superoxide dismutase, glutathione peroxidase, uric aminolevulinic acid and haemolysis test significantly increased in Pb compared to control group (+64.3%, +40.3%, +145%, +44.3%, respectively). In our investigation, after 4-weeks of treatment all treated groups did not show any difference compared to the control group, except for glutathione peroxidase and RBC-superoxide dismutase activity (-15.7% and +16.4%, respectively). The findings of this study suggest that wormwood (Artemisia absinthium) extract restored the enzymes activities perturbed by exposure to lead, and had a protective role against lipid peroxidation.

In Vivo Screening Of Antimalarial Activity Of Acacia mellifera (Benth) (Leguminosae) On Plasmodium berghei In Mice

October 2007

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102 Reads

The activities of total extracts and lupane triterpenes, isolated from the stem bark of Acacia mellifera, were evaluated against Plasmodium berghei strain ANKA in a female Swiss mouse model. Five isolated compounds and the crude extracts were evaluated for antimalarial activity and Quinine hydrochloride was used as a positive control. Only betulin and the methanolic extract produced considerable antimalarial activity in mice infected with P. berghei parasites. This study demonstrated the presence of bioactive agents in Acacia mellifera.

Table 1 . 1 H NMR spectral data of compounds (20S)-oxolupane-30-al, (20R)-oxolupane-30-al, and betulinic acid 
Table 2 . 13 C NMR spectral data of compounds (20S)-oxolupane-30-al, (20R)-oxolupane-30-al, and betulinic acid (Spectra recorded at 50.3 MHz in CDCl 3 at 25 0 C) 
Antimicrobial Activity of Pentacyclic Triterpenes Isolated from Acacia Mellifera

October 2008

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338 Reads

Acacia mellifera has been used widely in traditional African medicines against various diseases. Among the Kipsigis community of Kenya, water extracts from the plant is used for the treatment of skin diseases, coughs and gastrointestinal ailments. The aim of the study was to provide scientific rationale for the use of the plant in traditional medicine through bioassay-guided fractionation of A. mellifera stem bark. Bioactivity testing was done against selected microbes using disc diffusion technique as outlined in Clinical Laboratory Standard Institute (CLSI). Structure elucidation of the isolated compounds was based primarily on 1D and 2D NMR analyses, including HMQC, HMBC, and NOESY correlations. Fractionation yielded three triterpenoids; (20S)-oxolupane-30-al, (20R)-oxolupane-30-al, and betulinic acid. The three compounds were active against Staphylococcus aureus ATCC 25923 and only (20S)-oxolupane-30-al against clinical isolate of Microsporum gypseum. The three compounds had no activity against Escherichia coli ATCC 25922, Enterococcus feacalis, Candida albicans ATCC 90028, Cryptococcus neoformans, Trichophyton mentagrophyte, Candida krusei, Microsporum gypseum, and Sacharomyces cerevisiae. These results explain and support the use of A. mellifera stem barks for the treatment of infectious diseases in traditional Kenya medicine. It also shows that the antimicrobial activity is concentrated in the triterpenoid fractions.

Figure 1: Prepubertal effect of oral administration of the aqueous extract of Justicia insularis on the timing of Puberty onset. Shown on the left are mean day of vaginal opening in control and plant extract-treated animals. Shown on the right are percentages of animal showing vaginal opening as a function of age in the control and plant extract-treated animals. *,**Values significantly different at p < 0.05 and p<0.01 from those of the control group (Kruskal-Wallis, Mann-Whitney tests for histograms and Khi Square , Fisher Exact tests for lines); each data represents the mean ± s.e.m of 20 animals.
Effect of the Aqueous Extract of Justicia Insularis T. Anders (Acanthaceae) on Ovarian Folliculogenesis and Fertility of Female Rats

January 2012

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204 Reads

Justicia insularis T. Anders (Acanthaceae) is a medicinal plant whose leaves and those of three other plants are mixed for the preparation of a concoction used to improve fertility and to reduce labour pains in women of the Western Region of Cameroon. Previous studies have demonstrated the inducing potential on ovarian folliculogenesis and steroidogenesis of the aqueous extract of the leaf mixture (ADHJ) of four medicinal plants (Aloe buettneri, Dicliptera verticillata, Hibiscus macranthus and Justicia insularis) among which the later represented the highest proportion. This study was aimed at evaluating the ovarian inducing potential of J. insularis in immature female rats. Various doses of the aqueous extract of J. insularis were daily and orally given, for 20 days, to immature female rats distributed into four experimental groups of twenty animals each. At the end of the experimental period some biochemical and physiological parameters of ovarian function were assayed. The administration of the aqueous extract of Justicia insularis significantly induced an early vaginal opening in all treated groups (P < 0.001) as well as an increase (at doses of 50 or 100 mg/kg) in the number of hemorrhagic points, Corpus luteum, implantation sites, ovarian weight, uterine and ovarian proteins. Ovarian cholesterol level (P < 0.05) significantly decreased in animals treated with the lowest dose (12.5 mg/kg). The evaluation of the toxicological effects of the extract on pregnancy showed that it significantly increased pre- and post-implantation losses, resorption index and decreased the rate of nidation as well as litter's weight. These results suggest that the aqueous extract of Justicia insularis induces ovarian folliculogenesis thus justifying its high proportion in the leaf mixture of ADHJ.

Table 1 : Percentage Inhibition of Strongylid nematode egg hatch in various concentrations of leaf extract of A. montanus, albendazole and distilled water. 
Table 2 : Percentage inhibition of Strongylid larvae in aqueous extract of Acanthus montanus, Albendazole and Distilled Water on Day 1. 
Table 3 : Percentage inhibition of strongylid larvae in aqueous extract of A. montanus, albendazole and distilled water on Day 2. 
Table 4 : Percentage Inhibition of Strongylid larvae in aqueous extract of Acanthus montanus, Albendazole and Distilled water on Day 3. 
Table 6 : Mean Percentage Inhibition of Strongylid larvae in aqueous extract of Acanthus montanus, Albendazole and Distilled water on Day 1, 2, 3, and 4. 
Anthelminthic Efficacy of Aqueous Extract of Acanthus Montanus Leaf Against Strongylid Nematodes of Small Ruminants

July 2010

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328 Reads

The anthelminthic efficacy of the crude aqueous extract of Acanthus montanus (Nees) T. Anders (Acanthaceae) against strongylid nematodes of small ruminants was investigated using the in-vitro egg hatch and larval growth inhibition assays. Faecal samples collected per rectum from sheep and goats were subjected to parasitological examination using the McMaster counting technique with a yield of 700 eggs per gram (E.P.G.) of faeces. Crude aqueous leaf extract of Acanthus montanus was extracted using cold water extraction with a yield of 13.01% w/w. Egg hatch assay revealed a 91.75% reduction in egg hatch at concentration of 25 mg/ml of the extract. The extract had a 100% inhibition, at 200mg/ml concentration which was equivalent to the activity of 3.125 mg/ml albendazole. The distilled water control however, showed a 0% inhibition. Larval growth inhibition assay results showed the extract on Day 1 at 25 mg/ml and 200mg/ml concentrations yielded 67.02% and 85.26% larval inhibition. On Day 2, 100% inhibition was obtained on all concentrations of the extract except for 25 mg/ml that yielded 88.30%. Albendazole however, had a 100% larval inhibition for all concentrations on Day 2. A 100% larval inhibition was recorded on Day 3 from the 25 mg/ml concentrations. The mean percentage larval inhibition of the extract at 200mg/ml (92.63%) was comparable to the standard anthelminthic (albendazole) at 12.50mg/ml (92.28%). These findings showed that there is a pharmacological basis for the folkloric claim of the anthelminthic effect of Acanthus montanus.

Table 3 : Factors predicting acceptability of male circumcision (Would you be supportive that all men should be circumcised) 
Prevalence and Acceptability of Male Circumcision in South Africa

August 2014

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1,431 Reads

Background: The objectives of the current national study were to determine the rates of self-reported circumcision among South African men and, more importantly, evaluate the acceptability of male circumcision in South Africa by uncircumcised adult men and all adult women. Materials and methods: The study based on a population-based survey included a nationally representative subgroup of 6654 men aged 15 years and older who where included in the analysis on male circumcision prevalence, and a subgroup of 6796 women aged 15 to 49 years who were included in the analysis on male circumcision acceptance. Results: An overall prevalence of self-reported male circumcision of 42.8% was found. Among the Black African population group the prevalence of male circumcision was 48.2%, 32.1% were traditionally and 13.4% were medically circumcised. Among males not circumcised 45.7% of 15-24 years olds indicated that they would consider being circumcised compared to 28.3% among 25-49 years olds. In multivariate analysis among non-circumcised men Black African and Coloured population groups and having heard of the HIV protective effect of male circumcision were significant predictors for male circumcision acceptability, and among women with a non-circumcised sexual partner, Black African and Coloured population groups and higher education were predictors for male circumcision acceptability. Conclusion: The study found high rates and high acceptability of male circumcision. Findings associated with the acceptability of male circumcision can be used to increase awareness of the benefits of male circumcision for HIV prevention.

Histological Changes in Male Accessory Reproductive Organs in Rats Exposed to Cigarette Smoke and the Protective Effect of Honey Supplementation

September 2012

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153 Reads

The effect of cigarette smoke (CS) on histology of male accessory reproductive organs and the possible protective effect of honey supplementation in rats were investigated in this study. Rats received distilled water, honey, CS exposure or honey plus CS exposure. Honey (1.2 g/kg body weight/day) was administered by gavage and CS exposure (3 times per day) was done in a chamber for 13 weeks. CS exposure significantly increased relative weight of epididymis and ventral prostate. There were also significantly increased number of clear cells and epithelial height of cauda epididymis as well as severe interstitial oedema and decreased epithelial height of prostate gland. However, with the supplementation of honey, these histological changes were significantly reversed suggesting the protective effect of honey against the toxic effect of CS on male accessory reproductive organs in rats.

Figure 1: The normal rat liver section (x400 final magnification) from rat treated with olive oil and double-distilled water (untreated control group).  
Figure 2: The liver section (x400 final magnification) from rat treated with carbon tetrachloride alone (control model) showing fragmentation of the nuclei of hepatocytes, some degree of edema and lymphocytic infiltration around the hepatic central vein 24 hr postinduction with carbon tetrachloride.  
Figure 3: The liver section (x400 final magnification) from rat treated with carbon tetrachloride plus 500 mg/kg/oral route of Musanga extract showing focal fragmentation of the hepatocytes nuclei with no lymphatic infiltration.  
Figure 4: The liver section (x400 final magnification) from rat treated with acetaminophen alone showing the porta triads and diffuse vacuolar degeneration and picnotic nuclei of the hepatocytes.'  
Figure 5: The liver section (x400 final magnification) from rat treated with acetaminophen plus 500 mg/kg/oral route of Musanga extract showing the porta triads and focal vacuolar degeneration and picnotic nuclei alternating with areas of normal hepatocytes.'  
Protective Activity of the Stem Bark Aqueous Extract of Musanga Cecropioides in Carbon Tetrachloride- and Acetaminophen-induced Acute Hepatotoxicity in Rats

March 2009

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153 Reads

The hepatoprotective activities and the mechanisms of actions of Musanga cecropioides stem bark aqueous extract (MCW) were investigated on acute hepatocellular injuries induced by intraperitoneal (IP) carbon tetrachloride (CCl(4)) (20% CCl(4)/olive oil, 1.5 mL/kg) and 800 mg/kg/IP of acetaminophen (APAP) in normal saline, in male Wistar rats. Among the Yorubas (South-West Nigeria), cold decoction of MCW is used as a natural antidote for oral gastric poisonings, infective hepatitis and other liver diseases. Its hepatoprotective activities were monitored by assaying for the serum aminotransferases, ornithine carbamoyl transferase and the toxicant-induced histopathological lesions in rat livers 24 hours post-induction. These enzymes are markers of acute hepatic injuries and their elevations are indications of acute liver injuries. Pretreatment of rats with graded doses (125 - 500 mg/kg) of MCW significantly attenuated the acute elevation of the liver enzymes and the hepatotoxin-induced histopathological lesions in the rat livers. The presence of two active natural antioxidants (flavonoids and alkaloids) in high concentrations in MCW may account for the hepatoprotective activities observed in this study. These results, thus, support the folkloric use of MCW for treatment of hepatic injuries resulting from acute gastric poisonings, infective hepatitis or other liver diseases.

In Vivo Activity of (8-Hydroxymethylen)-Trieicosanyl Acetate Against Trypanosoma Cruzi during Acute Phase of the Infection

July 2011

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68 Reads

The antiprotozoal activity in vivo against Trypanosoma cruzi of (8-hydroxymethylen)-trieicosanyl acetate was evaluated in BALB/c mice during the acute phase of Chagas' disease (15 days after infection). Animals were treated during 15 days at doses of 16.8 and 33.6 µg/g, reduced parasitemia of 77.6 and 64.1% was observed respectively, in comparison with positive control mice (allopurinol 8.5 µg/g) which reduced only 29.7%. Also, amastigote nests in cardiac tissue were significant reduced in treated mice groups. The regression of effect induced after the suppression of the treatment with the compound was evaluated; animals were infected and simultaneously began the treatment with the compound during 20 days (16.8 and 33.6 µg/g). Mice were monitored after the end of the treatment for one more week. A good antitrypanosomal response was observed (66.1 and 68.9% less than untreated mice) during treatment, but 8 days after suspension of treatment, parasitemia level increased, reducing only 58.6 and 56.29 % respectively in treated animals compared with no treated.

Table 2 . Minimum inhibitory concentrations (MICs) values of the acetone extract of Senna italica tested on various microorganisms 
Evaluation of the Antioxidant, Antibacterial, and Antiproliferative Activities of the Acetone Extract of the Roots of Senna Italica (Fabaceae)

November 2009

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425 Reads

Senna italica, a member of the Fabaceae family (subfamily Caesalpinaceae), is widely used traditionally to treat a number of disease conditions, such as sexually transmitted diseases and some forms of intestinal complications. The roots of Senna italica were collected from Zebediela subregion, Limpopo province (S.A), powdered and extracted with acetone by cold/shaking extraction method. The phytochemical composition of the extract was determined by thin layer chromatography (TLC). The chromatograms were visualised with vanillin-sulphuric acid and p-anisaldehyde reagents. The total phenolic content of the extract was determined by Folin-Ciocalteu method and expressed as TAE/g dry weight. The extract was assayed for the in vitro anticancer activity using Jurkat T cells, antioxidant activity using DPPH assay and antibacterial activity by bioautographic method and the microtitre plate method. The acetone extract of the roots of Senna italica inhibited the growth of Jurkat T cells in a dose- and time-dependent manner. The extract also had free radical scavenging activity as well as reasonable antibacterial activity against Pseudomonas aeruginosa, Enterococcus faecalis, Escherichia coli and Staphylococcus aureus with MICs ranging from 0,08 to 0.16 mg/ml in the same order as ampicillin the positive control. The biological activities observed in the acetone extract validated the ethnomedicinal use of Senna italica.

Figure 1: The recorded samples taken from the ileum of rats Response to (A) added acetylcholine, (B) KCl (left arrow) or saline (right arrow), (C) KCl + extracts and (D) acetylcholine (left arrow) + extract (right arrow) 
Antispasmodic Effects of Yarrow (Achillea Millefolium L.) Extract in the Isolated Ileum of Rat

March 2013

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451 Reads

Achillea millefolium L. is cultivated in Iran and widely used in traditional medicine for gastrointestinal disorders. The aim of this study was to determine the effect of hydroalcoholic extract of A. millefolium on the contraction and relaxation of isolated ileum in rat. In this experimental study, aerial parts of A. millefolium were extracted by maceration in ethanol 70% for 72h. Terminal portion of ileum in 100 male Wistar rats was dissected and its contractions were recorded isotonically in an organ bath containing Tyrode solution (37 °C, pH 7.4) under one gram tension. Acetylcholine (1mM) and KCl (60mM) were used to create isotonic contractions. Propranolol and Nω-Nitro-L-arginine methylester hydrochloride (L-NAME) were used to investigate the mechanisms of action prior to giving the extract to the relevant groups. Data were compared by ANOVA and Turkey's post hoc test.. The results showed that the ileum contraction was induced by KCl and acetylcholine induced contraction was significantly reduced by A. millefolium extract. The cumulative concentrations of A. millefolium relaxed the KCl and acetylcholine induced contractions (n=14, p<0.001). The inhibitory effect of extract on contraction induced by KCl and acetylcholine was not significantly affected neither by propranolol (1µM) nor by L-NAME (100 µM). There was no significant difference in the rate of relaxation by propranolol and L-NAME between the two groups. In conclusion, A. millefolium can inhibit contraction of smooth muscle of ileum in rat, and it can be used for eliminating intestinal spasms. These results suggest that the relaxatory effect of A. millefolium on ileum contractions can be due to the blockade of voltage dependent calcium channels. In addition, the β-adrenoceptors, cholinergic receptors and nitric oxide production are not powerful actors in inhibitory effect of A. millefolium. So, the nitric oxide and adrenergic systems may also be involved in the antispasmodic effect of A. millefolium.

Estrogenic and Pregnancy Interceptory Effects of Achyranthes Aspera Linn. Root

August 2006

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177 Reads

Achyranthes aspera Linn. (Amaranthaceae) is an abundant indigenous herb in India. It is traditionally being used as an abortifacient. Four successive solvent extracts of the root were screened for antifertility activity in female albino rats. The chloroform and ethanol extracts exhibited 100% anti-implantation activity when given orally at 200 mg/kg body weight. Both the extracts at the dose of 200 mg/kg body weight also exhibited estrogenic activity. Histological studies of the uterus were carried out to confirm this estrogenic activity.

Figure 1: Time-response effect of various doses of the methanolic leaf extract of H. acida 
Mean blood glucose levels during a 17-day sub-chronic anti-diabetes study of the leaf extracts of H. acida in alloxan induced diabetic rats.
Anti-Diabetic Activities of the Methanol Leaf Extracts of Hymenocardia Acida (Tul.) in Alloxan-Induced Diabetic Rats

January 2012

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115 Reads

The effect of methanolic extract of Hymenocardia acida leaves on diabetes and associated lipidemia were investigated on experimentally-induced diabetic rats. The extract did not demonstrate any acutely toxic effect in rats within the dose range (250 mg/kg - 2000 mg/kg) employed in the study; hence it was well tolerated by the rats. In all experiments, the anti-diabetic effects were dose-dependent and comparable to that of glibenclamide (2 mg/kg) standard. At a dose of 500 mg/kg, lipid profile markers such as the serum total cholesterol (TC) levels, LDL-C, triglycerides and HDL-C were significantly lower (p <0.05) than those of both the treated and untreated controls.

Table 1 : Clinical and demographic characteristics of the study patients n=65 (23 men, 42 women). 
Table 3 : Effect of intervention on mean (±SD) red blood cell membranes fatty acids composition in trial groups of RRMS patients comparison to 
Erythrocyte Membrane Fatty Acids in Multiple Sclerosis Patients and Hot-Nature Dietary Intervention With Co-Supplemented Hemp-Seed and Evening-Primrose Oils

March 2013

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150 Reads

The risk of developing multiple sclerosis (MS) is associated with increased dietary intake of saturated fatty acids. For many years it has been suspected that this disease might be associated with an imbalance between unsaturated and saturated fatty acids. We determined erythrocyte membrane fatty acids levels in Hot nature dietary intervention with co-supplemented hemp seed and evening primrose oils in multiple sclerosis patients. To determine the erythrocyte membrane fatty acids levels and correlate it with expanded disability status scale (EDSS) at baseline after 6 months intervention in MS patients by gas chromatography, in this double blind, randomized trial, 100 RRMS patients with EDSS<6 were allocated into three groups: "Group A" that received co-supplemented hemp seed and evening primrose oils with advised Hot nature diet. "Group B" received olive oil and "Group C" received the co-supplemented oils. The results showed that the mean follow-up was 180±2.9SD days (N=65, 23 M and 42 F aged 34.25±8.07 years with disease duration of 6.80±4.33 years). There was no significant difference in the study parameters at baseline. After 6 months, EDSS, Immunological parameters and the erythrocyte cell membrane with regard to specific fatty acids showed improvement in the group A and C, whereas there was worsening condition for the group B after the intervention. We concluded that Hot-nature dietary intervention with co-supplemented hemp seed and evening primrose oils caused an increase PUFAs in MS patients and improvement in the erythrocyte membrane fatty acids composition. This could be an indication of restored plasma stores, and a reflection of disease severity reduction.

Remedial Applications of Silencing Ribonucleic Acids and Modalities for Its Delivery to the Kidneys - A Review

August 2014

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12 Reads

Background: The Kidney has been the target organ for the delivery of silencing ribonucleic acids (silencing RNA) administered systemically in comparison to other body tissues. Materials and method: In this review, we discussed different approaches made to delivering proteins to the kidneys in different conditions like normal and pathological defects. Data from clinical experiments have been used to discuss and support the administration of silencing RNA for the treatment of kidney diseases. Results: Results were achieved using the available genome wide RNA libraries. Conclusion: The research results are helpful in application to 3D and conventional models to find the involvement of signal pathways in kidney diseases.

Figure 1: Anti-nociceptive effect of intragastrically (i.g.) EABR on hot-plate test in mice (n=8). Values represent means ± SEM (n = 8). *P < 0.05, **P < 0.01, significantly different versus vehicle-treated group. ## P <0.01, significantly different versus control group.  
Table 1 : Effect of EABR on acetic acid-induced writhing responses in mice (n=8).
Figure 2: Effect of EABR on PGE 2 production in hind paw of mice induced by formalin (n=8). Data are means ± S.E.M. *P < 0.05, ** P < 0.01, significantly different versus control group. ## P <0.01, significantly different versus model group.  
Figure 3: Inhibition rates of EABR on TTX-S sodium peak currents (n=6). Data are means ± S.E.M. *P < 0.05, ** P < 0.01, significantly different versus control group.  
Figure 4: Influence of EABR (10 µg/ml-8 mg/ml) on TTX-S sodium peak currents (n=6).  
Ethanolic Extract of Aconiti Brachypodi Radix Attenuates Nociceptive Pain Probably Via Inhibition of Voltage-Dependent NA(+) Channel.

September 2012

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73 Reads

Aconiti Brachypodi Radix, belonging to the genus of Aconitum (Family Ranunculaceae), are used clinically as anti-rheumatic, anti-inflammatory and anti-nociceptive in traditional medicine of China. However, its mechanism and influence on nociceptive threshold are unknown and need further investigation. The analgesic effects of ethanolic extract of Aconiti Brachypodi Radix (EABR) were thus studied in vivo and in vitro. Three pain models in mice were used to assess the effect of EABR on nociceptive threshold. In vitro study was conducted to clarify the modulation of the extract on the tetrodotoxin-sensitive (TTX-S) sodium currents in rat's dorsal root ganglion (DRG) neurons using whole-cell patch clamp technique. The results showed that EABR (5-20 mg/kg, i.g.) could produce dose-dependent analgesic effect on hot-plate tests as well as writhing response induced by acetic acid. In addition, administration of 2.5-10 mg/kg EABR (i.g.) caused significant decrease in pain responses in the first and second phases of formalin test without altering the PGE2 production in the hind paw of the mice. Moreover, EABR (10 µg/ml -1 mg/ml) could suppress TTX-S voltage-gated sodium currents in a dose-dependent way, indicating the underlying electrophysiological mechanism of the analgesic effect of the folk plant medicine. Collectively, our results indicated that EABR has analgesic property in three pain models and useful influence on TTX-S sodium currents in DRG neurons, suggesting that the interference with pain messages caused by the modulation of EABR on TTX-S sodium currents in DRG neurones may explain some of its analgesic effect.

Figure 1: Effect of Acorus calamus leaves extracts (ACAE, ACME, ACHE and ACAQE) on contractile response of histamine using guinea pig ileum Values are the mean ± SE, n=5-6. p<0.001, when compared ACAE, ACME and ACAQE to vehicle control. Pheneramine maleate (50µg/ml) showed 100% inhibition on histamine response (data not shown). 
Figure 2: Effect of Acorus calamus leaves extracts (ACAE, ACME, ACHE and ACAQE) on contractile response of acetylcholine using guinea pig ileum Values are the mean ± SE, n= 5-6. p<0.001, when compared ACAE and ACME to vehicle control. Atropine sulphate (50µg/ml) showed 100% inhibition on acetylcholine response (data not shown). 
In Vitro Anticholinergic and Antihistaminic Activities of Acorus Calamus Linn. Leaves Extracts

October 2012

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402 Reads

The present investigation was aimed at determining the effects of hexane, acetone, methanol and aqueous extracts of Acorus calamus leaves (ACHE, ACAE, ACME and ACAQE) on cholinergic and histaminic system using isolated frog rectus abdominis muscle and guinea pig ileum. A dose dependent potentiation of Ach response (anticholinesterase like effect) was found with ACAE and ACME at 0.25, 0.5, 0.75 and 1 mg/ml, but at higher dose of ACAE, ACME, ACAQE and ACHE (5, 20 mg/ml) inhibit the Ach response (antinicotinic effect). These results revealed biphasic effect of Acorus calamus leaves extracts on acetylcholine induced contractile response in isolated frog rectus abdominis muscle preparation (i.e. potentiation effect at lower dose and inhibitory effect at higher dose). Studies on isolated guinea pig ileum demonstrated antihistaminic effect in a dose dependent manner (100-1000 µg/ml) with ACAE, ACME and ACAQE. In addition, the dose dependent inhibition of Ach response (antimuscarinic effect) was observed with ACAE and ACME. In conclusion, Acorus calamus leaves extracts exerts antinicotinic, anticholinesterase like activities in isolated frog rectus abdominis muscle and antihistaminic, antimuscarinic effect in guinea pig ileum. It has been suggested that these observed activities can be further studied for therapeutic potential of Acorus calamus leaves in the treatment of cognitive disorders and asthma.

Cytotoxic and Antibacteriial Actiivity of the Mixture of Olive Oil and Lime Cream in Vitro Conditions

October 2013

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54 Reads

The mixture of olive oil and lime cream has been traditionally used to treat external burns in the region of Hatay/Antakya and middle Anatolia. Olive oil and lime cream have been employed by many physicians to treat many ailments in the past. A limited number of studies have shown the antibacterial effect of olive oil and that it does not have any toxic effect on the skin. But we did not find any reported studies on the mixture of olive oil and lime cream. The aim of this paper is to investigate the cytotoxic and antibacterial activity of olive oil and lime cream individually or/and in combination in vitro conditions, by using disk-diffusion method and in cell culture. The main purpose in using this mixture is usually to clear burns without a trace. Agar overlay, MTT (Cytotoxicity assay) and antibacterial susceptibility tests were used to investigate the cytotoxic and antibacterial activity of olive oil and lime cream. We found that lime cream has an antibacterial activity but also cytotoxic on the fibroblasts. On the other hand olive oil has limited or no antibacterial effect and it has little or no cytotoxic on the fibroblasts. When we combined lime cream and olive oil, olive oil reduced its cytotoxic impact. These results suggest that mixture of olive oil and lime cream is not cytotoxic and has antimicrobial activity.

Modulation of Penile Erection in Rabbits by Mondia Whitei: Possible Mechanism of Action

April 2010

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638 Reads

Mondia whitei root was evaluated to validate its anecdotal use and determine its possible mode of action in the management of erectile dysfunction. Rabbits were administered with daily oral doses of 100-400 mg kg(-1) crude ethanolic extract of M. whitei and sildenafil (50 mg kg(-1)) as positive control for 6 weeks. Cavernosal tissue NOS activity and levels of NO and cGMP, and NOS and PDE protein expressions were investigated. The effect of the crude extract, chloroform and petroleum ether fractions in vitro on cavernosal tissue NOS activity and levels of NO and cGMP at 0.01 and 0.10 mg g(-1) tissue were also investigated. Results indicate that the crude extract increased NOS activity by 7% at 200 mg kg(-1) with corresponding increases in NO (88%) and cGMP (480%) levels. No significant changes in these measurements were observed with the 100 and 400 mg kg(-1) doses whilst sildenafil slightly reduced them (15.9-37.5%). NOS and PDE protein expressions in test animals were not different from controls. Pre-incubation of cavernosal tissue in vitro with the crude extract of M. whitei and its chloroform fraction markedly increased NOS activity (26-132%) and levels of NO (25%) and cGMP (50-400%) at 0.01 mg g(-1) tissue but these were reduced to near control levels when their concentrations were increased to 0.10 mg g(-1) tissue whilst the petroleum ether fraction had no effect. These findings suggest that M. whitei may influence erectile function through activation/stimulation of NOS with corresponding increases in tissue NO and cGMP levels and that certain chemical constituents present in the chloroform fraction may be responsible for biological activity.

Figure 1: Chemical structure of erinidine from Hunteria umbellata seed
Table 3 : Inhibitory effect of 0.125 and 0.250 mg/ml of erinidine on glycogen phosphorylase
Figure 5: Standard curve for the insulin secretion by the HIT-T15 cells 
Figure 6: Glucose uptake ratio of erinidine (test compound) relative to that of the control buffer solution showing no significant difference from each other. 
Figure 8: Acute time-course effect of 50 mg/kg HU, HU Af , HU n and erinidine pre-treatment on blood glucose levels in adrenaline-induced hyperglycemic rats a, b and c represent a significant rise at p<0.05, p<0.01 and p<0.001 when compared to the basal value at 0 min. I = 10 ml/kg 10%Tween 80-distilled water p.o. + 1 ml/kg of 10%Tween 80-distilled water i.p.; II = 10 ml/kg 10%Tween 80distilled water p.o. + 50 µg/kg adrenaline i.p.; III = 50 mg/kg HU in 10%Tween 80-distilled water p.o. + 50 µg/kg adrenaline i.p. IV = 50 mg/kg HU Af in 10%Tween 80-distilled water p.o. + 50 µg/kg adrenaline i.p.; V = 50 mg/kg HU n in 10%Tween 80distilled water p.o. + 50 µg/kg adrenaline i.p.; VI = 50 mg/kg erinidine in 10%Tween 80-distilled water p.o. + 50 µg/kg adrenaline i.p.
The Novel Antihyperglycaemic Action of Hunteria Umbellata Seed Fractions Mediated Via Intestinal Glucose Uptake Inhibition

January 2012

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671 Reads

The study investigated the effect of HIV/AIDS on productivity and welfare of women farmers in Abia State. Agriculture is the main source of livelihood in rural communities of Abia State and the state has recorded a tremendous increase in prevalence rate of HIV/AIDS epidemic in recent time, despite all the efforts of the State Government in the fight against the epidemic. A total of 150 respondents were randomly selected for the study. Data were collected through the use of structured questionnaire and then analyzed with the use of simple descriptive and inferential statistics. Major findings of the study revealed that majority of the respondents were married (92.7%); 38% of them were middle aged. Most of the respondents have various levels of educational attainment with 32% of them without formal education. The study further revealed the various ways the epidemic has affected the respondent; 19.8% of the respondents affected with HIV/AIDS complained about being isolated from people, 24% complained about reduction in cash flow while 22% complained about their inability to work. While those families not affected with HIV/AIDS complained about time loss (21%), 14% complained about restriction in land use and 20% of them indicated a reduction in household income. The T-test result also revealed a significant difference between the income of those affected with HIV/AIDS and those not affected at 1% level of significance. From these findings, HIV/AIDS has some effect on both families (those affected and those not affected). The study therefore, recommends that stakeholders need to progressively review agricultural situations through an HIV-lens in order to respond effectively.


Study On The Anti-Depressant Effect Of Chaihu Guizhi Decoction And Its Mechinisims Of Actions

July 2014

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13 Reads

Chaihu Guizhi has the effects of treating exogenous wind-cold; alternating episodes of chills and fever; noisy nose and retching; strong headache; chest and rib-side pain, and fullness, in clinical practice, it can also be used for the treatment of depression. The objective of this paper was to study the anti-depressant effect of Chaihu Guizhi decoction and its mechanism. The anti-depressant effect of Chaihu Guizhi decoction was investigated by forced swimming test, tail suspension test and antagonism of reserpine hypothermia test in mice. Chaihu Guizhi decoction could significantly shorten immobility time of mice in the forced swimming test, and dose-dependence significantly shorten immobility time of mice in the tail suspension test, after administration of 50, 100, and 200mg/kg, Chaihu Guizhi decoction, a significant dose-dependent antagonism of reserpine-induced hypothermia was observed in mice of each treatment group. Chaihu Guizhi decoction has an antidepressant effect.

Antinociceptive, Anti-Inflammatory and Antipyretic Activities of the Leaf Methanol Extract of Ruta Graveolens L. (Rutaceae) in Mice and Rats

July 2014

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55 Reads

Background: Ruta graveolens has been used to treat toothache, earache, rheumatism and fever with little scientific evidence corroborating these uses. Materials and methods: The leaf methanol extract of Ruta graveolens was evaluated for antinociceptive activity using the acetic acid writhing and hot-plate tests in mice, also anti-inflammatory and antipyretic activities using the carrageenan-induced oedema and E. coli-induced pyrexia tests in rats, respectively. Results: R. graveolens (100 mg/kg, i.p.), significantly reduced the number of acetic acid-induced writhes by 54 %. R. graveolens (400 mg/kg, i.p.), significantly delayed the reaction time in mice to thermal stimulation 15, 30, 45, and 60 min after treatment. Combined treatment of the lowest and sub-effective doses of the leaf methanol extract (25 mg/kg, i.p.), and indomethacin (10 mg/kg, i.p.) significantly reduced the number of acetic acid-induced writhes in mice. The leaf methanol extract of R. graveolens (50 - 400 mg/kg, i.p.), significantly reduced carrageenan-induced oedema over the 4 h period of testing. Combined treatment of the lowest doses of R. graveolens (25 mg/kg, i.p.) and indomethacin (2 mg/kg, i.p.) produced a significant reduction in carrageenan-induced oedema over the 4 h period of testing. R. graveolens (100 -400 mg/kg, i.p.) significantly reduced E. coli-induced pyrexia over the 5 h period of testing. Given together, the lowest dose of R. graveolens (25 mg/kg, i.p.) and pentoxifylline (10 mg/kg, i.p.) produced a significant reduction in pyrexia induced by E. coli (50 µg/kg, i.m.) over the 5 h period of measurement. The LD50 value obtained for R. graveolens was greater than 4000mg/kg (p.o), suggesting that the plant species may be safe in or nontoxic to mice. Conclusion: The data obtained indicate that R. graveolens has antinociceptive, anti-inflammatory and antipyretic activities, justifying the use of the plant species by traditional medicine practitioners in the management and treatment of pain, inflammation and fever.

Table 1 : Effects of methanolic plant extracts on carrageenan-induced paw oedema in rats 
Table 2 : Percentage oedema inhibition in rats treated with methanolic plant extracts 
Anti-Inflammatory And Antimicrobial Activities Of Hippocratea indica Root Bark And Poga oleosa Fruits

February 2007

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315 Reads

The methanolic extracts of Hippocratea indica root bark and Poga oleosa fruits were investigated for anti-inflammatory and antimicrobial activities. Both extracts inhibited carrageenan-induced paw oedema significantly in rats in a dose-dependent manner in 4 h. H. indica inhibited oedema significantly at the minimal dose (125 mg/ml, p< 0.05) from 2 h onward, and gave 100% inhibition in 4 h. at 250 mg/kg. It was shown to be a more potent anti-inflammatory agent than P. oleosa. Also, H. indica extract exhibited greater antimicrobial activity against tested bacteria, with Staphylococcus aureus being the most susceptible bacterium (MIC, 16 mg/ml). Both plants were inactive against Candida albicans. These results confirm the anti-inflammatory and antibacterial activities of the two plants.

Anti-Inflammatory and Antioxidant Activities of Methanol Extracts and Alkaloid Fractions of Four Mexican Medicinal Plants of Solanaceae

November 2014

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155 Reads

Background: Methanol extracts and alkaloid fractions of different parts of four plant species belonging to Solanaceae family and used in Mexican traditional medicine were investigated for their total phenolic contents, anti-inflammatory and antioxidant properties. Materials and methods: The total phenolic compounds of each extract was determined according to the Folin-Ciocalteu method, while the in vitro radical scavenging activities of the extracts were assessed using the DPPH and ABTS radicals. The in vivo anti-inflammatory activity was determined using the TPA-induced mouse ear edema model. Results: The methanol extracts contained the highest concentrations of phenolic compounds and also exhibited the best reducing power on the DPPH and ABTS radicals, in a concentration-dependent fashion. However, the anti-inflammatory activity did not follow the same trend, as some alkaloid fractions that showed low radical reducing power exhibited the strongest anti-inflammatory activity. Conclusion: The methanol extract obtained from the flowers of Nicotiana glauca presented the best overall performance with the largest amount of phenolic compounds (111 µg garlic acid equivalents/g of extract), the best antioxidant activity (94.80% inhibition of DPPH and 97.57% of ABTS) and the highest anti-inflammatory activity (81.93% inhibition of the inflammation).

Table 2 : Anti-trichomonal activities of subfractions D 1-9 . 
Table 4 : Anti-trichomonal activities of subfractions F 1-12 . 
Table 5 : Agglutination and haemagglutination values of the leaf extract and partition fractions. 
In-Vitro Evaluation of Anti-Trichomonal Activities of Eugenia Uniflora Leaf

January 2011

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169 Reads

Eugenia uniflora, used ethnomedically in some tropical countries as an anti-infective, has shown anti-malarial and anti-trypanocidal activities. Therefore using bioactivity guided fractionation, anti-trichomonal activity of E. uniflora leaf was investigated. Anti-trichomonal activities of leaf methanol extract and its fractions against Trichomonas gallinae as well as their cytotoxicities using an in vitro haemaglutination assay were determined. Anti-trichomonacidal activities of the extract improved on purification up to a stage. Subfractions E(2-5) had LC(50) and LC(90) values of 4.77 - 5.28, 18.49 - 25.00 and 4.53 - 5.18, 18.32 - 19.07 µg/ml at 24 and 48 hrs, respectively that were better than those of metronidazole. Further purification of E(2-5) led to loss of activity suggesting that the active components were probably working synergistically and additively. Demonstration of low haemaglutination titre values of 0.00 - 5.33 by methanolic extract and its partition fractions suggested their low toxicity profile. The established safety of the leaf indicated that its anti-trichomonal activity was not due to non-specific cytotoxicity, hence could be used in ethnomedicine as an anti-trichomonal agent.

Table 1 : Comparison of the signals of compound 1 and 2 with literature data 
Antioxidant And Antibacterial Activities of Flavonoid Glycosides from Ficus Exasperata Vahl-Holl (Moraceae) Leaves.

July 2014

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210 Reads

Background: Ficus exasperata Vahl-Holl (Moraceae) leaves are used for infectious and inflammatory conditions in many West African Countries. However, there is need for more phytochemical studies to justify the ethnomedicinal uses of the plant. Material and methods: The crude 50% aqueous ethanolic extract of the leaves was partitioned successively between water and; n-hexane, ethyl acetate and n-butanol. The fractions were subjected to antimicrobial activity using agar diffusion test. n-Butanol fraction, which showed both antimicrobial and radical scavenging activities was subjected to repeated chromatographic fractionation on both silica and Sephadex LH-20 columns. Each stage of the purification was monitored by thin layer chromatographic diphenylpicryl hydrazyl autographic assay. Three compounds were isolated. The structures of the compounds were elucidated using spectroscopic methods, shift reagent studies, acid hydrolysis, and by comparison with literature data. Results: The compounds were identified as apigenin C-8 glucoside (1), isoquercitrin-6-O-4-hydroxybenzoate (2) and quercetin-3-O-β-rhamnoside (3). The solvent fractions and isolated compounds were found to inhibit the growth of Gram +ve organisms only. Conclusion: These flavonoid glycosides are being reported in this plant species for the first time. Their weak in vitro antimicrobial activity suggest the flavonoids may be acting as pro-drug. The radical scavenging activity of the compounds may justify some of the ethnomedicinal uses of the plant as free radicals are implicated in the aetiology of many inflammatory diseases.

Antimicrobial and Free Radical Scavenging Activities of Five Palestinian Medicinal Plants

October 2013

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189 Reads

Extracts from five indigenous Palestinian medicinal plants including Rosmarinus officinalis, Pisidium guajava, Punica granatum peel, grape seeds and Teucrium polium were investigated for antimicrobial and free radical scavenging activities against eight microorganisms, using well diffusion method. The microorganisms included six bacterial isolates (i.e. Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginos, Klebsiella pneumonia, Bacillus subtilis and Micrococcus luteus) and two fungal isolates (i.e. Candida albicans and Aspergillus niger). A standard antioxidant assay was performed on the plant extracts to assess their capability in scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH). Of the five tested plant extract, only Rosmarinus offcinalis extract contained significant antimicrobial activity against all eight microbial isolates including Pseudomonas aeruginosa. Extracts from other four plants exhibited a variable antimicrobial activity against all microorganisms, except Pseudomonas aeruginosa. Significant antioxidant activity was detected in all plant extracts. However, extracts from Pisidium guajava leaves contained significantly higher antioxidant activity compared to the other extracts tested. The antimicrobial and scavenging activities detected in this in vitro study in extracts from the five Palestinian medicinal plants suggest that further study is needed to identify active compounds to target diseases caused by a wide-spectrum pathogens.

Anti-Inflammatory And Anti-Nociceptive Activities Of Methanolic Extract Of The Leaves Of Fraxinus floribunda Wallich

June 2007

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110 Reads

Fraxinus floribunda Wallich (Family-Oleaceae) is a wide green tree in the sub-alpine region of Sikkim, India. The methanolic extract of the leaves of Fraxinus floribunda (MEFF) at 100, 200 and 400mg/kg/p.o was screened in rats for anti-inflammatory activity by acute-carrageenan induced paw edema, sub-acute cotton pellet induced granuloma and chronic Freund\'s adjuvant induced arthritis models. In all the three models of antiinflammatory studies 200 and 400mg/kg/p.o doses of the extract showed significant effect (P<0.001). Antinociceptive evaluation was performed by writhing and tail-immersion tests in mice. Anti-nociceptive evaluation revealed that MEFF at the dose of 400mg/kg/p.o had significant activity against the control. The relieving effect was through the peripheral and central mechanism of action of the extract. This study rationalized the ethno medicinal use of the plant for relieving pain in inflammatory pathological conditions like fracture and dislocation.

Anti-Ulcer and Wound Healing Activities of Sida Corymbosa in Rats

March 2014

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379 Reads

There are strong beliefs in the efficacy of traditional medical systems worldwide. Many herbs have been acclaimed to possess antiulcer effects and could be unexplored sources of new lead compounds. Sida corymbosa R. E. Fries (Malvaceae) is used in Northern Nigeria to treat ulcers and wounds. This work aimed to investigate the usefulness of Sida corymbosa in treatments of stomach ulcers and wounds in traditional medicine. Effect of the aqueous extract was determined on gastric ulceration, rate of wound healing and inflammation using ethanol-induced and diclofenac-induced ulceration, wound excision model and albumin-induced inflammation respectively in rats. The study demonstrated the anti-ulcer activity of Sida corymbosa as the extract (250, 500 and 1000 mg/kg) showed a dose-dependent, significant (P<0.05) reduction of ulcer indices against gastric ulcers induced by both ethanol and diclofenac. Topical application of a formulation prepared with the extract of Sida corymbosa on surgically created incisions produced an increase in the rate of healing of the wounds. The extract of Sida corymbosa exhibited a significant (P < 0.05), dose-related decrease in inflammation induced by fresh egg albumin. This study showed that Sida corymbosa has constituents with the ability to reduce the severity of haemorrhagic gastric lesions, promote wound healing and reduce inflammation. These actions may be attributed to any one of the active constituents or as a result of synergistic effects of these phytoconstituents. This study validates the use of the plant in traditional medicine for the treatment of stomach ulcers and wounds.

Anti-Nociceptive And Anti-Inflammatory Activities Of Ethanol Extract Of Syzygium aromaticum Flower Bud In Wistar Rats And Mice

April 2008

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260 Reads

The ethanol extracts of Syzygium aromaticum flower bud were tested for anti-nociceptive and anti-inflammatory effects in mice and Wistar rats which were carried out using acetic acid-induced abdominal contractions in mice and formalin-induced hind paw edema in Wistar rats. Three doses of the ethanol extract (50, 100, and 200 mg/kg body weight i.p.) were used for both studies. The extract had an LD(50) of 565.7 mg/kg body weight intraperitoneally in mice. The extracts produced significant effect (P<0.05) at all the three doses. Similarly, the anti-nociceptive activity produced significant effects (P<0.05) at all the three doses of the extract. The result supports the local use of the plant in painful and inflammatory conditions.

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