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乌司他丁量效关系对心肌保护作用影响的实验研究 被引量:4

Influence of dose-effect relationship of ulinastatin on myocardial protection
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摘要 目的:探讨乌司他丁(UTI)量效关系对心肌保护作用的影响及其可能机制。方法:腹腔注射阿霉素制作大鼠扩张型心肌病动物模型,40只SD扩张型心肌病模型大鼠被随机均分为空白对照组(给予生理盐水)、低剂量组(UTI 10000U/kg)、中等剂量组(UTI 30000U/kg)、高剂量组(UTI 60000U/kg),连续给药2周,实验前后分别行心脏超声检查,测定左室内径、左室射血分数(LVEF),以黄嘌呤氧化酶法测定血浆超氧化物歧化酶(SOD)水平,氯胺T氧化法测定心肌局部组织羟脯氨酸(Hyp)含量,评估心肌间质纤维化程度。结果:与空白对照组、低和中等剂量组相比,高剂量组治疗后LVEF[(32.49±1.29)%、(53.22±2.13)%、(56.91±2.04)%比(62.61±2.37)%]、SOD水平[(4.06±0.71)U/ml、(5.25±0.18)U/ml、(5.79±0.69)U/ml比(6.96±0.77)U/ml]明显升高(P均<0.05);左室舒张末期内径[LVEDd,(1.53±0.13)mm、(1.21±0.02)mm、(1.21±0.09)mm比(1.01±0.01)mm]明显减小、心肌局部组织Hyp含量[(40.16±2.31)μg/mg、(34.24±1.98)μg/mg、(22.79±1.69)μg/mg比(19.84±1.47)μg/mg]明显降低(P均<0.05)。与空白对照组比较,UTI低、中、高剂量组左室收缩末期内径[LVESd,(1.23±0.02)mm、(0.98±0.04)mm、(0.98±0.12)mm比(0.99±0.03)mm]显著减小(P均<0.05)。结论:大剂量乌司他丁心肌保护作用更好,原因可能与抑制心室重塑、拮抗氧自由基有关。 Objective: To explore influence of dose-effect relationship of ulinastatin (UTI) on myocardial protection and its possible mechanism. Methods: Rat model of dilated cardiomyopathy was established by intraperitoneal injec- tion of Adriamycin. A total of 40 SD rats with dilated cardiomyopathy were randomly and equally divided into blank control group (receivednormal saline), UTI low dose group (received UTI 10000 U/kg), UTI medium dose group (received UTI 30000 U/kg) and UTI high dose group (received UTI 60000 U/kg), then they were treated for two weeks. Echocardiography was used to measure left ventricular diameter, left ventricular ejection fraction (LVEF) ; the xanthine oxidase method was used to measure plasma level of superoxide dismutase (SOD), chloramine-T oxida- tion method was used to measure hydroxyproline (Hyp) concentration in partial tissue of myocardium to evaluate de- gree of myocardial interstitial fibrosis before and after experiment. Results: Compared with blank control, UTI low and medium dose group after treatment, there were significant increase in LVEF [ (32.49 ± 1.29) %, (53.22± 2.13)%, (56.91±2.04)% vs. (62.61±2.37)%] and SOD level [ (4.06±0.71) U/ml, (5.25±0.18) U/ml, (5.79 ±0.69) U/ml vs. (6.96 ± 0.77) U/ml], P〈0.05 all and significant decrease in left ventricular end-diastolic dimension [LVEDd, (1.53± 0.13) mm, (1.21 ± 0.02) mm, (1.21 ± 0.09) mm vs. (1.01 ±0.01) mm], and Hyp concentration [ (40.16±2.31) μg/mg, (34.24± 1.98) μg/mg, (22.79 ± 1.69) t^g/mg vs. (19.84±1.47) μg/mg] in partial tissue of myocardium in UTI high dose group (P〈0.05 all). Compared with blank control, left ventricu-lar end-systolic dimension ELVESd, (1.23± 0.02) mm, (0. 98± 0.04) mm, (0.98 ±0. 12) mm vs. (0.99 ±0. 03) mm] significant decreased in UTI low, medium and high dose group after treatment (P〈0.05 all). Conclusion: Large dose of ulinastatin possesses better myocardial protection effect, which may be related with inhibition of ven- tricular remodeling and antagonism of oxygen radical.
出处 《心血管康复医学杂志》 CAS 2013年第2期163-166,共4页 Chinese Journal of Cardiovascular Rehabilitation Medicine
关键词 心肌 剂量效应关系 药物 乌司他丁 Myocardium Dose-response relationship, drug Ulinastatin
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  • 1施贤清,王宇辉,李建权,胡远东,成小蓉,李琨.不同剂量乌司他丁对体外循环术后肺保护的临床研究[J].四川大学学报(医学版),2013,44(5):752-755. 被引量:14
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  • 4Oliver A.R. Binns,Nuno F. DeLima,Scott A. Buchanan,et al. Neutrophil endopeptidase inhibitor improves pulmonary func- tion during reperfusion after eighteen-bout" preservation [J]. The Journal of Thoracic and Cardiovascular Surgery,2014,15 (3):472-473.
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  • 10刘淑红,崔朝勃,王晶,亢宏山,王会青,于立杰,吴颖,丁方.乌司他丁治疗重症肺炎的临床研究[J].中国急救医学,2010,30(6):508-511. 被引量:26

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