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https://www.readbyqxmd.com/read/28636413/tea-consumption-is-associated-with-cognitive-impairment-in-older-chinese-adults
#1
Ying-Jie Gu, Chun-Hong He, Su Li, Shu-Yi Zhang, Sheng-Yu Duan, Hong-Peng Sun, Yue-Ping Shen, Yong Xu, Jie-Yun Yin, Chen-Wei Pan
OBJECTIVE: To explore the association between tea consumption and cognitive impairment (CoI). METHODS: 4579 adults (≥60 years) from the Weitang Geratric Diseases Study were assessed for characteristics of tea consumption and cognitive function by administering questionnaires and the Abbreviated Mental Test (AMT), respectively. We divided the subjects into normal cognitive function group (AMT score ≥8) and CoI group (AMT score ≤7).   The association between tea consumption and risk of CoI was determined by logistic regression models...
June 21, 2017: Aging & Mental Health
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
#2
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/28635261/novel-protein-based-solid-biosensor-for-determining-pro-oxidant-activity-of-phenolic-compounds
#3
Esin Akyüz, Kevser Sözgen Başkan, Esma Tütem, Reşat Apak
To develop a protein‒based biosensor measuring the pro-oxidant activities of phenolic compounds, egg white proteins were precipitated with calcium chloride to obtain an insoluble calcium proteinate complex. This biosensor was used for the determination of Cu(II)‒induced pro-oxidant activity of antioxidants such as gallic acid, catechin, epicatechin, quercetin, chlorogenic acid and myricetin, and ascorbic acid. This assay involved the reduction of Cu(II) ions to Cu(I) by antioxidant compounds (simultaneously giving rise to reactive oxygen species) and binding of the formed Cu(I) to the solid biosensor...
June 21, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28635075/salts-influence-cathechins-and-flavonoids-encapsulation-in-liposomes-a-molecular-dynamics-investigation
#4
Emiliano Laudadio, Giovanna Mobbili, Cristina Minnelli, Luca Massaccesi, Roberta Galeazzi
Cathechins and flavonoids are responsible of numerous health benefits. Two of the most representatives' compounds for their antioxidant and therapeutic effects are Epigallocatechin 3-Gallate (EGCG), from green tea extracts, and morelloflavone (MF), from Garcinia dulcis. Here we explore, by atomistic Molecular Dynamics simulations, how EGCG and MF interact with lipid bilayers and we show the salts' influence on their encapsulation degree in neutral liposomes. As a result, we found out that EGCGs naturally bind to the hydrophilic regions of phospholipids, positioning themselves mostly at the interface between water and lipid phases...
June 21, 2017: Molecular Informatics
https://www.readbyqxmd.com/read/28634477/metabolomic-analysis-and-mode-of-action-of-metabolites-of-tea-tree-oil-involved-in-the-suppression-of-botrytis-cinerea
#5
Jiayu Xu, Xingfeng Shao, Yonghua Li, Yingying Wei, Feng Xu, Hongfei Wang
Tea tree oil (TTO), a volatile essential oil, has been widely used as an antimicrobial agent. However, the mechanism underlying TTO antifungal activity is not fully understood. In this study, a comprehensive metabolomics survey was undertaken to identify changes in metabolite production in Botrytis cinerea cells treated with TTO. Significant differences in 91 metabolites were observed, including 8 upregulated and 83 downregulated metabolites in TTO-treated cells. The results indicate that TTO inhibits primary metabolic pathways through the suppression of the tricarboxylic acid (TCA) cycle and fatty acid metabolism...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28633866/tea-consumption-may-decrease-the-risk-of-osteoporosis-an-updated-meta-analysis-of-observational-studies
#6
REVIEW
Ming Guo, Hua Qu, Lin Xu, Da-Zhuo Shi
Several epidemiological investigations have evaluated the correlation between tea consumption and risk of osteoporosis, but the results are inconsistent. Therefore, we conducted an updated meta-analysis of observational studies to assess this association. We searched for all relevant studies including cohort, cross-sectional, and case-control studies published from database inception to July 15, 2016, using MEDLINE EMBASE, and Cochrane Library. Polled odds ratios (ORs) were calculated using the random-effect model...
June 2017: Nutrition Research
https://www.readbyqxmd.com/read/28633584/variation-of-alkaloid-contents-and-antimicrobial-activities-of-papaver-rhoeas-l-growing-in-turkey-and-northern-cyprus
#7
İlkcan Çoban, Gizem Gülsoy Toplan, Berna Özbek, Çağlayan Unsal Gürer, Günay Sarıyar
CONTEXT: Papaver rhoeas L. (Papaveraceae) corn poppy, widely distributed in Turkey, is used to make a cough syrup for children, as a tea for disturbed sleep, for pain relief and as a sedative in folk medicine. OBJECTIVE: Samples of P. rhoeas collected from eight different locations in Turkey and three from northern Cyprus were investigated for their alkaloid content and screened for their antimicrobial activities. MATERIALS AND METHODS: From the aerial parts of P...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28633386/oral-administration-of-tea-saponins-to-relive-oxidative-stress-and-immune-suppression-in-chickens
#8
X Chi, S Bi, W Xu, Y Zhang, S Liang, S Hu
The present study was designed to evaluate the effects of tea saponins on oxidative stress induced by cyclophosphamide in chickens. One hundred twenty chickens were randomly divided into 5 groups. Groups 3 to 4 received intramuscular injection of cyclophosphamide to induce oxidative stress and immunosuppression. After that, groups 2 and 4 were orally administered tea saponins in drinking water for 7 d. Then, groups 1 to 4 were immunized with a live, bivalent vaccine of Newcastle disease virus and infectious bronchitis virus...
June 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/28633061/1-4-anthraquinone-a-new-useful-pre-column-reagent-for-the-determination-of-n-acetylcysteine-and-captopril-in-pharmaceuticals-by-high-performance-liquid-chromatography
#9
Rita Gatti, Rita Morigi
1,4-Anthraquinone (ANQ) is proposed as a novel pre-column reagent for high performance liquid chromatography (HPLC) determination of N-acetylcysteine (NAC) and captopril (CAP) in pharmaceutical formulations. The derivatization reactions were carried out at room temperature: NAC at pH 8 for 1min, while CAP at pH 7.5 for 20min. Both reactions reached completeness at a reagent to thiol molar ratio of about 2.5. The synthesised derivatives were characterized by (1)H NMR and IR. The chromatographic separations were performed on a C18 Phenomenex Synergi Fusion 4μm (250mm×4...
June 15, 2017: Journal of Pharmaceutical and Biomedical Analysis
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
#10
David C Nieman, Sivapriya Ramamoorthy, Colin D Kay, Courtney L Goodman, Christopher R Capps, Zach L Shue, Nicole Heyl, Mary H Grace
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/m2) were randomized to flavonoid (F) or placebo (P) groups for 12 weeks, with blood and 24-h urine samples collected pre-study, 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 20, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28631582/effect-of-green-tea-extract-supplementation-on-glycogen-replenishment-in-exercised-human-skeletal-muscle
#11
Tsen-Wei Tsai, Chia-Chen Chang, Su-Fen Liao, Yi-Hung Liao, Chien-Wen Hou, Jung-Piao Tsao, I-Shiung Cheng
The purpose of this study was to investigate the effects of 8-week green tea extract (GTE) supplementation on promoting postexercise muscle glycogen resynthesis and systemic energy substrate utilisation in young college students. A total of eight healthy male participants (age: 22·0 (se 1·0) years, BMI: 24·2 (se 0·7) kg/m2, VO2max: 43·2 (se 2·4) ml/kg per min) participated in this study. GTE (500 mg/d for 8 weeks) was compared with placebo in participants in a double-blind/placebo-controlled and crossover study design with an 8-week washout period...
June 20, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28630784/elemental-characterization-of-romanian-crop-medicinal-plants-by-neutron-activation-analysis
#12
Daniela Haidu, Dénes Párkányi, Radu Ioan Moldovan, Cecilia Savii, Iulia Pinzaru, Cristina Dehelean, Ludovic Kurunczi
The metallic elements concentrations of medicinal plants (coriander, dill, Echinacea, lavender, chamomile, mint, and plantain, used for phytopharmaceutical products), cultivated in unpolluted region, were analyzed by neutron activation analysis. The essential nutrients, macro-, micro-, and trace elements (K, Ca, Mg, Na, Fe, Mn, Rb, Sr, and Zn), potentially toxic elements (Al, As, Ba, Co, Sb, Cr, and V), and rare earth elements were monitored and were compared with those presented in the literature. An estimation of their contributions to intake and toxicity for a person was made, which revealed that (a) teas prepared from the examined plants represent useful contribution to the food provided intake of three essential macronutrients (K, Ca, and Mg); (b) the Cu, Mn, Rb, Sr, Zn, and rare earths levels are normal or low; (c) the quantities of As, Ba, Co, Sb, Cr, and V do not represent toxicological concerns; (d) the examination of the estimated Al and Fe quantities recovered in infusions in the conditions of usual daily tea consumption is below the Tolerable Daily Intake values...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28630699/nutritional-correlates-of-monetary-diet-cost-in-young-middle-aged-and-older-japanese-women
#13
Keiko Shiraki, Kentaro Murakami, Hitomi Okubo, M Barbara E Livingstone, Satomi Kobayashi, Hitomi Suga, Satoshi Sasaki
Studies in many Western countries have consistently shown that monetary diet cost is positively associated with diet quality, but this may not necessarily be the case in Japan. This cross-sectional study examined the nutritional correlates of monetary diet cost among 3963 young (all 18 years old), 3800 middle-aged (mean age 48 years) and 2211 older (mean age 74 years) Japanese women. Dietary intakes were assessed using a comprehensive self-administered diet history questionnaire for young and middle-aged women and a brief self-administered diet history questionnaire for older women...
2017: Journal of Nutritional Science
https://www.readbyqxmd.com/read/28630625/quantification-of-antioxidant-phenolic-compounds-in-a-new-chrysanthemum-cultivar-by-high-performance-liquid-chromatography-with-diode-array-detection-and-electrospray-ionization-mass-spectrometry
#14
Ah-Reum Han, Hyo Young Kim, Yangkang So, Bomi Nam, Ik-Soo Lee, Joo-Won Nam, Yeong Deuk Jo, Sang Hoon Kim, Jin-Baek Kim, Si-Yong Kang, Chang Hyun Jin
The flowers of Chrysanthemum morifolium Ramat. have been used as an herbal tea and in traditional medicine, and the plant has been developed to produce horticultural cultivars of various colors and shapes. In this study, a new chrysanthemum cultivar with dark purple petals (C. morifolium cv. ARTI-Dark Chocolate; ADC) was developed by radiation-induced mutation breeding of its original cultivar with purple striped white petals (C. morifolium cv. Noble Wine, NW). The phenolic profile and antioxidant property of ADC were investigated and compared with NW and the commercially available medicinal herb, C...
2017: International Journal of Analytical Chemistry
https://www.readbyqxmd.com/read/28628680/current-perspectives-among-u-s-dermatologists-on-chemoprevention-of-nonmelanoma-skin-cancer-a-survey-based-study
#15
Brittany Oliver, Serena Durrani, Joel L Cohen, Adam J Friedman
<p>Introduction: Nonmelanoma skin cancer (NMSC) is the most common malignancy in the US Primary prevention of NMSC with physical photoprotective measures are often not sufficient to impact skin cancer incidence in high-risk individuals. Chemoprevention is the use of agents to prevent, suppress, and reverse carcinogenic progression. Many agents have been investigated, but preclinical and clinical studies are often inconsistent.</p> <p>Methods: A cross-sectional study was designed to assess current practices, perceptions, and general knowledge of U...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28628342/effect-of-green-tea-polyphenol-epigallocatechin-3-gallate-on-the-aggregation-of-%C3%AE-a-66-80-peptide-a-major-fragment-of-%C3%AE-a-crystallin-involved-in-cataract-development
#16
Vijay Kumar, Shalini Gour, Ocan Simon Peter, Shraddha Gandhi, Pankaj Goyal, Janmejay Pandey, Ram Swaroop Harsolia, Jay Kant Yadav
PURPOSE: Crystallin is a major protein present in eye lens. Peptide fragment αA(66-80) derived from αA-crystallin possesses high aggregation propensity and forms amyloid-like structures. αA(66-80) aggregates are known to interact with soluble crystallins and destabilize native structures that subsequently undergo aggregation. Crystallin aggregation in eye lens leads to reduction in lens opacity, the condition generally referred to as a cataract. Thus, αA(66-80) aggregation appears to be an important event during cataract development, and therefore, inhibition of αA(66-80) aggregation may be an attractive strategy to intervene in cataract development...
June 19, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28628030/a-novel-flexible-cuff-like-microelectrode-for-dual-purpose-acute-and-chronic-electrical-interfacing-with-the-mouse-cervical-vagus-nerve
#17
April Shawn Caravaca, Téa Tsaava, Laura Goldman, Harold Silverman, Gary Riggott, Sangeeta Chavan, Chad Bouton, Kevin J Tracey, Robert Desimone, Ed Boyden, Harbaljit Singh Sohal, Peder S Olofsson
OBJECTIVE: Neural reflexes establish homeostasis and regulate the immune system. Advances in bioelectronic medicine indicate that electrical stimulation of the vagus nerve can be used to treat inflammatory disease, yet the understanding of neural signals that regulate inflammation is incomplete. Current interfaces with the vagus nerve do not permit effective chronic stimulation or recording in mouse models, which is vital to studying the molecular and neurophysiological mechanisms that control inflammation homeostasis in health and disease...
June 19, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28626103/-study-on-lifestyle-in-patients-with-gastroesophageal-%C3%A2-reflux-disease
#18
Lingzhi Yuan, Dan Tang, Jin Peng, Nanfang Qu, Chun Yue, Fen Wang
To investigate the correlation between certain unhealthy lifestyles and the incidence of gastroesophageal reflux disease (GERD), thus to provide the lifestyle guidelines for GERD patients.
 Methods: Retrospective study were conducted for 402 GERD and 276 non-GERD out-patients in Department of Gastroenterology, Third Xiangya Hospital, Central South University from August, 2014 to August, 2015 based on questionnaire survey, then the correlation of unhealthy lifestyles with GERD were analyzed.
 Results: The top 10 common symptoms for GERD were as follows: reflux, acid regurgitation, postprandial fullness, heartburn, swallow obstruction or pain, epigastric burning sensation, paraesthesia pharynges, poststernal pain, chronic laryngopharyngitis, and chronic cough...
May 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28625892/consumers-acceptance-of-medicinal-herbs-an-application-of-the-technology-acceptance-model-tam
#19
Nargesh Khatun Jokar, Seyyed Ali Noorhosseini, Mohammad Sadegh Allahyari, Christos A Damalas
ETHNOPHARMACOLOGICAL RELEVANCE: The shift in consumers' preferences from synthetic to 'natural' products has led to a resurgence of interest in medicinal plants, particularly in developing countries. However, research data about consumers' preferences for particular products is hard to find. AIMS AND OBJECTIVES: The main objective of this study was to contribute to the general understanding of consumers' intention for selecting medicinal herbs for consumption. MATERIALS AND METHODS: Factors underpinning consumers' acceptance of medicinal herbs were studied with the technology acceptance model (TAM) in Rasht City of Iran using a structured questionnaire...
June 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28624083/effect-of-the-type-of-brewing-water-on-the-chemical-composition-sensory-quality-and-antioxidant-capacity-of-chinese-teas
#20
Yong-Quan Xu, Chun Zou, Ying Gao, Jian-Xin Chen, Fang Wang, Gen-Sheng Chen, Jun-Feng Yin
The physicochemical characteristics, sensory quality, and antioxidant activity of tea infusions prepared with purified water (PW), mineral water (MW), mountain spring water (MSW), and tap water (TW) from Hangzhou were investigated. The results showed that the taste quality, catechin concentration, and antioxidant capacity of green, oolong, and black tea infusions prepared using MW and TW were significantly lower than those prepared using PW. Extraction of catechins and caffeine was reduced with high-conductivity water, while high pH influenced the stability of catechins...
December 1, 2017: Food Chemistry
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