為探討門脈高壓性胃病的發(fā)病機(jī)理,將Wistar大鼠42只隨機(jī)分為肝硬變組(LC組,n=15)、門靜脈狹窄組(PVS組,n=15)和假手術(shù)組(SO組,n=12),以觀察其血流動(dòng)力學(xué)指標(biāo)、胃壁結(jié)合粘液(GP)、胃粘膜內(nèi)源性前列腺素E2(PGE2)水平、胃基礎(chǔ)泌酸量(BAS)以及H+返滲量(H+BD)。結(jié)果:LC組及PVS組大鼠內(nèi)臟血流量較SO組明顯增加(P<0.001),但胃粘膜卻處于缺血狀態(tài);其GP和PGE2含量也較SO組顯著下降(P<0.01),其中LC組又較PVS組更低(P<0.05);BAS 3組間無(wú)差異,但LC組及PVS組大鼠之H+BD明顯高于SO組(P<0.001),且以LC組最為顯著。本實(shí)驗(yàn)結(jié)果提示:門靜脈高壓大鼠胃粘膜屏障功能遭到嚴(yán)重破壞,尤以肝硬變大鼠為甚;門脈高壓性胃病的發(fā)生與胃粘膜屏障功能削弱有關(guān);肝功能受損參與胃粘膜病變的發(fā)生。
引用本文: 周東風(fēng),孫作祥,梁桂華,李紅梅,王占民. 門脈高壓大鼠胃粘膜屏障功能的實(shí)驗(yàn)研究. 中國(guó)普外基礎(chǔ)與臨床雜志, 1998, 5(3): 135-137. doi: 復(fù)制
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- 5. Sarfeh IJ, Tarnawski A, Malki, A, et al.Portal hypertension and gastric mucosal injury in rats. Gastroenterology, 1983; 84(5)∶987.
- 6. Agustin A, Luis A, Colombato, et al. Sequence of morphological and hemodynamic changes of gastric microvessels in portal hypertension. Gastroenterology, 1992; 102(6)∶2066.
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