海水浸泡伤大鼠胃黏膜和血浆中神经激肽A和降钙素基因相关肽的动态变化

目的： 观察腹腔海水浸泡伤后大鼠胃黏膜和血浆中神经激肽A（NKA）和降钙素基因相关肽（CGRP）水平的动态变化，以探讨感觉神经肽在急性胃黏膜病变中的作用。方法：32只SD大鼠随机分成正常对照组和腹腔浸泡伤组，后者又分为1 h、2 h、3 h 3组，取大鼠胃黏膜和血浆，采用酶标法和放免法测定胃黏膜和血浆中NKA和CGRP水平。结果：随着浸泡时间的延长，腹腔浸泡伤组大鼠胃黏膜NKA和CGRP水平进行性低于正常大鼠（P<0.05），而血浆NKA和CGRP水平进行性高于正常大鼠。结论：海水浸泡伤是一损伤性因素，可引起胃黏膜中NKA和CGRP水平降低、血浆中NKA和CGRP水平升高，提示NKA和CGRP等感觉神经肽在急性胃黏膜病变发生发展过程中可能有重要作用。

Dynamic changes of neurokinin A and calcitonin gene-related peptide levels in gastric mucosal and plasma in rats with celiac seawater-immersing trauma

AIM:To observe the dynamic changes of neurokinin A(NKA) and calcitonin gene-related peptide(CGRP) levels in gastric mucosal and plasma in rats after abdominal seawater-immersing trauma,and to investigate the influence of these two sensory neuropeptides on acute gastric mucosal lesion.METHODS:Thirty-two SD rats were randomly divided into four groups(normal group,celiac seawater-immersing trauma 1,2 and 3 h groups).With emzyoimmunoassay and radioimmunoassay respectively,gastric mucosal and plasma NKA and CGRP levels in rats were measured.RESULTS:Compared with normal rats,with the seawater-immersing time prolonged,gastric mucosal NKA and CGRP levels in rats were progressively decreased(P<0.05),while plasma NKA and CGRP levels significantly elevated.CONCLUSION:Seawater-immersion is a harmful factor,it can lead to elevated plasma NKA and CGRP levels and decrease gastric mucosal NKA and CGRP levels.