摘要
目的 探讨生长停滞特异性蛋白6(growth arrest-specific protein 6,Gas6)对脓毒症小鼠凝血功能的影响.方法 建立盲肠结扎穿孔(cecal ligation and puncture,CLP)诱导的脓毒症小鼠模型.将120只雄性清洁级BALB/c小鼠随机(随机数字法)分为假手术组、CLP脓毒症组、CLP脓毒症+生理盐水组、CLP脓毒症+Gas6(1μg)组、CLP脓毒症+Gas6(3μg)组和CLP脓毒症+Gas6(6μg)组,每组20只.经过不同处理后检测24 h凝血酶原时间(PT)、凝血酶时间(TT)、活化部分凝血活酶时间(APTT)、纤维蛋白原(Fbg)、D-二聚体(DD)和血小板(PLT)计数,采用ELISA检测血浆组织因子(TF)浓度、P选择素和细胞间黏附分子(ICAM-1)的变化.数据采用SPSS 18.0统计软件,两组样本比较采用独立样本t检验,多组间比较采用单因素方差分析和Bonferroni检验.结果 与假手术组比较,CLP脓毒症组血浆PT、TT、APTT、DD、TF、P选择素和ICAM-1延长或增高,Fbg和PLT降低(P=0.000).尾静脉注射rmGas6(1、3、6μg)后脓毒症小鼠血浆PT (P =0.000)、TT (P =0.000)、APTT (P=0.000)、Fbg (P =0.000)、DD(P =0.0002)、PLT (P=0.000)、IF (P=0.0002)、P选择素(P=0.001)和ICAM-1 (P=0.0004)延长或增高.结论 Gas6可能通过活化血管内皮细胞、上调脓毒症小鼠IF水平进一步激活凝血系统,加剧凝血功能障碍.
Objective To investigate the effects of growth arrest-specific protein 6 on blood coagulation in septic mice.Methods Septic mice model was induced by cecal ligation and puncture (CLP).One hundred and twenty male BALB/c mice of clean grade were randomly (random number) divided into six groups : sham operation group (n =20), CLP group (n =20), CLP + vehicle group (n =20), CLP+Gas6 (Growth Arrest-Specific Protein 6) (1 μg) group (n=20), CLP+Gas6 (3 μg) group (n =20) and CLP + Gas6 (6 μg) group (n =20).All the survived mice were sacrificed after 24 h of operation.Plasma prothrombin time (PT), thrombin time (TT), active partial thrombo-plastin time (APTT), fibrinogen (Fbg), d-dimer (DD) and Platelets (PLT) count was measured.Plasma tissue factor (TF), P-selectin, Intercellular Adhesion Molecule 1 (ICAM-1) was measured by ELISA method.Statistical analyses were performed using one-way analysis of variance (SPSS18.0, Chicago, USA) test followed by Bonferroni test to compare three or more groups or by Student' s t-test to compare two groups.Results Plasma PT, TT, APTT, DD, TF, P-selectin and ICAM-1 in CLP group was longer or higher than that in sham group (P =0.000), while Fbg and PLT in CLP + vehicle group were lower than that in sham group (P =0.000).Treatment with rmGas6 significantly increase plasma PT, TT, APTT, Fbg, DD, PLT, TF, P-selectin and ICAM-1 in septic mice (P 〈 0.01).Conclusions Gas6 can activate coagulation system and aggravate coagulation dysfunction in septic mices, which may partially through activate endothelial cells and up-regulate TF levels.
出处
《中华急诊医学杂志》
CAS
CSCD
北大核心
2015年第12期1373-1378,共6页
Chinese Journal of Emergency Medicine
基金
国家自然科学基金(81401621)
浙江省自然科学基金(LY13H150004)
浙江省中医药优秀青年人才基金(2013ZQ023)
浙江省医学创新学科建设计划(11-CX26)
浙江省中医药重点学科计划(2012-XK-A28)
浙江省“十二五”重点学科建设项目(2012-207)
关键词
生长停滞特异基因6
脓毒症
凝血功能
内皮细胞
血小板
组织因子
P选择素
细胞间黏附分子
Growth arrest-specific protein 6
Sepsis
Blood coagulation
Endothelial Cells
BloodPlatelets
Tissue factor
P-selectin
Intercellular Adhesion Molecule 1