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Green tea extract

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https://www.readbyqxmd.com/read/29665620/personalized-cardio-metabolic-responses-to-an-anti-inflammatory-nutrition-intervention-in-obese-adolescents-a-randomized-controlled-crossover-trial
#1
Aoibheann M McMorrow, Ruth M Connaughton, Tiago R Magalhães, Fiona C McGillicuddy, Maria F Hughes, David Cheishvili, Melissa J Morine, Sean Ennis, Marie-Louise Healy, Edna F Roche, Richard E Tremblay, Moshe Szyf, Fiona E Lithander, Helen M Roche
SCOPE: Chronic inflammation and hypoadiponectinemia are characteristic of obesity-induced insulin resistance (IR). The effect of an anti-inflammatory nutrition supplement (AINS) on IR and adiponectin biology in overweight adolescents was investigated. The secondary objective was to examine the extent to which individuals' biomarker profiles, derived from baseline phenotypes, predicted response or not to the AINS. Additionally, the impact of DNA methylation on intervention efficacy was assessed...
April 17, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29659496/synthesis-of-theaflavins-and-their-functions
#2
REVIEW
Masumi Takemoto, Hiroaki Takemoto
Numerous epidemiological and interventional clinical studies have consistently reported that black tea is good for human health. The polyphenolic compound, theaflavin, and its galloyl esters (theaflavins) are the primary red pigments in black tea that possess several health benefits, including fat-reducing and glucose-lowering capabilities and lifestyle-related disease prevention related to anti-obesity, anticancer, anti-atherosclerotic, anti-inflammatory, antiviral, antibacterial, anti-osteoporotic, and anti-dental caries properties...
April 16, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29651730/reductive-decolorization-of-azo-dyes-via-in-situ-generation-of-green-tea-extract-iron-chelate
#3
Ling Yu, Yewen Qiu, Yang Yu, Shanquan Wang
In this study, rapid decolorization of azo dyes was achieved by in situ-generated green tea extract-iron (GTE-Fe) chelate for the first time. When changing reaction conditions from the aerobic condition to the anaerobic condition, the decolorization efficiencies of two azo dyes, i.e., acid orange 7 (AO7) and acid black 1 (AB1), increased from 46.38 and 83.17 to 90.13 and 95.37%, respectively. The recalcitrant AO7 was then selected as the targeting pollutant in subsequent optimization and mechanism studies. Experimental evidences showed that the initial concentrations of AO7, Fe(III), and GTE are the key factors to optimize the decolorization efficiency...
April 13, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29651001/effects-of-green-tea-on-mirna-and-microbiome-of-oral-epithelium
#4
Guy R Adami, Christy C Tangney, Jessica L Tang, Yalu Zhou, Saba Ghaffari, Ankur Naqib, Saurabh Sinha, Stefan J Green, Joel L Schwartz
Consumption of green tea (GT) extracts or purified catechins has shown the ability to prevent oral and other cancers and inhibit cancer progression in rodent models, but the evidence for this in humans is mixed. Working with humans, we sought to understand the source of variable responses to GT by examining its effects on oral epithelium. Lingual epithelial RNA and lingual and gingival microbiota were measured before and after 4 weeks of exposure in tobacco smokers, whom are at high risk of oral cancer. GT consumption had on average inconsistent effects on miRNA expression in the oral epithelium...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29621948/sinecatechins-10-ointment-for-genital-warts-case-report-of-a-beneficial-reaction-in-an-hiv-positive-woman
#5
Roberta Bilenchi, Marco Campoli, Emanuele Trovato, Elisa Cinotti, Pietro Rubegni, Michele Fimiani
Patients with HIV infection are more likely to develop anogenital warts compared to HIV-negative people and are susceptible to treatment failures and recurrences. We report a case of extensive vulvar warts in an HIV-positive woman successfully treated with sinecatechins ointment. After the failure of a combination of cryotherapy and imiquimod 5% cream, we started therapy with sinecatechins 10% ointment. The patient developed an intense local inflammatory reaction after three weeks that induced the discontinuation of the therapy...
January 1, 2018: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/29616322/inter-individual-variability-in-the-production-of-flavan-3-ol-colonic-metabolites-preliminary-elucidation-of-urinary-metabotypes
#6
Pedro Mena, Iziar A Ludwig, Virginia B Tomatis, Animesh Acharjee, Luca Calani, Alice Rosi, Furio Brighenti, Sumantra Ray, Julian L Griffin, Les J Bluck, Daniele Del Rio
PURPOSE: There is much information on the bioavailability of (poly)phenolic compounds following acute intake of various foods. However, there are only limited data on the effects of repeated and combined exposure to specific (poly)phenol food sources and the inter-individual variability in their bioavailability. This study evaluated the combined urinary excretion of (poly)phenols from green tea and coffee following daily consumption by healthy subjects in free-living conditions. The inter-individual variability in the production of phenolic metabolites was also investigated...
April 3, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29606767/evaluation-and-application-of-prebiotic-and-probiotic-ingredients-for-development-of-ready-to-drink-tea-beverage
#7
Shweta Tewari, Kriti Kumari Dubey, Rekha S Singhal
Ready-to-drink (RTD) ice tea is a ready prepared tea, produced from green and black tea originating from same plant Camellia sinensis . The objective of this study was to determine the effect of prebiotics [galacto-oligosaccharide (GOS), fructo-oligosaccharide (FOS), and inulin] or synbiotic ingredients (GOS, FOS, inulin, and Lactobacillus acidophilus ) on the sensory properties and consumer acceptability of RTD. The quality of green tea extract (GTE) and black tea extract (BTE) was improved with pretreatment of cellulase and pectinase enzymes...
April 2018: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/29604256/undesirable-impact-on-structure-and-stability-of-insulin-on-addition-of-catechin-hydrate-with-sugar
#8
Anjeeta Rani, Indrani Jha, Pannuru Venkatesu
Insulin (In) based formulation has been used over decades for the cure of In-dependent diabetic patients, however, more attempts are still required to improve the remedial use of In. In this regard, the use of green tea has become widespread nowadays. However, it is unknown that (+)-catechin hydrate (CAT), a major component of green tea which enhances anti-diabetic activity of In, will or will not enhance the structure and stability of In if ingested with sugars. Interestingly, by using biophysical techniques, present study reveals the fact that the use of sugar during the intake of green tea extract may produce unwanted effects on In which may further lead to some disorders associated with In stability and also create obstacle in successful implications of In formulations...
March 28, 2018: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29595075/epigallocatechin-3-gallate-rich-green-tea-extract-ameliorates-fatty-liver-and-weight-gain-in-mice-fed-a-high-fat-diet-by-activating-the-sirtuin-1-and-amp-activating-protein-kinase-pathway
#9
Ui-Jin Bae, John Park, Il Woon Park, Byung Min Chae, Mi-Ra Oh, Su-Jin Jung, Geon-Seek Ryu, Soo-Wan Chae, Byung-Hyun Park
The prevalence of metabolic diseases has risen globally in parallel with the obesity epidemic over the past few decades. Green tea has been reported to have metabolically beneficial effects on obesity; however, the mechanism by which green tea regulates lipid metabolism is not clearly understood. Male c57BL/6 mice were fed a normal chow diet, a high-fat diet (HFD), or an HFD supplemented with various doses of epigallocatechin gallate-rich green tea extract (GTE) for 12 weeks. GTE supplementation reduced body weight gain, prevented hepatic fat accumulation, decreased hypertriglyceridemia, and improved hyperglycemia and insulin resistance in HFD-fed mice...
March 29, 2018: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/29580974/the-safety-of-green-tea-and-green-tea-extracts-consumption-in-adults-results-of-a-systematic-review
#10
REVIEW
Jiang Hu, Donna Webster, Joyce Cao, Andrew Shao
A systematic review of published toxicology and human intervention studies was performed to characterize potential hazards associated with consumption of green tea and its preparations. A review of toxicological evidence from laboratory studies reveals the liver as target organ and hepatotoxicity as critical effect, which was strongly associated with certain dosing conditions (e.g. bolus dose via gavage, fasting), and positively correlated with total catechin and epigallocatechingallate (EGCG) content. A review of adverse event (AE) data from 159 human intervention studies yields the findings consistent with toxicological evidence in that a limited range of concentrated, catechin-rich green tea preparations when ingested in large solid bolus doses resulted in hepatic AEs in a dose-dependent manner, but not brewed tea or extracts consumed in beverages or as part of food...
March 23, 2018: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29576775/a-comparative-evaluation-of-morinda-citrifolia-green-tea-polyphenols-and-triphala-with-5-sodium-hypochlorite-as-an-endodontic-irrigant-against-enterococcus-faecalis-an-in-vitro-study
#11
A R Divia, Mali G Nair, Jolly Mary Varughese, Shobha Kurien
Background: Endodontic infections require effective removal of microorganisms from the root canal system for long-term prognosis. Sodium hypochlorite (NaOCl) is the most effective irrigant currently, but potential complications due to its toxicity warrant search for newer alternatives. In this study, the antimicrobial efficacy of Morinda citrifolia (MC), green tea polyphenols and Triphala was compared with 5% NaOCl against Enterococcus faecalis . Materials and Methods: In this in vitro study sixty extracted human premolar teeth were infected with E...
March 2018: Dental Research Journal
https://www.readbyqxmd.com/read/29571304/ultrasound-assisted-emulsification-microextraction-in-an-online-system-for-determination-of-cadmium-in-water-and-tea-samples
#12
Leane Santos Nunes, Valfredo Azevedo Lemos
In this work, a method using ultrasound-assisted emulsification microextraction (USAEME) without the use of ligands in an online system for preconcentration and determination of cadmium was developed. The method was based on the preconcentration of cadmium by USAEME, employing trichloroethylene as the extraction solvent, and subsequent retention of the rich phase in a mini-column packed with silica gel. The extracted metal was determined by flame atomic absorption spectrometry. The parameters that affect the extraction of cadmium were optimized using the univariate method...
March 23, 2018: Journal of AOAC International
https://www.readbyqxmd.com/read/29568244/herbal-medicine-for-sports-a-review
#13
REVIEW
Maha Sellami, Olfa Slimeni, Andrzej Pokrywka, Goran Kuvačić, Lawrence D Hayes, Mirjana Milic, Johnny Padulo
The use of herbal medicinal products and supplements has increased during last decades. At present, some herbs are used to enhance muscle strength and body mass. Emergent evidence suggests that the health benefits from plants are attributed to their bioactive compounds such as Polyphenols, Terpenoids, and Alkaloids which have several physiological effects on the human body. At times, manufacturers launch numerous products with banned ingredient inside with inappropriate amounts or fake supplement inducing harmful side effect...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29566474/combined-extracts-of-artemisia-and-green-tea-mitigated-alcoholic-gastritis-via-enhanced-heat-shock-protein-27
#14
Yong Seok Kim, Migyeong Jeong, Young Min Han, Jong Min Park, Sang Oh Kwon, Seong Pyo Hong, Ki Baik Hahm
Background/Aims: Several lines of evidence from epidemiologic and laboratory studies have shown that the consumption of Artemisia or green tea extracts (MPGT) is inversely associated with the risk of alcohol-induced damage and other chronic diseases. Supported by previous studies showing that the combined extract of Artemisia and green tea, MPGT, exerted significantly either antioxidative or anti-inflammatory actions against Helicobacter pylori -associated gastric diseases, it was hypothesized that MPGT can offer protection against alcoholic gastritis...
March 25, 2018: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/29563824/in-vivo-validation-of-the-multicomponent-powder-vitachelox-%C3%A2-against-the-deposition-of-polluting-ions
#15
Luca Giacomelli, Stefano Togni, Martino Meneghin, Roberto Eggenhöffner, Giada Maramaldi
Purpose: The purpose of this in vivo study is to evaluate the acute clinical application of a multicomponent powder (Vitachelox® ), including three naturally occurring standardized extracts rich in polyphenols (grape seed extract, green tea extract, oak wood/bark extract), on healthy volunteers by measuring prevention of any metal deposition within the stratum corneum (SC) following a 6-h exposure period in a polluted environment. Patients and methods: In this in vivo study, we evaluated the skin protective activity of the multicomponent powder formulated in a base emulsion compared to a relevant placebo cream...
2018: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/29556381/protective-effect-of-pu-erh-tea-extracts-against-ethanol-induced-gastric-mucosal-damage-in-rats
#16
Jinna Yang, Wangyi Zhou, Yaru Gu, Jinwei Dai, Xinxin Li, Ping Tai, Yanchuan Li, Xiaohui Ma, Yuyang Zhang
Pu-erh tea has become a focus of research due to its reported biological activities, including anti-oxidation, anti-inflammation and anti-immunosenescence. The present study was performed to evaluate the potential gastroprotective function of Pu-erh tea extracts against ethanol-induced gastric mucosal damage in rats. Sprague Dawley rats were randomly divided into seven groups: A normal control, a model control, a cimetidine (0.08 g/kg) group, three Pu-erh tea extracts groups (low, moderate and high-dose; 0...
April 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29554110/epigallocatechin-3-gallate-improves-cardiac-hypertrophy-and-short-term-memory-deficits-in-a-williams-beuren-syndrome-mouse-model
#17
Paula Ortiz-Romero, Cristina Borralleras, Mònica Bosch-Morató, Biuse Guivernau, Guillermo Albericio, Francisco J Muñoz, Luis A Pérez-Jurado, Victoria Campuzano
Williams-Beuren syndrome (WBS) is a neurodevelopmental disorder caused by a heterozygous deletion of 26-28 genes at chromosome band 7q11.23. The complete deletion (CD) mouse model mimics the most common deletion found in WBS patients and recapitulates most neurologic features of the disorder along with some cardiovascular manifestations leading to significant cardiac hypertrophy with increased cardiomyocytes' size. Epigallocatechin-3-gallate (EGCG), the most abundant catechin found in green tea, has been associated with potential health benefits, both on cognition and cardiovascular phenotypes, through several mechanisms...
2018: PloS One
https://www.readbyqxmd.com/read/29553261/large-yellow-tea-attenuates-macrophage-related-chronic-inflammation-and-metabolic-syndrome-in-high-fat-diet-treated-mice
#18
Na Xu, Jun Chu, Min Wang, Ling Chen, Liang Zhang, Zhongwen Xie, Jinsong Zhang, Chi-Tang Ho, Daxiang Li, Xiaochun Wan
Large yellow tea is a traditional beverage in China with unique toasty flavor. Preliminary study using 3T3-L1 cells indicted that large yellow tea, possessed more potent lipid-lowering efficacy than green, black, dark and white teas. In the present study we further investigated its influence on metabolic syndrome in high-fat diet (HFD) mouse model with an emphasis on dose response. Thirty-two C57BL/6 male mice were randomly divided into 4 groups: low-fat diet (LFD), HFD, HFD+2.5% large yellow tea hot-water extract (YT, equivalent to 10 cups of tea daily for humans), HFD+0...
March 19, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29552273/are-natural-ingredients-effective-in-the-management-of-hyperpigmentation-a-systematic-review
#19
REVIEW
Jasmine C Hollinger, Kunal Angra, Rebat M Halder
BACKGROUND: Hyperpigmentation disorders are commonly encountered in dermatology clinics. Botanical and natural ingredients have gained popularity as alternative depigmenting products. OBJECTIVE: We sought to review clinical studies evaluating the use of different natural products in treating hyperpigmentation so clinicians are better equipped to educate their patients. Specific ingredients reviewed include azelaic acid, aloesin, mulberry, licorice extracts, lignin peroxidase, kojic acid, niacinamide, ellagic acid, arbutin, green tea, turmeric, soy, and ascorbic acid...
February 2018: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29549943/green-synthesis-of-water-soluble-nontoxic-inorganic-polymer-nanocomposites-containing-silver-nanoparticles-using-white-tea-extract-and-assessment-of-their-in-vitro-antioxidant-and-cytotoxicity-activities
#20
Zeinab Haghparasti, Mahnaz Mahdavi Shahri
The use of nontoxic biological compounds in the synthesis of nanomaterials is an ecofriendly and cost-effective approach in nanotechnology. The present work was carried out to develop silver nanoparticles (Ag-NPs) by a green method using white tea (Wt) extract as reducing agent for reduction of silver nitrate as silver precursor into the lamellar space of inorganic polymer montmorillonite (Mt) as an effective protective reagent and support as well. The bioformed Wt/Ag@Mt nanocomposite (NCs) was compared with pure biosynthesized Wt/Ag-NPs under free stabilizer condition and effect of Mt stabilizer on antioxidant, cytotoxicity and structural properties were also investigated...
June 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
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