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组胺对失血大鼠模型肠黏膜屏障的保护作用 被引量:8

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摘要 目的观察组胺(histamine)对失血大鼠肠黏膜屏障的保护作用。方法将大鼠随机分为对照组、失血组和失血加组胺治疗组。除对照组外,其他各组大鼠均采取颈静脉放血制成失血模型。失血加组胺治疗组大鼠在放血后立即给予小肠内100、500和1000ng/ml浓度组胺灌注,对照组和失血组用同样方法向小肠内灌注等量生理盐水。4h后在无菌条件下分别取出肝、肠系膜淋巴结和肾制成匀浆进行细菌培养。取部分回肠进行病理学检查。结果对照组1只大鼠肝、肠系膜淋巴结有细菌生长,平均组织含菌量分别为0.32×105、0.26×105cfu/g,肾无菌生长;失血组7只大鼠肝、肠系膜淋巴结有细菌生长,5只大鼠肾有细菌生长,平均组织含菌量为9.92×105、8.14×105、3.25×105cfu/g;失血加组胺治疗组共有4只大鼠肝、肠系膜淋巴结有细菌生长,3只大鼠肾有细菌生长,平均组织含菌量分别为(0.38~0.96)×105、(0.28~0.75)×105cfu/g和(0.20~0.26)×105cfu/g。失血加组胺治疗各组大鼠肝、肠系膜淋巴结和肾平均组织含菌量均明显低于失血组大鼠,差异有统计学意义(P<0.01);组胺治疗各组之间肝、肠系膜淋巴结和肾平均组织含菌量差异无统计学意义(P>0.05)。病理学检查失血组大鼠肠黏膜损伤程度明显重于失血加组胺治疗各组。结论在肠道缺血时,给予小剂量组胺肠内灌注,有减轻肠黏膜损伤、保护肠黏膜屏障、阻止肠道细菌移位的作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2008年第23期2303-2305,共3页 Chinese Journal of Gerontology
基金 河北省科技攻关基金资助项目(05276101D-21)
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