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Showing papers on "Withania somnifera published in 2017"


Journal ArticleDOI
TL;DR: In this paper, the authors compared ultrasound and microwave assisted solvent extraction with the conventional extraction method, and determined the antioxidant activity of the extracts using DPPH and ABTS methods of antioxidant assay.

352 citations


Journal ArticleDOI
TL;DR: Ashwagandha may be effective in enhancing both immediate and general memory in people with MCI as well as improving executive function, attention, and information processing speed.
Abstract: Objectives: Cognitive decline is often associated with the aging process. Ashwagandha (Withania somnifera (L.) Dunal) has long been used in the traditional Ayurvedic system of medicine to enhance memory and improve cognition. Aim: This pilot study was designed to evaluate the efficacy and safety of ashwagandha (Withania somnifera (L.) Dunal) in improving memory and cognitive functioning in adults with mild cognitive impairment (MCI). Methods: A prospective, randomized, double-blind, placebo-controlled study was conducted in 50 adults. Subjects were treated with either ashwagandha-root extract (300 mg twice daily) or placebo for eight weeks. Results: After eight weeks of study, the ashwagandha treatment group demonstrated significant improvements compared with the placebo group in both immediate and general memory, as evidenced by Wechsler Memory Scale III subtest scores for logical memory I (p = 0.007), verbal paired associates I (p = 0.042), faces I (p = 0.020), family pictures I (p = 0.006), log...

109 citations


Journal ArticleDOI
TL;DR: While WsWRKY1 silencing in W. somnifera compromised the tolerance to bacterial growth, fungal infection, and insect feeding, its overexpression in tobacco led to improved biotic stress tolerance, demonstrating its importance as a metabolic engineering tool for simultaneous improvement of triterpenoid biosynthesis and plant defense.
Abstract: Summary Withania somnifera produces pharmacologically important triterpenoid withanolides that are derived via phytosterol pathway; however, their biosynthesis and regulation remain to be elucidated. A jasmonate- and salicin-inducible WRKY transcription factor from W. somnifera (WsWRKY1) exhibiting correlation with withaferin A accumulation was functionally characterized employing virus-induced gene silencing and overexpression studies combined with transcript and metabolite analyses, and chromatin immunoprecipitation assay. WsWRKY1 silencing resulted in stunted plant growth, reduced transcripts of phytosterol pathway genes with corresponding reduction in phytosterols and withanolides in W. somnifera. Its overexpression elevated the biosynthesis of triterpenoids in W. somnifera (phytosterols and withanolides), as well as tobacco and tomato (phytosterols). Moreover, WsWRKY1 binds to W-box sequences in promoters of W. somnifera genes encoding squalene synthase and squalene epoxidase, indicating its direct regulation of triterpenoid pathway. Furthermore, while WsWRKY1 silencing in W. somnifera compromised the tolerance to bacterial growth, fungal infection, and insect feeding, its overexpression in tobacco led to improved biotic stress tolerance. Together these findings demonstrate that WsWRKY1 has a positive regulatory role on phytosterol and withanolides biosynthesis, and defense against biotic stress, highlighting its importance as a metabolic engineering tool for simultaneous improvement of triterpenoid biosynthesis and plant defense.

89 citations


Journal ArticleDOI
08 May 2017
TL;DR: Energy of Consciousness Healing Treatment could be advantageous for altering the concentration of the phytoconstituents in the ashwagandha root extract by modifying their intrinsic physicochemical properties, which might be helpful to improve the bioavailability of active constituents of ashwAGandha extract that might provide better therapeutic response against inflammatory diseases, immunological disorders, arthritis, stress, cancer, diabetes, sexual disorders, aging, and other chronic infections.
Abstract: Withania somnifera (ashwagandha) root extract is a popular health supplement, with purported health benefits including prevention and treatment of various diseases, i.e. anxiety, stress, etc. The objective of this experiment was to evaluate the impact of Energy of Consciousness Healing Treatment (The Trivedi Effect®) on the characteristic properties of the phytoconstituents present in the ashwagandha root extract using LC-MS, GC-MS, and NMR spectroscopy. Ashwagandha root extract was divided into two parts – one part was control (without treatment), while another part was treated with the Consciousness Energy Healing Treatment remotely by twenty renowned Biofield Energy Healers and defined as the Biofield Energy Treated sample. The liquid chromatographic data of the control and Biofield Energy Treated samples revealed that the retention time of the 25 chromatographic peaks remained same, whereas the peak area% i.e. the relative amount of the phytoconstituents was altered significantly. The peak area% of the treated ashwagandha root extract representing the phytoconstituents was significantly decreased in the range of 6.02% to 39.74% at Rt of 5.2, 5.3, 5.4, 5.6, 5.7, 6.9, 7.1, 7.3, 7.8, 7.9, 8.0, and 8.5 minutes compared to the control sample. On the contrary, the peak area% of the other phytoconstituents present in the treated sample was significantly increased in the range of 4.12% to 82.32% at Rt of 5.1, 6.4, 6.6, 6.8, 8.1, 8.2, 8.4, 8.6, 8.8, 8.9, 9.0, 9.1, and 9.2 minutes, respectively compared to the control sample. A total of 16 withanolides such as sitoindoside IX, viscosa lactone B, dihydrowithanolide D, withanolide A, withaferin A, ixocarpalactone A, withanolide sulfoxide, etc. were proposed from the molecular mass at m/z 605, 489, 473, 471, 505, and 992 at the retention times of 6.9, 7.1, 7.8, 8.2, 8.5, and 9.2 minutes with the help of LC-MS, GC-MS and NMR data of both the samples. Subsequently, the mass peak intensities of the treated sample were significantly changed in the range of -61.24% to 106.61% compared with the control sample at the same retention time. These findings suggest that Energy of Consciousness Healing Treatment could be advantageous for altering the concentration of the phytoconstituents in the ashwagandha root extract by modifying their intrinsic physicochemical properties, which might be helpful to improve the bioavailability of active constituents of ashwagandha extract that might provide better therapeutic response against inflammatory diseases, immunological disorders, arthritis, stress, cancer, diabetes, sexual disorders, aging, and other chronic infections.

76 citations


Journal ArticleDOI
TL;DR: The role of herbal medicines in male infertility is discussed, a proposed direct oxidative mechanism involving mitigation of oxidative stress as well as an indirect mechanism consisting of a gamma-aminobutyric acid-like-mimetic pathway ameliorating hormonal balance through crosstalk among different endocrine glands to improve male fertility are described.
Abstract: To manage male infertility caused by hormonal imbalance, infections and other predicaments, multifarious treatment strategies are emerging worldwide. Contemporary treatments, such as assisted reproductive techniques, are costly with low success rates of only 10-30%; however, herbal remedies are gaining more attention as an alternative or supplementary therapeutic modality for male infertility. The beneficial effects induced by oral intake of the roots of a small evergreen shrub, Withania sominifera (Ashwagandha) on semen quality of infertile men have previously been studied. Oral intake of Ashwagandha roots has been found to inhibit lipid peroxidation, improve sperm count and motility, and regulate reproductive hormone levels. The molecular mechanisms of these effects, however, are yet to be unveiled. In this review, we will discuss the role of herbal medicines in male infertility; provide a detailed analysis of various human and animal studies involving Withania somnifera; describe a proposed direct oxidative mechanism involving mitigation of oxidative stress as well as an indirect mechanism consisting of a gamma-aminobutyric acid-like-mimetic pathway ameliorating hormonal balance through crosstalk among different endocrine glands to improve male fertility; and how Withania somnifera supplementation mitigates risk factor-induced male infertility as well as ameliorates male fertility.

61 citations


Journal ArticleDOI
TL;DR: This study is first report on heterologous expression and kinetic characterization of any gene from rose-scented geranium through a genetic transformation system and first report showing the expression profile of the three genes related to isoprenoid biosynthesis pathways operated in rose-Scented Geranium.
Abstract: Rose-scented geranium (Pelargonium spp.) is one of the most important aromatic plants and is well known for its diverse perfumery uses. Its economic importance is due to presence of fragrance rich essential oil in its foliage. The essential oil is a mixture of various volatile phytochemicals which are mainly terpenes (isoprenoids) in nature. In this study, on the geranium foliage genes related to isoprenoid biosynthesis (DXS, DXR and HMGR) were isolated, cloned and confirmed by sequencing. Further, the first gene of 2-C-methyl-d-erythritol-4-phosphate (MEP) pathway, 1-deoxy-d-xylulose-5-phosphate synthase (GrDXS), was made full length by using rapid amplification of cDNA ends strategy. GrDXS contained a 2157 bp open reading frame that encoded a polypeptide of 792 amino acids having calculated molecular weight 77.5 kDa. This study is first report on heterologous expression and kinetic characterization of any gene from this economically important plant. Expression analysis of these genes was performed in different tissues as well as at different developmental stages of leaves. In response to external elicitors, such as methyl jasmonate, salicylic acid, light and wounding, all the three genes showed differential expression profiles. Further GrDXS was over expressed in the homologous (rose-scented geranium) as well as in heterologous (Withania somnifera) plant systems through genetic transformation approach. The over-expression of GrDXS led to enhanced secondary metabolites production (i.e. essential oil in rose-scented geranium and withanolides in W. somnifera). To the best of our knowledge, this is the first report showing the expression profile of the three genes related to isoprenoid biosynthesis pathways operated in rose-scented geranium as well as functional characterization study of any gene from rose-scented geranium through a genetic transformation system.

59 citations


Journal Article
TL;DR: In this paper, the authors evaluated the antioxidant and antibacterial activity of aqueous root extract of W. somnifera against methicillin resistant Staphylococcus aureus (MRSA).
Abstract: Withania somnifera also known as Ashwagandha, has been an important herb in the ayurvedic and indigenous medical systems. The present study was designed to evaluate the antioxidant and antibacterial activity of aqueous root extract of W. somnifera against methicillin resistant Staphylococcus aureus (MRSA). Aqueous root extract of the plant was found to possess strong antibacterial activity against MRSA as revealed by the in -vitro agar well diffusion assay. The separation of the bioactive compounds from the plant extract was carried out using two dimensional thin layer chromatography (TLC) and contact bioautography. Two TLC spots were found to be bioactive against the pathogen with minimum inhibitory concentrations of 2.3 μg/μl and 5.2 μg/μl respectively. One spot was of alkaloids and the other one was a mixture of essential oil and phenolics. The antioxidant activity was estimated to be Trolox Equivalent Antioxidant Capacity of 9.83mg/gm of dry weight of extract and reducing power was 0.11mg/gm of dry weight of extract using ascorbic acid as standard. Our study suggests that the bioactive fractions separated from aqueous extract of W. somnifera is a potential source of antibacterial compounds with antioxidant property. Keywords: Ashwagandha, contact bioautography, phenolics, flavonoids, essential oil

50 citations


Journal ArticleDOI
03 Nov 2017-Cytokine
TL;DR: Withanone (WS‐2), a compound isolated from root extract of Withania somnifera at doses administered orally/day to wistar rats for duration of 21 days showed significant improvement in the cognitive skill by inhibiting amyloid and attenuated the elevated levels of pro‐inflammatory cytokines.

48 citations


Journal ArticleDOI
TL;DR: The metabolite profiling of ashwagandha root hydroalcoholic extract was described using ultra‐performance liquid chromatography coupled with a positive ion electrospray ionization tandem mass spectrometry and NMR spectroscopy and a total of 43 possible withanolides was identified and proposed their structures based on the mass of molecular and fragment ions.
Abstract: Ashwagandha (Withania somnifera) is a very well-known herbal medicine and it was well studied for its active metabolites throughout the World. Although, nearly 40 withanolides were isolated from W. somnifera root extract, still there is remaining unidentified metabolites due to very low abundance and geographical variation. Advanced separation technology with online identification by mass and nuclear magnetic resonance (NMR) are nowadays used to find out the new compounds in the crude herbal extract. This article described the metabolite profiling of ashwagandha root hydroalcoholic extract using ultra-performance liquid chromatography coupled with a positive ion electrospray ionization tandem mass spectrometry through gas chromatography mass spectrometry (GC/MS) and NMR spectroscopy. A total of 43 possible withanolides was identified and proposed their structures based on the mass of molecular and fragment ions. GC/MS and NMR analysis indicated the presence of several known withanolides including withaferin A, withanolide D, withanoside IV or VI, withanolide sulfoxide, etc. To the best of our knowledge, dihydrowithanolide D at m/z 473 (tR 7.86 min) and ixocarpalactone A at m/z 505 (tR 8.43 min) were first time identified in the ashwagandha root hydroalcoholic extract. The current study that described the identification of withanolides with summarized literature review might be helpful for designing the experiment to identify of the new chemical constituents in Withania species.

44 citations


Journal ArticleDOI
TL;DR: Evaluating Withanone, one of the active constituents of Withania somnifera against NMDA-induced excitotoxicity in retinoic acid, differentiated Neuro2a cells suggests that Withan one may serve as potential neuroprotective agent.
Abstract: Withania somnifera has immense pharmacologic and clinical uses. Owing to its similar pharmacologic activity as that of Korean Ginseng tea, it is popularly called as Indian ginseng. In most cases, extracts of this plant have been evaluated against various diseases or models of disease. However, little efforts have been made to evaluate individual constituents of this plant for neurodegenerative disorders. Present study was carried out to evaluate Withanone, one of the active constituents of Withania somnifera against NMDA-induced excitotoxicity in retinoic acid, differentiated Neuro2a cells. Cells were pre-treated with 5, 10 and 20 μM doses of Withanone and then exposed to 3-mM NMDA for 1 h. MK801, a specific NMDA receptor antagonist, was used as positive control. The results indicated that NMDA induces significant death of cells by accumulation of intracellular Ca2+, generation of reactive oxygen species (ROS), loss of mitochondrial membrane potential, crashing of Bax/Bcl-2 ratio, release of cytochrome c, increased caspase expression, induction of lipid peroxidation as measured by malondialdehyde levels and cleavage of poly(ADP-ribose) polymerase-1 (Parp-1), which is indicative of DNA damage. All these parameters were attenuated with various doses of Withanone pre-treatment. These results suggest that Withanone may serve as potential neuroprotective agent.

43 citations


Journal ArticleDOI
TL;DR: The present review summarizes the phytochemical variability and pharmacological advances reported in literature.
Abstract: Withania somnifera Dunal, is a commonly used herb in Indian Ayurvedic medicine system. Due to its pharmacological value and an inexhaustible source of novel biologically active compounds, it has been a great interest for researchers. The plant is known to possess anti-inflammatory, antitumor, antistress, antioxidant, immunomodulatory and hemopoetic properties. Various withanolides, steroidal lactones, have been isolated from W. somnifera and were known to have high therapeutic value. Based on the differences in the substitution patterns of withanolides the species has been classified into various chemotypes. So far, three different chemotypes have been identified, which have been further classified into ecotypes based on the contents of withanolides. Present review summarizes the phytochemical variability and pharmacological advances reported in literature.

Journal ArticleDOI
TL;DR: ASH could be a key regulator in maintaining the synaptic plasticity in HFD induced obesity and can serve as a nootropic candidate against obesity induced cognitive impairments.
Abstract: Sedentary lifestyle, psychological stress and labor saving devices in this current society often disrupts the energy gain and expenditure balance leading to obesity. High caloric diet is associated with the high prevalence of cognitive dysfunction and neuropsychiatric disorders in addition to cardiovascular and metabolic abnormalities. The present study was aimed to elucidate the potential beneficial effect of dry leaf powder of Withania somnifera (Ashwagandha) in preventing the cognitive decline associated with diet induced obesity. Experiments were performed on four groups of young adult female rats: [Low fat diet (LFD) rats fed on regular low fat chow, High fat diet (HFD) rats on feed containing 30% fat by weight, Low fat diet extract (LFDE) rats given regular chow and dry leaf powder of Ashwagandha 1 mg/g of body weight (ASH) and high fat diet extract (HFDE) rats fed on diet containing high fat and dry leaf powder of ASH. All the rats were kept on their respective diet regimen for 12 weeks. ASH treated rats showed significant improvement in their working memory and locomotor coordination during behavioral studies as compared to HFD rats. At the molecular level, ASH treatment was observed to restore the levels of BDNF and its receptor TRKB as well as the expression of other synaptic regulators, which are highly implicated in synaptic plasticity. Further, ASH triggered the activation of PI3/AKT pathway of cell survival and plasticity by enhancing the levels of phosphorylated Akt-1 and immediate early genes viz. c-Jun and c-fos. ASH could be a key regulator in maintaining the synaptic plasticity in HFD induced obesity and can serve as a nootropic candidate against obesity induced cognitive impairments.

Journal ArticleDOI
TL;DR: This study provides scientific validation to the anxiolytic, anti-inflammatory and anti-apoptotic properties of ASH-WEX, which may serve as an effective dietary supplement for management of SD induced stress and associated functional impairments.
Abstract: Sleep is a profound regulator of cellular immunity, and the curtailment of sleep in present day lifestyle leads to disruption of neuro-immune–endocrine interactions. No therapeutic remedy is yet known for the amelioration of detrimental effects caused by sleep deprivation (SD). The current study was aimed to elucidate the effects of acute SD on immune function and its modulation by water extract from leaves of Withania somnifera (ASH-WEX). Three groups of animals, i.e. Vehicle-Undisturbed sleep (VUD), Vehicle-Sleep deprived (VSD) and ASH-WEX fed sleep deprived (WSD) rats were tested for their anxiety-like behaviour and further used for the study of inflammatory and apoptotic markers expression in piriform cortex and hippocampus regions of the brain. VSD animals showed high level of anxiety in elevated plus maze test, which was ameliorated in WSD group. The stress induced expression of inflammatory and immune response markers GFAP, TNFα, IL-6, OX-18 and OX-42 in VSD animals was found to be modulated by ASH-WEX. Further, the stress induced apoptosis was suppressed in WSD group as indicated by expression of NF-κB, AP-1, Bcl-xL and Cytochrome c. This study provides scientific validation to the anxiolytic, anti-inflammatory and anti-apoptotic properties of ASH-WEX, which may serve as an effective dietary supplement for management of SD induced stress and associated functional impairments.

Journal ArticleDOI
TL;DR: Root extract of Withania somnifera (Ashwagandha), an herbal medicine with anti-inflammatory properties, was investigated in transgenic mice expressing a genomic fragment encoding human TDP-43A315T mutant and it reversed the cytoplasmic mislocalization of hT DP-43 in spinal motor neurons and in brain cortical neurons and it reduced hTDP- 43 aggregation.

Journal ArticleDOI
TL;DR: Data suggest that Ashwagandha may be a potential agent to suppress the acute effects of sleep loss on learning and memory impairments and may emerge as a novel supplement to control SD-induced cognitive impairments.
Abstract: Modern lifestyle and sustained stress of professional commitments in the current societal set up often disrupts the normal sleep cycle and duration which is known to lead to cognitive impairments. In the present study, we report whether leaf extract of Withania somnifera (Ashwagandha) has potential neuroprotective role in acute stress of sleep deprivation. Experiments were performed on three groups of adult Wistar rats: group 1 (vehicle treated-undisturbed sleep [VUD]), group 2 (vehicle treated-sleep deprived [VSD]), and group 3 (ASH-WEX treated-sleep deprived [WSD]). Groups 1 and 2 received single oral feeding of vehicle and group 3 received ASH-WEX orally (140 mg/kg or 1 ml/250 g of body weight) for 15 consecutive days. Immediately after this regimen, animals from group 1 were allowed undisturbed sleep (between 6 a.m. and 6 p.m.), whereas rats of groups 2 and 3 were deprived of sleep during this period. We observed that WSD rats showed significant improvement in their performance in behavioral tests as compared to VSD group. At the molecular level, VSD rats showed acute change in the expression of proteins involved in synaptic plasticity, cell survival, and apoptosis in the hippocampus region of brain, which was suppressed by ASH-WEX treatment thus indicating decreased cellular stress and apoptosis in WSD group. This data suggest that Ashwagandha may be a potential agent to suppress the acute effects of sleep loss on learning and memory impairments and may emerge as a novel supplement to control SD-induced cognitive impairments.

Journal ArticleDOI
TL;DR: The implementation of latest bioinformatic tools in combination with biotechnological techniques for breeding platforms are important in conservation of medicinal plant species in danger.

Journal ArticleDOI
TL;DR: In this article, an evidence-based systematic review and meta-analysis using Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines was performed to evaluate the efficacy and safety of W. somnifera treatment in infertile men.

Journal ArticleDOI
TL;DR: Hochst et al. as discussed by the authors evaluated in vitro antibacterial, antiproliferative and antioxidant activities of methanolic leaf extracts and SGAFs of Solanum incanum L., S. schimperianum Hochst, S. nigrum L. and Withania somnifera (L) Dunal.

Journal ArticleDOI
TL;DR: Methanolic extract of WC possesses apoptotic activity against human breast cancer cells in vitro albeit lower in comparison to W. somnifera and warrants further investigation.

Journal ArticleDOI
16 Feb 2017-PLOS ONE
TL;DR: Results clearly demonstrated that triethylene glycol is an active sleep-inducing component of Ashwagandha leaves and could potentially be useful for insomnia therapy.
Abstract: Insomnia is the most common sleep complaint which occurs due to difficulty in falling asleep or maintaining it. Most of currently available drugs for insomnia develop dependency and/or adverse effects. Hence natural therapies could be an alternative choice of treatment for insomnia. The root or whole plant extract of Ashwagandha (Withania somnifera) has been used to induce sleep in Indian system of traditional home medicine, Ayurveda. However, its active somnogenic components remain unidentified. We investigated the effect of various components of Ashwagandha leaf on sleep regulation by oral administration in mice. We found that the alcoholic extract that contained high amount of active withanolides was ineffective to induce sleep in mice. However, the water extract which contain triethylene glycol as a major component induced significant amount of non-rapid eye movement sleep with slight change in rapid eye movement sleep. Commercially available triethylene glycol also increased non-rapid eye movement sleep in mice in a dose-dependent (10–30 mg/mouse) manner. These results clearly demonstrated that triethylene glycol is an active sleep-inducing component of Ashwagandha leaves and could potentially be useful for insomnia therapy.

Journal ArticleDOI
TL;DR: The results demonstrate for the first time that Tinospora cordifolia and Withania somnifera extracts support proliferation and inhibit senescence in WJMSCs making them suitable candidates as supplements for in-vitro expansion without affecting the cell viability indicating its non-toxic nature.

Journal ArticleDOI
TL;DR: These standardized transformation procedues have been used to overexpress/silence desired gene in W. somnifera to understand the outcome and succeed with enhanced metabolic production for the ultimate benefit of human race.
Abstract: Withania somnifera, commonly known as Ashwagandha an important medicinal plant largely used in Ayurvedic and indigenous medicine for over 3,000 years. Being a medicinal plant, dried powder, crude extract as well as purified metabolies of the plant has shown promising therapeutic properties. Withanolides are the principal metabolites, responsible for the medicinal properties of the plant. Availability and amount of particular withanolides differ with tissue type and chemotype and its importance leads to identification characterization of several genes/ enzymes related to withanolide biosynthetic pathway. The modulation in withanolides can be achieved by controlling the environmental conditions like, different tissue culture techniques, altered media compositions, use of elicitors, etc. Among all the in vitro techniques, hairy root culture proved its importance at industrial scale, which also gets benefits due to more accumulation (amount and number) of withanolides in roots tissues of W. somnifera. Use of media compostion and elicitors further enhances the amount of withanolides in hairy roots. Another important modern day technique used for accumulation of desired secondary metabolites is modulating the gene expression by altering environmental conditions (use of different media composition, elicitors, etc.) or through genetic enginnering. Knowing the significance of the gene and the key enzymatic step of the pathway, modulation in withanolide contents can be achieved upto required amount in therapeutic industry. To accomplish maximum productivity through genetic enginnering different means of Withania transformation methods have been developed to obtain maximum transformation efficiency. These standardized transformation procedues have been used to overexpress/silence desired gene in W. somnifera to understand the outcome and succeed with enhanced metabolic production for the ultimate benefit of human race.

Journal ArticleDOI
TL;DR: High heritability in conjunction with high genetic advance was observed for fresh root weight, 12 deoxywithastramonolide in roots, and plant height, which indicated that selection could be effective for these traits and there is also scope for the selection of promising and specific chemotypes from the present germplasm.

Journal ArticleDOI
Seema Ahlawat1, Parul Saxena1, Athar Ali1, Shazia Khan1, Malik Zainul Abdin1 
TL;DR: The genes of MVA, MEP and withanolides biosynthetic pathways like HMGR, SS, SE, CAS, FPPS, DXR and DXS were up-regulated by 12.5% in comparison to the control in shake flask and in bioreactor was found to be in line with the up-regulation of genes of withanolide biosynthesis pathways.

Journal ArticleDOI
TL;DR: The results implicated simple physiological management of nitrogen fertilizer signal to improve the yield of secondary metabolite through probable involvement of jasmonate signal and WRKY transcription factor for the first time, in W. somnifera besides improving the foliage.
Abstract: The medicinal plant Withania somnifera is researched extensively to increase the quantity of withanolides and specifically withaferin A, which finds implications in many pharmacological activities. Due to insufficient knowledge on biosynthesis and unacceptability of transgenic approach, it is preferred to follow alternative physiological methods to increase the yield of withanolides. Prior use of elicitors like salicylic acid, methyl jasmonate, fungal extracts, and even mechanical wounding have shown to increase the withanolide biosynthesis with limited success; however, the commercial viability and logistics of application are debatable. In this investigation, we tested the simple nitrogeneous fertilizers pertaining to the enhancement of withaferin A biosynthesis. Application of ammonium sulfate improved the sterol contents required for the withanolide biosynthesis and correlated to higher expression of pathway genes like FPPS, SMT1, SMT2, SMO1, SMO2, and ODM. Increased expression of a gene homologous to allene oxide cyclase, crucial in jasmonic acid biosynthetic pathway, suggested the involvement of jasmonate signaling. High levels of WRKY gene transcripts indicated transcriptional regulation of the pathway genes. Increase in transcript level could be correlated with a corresponding increase in the protein levels for WsSMT1 and WsWRKY1. The withaferin A increase was also demonstrated in the potted plants growing in the glasshouse and in the open field. These results implicated simple physiological management of nitrogen fertilizer signal to improve the yield of secondary metabolite through probable involvement of jasmonate signal and WRKY transcription factor for the first time, in W. somnifera besides improving the foliage.

Journal ArticleDOI
TL;DR: Alkaloids and flavonoids were the most important contributors in the antioxidant and reducing activities of the extracts and Methanol–chloroform–water extract had the highest content of phytochemical constituents, except tannins, and also exhibited the highest antioxidant and reduction activities.

Journal ArticleDOI
TL;DR: Dry leaf powder of W. somnifera may prove to be a potential therapeutic agent to attenuate neuroinflammation associated with obesity and may prevent its co-morbidities.
Abstract: The epidemic of obesity has reached alarming levels in both developing and developed nations. Excessive calorie intake and sedentary lifestyle due to technological advancements are the main causal factors for overweight and obesity among the human population. Obesity has been associated with a number of co-morbidities such as hypertension, type 2 diabetes mellitus, cardiovascular diseases, and neurodegeneration and dementia. The progression of neurological disorders in obese subjects has been mainly attributed to neuroinflammation. Withania somnifera has been used in numerous Ayurvedic formulations owing to its wide array of health-promoting properties. The current study was designed to test the hypothesis whether dry leaf powder of W. somnifera has anxiolytic and anti-neuroinflammatory potential in diet-induced obesity. Young adult female rats were divided into four groups: low fat diet group (LFD) fed with regular chow feed, high fat diet group (HFD) fed with diet containing 30% fat by weight, low fat diet plus extract group (LFDE) fed with regular chow feed supplemented with dry leaf powder of W. somnifera 1 mg/g of body weight (ASH), and high fat diet plus extract group (HFDE) fed with diet containing 30% fat by weight and supplemented with ASH. All the animals were kept on respective feeding regimen for 12 weeks; following which, the animals were tested for their anxiety-like behavior using elevated plus maze test. The animals were sacrificed and used to study various inflammatory markers such as GFAP, Iba1, PPARγ, iNOS, MCP-1, TNFα, IL-1β, IL-6, and various markers of NF-κB pathway by Western blotting and quantitative real-time PCR. Serum levels of leptin, insulin and pro-inflammatory cytokines were also assayed. ASH treated rats showed less anxiety levels as compared to HFD animals. At molecular level, ASH ameliorated the HFD-induced reactive gliosis and microgliosis and suppressed the expression of inflammatory markers such as PPARγ, iNOS, MCP-1, TNFα, IL-1β, and IL-6. Further, ASH ameliorated leptin and insulin resistance and prevented HFD-induced apoptosis. Dry leaf powder of W. somnifera may prove to be a potential therapeutic agent to attenuate neuroinflammation associated with obesity and may prevent its co-morbidities.

Journal ArticleDOI
18 Jan 2017
TL;DR: The findings suggested that the herbal preparations used during the study were effective as both prophylactic and immunomodulatory agents and thus have potential of being used against CIAV induced immunosuppression in poultry.
Abstract: Chicken infectious anaemia virus (CIAV) is an economically important and a highly immunosuppressive virus affecting poultry industry worldwide. In this study we assessed the immunomodulatory effects of four herbal preparations namely Withania somnifera, Tinospora cordifolia, Azadirachta indica and E Care Se Herbal in resisting the viral multiplication and immunosuppression inflicted by CIAV in chicks. Day-old chicks (n = 90) were randomly and equally divided into six groups (Groups A-F). Groups A-D were administered with purified extracts of W. somnifera, T. cordifolia, A. indica and E Care Se Herbal, respectively followed by the evaluation of viral load in lymphoid organs by quantitative real-time PCR and cell mediated immune response by flow cytometric analysis of CD4+ and CD8+ T cells. Groups A-D were found to resist CIAV multiplication and pathogenesis with significant reduction of viral load compared with the infected control (P < 0.05). Group A-C chicks showed significantly higher (P < 0.05) CD4+ and CD8+ T cell counts compared to control birds while of E Care Se Herb had minimal effect on T cell count. The findings suggested that the herbal preparations used during the study were effective as both prophylactic and immunomodulatory agents and thus have potential of being used against CIAV induced immunosuppression in poultry.

Journal ArticleDOI
TL;DR: It is proposed that the RA patients should use reported compounds for the prescription of RA by targeting TNF-α, and twenty unique molecules were retrieved that displayed utmost binding affinity, least binding energies and effective drug properties.
Abstract: From last decade, there has been progressive improvement in computational drug designing. Several diseases are being cured from different plant extracts and products. Rheumatoid Arthritis (RA) is the most shared disease among auto-inflammatory diseases. Tumour necrosis factor (TNF)-α is associated with RA pathway and has adverse effects. Extensive literature review showed that plant species under study (Cannabis sativa, Prunella vulgaris and Withania somnifera) possess anti-inflammatory, anti-arthritic and anti-rheumatic properties. 13 anti-inflammatory compounds were characterised and filtered out from medicinal plant species and analysed for RA by targeting TNF-α through in silico analyses. By using ligand based pharmacophore generation approach and virtual screening against natural products libraries we retrieved twenty unique molecules that displayed utmost binding affinity, least binding energies and effective drug properties. The docking analyses revealed that Ala-22, Glu-23, Ser-65, Gln-67, Tyr-141, Leu-142, Asp-143, Phe-144 and Ala-145 were critical interacting residues for receptor-ligand interactions. It is proposed that the RA patients should use reported compounds for the prescription of RA by targeting TNF-α. This report is opening new dimensions for designing innovative therapeutic targets to cure RA.

30 Mar 2017
TL;DR: Ethnopharmacological and chemical research on Withania somnifera proves that plant extracts have a wide range of applications, and the variability in chemistry of this plant seems important, so future studies and research on the pharmacological activities should provide more chemical profile which will increase their validity.
Abstract: Withania somnifera is an important medicinal plant used in Pakistan from the old time by the herbalists in making different medicines. The history of this plant comes from Unani and Ayurvedic system. Ethnopharmacological and chemical research on Withania somnifera proves that plant extracts have a wide range of applications. The Withania somnifera mostly utilized for its anti-inflammatory effect, anti-cancer, antibacterial, antifungal, cardiovascular effects and for various other activities as well. Its chemical constituents also showed an awesome antibacterial activity against Escherichia coli, Pesudomanas fluorescens, Bacillus stubtilis, Staphylococcus aureus, Xanthomonas axonopodis and Puccinia malvacearum. Still, a well conducted biological research for several applications of this plant is required. The variability in chemistry of this plant seems important, so future studies and research on the pharmacological activities of these plant extracts should provide more chemical profile which will increase their validity.