枯否细胞通过组织因子对大鼠急性胰腺炎凝血系统变化的影响

被引:5
作者
幸定培 [1 ]
龚建平 [1 ]
冯虎翼 [2 ]
吴念 [2 ]
吴伟 [1 ]
机构
[1] 重庆医科大学附属第二医院肝胆外科
[2] 重庆市第五人民医院肝胆外科
关键词
枯否细胞; 组织因子; 急性胰腺炎; 凝血象;
D O I
10.13406/j.cnki.cyxb.000419
中图分类号
R576 [胰腺疾病];
学科分类号
100201 [内科学];
摘要
目的:观察大鼠急性胰腺炎(acute pancreatitis,AP)组织因子(tissue factor,TF)及凝血系统的变化,探讨枯否细胞(kupffer cells,KCs)通过组织因子对大鼠AP凝血系统的作用。方法:108只SD大鼠完全随机分为假手术(sham operation,SO)组、轻症胰腺炎(mild acute pancreatitis,MAP)组、重症胰腺炎(severe acute pancreatitis,SAP)组、SO+氯化钆(Gd Cl3)组、MAP+Gd Cl3组、SAP+Gd Cl3组。Gd Cl3预处理组在诱发AP模型前24 h予尾静脉注射Gd Cl3(10 mg/kg,0.1 ml),分别用1.5%和5%的牛黄胆酸钠胰胆管逆行注射诱导MAP和SAP模型。建模后或假手术组分别于术后6、12、24 h处死大鼠,检测其血清中淀粉酶及凝血项的变化;ELISA法检测血清中TF的含量;分离并培养KCs,采用Western blot法检测其TF的蛋白含量;免疫组化检测肝脏中TF蛋白的表达;HE染色检测胰腺组织病理损伤情况。结果:MAP和SAP组大鼠血清中淀粉酶含量明显高于SO组(P<0.01),与MAP+Gd Cl3组、SAP+Gd Cl3组各相应时间点比较无明显差异。同时间点MAP组和SAP组较SO组血清中TF含量明显升高,MAP+Gd Cl3组和SAP+Gd Cl3组较MAP组和SAP组明显降低(P<0.05)。MAP和SAP组大鼠肝脏中TF蛋白表达较SO组表达明显增加。MAP+Gd Cl3和SAP+Gd Cl3组KCs中TF蛋白含量较MAP组和SAP组明显降低(P<0.05)。SAP组较MAP和SO组大鼠血清凝血酶原时间(prothrombin time,PT)、活化部分凝血活酶时间(activated partial thromboplastin time,APTT)、纤维蛋白原浓度(fibrinogen,FIB)明显升高,SAP+Gd Cl3组较SAP明显降低(P<0.05)。大鼠胰腺病理切片显示,MAP组胰腺间质水肿,SAP组胰腺呈凝固性坏死,伴有大量炎症细胞浸润,MAP+Gd Cl3和SAP+Gd Cl3组分别较MAP和SAP组病理损伤明显减轻。结论:AP时KCs中TF表达明显增加,并能导致凝血象的改变,抑制KCs功能可有效降低AP时TF的表达,减少凝血象的改变,从一定程度上可降低AP的发生和发展。
引用
收藏
页码:329 / 334
页数:6
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