桃仁提取物对不同病因所致大鼠血液循环障碍的影响

目的 研究桃仁提取物对寒凝血瘀证(寒证)和瘀热互结证(热证)大鼠血液循环障碍的不同药效.方法 80只大鼠随机均分为寒证对照组、寒证模型组、桃仁提取物(8 g/kg)组、川芎(8g/kg)阳性对照组,以及热证对照组、热证模型组、桃仁提取物(8 g/kg)组、丹参(14 g/kg)阳性对照组.分别采用全身低温冷冻和注射角叉菜胶法建立寒证、热证大鼠模型,造模同时各给药组每天ig给药1次,连续给药7d.检测微循环血流速率、全血黏度:取大鼠心、肺、肝、肾、牌进行组织病理学观察,病理图像分析软件测量微小血管管径,观察血栓、组织损伤等情况.结果 与模型组相比,桃仁提取物能明显加快寒证和热证大鼠的血流速率(P＜0.05),降低全血黏度(P＜0.05),使寒证大鼠小动脉收缩、热证大鼠小动脉舒张(P＜0.05)；根据器官损伤严重度评分得知桃仁提取物可减轻寒证大鼠心、肺、肝、肾器官的损伤(P＜ 0.05),但仅能减轻热证大鼠的肾损伤(P＜0.05).结论 桃仁提取物能改善寒凝血瘀证和瘀热互结证大鼠的血液循环障碍；对不同证型大鼠小动脉的舒缩状态和心、肿、肝、肾的保护作用不同.

Pharmacodynamic effects of Persicae Semen extract on blood circulation disorder of rats induced by different symtoms

Objective To study the different pharmacodynamic effects of Persicae Semen extract (PSE) on the blood circulation disorder of rats induced by cold congeal and blood stasis syndrome (cold syndrome, CS), and heat congeal and blood stasis syndrome (heat syndrome, HS). Methods Eighty rats were randomly divided into eight groups including normal control group of CS, model group of CS, PSE (8 g/kg) group of CS, Chanxiong Rhizoma (8 g/kg) group of CS, normal control group of HS, model group of HS, PSE (8 g/kg) group of HS, and Salviae Miltiorrhizae Radix (14 g/kg) group of HS. The two rat models were established by freezing and injection of carrageenan solution. The rats in each group were ig administered once daily for 7 d. The blood flow velocity (Fve) and blood viscosity (Vis) were detected; The organs (such as heart, lung, liver, kidney, and spleen) were taken and observed by histopathological analysis; The diameters of tiny blood vessels were measured by pathology image analysis software, and the thrombosis and tissue injury were observed. Results PSE increased Fve but decreased Vis in CS and HS rats (P < 0.05), made the small artery in CS rats systolic, while that in HS rats diastolic (P < 0.05). The organ injury severity score indicated PSE could attenuate the injury of many organs (such as heart, lung, liver, and kidney) in CS rats,but only attenuated the injury of kidney in HS rats (P < 0.05). Conclusion PSE could improve the blood circulation disorder induced by CS and HS. The different effects of PSE on the two kinds of syndromes include the regulation of the diastolic and systolic states of rat small artery and the different protection of rat organs.