Chá verde e efeitos à saúde – Artigo 11
Long-Term Green Tea Supplementation Does Not Change the Human Gut Microbiota
Background
Green tea catechins may play a role in body weight regulation through interactions with the gut microbiota.
Aim We examined whether green tea supplementation for 12 weeks induces changes in composition of the human gut microbiota.
Methods
58 Caucasian men and women were included in a randomized, placebo-controlled design. For 12 weeks, subjects consumed either green tea (>0.56 g/d epigallocatechin-gallate + 0.28*0.45 g/d caffeine) or placebo capsules. Fecal samples were collected twice ...
Chá verde e efeitos à saúde – Artigo 10
Long-Term Green Tea Extract Supplementation Does Not Affect Fat Absorption, Resting Energy Expenditure, and Body Composition in Adults
Background: Green tea (GT) extract may play a role in body weight regulation. Suggested mechanisms are decreased fat
absorption and increased energy expenditure.
Objective:We examined whether GT supplementation for 12 wk has beneficial effects on weight control via a reduction in
dietary lipid absorption as well as an increase in resting energy expenditure (REE).
Methods: Sixty Caucasian men and women [BMI (in kg/m2): 18–25 or >25; age: 18–50 y] ...
Chá verde e efeitos à saúde – Artigo 09
Green tea influences intestinal assimilation of lipids in humans: a pilot study
OBJECTIVE: Many data show that green tea (GT) consumption has a beneficial effect on human health, including antiinflammatory,
antibacterial and anticarcinogenic activities. However, there are no data on the effect of long-term GT intake on lipid assimilation
not related to luminal processes. Therefore, in the present study, we aimed to assess the impact of a three-month diet enriched in green tea
extract (GTE) on lipid digestion and absorption in obese humans with metabolic syndrome.
PATIENTS AND ...
Chá verde e efeitos à saúde – Artigo 08
Green tea extract and its major constituent epigallocatechin-3-gallate inhibit growth and halitosis-related properties of Solobacterium moorei
that has been associated with halitosis. The aim of this study was to investigate the effects of green tea extract and its
major constituent epigallocatechin-3-gallate (EGCG) on growth and several halitosis-related properties of S. moorei.
Methods: A microplate dilution assay was used to determine the antibacterial activity of green tea extract and EGCG
against S. moorei. Their effects on bacterial cell membrane integrity were investigated by ...
Chá verde e efeitos à saúde – Artigo 06
Epigallocatechin Gallate Nanodelivery Systems for Cancer Therapy
Cancer is one of the leading causes of morbidity and mortality all over the world. Conventional treatments, such as chemotherapy, are generally expensive, highly toxic and lack efficiency. Cancer chemoprevention using phytochemicals is emerging as a promising approach
for the treatment of early carcinogenic processes. ()-Epigallocatechin-3-gallate (EGCG) is the major bioactive constituent in green tea with numerous health benefits including anti-cancer activity, which has been intensively studied. Besides its potential ...
Chá verde e efeitos à saúde – Artigo 05
Epigallocatechin-3-gallate (EGCG) Suppresses the Trafficking of
Lymphocytes to Epidermal Melanocytes via Inhibition of JAK2:
Its Implication for Vitiligo Treatment
Vitiligo is an inflammatory skin disorder in which activated T cells play an important role in its onset and progression. Epigallocatechin-3-gallate (EGCG), the major chemical constituent of green tea, exhibits remarkable anti-oxidative and anti-inflammatory properties. EGCG administration has been confirmed to decrease the risk of vitiligo; however, the underlying mechanism is undetermined. In this stu dy, we proved that ...
Chá verde e efeitos à saúde – Artigo 04
Effect of green tea extract on bonding durability of an etch-and-rinse adhesive system to cariesaffected dentin
Objective: Green tea extract has been advocated as a matrix metalloproteinase (MMP) inhibitor; however, its effect on bond durability to caries-affected dentin has never been reported. Thus, the aim of this in vitro study was to evaluate the effect of two MMP inhibitors (2% chlorhexidine and 2% green tea extract), applied after acid etching, on bond durability of an etch-and-rinse adhesive system to caries-affected dentin. Material and Methods: Occlusal enamel was removed from ...
Chá verde e efeitos à saúde – Artigo 03
Dissipation Pattern, Processing Factors, and Safety Evaluation for Dimethoate and Its Metabolite (Omethoate) in Tea (Camellia
Sinensis)
Residue levels of dimethoate and its oxon metabolite (omethoate) during tea planting, manufacturing, and brewing were investigated using a modified QuEChERS sample preparation and gas chromatography. Dissipation of dimethoate and its metabolite in tea plantation followed the first-order kinetic with a half-life of 1.08–1.27 d. Tea manufacturing has positive effects on dimethoate dissipation. Processing factors of dimethoate are in the range of ...
