生物谷報(bào)道： 在美國(guó)加州阿那罕姆市 (Anaheim)所舉行的美國(guó)泌尿醫(yī)學(xué)會(huì) (American Urological Association)年會(huì)上，由匹茲堡大學(xué) (University of Pittsburgh)醫(yī)學(xué)院科學(xué)家所發(fā)表的一份最新的研究發(fā)現(xiàn),，綠茶飲品中所含有的活性成份，可以有效的治療泌尿系統(tǒng)疾病,如膀胱炎,。
以往許多研究證實(shí)，綠茶中含有豐富的抗氧化劑,，如catechins的分子,，就已經(jīng)確定可以防止正常與癌變的細(xì)胞，受到過(guò)氧化氫 (hydrogen peroxide)之類(lèi)的過(guò)氧化物所傷害,，其抗氧化作用,，可以保護(hù)正常細(xì)胞，防止癌變,。而這次實(shí)驗(yàn)中,，研究人員利用 catechins分子中主要的兩個(gè)成份 EGCG(epigallocatechin gallate) 和ECG (epicatechin gallate) ，在細(xì)胞培養(yǎng)的環(huán)境中發(fā)現(xiàn),，EGCG和 ECG保護(hù)細(xì)胞免除過(guò)氧化氫侵襲的時(shí)間,，居然高達(dá) 23個(gè)小時(shí)以上，而且研究人員所使用的濃度,，還是日常飲用綠茶可以吸收的濃度,。這項(xiàng)研究令人驚奇,，表明，正常喝茶的濃度就具有強(qiáng)大的抗氧化保護(hù)作用,。
(資料來(lái)源 : biocompare)
英文原文:
Green Tea May Protect The Bladder From Becoming Inflamed
5/20/2007
Source: University of Pittsburgh Schools of the Health Sciences
Herbal agents could be used to treat inflammatory bladder diseases, according to a preliminary study that looked at the ability of green tea to protect bladder cells from inflammation. The University of Pittsburgh School of Medicine study, being presented at the annual meeting of the American Urological Association (AUA) in Anaheim, Calif., found that components of green tea protected bladder cells from damage in culture. The study is Abstract 299 in the AUA proceedings.
Green tea, reported to have many health benefits, is rich in powerful antioxidants that make it a possible remedy for many medical conditions. It is comprised of catechins – plant metabolites that provide it with many anti-oxidative properties.
"We discovered that catechins found in green tea protected both normal and cancerous bladder cells from inflammation when we exposed the cells to hydrogen peroxide," said Michael B. Chancellor, M.D., professor of urology and gynecology at the University of Pittsburgh School of Medicine. "Although further studies are needed, these results indicate herbal supplements from green tea could be a treatment option for various bladder conditions that are caused by injury or inflammation."
In the study, normal and cancerous bladder cells were exposed to two major catechin components of green tea, epigallocatechin gallate (EGCG) and epicatechin gallate (ECG), for 23 hours. Both significantly protected cell lines from exposure to hydrogen peroxide, which damages or kills cells. The concentrations of EGCG and ECG used in the study were at levels that may be achieved through dietary intake.
