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血友病A发病的分子机制 被引量:5

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摘要 凝血因子Ⅷ(FⅧ)内含子22倒位和错义突变分别是重型和轻/中型血友病A发病的主要机制。CpG岛是突变热点。约5%的重症血友病患者由内含子1倒位引起。大片段缺失突变多与重复序列有关。插入/缺失突变常常发生在单碱基连续地方。无义突变和剪接位点突变多导致重度表型。错义突变的效应和其所累及的位置有关,如影响蛋白分泌,降低F与血管性血友病因子(vWF)、磷脂或因子(FⅧ)结合力、影响凝血酶活化以及增加F不稳定性等。研究发病分子机制对于了解F分子结构和功能的关系、携带者判定、产前诊断以及患者的预后和治疗都有重要的意义。
作者 谢飞 王鸿利
出处 《国际输血及血液学杂志》 CAS 2006年第2期113-116,共4页 International Journal of Blood Transfusion and Hematology
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