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维生素K缺乏难断定,异常凝血酶原建奇功
PIVKA(proteininducedbyvitaminKabsence)是指由于维生素K缺乏或使用维生素K拮抗剂诱导而产生的异常蛋白。PIVKA-Ⅱ是凝血酶原 (凝血Ⅱ因子)的异常蛋白体,又被称为异常凝血酶原。机体缺乏维生素K不仅会导致维生素K依赖凝血因子的活性降低,还代之合成无γ-羧基化的异常凝血酶原。
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