白术—白芍药对治疗肠易激综合征的药效研究

被引:0
作者
孙萍萍
机构
[1] 浙江中医药大学
关键词
高效液相色谱法; 白术; 白芍; 药对; 肠道高敏感性; 药效;
D O I
暂无
年度学位
2015
学位类型
硕士
导师
摘要
目的:通过高效液相色谱法检测,确定白术-白芍药对最佳配伍比例。建立肠易激综合征大鼠模型,探讨白术-白芍药对治疗肠易激综合征大鼠的药效。方法:通过高效液相色谱法测定白术、白芍和不同比例白术-白芍药对的水提物,观察白术、白芍单独水煎和白术、白芍配伍成药对后有效成分的变化,确定最佳配伍比例。采用SD大鼠幼鼠母婴分离结合成年后直肠醋酸刺激法建立肠道高敏感性大鼠模型。实验分为6组,即正常对照组、模型对照组、匹维溴铵组(阳性组)、白术组、白芍组和白术-白芍药对组,每组10只。除正常和模型组给予同剂量生理盐水,各组分别给相应的药物。通过腹部回撤反应(AWR)测定、血清5-羟色胺(5-HT)含量,大鼠血浆中血管活性肠肽(VIP)、生长抑素(SS)含量测定以及肥大细胞(MC)计数评价不同药物干预后的肠道敏感性。结果:白术-白芍药对最佳配伍比例为2:3。大鼠直肠醋酸刺激法造成IBS大鼠模型肠道高敏感性,符合IBS特征,与正常对照组相比,其他5组AWR测定值明显升高,之间差异有统计学意义(P<0.01)。与正常对照组比,模型组肠道敏感性、5-HT、VIP、SS和肥大细胞计数均增加,经给予匹维溴铵、白术、白芍和2:3白术-白芍药对后,给药后各组大鼠5-HT、VIP、SS和肥大细胞计数均下降,其中,白术-白芍药对组作用优于白术组和白芍组,有显著性差异(P<0.01);与匹维溴铵组相比,差异无统计学意义(P>0.05)。结论:白术和白芍配伍使用,有利于芍药苷、白术内酯Ⅰ和白术内酯Ⅲ的溶出,且当白术-白芍药对比例为2:3时,药对水提物中芍药苷、白术内酯Ⅰ和白术内酯Ⅲ的溶出率最高,分别为单提液的104.2%、232.3%、232.0%。白术-白芍药对能降低IBS模型大鼠血清5-HT、血浆VIP、SS含量和结肠组织肥大细胞计数,降低肠道过敏,从而达到治疗目的。
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页数:52
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