诱导型一氧化氮合酶(iNOS)对重症急性胰腺炎时胰岛内分泌功能的影响(1)
[摘要] 目的 研究重症急性胰腺炎大鼠胰腺内分泌功能的变化,探讨iNOS在胰腺内分泌功能损伤中的作用。方法 2015年7月—2016年7月在济宁医学院动物实验中心取健康雄性Wistar大鼠,体重250~300 g,24只随机分成2组,对照组12只,SAP组12只,应用5%牛磺胆酸钠逆行注入大鼠胰胆管制作重症急性胰腺炎(severe acute pancreatitis, SAP)大鼠模型,检测血清淀粉酶、血糖浓度;分离胰岛,行葡萄糖刺激胰岛素分泌试验;应用NOS试剂盒检测胰岛iNOS的活性。结果 SAP组血糖、血清淀粉酶、葡萄糖葡萄糖刺激胰岛素分泌实验和胰岛的iNOS活性分别为:(11.50±1.36)mmol/L、(1 575.36±435.33)mIU/L、(3.90±0.78)mIU/L、(10.36±2.14)mIU/L和(30.27±3.57)U/mL;对照组分别为:(5.32±1.25)mmol/L、(104.18±35.58)mIU/L、(7.82±1.03)mmol/L、(25.60±3.72)mmol/L和(7.79±0.58)U/mL;两组分别相比差异有统计学意义(P<0.05)。结论 重症急性胰腺炎时对胰岛功能影响较大SAP胰岛功能损伤与iNOS活性增强有关系,对胰岛素分泌产生负面影响。
[关键词] 急性胰腺炎;动物模型;诱导性一氧化氮合酶;内分泌功能;胰岛素
[中图分类号] R657 [文献标识码] A [文章编号] 1674-0742(2017)06(b)-0042-03
[Abstract] Objective To research the changes of rat endocrine function of severe acute pancreatitis and study the effect of iNOS in the pancreatic endocrine function injuries. Methods 24 healthy male rats in the animal experimental center of Jining Medical College whose weight was 250~300 g from July 2015 to July 2016 were randomly divided into two groups with 12 rats in each, and the serum amylase and blood glucose concentration were tested and the insulin was isolated and the rats were given the glucose-stimulated insulin secretion test, and the insulin iNOS activity was tested by the NOS kit. Results The differences in the blood glucose, serum amylase, glucose and glucose stimulated insulin secretion test and iNOS activity of insulin between the SAP group and the control group were statistically significant[(11.50±1.36)mmol/L,(1 575.36±435.33)mIU/L, (3.90±0.78)mIU/L, (10.36±2.14)mIU/L, (30.27±3.57) U/mL vs (5.32±1.25)mmol/L,(104.18±35.58)mIU/L,(7.82±1.03)mmol/L,(25.60±3.72)mmol/L(7.79±0.58)U/mL](P<0.05). Conclusion The effect of severe acute pancreatitis on the insulin function is bigger, and the SAP insulin function injury is related to the enhancement of iNOS activity and has a negative effect on the insulin secretion.
[Key words] Acute pancreatitis; Animal mode; Inducible nitric oxide synthase; Endocrine function; Insulin
急性胰腺炎( acute pancreatitis,AP)是普外科多发的疾病,随着生活水平提高,发病率在增加,同时常伴有糖代谢异常,提示急性胰腺炎对胰腺胰岛功能有一定的影响[1-2]。SAP时更易发生胰腺内分泌功能损伤,近来研究表明胰腺内外分泌系统之间有很强的功能联系[3]。SAP胰岛功能改变的机制尚不十分清楚。尤其是重症胰腺炎时,会加剧胰腺组织释放的炎症介质和细胞因子影响胰腺炎病程[4-6],促使iNOS激活,表达,这,iNOS的mRNA,翻译成iNOS,iNOS形成二聚体催化NO合成。正常情况下NOS是胰岛β细胞分泌胰岛素的重要递质,因此iNOS激活表达是SAP胰岛功能改变可能有一定联系。该实验2015年7月—2016年7月在济宁医学院动物实验中心取健康雄性Wistar大鼠24只进行随机分组建模研究,探討iNOS活性增强是否参与SAP胰岛功能损伤,现报道如下。
1 资料与方法
1.1 一般资料
取健康雄性雄性Wistar大鼠,24只,8周龄,体重250~300 g,由济宁医学院实验动物中心提供,适应性喂养1周后,实验分组及建模:随机分成2组,对照组12只,SAP组12只。大鼠SAP模型建立方法:大鼠禁食水12 h。参考Aho等的方法建模型。对照组:开腹翻动大鼠胰腺3次。两组样本资料的数量、年龄、体重等差异无统计学意义(P>0.05)。主要试剂:牛磺胆酸钠;T4009胶原酶;Histopaque-1077。, 百拇医药(李昌 母珍珍 王磊 韩冰 王仰亮 蓝诺)
[关键词] 急性胰腺炎;动物模型;诱导性一氧化氮合酶;内分泌功能;胰岛素
[中图分类号] R657 [文献标识码] A [文章编号] 1674-0742(2017)06(b)-0042-03
[Abstract] Objective To research the changes of rat endocrine function of severe acute pancreatitis and study the effect of iNOS in the pancreatic endocrine function injuries. Methods 24 healthy male rats in the animal experimental center of Jining Medical College whose weight was 250~300 g from July 2015 to July 2016 were randomly divided into two groups with 12 rats in each, and the serum amylase and blood glucose concentration were tested and the insulin was isolated and the rats were given the glucose-stimulated insulin secretion test, and the insulin iNOS activity was tested by the NOS kit. Results The differences in the blood glucose, serum amylase, glucose and glucose stimulated insulin secretion test and iNOS activity of insulin between the SAP group and the control group were statistically significant[(11.50±1.36)mmol/L,(1 575.36±435.33)mIU/L, (3.90±0.78)mIU/L, (10.36±2.14)mIU/L, (30.27±3.57) U/mL vs (5.32±1.25)mmol/L,(104.18±35.58)mIU/L,(7.82±1.03)mmol/L,(25.60±3.72)mmol/L(7.79±0.58)U/mL](P<0.05). Conclusion The effect of severe acute pancreatitis on the insulin function is bigger, and the SAP insulin function injury is related to the enhancement of iNOS activity and has a negative effect on the insulin secretion.
[Key words] Acute pancreatitis; Animal mode; Inducible nitric oxide synthase; Endocrine function; Insulin
急性胰腺炎( acute pancreatitis,AP)是普外科多发的疾病,随着生活水平提高,发病率在增加,同时常伴有糖代谢异常,提示急性胰腺炎对胰腺胰岛功能有一定的影响[1-2]。SAP时更易发生胰腺内分泌功能损伤,近来研究表明胰腺内外分泌系统之间有很强的功能联系[3]。SAP胰岛功能改变的机制尚不十分清楚。尤其是重症胰腺炎时,会加剧胰腺组织释放的炎症介质和细胞因子影响胰腺炎病程[4-6],促使iNOS激活,表达,这,iNOS的mRNA,翻译成iNOS,iNOS形成二聚体催化NO合成。正常情况下NOS是胰岛β细胞分泌胰岛素的重要递质,因此iNOS激活表达是SAP胰岛功能改变可能有一定联系。该实验2015年7月—2016年7月在济宁医学院动物实验中心取健康雄性Wistar大鼠24只进行随机分组建模研究,探討iNOS活性增强是否参与SAP胰岛功能损伤,现报道如下。
1 资料与方法
1.1 一般资料
取健康雄性雄性Wistar大鼠,24只,8周龄,体重250~300 g,由济宁医学院实验动物中心提供,适应性喂养1周后,实验分组及建模:随机分成2组,对照组12只,SAP组12只。大鼠SAP模型建立方法:大鼠禁食水12 h。参考Aho等的方法建模型。对照组:开腹翻动大鼠胰腺3次。两组样本资料的数量、年龄、体重等差异无统计学意义(P>0.05)。主要试剂:牛磺胆酸钠;T4009胶原酶;Histopaque-1077。, 百拇医药(李昌 母珍珍 王磊 韩冰 王仰亮 蓝诺)