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纯化的兔血清PON1在大鼠体内药动学初步研究

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摘要 通过探讨纯化的兔血清对氧磷酶-1在大鼠体内的药动学过程,为进一步研究其作为催化清除剂提供依据.按1200,2400和4800U/kg剂量,大鼠尾静脉注射纯化的兔血清对氧磷酶-1.每个剂量组66只大鼠,随机分成11组,每组6只,每只大鼠均于给药前采血,给药后10min,20min,30min,1h,2h,4h,8h,24h,30h,48h和72h分别处死一组大鼠,采集血液.大鼠给药后血清对氧磷酶-1活性值与给药前活性值的差值作为外源性酶活性值,对每一时间点活性值差值的均值进行药动学参数拟合.1200~4800U/kg剂量下,纯化的兔血清PON1在体内符合线性二室模型.T1/2α=2.3-2.35h,T1/2β=18.76-19.72h,V(c)=34.13-35.83mL/kg,CL=2.18~2.35mL·kg^-1·h^-1.3个剂量下雌雄大鼠体内外源性对氧磷酶-1活性无显著性差异(P〉0.05).因此,纯化的兔血清对氧磷酶-1在大鼠体内的消除半衰期较长,几乎全部分布于血液中,其在雌雄动物体内基本动力学行为相同.
出处 《中国科学(C辑)》 CSCD 北大核心 2009年第10期991-994,共4页 Science in China(Series C)
基金 国家自然科学基金(批准号:1063244-3-00)资助项目
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