大黄素诱导细胞凋亡对不同类型急性胰腺炎腺泡死亡方式的影响

目的 探讨大黄素(emodin)诱导细胞凋亡对不同类型急性胰腺炎(AP)腺泡细胞死亡方式影响及其可能机制.方法 制作大鼠急性水肿型胰腺炎(AEP)与急性坏死型胰腺炎(ANP)模型.使用大黄素进行治疗.采用原位TUNEL及RT-PCR等技术,观察胰腺组织内细胞凋亡、NF-κBmRNA、Bax mRNA及TNF-α mRNA等变化情况.结果 各组大鼠胰腺细胞凋亡指数与胰腺组织病理学评分呈负相关;大黄素治疗可诱导各型AP模型腺泡细胞凋亡,胰腺病理学改变及组织学评分改善,胰腺组织内NF-κB mRNA及Bax mRNA表达增加.结论 诱导不同类型AP胰腺细胞凋亡可明显减轻AP病情.大黄素为治疗AP的有效药物,可能通过影响NF-κB活化及Bax的表达来诱导AP时腺泡细胞的凋亡,减轻胰腺炎的严重程度.

Effect of emodin on pancreas acinar death patterns in defferent types of acute pancreatitis

Objective To investigate the effect of Chinese medicine emodin on death patterns of pancreaticacinar cells in different types of aute pancreatitis and explore its possible mechanism. Methods Rat acute edematous pancreatitis models and acute necrotic pancreatitis models were estab-lished and treated with emodin. Alternations of apoptosis, NF-κB mRNA, Pax mRNA and TNF-α mRNA expression in pancreatic tissue were studied with in situ TUNEL and RT-PCR. Results Nega-tive correlation was found between apoptosis and the severity of pancreatic damage. Following the treatment with emodin, more apoptosis than necrosis was observed in all treaded groups of acute pan-creatitis and the severity of pancreatic histological pathologic damage was dramatically improved. Local expression of NF-κB mRNA and Bax mRNA increased. Conclusion Pancreas aeinar death patterns of apoptosis are induced by emodin. Emodin might regulate the acinar cell death patterns by changing the activation of NF-κB and the expression of bax to lessen the severity.