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https://www.readbyqxmd.com/read/28895793/food-stabilizing-antioxidants-increase-nutrient-bioavailability-in-the-in-vitro-model
#1
Magdalena Mika, Agnieszka Wikiera, Anna Antończyk, Maja Grabacka
OBJECTIVE: We investigated whether antioxidants may enhance bioavailability of lipids and carbohydrates and therefore increase the risk of obesity development. METHODS: We tested how supplementation with antioxidants (0.01% butylated hydroxytoluene [BHT], α-tocopherol, and green tea catechins) of a diet containing butter and wheat bread affects bioavailability of fats and carbohydrates. The absorption of the in vitro digested diet was estimated in the intestinal epithelia model of the Caco-2 cells cultured in Transwell chambers...
September 12, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28891395/effects-of-catechins-and-caffeine-on-the-development-of-atherosclerosis-in-mice
#2
Litong Liu, Izumi Nagai, Ying Gao, Yoshibumi Matsushima, Yoshichika Kawai, Kazutoshi Sayama
Atherosclerosis is one of the diseases related to metabolic syndrome which is caused by obesity. Previous reports have shown that green tea and its components have anti-obesity effect. We examined whether catechins and caffeine can prevent the development of atherosclerosis by oral administration, singly or in combination to the atherosclerosis model mice. Results demonstrated that the number of atherosclerotic regions in the aorta was significantly reduced by the combined treatment, and the atherosclerotic area was also improved...
September 11, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28863365/a-polyphenolic-extract-from-green-tea-leaves-activates-fat-browning-in-high-fat-diet-induced-obese-mice
#3
Audrey M Neyrinck, Laure B Bindels, Lucie Geurts, Matthias Van Hul, Patrice D Cani, Nathalie M Delzenne
Fat browning has emerged as an attractive target for the treatment of obesity and related metabolic disorders. Its activation leads to increased energy expenditure and reduced adiposity, thus contributing to a better energy homeostasis. Green tea extracts (GTEs) were shown to attenuate obesity and low-grade inflammation and to induce the lipolytic pathway in the white adipose tissue (WAT) of mice fed a high-fat diet. The aim of the present study was to determine whether the antiobesity effect of an extract from green tea leaves was associated with the activation of browning in the WAT and/or the inhibition of whitening in the brown adipose tissue (BAT) in HF-diet induced obese mice...
July 24, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28804438/green-tea-extract-induces-genes-related-to-browning-of-white-adipose-tissue-and-limits-weight-gain-in-high-energy-diet-fed-rat
#4
Li-Han Chen, Yi-Wen Chien, Chung-Tiang Liang, Ching-Hung Chan, Meng-Han Fan, Hui-Yu Huang
Background: A wealth of research has reported on the anti-obesity effects of green tea extract (GTE). Although browning of white adipose tissue (WAT) has been reported to attenuate obesity, no study has disclosed the effects of GTE on browning in Sprague Dawley rats. Objectives: The aims of the study were to investigate the effects of GTE on anti-obesity and browning, and their underlying mechanisms. Methods: Four groups of rats (n=10/group) were used including a normal diet with vehicle treatment, and a high-energy diet (HED) with vehicle or GTE by oral gavage at 77...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28760074/redox-status-on-different-regions-of-the-central-nervous-system-of-obese-and-lean-rats-treated-with-green-tea-extract
#5
Rita Cassia Macedo, Eduardo Fernandes Bondan, Rosemari Otton
OBJECTIVES: The purpose of this study was to evaluate some indicators of redox status, and inflammation on different regions of the central nervous system (CNS) of obese rats treated with green tea (GT). We hypothesized that obesity could affect the redox balance in different brain regions due to the diverse nature of the cells as well as the selective neuronal vulnerability to oxidative stress, and GT could triggers benefits effects restoring the redox status. METHODS: Male Wistar rats were treated with GT by gavage (12 weeks/5 days/week; 500 mg/kg of body weight) and obesity was induced by cafeteria diet (8 weeks)...
July 31, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28739640/egcg-ameliorates-high-fat-and-high-fructose-induced-cognitive-defects-by-regulating-the-irs-akt-and-erk-creb-bdnf
#6
Yashi Mi, Guoyuan Qi, Rong Fan, Qinglian Qiao, Yali Sun, Yuqi Gao, Xuebo Liu
Obesity, which is caused by an energy imbalance between calorie intake and consumption, has become a major international health burden. Obesity increases the risk of insulin resistance and age-related cognitive decline, accompanied by peripheral inflammation. (-)-Epigallocatechin-3-gallate (EGCG), the major polyphenol in green tea, possesses antioxidant, anti-inflammatory, and cardioprotective activities; however, few reports have focused on its potential effect on cognitive disorders. In this study, our goal was to investigate the protective effects of EGCG treatment on insulin resistance and memory impairment induced by a high-fat and high-fructose diet (HFFD)...
July 24, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28678746/long-term-supplementation-of-decaffeinated-green-tea-extract-does-not-modify-body-weight-or-abdominal-obesity-in-a-randomized-trial-of-men-at-high-risk-for-prostate-cancer
#7
Nagi B Kumar, Roshni Patel, Julio Pow-Sang, Philippe E Spiess, Raoul Salup, Christopher R Williams, Michael J Schell
BACKGROUND: Evidence continues to demonstrate the role of obesity in prostate carcinogenesis and prognosis, underscoring the need to identify and continue to evaluate the effective interventions to reduce obesity in populations at high risk. The aim of the study was to determine the effect of daily consumption of decaffeinated green tea catechins (GTC) formulation (Polyphenon E® (PolyE)) for 1 year on biomarkers of obesity in men who are at high risk for prostate cancer. MATERIALS AND METHODS: A randomized, double-blinded trial was conducted targeting 97 men diagnosed with HGPIN or ASAP...
June 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28665330/effects-of-epigallocatechin-3-gallate-on-autophagic-lipolysis-in-adipocytes
#8
Sang-Nam Kim, Hyun-Jung Kwon, Seun Akindehin, Hyun Woo Jeong, Yun-Hee Lee
Previous studies demonstrated effects of green tea on weight loss; however, green tea-induced modulation of adipocyte function is not fully understood. Here, we investigated effects of the major green tea phytochemical, epigallocatechin-3-gallate (EGCG) on triglyceride contents, lipolysis, mitochondrial function, and autophagy, in adipocytes differentiated from C₃H10T1/2 cells and immortalized pre-adipocytes in vitro. EGCG reduced the triglycerol content significantly in adipocytes by 25%, comparable to the nutrient starvation state...
June 30, 2017: Nutrients
https://www.readbyqxmd.com/read/28659734/effects-of-epigallocatechin-3-gallate-on-thermogenesis-and-mitochondrial-biogenesis-in-brown-adipose-tissues-of-diet-induced-obese-mice
#9
Mak-Soon Lee, Yoonjin Shin, Sunyoon Jung, Yangha Kim
Background: Epigallocatechin-3-gallate (EGCG) is the major polyphenol in green tea and has been considered a natural agent that can help to reduce the risk of obesity. Objective: The aim of this study was to investigate the effects of EGCG on thermogenesis and mitochondrial biogenesis in brown adipose tissue (BAT) of diet-induced obese mice. Methods: Male C57BL/6J mice were provided a high-fat diet for 8 weeks to induce obesity, following which they were divided into two groups: one on a high-fat control diet and the other on a 0...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28643888/combination-of-citrus-polymethoxyflavones-green-tea-polyphenols-and-lychee-extracts-suppresses-obesity-and-hepatic-steatosis-in-high-fat-diet-induced-obese-mice
#10
Min-Hsiung Pan, Guliang Yang, Shiming Li, Ming-Yi Li, Mei-Ling Tsai, Jia-Ching Wu, Vladimir Badmaev, Chi-Tang Ho, Ching-Shu Lai
SCOPE: SlimTrym(®) is a formulated product composed of citrus polymethoxyflavones (PMFs), green tea extract and lychee extract. We investigated the effect of dietary SlimTrym(®) on diet-induced obesity and associated non-alcoholic fatty liver disease (NAFLD) in mice. METHODS AND RESULTS: Male C57BL/6 mice were fed a normal diet (ND), high fat diet (HFD) or HFD containing 0.1% or 0.5% SlimTrym(®) for sixteen weeks. Dietary SlimTrym(®) significantly reduced weight gain and relative perigonadal, retroperitoneal, mesenteric fat weight as well as the size of adipocyte in HFD-fed mice...
June 23, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28638220/green-tea-polyphenols-ameliorate-non-alcoholic-fatty-liver-disease-through-upregulating-ampk-activation-in-high-fat-fed-zucker-fatty-rats
#11
Yi Tan, Jane Kim, Jing Cheng, Madeleine Ong, Wei-Guo Lao, Xing-Liang Jin, Yi-Guang Lin, Linda Xiao, Xue-Qiong Zhu, Xian-Qin Qu
AIM: To investigate protective effects and molecular mechanisms of green tea polyphenols (GTP) on non-alcoholic fatty liver disease (NAFLD) in Zucker fatty (ZF) rats. METHODS: Male ZF rats were fed a high-fat diet (HFD) for 2 wk then treated with GTP (200 mg/kg) or saline (5 mL/kg) for 8 wk, with Zucker lean rat as their control. At the end of experiment, serum and liver tissue were collected for measurement of metabolic parameters, alanine aminotransferase (ALT) and aspartate aminotransferase (AST), inflammatory cytokines and hepatic triglyceride and liver histology...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28636182/effects-of-green-tea-on-lipid-metabolism-in-overweight-or-obese-people-a-meta-analysis-of-randomized-controlled-trials
#12
Yuan Fen, Dong Hui, Fang Ke, Gong Jing, Lu Fu Er
SCOPE: The effects of green tea on lipid metabolism were inconsistent. The objective of this meta-analysis was to evaluate the effects of green tea on lipid metabolism in overweight or obese people. METHODS AND RESULTS: We searched randomized controlled trials(RCTs) comparing green tea with a control on lipid metabolism on PUBMED and WEB OF SCIENCE (January 1990 to September 2016), COCHRANE and EMBASE (updated to October 2016), and the Chinese databases CNKI, WanFang and CBMD...
June 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28631923/influence-of-ingesting-a-flavonoid-rich-supplement-on-the-metabolome-and-concentration-of-urine-phenolics-in-overweight-obese-women
#13
David C Nieman, Sivapriya Ramamoorthy, Colin D Kay, Courtney L Goodman, Christopher R Capps, Zack L Shue, Nicole Heyl, Mary H Grace, Mary A Lila
This study evaluated the effect of ingesting a flavonoid-rich supplement (329 mg/d) on total urine phenolics and shifts in plasma metabolites in overweight/obese female adults using untargeted metabolomics procedures. Participants (N = 103, 18-65 y, BMI ≥ 25 kg/m(2)) were randomized to flavonoid (F) or placebo (P) groups for 12 weeks with blood and 24 h urine samples collected prestudy and after 4 and 12 weeks in a parallel design. Supplements were prepared as chewable tablets and included vitamin C, wild bilberry fruit extract, green tea leaf extract, quercetin, caffeine, and omega 3 fatty acids...
June 30, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28586744/protective-effects-of-green-tea-on-olanzapine-induced-metabolic-syndrome-in-rats
#14
Bibi Marjan Razavi, Fariba Lookian, Hossein Hosseinzadeh
Atypical antipsychotics particularly olanzapine are associated with obesity and serious metabolic disturbances. As green tea (Camellia sinensis) is generally associated with beneficial effects on obesity and other metabolic disturbances, this study was undertaken to evaluate the effect of green tea aqueous extract (GTAE) on olanzapine induced weight gain and metabolic abnormalities in rats. Male Wistar rats were divided into eight groups: control, olanzapine (5mg/kg/day, IP.), GTAE (25, 50 and 100mg/kg/day, IP...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28584836/effect-of-green-tea-on-metabolic-and-hormonal-aspect-of-polycystic-ovarian-syndrome-in-overweight-and-obese-women-suffering-from-polycystic-ovarian-syndrome-a-clinical-trial
#15
Hatav Gasemi Tehrani, Maryam Allahdadian, Farzane Zarre, Hanie Ranjbar, Fateme Allahdadian
BACKGROUND AND OBJECTIVE: Polycystic ovarian syndrome (PCOS) is the common cause of Oligo-ovulation. This syndrome causes long-term metabolic issues as well as increase the risk of diabetes type 2, hypertension, dyslipidemia, and cardiovascular disease. The current research aimed to study the effect of green tea on weight and hormonal changes of women suffering from PCOS. METHODS: This two group, double-blind, randomized clinical trial was conducted in Isfahan city...
2017: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/28510251/short-term-effects-of-green-tea-chronotherapy-on-the-metabolic-homeostasis-of-mice-on-different-diets
#16
R P Amorim, I P Daher, F P D Arcangelo, M F Bellini, W A Orcini, G R Sarria, R L Peruquetti
Biological rhythms can be defined as changes in physiological or behavioral variables that repeat at certain time intervals. Rhythms that last approximately 24 h are referred to as circadian rhythms. Modern lifestyles have drastically affected human habits, as well as the population's eating habits. These changes have generated an epidemic of metabolic syndromes, such as obesity and diabetes. In an attempt to combat obesity, populations have attempted to use many different herbal remedies and plant-based drugs, the most common of which is Camellia sinensis, or green tea...
May 10, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28507012/dietary-factors-promoting-brown-and-beige-fat-development-and-thermogenesis
#17
REVIEW
Meshail Okla, Jiyoung Kim, Karsten Koehler, Soonkyu Chung
Brown adipose tissue (BAT) is a specialized fat tissue that has a high capacity to dissociate cellular respiration from ATP utilization, resulting in the release of stored energy as heat. Adult humans possess a substantial amount of BAT in the form of constitutively active brown fat or inducible beige fat. BAT activity in humans is inversely correlated with adiposity, blood glucose concentrations, and insulin sensitivity; this suggests that strategies aimed at BAT-mediated bioenergetics are an attractive therapeutic target in combating the continuing epidemic of obesity and diabetes...
May 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28445390/prevention-of-colorectal-cancer-by-targeting-obesity-related-disorders-and-inflammation
#18
REVIEW
Yohei Shirakami, Masaya Ohnishi, Hiroyasu Sakai, Takuji Tanaka, Masahito Shimizu
Colorectal cancer is a major healthcare concern worldwide. Many experimental and clinical studies have been conducted to date to discover agents that help in the prevention of this disease. Chronic inflammation in colonic mucosa and obesity, and its related metabolic abnormalities, are considered to increase the risk of colorectal cancer. Therefore, treatments targeting these factors might be a promising strategy to prevent the development of colorectal cancer. Among a number of functional foods, various phytochemicals, including tea catechins, which have anti-inflammatory and anti-obesity properties, and medicinal agents that ameliorate metabolic disorders, might also be beneficial in the prevention of colorectal cancer...
April 26, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28381812/a-simple-enzymatic-biotransformation-method-using-fresh-green-tea-leaves-efficiently-generates-theaflavin-containing-fermentation-water-that-has-potent-physiological-functions-in-mice-and-humans
#19
Masumi Takemoto, Hiroaki Takemoto, Haruka Kouno, Tomomi Soeda, Takamichi Moriya
The polyphenolic compound theaflavin, the main red pigment in black tea, possesses many beneficial properties, such as fat-reducing and glucose-lowering capabilities. To produce theaflavin-containing fermentation water on a large scale, we have developed a simple, inexpensive, and selective enzymatic biotransformation method to obtain sufficient levels from fresh green tea leaves. Subsequent administration of theaflavin-containing fermentation water to obese mice on a high-fat diet inhibited body weight gain, decreased casual blood glucose and fasting blood glucose levels, and lowered mesenteric and total fat composition...
April 1, 2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28352352/combination-therapy-with-catechins-and-caffeine-inhibits-fat-accumulation-in-3t3-l1-cells
#20
Xiaojuan Zhu, Licong Yang, Feng Xu, Lezhen Lin, Guodong Zheng
Catechins and caffeine, which are green tea components, have a slimming effect; however, the combinational effect of fat metabolism in 3T3-L1 cells remains unclear. In the present study, 3T3-L1 cells were treated with catechins and caffeine in combination, and it was found that combination therapy with catechins and caffeine markedly reduced intracellular fat accumulation, mRNA expression levels of peroxisome proliferator-activated receptor-γ and CCAAT/enhancer-binding protein α in the early stage of cell differentiation were significantly reduced, and mRNA expression of fatty acid synthetase(FAS) andglycerol-3-phosphate dehydrogenase protein expression levels of FAS were downregulated...
February 2017: Experimental and Therapeutic Medicine
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