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牛磺酸对大鼠肢体缺血再灌注后肝脏损伤的保护效应 被引量:3

Protective effect of taurine against liver injury after limb ischemia-reperfusion in rats
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摘要 目的:观察大鼠肢体缺血再灌注后肝脏的损伤性变化,以及牛磺酸对肝脏损伤性变化的保护效应,探讨牛磺酸对大鼠肢体缺血再灌注后肝脏功能保护作用的可能机制.方法:实验用W istar大鼠30只,随机分为对照(control,C)组,缺血再灌注(ischem ia reperfusion,IR)组和牛磺酸+缺血再灌注(taurine+ischem ia reperfusion,TR)组,每组10只.观察缺血4 h再灌注4 h各组大鼠血浆中XOD,LDH,MDA,AST,ALT和SOD的变化;观察肝组织XOD,MDA,ROS,MPO和Ca2+的变化;观察肝线粒体GSH-PX和Ca2+的变化.结果:单纯肢体缺血再灌注组大鼠血浆中LDH[(190.16±13.36)μkat/L],XOD[(758.82±151.53)nkat/L],MDA[(5.19±0.67)nmol/L],ALT[(78.40±6.45)nkat/L],AST[(47.70±4.47)nkat/L]等较正常对照组血浆中LDH[(122.39±14.87)μkat/L],XOD[(543.61±43.51)μkat/kg],MDA[(1.27±0.21)nmol/L],ALT[(20.50±3.70)nkat/L],AST[(25.25±2.98)nkat/L]明显增加,而SOD[(1.30±0.15)μkat/L]较对照组(1.80±0.16)μkat/L明显降低;单纯肢体缺血再灌注组大鼠肝组织XOD[(104.69±12.34)μkat/Kg],MDA[(2.66±0.08)nmol/L],ROS[(771.65±100.69)μkat/L],MPO(0.47±0.04),[Ca2+][(0.248±0.050)mmol/L]较正常对照组肝组织XOD[(59.01±10.50)μkat/kg],MDA[(1.29±0.14)nmol/L],ROS[(606.45±52.01)μkat/L],MPO[(0.28±0.06)],[Ca2+][(0.123±0.014)mmol/L]均明显增加;缺血再灌注组大鼠肝线粒体GSH-Px活性[(20.34±4.67)nkat/L]与正常对照组[(31.17±11.50)nkat/L]比较明显降低,而[Ca2+]浓度[(0.38±0.06)mmol/L]则高于正常对照组[(0.14±0.03)mmol/L].牛磺酸+缺血再灌注组大鼠血浆中LDH[(158.29±4.87)μkat/L],XOD[(758.82±151.53)nkat/L],MDA[(2.81±0.19)nmol/L],ALT[(64.40±9.05)nkat/L],AST[(38.70±8.10)nkat/L]较单纯缺血再灌注组明显降低,而SOD[(1.50±0.17)μkat/L]则增加;肝组织XOD[(94.19±13.50)μkat/L],MDA[(1.67±0.12)nmol/L],ROS[(710.81±55.34)μkat/L],MPO(0.36±0.04),[Ca2+][(0.192±0.426)mmol/L]等指标也较单纯缺血再灌注组明显降低,此外牛磺酸+缺血再灌注组大鼠肝线粒体GSH-Px活性[(22.50 AIM: To observe the liver injury and investigate the protective effect of taurine on the liver function after limb ischemiareperfusion. METHODS: Thirty Wistar rats were randomly divided into control group, ischemia-reperfusion ( IR ) group and taurine + ischemia-reperfusion (TR) group (n = 10 per group). The values of XOD, LDH, MDA, AST, ALT and SOD in plasma were respectively measured after 4 h limb ischemia and 4 h reperfusion in each group. XOD, MDA, ROS, MPO and [ Ca^2+] in the liver tissues and GSH-PX, [ Ca^2+] in the liver mitochondria were observed. RESULTS: In IR group compared with the control group, the values of LDH [ ( 190.16 ± 13.36 ) μkat/L vs (122.39 ±14.87) μkat/L], XOD [ (758.82 ±151.53) nkat/L vs (543.61 ±43.51) nkat/L], MDA [(5.19 ±0.67) nmol/L vs (1.27±0.21) nmol/L] , ALT [(78.40±6.45) nkat/L vs (20.50 ±3.70) nkat/L], AST [(47.70 ±4.47) nkat/L vs (25.25 ±2.98) nkat/L] in plasma increased, but SOD [ ( 1.30 ±0.15) μkat/L vs (1.80 ±0. 16) μkat/L ] reduced, XOD [(104.69± 12.34) μat/kg vs (59.01 ± 10.50) μat/kg], MDA [ (2.66 ± 0.08 ) nmol/L vs ( 1.29 ± 0.14) nmol/L], ROS [(771.65±100.69) μkat/L vs (606.45 ±52.01) μat/L], MPO (0.47 ±0.04 vs 0.28 ±0.06), [Ca^2+] [ (0.248 ±0.050) mmol/L vs (0. 123 ± 0. 014 ) mmol/L] in the liver tissues increased, GSH-Px [ (20. 34 ± 4. 67 ) nkat/L vs (31. 17 ± 11.50) nkat/L] in the liver mitochondria were obviously reduced, but [ Ca^2+] [ (0.38 ± 0.06) mmol/L vs (0. 14 ± 0.03 ) mmol/L] increased; In TR group compared with the IR group, the values of LDH [ (158.29 ±4.87) trkat/L], XOD [ (758.82±151.53) nkat/L], MDA [(2. 81 ±0. 19) nmol/L], ALT [ (64.40 ± 9.05) nkat/L], AST [ (38.70 ± 8. 10) nkat/L] were reduced, but SOD [ ( 1.50 ± 0. 17) μat/L] in plasma of TR group increased; the values of XOD [ (94.19 ± 13.50) μat/ El, MDA [(1.67 ±0. 12) nmol/L], ROS [(710.81 ±55
出处 《第四军医大学学报》 北大核心 2006年第22期2047-2050,共4页 Journal of the Fourth Military Medical University
基金 河北省教育厅科研基金资助(2001135)
关键词 再灌注损伤 肝功能 四肢 牛磺酸 reperfusion injury liver function extremities taurine
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