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胰激肽原酶对自发性高血压大鼠心肌血管及血管周围胶原重构的影响 被引量:1

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摘要 目的探讨胰激肽原酶对自发性高血压大鼠(SHR)血压、心肌血管及血管周围胶原的影响。方法雄性15周龄SHR 24只,随机分成SHR组、胰激肽原酶小剂量组(7.2 U.kg-1.d-1)、胰激肽原酶大剂量组(14.4 U.kg-1.d-1),每组8只。另取8只雄性15周龄W istar大鼠作为正常血压对照组。胰激肽原酶腹腔注射,SHR组和正常血压对照组给予0.9%NaC l溶液腹腔注射(2 m l.kg-1.d-1)。实验4 w后行颈动脉插管测量各组收缩压(SBP),然后处死动物,测量各组左心室重量指数(LVM I),心肌组织经HE染色做形态学观察,经VG染色测定心肌胶原体积比例(CVF)、心肌血管周围胶原与管腔面积的比例(PVCA)。结果SHR组的SBP、LVM I、CVF、PVCA均增高,与正常血压对照组比较,差异具有显著性(P<0.05)。用药4 w后,胰激肽原酶组SBP、LVM I、CVF及PVCA均较SHR组显著下降,两组比较差异均具有显著性(P<0.05);除SBP外的各项指标呈剂量依赖性的下降,胰激肽原酶大、小剂量组间比较,差异有显著性(P<0.05)。结论胰激肽原酶具有降低SHR血压和逆转心肌血管及间质胶原重构的作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2006年第8期1083-1084,共2页 Chinese Journal of Gerontology
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