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四磨汤对慢性应激小鼠胃肠运动及血管活性肠肽表达的影响 被引量:8

Effect of Simotang on gastrointestinal motility and expression of vasoactive intestinal peptide in chronical stressed mice
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摘要 目的 探讨四磨汤对慢性应激小鼠胃肠运动及对下丘脑、脊髓、十二指肠血管活性肠肽(VIP)的影响.方法 30只小鼠随机分为正常组、慢性应激组和四磨汤组;采用不可预知的多种刺激制备慢性应激模型;21d后检测动物胃内残留率和小肠排空率,分别采用免疫组化法、半定量逆转录-聚合酶联反应(RT-PCR)法检测下丘脑、脊髓、十二指肠VIP的表达.结果 与正常组[(49.81±8.56)%;(51.02±5.11)%]比较,慢性应激能增加胃内残留率[(61.53±8.71)%;P<0.05],降低小肠推进率[(31.79±2.38)%;P<0.05];与正常组[十二指肠、下丘脑、脊髓组织阳性细胞数和基因表达水平分别为(6.5±0.9)个/mm2;(10.8±1.3)个/mm2;(9.3±1.5)个/mm2和0.43±0.04;0.57±0.03;0.53±0.02]比较,慢性应激组[(8.8±1.1)个/mm2;(12.9±1.5)个/mm2;(12.1±1.2)个/mm2);(0.58±0.03;0.81±0.07;0.76±0.02)]显著增加(P<0.05);而四磨汤组小鼠胃内残留率[(52.93±9.15)%]、小肠推进率[(48.98±4.38)%]、十二指肠、下丘脑、脊髓组织VIP阳性细胞数[(6.7±0.9)个/mm2;(10.6±1.4)个/mm2;(9.1±1.3)个/mm2)]和基因表达(0.48±0.05;0.61±0.05;0.55±0.05)均差异无显著性(P>0.05).与慢性应激组比较,四磨汤组显著增强胃肠运动(P<0.05),降低VIP表达(P<0.05).结论 四磨汤能抑制慢性应激所致的十二指肠、下丘脑、脊髓血管活性肠肽表达的增强. Objective To explore effect of Simotang on gastrointestinal motility and expression of vasoactive intestinal peptide(VIP) in the hypothalamus, spinal cord and duodenum of chronical stressed mice. Methods Mice were randomly divided into normal, stress and Simotang group( n= 10 in each group), and given a variety of unpredictable chronic mild stress. After 21 days gastric emptying and intestinal propulsion function were measured,the expression of VIP was detected by immunohistochemistry and RT-PCR. Results Compared with mice in normal group( (49.81 ± 8.56)%; (51.02 ± 5.11 )% ), chronic stress increased gastric residual rate( (61.53 ±8.71 ) %; P 〈 0.05 ) and reduced small intestine propulsion rate ( ( 31.79 ± 2.38 ) %; P 〈 0. 05 ). There were differences in expressions of VIP positive cells and mRNA in duodenum( (8.8 ± 1.1 )/mm2 and(0. 58 ±0.03) ),hypothalamus ( ( 12.9 ± 1.5 )/mm2 and (0.81 ± 0. 07 ) ) and spinal cord ( ( 12.1 ± 1. 2)/mm2 and (0.76 ± 0.02) )in chronic stress group compared with normal group( (6.5 ± 0. 9)/mm2 and (0.43 ± 0. 04);( 10.8 ± 1.3 )/mm2and (0.57 ± 0.03 ); (9.3 ± 1.5 )/mm2 and (0.53 ± 0. 02 ) respectively). There was not difference in gastric residual rate (52.93 ± 9.15 )%, small intestine rate(48.98 ± 4.38 )% and expressions of VIP positive cells and mRNA in duodenum ( (6.7 ± 0.9)/mm2 and (0.48 ± 0. 05 ) ), hypothalamus ( ( 10. 6 ± 1.4 )/mm2 and ( 0. 61 ± 0. 05 ) )and spinal cord ( (9. 1 ± 1.3)/mm2 and(0.55 ± 0.05 ) ) in Simotang group compared with those in normal group (P 〉 0.05 ), but there were decreased compared with those in chronic stress group (P 〈 0.05 ). Conclusion Simotang can regulate expressions of VIP in duodenum, hypothalamusand spinal cord in chronically stressed mice.
出处 《中华行为医学与脑科学杂志》 CAS CSCD 北大核心 2011年第4期292-294,共3页 Chinese Journal of Behavioral Medicine and Brain Science
基金 基金项目:国家重点基础研究“973”计划课题资助项目(2009CB523002)
关键词 慢性应激 功能性胃肠病 血管活性肠肽 小鼠 四磨汤 Chronic stress Functional gastrointestinal disorders Vasoactive intestinal peptide Mouse Simotang
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