【摘要】 本文以无水乙醇灌胃诱发大鼠急性胃粘膜损伤为模型,观察胃粘膜损伤前后以及应用木同剂量胶态次枸橼酸铋（De-Nol）后胃粘膜损伤指数计分和胃粘膜病理组织学改变,并测定胃酸分泌量、胃粘液分泌量、胃粘膜Na⁺,K⁺ATP酶活力以及不同组动物血浆6-keto-PGF_l1内皮素（ET）含量的变化,试图从多方面探讨胶态次枸橼酸铋在抗粘膜损伤中的作用及机制。结果:次枸橼酸铋能有效减轻由无水乙醇造成的胃粘膜病理组织学改变,使损伤指数计分降低,粘膜分泌增加,胃牯膜Na⁺.K⁺.ATP酶活力上升,并可抑制由于牯膜损伤造成的血浆PGI₂的下降和ET水平的升高,但其对胃酸分泌无明显影响。由此推断,次枸橼酸铋的抗损伤机制与提高血浆PGI₂水平、降低ET、激活Na⁺.K⁺.ATP酶活力和促进粘液分泌有关,而与抑酸作用无关。更多还原

【Abstract】 Background/Aims: To evaluate the mechanism of the protective effect of CBS on gastric mucosa. Methods: Animal model of acute gastric mucosa injury was induced by 100% ethanol and different doses of CBS were given orally. Following investigations were made: Na+-K+-ATPase activity of gastric mucosa, serum concentrations of 6-keto-PGF1x,, endothelin, secretions of gastric acid and mucus, and the pathologic changes of optical microscope, scanning electro-microscope, and transmissive electromicroscope. Results: CBS could decrease index of gastric mucosa injury, lessen the pathologic injury, decrease serum concentration of endothelin, and increase serum concentration of 6-keto-PGF1x Na+-K+-ATPase activity in gastric mucosa and secretion of gastric mucus, but the secretion of gastric acid has no change. Conclusion: CBS has preventive effect against acute gastric mucosa injury, the mechanism may relate to multiple factors mentioned above.更多还原