【摘要】 目的探讨维生素K3降低肾结石模型大鼠尿草酸排泄的量效关系。方法选用80只雄性SD大鼠,体重200~250g,随机分为8组,分别为空白对照组、单纯VitK3组、单纯诱石组、诱石+4.0、3.0、2.0、0.8、0.4mg/dVitK3干预组,每组各10只。观察其24h尿草酸排泄量的变化。结果维生素K3对正常饮食大鼠无降低尿草酸作用(P>0.05),对诱石剂导致的24h尿草酸排泄量增加有明显的干预作用,干预剂量0.4mg/d时即已起效,24h尿草酸排泄量减少2.2%,随着干预剂量的增加,24h尿草酸排泄量增量逐渐减少,2mg/d时效果已相当明显,达到27.2%,其量效关系呈S型曲线,偏相关系数=-0.877(P<0.05)。结论维生素K3可有效降低诱石组大鼠24h尿草酸排泄量,并呈剂量依赖性。更多还原

【Abstract】 Objective To investigate the effect of vitamin K3 decreasing the urine oxalate excretion in rats. Methods A total of 80 male Sprague-Dawley rats (body weight, 200-250g) were randomly divided into 8 groups, ie, control group, only vitamin K3 group, stone forming group, stone forming plus 4.0、3.0、2.0、0.8、0.4mg/d Vit K3 group. Each group is 10 rats respectively. The change of urine oxalate was observed. Results Vitamin K3 can reduce the 24h urine oxalate excretion in stone-forming group rats, but there were no effects in control group rats(P<0.05). The 24h urine oxalate excretion was decreased with vitamin K3 increasing. The relationship is like a "S" curve. The coefficient of partial correlation is-0.877 (P<0.05). Conclusions Vitamin K3 can reduce the 24h urine oxalate excretion effectively in stone-forming group rats and both had a significant relationship.更多还原