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.
Bladder cancer is medical condition characterized by irregular cell growth in the issues of bladder. At the later stage, the cancerous cell may travel a distance away to invade other healthy tissues and organs.
According to statistic provided by cancer.net, 90% of people with bladder cancer are older than 55, and the average age of people diagnosed with bladder cancer is 73
In T24 human bladder cancer cell line, application of the chemopreventive/antiproliferative potential of (-)-epigallocatechin gallate (EGCG, the major phytochemical in green tea) induced anti malignant cell proliferation by modulating the expression of phosphatidylinositol 3' kinase/Akt in activated Bcl-2 family proteins with function in regulation of cell death, thus enhancing apoptosis of T24 bladder cancer cell line in dose- and time-dependent manner.
In C3H/HeN mice subcutaneously implanted with MBT-2 murine bladder tumor cells, administration of EGCGs physically attached onto the surface of nanogold particles pNG(EGCG-adsorbed pNG) exerted a significant anti cancer proliferation through induction of apoptosis.
This action of anti cancer effect was attributed to mechanism of EGCG-pNG in activation of caspases which plays an important role in induced cell apoptosis and inflammation through Bcl-family proteins with function in control apoptosis by activating caspase proteases in the governing the space between outer and inner mitochondrial membrane.
Under stress, the mitochondrial pathway or the intrinsic pathway is activated depending to the release of proteins from the intermembrane space of mitochondria.
Caspase cascade, a family protease enzymes with function in programmed cell death and inflammation.
Additionally, injecting EGCG-pNG directly into the tumor site inhibited tumor expansion through ameliorated the function of vascular endothelial growth factor (VEGF) in stimulated formation of new blood vessel in provided nutrients and oxygen for survival of cancer site in compared to
oral administration of EGCG in stimulated immune function in suppression of cancer progression.
Based on information collected,, the prepared EGCG-pNG was more effective than free EGCG in inhibiting bladder tumor in model mice.
More interestingly, bladder tumor induced by N-butyl-(-4-hydroxybutyl) nitrosaminre (BBN) 0.05% solution on 8 week-old female C3H/He mice for 14 or 24 weeks on treatment with or without green tea polyphenols (GTP) expressed a significant lower rate of tumor invasive frequency of 23.8%; in group treated with both GTP and BBN in compared to 65.2% in group treated with BBN alone.
Taken together, green tea extract polyphenols may be considered as adjunct therapy for reduced risk and used combination with standard medicine for treatment of bladder cancer.
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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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Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.
(1) A component of green tea, (-)-epigallocatechin-3-gallate, promotes apoptosis in T24 human bladder cancer cells via modulation of the PI3K/Akt pathway and Bcl-2 family proteins by Qin J1, Xie LP, Zheng XY, Wang YB, Bai Y, Shen HF, Li LC, Dahiya R.(PubMed)
(2) The treatment of bladder cancer in a mouse model by epigallocatechin-3-gallate-gold nanoparticles by Hsieh DS1, Wang H, Tan SW, Huang YH, Tsai CY, Yeh MK, Wu CJ.(PubMed)
(3) Green tea polyphenol suppresses tumor invasion and angiogenesis in N-butyl-(-4-hydroxybutyl) nitrosamine-induced bladder cancer by Sagara Y1, Miyata Y, Nomata K, Hayashi T, Kanetake H.(PubMed)