Detection of Factor V Leiden from a Drop of Blood by PCR-SSCP

Detection of Factor V Leiden from a Drop of Blood by PCR-SSCP
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通过 PCR-SSCP 检测一滴血中的 V 因子 Leiden

DOI:
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发表时间:
1996
影响因子:
6.7
通讯作者:
V. Vicente
V. Vicente
中科院分区:
医学2区
文献类型:
--
作者:
J. Corral;Juan A. Iniesta;R. González;V. Vicente

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摘要 最近,已鉴定出凝血因子 V 基因的点突变(位置 1691 处的 G 变为 A),该突变使突变的因子 V(称为因子 V Leiden)对活化蛋白 C 具有抵抗力。这种缺陷是静脉血栓形成中公认的遗传危险因素。由于正常人群中 V 因子 Leiden 的患病率很高(2-7%),因此有必要采用一种快速而简单的方法来筛查高危人群中的遗传异常。我们开发了一种简单、可重复、快速且廉价的程序,使用 PCR 和 SSCP,可以识别导致因子 V Leiden 的突变。该方法的特异性已在 319 个样本中进行了测试:304 个正常样本、14 个杂合样本和 1 个因子 V Leiden 纯合样本。该测定允许使用冷冻全血在 3 小时内鉴定非同位素 V 因子 Leiden。所有这些特征使得该测试足以在大量样本中常规筛查该突变。
Summary Recently, a point mutation in the coagulation Factor V gene (G to A in position 1691) has been identified which makes the mutant Factor V (called Factor V Leiden) resistant to activated protein C. This defect is a well established genetic risk factor in venous thrombosis. Because of the high prevalence of Factor V Leiden in normal population (2-7%), it would be reasonable to perform a rapid and simple method for screening the genetic abnormality in population at risk. We have developed a simple, reproducible, rapid and cheap procedure that, using PCR and SSCP, allows the identification of the mutation responsible for Factor V Leiden. Specificity of this method has been tested in 319 samples: 304 normal, 14 heterozygous and 1 homozygous for Factor V Leiden. This assay allows non-isotopic Factor V Leiden identification by using frozen whole blood in 3 h. All these features make this test adequate for routine screening of this mutation in a large number of samples.