Effect of Green Tea on the Anti-Duodenal Ulcer in Cysteamine- Administrated Rats

녹차추출액이 Cysteamine투여 흰쥐의 항십이지장궤양에 미치는 영향

Effect of green tea extract, on duodenal ulceration was studied in male Sprague Dawley rats treated with cysteamine, a drug, which causes duodenal ulcers in experimental animal. As a result, in the proximal duodenum, a significant decrease of ulceration was detected twenty four hours after cysteamine injection in rats raised in green tea extract for 63days. Special reference to duodenal alkaline phosphatase activity was measured in mucosal homogenates. In control rats raised in tap water Riven saline, significant decrease was observed in proximal duodenal alkaline phosphataes activity. The decrease effect seems site specific, since the enzyme in the distal duodenum remains. Moreover the effect cysteamine in control rats alkaline phosphatase is specific, because, in rats raised in green tea extracts did not show significant change in activity. It is suggested that green tea extract acts in ideal properties as an anti-duodenal ulcer agent.

녹차추출액을 사용하여 Sprague Dawley 휜쥐를 63일간 사육한 뒤 십이지장궤양 유발제 cysteamineㆍHCI(400mg/1kg b.w.)을 투여하면 수도물에 의해 같은 기간 사육한 대조군 (TW군) 보다 cysteamine에 대한 감수성은 유의하게 저하되어 십이지장궤양 발병율이 TW군의 50%를 나타냈다. 또한 TW군은 cysteamine투여에 의해 십이지장점막 극재 효소인 alkaline phosphatase (ALP) 활성을 상부십이지장 점막에 있어서 현저하게 저하시켰으나 GT군은 유의하게 활성이 유지되고 ALP 분자종에 있어서도 TW군과 상이한 양상을 나타내 녹차 추출액이 cysteamine 궤양에 있어서 항 궤양적 생리활성을 발휘하고 있는 사실이 밝혀졌다.