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循环酶法测定血浆同型半胱氨酸的方法学评价 被引量:2

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摘要 目的:评价测定血浆同型半胱氨酸(HCY)的循环酶方法。方法:血浆氧化型同型半胱氨酸经三-乙-羧乙基膦(TCEP)还原成游离型HCY,基于HCY甲基转移酶(HMTase),S-腺苷同型半胱氨酸水解酶(SAHase)构成的循环酶体系以及脱氢酶-辅酶体系的原理,用自动生化分析仪测定血浆HCY。结果:测定线性范围达1.5μmol/L~50.0μmol/L;批内CV分别为2.1%、1.7%;日间CV分别为3.7%、4.1%,总CV分别为4.9%、5.2%;回收率96.8%~101.3%;本法和高效液相色谱法比较:R^2=0.9737,Y=0.972X+1.595。t=2.01,P>0.05,差异无显著性;血氨<50.0μmol/L,三酰甘油<11.0 mmol/L,抗坏血酸<10.0 mmol/L,胆红素<500.0μmol/L,血红蛋白<2.0 g/L,谷胱甘肽<0.05 mmol/L时,对结果无明显干扰。结论:本方法具有简便、灵敏等特点,适合血浆HCY的常规和自动化分析。
机构地区 铜陵市人民医院
出处 《实用医技杂志》 2007年第33期4545-4547,共3页 Journal of Practical Medical Techniques
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