夏至草醇提物对急性微循环障碍大鼠血液流变性异常的干预作用

目的 观察夏至草醇提物对高分子右旋糖苷(Dextran 500)致急性微循环障碍(AMD)大鼠血液流变性的影响.方法 Wistar雄性大鼠随机分为夏至草组、模型组和对照组.前二组静注10%Dextran 500(10mL/kg)复制急性微循环障碍模型(对照组以等量生理盐水代替).6min后,夏至草组自颈静脉缓慢推注夏至草醇提物(1g/mL.6g/kg),其它两组以等量生理盐水代替.40min后,观察全血粘度、血浆粘度、红细胞变形性等血液流变学指标.结果 ①模型组在高、中、低切变率下的全血粘度、血浆粘度、全血相对粘度及红细胞压积均显著高于对照组;夏至草组不同切变率下的全血粘度、血浆粘度、全血相对粘度及全血还原粘度、红细胞压积等指标均显著低于模型组,除全血相对粘度及全血还原粘度显著低于对照组外,其它指标与对照组均无统计学差异.②模型组及夏至草组的血沉长度、红细胞电泳时间均长于对照组;模型组及夏至草组的红细胞电泳长度与迁移率均低于对照组;模型组在不同切变率下的变形性与对照组无统计学差异,而夏至草组在不同切变率下的红细胞变形性均显著高于对照组及模型组.结论 夏至草醇提物能明显降低Dextran 500致AMD大鼠的全血粘度和血浆粘度,提高红细胞变形能力.

Effects of Ethanol Extract from Mrrubium Incisum on Abnormal Hemorrheological Properties in Acute Microcirculatory Disturbance in Rats

Objective To observe the effects of ethanol extract from Mrrubium Incisum(EEMI) on hemorrheological properties in acute microcirculatory disturbance(AMD) rats induced by Dextran 500.Methods Male Wistar rats were randomly divided into three groups: Mrrubium Incisum group,model group and control group.The acute microcirculatory disturbance model was established by intravenously administrating Dextran 500(10mL/ kg) in Mrrubium Incisum group and model group,and Dextran 500 was replaced by equivalent normal sali...