Gastroenterology:降低胰腺温度可降低急性胰腺炎的严重程度并提高生存率

2019-02-09 MedSci MedSci原创

不同病因的急性胰腺炎(AP)与胰腺细胞中不同信号传导途径有关,因此也对靶向治疗的发展提出了新挑战。在此项研究中研究人员探讨了局部胰腺低温是否可以减轻大鼠的AP严重程度。

背景与目的
不同病因的急性胰腺炎(AP)与胰腺细胞中不同信号传导途径有关,因此也对靶向治疗的发展提出了新挑战。在此项研究中研究人员探讨了局部胰腺低温是否可以减轻大鼠的AP严重程度。

方法
研究人员将聚氨酯球囊置于大鼠内。通过施用雨蛙肽或甘油三亚油酸酯(GTL)在Wistar大鼠中诱导AP的形成。然后,将冷水注入球囊中以冷却胰腺。使用未灌注的球囊的小鼠作为对照。同时监测胰腺和直肠温度,并使用红外灯或加热垫以避免全身性低温。研究人员同时收集血液,胰腺,肾脏和肺组织,并通过组织学免疫荧光,免疫印迹,细胞因子和趋化因子磁珠以及DNA损伤测定进行分析。在腺泡细胞中研究了低温对由雨蛙和GTL引发的信号传导途径的影响。

结果
与接受对照球囊的大鼠相比,胰腺冷却的大鼠发生不太严重的GTL诱导的AP。在腺泡细胞中,冷却降低了GTL诱导的脂解作用,增加了其脂肪酸的胶束形态,降低了细胞溶质钙的增加,防止了线粒体膜电位的损失(降低了70%-80%),并导致40%摄取脂肪酸示踪剂降低50%。在AP大鼠中,冷却使胰腺坏死减少48%,降低血清细胞因子和细胞损伤标志物,并降低肺和肾损伤标志物。胰腺冷却增加了诱导AP后6小时存活的大鼠的比例。

结论
在AP大鼠中,经局部胰腺低温可减少胰腺坏死,细胞凋亡,炎症和胰腺炎严重程度,并提高生存率。

原始出处:

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    2019-03-30 许安
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