Dig Dis Sci:4-苯基丁酸可以减轻内质网应激介导的重症急性胰腺炎大鼠肠上皮细胞凋亡

2019-06-10 不详 MedSci原创

4-苯基丁酸(4-PBA)可能对于维持肠上皮屏障具有有益作用,本研究旨在确定重症急性胰腺炎(SAP)内质网应激(ERS)是否可诱导肠上皮细胞(IECs)凋亡,以及4-苯基丁酸(4-PBA)在SAP-中肠屏障损伤的修复作用。

目标
4-苯基丁酸(4-PBA)可能对于维持肠上皮屏障具有有益作用,本研究旨在确定重症急性胰腺炎(SAP)内质网应激(ERS)是否可诱导肠上皮细胞(IECs)凋亡,以及4-苯基丁酸(4-PBA)在SAP-中肠屏障损伤的修复作用。

方法
研究人员将24只雄性大鼠随机分成3组:假手术组,SAP组和SAP模型加4-PBA治疗组(4-PBA组)。通过逆行注射5%牛磺胆酸钠(STC)进入胆胰管诱导大鼠SAP模型; 在建模前,在4-PBA组中,以50mg / kg体重的剂量腹膜内注射4-PBA 3天。

结果
结果表明,4-PBA可以对以下炎症损伤起到减弱作用:(1)胰腺肠道病理损伤,(2)血清TNF-α,IL-1β和IL-6,(3)血清DAO水平,血清内毒素水平,(4) IECs的细胞凋亡,(5)ER应激标记物(caspase-12,CHOP,GRP78,PERK,IRE1α,ATF6)和caspase-3在肠道中的表达。然而,血清AMY,LIPA水平和caspase-9,caspase-8的表达仅略微下降。

结论
ERS是介导重症急性胰腺炎大鼠肠上皮损伤的重要因子,4-PBA可通过减弱ERS的严重程度来抑制细胞凋亡。

原始出处:

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