羌菖合剂对脑供血不足大鼠外周血小板参数的干预

背景:有研究发现,羌菖合剂可防治脑供血不足引起的脑损伤,并可改善血液流变学指标。目的:观察羌菖合剂对脑供血不足大鼠外周血小板的干预结果。设计:完全随机分组设计,对照实验。单位:解放军成都军区总医院中心实验室。材料:选用SD大白鼠60只,雌雄不拘,体质量150～170g。大鼠被随机分为3组:假手术组(n=8),对照组(n=18),羌菖合剂治疗组(n=34)。羌菖合剂:成分为羌活、石菖蒲,将药物等量分2次煎煮,每次30min微火煮沸,将两次滤液混合,过滤,浓缩至含生药1g/mL煎剂。方法:实验于2004-07/09在解放军成都军区总医院中心实验室完成。对照组和羌菖合剂治疗组:结扎大鼠右侧颈总动脉造成脑供血不足。假手术组:只分离右侧颈总动脉,未结扎。假手术组在造模同时灌胃等体积生理盐水3d;对照组在造模同时灌胃等体积生理盐水3和7d(n=10,8);羌菖合剂治疗组在造模同时灌胃羌菖合剂10g/(kg·d)连续3d(n=10),3.3,6.7,10.0g/(kg·d)连续7d(n=8,8,8)。采用Bakeman血细胞自动分析仪检测各组大鼠外周血血小板参数(血小板计数、平均血小板体积、血小板分布宽度、大血小板比率)。计量资料差异比较采用t检验。主要观察指标:羌菖合剂对脑供血不足大鼠外周血血小板参数的影响。结果:①术后3d,对照组血小板数与假手术组比较,差异不明显(P>0.05),而平均血小板体积、血小板分布宽度和大血小板比率明显高于假手术组(P<0.01);羌菖合剂10g/kg治疗后平均血小板体积、血小板分布宽度和大血小板比率明显低于对照组(P<0.01),而与假手术组相近。②术后7d,对照组平均血小板体积、血小板分布宽度和大血小板比率已恢复到接近假手术组,而大血小板比率则明显低于对照组术后3d(P<0.05),羌菖合剂3.3,6.7,10g/kg治疗后大血小板比率则明显低于对照组术后3d(P<0.01)。结论:大脑供血不足可引起实验大鼠外周血小板参数异常改变,应用羌菖合剂可改善此种改变。

Effect of Qiang Chang Heji on peripheral platelet in rats with experimental right brain insufficient blood supply

BACKGROUND: It has been shown that Qiang Chang Heji (QCHJ) hadsome protective effects in rats with experimental brain injuries and couldimprove some hemorheological indices.OBJECTIVE: To observe effects of QCHJ on peripheral platelet in rats with experimental right brain insufficiency of blood supply.DESIGN: A randomized and controlled experiment.SETTING: Central Laboratory, General Hospital of Chengdu Military Area Command of Chinese PLA.MATERIALS: Totally 60 SD white rats (either sex, werghing from 150 g to 170 g) were used. They were divided randomly into 3 groups: sham-operation group (n=8), control group (n=18) and treatment group (n=34).QCHJ:Chinese herbal mixture, equal dosage of both Rhizoma seu Radix Notopterygii and Rhizoma Acori Graminei were decocted twice, each for 30minutes with mild fire after boiling. The two decoctions were mixed and concentrated to 1g raw herb per milliliter.METHODS: The experiment was carried out in Central Laboratory, General Hospital of Chengdu Military Area Command of Chinese PLA from July to September 2004. The right carotid artery (CA) of rats were separated,ligaturewas done in control and treatment groups ;but no ligature in sham operation group. Medication (po. by gastric perfusion) was given since the day of operation. In treatment group, 10 rats took QCHJ 10 g/kg per day for3 days; and others took 3.3, 6.7, 10 g/kg per day for 7 days respectively, (8 rats for each dose). In control group, equal volume physiological saline was given daily for 3 or 7 days. In sham operation group, equal volume physiological saline was given daily for 3 days. On the 3rd and 7th days after operation, platelet count (Plt), mean platelet volume (MPV), platelet distribution width (PDW) and platelet-large cell ratio (P-LCR) of platelet were determined with a Bakeman Blood Cell Auto-analyzer. t test was used to compare the difference.MAIN OUTCOME MEASURES:Effects of QCHJ on peripheral platelet in rats with brain insufficiency of blood in brain.RESULTS: ①Day 3 after operation: PLt were similar between control group and sham-operation group (P ＞ 0.05); MPV, PDW and P-LCR were higher in control group than that in sham operation group (P ＜ 0.01); in QCHJ treated group (10 g/kg per day), MPV, PDW, and P-LCR were significantly lower than that in control group (P ＜ 0.01), and they were similar to that in sham operation group. ② Day 7 after operation: MPV, PDW, and P-LCR in control group were similar to that in sham operation group. In addition, P-LCR in control and QCHJ treatment group (3.3, 6.7, 10.0 g/kg per day) were lower than that in control group on the 3rd day of operation (P ＜ 0.01).CONCLUSION: Experimental brain injury induced by block blood supply may result in peripheral platelet abnormities. QCHJ has been shown to improve some of the abnormities.