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黏膜前列腺素和DNA合成在腔内表皮生长因子对胃细胞保护中的作用。

Role of mucosal prostaglandins and DNA synthesis in gastric cytoprotection by luminal epidermal growth factor.

作者信息

Konturek S J, Brzozowski T, Piastucki I, Dembinski A, Radecki T, Dembinska-Kiec A, Zmuda A, Gregory H

出版信息

Gut. 1981 Nov;22(11):927-32. doi: 10.1136/gut.22.11.927.

Abstract

This study compares the effect of epidermal growth factor and prostaglandins (PGE2 or PGI2), applied topically to gastric mucosa, on gastric secretion and formation of ASA-induced gastric ulcerations in rats. Epidermal growth factor given topically in non-antisecretory doses prevented dose-dependently the formation of ASA-induced ulcers without affecting prostaglandin generation but with a significant rise in DNA synthesis in the oxyntic mucosa. The anti-ulcer effect of topical prostaglandins was also accompanied by an increase in DNA synthesis. This study indicates that topical epidermal growth factor, like PGE2 or PGI2, is cytoprotective and that this cytoprotection is not mediated by the inhibition of gastric secretion or prostaglandin formation but related to the increase in DNA synthesis in oxyntic mucosa.

摘要

本研究比较了局部应用于大鼠胃黏膜的表皮生长因子和前列腺素(PGE2或PGI2)对胃分泌及阿司匹林诱导的胃溃疡形成的影响。以非抗分泌剂量局部给予表皮生长因子可剂量依赖性地预防阿司匹林诱导的溃疡形成,且不影响前列腺素的生成,但可使胃黏膜DNA合成显著增加。局部应用前列腺素的抗溃疡作用也伴有DNA合成增加。本研究表明,局部应用表皮生长因子与PGE2或PGI2一样具有细胞保护作用,且这种细胞保护作用不是通过抑制胃分泌或前列腺素形成介导的,而是与胃黏膜DNA合成增加有关。

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