Green tea, a precious drink processes numbers of health benefit known to almost everyone in Asia and Western world. However, as yin in nature herbal medicine or food, long term injection of large amounts may obstruct the balance of yin-yang, induced "yin excessive syndrome" or "yang vacuity syndrome" including weaken immunity and painful case of GERD,... according to traditional Chinese medicine's Yin-Yang theory.
Osteosarcoma is a medical condition of bone cancer characterized by producing immature bone and occurred mostly in children and young adults between the ages of 10 and 30.
According to the study in investigation of the effects of Epigallocatechin-3-gallate (EGCG), in reduced risk of osteosarcoma expression in compared to miR-126 in the proliferation, invasion, migration, and chemotherapeutics resistance in cancer, application of Epigallocatechin-3-gallate (EGCG)
1. Exerted a significant effect in suppresses proliferation of human cell line osteosarcoma MG63 and U2OS cells in a concentration-dependent and time-dependent manner
2. Inhibited cancer cell line at the concentration of 0.05 g/L on U2OS cells were equivalent to 20 μM cisplatin (DDP)
In compared to green tea extract induced cell death by interfering in cell cycle arrest, miR-126, the chemo suppressor drug induced apoptosis and inhibited proliferation in U2OS cell line but without significant effects on phase 1 of cancerous cell cycle division.
More interestingly, in the study of the effects of Se-enriched Ziyang green tea, containing chemical compound mannose, rhamnose and fucose in anti tumor activity on human osteosarcoma U-2 OS cells in vitro and in vivo, researchers found that Se-ZYTP at concentration of 25, 50, 100 and 200 μg/ml exetred a significantly inhibition of proliferation of human osteosarcoma U-2 OS cells in a concentration-dependent fashion.
In deed, the anti osteosarcoma activities of Se-enriched Ziyang green tea may be attributed to the stimulation in increased pro-apoptotic protein Bax expression(upregulated by the tumor suppressor protein p53 in induced apoptosis) and decreased expression levels of anti-apoptotic protein Bcl-2(regulator proteins that regulate cell death) and NG2(involved cell survival, migration and angiogenesis), some researchers suggested.
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Kyle J. Norton (Scholar, Master of Nutrients, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
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Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.
(1) Overexpression of miR-126 sensitizes osteosarcoma cells to apoptosis induced by epigallocatechin-3-gallate by Jiang L, Tao C, He A, He X1.(PubMed)
92) Green tea polyphenol EGCG suppresses osteosarcoma cell growth through upregulating miR-1 by Zhu K1, Wang W2.(PubMed)
(3) Tumoricidal effects of a selenium (Se)-polysaccharide from Ziyang green tea on human osteosarcoma U-2 OS cells by Wang Y1, Chen J, Zhang D, Zhang Y, Wen Y, Li L, Zheng L.(PubMed)