急性胰腺炎病理生理
急性胰腺炎是胰酶异常激活导致胰腺自身消化引发的炎症反应,其病理生理过程涉及腺泡细胞损伤、炎症介质激活和全身并发症三个阶段。胰酶在腺泡细胞内提前激活是核心始动环节。正常情况下胰蛋白酶原在肠道被肠激酶激活,但酒精过度刺激或胆结石阻塞胰管时,溶酶体酶与胰蛋白酶原在腺泡内结合,形成空泡化现象并触发级联反应。活化的胰蛋白酶不仅消化细胞内的膜结构,还会激活磷脂酶A2和弹...
2025-12-28 13:23:28
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