中国比较医学杂志
中國比較醫學雜誌
중국비교의학잡지
CHINESE JOURNAL OF COMPARATIVE MEDICINE
2014年
3期
30-33
,共4页
王喆%郭广进%熊敏%牛天慧
王喆%郭廣進%熊敏%牛天慧
왕철%곽엄진%웅민%우천혜
急性低压缺氧%超氧化物歧化酶%丙二醛%还原型谷胱甘肽%过氧化氢酶%内皮素%肿瘤坏死因子
急性低壓缺氧%超氧化物歧化酶%丙二醛%還原型穀胱甘肽%過氧化氫酶%內皮素%腫瘤壞死因子
급성저압결양%초양화물기화매%병이철%환원형곡광감태%과양화경매%내피소%종류배사인자
Acure hypobaric hypoxia%Superoxide dismutase%Malondialdehyde%Glutathione%Catalase%Endothelin%Tumor necrosis factor alpha
目的:观察急性低压缺氧对大鼠肾组织中超氧化物歧化酶(SOD)、丙二醛(MDA)、还原型谷胱甘肽( GSH)、过氧化氢酶( CAT)及内皮素( ET-1)和肿瘤坏死因子( TNF-α)的影响。方法将24只雄性Wistar大鼠,体重180~220 g,随机分成地面对照组和急性低压缺氧组,急性低压缺氧组又分成缺氧1组和缺氧2组,每组8只。急性低压缺氧后10 min和24 h处死动物,迅速取出肾脏进行生化指标的检测,并采用免疫组织化学方法观察肾组织内皮素( ET-1)和肿瘤坏死因子( TNF-α)的表达情况。结果急性低压缺氧后,大鼠肾组织中SOD活性明显下降(P <0.01),缺氧1组CAT活性极显著降低(P <0.01),缺氧2组GSH活性显著降低(P <0.05),但MDA含量无明显变化( P >0.05)。免疫组织化学染色显示,ET-1和TNF-α表达均明显增强,24 h 后表达减弱。结论SOD、CAT和GSH活性明显下降及ET-1及TNF-α表达明显增强,可能参与了缺氧性肾损伤的病理过程。
目的:觀察急性低壓缺氧對大鼠腎組織中超氧化物歧化酶(SOD)、丙二醛(MDA)、還原型穀胱甘肽( GSH)、過氧化氫酶( CAT)及內皮素( ET-1)和腫瘤壞死因子( TNF-α)的影響。方法將24隻雄性Wistar大鼠,體重180~220 g,隨機分成地麵對照組和急性低壓缺氧組,急性低壓缺氧組又分成缺氧1組和缺氧2組,每組8隻。急性低壓缺氧後10 min和24 h處死動物,迅速取齣腎髒進行生化指標的檢測,併採用免疫組織化學方法觀察腎組織內皮素( ET-1)和腫瘤壞死因子( TNF-α)的錶達情況。結果急性低壓缺氧後,大鼠腎組織中SOD活性明顯下降(P <0.01),缺氧1組CAT活性極顯著降低(P <0.01),缺氧2組GSH活性顯著降低(P <0.05),但MDA含量無明顯變化( P >0.05)。免疫組織化學染色顯示,ET-1和TNF-α錶達均明顯增彊,24 h 後錶達減弱。結論SOD、CAT和GSH活性明顯下降及ET-1及TNF-α錶達明顯增彊,可能參與瞭缺氧性腎損傷的病理過程。
목적:관찰급성저압결양대대서신조직중초양화물기화매(SOD)、병이철(MDA)、환원형곡광감태( GSH)、과양화경매( CAT)급내피소( ET-1)화종류배사인자( TNF-α)적영향。방법장24지웅성Wistar대서,체중180~220 g,수궤분성지면대조조화급성저압결양조,급성저압결양조우분성결양1조화결양2조,매조8지。급성저압결양후10 min화24 h처사동물,신속취출신장진행생화지표적검측,병채용면역조직화학방법관찰신조직내피소( ET-1)화종류배사인자( TNF-α)적표체정황。결과급성저압결양후,대서신조직중SOD활성명현하강(P <0.01),결양1조CAT활성겁현저강저(P <0.01),결양2조GSH활성현저강저(P <0.05),단MDA함량무명현변화( P >0.05)。면역조직화학염색현시,ET-1화TNF-α표체균명현증강,24 h 후표체감약。결론SOD、CAT화GSH활성명현하강급ET-1급TNF-α표체명현증강,가능삼여료결양성신손상적병리과정。
Objective To observe the effect of superoxide dismutase ( SOD ) , malondialdehyde ( MDA ) , glutathione (GSH), catalase (CAT) and endothelin (ET-1) and tumor necrosis factor alpha (TNF-α) on rat renal tissue under acute hypoxia .Methods 24 male Wistar rats, weight 180~220 g, were randomly divided into control group and acute hypobaric hypoxia group .Acute hypoxia group was divided into 2 groups hypoxia 1 and hypoxia 2, 8 rats for each group.After acute hypobaric hypoxia 10min and 24h, rats were sacrificed.The left removed kidneys were analyzed for biochemical indexes , and the right parts were observed by immunohistochemistry to evaluate the expression level of renal endothelin (ET-1) and tumor necrosis factor alpha (TNF-α).Results After acute hypobaric hypoxia , the activity of SOD of the rats kidney was greatly decreased (P <0.01), CAT activity of hypoxia group 1 was significantly decreased (P <0.01), GSH activity of hypoxia group 2 was significantly decreased (P <0.05), but the MDA content had no obvious change ( P >0.05).The immunohistochemical staining showed that , the expression level of ET-1 and TNF-αwas increased remarkably, but it was reduced after 24 h.Conclusion The obviously decreased activity of SOD , CAT, GSH and significantly increased expression of ET-1 and TNF-α, may be involved in the pathogenesis of renal hypoxic injury .