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内皮素是一种强烈的血管活性多肽，已证实它在急性胃粘膜损伤中有重要作用。心理应激往往是溃疡病复发和加重的诱因。本实验采用心理应激模型──光电刺激模型来研究内皮素在心理应激性胃粘膜损伤中的作用。１材料和方法１．１动物及分组雄性ＳＤ大鼠４０只，体质量 ２５０～３
Endothelin is a potent vasoactive peptide that has been shown to play an important role in acute gastric mucosal injury. Psychological stress is often the cause of ulcer disease recurrence and aggravating. In this study, the psychological stress model ─ ─ photoelectric stimulation model to study the role of endothelin in psychological stress gastric mucosal injury. 1 Materials and methods 1.1 Animals and groups 40 male SD rats, body mass 250 ~ 3