Green Tea, The Functional Beverage Which Protects the Stomach Against Gastric Ulcer

Kyle J. Norton 

Green tea may have a therapeutic and positive effect in reducing the risk and treatment of gastric ulcer, some scientists suggested.

Gastric ulcers are sores that develop in the lining of the stomach as a result of bacterial infection or by overproduction of stomach acid. In other words, the gastric ulcer is a condition characterized open sores developed in the stomach, affecting the function of the stomach.

There are a set of factors that cause a gastric ulcer, including the infection of Helicobacter pylori (H. pylori), frequent use of  anti-inflammatory medicine, aging, smoking and excessive alcohol drinking  

Some researchers suggested that people who have radiation therapy for stomach cancer are also a higher risk to gastric ulcer development.

According to the study "Are genetic influences on peptic ulcer dependent or independent of genetic influences for Helicobacter pylori infection?" by the Veterans Affairs Medical Center and Baylor College of Medicine. "Genetic influences are of moderate importance for liability to peptic ulcer disease. Genetic influences for peptic ulcer are independent of genetic influences important for acquiring H. pylori infection".

If you are experiencing the symptoms of dull pain in the stomach. weight loss. refuse to eat because of pain. persistent gastrointestinal discomforts,  acid reflux, and heartburn, you may have a gastric ulcer. Please make sure that you check with your doctor to rule out the possibility.

Green tea, a precious drink processes numbers of health benefit known to almost everyone in Asia and Western world.

In the testing of healing of the hydroalcoholic extract including ethyl acetate fraction, (GEAc) and epigallocatechin gallate (EGCG) from green tea (GEt) in  the risk of gastric ulcer induced by application of 80 % acetic acid on serosal mucosa of rats, researchers showed that application of the extract after 7 days inhibited ulcer area  by exhibiting the antioxidant activity in reducing the  free radical overexpression.

Furthermore, application of  the hydroalcoholic extract also inhibited the oxidative stress that  cause gastric damage by injection of acetic acid by enhancing the production of antioxidant enzyme GSH, superoxide dismutase (SOD) and Glutathione-S-transferase (GST) enzymes and  ameliorating the production of lipid hydroperoxides (LOOH), a free radical in precipitated ulcer development by withdrawing electrons from the lipids in cell membranes.

Additional analysis also suggested that rats fed with green tea (GEt) improved the capacity of mucin content in gastric juice which has been found at reduced levels in rats with an ulcer after infecting of acetic acid.

Interestingly, injection of green tea (GEt) also decreased inflammatory infiltration of Myeloperoxidase (MPO) and N-acetylglucosaminidase (NAG) which has been used as biomarkers in the measurement of severity in some diseases including gastric ulcer.

Importantly, the application did not alter gastric acid secretion and induced acute toxicity.

Dr. Borato DG, the lead authors, after taking into account con-founders said, "GEt had a pronounced antiulcer effect, possibly through maintenance of mucin content and reduction of inflammation and oxidative stress".

Other polyphenol compound L-Theanine, isolated from green tea on NSAID (indomethacin)-induced maximum ulceration in the stomach on the third day at dose of 18 mg/kg inhibited the expression of the overproduction of reactive oxygen species (ROS) in the induction of lipid peroxidation, oxidation and protein carbonylation which is considered one of the most harmful irreversible oxidative protein that cause damage to the stomach.

The application also reduced expression of type 1 T helper (Th1) cells in the production of inflammatory cytokines, interferon-gamma, interleukin (IL)-2, and tumor necrosis factor (TNF)-beta, in the facilitated immune response in exhibiting inflammation in the acute stomach damage infection.

Additionally, L-Theanine also increased the levels of total thiol in the stomach tissue, mucin content in the gastric juice. The enhanced antioxidant levels not only improve digestion but also protect the stomach against damage by foreign substances.

Moreover, at a higher dose of 40 mg/kg b.w. At 10 mg/kg b.w., Dr. Chatterjee S, the lead author said, "L-theanine significantly alleviated the adverse oxidative effect of indomethacin through enhanced synthesis of PGE2 by modulation of cyclooxygenase-1 and 2 [COX-1 and COX-2] expression, Th1/Th2 cytokine balance, and restoration of cellular antioxidant status at the gastric ulcer margin".

Taken together, been tea with abundant bioactive polyphenols may be considered functional food for treatment of gastric ulcer without causing any adverse effects.

 However, high doses and long-term applications of green tea supplement were associated with acute liver toxicity.

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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
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 international journal Pharma and Bioscience, ISSN 0975-6299.

Sources
(1) Healing mechanisms of the hydroalcoholic extract and ethyl acetate fraction of green tea(Camellia sinensis (L.) Kuntze) on chronic gastric ulcers by Borato DG1, Scolaro CT2, Maria-Ferreira D1, da Silva LM1, de Souza LM2, Iacomini M2, Werner MF1, Baggio CH3. (PubMed)
(2) L-Theanine healed NSAID-induced gastric ulcer by modulating pro/antioxidant balance in gastric ulcer margin by Chatterjee S1, Chatterjee A, Roy S, Bera B, Bandyopadhyay SK. (PubMed)