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Gymnema sylvestre

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https://www.readbyqxmd.com/read/29042257/in-vivo-pharmacokinetic-interaction-by-ethanolic-extract-of-gymnema-sylvestre-with-cyp2c9-tolbutamide-cyp3a4-amlodipine-and-cyp1a2-phenacetin-in-rats
#1
Madhuri Vaghela, Niteshkumar Sahu, Prashant Kharkar, Nancy Pandita
Gymnema sylvestre (GS) is a medicinal herb used for diabetes mellitus (DM). Herbs are gaining popularity as medicines in DM for its safety purpose. The aim of the present study was to evaluate in vivo pharmacokinetic (PK) interaction between allopathic drugs tolbutamide (TOLBU), amlodipine (AMLO), and phenacetin (PHENA) at low (L) and high (H) doses with ethanolic extract (EL) from GS. EL was extracted and subjected to TLC, total triterpenoid content (19.76 ± 0.02 W/W) and sterol content (0.1837 ± 0...
October 16, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29019074/in-vitro-inhibitory-effect-of-gymnema-sylvestre-extracts-and-total-gymnemic-acids-fraction-on-select-cytochrome-p450-activities-in-rat-liver-microsomes
#2
Madhuri Vaghela, Krishna Iyer, Nancy Pandita
BACKGROUND AND OBJECTIVES: Gymnema sylvestre R. Br. is a well-known Indian medicinal herb. Gymnemic acids are pentacyclic triterpenes saponins and active phytoconstituents of Gymnema sylvestre. The study aimed at evaluation of the in vitro rat liver cytochrome P450 (CYP) inhibition potential of extracts and total gymnemic acid (TA)-enriched fractions from G. sylvestre. METHODS: Standardization of G. sylvestre [ethanolic (EL), hydroethanolic (HE), total acid of ethanolic (TAE), total acid of hydroethanolic (TAHE) and total acid of aqueous (TAAQ) extract] was done with respect to deacyl gymnemic acid (DAGA), using reverse phase-high performance liquid chromatography (RP-HPLC)...
October 10, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28905086/identification-and-characterization-of-a-novel-vibo-quercitol-1-dehydrogenase-from-burkholderia-terrae-suitable-for-production-of-vibo-quercitol-from-2-deoxy-scyllo-inosose
#3
Nobuya Itoh, Junji Kurokawa, Hiroshi Toda, Kazunobu Konishi
(-)-vibo-Quercitol is a deoxyinositol (1L-1,2,4/3,5-cyclohexanepentol) that naturally occurs in oak species, honeydew honey, wines aged in oak barrels, and Gymnema sylvestre and is a potential intermediate for pharmaceuticals. We found that (-)-vibo-quercitol is stereoselectively synthesized from 2-deoxy-scyllo-inosose by the reductive reaction of a novel (-)-vibo-quercitol 1-dehydrogenase found in the proteomes of Burkholderia, Pseudomonas, and Arthrobacter. Among them, Burkholderia terrae sp. AKC-020 (40-1) produced a (-)-vibo-quercitol 1-dehydrogenase appropriate for synthesizing (-)-vibo-quercitol with a high diastereomeric excess...
September 13, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28729836/an-overview-of-herbal-products-and-secondary-metabolites-used-for-management-of-type-two-diabetes
#4
REVIEW
Ajda Ota, Nataša P Ulrih
Diabetes mellitus is a common effect of uncontrolled high blood sugar and it is associated with long-term damage, dysfunction, and failure of various organs. In the adult population, the global prevalence of diabetes has nearly doubled since 1980. Without effective prevention and management programs, the continuing significant rise in diabetes will have grave consequences on the health and lifespan of the world population, and also on the world economy. Supplements can be used to correct nutritional deficiencies or to maintain an adequate intake of certain nutrients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28658801/hypolipidaemic-effects-of-gymnema-sylvestre-on-high-fat-diet-induced-dyslipidaemia-in-wistar-rats
#5
Dheeraj Kumar Singh, Narendra Kumar, Anjula Sachan, Preet Lakhani, Sachin Tutu, Rajendra Nath, Amod Kumar Sachan, Rakesh Kumar Dixit
INTRODUCTION: Hyperlipidaemia is a well known risk factor for cardiovascular diseases. Lifestyle modification can be the initial step to reduce cholesterol levels. There are various drugs which are used to control dyslipidaemia. Treatment of lipid abnormalities is a lifelong battle. Moreover, the safety and effectiveness of long term lipid lowering treatment are questionable. Gymnema Sylvestre (GS) is a well known herb with various medicinal properties. AIM: To explore the hypolipidaemic activity of GS leaves extract...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28625957/studies-on-antihyperlipidemic-and-endothelium-modulatory-activities-of-polyherbal-formulation-pol4-and-its-ingredients-in-high-fat-diet-fed-rats
#6
Abdul Malik, Malik Hassan Mehmood, Muhammad Shoaib Akhtar, Ghulam Haider, Anwarul Hassan Gilani
A compound herbal formulation (POL4) is used traditionally in interior parts (Distt. Badin) of Sindh, Pakistan, for the treatment of metabolic disorders like diabetes and hyperlipidemia. This study is aimed to determine the effectiveness of POL4 and its ingredients in hyperlipidemia and associated endothelial dysfunction and hypertension. POL4 is composed of equal proportion of Nigella sativa, Cichorium intybus, Trigonella foenum graecum and Gymnema sylvestre mixed in powdered form. Chronic (6 to 7 weeks) administration of POL4 and its ingredients mixed in diet caused a notable attenuation in total cholesterol, low density lipoprotein cholesterol, triglycerides, atherogenic index, C-reactive protein and glucose, while it has increased high density lipoprotein levels...
January 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28606563/participants-with-pharmacologically-impaired-taste-function-seek-out-more-intense-higher-calorie-stimuli
#7
Corinna A Noel, Meaghan Sugrue, Robin Dando
OBJECTIVE: Research suggests a weaker sense of taste in people with obesity, with the assumption that a debilitated taste response increases the desire for more intensely tasting stimuli to compensate for decreased taste input. However, empirical testing of this supposition remains largely absent. METHOD: In a randomized, repeated measures design, 51 healthy subjects were treated with varying concentrations of a tea containing Gymnema sylvestre (GS), to temporarily and selectively diminish sweet taste perception, or a control tea...
October 1, 2017: Appetite
https://www.readbyqxmd.com/read/28587443/in-vitro-antimicrobial-potential-of-extracts-and-phytoconstituents-from-gymnema-sylvestre-r-br-leaves-and-their-biosafety-evaluation
#8
Daljit Singh Arora, Henna Sood
The in vitro antimicrobial screening of Gymnema sylvestre leaves against 13 test pathogens established its broad spectrum activity with average inhibition zone ranging from 14 to 23 mm. The antimicrobial activity of the classically- optimized aqueous extract was enhanced up to 1.45 folds, when subjected to statistical optimization using Response Surface Methodology (RSM) and was thermostable. Ethyl acetate was found to be the best organic extractant with Klebsiella pneumoniae 1 (31.5 mm) and Staphylococcus epidermidis (25...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28514906/the-effects-of-gymnema-sylvestre-in-high-fat-diet-induced-metabolic-disorders
#9
Hyeon-Jeong Kim, Sanghwa Kim, Ah Young Lee, Yoonjeong Jang, Orkhonselenge Davaadamdin, Seong-Ho Hong, Jun Sung Kim, Myung-Haing Cho
This study used an integrated approach to investigate the effects of Gymnema sylvestre (GS) extract as a functional dietary supplement with a high-fat diet. This approach examined insulin resistance, the dysfunction of adipose tissue, and liver steatosis. Male C57BL/6J mice were fed a normal chow or high-fat diet (HFD) for the acute and chronic study, in addition to GS in different doses (100, 250 and 500[Formula: see text]mg/kg body weight). Their body composition changes, serum lipid and glucose parameters, adipose and liver tissue histology, and gene expression were measured...
2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28496409/rapid-screening-for-%C3%AE-glucosidase-inhibitors-from-gymnema-sylvestre-by-affinity-ultrafiltration-hplc-ms
#10
Guilin Chen, Mingquan Guo
Gymnema sylvestre R. Br. (Asclepiadaceae) has been known to posses potential anti-diabetic activity, and the gymnemic acids were reported as the main bioactive components in this plant species. However, the specific components responsible for the hypoglycemic effect still remain unknown. In the present study, the in vitro study revealed that the extract of G. sylvestre exhibited significant inhibitory activity against α-glucosidase with IC50 at 68.70 ± 1.22 μg/mL compared to acarbose (positive control) at 59...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28459647/effect-of-gymnema-sylvestre-administration-on-metabolic-syndrome-insulin-sensitivity-and-insulin-secretion
#11
Laura Y Zuñiga, Manuel González-Ortiz, Esperanza Martínez-Abundis
Gymnema sylvestre is a medicinal plant whose consumption has demonstrated benefits on lipid and glucose levels, blood pressure, and body weight (BWt). The aim of this study was to evaluate the effect of G. sylvestre administration on metabolic syndrome (MetS), insulin secretion, and insulin sensitivity. A randomized, double-blind, placebo-controlled clinical trial was carried out in 24 patients (without pharmacological treatment), 30-60 years old, with diagnosis of MetS in accordance with the modified International Diabetes Federation criteria...
August 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28431091/suppression-of-oral-sweet-taste-sensation-with-gymnema-sylvestre-affects-postprandial-gastrointestinal-blood-flow-and-gastric-emptying-in-humans
#12
Hideaki Kashima, Kohei Eguchi, Kanae Miyamoto, Masaki Fujimoto, Masako Yamaoka Endo, Nami Aso-Someya, Toshio Kobayashi, Naoyuki Hayashi, Yoshiyuki Fukuba
An oral sweet taste sensation (OSTS) exaggerates digestive activation transiently, but whether it has a role after swallowing a meal is not known. Gymnema sylvestre (GS) can inhibit the OSTS in humans. We explored the effect of the OSTS of glucose intake on gastrointestinal blood flow, gastric emptying, blood-glucose, and plasma-insulin responses during the postprandial phase. Eight participants ingested 200 g (50 g × 4 times) of 15% glucose solution containing 100 mg of 13C-sodium acetate after rinsing with 25 mL of 2...
May 1, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28330304/elicitation-of-gymnemic-acid-production-in-cell-suspension-cultures-of-gymnema-sylvestre-r-br-through-endophytic-fungi
#13
Vasudeva Reddy Netala, Venkata Subbaiah Kotakadi, Susmila Aparna Gaddam, Sukhendu Bikash Ghosh, Vijaya Tartte
The enhancement of plant secondary metabolite production in cell suspension cultures through biotic or abiotic elicitation has become a potential biotechnological approach for commercialization or large-scale production of bioactive compounds. Gymnema sylvestre R.Br. is an important medicinal plant, rich in a group of oleanane triterpenoid saponins called gymnemic acid, well known for its anti-diabetic activity. Two endophytic fungal strains were isolated from the leaves of G. sylvestre and identified as Polyancora globosa and Xylaria sp...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28270141/pharmacological-basis-for-the-medicinal-use-of-polyherbal-formulation-and-its-ingredients-in-cardiovascular-disorders-using-rodents
#14
Abdul Malik, Malik Hassan Mehmood, Hajra Channa, Muhammad Shoaib Akhtar, Anwarul-Hassan Gilani
BACKGROUND: A compound herbal formulation (POL4) has been used in the indigenous system of medicine to treat cardiometabolic disorders like diabetes and associated hypertension. POL4 and most of its constituents have not been studied widely for its therapeutic use in hypertension. This study is aimed to determine the efficacy and possible insight into mechanism(s) for the medicinal use of POL4 and its ingredients in hypertension. METHODS: The aqueous methanolic extracts of POL4 (POL4...
March 7, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28256837/determination-of-gymnemic-acid-i-as-a-protein-biosynthesis-inhibitor-using-chemical-proteomics
#15
Angela Capolupo, Roberta Esposito, Angela Zampella, Carmen Festa, Raffaele Riccio, Agostino Casapullo, Alessandra Tosco, Maria Chiara Monti
The plant Gymnema sylvestre has been used widely in traditional medicine as a remedy for several diseases, and its leaf extract is known to contain a group of bioactive triterpene saponins belonging to the gymnemic acid class. Gymnemic acid I (1) is one of the main components among this group of secondary metabolites and is endowed with an interesting bioactivity profile. Since there is a lack of information about its specific biological targets, the full interactome of 1 was investigated through a quantitative chemical proteomic approach, based on stable-isotope dimethyl labeling...
April 28, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28199551/suppression-of-oral-sweet-taste-sensation-with-gymnema-sylvestre-affects-postprandial-gastrointestinal-blood-flow-and-gastric-emptying-in-humans
#16
Hideaki Kashima, Kohei Eguchi, Kanae Miyamoto, Masaki Fujimoto, Masako Yamaoka Endo, Nami Aso-Someya, Toshio Kobayashi, Naoyuki Hayashi, Yoshiyuki Fukuba
No abstract text is available yet for this article.
February 12, 2017: Chemical Senses
https://www.readbyqxmd.com/read/27972834/evaluation-of-antibacterial-and-cytotoxic-effects-of-gymnema-sylvestre-r-br-species-cultivated-in-pakistan-against-common-resistant-pathogens
#17
M Tahir, M S Anjum, M Zahid Tanveer, M Z Iqbal
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27834124/gymnema-sylvestre-for-diabetes-from-traditional-herb-to-future-s-therapeutic
#18
Pragya Tiwari, Khurshid Ahmad, Mohammad Hassan Baig
Diabetes has increased at an unprecedented rate and is fast emerging as a global threat worldwide. The focus on pharmacological studies pertaining to diabetes has seen a remarkable shift from conventional medicines to therapeutics employing bioactive phytomolecules from natural sources. The prospective effectiveness of natural products together with their low cost and minimal side effects has revolutionized the entire concept of drug discovery and management programs. One such beneficial herb is Gymnema sylvestre, possessing remarkable hypoglycemic properties and forms the platform of diabetes therapeutics in the traditional system of medication...
November 8, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27826190/biogenesis-of-silver-nanoparticles-using-endophytic-fungus-pestalotiopsis-microspora-and-evaluation-of-their-antioxidant-and-anticancer-activities
#19
Vasudeva Reddy Netala, Murali Satyanarayana Bethu, Bobbu Pushpalatha, Vijaya Bhaskar Baki, Sani Aishwarya, J Venkateswara Rao, Vijaya Tartte
An endophytic fungal strain isolated from the leaves of Gymnema sylvestre was identified as Pestalotiopsis microspora VJ1/VS1 based on nucleotide sequencing of internal transcribed spacer region (ITS 1-5.8S-ITS 2) of 18S rRNA gene (NCBI accession number KX213894). In this study, an efficient and ecofriendly approach has been reported for the synthesis of silver nanoparticles (AgNPs) using aqueous culture filtrate of P. microspora. Ultraviolet-visible analysis confirmed the synthesis of AgNPs by showing characteristic absorption peak at 435 nm...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27761067/genetic-and-chemical-profiling-of-gymnema-sylvestre-accessions-from-central-india-its-implication-for-quality-control-and-therapeutic-potential-of-plant
#20
Ashutosh Kumar Verma, Sunita Singh Dhawan, Seema Singh, Kumar Avinash Bharati, Jyotsana
BACKGROUND: Gymnema sylvestre, a vulnerable plant species, is mentioned in Indian Pharmacopeia as an antidiabetic drug. OBJECTIVE: Study of genetic and chemical diversity and its implications in accessions of G. sylvestre. MATERIALS AND METHODS: Fourteen accessions of G. sylvestre collected from Central India and assessment of their genetic and chemical diversity were carried out using ISSR (inter simple sequence repeat) and HPLC (high performance liquid chromatography) fingerprinting methods...
July 2016: Pharmacognosy Magazine
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