莫诺苷对局灶性脑缺血再灌注大鼠模型红细胞压积的影响

摘要

Objective To investigate the effect of morroniside on hematocrit percentage in a rat model of focal cerebral ischemia/reperfu-sion. Methods After the modified model induced with occlusion of middle cerebral artery (MCAO) with suture embolus, morroniside was administered intragastrically at the dose of 30 mg/kg (n=8), 90 mg/kg (n=8), and 270 mg/kg (n=8) once a day for 7 d. Acetyl salicylic acid (ASA) was used as positive drug (n=8). Hematocrit percentage was measured with automatic blood tester. Results Compared with the sham group, hematocrit percentage of the model group significantly increased (P<0.001), but increased less in those treated with morroniside and ASA (P<0.05). Conclusion Morroniside could inhibit the increase of hematocrit percentage in MCAO rats.%目的：研究莫诺苷对局灶性脑缺血再灌注(MCAO)大鼠红细胞压积(Hct)的影响。方法改良Longa法制备大鼠MCAO模型，造模后分别给予莫诺苷小剂量(30 mg/kg, n=8)、中剂量(90 mg/kg, n=8)、大剂量(270 mg/kg, n=8)和阿司匹林(n=8)连续灌胃7 d，每天1次。腹主动脉采血，全自动血样测试仪检测Hct。结果模型组大鼠Hct较假手术组显著升高(P<0.001)；莫诺苷小、中、大剂量组和阿司匹林组的Hct均比模型组降低(P<0.05)。结论莫诺苷能显著性抑制局灶性脑缺血再灌注引起的Hct升高。