孙络疏失(微血管缺血)的中医微观病理特征及通心络干预研究Traditional Chinese Medicine Microscopic Pathological Characteristics of Collateral Rarefaction(Microvascular Ischemia)and the Intervention of Tongxinluo
张俊修,郭云霞,张印,李绍旦,杨明会
摘要(Abstract):
目的阐明孙络疏失的中医微观病理特征及通心络的干预效果。方法 50只雄性SD大鼠随机均分为空白组,模型组,通心络低、中、高剂量组。通心络低、中、高剂量组分别应用400、800、1 600 mg/kg通心络超微粉灌胃给药,空白组和模型组予等量0.9%氯化钠注射液灌胃,连续7 d。第7天灌胃4 h后,麻醉大鼠,腹部正中做纵向切口,采用夹闭肠系膜上动静脉30 min后再灌注60 min的方法制作大鼠肠系膜微血管缺血模型(空白组不夹闭)。应用正立共聚焦显微镜观察并记录造模前后肠系膜微血管参数,比较造模前后微血管血流状态、侧支数目、侧支长度和出血的情况。应用SPSS软件进行统计学分析,应用主成分分析方法进行数学模型分析。结果空白组微血管无显著异常,模型组微血管侧支数量减少、侧支长度减少,并出现出血情况及微血管内血流速度减慢,结果与空白组比较差异明显(P <0.05);通心络能显著抑制微血管侧支数量、长度的减少,抑制出血趋势,维持微血管内血液正常流动,结果与模型组比较差异明显(P <0.05)。数学模型分析结果显示,模型组主成分得分的分布较正常组差异大,通心络干预各组有向空白组恢复的趋势,主要病理特征指标为:微血管长度减少比例。结论孙络疏失以孙络数目的减少、孙络运行气血功能丧失为特征,伴有气血溢出孙络外的表现。通心络干预能够减弱孙络疏失的病理变化。
关键词(KeyWords): 孙络疏失;微血管;肠系膜;通心络;病理特征;大鼠
基金项目(Foundation): 国家973计划项目资助(2012CB518601)
作者(Author): 张俊修,郭云霞,张印,李绍旦,杨明会
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