脂氧素A4类似物对急性胰腺炎肺损伤大鼠的保护作用  被引量:3

Protective effects of lipoxin A4 analogue on rats with acute pancreatitis associated with lung injury

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作  者:周春华[1] 呼闯营[1] 王少峰[1] 方华梅[1] 朱晓燕[3] 胡端敏[1] 霍红梅[2] 

机构地区:[1]苏州大学附属第二医院消化科,215004 [2]苏州大学附属第二医院实验中心,215004 [3]苏州市第五人民医院中心实验室

出  处:《中华实验外科杂志》2012年第9期1784-1787,共4页Chinese Journal of Experimental Surgery

基  金:苏州市科教兴卫青年科技资助项目,苏州市科技发展计划资助项目

摘  要:目的观察脂氧素A。类似物(LXA4一ME)对急性胰腺炎肺损伤(APALI)大鼠的保护作用,方法 将90只大鼠随机分为假手术组、急性胰腺炎组(AP组)及LXA4-ME治疗组(LXA4一ME组),每组各30K只。逆胰胆管注射5%牛磺胆酸钠(1ml/kg)建立AP模型。LXA4—ME组存造模后尾静脉注射含LXA4一ME(87.5lμg/kg)的生理盐水1m1.假手术组及AP组造模后经尾静脉注射等量生理盐水。于12、24h观察胰腺、肺脏病理学变化、测定肺的干湿重比及血淀粉酶(AMY)水平。检测各组肺脏髓过氧化物酶(MPO)活性及丙二醛(MDA)含量。逆转录一聚合酶链反应(RT—PCR)法检测各组肺组织肿瘤坏死因子(TNF)一α、向细胞介素(IL)一1β、IL-6、细胞间黏附分子(ICAM),1、E一选择素mRNA表达水平。结果LXA4一ME组大鼠胰腺病理学评分(12h:8.8±1.2、24h:7.9±1.3)及肺脏病理学砰分(12h:3.35±0.78、24h:3.29±0.64)均显著低于AP组胰腺(12h:11.6±1.4、24h:11.5±0.7)、肺脏(12h:5.15±0.99、24h:5.054-0.75)病理学评分(P〈0.01);其12、24h肺脏MPO活性[(18.06±0.69)、(19.524-0.76)U/g)]、MDA水平[(1.725±0.201)、(1.626±0.224)nm01/mgl均显著低于AP组MPO活性[(28.40±1.30)、(29.28-4-1.65)U/g)J及MDA水平『(2.412-4-0.279)、(2.518±0.216)nmol/mg)](P〈0.01);其肺脏TNF一α、IL一1β、IL一6、ICAM一1、E-选择素的mRNA表达水平均显著低于AP组(P〈0.01)。结论LXA4一ME对APALI的保护作用可能与其减少肺组织中性粒细胞浸润、降低氧化应激水平、减少促炎性因子和黏附分子表达有关.Objective To investigate the protective effcets of lipoxin A4 analogue ( LXA4 ) -ME on acute panereatitis associated with lung injury, (APALI). Methods Ninety male SD rats were randomly di- vided into sham operation group (n = 30), AP group (n = 30) and LXA4-ME group (n = 30). AP was in- duced by retrograde injection of 5% sodium taurocholate ( 1 ml/kg) into the pancreatic duct. In LXA4-ME group, LXA4-ME was administered (87. 5 ixg/kg) intraveneously after the onset of AP. Sham operation group was given normal saline after the sham operation. The rats were sacrificed at 12 and 24 h after induc- tion of pancreatitis. The serum level of amylase was measured. The histological changes of the pancreas and lung were observed. The activities of myeloperoxidase (MPO) and levels of malondialdehyde (MDA) in the lung tissue were determined. The mRNA levels of tumor necrotizing factor (TNF)-α, interleukin (IL)-1β, IL-6, intereelluar adhesion molecules (ICAM)-I, E-selectin in the lung tissue were measured by using re- verse transcription-polymerase chain reaction (RT-PCR).

关 键 词:胰腺炎 肺损伤 脂氧素A4 肿瘤坏死因子-Α 细胞黏附分子 

分 类 号:R657.51[医药卫生—外科学]

 

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