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Nani A, Bertuzzi F, Meneghini E, Mion E, Pintaudi B. Combined Inositols, α-Lactalbumin, Gymnema Sylvestre and Zinc Improve the Lipid Metabolic Profile of Patients with Type 2 Diabetes Mellitus: A Randomized Clinical Trial. J Clin Med 2023; 12:7650. [PMID: 38137721 PMCID: PMC10743679 DOI: 10.3390/jcm12247650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/27/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is characterized by high blood glucose levels and lipid alterations. Besides pharmacological treatment, lifestyle modifications and nutraceuticals can be used to manage glucose and lipid profiles, which is crucial for preventing, or avoiding, serious consequences associated with the condition. This randomized controlled clinical trial on 75 patients with T2DM evaluated the effects of a combination of myo-inositol and d-chiro-inositol (40:1), α-lactalbumin, Gymnema sylvestre, and zinc on glucose and lipid profile. The intention-to-treat analysis displayed no significant differences in glucose parameters between the groups; however, the study group displayed reduced levels of total cholesterol (p = 0.01) and LDL (p = 0.03) after 3 months of supplementation. A subgroup analysis involving patients who did not modify their antidiabetic therapy, after 6 months displayed improved levels of total cholesterol (p = 0.03) and LDL (p = 0.04) in the study group versus placebo, along with a greater body weight reduction (p = 0.03) after 3 months. Furthermore, within the study group, levels of HDL (p = 0.03) and triglycerides (p = 0.04) improved after 3 months. These findings support supplementation with myo-inositol and d-chiro-inositol (40:1), α-lactalbumin, Gymnema sylvestre, and zinc as an adjuvant and safe strategy to manage the lipid profiles of patients with T2DM.
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Affiliation(s)
- Alessandro Nani
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20133 Milan, Italy
| | | | - Elena Meneghini
- Department of Diabetology, Niguarda Hospital, 20162 Milan, Italy
| | - Elena Mion
- Department of Diabetology, Niguarda Hospital, 20162 Milan, Italy
| | - Basilio Pintaudi
- Department of Diabetology, Niguarda Hospital, 20162 Milan, Italy
- The Experts Group on Inositol in Basic and Clinical Research (EGOI), 00161 Rome, Italy
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Basciani S, Nordio M, Dinicola S, Unfer V, Gnessi L. Diet Plus Inositols, α-Lactalbumin and Gymnema sylvestre: The Successful Combo to Restore Body Weight and Metabolic Profile in Obese and Dysmetabolic Patients. Nutrients 2023; 15:3142. [PMID: 37513560 PMCID: PMC10385591 DOI: 10.3390/nu15143142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
The primary control of dysmetabolic patients is extremely challenging worldwide, with inadequate dietary habits and sporadic physical activity among the key risk factors for metabolic syndrome onset. Nowadays, there is no exclusive treatment for this condition, and considering that preventive measures usually fail, new therapeutic approaches need to be proposed and investigated. This present pilot study compared the effects of diet alone and in association with a combination of myo-inositol and d-chiro-inositol in their 40:1 ratio, α-lactalbumin, and Gymnema sylvestre on different metabolic parameters in obese dysmetabolic patients. To this purpose, 37 patients with BMI between 30 and 40 and fasting blood glucose between 100 and 125 mg/dL were divided into two groups: (i) the control group followed a hypocaloric Mediterranean diet, (ii) while the study group was also supplemented with a daily dosage of two sachets, each one containing 1950 mg myo-inositol, 50 mg d-chiro-inositol, 50 mg α-lactalbumin, and 250 mg Gymnema Sylvestre. After a 6-month treatment, all parameters improved in both groups. Nevertheless, the treated group experienced a greater improvement, especially concerning the variation from the baseline of HOMA index, triglycerides, BMI, body weight, and waist circumference. These findings support the supplementation with myo-inositol and d-chiro-inositol in the 40:1 ratio, α-lactalbumin, and Gymnema sylvestre as a therapeutical strategy to potentiate the beneficial effects induced via dietary programs in dysmetabolic patients.
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Affiliation(s)
- Sabrina Basciani
- Section of Medical Pathophysiology, Food Science and Endocrinology, Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Maurizio Nordio
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy
- The Experts Group on Inositol in Basic and Clinical Research (EGOI), 00161 Rome, Italy
| | - Simona Dinicola
- The Experts Group on Inositol in Basic and Clinical Research (EGOI), 00161 Rome, Italy
- R&D Department, Lo.Li. Pharma, 00156 Rome, Italy
| | - Vittorio Unfer
- The Experts Group on Inositol in Basic and Clinical Research (EGOI), 00161 Rome, Italy
- UniCamillus-Saint Camillus International University of Health Sciences, 00131 Rome, Italy
| | - Lucio Gnessi
- Section of Medical Pathophysiology, Food Science and Endocrinology, Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy
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Muzaffar H, Qamar I, Bashir M, Jabeen F, Irfan S, Anwar H. Gymnema Sylvestre Supplementation Restores Normoglycemia, Corrects Dyslipidemia, and Transcriptionally Modulates Pancreatic and Hepatic Gene Expression in Alloxan-Induced Hyperglycemic Rats. Metabolites 2023; 13:metabo13040516. [PMID: 37110174 PMCID: PMC10142569 DOI: 10.3390/metabo13040516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 04/07/2023] Open
Abstract
Gymnema sylvestre is traditionally used as an herbal remedy for diabetes. The effect of Gymnema sylvestre supplementation on beta cell and hepatic activity was explored in an alloxan-induced hyperglycemic adult rat. Animals were made hyperglycemic via a single inj. (i.p) of Alloxan. Gymnema sylvestre was supplemented in diet @250 mg/kg and 500 mg/kg b.w. Animals were sacrificed, and blood and tissues (pancreas and liver) were collected for biochemical, expression, and histological analysis. Gymnema sylvestre significantly reduced blood glucose levels with a subsequent increase in plasma insulin levels in a dosage-dependent manner. Total oxidant status (TOS), malondialdehyde, LDL, VLDL, ALT, AST, triglyceride, total cholesterol, and total protein levels were reduced significantly. Significantly raised paraoxonase, arylesterase, albumin, and HDL levels were also observed in Gymnema sylvestre treated hyperglycemic rats. Increased mRNA expression of Ins-1, Ins-2, Gck, Pdx1, Mafa, and Pax6 was observed, while decreased expression of Cat, Sod1, Nrf2, and NF-kB was observed in the pancreas. However, increased mRNA expression of Gck, Irs1, SREBP1c, and Foxk1 and decreased expression of Irs2, ChREBP, Foxo1, and FoxA2 were observed in the liver. The current study indicates the potent effect of Gymnema sylvestre on the transcription modulation of the insulin gene in the alloxan-induced hyperglycemic rat model. Enhanced plasma insulin levels further help to improve hyperglycemia-induced dyslipidemia through transcriptional modulation of hepatocytes.
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Affiliation(s)
- Humaira Muzaffar
- Department of Physiology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
| | - Iqra Qamar
- Department of Physiology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Bashir
- Department of Physiology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
| | - Farhat Jabeen
- Department of Zoology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
| | - Shahzad Irfan
- Department of Physiology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
| | - Haseeb Anwar
- Department of Physiology, Govt. College University Faisalabad, Faisalabad 38000, Pakistan
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Zamani M, Ashtary-Larky D, Nosratabadi S, Bagheri R, Wong A, Rafiei MM, Asiabar MM, Khalili P, Asbaghi O, Davoodi SH. The effects of Gymnema Sylvestre supplementation on lipid profile, glycemic control, blood pressure, and anthropometric indices in adults: A systematic review and meta-analysis. Phytother Res 2023; 37:949-964. [PMID: 36580574 DOI: 10.1002/ptr.7585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/07/2022] [Accepted: 07/05/2022] [Indexed: 12/30/2022]
Abstract
There is a growing interest in the considerable health benefits of Gymnema Sylvestre (GS) supplementation, as some studies have reported that it may improve cardiometabolic risk factors. However, the widespread impact of GS supplementation on the parameters mentioned above is not fully resolved. Consequently, this study aimed to examine the effects of GS supplementation on lipid profile, glycemic control, blood pressure, and anthropometric indices in adults. Eligible randomized controlled trials (RCT), published up to November 2021, were identified through PubMed, Scopus, and ISI Web of Science databases. Six studies were included and analyzed using a random-effects model to calculate weighted mean differences (WMDs) with 95% confidence intervals (CI). All studies were conducted in adults that used a GC supplement (>1 week) and assessed our selected cardiovascular risk factors. Outcomes revealed that GS supplementation significantly decreased triglyceride (p < .001), total cholesterol (p < .001), low-density lipoprotein (p < .001), fasting blood sugar (p < .001), and diastolic blood pressure (p = .003). Some limitations, including notable heterogeneity, low quality of studies, and lack of diversity among research participants, should be considered when interpreting our results. Our outcomes suggest that GS supplementation may improve cardiovascular risk factors. Future large-high-quality RCTs with longer duration and various populations are needed to firmly establish the clinical efficacy of the plant.
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Affiliation(s)
- Mohammad Zamani
- Department of Clinical Nutrition, School of Nutritional sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Damoon Ashtary-Larky
- Nutrition and Metabolic Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Saeed Nosratabadi
- Department of Nutrition, Electronic Health and Statistics Surveillance Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Reza Bagheri
- Department of Exercise Physiology, University of Isfahan, Isfahan, Iran
| | - Alexei Wong
- Department of Health and Human Performance, Marymount University, Arlington, USA
| | - Mohammad Mahdi Rafiei
- Centre de Recherche du Centre Hospitalier de l'Universit ́e de Montr ́eal (CRCHUM), Montréal, Canada.,School of Kinesiology and Physical Activity Sciences, Université de Montréal, Montréal, Canada
| | - Mojtaba Mahdavi Asiabar
- Department of Physical Education and Sport Science, Sanandaj Branch, Islamice Azad University, Sanandaj, Iran
| | - Pardis Khalili
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Omid Asbaghi
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sayed Hosein Davoodi
- Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Devangan S, Varghese B, Johny E, Gurram S, Adela R. The effect of Gymnema sylvestre supplementation on glycemic control in type 2 diabetes patients: A systematic review and meta-analysis. Phytother Res 2021; 35:6802-6812. [PMID: 34467577 DOI: 10.1002/ptr.7265] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 06/15/2021] [Accepted: 08/14/2021] [Indexed: 12/22/2022]
Abstract
This systematic review and meta-analysis aims to find the effect of Gymnema sylvestre (GS) supplementation on glycemic control in type-2 diabetes mellitus (T2DM). PubMed, Cochrane library, Google Scholar, and Science Direct were searched from inception to June 2020 to identify the studies that reported GS supplementation on glycemic parameters. Standardized mean difference (SMD) was calculated by comparing the post-intervention data with baseline data. SMDs with 95% confidence intervals (CIs) were pooled using a random-effects model. Our meta-analysis consisting of 10 studies with a total of 419 participants showed that GS supplementation significantly reduces fasting blood glucose (FBG) (SMD 1.57 mg/dl, 95% CI 2.22 to -0.93, p < .0001, I2 90%), postprandial blood glucose (PPBG) (SMD 1.04 mg/dl, 95% CI 1.53 to -0.54, p < .0001, I2 80%), and glycated haemoglobin (HbA1c) (SMD 3.91, 95% CI 7.35 to -0.16%, p < .0001, I2 99%) compared to baseline. Further, our study also found that GS significantly reduces triglycerides (SMD 1.81 mg/dl, 95% CI 2.95 to -0.66, p < .0001, I2 : 96%), and total cholesterol (SMD 4.10 mg/dl, 95% CI 7.21 to -0.99, p < .0001, I2 : 98%) compared to baseline. Our study shows that GS supplementation is effective in improving glycemic control and reducing lipid levels in T2DM patients and suggests that such supplementation might be used as an effective therapy for the management of T2DM and its associated complications to an extent.
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Affiliation(s)
- Suneel Devangan
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Guwahati, Guwahati, Assam, India.,Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Hajipur, Hajipur, Bihar, India
| | - Bincy Varghese
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Guwahati, Guwahati, Assam, India
| | - Ebin Johny
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Guwahati, Guwahati, Assam, India
| | - Surender Gurram
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Guwahati, Guwahati, Assam, India
| | - Ramu Adela
- Department of Pharmacy Practice, National Institute of Pharmaceutical Education and Research-Guwahati, Guwahati, Assam, India
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Gaytán Martínez LA, Sánchez-Ruiz LA, Zuñiga LY, González-Ortiz M, Martínez-Abundis E. Effect of Gymnema sylvestre Administration on Glycemic Control, Insulin Secretion, and Insulin Sensitivity in Patients with Impaired Glucose Tolerance. J Med Food 2020; 24:28-32. [PMID: 32460589 DOI: 10.1089/jmf.2020.0024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Gymnema sylvestre, a plant typical of India, has long been known for its hypoglycemic effects. The objective of this study was to evaluate the effect of G. sylvestre administration on glycemic control, insulin secretion, and insulin sensitivity in patients with impaired glucose tolerance (IGT). A randomized, double-blind, placebo-controlled clinical trial was conducted in 30 patients with IGT. Fifteen patients randomly received G. sylvestre in doses of 300 mg b.i.d. and the other 15 received placebo in the same way. Before and after the intervention, anthropometric and metabolic measurements were taken, including 2-h oral glucose tolerance test (2-h OGTT), fasting plasma glucose, glycated hemoglobin A1c (A1C), and the lipid profile panel. Areas under the curve of glucose and insulin were calculated, as well as the insulinogenic, Stumvoll, and Matsuda indices. Wilcoxon, Mann-Whitney U, and chi-square or Fisher's exact tests were performed, and a P-value ≤.05 was considered statistically significant. There was a significant reduction in 2-h OGTT (9.1 ± 1.2 vs. 7.8 ± 1.7 mmol/L, P = .003), A1C (5.8 ± 0.3% vs. 5.4 ± 0.4%, P = .025), body weight, body mass index, and low-density lipoprotein cholesterol levels in the G. sylvestre group, with an increment in the Matsuda index (1.8 ± 0.8 vs. 2.4 ± 1.2, P = .008). At the end of the intervention, 46.7% of the patients obtained normal values in A1C. In conclusion, G. sylvestre administration in patients with IGT decreased 2-h OGTT and A1C, increasing insulin sensitivity. There were also improvements in anthropometric measures and the lipid profile.
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Affiliation(s)
- Luis A Gaytán Martínez
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, Health Science University Center, University of Guadalajara, Guadalajara, Mexico
| | - Luis A Sánchez-Ruiz
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, Health Science University Center, University of Guadalajara, Guadalajara, Mexico
| | - Laura Y Zuñiga
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, Health Science University Center, University of Guadalajara, Guadalajara, Mexico
| | - Manuel González-Ortiz
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, Health Science University Center, University of Guadalajara, Guadalajara, Mexico
| | - Esperanza Martínez-Abundis
- Department of Physiology, Institute of Experimental and Clinical Therapeutics, Health Science University Center, University of Guadalajara, Guadalajara, Mexico
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Khan F, Sarker MMR, Ming LC, Mohamed IN, Zhao C, Sheikh BY, Tsong HF, Rashid MA. Comprehensive Review on Phytochemicals, Pharmacological and Clinical Potentials of Gymnema sylvestre. Front Pharmacol 2019; 10:1223. [PMID: 31736747 PMCID: PMC6830388 DOI: 10.3389/fphar.2019.01223] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/23/2019] [Indexed: 12/30/2022] Open
Abstract
Gymnema sylvestre is a plant included in Apocynaceae family and is located in many regions of Asia, Africa and Australia. This plant is widely used as a traditional therapy for different purposes. Even now it is being used as a dietary supplement due to its numerous therapeutic uses. It is known to have blood glucose lowering potential and, thus, is widely used in traditional and Ayurvedic systems of medicine. It renders glucose lowering activity due to the presence of phytochemicals, such as gurmarin, gymnemic acid as well as gymnemasaponins. Gymnema sylvestre is also known to have anti-oxidant, antibiotic, anti-inflammatory, antiviral, gastro and hepatoprotective, anticancer and lipid-lowering activities. This review discusses in details on different pharmacological and clinical potentials of Gymnema sylvestre and its chemical constituents associated with its therapeutic potentials.
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Affiliation(s)
- Farzana Khan
- Department of Pharmacy, State University of Bangladesh, Dhaka, Bangladesh
- Pharmacology and Toxicology Research Division, Health Med Science Research Ltd., Dhaka, Bangladesh
| | - Md. Moklesur Rahman Sarker
- Department of Pharmacy, State University of Bangladesh, Dhaka, Bangladesh
- Pharmacology and Toxicology Research Division, Health Med Science Research Ltd., Dhaka, Bangladesh
| | - Long Chiau Ming
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei
- Division of Pharmacy, School of Medicine, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Isa Naina Mohamed
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia (The National University of Malaysia), Cheras, Malaysia
| | - Chao Zhao
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bassem Y. Sheikh
- Faculty of Medicine, Taibah University, Almadinah Almunawwarah, Saudi Arabia
| | | | - Mohammad A. Rashid
- Phytochemical Research Laboratory, Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka, Bangladesh
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Kim HJ, Kim S, Lee AY, Jang Y, Davaadamdin O, Hong SH, Kim JS, Cho MH. The Effects of Gymnema sylvestre in High-Fat Diet-Induced Metabolic Disorders. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:813-832. [DOI: 10.1142/s0192415x17500434] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
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. It was found that GS significantly suppressed the increase of body weight, serum levels of lipid, insulin and leptin, and adipose tissue, and liver inflammation. GS also demonstrated hypoglycemic effects due to the amylase inhibition activity. Our results support the existence of a relationship between the HFD induced insulin resistance, adipose dysfunction and liver steatosis. In conclusion, GS works as a functional dietary supplement with preventative effects against metabolic disorder.
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Affiliation(s)
- Hyeon-Jeong Kim
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sanghwa Kim
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
- Graduate Group of Tumor Biology, Seoul National University, Daehangno 103-gil, Jongno-gu, Seoul 03080, Republic of Korea
| | - Ah Young Lee
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yoonjeong Jang
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Orkhonselenge Davaadamdin
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seong-Ho Hong
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
- New Drug Development Center, Daegu-Gyeongbuk, Medical Innovation Foundation, 88-gil, Dong-gu, Daegu 41061, Republic of Korea
| | - Jun Sung Kim
- R&D Center, Biterials Co., Ltd., Siksa-dong, Ilsandong-gu, Goyang-si, Gyeonggi-do 10326, Republic of Korea
| | - Myung-Haing Cho
- College of Veterinary Medicine, Seoul National University, Gwanak-ro 1-gil, Gwanak-gu, Seoul 08826, Republic of Korea
- Graduate Group of Tumor Biology, Seoul National University, Daehangno 103-gil, Jongno-gu, Seoul 03080, Republic of Korea
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Pothuraju R, Sharma RK, Rather SA, Singh S. Comparative evaluation of anti-obesity effect of Aloe vera and Gymnema sylvestre supplementation in high-fat diet fed C57BL/6J mice. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2016; 5:403-407. [PMID: 27757271 PMCID: PMC5061484 DOI: 10.5455/jice.20160623122710] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 06/13/2016] [Indexed: 01/25/2023]
Abstract
Background: The aim of the present study was to investigate, anti-obesity effect of Aloe vera (AV), and Gymnema sylvestre (GS) whole extract powders administration to high-fat diet (HFD) fed C57BL/6J mice for 12 weeks. Materials and Methods: At the end of experiment, different parameters such as body weight, feed intake, organ weights, fasting blood glucose, oral glucose tolerance test, plasma lipid levels, and expression analysis of adipocytokines were evaluated. Results: At the end of experimental period, oral administration of both herbs showed a significant (P < 0.05 and P < 0.001) decrease in the plasma glucose and lipid levels in HFD fed mice. In addition, increased in the epididymal fat (E. fat) weight in the HFD group was significantly (P < 0.05) reduced on GS administration alone. Finally, quantitative mRNA expression analysis of adiponectin gene was significantly up-regulated in AV supplementation. Further, no effect was observed with the both herbs on pro-inflammatory cytokines (interleukin 6 and tumor necrosis factor-a) in the E. fat tissue of HFD fed group. Conclusions: The anti-obesity and other metabolic studies depend on the type of diet, different parts of herbal extractions, and animal models used. Further studies are required in this area to strengthen the anti-obesity effects of herbs with active component, and it can be used a pro-drug instead of whole extract.
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Affiliation(s)
| | | | | | - Satvinder Singh
- Department of Animal Biochemistry, NDRI, Karnal, Haryana, India
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Kim HJ, Hong SH, Chang SH, Kim S, Lee AY, Jang Y, Davaadamdin O, Yu KN, Kim JE, Cho MH. Effects of feeding a diet containing Gymnema sylvestre extract: Attenuating progression of obesity in C57BL/6J mice. ASIAN PAC J TROP MED 2016; 9:437-44. [PMID: 27261851 DOI: 10.1016/j.apjtm.2016.03.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/16/2016] [Accepted: 03/15/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the effect of Gymnema sylvestre extract (GS) on initial anti-obesity, liver injury, and glucose homeostasis induced by a high-fat diet (HFD). METHODS The dry powder of GS was extracted with methanol, and gymnemic acid was identified by high performance liquid chromatography as deacyl gymnemic acid. Male C57BL/6J mice that fed on either a normal diet, normal diet containing 1 g/kg GS (CON+GS), HFD, or HFD containing 1.0 g/kg GS (HFD + GS) for 4 weeks were used to test the initial anti-obesity effect of GS. Body weight gain and food intake, and serum levels about lipid and liver injury markers were measured. Histopathology of adipose tissue and liver stained with hematoxylin and eosin (H&E) and oil-red O were analyzed. After 4 weeks of GS extract feeding, intraperitoneal glucose tolerance test (IPGTT) was performed. RESULTS The methanol extracts of GS exerted significant anti-obesity effects in HFD + GS group. They decreased body weight gain, a lower food and energy efficiency ratio, and showed lower serum levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL)-cholesterol, very-low density lipoprotein (VLDL)-cholesterol and leptin compared with the HFD group. The decreases of abdominal as well as epididymal fat weight and adipocyte hypertrophy, lipid droplets in liver, and serum levels of aspartate aminotransferase (AST) and alanine transaminase (ALT) were also observed. The CON + GS group showed an effect of glucose homeostasis compared to the CON group. CONCLUSIONS This study shows that GS provide the possibility as a key role in an initial anti-obesity effects feeding with a HFD.
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Affiliation(s)
- Hyeon-Jeong Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Seong-Ho Hong
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Hee Chang
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Sanghwa Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea; Graduate Group of Tumor Biology, Seoul National University, Seoul 03080, Republic of Korea
| | - Ah Young Lee
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoonjeong Jang
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Orkhonselenge Davaadamdin
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyeong-Nam Yu
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Ji-Eun Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
| | - Myung-Haing Cho
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea; Graduate Group of Tumor Biology, Seoul National University, Seoul 03080, Republic of Korea; Graduate School of Convergence Science and Technology, Seoul National University, Suwon 16229, Republic of Korea; Advanced Institutes of Convergence Technology, Seoul National University, Suwon 443-270, Republic of Korea; Institute of GreenBio Science Technology, Seoul National University, Pyeongchang-gun, Gangwon-do 25354, Republic of Korea.
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Pothuraju R, Sharma RK, Chagalamarri J, Kavadi PK, Jangra S. Influence of milk fermented with Lactobacillus rhamnosus NCDC 17 alone and in combination with herbal ingredients on diet induced adiposity and related gene expression in C57BL/6J mice. Food Funct 2015; 6:3576-84. [PMID: 26327356 DOI: 10.1039/c5fo00781j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Obesity has become a major health problem in developed countries and is rapidly catching up in the developing world due to changes in their life style. Dietary incorporation of functional foods, including probiotic fermented milk and herbal ingredients, is being tried to ameliorate metabolic disorders. In the present study, the effect of dietary supplementation of a probiotic (Lactobacillus rhamnosus NCDC 17) fermented milk alone or either of the herbal preparations (Aloe vera/Gymnema sylvestre powders, 1% w/w) on the progression of obesity has been studied in C57BL/6J mice fed with a high fat diet for 12 weeks. At the end of the experimental period, oral administration of L. rhamnosus and herbs resulted in a significant decrease in the body weight, epididymal fat mass, fasting blood glucose and serum insulin levels. Supplementation of the probiotic L. rhamnosus alone and in combination with herbs showed a significant decrease in the adipocyte cell size and an increase in the number. Finally, obesity related adipokines levels were maintained at normal by the treatment groups. Thus, dietary intervention of milk fermented with probiotic L. rhamnosus alone or in combination with any of the herbal preparations seems to show anti-obesity and anti-inflammatory properties.
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Affiliation(s)
- Ramesh Pothuraju
- Division of Animal Biochemistry, National Dairy Research Institute, Karnal-132001, Haryana, India.
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Renga B, Festa C, De Marino S, Di Micco S, D'Auria MV, Bifulco G, Fiorucci S, Zampella A. Molecular decodification of gymnemic acids from Gymnema sylvestre. Discovery of a new class of liver X receptor antagonists. Steroids 2015; 96:121-31. [PMID: 25668616 DOI: 10.1016/j.steroids.2015.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/19/2014] [Accepted: 01/29/2015] [Indexed: 12/19/2022]
Abstract
The individual chemical components of commercial extract of Gymnema sylvestre, a medicinal plant used in the traditional systems of the Indian medicine for its antidiabetic and hypolipidemic properties, were isolated and evaluated for their capability to act as modulators of nuclear and membrane receptors involved in glucose and lipid homeostasis. The study disclosed for the first time that individual gymnemic acids are potent and selective antagonists for the β isoform of LXR. Indeed the above activity was shared by the most abundant aglycone gymnemagenin (10) whereas gymnestrogenin (11) was endowed with a dual LXRα/β antagonistic profile. Deep pharmacological investigation demonstrated that gymnestrogenin, reducing the expression of SREBP1c and ABCA1 in vitro, is able to decrease lipid accumulation in HepG2 cells. The results of this study substantiate the use of G. sylvestre extract in LXR mediated dislypidemic diseases.
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Affiliation(s)
- Barbara Renga
- Department of Surgery and Biomedical Sciences, Nuova Facoltà di Medicina, P.zza L. Severi, 1-06132 Perugia, Italy
| | - Carmen Festa
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Simona De Marino
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Simone Di Micco
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (Salerno), Italy
| | - Maria Valeria D'Auria
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Giuseppe Bifulco
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (Salerno), Italy
| | - Stefano Fiorucci
- Department of Surgery and Biomedical Sciences, Nuova Facoltà di Medicina, P.zza L. Severi, 1-06132 Perugia, Italy
| | - Angela Zampella
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy.
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Karthick V, Kumar VG, Dhas TS, Singaravelu G, Sadiq AM, Govindaraju K. Effect of biologically synthesized gold nanoparticles on alloxan-induced diabetic rats-an in vivo approach. Colloids Surf B Biointerfaces 2014; 122:505-511. [PMID: 25092583 DOI: 10.1016/j.colsurfb.2014.07.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/09/2014] [Accepted: 07/14/2014] [Indexed: 12/23/2022]
Abstract
Development of novel antidiabetic agents using various organic compounds and biomolecules has been in practice for a long time. Recently, nanomaterials are also being used in antidiabetic studies for their unique properties such as small size, biocompatibility and ability to penetrate cell membrane for carrying drugs. Herein, in vivo antidiabetic activity of gold nanoparticles (AuNPs) synthesized using the antidiabetic potent plant Gymnema sylvestre R. Br on wistar albino rats has been evaluated. The formation of AuNPs and their morphology were confirmed using spectroscopic and microscopic analyses, respectively. The treatment of AuNPs has shown significant reduction in blood glucose level on diabetic rats. AuNPs were also tested for its anti-inflammatory effect by estimating the serum levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6) and high-sensitive C-reactive protein (CRP).
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Affiliation(s)
- V Karthick
- Nanoscience Division, Centre for Ocean Research, Sathyabama University, Chennai 600119, India
| | - V Ganesh Kumar
- Nanoscience Division, Centre for Ocean Research, Sathyabama University, Chennai 600119, India.
| | - T Stalin Dhas
- Nanoscience Division, Centre for Ocean Research, Sathyabama University, Chennai 600119, India
| | - G Singaravelu
- Nanoscience Division, Department of Zoology, Thiruvalluvar University, Vellore 632115, India
| | - A Mohamed Sadiq
- Department of Biochemistry, Adhiparasakthi College of Arts and Science, Kalavai 632506, India
| | - K Govindaraju
- Nanoscience Division, Centre for Ocean Research, Sathyabama University, Chennai 600119, India
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Woodgate DE, Conquer JA. Effects of a stimulant-free dietary supplement on body weight and fat loss in obese adults: a six-week exploratory study. Curr Ther Res Clin Exp 2014; 64:248-62. [PMID: 24944372 DOI: 10.1016/s0011-393x(03)00058-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2003] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Obesity is a well-established risk factor for cardiovascular disease, diabetes, hyperlipidemia, hypertension, osteoarthritis, and stroke. Stimulants, such as ephedrine and caffeine and their herbal counterparts, have proved effective in facilitating body weight loss, but their use is controversial due to their undesired effects. Other nutraceuticals have shown moderate success in reducing body weight, whereas several other compounds have demonstrated little or no effect. Therefore, a tolerable and effective nutraceutical that can increase energy expenditure and/or decrease caloric intake is desirable for body weight reduction. OBJECTIVE The primary purpose of this study was to assess the tolerability and effectiveness of a novel, stimulant-free, dietary supplement containing glucomannan, chitosan, fenugreek, Gymnema sylvestre, and vitamin C on body weight and fat loss and change in body composition in obese adults. METHODS In this single-center, prospective, randomized, double-blind, placebo-controlled study conducted at the University of Guelph (Guelph, Ontario, Canada), obese adults (aged 20-50 years; body mass index [BMI], ≥30 kg/m(2)) were randomized to the treatment or placebo group. The treatment group received 6 capsules of a dietary supplement containing a proprietary blend of glucomannan, chitosan, fenugreek, G sylvestre, and vitamin C daily for 6 weeks, and the placebo group received 6 capsules of rice flour daily for 6 weeks. Body weight; percentage of body fat; absolute fat mass; lean body mass; BMI; upper abdominal, waist, and hip circumference; and anthropometric measurements were recorded at baseline and at study end. Patients completed daily dietary intake records on days 1 to 3 and days 40 to 42. They also completed weekly activity logs throughout the study. RESULTS Twenty-four subjects (mean [SD] age, 37.0 [8.2] years [range, 21-48years]; mean [SD] BMI, 35.7 [6.2] kg/m(2) [range, 28.9-50.9 kg/m(2)]) were assigned to the treatment group (8 women, 4 men) or the placebo group (9 women,3 men). Two subjects (8.3%; 1 patient [8.3%] from each group) dropped out for personal reasons unrelated to the study. No significant changes in the consumption of total calories; the percentage of calories ingested as carbohydrates, fat, or protein; or activity levels were found in either group throughout the study. Compared with the placebo group, the treatment group lost significantly more body weight (-2.3 kg vs 0.0 kg; P<0.01), percentage of body fat (-1.1% vs 0.2%; P<0.05), and absolute fat mass (-2.0 kg vs 0.2 kg; P<0.001). The treatment group also experienced a significantly greater reduction in upper abdominal circumference (-4.5 cm vs -0.7 cm), waist circumference (-4.1 cm vs 0.1 cm), and hip circumference (-2.9 cm vs 0.6 cm) compared with the placebo group (P<0.05 for all). No significant changes in heart rate or blood pressure were found in either group. Both the treatment and the placebo were well tolerated. CONCLUSION Within the context of this study, the novel combination of glucomannan, chitosan, fenugreek, G sylvestre, and vitamin C results in significant body weight and fat loss in obese adults. Disclosure: Derek E. Woodgate, MSc, is president and owner of NxCare Inc., which produces the dietary supplement containing glucomannan, chitosan, fenugreek, Gymnema sylvestre, and vitamin C (trade name Calorie-Care™).
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Affiliation(s)
- Derek E Woodgate
- NxCare Inc., Guelph, Ontario, Canada, and the Departments of ; Human Biology and Nutritional Sciences and
| | - Julie A Conquer
- Human Nutraceutical Research Unit, University of Guelph, Guelph, Ontario, Canada
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Pothuraju R, Sharma RK, Chagalamarri J, Jangra S, Kumar Kavadi P. A systematic review of Gymnema sylvestre in obesity and diabetes management. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2014; 94:834-840. [PMID: 24166097 DOI: 10.1002/jsfa.6458] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/29/2013] [Accepted: 10/24/2013] [Indexed: 06/02/2023]
Abstract
The prevalence of obesity is associated with many health-related problems. Currently, more than 300 million people are considered to be obese. According to the World Health Organization (WHO), by 2030, 87 and 439 million people will be affected in India and the world, respectively. Today, herbal medicines are gaining interest in the treatment of obesity and diabetes, because of their minimal side effects. Gymnemic acid - an active component isolated from Gymnema sylvestre - has anti-obesity and antidiabetic properties, decreases body weight and also inhibits glucose absorption. Several components extracted from Gymnema prevent the accumulation of triglycerides in muscle and liver, and also decrease fatty acid accumulation in the circulation. In this paper, an attempt has been made to review the effects of various extracts from Gymnema sylvestre in the regulation of carbohydrate and lipid metabolism in both animal and clinical studies.
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Affiliation(s)
- Ramesh Pothuraju
- Division of Animal Biochemistry, National Dairy Research Institute, Karnal, -132001, (Haryana), India
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Inhibitory Effects of Gymnema (Gymnema sylvestre) Leaves on Tumour Promotion in Two-Stage Mouse Skin Carcinogenesis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:328684. [PMID: 24734106 PMCID: PMC3963214 DOI: 10.1155/2014/328684] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 01/27/2014] [Indexed: 12/04/2022]
Abstract
Ethanol extracts of gymnema (Gymnema sylvestre) leaves exhibited marked antitumour-promoting activity in an in vivo two-stage carcinogenesis test in mice using 7,12-dimethylbenz[a]anthracene as an initiator and 12-O-tetradecanoylphorbol-13-acetate (TPA) as a promoter. From the active fraction of the ethanol extract of the gymnema leaves, three triterpenoids were isolated and identified. These compounds were evaluated for their inhibitory effects on TPA-induced inflammation (1 µg/ear) in mice. The tested compounds showed marked anti-inflammatory effects, with a 50% inhibitory dose of 50–555 nmol/ear.
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Di Fabio G, Romanucci V, Zarrelli M, Giordano M, Zarrelli A. C-4 gem-dimethylated oleanes of Gymnema sylvestre and their pharmacological activities. Molecules 2013; 18:14892-919. [PMID: 24304585 PMCID: PMC6269971 DOI: 10.3390/molecules181214892] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Revised: 11/21/2013] [Accepted: 11/22/2013] [Indexed: 12/17/2022] Open
Abstract
Gymnema sylvestre R. Br., one of the most important medicinal plants of the Asclepiadaceae family, is a herb distributed throughout the World, predominantly in tropical countries. The plant, widely used for the treatment of diabetes and as a diuretic in Indian proprietary medicines, possesses beneficial digestive, anti-inflammatory, hypoglycemic and anti-helmentic effects. Furthermore, it is believed to be useful in the treatment of dyspepsia, constipation, jaundice, hemorrhoids, cardiopathy, asthma, bronchitis and leucoderma. A literature survey revealed that some other notable pharmacological activities of the plant such as anti-obesity, hypolipidemic, antimicrobial, free radical scavenging and anti-inflammatory properties have been proven too. This paper aims to summarize the chemical and pharmacological reports on a large group of C-4 gem-dimethylated pentacyclic triterpenoids from Gymnema sylvestre.
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Affiliation(s)
- Giovanni Di Fabio
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, Napoli 80126, Italy; E-Mails: (G.D.F.); (V.R.)
| | - Valeria Romanucci
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, Napoli 80126, Italy; E-Mails: (G.D.F.); (V.R.)
| | - Mauro Zarrelli
- IMCB-Institute of Composite and Biomedical Materials CNR–National Research Council P E Fermi, (Granatello) Portici, Napoli 80055, Italy; E-Mails: (M.Z.); (M.G.)
| | - Michele Giordano
- IMCB-Institute of Composite and Biomedical Materials CNR–National Research Council P E Fermi, (Granatello) Portici, Napoli 80055, Italy; E-Mails: (M.Z.); (M.G.)
| | - Armando Zarrelli
- Department of Chemical Sciences, University Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, Napoli 80126, Italy; E-Mails: (G.D.F.); (V.R.)
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Zarrelli A, DellaGreca M, Ladhari A, Haouala R, Previtera L. New Triterpenes fromGymnema sylvestre. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200331] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Subash AK, Augustine A. Hypolipidemic effect of methanol fraction of Aconitum heterophyllum wall ex Royle and the mechanism of action in diet-induced obese rats. J Adv Pharm Technol Res 2013; 3:224-8. [PMID: 23378943 PMCID: PMC3560128 DOI: 10.4103/2231-4040.104713] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aconitum heterophyllum is an endangered Himalayan plant included in “lekhaneyagana,” a pharmacological classification mentioned by Charaka in “Charakasamhita” which means reduce excess fat. The subterranean part of the plant is used for the treatment of diseases like nervous system disorders, fever, diarrhea, obesity, etc. In the present study, we are reporting the hypolipidemic effect of methanol fraction of A. heterophyllum. The methanol extract of A. heterophyllum was orally administered in diet-induced obese rats. After four weeks treatment, blood samples were collected for the estimation of serum lipids and lecithin-cholesterol acyltransferase (LCAT). Liver was collected for the assay of HMG-CoA reductase (HMGR). The fecal samples were also collected to estimate the fecal fat content. The A. heterophyllum treatment markedly lowered total cholesterol, triglycerides and apolipoprotein B concentrations in blood serum. It also showed positive effects (increase) on serum high-density lipoprotein cholesterol (HDL-c) and apolipoprotein A1 concentrations. On the other hand, A. heterophyllum treatment lowered HMGR activity, which helps to reduce endogenous cholesterol synthesis and also activated LCAT, helping increase in HDL-c. An increase in fecal fat content is also an indication of the hypolipidemic effect of A. heterophyllum. The significant hypolipidemic effect of A. heterophyllum may be linked to its ability to inhibit HMGR activity and block intestinal fat absorption. The increase in HDL-c may be linked to its ability to activate LCAT enzyme.
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Al-Rejaie SS, Abuohashish HM, Ahmed MM, Aleisa AM, Alkhamees O. Possible biochemical effects following inhibition of ethanol-induced gastric mucosa damage by Gymnema sylvestre in male Wistar albino rats. PHARMACEUTICAL BIOLOGY 2012; 50:1542-1550. [PMID: 22978267 DOI: 10.3109/13880209.2012.694894] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
CONTEXT Gymnema sylvestre (GS) R. Br. (Gymnema) (Asclepiadaceae) has been used from ancient times as a folk medicine for the treatment of diabetes, obesity, urinary disorder, and stomach stimulation. OBJECTIVE The present study was designed to investigate the effects of G. sylvestre leaves ethanol extract on gastric mucosal injury in rats. MATERIALS AND METHODS Gastric mucosal damage was induced by 80% ethanol in 36 h fasted rats. The effect of G. sylvestre on gastric secretions induced in Shay rats was estimated. In stomach, wall mucus, non-protein sulfhydryl groups (NP-SH), malondialdehyde (MDA), total proteins and nucleic acids levels were estimated. Histopathological changes were observed. RESULTS G. sylvestre pretreatment at doses of 100, 200 and 400 mg/kg provided 27, 49, and 63% protection against the ulcerogenic effect of ethanol, respectively. Pylorus ligation accumulated 10.24 mL gastric secretions with 66.56 mEq of acidity in control rats. Pretreatment with G. sylvestre significantly inhibited the secretions volume and acidity in dose-dependent manner. Ethanol caused significant depletion in stomach-wall mucus (p < 0.001), total proteins (p < 0.01), nucleic acids (p < 0.001), and NP-SH (p < 0.001) levels. Pretreatment with G. sylvestre showed protection against these depleted levels in dose-dependent manner. The MDA levels increased from 19.02 to 29.22 nmol/g by ethanol ingestion and decreased with G. sylvestre pretreatments in dose-dependent manner. CONCLUSION The protective effect of G. sylvestre observed in the present study is attributed to its effect on mucus production, increase in nucleic acid and NP-SH levels, which appears to be mediated through its free radical scavenging ability and/or possible cytoprotective properties.
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Affiliation(s)
- Salim S Al-Rejaie
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. Box 55760, Riyadh 11544, Saudi Arabia.
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Kumar SN, Mani UV, Mani I. An open label study on the supplementation of Gymnema sylvestre in type 2 diabetics. J Diet Suppl 2012; 7:273-82. [PMID: 22432517 DOI: 10.3109/19390211.2010.505901] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Diabetes mellitus is a complex metabolic disorder characterized by chronic hyperglycemia, and associated with long-term damage and dysfunction of various organs. Management of diabetes is therefore vital and involves maintaining euglycemia as much as possible by reducing blood glucose and by increasing insulin sensitivity and peripheral glucose uptake. Ayurveda has promoted the management of diabetes by regulating carbohydrate metabolism using several medicinal herbs, one of which is Gymnema sylvestre (GS). GS has been used in parts of India as a hypoglycemic agent and the results have been encouraging. Accordingly, we planned a quasi-experimental study to investigate the efficacy of the herb among type 2 diabetics. Patients enrolled from free-living population were purposively assigned to experimental or control groups, based on their willingness to participate in the study. The experimental group was supplemented with 500 mg of the herb per day for a period of 3 months, and the efficacy of the herb was assessed through a battery of clinical and biochemical tests. Supplementation of the diet with GS reduced polyphagia, fatigue, blood glucose (fasting and post-prandial), and glycated hemoglobin and there was a favorable shift in lipid profiles and in other clinico-biochemical tests. These findings suggest a beneficial effect of GS in the management of diabetes mellitus.
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Affiliation(s)
- Smriti Nanda Kumar
- Department of Foods and Nutrition, WHO Collaborating Centre for Research & Training in Promoting Nutrition in Health & Development, The M S University of Baroda, Vadodara, Gujarat 390 020, India. smitz
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Bharathi P, Reddy AG, Reddy AR, Alpharaj M. A Study of Certain Herbs Against Chlorpyrifos-induced Changes in Lipid and Protein Profile in Poultry. Toxicol Int 2011; 18:44-6. [PMID: 21430920 PMCID: PMC3052583 DOI: 10.4103/0971-6580.75854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A total of 225 male broiler chicks (Cobb strain) of day-old age were procured for the study. The chicks were randomly divided into 15 groups consisting of 15 chicks in each group. Group 1 was maintained as basal diet control and group 2 on chlorpyrifos (CPS) at 100 ppm in feed throughout 6 wk as iron toxic control without any treatment. Groups 3-15 were maintained on CPS at 100 ppm in feed for the 4 wk (28 days) of study and thereafter administered with different herbs and their combinations for remaining 2 wk. The blood samples were drawn from wing vein on 28th day and 42nd day from the birds in each group for the estimation of lipid and protein profiles. The birds were sacrificed at the end of 6th week and liver tissues were collected for histological examination. The concentrations of total cholesterol, low density lipoprotein (LDL) cholesterol, triglycerides, total protein, albumin and globulins and the A/G ratio were increased significantly (P<;0.05) in toxic groups (2–15), while high density lipoprotein (HDL) cholesterol was significantly (P<;0.05) decreased at the end of 4th week. However, following supplementation of herbs and herbal combinations, the values of lipid and protein profile in groups 3–15 revived toward normal at the end of 6th week. Histopathology of liver in CPS toxic control (group 2) revealed areas of degeneration, while groups 3–15 that were treated with herbs and their combinations exhibited these changes in a milder form, indicating regenerative alterations. The study revealed that chorpyrifos-induced changes in lipid and protein profile were improved by supplementation of certain herbs.
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Affiliation(s)
- P Bharathi
- Department of Pharmacology and Toxicology, College of Veterinary Science, Hyderabad - 30, India
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Vermaak I, Viljoen AM, Hamman JH. Natural products in anti-obesity therapy. Nat Prod Rep 2011; 28:1493-533. [DOI: 10.1039/c1np00035g] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Kreider RB, Wilborn CD, Taylor L, Campbell B, Almada AL, Collins R, Cooke M, Earnest CP, Greenwood M, Kalman DS, Kerksick CM, Kleiner SM, Leutholtz B, Lopez H, Lowery LM, Mendel R, Smith A, Spano M, Wildman R, Willoughby DS, Ziegenfuss TN, Antonio J. ISSN exercise & sport nutrition review: research & recommendations. J Int Soc Sports Nutr 2010. [PMCID: PMC2853497 DOI: 10.1186/1550-2783-7-7] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Sports nutrition is a constantly evolving field with hundreds of research papers published annually. For this reason, keeping up to date with the literature is often difficult. This paper is a five year update of the sports nutrition review article published as the lead paper to launch the JISSN in 2004 and presents a well-referenced overview of the current state of the science related to how to optimize training and athletic performance through nutrition. More specifically, this paper provides an overview of: 1.) The definitional category of ergogenic aids and dietary supplements; 2.) How dietary supplements are legally regulated; 3.) How to evaluate the scientific merit of nutritional supplements; 4.) General nutritional strategies to optimize performance and enhance recovery; and, 5.) An overview of our current understanding of the ergogenic value of nutrition and dietary supplementation in regards to weight gain, weight loss, and performance enhancement. Our hope is that ISSN members and individuals interested in sports nutrition find this review useful in their daily practice and consultation with their clients.
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Ray SD, Parmar M, Syed I, Rathod J, Zinkovsky D, Bulku E, Gigliotti J, Hackman RM, Stohs SJ. Long term exposure effect of a unique metabolic nutrition system containing a diverse group of phytochemicals on serum chemistry and genomic and non-genomic changes in the liver of female B6C3F1 mice. Phytother Res 2008; 22:458-71. [DOI: 10.1002/ptr.2337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Pari L, Latha M. Antihyperlipidemic Effect ofScoparia dulcis(Sweet Broomweed) in Streptozotocin Diabetic Rats. J Med Food 2006; 9:102-7. [PMID: 16579736 DOI: 10.1089/jmf.2006.9.102] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We have investigated Scoparia dulcis, an indigenous plant used in Ayurvedic medicine in India, for its possible antihyperlipidemic effect in rats with streptozotocin-induced experimental diabetes. Oral administration of an aqueous extract of S. dulcis plant (200 mg/kg of body weight) to streptozotocin diabetic rats for 6 weeks resulted in a significant reduction in blood glucose, serum and tissue cholesterol, triglycerides, free fatty acids, phospholipids, 3-hydroxy-3-methylglutaryl (HMG)-CoA reductase activity, and very low-density lipoprotein and low-density lipoprotein cholesterol levels. The decreased serum high-density lipoprotein cholesterol, anti-atherogenic index, and HMG-CoA reductase activity in diabetic rats were also reversed towards normalization after the treatment. Similarly, the administration of S. dulcis plant extract (SPEt) to normal animals resulted in a hypolipidemic effect. The effect was compared with glibenclamide (600 microg/kg of body weight). The results showed that SPEt had antihyperlipidemic action in normal and experimental diabetic rats in addition to its antidiabetic effect.
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Affiliation(s)
- Leelavinothan Pari
- Department of Biochemistry, Faculty of Science, Annamalai University, Annamalainagar, Tamil Nadu, India.
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Wilborn C, Beckham J, Campbell B, Harvey T, Galbreath M, La Bounty P, Nassar E, Wismann J, Kreider R. Obesity: prevalence, theories, medical consequences, management, and research directions. J Int Soc Sports Nutr 2005; 2:4-31. [PMID: 18500955 PMCID: PMC2129146 DOI: 10.1186/1550-2783-2-2-4] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2005] [Accepted: 09/28/2005] [Indexed: 11/29/2022] Open
Abstract
Obesity and its associated disorders are a growing epidemic across the world. Many genetic, physiological, and behavioral factors play a role in the etiology of obesity. Diet and exercise are known to play a valuable role in the treatment and prevention of obesity and associated disorders such as hypertension, heart disease, and diabetes. Therefore, the purpose of this review is to examine the prevalence, etiology, consequences, and treatment of obesity.
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Affiliation(s)
- Colin Wilborn
- Exercise and Sport Nutrition Laboratory, Baylor University, Waco, TX.
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Ogawa Y, Sekita K, Umemura T, Saito M, Ono A, Kawasaki Y, Uchida O, Matsushima Y, Inoue T, Kanno J. [Gymnema sylvestre leaf extract: a 52-week dietary toxicity study in Wistar rats]. Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2004; 45:8-18. [PMID: 15168555 DOI: 10.3358/shokueishi.45.8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A 52-week study of oral-repeated-dose toxicity for the extraction powder of Gymnema sylvestre (GS), Indian-native genus, Metaplexis japonica, was conducted in both genders of Wistar rats. The rats were administered a graded dose of GS at 0.01, 0.10 and 1.00% of basal powder diet, along with a group fed solely with the basal powder diet without GS, for 52 weeks. General conditions were recorded daily. Body weights and food consumptions were recorded weekly up to 12 weeks, and thereafter at longer intervals. At 26 weeks, for an intermediate examination, and 52 weeks, for the final examination, animals were subjected to hematology, serum chemistry, and pathological examination. None of the animals died in the period up to 52 weeks. No exposure-related changes in body-weight, in the food consumption, in the hematological examinations, or in the serum biochemical examinations were recognized. No histopathological alterations were seen. Thus, it was concluded that there was no toxic effect in rats treated with GS at up to 1.00% in the diet for 52 weeks. The no-observable-effect level from this study is 1.00% GS, i.e., 504 mg/kg/day for male and 563 mg/kg/day for female as mean daily intake, for 52 weeks.
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Affiliation(s)
- Yukio Ogawa
- Center for Biological Safety and Research, National Institute of Health Sciences: 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
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Kreider RB, Almada AL, Antonio J, Broeder C, Earnest C, Greenwood M, Incledon T, Kalman DS, Kleiner SM, Leutholtz B, Lowery LM, Mendel R, Stout JR, Willoughby DS, Ziegenfuss TN. ISSN Exercise & Sport Nutrition Review: Research & Recommendations. J Int Soc Sports Nutr 2004. [PMCID: PMC2129137 DOI: 10.1186/1550-2783-1-1-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Sport nutrition is a constantly evolving field with literally thousands of research papers published annually. For this reason, keeping up to date with the literature is often difficult. This paper presents a well-referenced overview of the current state of the science related to how to optimize training through nutrition. More specifically, this article discusses: 1.) how to evaluate the scientific merit of nutritional supplements; 2.) general nutritional strategies to optimize performance and enhance recovery; and, 3.) our current understanding of the available science behind weight gain, weight loss, and performance enhancement supplements. Our hope is that ISSN members find this review useful in their daily practice and consultation with their clients.
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Abstract
OBJECTIVE The aim of this work was to find obesity control method without rebound. In our previous studies, gymnemate extracted from Gymnema sylvestre, inhibited oleic acid absorption. The Otsuka Long-Evans Tokushima Fatty (OLETF) rat, a genetic multifactor syndrome model, exhibits progressive overweight, hyperlipidemia and hyperglycemia. The effect of gymnemate on obesity in OLETF was investigated. METHODS Three groups were divided (n=4-8): (1) OLETF-gymnemate, gymnema water extract (containing gymnemate) diet (62.5 g/kg) and water (2.5 g/kg) were supplied 2 weeks from 26-28 weeks, following it general diet and water were fed 3 weeks to observe if it rebound, (2) OLETF-control and (3) the counterpart Long-Evans Tokushima Otsuka rats as normal-control. RESULTS With gymnemate treatment, the food and water intake were decreased about 1/3 and 2/3, along with body weight reduced 57.2+/- 6.4 and 75.5+/- 6.3 g during 1 and 2 weeks respectively. In the end of experiment (3 weeks after gymnemate withdrawal), the body weight was decreased to no significant difference with normal-control. The total cholesterol was decreased about 1/3, moreover LDL+VLDL (low-density and very-low-density lipoprotein) cholesterol decreased about 1/2. The proportion of HDL (high-density lipoprotein) cholesterol to the total cholesterol was increased. The serum triglyceride was decreased to the 1/4 of OLETF control. The level of serum cholesterol and triglyceride was no significant difference in gymnemate group with normal group. CONCLUSION Supplementation with gymnemate promoted weight loss by its ability to reduce hyperlipidemia, which was no withdrawal rebound: an important discovery. Supplementation with gymnemate is a novel therapeutic tool for weight management, especially in multifactor syndrome.
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Affiliation(s)
- Hong Luo
- Department of Pathophysiological and Therapeutic Science, Division of Medical Biochemistry, Faculty of Medicine, Tottori University, Yonago, 683-8503, Japan.
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