创伤性深静脉血栓模型大鼠及精氨酸酶Ⅰ表达的变化(英文)

Changes of arginase Ⅰ expression in rat deep venous thrombosis models

背景:近期相关研究发现精氨酸酶Ⅰ与多种心血管疾病发生发展有关, 但国内外相关研究大都集中在动脉, 并未对静脉性疾病, 进行广泛研究。目的:观察深静脉血栓形成模型大鼠精氨酸酶Ⅰ的表达变化, 分析其在深静脉血栓形成过程中可能发挥的作用。方法:将100只SD大鼠随机分为正常对照组和模型组,采用血管钳夹股静脉+双后肢髋人字石膏外固定制动的方式建立大鼠创伤性深静脉血栓模型, 根据不同的观察时间点和血栓形成的不同病理生理过程情况分为血栓形成前组、血栓形成高峰期组和无血栓形成组,提取各组血液RNA,应用实时荧光定量 PCR 检测精氨酸酶Ⅰ在各组血细胞中的表达变化。结果与结论:血栓形成高峰期组精氨酸酶Ⅰ表达量比其他3组明显上升(P <0.01),正常对照组、血栓形成前组和无血栓形成组精氨酸酶Ⅰ表达差异无显著性意义 (P>0.05)。提示精氨酸酶Ⅰ与深静脉血栓形成密切相关。

BACKGROUND：Studies in recent years have demonstrated that arginase Ⅰ contribute to the process of numerous cardiovascular diseases,however,most of studies focus on arteries,few regarding venous diseases.OBJECTIVE：To explore the changes of arginase Ⅰ expression in rat traumatic deep venous thrombosis models,and to analyze the possible function of arginase Ⅰ in deep venous thrombosis formation.METHODS：Totally 100 Sprague Dawley rats were randomly divided into the control and model groups.Traumatic deep venous thrombosis models were established by clamping the femoral vein and immobilizing the bilateral hind limbs（hip spica cast fixation）,and assigned into initial thrombosis,peak thrombosis and non-thrombosis groups according to different observing time points and pathophysiological situations of thrombosis.Whole blood RNA of each group was extracted,and the change of arginase I expression in blood cells of each group was detected by real-time PCR.RESULTS AND CONCLUSUON：Expression of arginase Ⅰ in the peak thrombosis group was significantly increased compared with other 3 groups（P 0.01）.There were no significances among control,initial thrombosis and non-thrombosis groups（P 0.05）.The finding demonstrated that arginase Ⅰ is closely related to deep vein thrombosis formation.