罗格列酮对大鼠重症急性胰腺炎肾损伤的保护作用

目的 探讨高选择性过氧化物酶体增殖物激活受体-γ的激动剂罗格列酮(ROSI)对大鼠重症急性胰腺炎肾损伤的可能作用。方法 雄性Wistar大鼠54只，随机（随机数字法）分为假手术组（SO组）、重症急性胰腺炎组（SAP组）和罗格列酮处理组（ROSI组），每组大鼠18只。胆胰管逆行注射5％牛磺胆酸钠制备重症急性胰腺炎模型。ROSI组造模前30 min经股静脉注射10％二甲基亚砜(DMSO)溶解的罗格列酮（6mg/kg）；SO组、SAP组则经股静脉注射10％DMSO (0.2 mL/100 g)。术后3，12，24时点分批剖杀大鼠，每个时间点6只。分别检测各组血淀粉酶、血肌酐、血尿素氮、尿微量白蛋白、尿IgG、尿α1-微球蛋白含量，取肾组织行病理学检查。结果 SAP组各时间点血淀粉酶、血肌酐、血尿素氮、尿微量白蛋白、尿IgG、尿α1-微球蛋白等指均较SO组升高(P＜0.05)；ROSI组上述指标较SAP组下降，各项指标在12，24h与SAP组差异具有统计学意义(P＜0.05)，且随着处理时间的延长，ROSI组与SAP组各项指标的差异更显著。结论 重症急性胰腺炎可导致肾损伤，而罗格列酮可显著减轻重症急性胰腺炎所导致的肾损伤程度。

The protective effect of rosiglitazone on renal injury of severe acute pancreatitis

Objective To investigate the effects of rosiglitazone, the agent of highly selective peroxisome proliferator-activated receptor-γ agonist, on the renal injury of rats with severe acute pancreatitis. Methods Fifty-four male Wistar rats were randomly (random number) divided into three groups : sham operation group ( SO group), severe acute pancreatitis group ( SAP group ) and rosiglitazone pretreatment group (ROSI group) . Severe acute pancreatitis model was induced by retrograde infusion of 5％ sodium taurocholate into the biliopancreatic duct. Rosiglitazone (6 mg/kg) dissolved in 10％ DMSO were injected into the femoral vein 30 minutes prior to the modeling. The solution of 10％ DMSO was given to rats of SO group and SAP group. Rats were sacrificed 3, 12 and 24 h after modeling. The levels of serum amylase, serum creatinine, urea nitrogen, urinary albumin, urinary lgG and αl-microglobulin were measured and analyzed statistically. Kidney tissue samples were stained respectively with hematoxylin and eosin for histopathological evaluation. Results The levels of serum amylase, serum creatinine, urea nitrogen, urinary albumin, urinary IgG and αl-microglobulin were significantly increased (P ＜ 0. 05 )after modeling, while lesser increases were found in ROSI group 12 h and 24 h after modeling (P ＜0. 05)compared with those in SAP group. Conclusions Renal injury can be induced by severe acute pancreatitis,while Rosiglitazone protects rats from renal injury in the setting of severe acute panereatitis.