AI Article Synopsis
Article Abstract
Background: Tea is an infusion of the leaves of the Camellia sinensis plant and is the most widely consumed beverage in the world after water. Green tea contains significant amounts of polyphenol catechins and represents a promising dietary component to maintain health and well-being. Epidemiological studies indicate that polyphenol intake may have potential health benefits, such as, reducing the incidence of coronary heart disease, diabetes and cancer. While bioavailability of green tea bioactives is fairly well understood, some gaps still remain to be filled, especially the identification and quantification of conjugated metabolites in plasma, such as, sulphated, glucuronidated or methylated compounds.
Aim Of The Study: In the present study, we aimed to quantify the appearance of green tea catechins in plasma with particular emphasis on their methylated forms.
Results: After feeding 400 mL of green tea, 1.25% infusion to 9 healthy subjects, we found significant amounts of EC, EGC and EGCg in plasma as expected. EGC was the most bioavailable catechin, and its methylated form (4'-O-Me-EGC) was also present in quantifiable amounts. Its kinetics followed that of its parent compound. However, the relative amount of the methylated form of EGC was lower than that of the parent compound, an important aspect which, in the literature, has been controversial so far. The quantitative results presented in our study were confirmed by co-chromatography and accurate mass analysis of the respective standards. We show that the relative abundance of 4'-O-Me-EGC is ~40% compared to the parent EGC.
Conclusion: 4'-O-Me-EGC is an important metabolite derived from catechin metabolism. Its presence in significant amounts should not be overlooked when assessing human bioavailability of green tea.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00394-010-0164-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Triboelectric Nanogenerator Based on CPDs-WO/MXene Bilayer Film for Triethylamine Sensing and Fish Meat Spoilage Detection.
Langmuir
December 2024
Institute of Novel Semiconductors, Shandong University, Jinan 250000, China.
With the increasing demand for food safety monitoring, the development of efficient, convenient, and green gas sensors has become a current research hotspot. Triboelectric nanogenerator (TENG) as a triethylamine sensor is a cutting-edge strategy for detection without the need for an additional power source. In this study, synthesized WO/MXene materials were prepared and bilayer thin films of carbon quantum dots (CPDs)-WO/MXene TENG.
View Article and Find Full Text PDFA Role for the Hippo/YAP1 Pathway in the Regulation of In Vitro Vasculogenic Mimicry in Glioblastoma Cells.
J Cell Mol Med
December 2024
Laboratoire d'Oncologie Moléculaire, Département de Chimie, Université du Québec à Montréal, Montreal, Quebec, Canada.
The Hippo pathway plays a tumorigenic role in highly angiogenic glioblastoma (GBM), whereas little is known about clinically relevant Hippo pathway inhibitors' ability to target adaptive mechanisms involved in GBM chemoresistance. Their molecular impact was investigated here in vitro against an alternative process to tumour angiogenesis termed vasculogenic mimicry (VM) in GBM-derived cell models. In silico analysis of the downstream Hippo signalling members YAP1, TAZ and TEAD1 transcript levels in low-grade glioblastoma (LGG) and GBM tumour tissues was performed using GEPIA.
View Article and Find Full Text PDFTea Consumption and Long-Term Mortality in Very Elderly Individuals With or Without Cardiovascular and Cerebrovascular Disease: Findings From a Sample of 19664 Chinese.
J Hum Nutr Diet
February 2025
State Key Laboratory of Cardiovascular Disease, Heart Failure Center, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Background: The association between tea consumption and mortality among very elderly individuals, with or without cardiovascular and cerebrovascular diseases (CCD), including stroke, remains unclear. This study hypothesised that a significant association exists.
Methods: We analysed data from two waves of the Chinese Longitudinal Healthy Longevity Survey (CLHLS), spanning 1998/2000 to 2018, with a maximum follow-up of 20 years.
Cup of Tea?
Acad Med
January 2025
S.E. Smith is a general practitioner and educational coordinator, Scottish Centre for Simulation and Clinical Human Factors, NHS Forth Valley, Larbert, United Kingdom; telephone: +44 1324 567 412; email: ORCID: http://orcid.org/0000-0003-1892-6365.
Large-scale prediction of biological activities with Active-IT system.
Biomed Khim
December 2024
Chemoinformatics Group - NEQUIM, Departamento de Quimica, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil.
Traditional testing methods in pharmaceutical development can be time-consuming and costly, but in silico evaluation tools can offer a solution. Our in-house Active-IT system, a Ligand-Based Virtual Screening (LBVS) tool, was developed to predict the biological and pharmacological activities of small organic molecules. It includes four independent modules for generating molecular descriptors (3D-Pharma), machine learning modeling (ExCVBA), a database of bioactivity models, and a prediction module.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!