Green tea may have a sustainable and positive effect in reduced risk and treatment of liver cancer, Some studies suggested.
Liver cancer is a medical condition caused by cell growth disorderly and uncontrollably in the liver tissues. At the later stage, the cancerous cells may travel a distance away to infect other healthy organs and tissues.
In the review of medical literature published online, green tea bioactive phytochemicals such as Epigallocatechin gallate (EGCG) and Theaflavin (TF), in the prevention and treatment of liver cancer have been postulated by several mechanisms.
In liver cancer, animal model induced by chronic exposure to N-nitroso diethylamine (NDEA), a carcinogenic and mutagenic organic compound, application of green tea bioactive compounds Epigallocatechin gallate (EGCG) and Theaflavin (TF) demonstrated a strong effect in reduced initiation of cancer formation and potential chemopreventive effect in pre and post-treatment of the injected animal.
Further observation showed that EGCG/TF action in restraining the overexpression of liver cancer was also found to modulate similarly to those of CD44-specific cell membrane binding combined with near-infrared irradiation in the induction of cellular apoptosis.
High CD44-positive expression is found to associate with acute cancer cell killing.
The restriction processes of EGCG/TF in modification of onset of liver cancer development was also found to modify multiple biogenesis involved in maintaining a relatively stable equilibrium in organs tissues(self-renewal Wnt/β-catenin, Hh/Gli1 pathways) in gene with the implication of cell cycle progression, apoptosis and cellular transformation and cell differentiation and proliferation(Cyclin D1, cMyc, and EGFR) and tumor suppressor (E-cadherin) during the carcinogenesis processes.
The additional illustration also indicated that the therapeutic efficacy of tea polyphenols epigallocatechin gallate (EGCG) and theaflavin (TF) also regulated the expression of the protein of cell differentiation, polarity, and proliferation(the self-renewal Wnt and Hedgehog (Hh) pathways).during CCl4/N-nitosodiethylamine-induced mouse liver carcinogenesis.
Application of green tea bioactive tea polyphenols epigallocatechin gallate (EGCG) and theaflavin (TF) induced chemopreventive potential in maintaining cell integrity at the 30 weeks of CCl4/N-nitosodiethylamine application.
Continuous administration of EGCG/TF exerted a strong impact in reduced proliferation and increased apoptosis, as well as the decreased function of hepatic progenitor cells (HPCs) in the participated restoration of the cancerous liver tissue, and population with cancer, stem cell-like characteristics in liver carcinoma observed by AFP and CD44 expression.in CCl4/N-nitosodiethylamine-induced mouse liver carcinogenesis.
More interestingly, also during the restriction processes of EGCG/TF, the bioactive compounds also modulated the expression of tumor progression to a more invasive phenotype(phospho-β-catenin-Y-654), tumor suppressor(β-catenin), the proliferation, migration, and invasion of liver cancer gene(sFRP1 ) and gene in control tumor suppressor(β-catenin).
In other words, green tea EGCG/TF inhibited the contaminated cells inflicted by injection of CCl4/N-nitosodiethylamine to prevent the initiation of liver cancer through modulation of certain gene expressions involved in liver cancer progression.
In short, the inhibition of liver carcinogenesis by EGCG/TF was attributed to a reduction in hepatocyte progenitor cell and stem cell population in restored liver cancerous cell damage through various mechanisms indicated above.
Taken together, green tea bioactive ingredients epigallocatechin gallate (EGCG) and theaflavin (TF) may be useful secondary preventive agents for targeting liver cancer in combination with standard chemotherapies.
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Author Biography
Kyle J. Norton, Master of Nutrition
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the Karate GB Daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as the international journal Pharma and Bio science, ISSN 0975-6299.
Sources
(1) Tea polyphenols EGCG and TF restrict tongue and liver carcinogenesis simultaneously induced by N-nitrosodiethylamine in mice by Sur S1, Pal D2, Roy R2, Barua A2, Roy A3, Saha P2, Panda CK4.(PubMed)
(2) Tea polyphenols epigallocatechin gallete and theaflavin restrict mouse liver carcinogenesis through modulation of self-renewal Wnt and hedgehog pathways by Sur S1, Pal D2, Mandal S3, Roy A4, Panda CK5.(PubMed)
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