Ali Aslan

Ataturk University · Ataturk University State Conservatory

Usnea longissima, a medically important lichen living in forests in Anatolia (Turkey). In this study, the gastroprotective effect of usnic acid (UA) was investigated using an indomethacin (IND)-induced gastric ulcer model in rats. While 25, 50, 100 and 200 mg/kg UA doses were dissolved in 2 ml of olive oil (OO) and administered to rats, only OO was...

This study investigated the antimicrobial and antioxidant properties of methanol extracts from five lichen species: Polycauliona candelaria (Syn. Xanthoria candelaria), Nephromopsis chlorophylla (Syn. Cetraria chlorophylla), Circinaria calcarea (Syn. Aspicilia calcarea), Bryoria capillaris (Syn. Alectoria cana), and Peltigera canina (Syn. Dermatode...

Some trace elements in various lichens as biomonitors of pollution were investigated. Also, the pollution status was assessed by enrichment factor, contamination factor, and pollution loud index. Investigated elements were Ta, Bi, Hf, Nb, Ga, Sc, Li, Y, Ce, and Sr. The lichen species were Rhizoplaca chrysoleuca, Umbilicaria vellea, Aspicilia calcar...

Investigation of various species of lichen as biomonitors of air pollutants deposition and evaluation of element pollution were aimed. Maximum accumulation was 43.9±2.1 mg/kg in X. somloensis. Strontium in lichen species was quite high. Percentages of strontium for L.pulmonaria, C.furcata, U.longissima, X.somloensis, and F.caperata were between 58%...

Background Nerium oleander L. is ethnopharmacologically used for diabetes. Our aim was to investigate the ameliorative effects of ethanolic Nerium flower extract (NFE) in STZ-induced diabetic rats. Methods Seven random groups including control group, NFE group (50 mg/kg), diabetic group, glibenclamide group and NFE treated groups (25 mg/kg, 75 mg/...

Our field research in Van province during 2008–2009 resulted in collection of 3766 lichen samples from 55 sites, and identification of 229 lichen taxa, including two subspecies and three varieties, in 108 genera of Ascomycota. We found 182 new records for Van province. These include four new records for Turkey, namely Bibbya ruginosa, Buellia subal...

All organisms in nature interact and compete with each other. Various groups of organisms such as algae, lichens, crops and weeds have been found as allelopathic interaction and it is known that lichens have many potent secondary metabolites. The aim of this study was to determine the allelopathic effects of lyophilized ethanolic extract of Xanthop...

This study presents the biopharmaceutical potential and bioactive composition of Xanthoria lichens (X. candelaria, X. elegans, X. parietina) that wildly grown and traditionally utilized as medicine in North Eastern Anatolia, Turkey, which has specific microclimatic and ecological zones. Chromatographic findings revealed significant levels of pariet...

The novel semi-natural Schiff bases were synthesized with the reaction of the natural compounds usnic acid and naringenin extracted and purified in natural sources and chemically modified silica gel. Cu(II), Ni(II), Co(II) and Mn(II) complexes of the ligands were synthesized and the silica-supported ligands and their metal complexes were characteri...

The use of medicinal plants and secondary metabolites increases in treating numerous diseases such as hepatocellular carcinoma (HCC), one of the leading causes of cancer-related death worldwide. Oxidative stress contributes to the development of liver cancer, and promoting antioxidant systems might provide better insights for the treatment. In the...

Background Liver has an important role in the initiation and progression of multiple organ failure that occurs in sepsis. Many natural active substances can be used to reduce the liver injury caused by sepsis. For this aim, the effects of myricetin and apigenin on mice model of acute liver injury was evaluated in this study. Methods and results Th...

Objective: Although connexins are thought to provide normally functioning gap junctions via a tumor suppressor gene, new studies point to an abnormal increase of connexins in various carcinomas and sarcomas. Therefore it was aimed to investigate the expression of connexin 43 (Cx43) and connexin 32 (Cx32) in adenomatous and hyperplastic polyps. Mate...

In this study was aimed to determine the genotoxic effect of Ramalina farinacea lichen species against stress sources at the molecular level. After applying three different heavy metals (Pb2+, Cd2+, and Cr6+) to the R. farinacea, the extent to which the lichen sample absorbed these metals was determined by Flame Atomic Absorption Spectroscopy. RAPD...

The potential human health risks of some toxic/harmful elements related to the consumption of Pseudevernia furfuracea (L.) Zopf. were investigated. The toxic/harmful elements (cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni), and zinc (Zn)) were determined in P. furfuracea. According to the analysis result, the maxim...

Natural mushrooms are one of the important elements of the ecosystem. It has been preferred by people from past to present because of its nutritional and medicinal potentials. In this study, antioxidant, oxidant and antimicrobial potential of Trametes hir-suta (Wulfen) Lloyd has been determined. In addition , phenolic compounds in its fruiting body...

Many lichen secondary metabolites contributed to the field of pharmacology as an active ingredient of different drugs for years. In the present study, we aimed to test the anticancer activity of olivetoric acid (OA), which we isolated from Pseudev-ernia furfuracea (L.) Zopf in human hepatocellular carcinoma cells (HepG2). In addition, we used non-t...

The aim of this study is to investigate the effect of concept cartoons and biology teaching based on a constructivist learning approach on student achievement and permanence of knowledge. The study group consists of 49 students studying in two of the 10th digital classes of Kazım Karabekir Technical and Industrial Vocational High School in the Yunu...

In this study, acetone and water extracts obtained from edible mushrooms, Rhizopogon luteolus Fr. and Rh. roseolus (Corda) Th. Fr., containing important bioactive components were used. Total antioxidant capacity (TAC) and total oxidative stress (TOS) levels were examined on human peripheral lymphocyte culture treated with the respective extracts. L...

Abstract In the present study, cytotoxic (apoptotic and necrotic), antioxidant, prooxidant, genotoxic, and apoptosis-related genes expression modulatory effects of physodic acid (PA) isolated from Pseudevernia furfuracea on cancerous (HepG2) and healthy (THLE2) human liver cells were evaluated. Cytotoxic effects PA obtained from P. furfuracea on He...

A contribution to the lichen flora of Turkey is presented. A total of 282 lichen taxa and 20 lichenicolous fungi, of which 4 are varieties, are determined from 87 different localities in Muş province (Turkey). Lichenostigmagracile, a lichenicolous fungus, is new to Turkey, and 274 lichen species and 20 lichenicolous fungi are new for Muş.

Amaç: Bu çalışmanın amacı; vücudun bazı bölgelerinde görülen yassı epitel hücreli karsinom vakalarında Ekadherin ve β-katenin düzeylerinin; hastaların yaşı, cinsiyeti, karsinomların yerleşim yeri ve tümör tipine göre değişip değişmediğini ortaya koymaktır. Materyal ve Metot: Retrospektif olarak yapılan bu çalışmanın örneklemini Ordu Üniversitesi Eğ...

As a result of lichenological exploration in Bitlis province (Turkey), a total of 325 lichens and 21 lichenicolous fungi, which are belonging 113 genera in Ascomycota were determined from 92 different localities. Buellia vouauxii, a lichenicolous fungus, and is new to Turkey and also new for Asia. Aspicilia glomerulans, Llimoniella muralicola, Myri...

In this study, immunotoxic and neurotoxic effects of leaf infusion of Platanus orientalis L. (PO) were investigated in rats ethanol-induced toxicity. Neurotoxic effects of ethanol were evaluated by measuring acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) in rat brain tissue. Immunotoxic effects were evaluated by adenosine deaminase (A...

This work aims to determine the response of Hypogymnia physodes (L.) Nyl.(hooded tube lichen) collected in an unpolluted site (Yenice Forest in Karabük, Turkey) to stress conditions. In the present study, the effect of exposure to different heavy metals (Cd+ 2, Pb+ 2, and Cr+ 6) for different durations and UV radiations dosages on lichen was examin...

Thirteen new species are formally described: Cortinarius brunneocarpus from Pakistan, C. lilacinoarmillatus from India, Curvularia khuzestanica on Atriplex lentiformis from Iran, Gloeocantharellus neoechinosporus from China, Laboulbenia bernaliana on species of Apenes, Apristus, and Philophuga (Coleoptera, Carabidae) from Nicaragua and Panama, L. o...

Background There is no study in the literature investigating the expression levels of WT1, p53, and IGF-1 in colon polyp subtypes. In this study, we aimed to investigate the expression levels of IGF-1, p53, and WT1 in colon polyp subtypes and to determine whether expression levels are correlated with each other. Material/Methods Tissue specimens w...

Three lichenicolous fungi occcuring on Tephromela atra and Lecidea fuscoatra– Rhymbocarpus fuscoatrae, Sclerococcum tephromelarum and Skyttea tephromelarum, collected from the Tunceli and Bingöl provinces of Turkey – are reported as new to Turkey and Asia, following a recent lichenological survey in those provinces. Short descriptions are provided,...

Three lichenicolous fungi, Abrothallus peyritschii, Lichenochora verrucicola and Sclerococcum montagnei, collected from Burdur and Bitlis provinces, are reported as new to Turkey, the latter species is also new to Asia. Short descriptions, including geographical distributions, hosts and comparisons with similar taxa are provided.

Likenler yapısında farklı metabolitleri bulunduran ve bu bileşenleri sayesinde antik çağlardan beri birçok hastalığın tedavisinde yararlanılan organizma olarak dikkat çekmektedir. Bu yüzden, mevcut çalışma önemli liken türlerinden biri olan Platismatia glauca (L.) W.L.Culb. & C.F.Culb.'nın insan lenfositleri üzerindeki etkilerini incelemeyi amaçlam...

Aims: Glioblastoma multiforme (GBM) shows the most aggressive invasion among primary brain tumors. In spite of the standard therapy methods such as surgery, radiotherapy, and chemotherapy, the mortalities are high in GBM patients owing to side effects. Some lichen secondary metabolites that have many bioactive functions exhibited anti-cancer effica...

Purpose: Today, the long-term effects of partial exposure of cholinesterase on the kidney continue to be a research topic. In this study, we aimed to histopathologically investigate the possible effect of acute toxicity due to fenthion, an organophosphate (OP) compound, on the kidneys. Methods: In all, 21 rats were randomly divided into three group...

The present study aims at assessing the efficacies of olivetoric acid (OA) and physodic acid (PA) isolated from Pseudevernia furfuracea (L.) Zopf (Parmeliaceae) in human lymphocytes (HLs) in vitro. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and lactate dehydrogenase assays were performed to establish cytotoxicity in HLs. Besides,...

Amaç: WT1, ilk olarak Wilms tümörü gelişimini etkileyen tümör baskılayıcı bir gen olarak tespit edilmiş olsa da, kolon kanseri gibi bazı malignitelerde ekspresyonunun arttığı, dolayısıyla onkojenik özelliklerinin olduğu da bildirilmektedir. Bu çalışmanın amacı WT1 ekspresyonunun hastanın yaşına, cinsiyetine, örneğin alındığı bölgeye ve patolojik ta...

Agriculture has become one of the greatest sources of employment for mankind from the past to the present. The products obtained in this area provide a significant contribution to the national economies. However, the number of organisms causing the decline in crop yield is quite high. The preferred applications for combating harmful organisms are t...

Mevcut çalışmada, Cladonia furcata (Huds.) Schrad. likeninden elde edilen metanol ve su ekstraktlarının (sırasıyla CME ve CSE) insan lenfositleri üzerindeki aktivitelerinin değerlendirilmesi amaçlanmıştır. Lenfositlerdeki sitotoksik etkiyi test etmek için 3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolyum bromür ve laktat dehidrogenaz testleri kulla...

In this study, the mutagenic and anti-mutagenic effects of methanol extract of three lichen species (Cetraria aculeata, Cladonia chlorophaea and Cetrelia olivetorum) were investigated by using E. coli-WP2, Ames-Salmonella (TA1535 and TA1537) and sister chromatid exchange (SCE) test systems. The results obtained from bacterial test systems demonstra...

The present study introduces seven new species, one new combination, one new variety and several interesting taxonomical notes and/or geographical records. Most of the new taxa are Ascomycetes, but the study also includes a new variety of a Basidiomycete. Novel species include Gyromitra khanspurensis (Discinaceae, Pezizales, Pezizomycetes) from Pak...

The pathological effects of exposure to an electromagnetic field (EMF) during childhood and adolescence may be greater than those from exposure during adulthood. We investigated possible pathological changes in the cerebellum of adolescent rats exposed to 900 MHz EMF daily for 25 days. We used three groups of six 21-day-old male rats as follows: un...

It is known that lichens are utilized for the treatment of many diseases including ulcer, diabetes, and cancer for many years. Secondary metabolites in the structure of the lichens provide various activity properties for them. In the present study, cytotoxic and oxidative effects of main constituents of Pseudevernia furfuracea (L.) Zopf (Parmeliace...

In this study, we determine the self attenuation correction factor for lichen samples collected from Erzurum, a city located in the eastern region of Turkey by using gamma-ray spectrometry. The self attenuation correction factor is calculated for 17 lichen samples with densities ranging from 0.683 g/cm³ to 0.886 g/cm³. The transmission method has b...

Context Since methods utilised in the treatment of glioblastoma multiforme (GBM) are inadequate and have too many side effects, usage of herbal products in the treatment process comes into prominence. Lichens are symbiotic organisms used for medicinal purposes for many years. There are various anticancer treatments about components of two lichen sp...

Cell phones, an indispensable element of daily life, are today used at almost addictive levels by adolescents. Adolescents are therefore becoming increasingly exposed to the effect of the electromagnetic field (EMF) emitted by cell phones. The purpose of this study was to investigate the effect of exposure to a 900-MHz EMF throughout adolescence on...

Three lichen species collected from the Muş and Burdur regions (Merismatium deminutum, Porpidia zeoroides, Protoparmelia atriseda) have been determined as new to Turkey and Asia. Descriptions are accompanied by notes on geographic distribution and chemistry and comparisons with morphologically similar taxa.

Three lichen species, Aspicilia glomerulans , Lobothallia chadefaudiana, and Rhizocarpon furfurosum, were identified as new to Turkey and Asia during a lichenological survey in the Burdur and Muş sedilla regions (Turkey). Descriptions accompany notes on known distribution, substrates, and chemistry and comparisons with morphologically similar taxa.

The protective role of lichens are getting more important. In this study, the antigenotoxic and antimutagenic activity of the methanol extracts of four lichen species (Anaptychia ciliaris, Bryoria fuscescens, Parmotrema chinensa and Xanthoria candelaria) were investigated. Sister Chromatid Exchange (SCE) test were used for determining the genotoxic...

Objective: The aim of the study is to determine the genotoxic effects of various environmental pollutants around cement factory in Askale-Erzurum. It was studied four lichen species which include Pseudevernia furfuracea, Lobaria pulmonaria, Cetralia islandica and Usnea longissima. Methods: The main observation or changes in the protein assay and RA...

In this study, the biosorption of zinc(II) ions from the aqueous solutions by the lichen biomass of Xanthoria parietina (L.) Th. Fr. was studied as a function of contact time, initial pH of metal solution, biosorbent concentration, initial metal ion concentration and stirring speed in a batch system. The optimum pH value for maximum zinc biosorptio...

Two lichen metabolites, rhizonaldehyde (1) and rhizonyl alcohol (2), were isolated from the acetone extract of Lobaria pulmonaria by chromatographic methods, and their chemical structures were determined by UV/VIS, IR, and 1D- and 2D-NMR spectroscopic methods. The gastroprotective and in vivo antioxidant activities of extracts of L. pulmonaria and...

Children are at potential risk due to their intense use of mobile phones. We examined 8-week-old rats because that age is comparable with the preadolescent period in humans. The numbers of pyramidal neurons in the cornu ammonis of the Sprague Dawley male rat (8-weeks old, weighing 180-250g) hippocampus following exposure to a 900MHz (MHz) electroma...

This study was designed to investigate the hepatoprotective effect of diffractaic acid isolated from a lichen species, Usnea longissima, at 3 doses, 50, 100 and 200 mg/kg, against carbon tetrachloride (CCl4)-induced hepatic damage. For this purpose, 40 Wistar albino rats were divided in 5 groups, including 3 experimental and 2 control ones, and 0.2...

This study was designed to investigate the hepatoprotective effect of diffractaic acid isolated from a lichen species, Usnea longissima, at 3 doses, 50, 100 and 200 mg/kg, against carbon tetrachloride (CCl 4)-induced hepatic damage. For this purpose, 40 Wistar albino rats were divided in 5 groups, including 3 experimental and 2 control ones, and 0....

Insecticidal activities of extracts of three lichen species on Sitophilus granarius (L.) (Coleoptera: Curculionidae). Plant Protect. Sci., 51: 155–161. Four different concentrations of extracts obtained from three lichen species (Lecanora muralis (Schreb.) Rabenh., Letharia vulpina (L.) Hue, and Peltigera rufescens (Weiss) Humb) were tested against...

Pseudevernia furfuracea L. (Zopf), Peltigera praetextata (Flörke ex Sommerf.) Zopf, Lobaria pulmonaria (L.) Hoffm., and Usnea longissima Ach. lichen species were used as bioindicators to assess the genotoxicity of air pollutants. In the present study, we examined significant environmetal pollutants and investigate how changes may lead to damage in...

Diffractaic acid (DA) is a naturally occurring depside derivative found in several lichen species. It has a wide range of important biological effects such as analgesic and antiviral properties, although its cytotoxic, cytogenetic and oxidative effects have not been investigated in human blood tissue yet. Therefore, increasing concentrations (1, 5,...

In this study, the geno-toxic and antigeno-toxic properties of the total extracts of four lichen species were investigated by using human lymphocytes. We obtained total extracts from R. farinacea, X parietina, U articulata and U. filipendula lichen species. The results of our studies showed that 5 mu M concentrations of AFB(1) changed the frequenci...

The aqueous and ethanol extracts prepared from some lichens species were evaluated for antibacterial activity against six standard strains (Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Klebsiella pneumoniae, Staphylococcus aureus and Staphylococcus epidermidis) and two environmental strains (Aeromonas) that were isolated from differ...

In the present study, we firstly assessed Cetraria islandica and Pseudevernia furfuracae to avoid detrimental effects on multiple tissues of rats. Diabetes mellitus (DM) with the subsequent generation of oxidative stress represents a major risk factor for organs. The second aim of this study is to investigate whether administration of both lichens...

Lichens synthesize very special metabolites as differ from other plant species. Usnea longissima,which is usually spread in moist and shady areas, is a lichen species. Usnea longissima has many biological activities. Diffractaic acid is one of the major metabolites of Usnea species. The present study aimed to investigate the anticancer efficacy of...

Novel multifunctional hydroxyphenylimino ligands (L1, L2 and L3) were synthesized by the condensation of 2-aminophenol, 3-aminophenol and 4-aminophenol with usnic acid, a lichen metabolite. The synthesized ligands and their Cu(ii), Co(ii), Ni(ii) and Mn(ii) complexes were characterized using FT-IR, UV-Vis, (1)H-NMR, (13)C-NMR, 1D- and 2D NMR (DEPT,...

Extracts of Letharia vulpina (L.) Hue and Peltigera rufescens (Weiss) Humb. lichen species and two major lichen compounds (diffractaic and usnic acids), isolated from Usnea longissima Ach., were tested against adults of the maize weevil, Sitophilus zeamais Motschulsky under laboratory conditions at various concentrations (2.5, 5, 10, 20 mg.ml -1 fo...

Extracts of the three lichen species; Lecanora muralis (Schreb.) Rabenh., Letharia vulpina (L.) Hue and Peltigera rufescens (Weiss) Humb. were tested against the 4 th larval instar and adults of the Colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae). Results showed that the three extracts had insecticidal effects on l...

Extracts of the three lichen species; Lecanora muralis (Schreb.) Rabenh., Letharia vulpina (L.) Hue and Peltigera rufescens (Weiss) Humb. were tested against the 4 th larval instar and adults of the Colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae). Results showed that the three extracts had insecticidal effects on l...

Three lichen species, namely Cladonia grayi G. Merr. ex Sandst., Pertusaria subventosa Malme var. subventosa, and Parmelia squarrosa Hale are reported as new to Turkey as a result of a lichenological survey in the Burdur region of the country. Descriptions are presented, including geographic distribution, substrate, chemistry, and comparisons with...

This study investigated the effect of a 900 megahertz (MHz) electromagnetic field (EMF) applied in the prenatal period on the spinal cord and motor behavior of female rat pups. Beginning of the study, female Sprague Dawley rats (180-250 g) were left to mate with male rats. Rats identified as pregnant were then divided into control (n=3) and EMF gro...

The purpose of this study was to examine the effect on hippocampus morphology and learning behavior in rat pups following prenatal exposure to a 900 megahertz (MHz) electromagnetic field (EMF). Female Sprague Dawley rats weighing 180-250 g were left to mate with males. The following day, pregnant rats identified as such by the vaginal smear test we...

The number of studies reporting that the electromagnetic field (EMF) emitted by mobile phones affects human health is increasing by the day. In previous studies we reported that a 900 megahertz (MHz) EMF applied throughout the prenatal period reduced the number of pyramidal cells in the cornu ammonis of rat pups in the postnatal period. In this stu...

Oxidative stress plays an important role in causing diabetes; however, no studies have thoroughly reported on the toxic and beneficial effects of lichen extracts in patients with diabetes mellitus (DM). This study covers a previously unrecognized effect of two well-known lichen species Cetraria islandica and Pseudevernia furfuracae in streptozotoci...

Lichens are symbiotic organisms composed of fungi and algae and are very common in Turkey. Lichen secondary metabolites are mainly phenolic compounds produced by fungal partner of lichen symbiosis. Usnic acid (UA) is one of the most common lichen metabolites, and it was reported that to be effective for a wide range of pharmacological purposes incl...

In this article, the genotoxic and antigenotoxic effects of methanol extract of of Cladonia foliacea (Huds.) Willd. (CME) were studied using WP2, Ames (TA1535 and TA1537), and sister chromatid exchange (SCE) test systems. The results of our studies showed that 5 µM concentration of aflatoxin B1(AFB1) changed the frequencies of SCE and malondialdehy...

Context: The aqueous extracts of Cetraria islandica (L.) Ach. (Parmeliaceae) is traditionally used in many countries against a number of conditions, including inflammatory conditions. Objective: The present study aimed to assess, for the first time, the effectiveness of C. islandica in cultured primary blood cells of Type 1 diabetes subjects. M...

Five species of lichenized fungi – (Lecanora invadens, Lecidea promiscua, Melaspilea interjecta, Placynthium garovaglioi, and Verrucaria bryoctona) – are reported as new to Turkey. Three of them, M. interjecta, P. garovaglioi, and V. bryoctona, are also new to Asia. Descriptions are presented, including geographic distribution, substrate, chemistry...

Lichens are symbiotic organisms composed of a fungus joined to a photosynthesizing partner that can be either an alga or a cyanobacterium. They can be used as a novel bioresource for natural antioxidants. However, there is also a need for further studies to validate the lichens used in medicinal remedies. This study covers the previously unrecogniz...

Muslims living in western Europe have to manage their religious identity in societies that tend to define Islam as a religion of violence and terrorism. The current study examines the ways in which two major Turkish Muslim organizations (Milli Görüş and Fethullah Gülen) in the Netherlands and Germany publicly define a morally acceptable identity by...

For ages, lichens have long been investigated popularly for biological roles, mainly antitumor, antimicrobial and antioxidant activities. Many positive results were obtained in these previous research. Thus, in this study, we aimed to determine whether extracts of Usnea articulata (UAE) and Usnea filipendula (UFE) possessing a protection against af...

Now-a-days, there is a big need to reduce genotoxic effects of mutagenic and carcinogenic agents in environment, which are increased by the technological development. Lichens produce a wide variety of unique metabolites due to being in various extreme areas and being symbiotic organisms of fungi and algae. Therefore, this study was planned to searc...

In this article, the genotoxic and antigenotoxic effects of methanol extract of Evernia prunastri (Huds.) Willd. (MEP) were studied using WP2, Ames (TA1535 and TA1537) and sister chromatid exchange (SCE) test systems. The results obtained from bacterial test systems demonstrated that MEP has strong antimutagenic potencies on TA1537 and WP2 strains....

Extracts of the three lichen species; Lecanora muralis (Schreb.) Rabenh., Letharia vulpina (L.) Hue and Peltigera rufescens (Weiss) Humb. were tested against the 4 th larval instar and adults of the Colorado potato beetle, Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae). Results showed that the three extracts had insecticidal effects on l...

Aflatoxin B1 (AFB1), is a common human carcinogen causing genotoxicity and oxidative stress in many model systems. In this study, we aimed to investigate the possible protective effects of methanol extract of Cladonia rangiformis (CME) against the oxidative stress and the mutagenicity of AFB1 in vitro. Anti-genotoxic activity was evaluated by siste...

The prevalence of diabetes mellitus in the world is steadily increasing. Oxidative stress contributes to the development of diabetic complications, including diabetic haematological changes. Lichens are used as food supplements and are also used as possible natural antioxidant, antimicrobial and anticancer agents. We hypothesized that antioxidant a...

Cadmium (Cd) is one of the most harmful heavy metals and influences important metabolic processes causing serious damages in many organs. It is well known that Cd could provoke generation of reactive oxygen species (ROS) and DNA damage. Some antioxidants (such as vitamin C, vitamin E and N-acetyl-L-cysteine) have been used as protectors against cad...

The objectives of this study have been to determine the impact of the distance from a combustor of a cement plant (downwind direction) and duration of exposure to pollution on the bioaccumulation of metals by four lichen species. Nickel, cadmium, chromium, copper and lead accumulated in lichen thalli, with the highest accumulation occurring at 50 m...

Four different concentrations of extracts, obtained from the two lichen species (Cladonia foliacea (Huds.) Willd. and Flavoparmelia caperata (L.) Hale), were tested against the grain weevil, Sitophilus granaries (L.) under laboratory conditions. Mortality rate of adults was determined at 24, 48, and 96 h Obtained results showed that the extracts of...

Imazalil (IMA), a commonly used fungicide in both agricultural and clinical domains, is suspected to produce serious toxic effects in vertebrates. In recent years, a number of studies have suggested that lichens might be easily accessible sources of natural drugs that could be used as a possible food supplement. Extensive research is being performe...