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Zhang L, Peng CY, Wang PX, Xu L, Liu JH, Xie X, Lu L, Tu ZC. Hypoglycemic and H 2O 2-induced oxidative injury protective effects and the phytochemical profiles of the ethyl acetate fraction from Radix Paeoniae Alba. Front Nutr 2023; 10:1126359. [PMID: 36908916 PMCID: PMC9998525 DOI: 10.3389/fnut.2023.1126359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 01/31/2023] [Indexed: 03/14/2023] Open
Abstract
Radix Paeonia Alba (RPA) is often used as food and medicine. This study aimed to enrich and identify the antioxidant and hypoglycemic bioactive compounds from RPA. The results indicated that the ethyl acetate fraction (EAF) showed the highest total phenolic content, DPPH, ABTS+ scavenging ability, and α-glucosidase inhibition ability (IC50 = 7.27 μg/ml). The EAF could alleviate H2O2-induced oxidative stress in HepG2 cells by decreasing the MDA and ROS levels, improving cell apoptosis, increasing the enzyme activity of GPX-Px, CAT, SOD, Na+/K+-ATP, and Ca2+/Mg2+-ATP, and stimulating T-AOC expression, which also enhanced the glucose uptake of insulin-resistant HepG2 cells. In addition, the EAF significantly reduced the fasting blood glucose level and improved glucose tolerance in diabetic mice. An HPLC-QTOF-MS/MS analysis displayed that procyanidin, digallic acid isomer, methyl gallate, tetragalloylglucose isomer, dimethyl gallic acid, and paeoniflorin were the major compounds in the EAF. These findings are meaningful for the application of the EAF in the medicinal or food industry to prevent and treat oxidative stress and diabetes mellitus.
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Affiliation(s)
- Lu Zhang
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China.,Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, Jiangxi, China
| | - Chun-Yan Peng
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Pei-Xin Wang
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Linju Xu
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Jia-Hui Liu
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Xing Xie
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Ling Lu
- Jiangxi Deshang Pharmaceutical Co., Ltd., Yichun, Jiangxi, China
| | - Zong-Cai Tu
- National R&D Center of Freshwater Fish Processing, College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China.,State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, China
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2
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Santos AL, Sinha S. Ageing, Metabolic Dysfunction, and the Therapeutic Role of Antioxidants. Subcell Biochem 2023; 103:341-435. [PMID: 37120475 DOI: 10.1007/978-3-031-26576-1_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The gradual ageing of the world population has been accompanied by a dramatic increase in the prevalence of obesity and metabolic diseases, especially type 2 diabetes. The adipose tissue dysfunction associated with ageing and obesity shares many common physiological features, including increased oxidative stress and inflammation. Understanding the mechanisms responsible for adipose tissue dysfunction in obesity may help elucidate the processes that contribute to the metabolic disturbances that occur with ageing. This, in turn, may help identify therapeutic targets for the treatment of obesity and age-related metabolic disorders. Because oxidative stress plays a critical role in these pathological processes, antioxidant dietary interventions could be of therapeutic value for the prevention and/or treatment of age-related diseases and obesity and their complications. In this chapter, we review the molecular and cellular mechanisms by which obesity predisposes individuals to accelerated ageing. Additionally, we critically review the potential of antioxidant dietary interventions to counteract obesity and ageing.
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Affiliation(s)
- Ana L Santos
- IdISBA - Fundación de Investigación Sanitaria de las Islas Baleares, Palma, Spain.
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3
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Wan C, Ouyang J, Li M, Rengasamy KRR, Liu Z. Effects of green tea polyphenol extract and epigallocatechin-3-O-gallate on diabetes mellitus and diabetic complications: Recent advances. Crit Rev Food Sci Nutr 2022; 64:5719-5747. [PMID: 36533409 DOI: 10.1080/10408398.2022.2157372] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diabetes mellitus is one of the major non-communicable diseases accounting for millions of death annually and increasing economic burden. Hyperglycemic condition in diabetes creates oxidative stress that plays a pivotal role in developing diabetes complications affecting multiple organs such as the heart, liver, kidney, retina, and brain. Green tea from the plant Camellia sinensis is a common beverage popular in many countries for its health benefits. Green tea extract (GTE) is rich in many biologically active compounds, e.g., epigallocatechin-3-O-gallate (EGCG), which acts as a potent antioxidant. Recently, several lines of evidence have shown the promising results of GTE and EGCG for diabetes management. Here, we have critically reviewed the effects of GTE and EGCC on diabetes in animal models and clinical studies. The concerns and challenges regarding the clinical use of GTE and EGCG against diabetes are also briefly discussed. Numerous beneficial effects of green tea and its catechins, particularly EGCG, make this natural product an attractive pharmacological agent that can be further developed to treat diabetes and its complications.
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Affiliation(s)
- Chunpeng Wan
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Jian Ouyang
- Key Laboratory of Tea Science of Ministry of Education, National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, College of Horticulture, Hunan Agricultural University, Changsha, Hunan, China
| | - Mingxi Li
- Research Center of Tea and Tea Culture, College of Agronomy, Jiangxi Agricultural University, Nanchang, Jiangxi, China
| | - Kannan R R Rengasamy
- Laboratory of Natural Products and Medicinal Chemistry (LNPMC), Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, India
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, College of Horticulture, Hunan Agricultural University, Changsha, Hunan, China
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4
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Verma P, Joshi BC, Bairy PS. A Comprehensive Review on Anti-obesity Potential of Medicinal Plants and their Bioactive Compounds. CURRENT TRADITIONAL MEDICINE 2022. [DOI: 10.2174/2215083808666220211162540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Obesity is a complex health and global epidemic issue. It is an increasing global health challenge covering significant social and economic costs. Abnormal accumulation of fat in the body may increase the health risks including diabetes, hypertension, osteoarthritis, sleep apnea, cardiovascular diseases, stroke and cancer. Synthetic drugs available on the market reported to have several side effects. Therefore, the management of obesity got to involve the traditional use of medicinal plants which helps to search the new therapeutic targets and supports the research and development of anti-obesity drugs.
Objective:
This review aim to update the data and provide a comprehensive report of currently available knowledge of medicinal plants and phyto-chemical constituents reported for their anti-obesity activity.
Methodology:
An electronic search of the periodical databases like Web of Science, Scopus, PubMed, Scielo, Niscair, ScienceDirect, Springerlink, Wiley, SciFinder and Google Scholar with information reported the period 1991-2019, was used to retrieve published data.
Results:
A comprehensive report of the present review manuscript is an attempt to list the medicinal plants with anti-obesity activity. The review focused on plant extracts, isolated chemical compounds with their mechanism of action and their preclinical experimental model, clinical studies for further scientific research.
Conclusion:
This review is the compilation of the medicinal plants and their constituents reported for the managements of obesity. The data will fascinate the researcher to initiate further research that may lead to the drug for the management of obesity and their associated secondary complications. Several herbal plants and their respective lead constituents were also screened by preclinical In-vitro and In-vivo, clinical trials and are effective in the treatment of obesity. Therefore, there is a need to develop and screen large number of plant extracts and this approach can surely be a driving force for the discovery of anti-obesity drugs from medicinal plants.
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Affiliation(s)
- Piyush Verma
- School of Pharmaceutical Sciences and Technology, Sardar Bhagwan Singh University, Balawala, Dehradun-248001, Uttarakhand (India)
| | - Bhuwan Chandra Joshi
- Department of Pharmaceutical Sciences, Faculty of Technology, Kumaun University, Bhimtal Campus, Nainital-263136, Uttarakhand (India)
| | - Partha Sarathi Bairy
- School of Pharmacy, Graphic Era Hill University, Clement Town, Dehradun-248001, Uttarakhand (India)
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The Effects of Green Tea on Diabetes and Gut Microbiome in db/ db Mice: Studies with Tea Extracts vs. Tea Powder. Nutrients 2021; 13:nu13093155. [PMID: 34579032 PMCID: PMC8467950 DOI: 10.3390/nu13093155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/30/2021] [Accepted: 09/06/2021] [Indexed: 12/12/2022] Open
Abstract
Green tea extracts and tea catechins have been shown to prevent or alleviate diabetes. The present study tests the hypothesis that green tea leaves in powder form (GTP), which also contain fiber and other water non-extractable materials, are more effective than the corresponding green tea extracts (GTE) in impeding the development of diabetes in db/db mice. Female db/db mice were treated with a diet containing 1% of GTE, 2% of GTE, 2% of GTP (with the same catechin content as 1% GTE) or 1% GTP. The 1% GTE group had lower food intake, water consumption, body weight and fasting blood glucose levels than the control group, while 2% GTP did not have any significant effect. Dietary 1% GTE also preserved β-cell insulin secretion. However, 1% GTP increased food intake, water consumption and blood glucose levels. Microbiome analysis with 16S rRNA gene V4 sequencing showed that the gut microbiota was modified by GTE and GTP, and a few bacterial guilds were associated with blood glucose levels. In the Random Forest regression model, the leading predictor of metabolic outcome was food consumption, followed by changes in some bacterial guilds. The results illustrate the importance of food consumption and gut microbiota in affecting the progression of diabetes.
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Mechchate H, Es-Safi I, Haddad H, Bekkari H, Grafov A, Bousta D. Combination of Catechin, Epicatechin, and Rutin: Optimization of a novel complete antidiabetic formulation using a mixture design approach. J Nutr Biochem 2020; 88:108520. [PMID: 33017607 DOI: 10.1016/j.jnutbio.2020.108520] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/27/2020] [Accepted: 09/11/2020] [Indexed: 12/28/2022]
Abstract
Nowadays, synthetic chemical antidiabetic drugs, besides their therapeutic effects, present adverse effects that could be hard to handle over time. In the last decade, studies reported new alternative molecules with more health benefits and less adverse effects. The goal of this study is to optimize a new antidiabetic formulation using plant flavonoids: Catechin, Epicatechin, and Rutin. They are also a powerful antioxidant and anti-inflammatory molecules. A mixture design experiment will optimize their combination to obtain a new, safe multi-targets antidiabetic formulation making it a powerful combination for the management of diabetes and its complications. To study the variation of blood glucose level in response to the treatment over the time we performed an Oral Glucose Tolerance Test. The blood glucose level variations recorded as responses for the mixture design experiment. We used the molecules at a dose of 10 mg/kg. According to the software analysis, the prediction profiler showed us the optimum combination, and the result was a binary combination between Rutin and Epicatechin (25% and 75%, respectively). This combination prevented hyperglycemia and hypoglycemia, along with the best area under the curve, and after that, we validated it through a repeated oral administration on alloxan-induced diabetic mice for 28 d. Rutin, Catechin, and Epicatechin exhibit a potent antihyperglycemic activity, their synergistic combination validates a new formulation that could be a real candidate to conventional drugs.
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Affiliation(s)
- Hamza Mechchate
- Laboratory of Biotechnology, Environment, Agrifood, and Health, University of Sidi Mohamed Ben Abdellah, FSDM-Fez, Morocco.
| | - Imane Es-Safi
- Laboratory of Biotechnology, Environment, Agrifood, and Health, University of Sidi Mohamed Ben Abdellah, FSDM-Fez, Morocco.
| | - Hassan Haddad
- Department of chemistry, University of Helsinki, Helsinki, Finland.
| | - Hicham Bekkari
- Laboratory of Biotechnology, Environment, Agrifood, and Health, University of Sidi Mohamed Ben Abdellah, FSDM-Fez, Morocco.
| | - Andriy Grafov
- Department of chemistry, University of Helsinki, Helsinki, Finland.
| | - Dalila Bousta
- Laboratory of Biotechnology, Environment, Agrifood, and Health, University of Sidi Mohamed Ben Abdellah, FSDM-Fez, Morocco.
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Hu Q, Chen H, Zuo Y, He Q, He X, Simpson S, Huang W, Yang H, Zhang H, Lin R. Role of PCK1 gene on oil tea-induced glucose homeostasis and type 2 diabetes: an animal experiment and a case-control study. Nutr Metab (Lond) 2019; 16:12. [PMID: 30805021 PMCID: PMC6373102 DOI: 10.1186/s12986-019-0337-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/24/2019] [Indexed: 12/18/2022] Open
Abstract
Background Oil tea is a type of traditional tea beverage used for treating various ailments in minority population in Guangxi, China. Our previous study showed oil tea improved glucose and lipid levels in type 2 diabetic mice. Yet, the underling molecular mechanisms are still not understood. This study aimed at assessing the effect of oil tea on glucose homeostasis and elucidating the molecular mechanisms underlying the oil tea-induced antidiabetic effects. Methods Twenty seven db/db mice were gavaged with saline, metformin and oil tea for 8 weeks with measurement of biochemical profiles. A real-time2 (RT2) profiler polymerase chain reaction (PCR) array comprising 84 genes involved in glucose metabolism was measured and validated by quantitative PCR (qPCR). The association between the candidate genes and type 2 diabetes were further analyzed in a case-control study in the Chinese minority population. Results Oil tea treatment facilitated glucose homeostasis by decreasing fasting blood glucose and total cholesterol, and improving glucose tolerance. Suppressing phosphoenolpyruvate carboxykinase 1 (PCK1) expression was observed in the oil tea treatment group and the expression was significantly correlated with fasting blood glucose levels. Target prediction and functional annotation by WEB-based GEne SeT AnaLysis Toolkit (WebGestalt) revealed that PCK1 mainly involved in the glycolysis/gluconeogenesis pathway among the top Kyoto Encyclopedia of Genes and Genomes (KEGG) database pathways. Both rs707555 and rs2071023 in PCK1 were significantly associated with type 2 diabetes in the minority population of Guangxi. Conclusion Our findings indicated oil tea improved glucose homeostasis via down-regulation of PCK1 and PCK1 may be a genetic marker for the treatment of type 2 diabetes.
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Affiliation(s)
- Qiantu Hu
- 1Center for Genomic and Personalized Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021 Guangxi China
| | - Huafeng Chen
- 2Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Yanli Zuo
- 3General Practice School, Guangxi Medical University, Nanning, China
| | - Qin He
- 2Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Xuan He
- 2Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Steve Simpson
- 4Melbourne School of Population & Global Health, University of Melbourne, Carlton, Australia.,5Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - Wei Huang
- 2Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Hui Yang
- 2Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Haiying Zhang
- 1Center for Genomic and Personalized Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021 Guangxi China.,6Public Health School, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021 Guangxi China
| | - Rui Lin
- 1Center for Genomic and Personalized Medicine, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021 Guangxi China.,2Guangxi Center for Disease Prevention and Control, Nanning, China.,6Public Health School, Guangxi Medical University, 22 Shuangyong Road, Nanning, 530021 Guangxi China
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8
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Chen T, Liu AB, Sun S, Ajami NJ, Ross MC, Wang H, Zhang L, Reuhl K, Kobayashi K, Onishi JC, Zhao L, Yang CS. Green Tea Polyphenols Modify the Gut Microbiome in db/db Mice as Co-Abundance Groups Correlating with the Blood Glucose Lowering Effect. Mol Nutr Food Res 2019; 63:e1801064. [PMID: 30667580 DOI: 10.1002/mnfr.201801064] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/07/2019] [Indexed: 01/04/2023]
Abstract
SCOPE The effects of green tea polyphenols, Polyphenon E (PPE), and black tea polyphenols, theaflavins (TFs), on gut microbiota and development of diabetes in db/db mice are investigated and compared. METHODS AND RESULTS Supplementation of PPE (0.1%) in the diet of female db/db mice for 7 weeks decreases fasting blood glucose levels and mesenteric fat while increasing the serum level of insulin, possibly through protection against β-cell damage. However, TFs are less or not effective. Microbiome analysis through 16S rRNA gene sequencing shows that PPE and TFs treatments significantly alter the bacterial community structure in the cecum and colon, but not in the ileum. The key bacterial phylotypes responding to the treatments are then clustered into 11 co-abundance groups (CAGs). CAGs 6 and 7, significantly increased by PPE but not by TFs, are negatively associated with blood glucose levels. The operational taxonomic units in these CAGs are from two different phyla, Firmicutes and Bacteroidetes. CAG 10, decreased by PPE and TFs, is positively associated with blood glucose levels. CONCLUSION Gut microbiota respond to tea polyphenol treatments as CAGs instead of taxa. Some of the CAGs associated with the blood glucose lowering effect are enriched by PPE, but not TFs.
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Affiliation(s)
- Tingting Chen
- Department of Chemical Biology, The State University of New Jersey, Piscataway, NJ, USA
| | - Anna B Liu
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Shili Sun
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Nadim J Ajami
- The Alkek Center for Metagenomics and Microbiome Research, Molecular Virology and Microbiology Department, Baylor College of Medicine, Houston, TX, USA
| | - Matthew C Ross
- The Alkek Center for Metagenomics and Microbiome Research, Molecular Virology and Microbiology Department, Baylor College of Medicine, Houston, TX, USA
| | - Hong Wang
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Le Zhang
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Kenneth Reuhl
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, The State University of New Jersey, Piscataway, NJ, USA
| | - Koichi Kobayashi
- Department of Microbial Pathogenesis & Immunology, Texas A&M Health Science Center, College Station, TX, USA
| | - Janet C Onishi
- Department of Chemical Biology, The State University of New Jersey, Piscataway, NJ, USA
| | - Liping Zhao
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Chung S Yang
- Department of Chemical Biology, The State University of New Jersey, Piscataway, NJ, USA
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Lin R, He X, Chen H, He Q, Yao Z, Li Y, Yang H, Simpson S. Oil tea improves glucose and lipid levels and alters gut microbiota in type 2 diabetic mice. Nutr Res 2018; 57:67-77. [PMID: 30122197 DOI: 10.1016/j.nutres.2018.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/22/2018] [Accepted: 05/30/2018] [Indexed: 01/19/2023]
Abstract
Oil tea has traditionally been used in minority populations in China for treating various ailments in traditional Chinese medicine. Individually, green tea and ginger, which are the main ingredients of oil tea, have demonstrated antidiabetic effects; however, whether oil tea exerts antidiabetic effects remains unknown. In addition, aberrant gut microbiota structure is associated with diabetic status, and research indicates that there may be beneficial effects of tea on gut microbiota. Therefore, we hypothesized that oil tea exerts antidiabetic effects and induces alteration in gut microbiota. To test our hypothesis, we first examined the nutrition composition of oil tea. Then, db/db mice were randomly divided into 3 groups and orally gavaged with saline, metformin, and oil tea for 8 weeks. Fasting blood glucose (FBG), oral glucose tolerance test (OGTT), and lipid levels were tested during the experiment. 16S rRNA genes were sequenced and changes in gut microbiota in response pre/post treatment were examined. Our experiments showed that oil tea contains high concentrations of tea polyphenols (246.35 mg/100 g) and [6]-gingerol (2.98 mg/100 g). It appeared that oil tea treatment significantly suppressed the postprandial blood glucose elevation and lowered the levels of FBG, total cholesterol, triglycerides, and LDL-cholesterol (P < .05). The composition of gut microbiota changed significantly in response to oil tea treatment, Lachnospiraceae were significantly enriched (q < 0.05, LDA score> 3.5). Redundancy analysis identified 155 oil tea-modulating family level phylotypes, where Lachnospiraceae significantly correlated with FBG, total cholesterol, and LDL-cholesterol (P < .05). Our findings demonstrate that oil tea improved glucose and lipid levels and modulated gut microbiota in db/db mice.
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Affiliation(s)
- Rui Lin
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China; Guangxi Center for Disease Prevention and Control, Nanning, China.
| | - Xuan He
- Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Huafeng Chen
- Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Qin He
- Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Ziting Yao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China
| | - Yuanfan Li
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, China
| | - Hui Yang
- Guangxi Center for Disease Prevention and Control, Nanning, China
| | - Steve Simpson
- Melbourne School of Population & Global Health, University of Melbourne, Carlton, Australia; Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
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Mohabbulla Mohib M, Fazla Rabby S, Paran TZ, Mehedee Hasan M, Ahmed I, Hasan N, Abu Taher Sagor M, Mohiuddin S. Protective role of green tea on diabetic nephropathy—A review. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/23312025.2016.1248166] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Md. Mohabbulla Mohib
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - S.M. Fazla Rabby
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Tasfiq Zaman Paran
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Md. Mehedee Hasan
- Department of Pharmacy, State University of Bangladesh, Dhaka 1205, Bangladesh
| | - Iqbal Ahmed
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Nahid Hasan
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Md. Abu Taher Sagor
- Department of Pharmaceutical Sciences, North South University, Dhaka 1229, Bangladesh
| | - Sarif Mohiuddin
- Department of Anatomy, Pioneer Dental College and Hospital, Dhaka 1229, Bangladesh
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11
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Huang J, Xie Z, Wang Y, Zhang J, Wan X. Recent advances of anti-hyperglycemia and anti-diabetes actions of tea in animal studies. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2015.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Kuo CL, Chen TS, Liou SY, Hsieh CC. Immunomodulatory effects of EGCG fraction of green tea extract in innate and adaptive immunity via T regulatory cells in murine model. Immunopharmacol Immunotoxicol 2014; 36:364-70. [PMID: 25151997 DOI: 10.3109/08923973.2014.953637] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Green tea is a widely consumed beverage known for its beneficial anti-inflammatory, anti-oxidative, anti-mutagenic, anti-carcinogenic, and cardioprotective properties. Here, we administered epigallocatechin gallate fraction of green tea extract (EGTE) to mice for 6 weeks and examined the effects on the innate and adaptive immune responses by measuring phagocytic and natural killer (NK) cell activity, as well as antigen-specific proliferation, cytolysis, cytokine secretion, and antibody production. Our data show that EGTE administration increased NK cell cytolysis and peritoneal cell phagocytosis, as well as splenocyte proliferation and secretion of IL-2 and IFN-γ. Of note, EGTE treatment decreased the production antigen-specific IgE via increased the proportion of CD4+ CD25+ regulatory T lymphocytes in the spleen, suggesting that EGTE may play a role in regulating the allergic response.
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Affiliation(s)
- Chao-Lin Kuo
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University , Taichung, Taiwan , ROC
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Abstract
PURPOSE OF REVIEW Tea and coffee, after water, are the most commonly consumed beverages in the world and are the top sources of caffeine and antioxidant polyphenols in the American diet. The purpose of this review is to assess the health effects of chronic tea and/or coffee consumption. RECENT FINDINGS Tea consumption, especially green tea, is associated with significantly reduced risks for stroke, diabetes and depression, and improved levels of glucose, cholesterol, abdominal obesity and blood pressure. Habitual coffee consumption in large epidemiological studies is associated with reduced mortality, both for all-cause and cardiovascular deaths. In addition, coffee intake is associated with risks of heart failure, stroke, diabetes mellitus and some cancers in an inverse dose-dependent fashion. Surprisingly, coffee is associated with neutral to reduced risks for both atrial and ventricular arrhythmias. However, caffeine at high doses can increase anxiety, insomnia, calcium loss and possibly the risk of fractures. SUMMARY Coffee and tea can generally be recommended as health-promoting additions to an adult diet. Adequate dietary calcium intake may be particularly important for tea and coffee drinkers.
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Affiliation(s)
- Salman K Bhatti
- aSaint Luke's Mid America Heart Institute & University of Missouri-Kansas City, Kansas City, Missouri bJohn Ochsner Heart and Vascular Institute, Ochsner Clinical School, The University of Queensland School of Medicine, New Orleans cDepartment of Preventive Medicine, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, USA
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14
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Green tea polyphenol epigallocatechin-3-gallate enhance glycogen synthesis and inhibit lipogenesis in hepatocytes. BIOMED RESEARCH INTERNATIONAL 2013; 2013:920128. [PMID: 24066304 PMCID: PMC3771263 DOI: 10.1155/2013/920128] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 07/16/2013] [Accepted: 07/25/2013] [Indexed: 01/07/2023]
Abstract
The beneficial effects of green tea polyphenols (GTP) against metabolic syndrome and type 2 diabetes by suppressing appetite and nutrient absorption have been well reported. However the direct effects and mechanisms of GTP on glucose and lipid metabolism remain to be elucidated. Since the liver is an important organ involved in glucose and lipid metabolism, we examined the effects and mechanisms of GTP on glycogen synthesis and lipogenesis in HepG2 cells. Concentrations of GTP containing 68% naturally occurring (−)-epigallocatechin-3-gallate (EGCG) were incubated in HepG2 cells with high glucose (30 mM) under 100 nM of insulin stimulation for 24 h. GTP enhanced glycogen synthesis in a dose-dependent manner. 10 μM of EGCG significantly increased glycogen synthesis by 2fold (P < 0.05) compared with insulin alone. Western blotting revealed that phosphorylation of Ser9 glycogen synthase kinase 3β and Ser641 glycogen synthase was significantly increased in GTP-treated HepG2 cells compared with nontreated cells. 10 μM of EGCG also significantly inhibited lipogenesis (P < 0.01). We further demonstrated that this mechanism involves enhanced expression of phosphorylated AMP-activated protein kinase α and acetyl-CoA carboxylase in HepG2 cells. Our results showed that GTP is capable of enhancing insulin-mediated glucose and lipid metabolism by regulating enzymes involved in glycogen synthesis and lipogenesis.
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Nguyen M, Yang E, Neelkantan N, Mikhaylova A, Arnold R, Poudel MK, Stewart AM, Kalueff AV. Developing 'integrative' zebrafish models of behavioral and metabolic disorders. Behav Brain Res 2013; 256:172-87. [PMID: 23948218 DOI: 10.1016/j.bbr.2013.08.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 07/31/2013] [Accepted: 08/03/2013] [Indexed: 02/09/2023]
Abstract
Recently, the pathophysiological overlap between metabolic and mental disorders has received increased recognition. Zebrafish (Danio rerio) are rapidly becoming a popular model organism for translational biomedical research due to their genetic tractability, low cost, quick reproductive cycle, and ease of behavioral, pharmacological or genetic manipulation. High homology to mammalian physiology and the availability of well-developed assays also make the zebrafish an attractive organism for studying human disorders. Zebrafish neurobehavioral and endocrine phenotypes show promise for the use of zebrafish in studies of stress, obesity and related behavioral and metabolic disorders. Here, we discuss the parallels between zebrafish and other model species in stress and obesity physiology, as well as outline the available zebrafish models of weight gain, metabolic deficits, feeding, stress, anxiety and related behavioral disorders. Overall, zebrafish demonstrate a strong potential for modeling human behavioral and metabolic disorders, and their comorbidity.
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Affiliation(s)
- Michael Nguyen
- Department of Biomedical Engineering, University of Virginia, 415 Lane Road, Charlottesville, VA 22908, USA; Thomas Jefferson High School for Science and Technology, 6560 Braddock Road, Alexandria, VA 22312, USA
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