Article

Review on Pharmacological profile of Salvia officinalis

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INTRODUCTION Traditional drugs are considered an important part of mankind's civilized system. The knowledge acquired via slow progressive expertise gained while handling plants by humans has lead to development of new science or in other words a new segment of therapy to deal with diseases and complications associated with anatomy and physiology. Traditional medicine though are used in different manners and is dependent from place to place, cultures followed and local beliefs, all over the world, but the significance of using medicinal plants into treating practices is a common inference. The main roadblocks for widespread popularity of traditional system have been mainly lack of proper governing body to regulate the practice in the deep areas of our society. [1] Recently a new light has come in form of agreement for having separate drug controller India for traditional medicine, leading to separate and focused decision making, in favor of building the standards for traditional medicines. [2] Many important texts emphasize use of medicinal plants in our traditional system of medicine like Charaka samhita, Sushruta Samhita, Ashtangahridaya (In Ayurveda). [3] SALVIA OFFICINALIS L. Salvia is one of the largest families of plants from mint family, Lamiaceae, having around 700 to 900 species of shrubs, herbaceous perennials, and annuals. Figure 1 Out of many species available for Salvia, few important have been in use and given special preferences in practices; following are the list of few species, x Salvia apiana x Salvia leucantha x Salvia divinorum x Salvia microphylla x Salvia elegans x Salvia miltiorrhiza x Salvia fructicosa x Slavia nemorosa

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... Aromatic medicinal herbs have been used since ancient times for both flavoring and healthcare purposes, since they are rich in active components, especially antioxidants (Devansh, 2012;Fellah et al., 2006;Roby et al., 2013). Of the numerous herbs, spices, and teas tested, Salvia officinalis, commonly called sage or garden sage (Parsai et al., 2015), was the one mainly found to have noticeable antioxidant capacity (AC) (Peter, 2001). ...
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Dementia pathologies such as Alzheimer's disease (AD) are reaching epidemic proportions, yet they are not successfully managed by effective symptomatic treatments. Only five drugs have been developed to alleviate cognitive symptoms, and more effective and safe treatments are needed for both the cognitive symptoms and behavioural and psychological symptoms of dementia (BPSD). As two of these licensed drugs (cholinesterase inhibitors [ChEIs]) are naturally derived (galantamine and rivastigmine), the potential for plants to yield new therapeutic agents has stimulated extensive research to discover new ChEIs together with plant extracts, phytochemicals and their derivatives with other mechanistic effects relevant to dementia treatment. This review presents the potential and actual therapeutic strategies for dementia in relation to the known mechanisms of dementia pathology. Phytochemicals that have shown mechanistic effects relevant to the pathological targets in dementia are discussed, with an emphasis on those showing positive clinical trial evidence. Those phytochemicals discussed include the alkaloid physostigmine, a ChEI from the calabar bean (Physostigma venenosum), which has been used as a template for the development of synthetic derivatives that inhibit acetylcholinesterase, including the drug rivastigmine. Also discussed are other ChEI alkaloids including huperzine A, from Huperzia serrata, and galantamine, originally from the snowdrop (Galanthus woronowii); both alkaloids improve cognitive functions in AD patients. Other phytochemicals discussed include cannabinoids (e.g. cannabidiol) from Cannabis sativa, which are emerging as potential therapeutic agents for BPSD, and resveratrol (occurs in various plants) and curcumin (from turmeric [Curcuma longa]), which have been investigated for their pharmacological activities relevant to dementia and their potential effects on delaying dementia progression. The review also discusses plant extracts, and their known constituents, that have shown relevant mechanistic effects for dementia and promising clinical data, but require more evidence for their clinical efficacy and safety. Such plants include Ginkgo biloba, which has been extensively studied in numerous clinical trials, with most outcomes showing positive effects on cognitive functions in dementia patients; however, more reliable and consistent clinical data are needed to confirm efficacy. Other plants and their extracts that have produced promising clinical data in dementia patients, with respect to cognition, include saffron (Crocus sativus), ginseng (Panax species), sage (Salvia species) and lemon balm (Melissa officinalis), although more extensive and reliable clinical data are required. Other plants that are used in traditional practices of medicine have been suggested to improve cognitive functions (e.g. Polygala tenuifolia) or have been associated with alleviation of BPSD (e.g. the traditional prescription yokukansan); such remedies are often prescribed as complex mixtures of different plants, which complicates interpretation of pharmacological and clinical data and introduces additional challenges for quality control. Evidence for the role of natural products in disease prevention, the primary but considerably challenging aim with respect to dementia, is limited, but the available epidemiological and clinical evidence is discussed, with most studies focused on ChEIs, nicotine (from Nicotiana species), curcumin, wine polyphenols such as resveratrol and G. biloba. Challenges for the development of phytochemicals as drugs and for quality control of standardized plant extracts are also considered.
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The sage components linalyl acetate (Ly) and alpha-terpineol (Te) exhibit synergistic anti-proliferative effects. We investigated the effects of Ly and Te on NF-kappaB signaling in HCT-116 colon cancer cells. Ly and Te combinations dose-dependently reduced HCT-116 viability at non-cytotoxic concentrations. Combination treatment induced 30%-60% increase in PreG1 through induction of apoptosis and necrosis. DNA binding assays revealed that combination treatment suppressed both basal and TNF-alpha-induced NF-kappaB activation. This suppression correlated with the inhibition of p65 nuclear translocation and IkappaB-alpha degradation. The lack of change in IKK expression levels or inhibition in IkappaB-alpha phosphorylation suggest the involvement of an IKK-independent mechanism. Ly and Te combination was found to downregulate the expression of NF-kappaB-regulated antiapoptotic and proliferative gene products. Separate treatments and drug combinations significantly decreased DNA binding activity of NF-kappaB which led to the potentiation of cell death induced by the colon cancer drugs oxaliplatin and 5-FU. These results indicate that Ly and Te anticancer activities are partly mediated through the suppression of NF-kappaB activation, suggesting their use in combination with chemotherapeutic agents to induce apoptosis.
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Salvia officinalis has been used as a traditional remedy against diabetes in many countries and its glucose-lowering effects have been demonstrated in animal studies. The active compounds and their possible mode of action are still unknown although it has been suggested that diterpenes may be responsible for the anti-diabetic effect of Salvia officinalis. To investigate whether the reported anti-diabetic effects of Salvia officinalis are related to activation of the nuclear receptor peroxisome proliferator-activated receptor (PPAR)γ and to identify the bioactive constituents. From a dichloromethane extract of Salvia officinalis able to activate PPARγ several major metabolites were isolated by chromatographic techniques. To assess bioactivity of the isolated metabolites a PPARγ transactivation assay was used. Eight diterpenes were isolated and identified including a new abietane diterpene being the epirosmanol ester of 12-O-methyl carnosic acid and 20-hydroxyferruginol, which was isolated from Salvia officinalis for the first time, as well as viridiflorol, oleanolic acid, and α-linolenic acid. 12-O-methyl carnosic acid and α-linolenic acid were able to significantly activate PPARγ whereas the remaining metabolites were either unable to activate PPARγ or yielded insignificant activation. Selected metabolites from Salvia officinalis were able to activate PPARγ and hence, the anti-diabetic activity of this plant could in part be mediated through this nuclear receptor.
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A double-blinded controlled clinical trial with parallel groups was designed to investigate the effectiveness of a herbal-based toothpaste in the control of plaque and gingivitis as compared with a conventional dentifrice. The efficacy of Colgate Herbal over Colgate tooth paste was assessed in this study. Thirty subjects with gingivitis participated in the study. All participants had at least 20 natural teeth with no probing depths greater than 3 mm and a plaque index score of 2 or more at baseline. At baseline, the clinical parameters like gingival index, plaque index and salivary pH were estimated. Paired t-test was used to compare the difference within the groups and unpaired t-test was used to compare the difference between the groups at baseline and on the 30th day. At the end of the study, there were statistically significant reductions in the gingival index and the plaque index scores within the test group. However, there were no statistically significant differences between the test and the control groups. The salivary pH changes were not statistically significant in the test group but were displaced more toward the acidic range in the control group. It was however concluded that the herbal-based toothpaste was as effective as the conventionally formulated dentifrice in the control of plaque and gingivitis.
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