5-羟色胺及其受体在大鼠重症急性胰腺炎肠动力障碍中的表达  被引量:3

Expression of 5-hydroxytryptamine and its receptor in severe acute pancreatitis rats with intestinal motility disorder

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作  者:薛育政 吴燕敏[2] 盛颖玥[2] 余利华[2] 俞宪民[2] 林琳 施瑞华 李兆申[3] 

机构地区:[1]南京医科大学第一附属医院消化内科,210019 [2]无锡市第三人民医院消化内科 [3]上海长海医院消化内科

出  处:《中华消化杂志》2013年第8期538-543,共6页Chinese Journal of Digestion

基  金:江苏省"333工程"科研项目,江苏省中医药局中医药科技项目,无锡市社会发展项目

摘  要:目的探讨5-羟色胺及其受体(5-HT,-R)在重症急性胰腺炎(sAP)肠动力障碍大鼠模型中的表达。方法将48只成年SD大鼠均分为假手术组和SAP组[向胆胰管内注入3.5%牛磺胆酸钠(1mL/kg)制备SAP模型],每组24只。于造模后1、3、6、12h每组各处死6只大鼠并立即心脏取血,利用全自动生物化学分析仪检测血清淀粉酶和脂肪酶水平,ELISA法测定血清5-羟色胺和IL-6含量。另取造模后6h两组大鼠距屈氏韧带10cm空肠、末端回肠和乙状结肠组织,采用Western免疫印迹法检测肠黏膜中5-HT1AnR蛋白表达情况。同时用免疫组织化学法分别检测两组大鼠造模后1、3、6、12h空肠、末端回肠和乙状结肠黏膜中5-HT。nR阳性细胞的表达并计算其面积。统计学处理采用t检验。结果SAP组大鼠血清淀粉酶、脂肪酶、5-羟色胺和IL-6水平在造模后3、6、12h淀粉酶分别为(12708土321)、(24507土532)、(18097±424)U/L,脂肪酶分别为(69±4)、(357±99)、(264士87)U/L,5-羟色胺分别为(1145±74)、(1577±79)、(1216±86)ng/mL,IL-6分别为(67±7)、(112±11)、(83士8)μg/mL]均明显高于假手术组,差异均有统计学意义(t=89.51、108.46、98.68、10.39、7.82、6.24、12.30、23.05、12.55、10.94、15.70、13.76,P均〈0.01)。与假手术组相比,SAP组造模后6h5-HT,AR蛋白表达水平和造模后3、6、12h5-HT-AR阳性细胞面积在空肠[分别为(1.58土0.35)×10^4、(1.43±0.34)×10^4、(1.49±0.32)×10^4μm2]、末端回肠[分别为(1.49±0.31)×10^4、(1.36±0.35)×10^4、(1.33±0.27)×10^4μm2]、乙状结肠[分别为(1.53±0.29)×10^4、(1.43±0.33)×10^4、(1.56士0.37)×10^4]均明显下降,差异均有统计学意义(t=10.72、9.92、10.83、10.07、11.09、11.39、10.67、12.22、9.34,P均〈0.01)。结Objective To investigate the expression of 5-hydroxytryptamine (5-HT) and its receptor (5-HTIAR) in severe acute pancreatitis (SAP) rats with intestinal motility disorder. Methods A total of 48 adult SD rats were evenly divided into sham operation group (SO group) and SAP group. There were 24 rats in each group. The SAP model was induced by retrograde injection of 3.50/oo sodium taurocholate (1 mL/kg) into biliopancreatic duct. After modeling, at one, three, six and 12 hour time point six rats of each group were sacrificed and the venous blood was extracted. Thelevels of amylase and lipase were detected by automatic biochemical analyzer. The content of 5 HT and interleukin-6 (IL- 6) were measured by enzyme linked immunosorbent assay(EI.ISA). File tissues of 10 cm apart from trans ligament jejunum, terminal ileum and sigmoid colon were collected and the expresskmof5 HR in the tissues at protein level was detected by Western blotting. At one, three, six and 12 hour after modeling, the expression of 5-HTm R positive cells in the mucosa tissues of jejunum, terminal ileum and sigmold colon of the rats in the two groups was observed by inmnmohistochemical and the area was calculated. The data were analyzed by t test. Results The levels of serum amylase, lipase, 5-HT and II.-6 of SAP group were all significantly highei than those of SO group at three, six, 12 hour after modeling (serum amylase level.. (12 708土321), (24 507土 582). (18 097土424) U/L: serum lipaselevel, (69土4), (357土99), (264土87) U/L serum 5-HT level: (11.15土74). (1577土79). (1216土86)ng/mL; serumll.-6 level.. (67土7), (112土11), (83土8) pg ml.) (t=89.51. 108.46, 98.68, 10.39, 7.82, 6.24. 12.. 30. 23.05, 12.55, 10.94, 15.70, 13. 76 ; all P〈0.01 ). (ompared wit h SO group, t he expresskms of 5- H T . R prot eins at six hour after modeling and the area of 5-HTR positive cells in the jejunum ((1.58土0.35) X 10^4 , (1.43土0.3,1) 10 and (

关 键 词:受体 血清素 5-HT1A 胰腺炎 急性坏死性 胃肠疾病 大鼠 SPRAGUE-DAWLEY 

分 类 号:R576[医药卫生—消化系统]

 

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