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Yueyue Tian, Yunhe Zhao, Lixia Zhang, Wei Mu, Zhengqun Zhang
The tea green leafhopper, Empoasca onukii Matsuda (Hemiptera: Cicadellidae), is an economically important pest of tea crops, Camellia sinensis (L.) O. Kuntze (Ericales: Theaceae), in China. The morphological, physiological, and biochemical changes of two tea cultivars, the normal green tea cultivar 'Fudingdabai' and the novel chlorophyll-deficient albino cultivar 'Huangjinya', infested by E. onukii were investigated to determine the tolerance of different tea cultivars to E. onukii attack. E.onukii infestation affected the growth of tea plants, and decreased the shoot length, leaf area, leaf thickness, and stem diameter...
February 20, 2018: Journal of Economic Entomology
Bingjun Qian, Lirong Yin, Xiaomin Yao, Yaoguang Zhong, Juan Gui, Feifeng Lu, Fuming Zhang, Jianhua Zhang
The saponins, as components of tea seed meal (TSM), are undesirable hemolytic components, and should be degraded for reducing their hemolytic activity in order to be used in animal feed. In this study, β-glucuronidase was verified to be a potent hydrolase of tea seed saponins to reduce their hemolytic activity, and a β-glucuronidase-producing Lactobacillus crustorum (L. crustorum) strain was screened from raw bovine milk. Next, solid-state fermentation with the isolated L. crustorum and a Bacillus subtilis natto strain, which can produce cellulase and hence improve the fermentation performance of tea seed meal, was processed for detoxification of tea seed meal...
February 20, 2018: FEMS Microbiology Letters
Gagan Chhabra, Chandra K Singh, Mary Ann Ndiaye, Samantha Fedorowicz, Arielle Molot, Nihal Ahmad
Prostate cancer (PCa) is the most common non-skin cancer and the second leading cause of cancer-related deaths in American men. Due to its long latency period, PCa is considered as an ideal cancer type for chemopreventive interventions. Chemopreventive agents include various natural or synthetic agents that prevent or delay cancer development, progression and/or recurrence. Pre-clinical studies suggest that many natural products and dietary agents have chemopreventive properties. However, a limited number of these agents have been tested in clinical trials, with varying success...
February 19, 2018: Cancer Letters
Takako Miki, Masafumi Eguchi, Shamima Akter, Takeshi Kochi, Keisuke Kuwahara, Ikuko Kashino, Huanhuan Hu, Isamu Kabe, Norito Kawakami, Akiko Nanri, Tetsuya Mizoue
OBJECTIVE: We explored the association of 3-year adherence to a dietary pattern based on nutrients that may be related to mood with the development of depressive symptoms in Japanese employees. METHODS: Participants were 903 employees free from depressive symptoms at baseline and who attended the 3-year follow-up. Participants with depressive symptoms were defined as those with a score ≥16 on the Center for Epidemiologic Studies Depression Scale. Dietary patterns were derived using reduced-rank regression at baseline and at the 3-year follow-up survey using a validated, self-administered diet history questionnaire...
November 27, 2017: Nutrition
Tahereh Farkhondeh, Hanieh Shaterzadeh Yazdi, Saeed Samarghandian
The therapeutic strategies to manage neurodegenerative diseases remain limited and it is necessary to discover new agents for their prevention and control. Oxidative stress and inflammation play a main role in the pathogenesis of neurodegenerative diseases. Catechins, the major flavonoids in green tea, are powerful antioxidants and radical scavengers that possess the potential roles in the management of neurodegenerative diseases. Catechins modulate the cellular and molecular mechanisms through the inflammation-related NF-кB and the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathways...
February 18, 2018: Current Drug Discovery Technologies
Min Pi, Karan Kapoor, Ruisong Ye, Jeremy C Smith, Jerome Baudry, L Darryl Quarles
SCOPE: The molecular mechanisms whereby gallates in green tea exert metabolic effects are poorly understood. METHODS AND RESULTS: We found that GPRC6A, a multi-ligand sensing G-protein coupled receptor that regulates energy metabolism, sex hormone production and prostate cancer progression, is a target for gallates. Sodium gallate,1 gallic acid (GA) > ethyl gallate (EG) > octyl gallate (OG) dose dependently activated ERK in HEK-293 cells transfected with GPRC6A but not in non-transfected controls...
February 21, 2018: Molecular Nutrition & Food Research
Dan-Dan Tian, Joshua J Kellogg, Neşe Okut, Nicholas H Oberlies, Nadja B Cech, Danny D Shen, Jeannine S McCune, Mary F Paine
Green tea ( Camellia sinensis ) is a popular beverage worldwide, raising concern for adverse interactions when co-consumed with conventional drugs. Like many botanical natural products, green tea contains numerous polyphenolic constituents that undergo extensive glucuronidation. As such, the UDP-glucuronosyltransferases (UGTs), particularly intestinal UGTs, represent potential 'first-pass' targets for green tea-drug interactions. Candidate intestinal UGT inhibitors were identified using a biochemometrics approach, which combines bioassay and chemometric data...
February 21, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Neelam Rashid, Rodrigue Castro Gbedomon, Mushtaq Ahmad, Valère Kolawolé Salako, Muhammad Zafar, Khafsa Malik
BACKGROUND: Traditional knowledge about the use of medicinal plants for herbal drinks (HDs) is not well documented in the Azad Kashmir region despite their widespread use. This study highlights the taxonomic diversity and traditional knowledge on medicinal plants used for HDs while examining the diversity of diseases treated with HDs in the study area. METHODS: Individual discussions were conducted with 255 informants (84 women and 171 men). Data gathered included (i) informant age and gender, (ii) HD species and respective plant parts used, (iii) health disorders treated, and (iv) mode of preparation and utilizations...
February 21, 2018: Journal of Ethnobiology and Ethnomedicine
Sven Stadlbauer, Carmen Steinborn, Amy Klemd, Fumihiko Hattori, Ken Ohmori, Keisuke Suzuki, Roman Huber, Philipp Wolf, Carsten Gründemann
Among the known or suspected risk factors, inflammation plays an important role in infectious and non-infectious pathways leading to cancer. Green tea polyphenols have been associated with reducing inflammation and protection against carcinogenesis, especially in prostate cancer. While most of the research in this field, so far, has focussed on epigallocatechin-3- O -gallate only, we studied epicatechin-3- O -gallate, the second most abundant green tea polyphenol with essential therapeutic potential, to obtain a more detailed understanding of its anti-tumor and anti-inflammatory action...
February 21, 2018: Planta Medica
Catharina Scholl, Anna Lepper, Thorsten Lehr, Nina Hanke, Katharina Luise Schneider, Jürgen Brockmöller, Thomas Seufferlein, Julia Carolin Stingl
Green tea polyphenols may contribute to the prevention of cancer and other diseases. To learn more about the pharmacokinetics and interindividual variation of green tea polyphenols after oral intake in humans we performed a population nutrikinetic study of standardized green tea extract. 84 healthy participants took green tea extract capsules standardized to 150 mg epigallocatechin-gallate (EGCG) twice a day for 5 days. On day 5 catechin plasma concentrations were analyzed using non-compartmental and population pharmacokinetic methods...
2018: PloS One
Gargee Dhar Purkayastha, Preeti Mangar, Aniruddha Saha, Dipanwita Saha
The aim of the present study is to evaluate plant growth promoting and biocontrol efficacy of a Serratia marcescens strain ETR17 isolated from tea rhizosphere for the effective management of root rot disease in tea. Isolated bacterial culture ETR17 showed significant level of in vitro antagonism against nine different foliar and root pathogens of tea. The phenotypic and molecular characterization of ETR17 revealed the identity of the bacterium as Serratia marcescens. The bacterium was found to produce several hydrolytic enzymes like chitinase, protease, lipase, cellulase and plant growth promoting metabolites like IAA and siderophore...
2018: PloS One
Yuxiang Zhu, Aleksei N Marianov, Haimei Xu, Candace I Lang, Yijiao Jiang
This work for the first time reports visible-light active bare graphitic carbon nitride nanotubes (C3N4 NTs) for photocatalytic hydrogen generation, even in the absence of any co-catalyst. Upon uniform dispersion of the co-catalysts, Ag-Cu nanoparticles on the well-ordered bare C3N4 NTs, it exhibits twice the H2 evolution rate of the bare C3N4 NTs. The improved activity is attributed to its unique tubular nanostructure, strong metal-support interaction, and efficient photo-induced electron-hole separation compared to their bare and monometallic counterparts, evidenced by complementary characterization techniques...
February 21, 2018: ACS Applied Materials & Interfaces
N N A Zakaria, E J Okello, M-J Howes, M A Birch-Machin, A Bowman
The traditional practice of eating the flowers of Clitoria ternatea L. or drinking their infusion as herbal tea in some of the Asian countries is believed to promote a younger skin complexion and defend against skin aging. This study was conducted to investigate the protective effect of C. ternatea flower water extract (CTW) against hydrogen peroxide-induced cytotoxicity and ultraviolet (UV)-induced mitochondrial DNA (mtDNA) damage in human keratinocytes. The protective effect against hydrogen peroxide-induced cytotoxicity was determined by 3-(4, 5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium assay, and mtDNA damage induced by UV was determined by polymerase chain reaction...
February 21, 2018: Phytotherapy Research: PTR
Alexander E Khudozhitkov, Peter Stange, Anne-Marie Bonsa, Viviane Overbeck, Andreas Appelhagen, Alexander G Stepanov, Daniil I Kolokolov, Dietmar Paschek, Ralf Ludwig
The heterogeneity in dynamics has important consequences for understanding the viscosity, diffusion, ionic mobility, and the rates of chemical reactions in technology relevant systems such as polymers, metallic glasses, aqueous solutions, and inorganic materials. Herein, we study the spatial and dynamic heterogeneities in ionic liquids by means of solid state NMR spectroscopy. In the2 H spectra of the protic ionic liquid [TEA][OTf] we observe anisotropic and isotropic signals at the same time. The spectra measured below the melting temperature at 306 K could be simulated by a superposition of the solid and liquid line shapes, which provided the transition enthalpies between the rigid and mobile fractions...
February 21, 2018: Chemical Communications: Chem Comm
Moran Gotesman, Thanh-Trang T Vo, Lee-Or Herzog, Tiffeny Tea, Sharmila Mallya, Sarah K Tasian, Marina Konopleva, David A Fruman
High-risk subtypes of B-cell acute lymphoblastic leukemia (B-ALL) include Philadelphia chromosome-positive (Ph+) B-ALL driven by the BCR-ABL1 oncogene and a more recently identified subtype known as BCR-ABL -like or Ph-like B-ALL. A hallmark of both Ph+ and Ph-like B-ALL is constitutive activation of tyrosine kinase signaling that is potentially targetable with tyrosine kinase inhibitors (TKIs). B-ALL cells also receive extracellular signals from the microenvironment that can maintain proliferation and survival following treatment with TKIs...
January 19, 2018: Oncotarget
Munas M Muzrif, Dinusha Perera, Kumudu Wijewardena, Berit Schei, Katarina Swahnberg
OBJECTIVES: The aims of this study were to assess the regional differences in domestic violence among pregnant women in the capital district and in the tea plantation sector of Sri Lanka, to explore potential contributory factors and to assess whether healthcare workers addressed domestic violence and disclosure among survivors. DESIGN: A cross-sectional study was carried out using interviewer-administered Abuse Assessment Screen. SETTING: Fifty-seven antenatal clinic centres in the capital district and 30 in the tea plantation sector...
February 20, 2018: BMJ Open
Giovanna Calixto Andrade, Maria Laura da Costa Louzada, Catarina Machado Azeredo, Camila Zancheta Ricardo, Ana Paula Bortolleto Martins, Renata Bertazzi Levy
Considering the increased contribution of foods consumed outside home and their potential impact on diet, this study aims to identify eating out patterns and their association with nutritional dietary quality in Brazil. We used the Individual Food Intake Survey 2008-2009, conducted with 34,003 individuals aged 10 and up. We used factor analysis by principal component to identify out-of-home eating patterns and linear regression to explore the association between patterns scores and dietary quality. We identified three food patterns...
February 16, 2018: Nutrients
Haizhou Li, Min Li, Xinrui Yang, Xin Gui, Guofeng Chen, Jiuyun Chu, Xingwang He, Weitao Wang, Feng Han, Ping Li
Xiaguan Tuo Tea is largely consumed by the Chinese, but there is little research into the microbial diversity and component changes during the fermentation of this tea. In this study, we first used fluorescence in situ hybridization (FISH), next-generation sequencing (NGS) and chemical analysis methods to determine the microbial abundance and diversity and the chemical composition during fermentation. The FISH results showed that the total number of microorganisms ranges from 2.3×102 to 4.0×108 cells per gram of sample during fermentation and is mainly dominated by fungi...
2018: PloS One
Arno Greyling, Thalijn L C Wolters, David M de Bresser, Sean H P P Roerink, Niels P Riksen, Theo P Mulder, Matthew J Rowson, Maria T Hopman, Dick H J Thijssen
BACKGROUND & AIMS: Black tea is a main source of flavonoids in the Western diet and has been associated with reduced risk for cardiovascular disease, possibly through lowering blood pressure. These effects may be mediated through improving endothelial function of resistance arteries. The aim of this study was therefore to examine the acute impact of black tea on forearm resistance artery endothelial function in healthy, normotensive middle-aged subjects. METHODS: Twenty middle-aged men and women (age-range 45-75 years) were recruited into a double-blind, randomized, placebo-controlled crossover intervention study...
February 2018: Clinical Nutrition ESPEN
Xiaochen Wei, Yanmei Li, Meng Li, Chunyan Min, Hui Lu, Qirun Li, Jie Yuan, Chen Chen, Heran Li, Jian Zhang
BACKGROUND: Sauropus spatulifolius Beille is used to make "herbal tea" to prevent pneumonia, named "Long - Li - Ye" in China. This study aims to evaluate antioxidant activities in vitro and the protective effects of Long - Li - Ye on acute lung injury (ALI) induced by lipopolysaccharide (LPS). RESULTS: The supernatant after ethanol added into Long - Li - Ye water extraction (LLYCSL) and the resin eluting fraction of LLYCSL (LLY 40) showed strong antioxidant activities in vitro...
February 19, 2018: Journal of the Science of Food and Agriculture
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