| |
Preventive effects of black tea theaflavins against mouse type IV allergy.
J Sci Food Agric. 2010 Jul 1.
Yoshino K, et al
Department of Chemistry and Biochemistry, Numazu National College of Technology, Shizuoka 410-8501, Japan.
Abstract
BACKGROUND: Tea (Camellia sinensis L.), one of the most popular beverages, contains various beneficial constituents.
We investigated the preventive effects of black tea theaflavins, theaflavin-3-gallate (3-TF) and theaflavin-3,3'-digallate (TFDG), on oxazolone-induced type IV allergy in male ICR mice.
RESULTS: Percutaneous administration of both 3-TF and TFDG at 0.2 mg ear(-1) showed significant preventive effects against mouse type IV allergy. Oral administration of these agents at 50 mg kg(-1) body weight also showed significant preventive effects against mouse type IV allergy.
Oral administration of 3-TF and TFDG at a dose of 50 mg kg(-1) body weight prevented the increases in levels of some proinflammatory cytokines, interleukin-12 (IL-12), interferon-gamma (IFN-gamma), and tumour necrosis factor-alpha (TNF-alpha), in the sera and/or ears of mice with type IV allergy.
Lowering of serum antioxidant activity in mice with allergic symptoms was also prevented by oral administration of these theaflavins at a dose of 50 mg kg(-1) body weight.
The anti-allergic mechanisms of action of theaflavins involve inhibition of the fluctuations of cytokines and maintenance of antioxidant status in allergic mice.
CONCLUSION: These results suggest that the theaflavins as well as catechins contribute to the anti-allergic effects of black tea
|
Green tea and cancer prevention.
Nutr Cancer. 2010 Oct;62(7):931-7.
Honest Tea Press Releases
Herbal teas, including all the teas discussed in these pages, should not be consumed by persons who are pregnant or nursing, unless approved by your health care provider. Herbal teas may vary in their ingredients and some herbal tea components may interfere with other important medications. For example, there is some concern that green tea ingestion during pregnancy may reduce the absorption of folate, an important nutrient in fetal nervous system development.
keywords and tags:
tea, green tea, natural tea, red tea, african tea, white tea, chinese tea, black tea, tea benefits, green tea skin care products,green tea and weight loss, Chamomile Tea, herbal teas, mint tea, oolong tea, natural tea news, black dragon tea, hibiscus tea, new tea products, unsweetened tea, tazo tea, Pu-ehr tea, Earl Grey Tea,
Masala Indian Spiced Tea, Moroccan Tea, Mint Tea, Lemongrass Tea, Yerba Tea, Kombucha Tea
|
|
|
Learn about
Green Tea
Black Tea
Herbal Teas Pu-ehr Tea
Red Tea Chamomile Tea
Raspberry Tea |
White Tea
Tea Skin Care Products
At AllNaturalTea.com |
|
|
