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使用口服避孕药的女性中，增高的哈格曼因子（因子Ⅻ）滴度对血浆肾素原冷冻激活的影响。

Influence of augmented Hageman factor (Factor XII) titers on the cryoactivation of plasma prorenin in women using oral contraceptive agents.

作者信息

Gordon E M, Douglas J, Ratnoff O D

出版信息

J Clin Invest. 1983 Nov;72(5):1833-8. doi: 10.1172/JCI111143.

DOI:10.1172/JCI111143

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC370472/

Abstract

Prolonged cold storage of plasma may induce the conversion of plasma prorenin (inactive renin) to renin. This phenomenon is exaggerated in oral contraceptive (OC) users; the titer of Hageman factor (HF, Factor XII) in OC users is higher than in nonusers. The present study relates these observations. The increment in plasma renin activity (PRA) during cold storage, as measured by generation of angiotensin I, correlated strongly with the initial plasma titer of HF. Increasing the HF titer of nonusers to that observed in OC users by addition of purified HF increased cold-induced PRA at least twofold, while reducing the plasma HF titer of OC users correspondingly decreased cold-induced PRA. Thus, in OC users, the enhanced conversion of plasma prorenin to renin during cold storage reflects the elevated plasma titer of HF.

摘要

血浆的长时间冷藏可能会促使血浆中无活性的肾素原转化为肾素。这种现象在口服避孕药（OC）使用者中更为明显；OC使用者的哈格曼因子（HF，凝血因子XII）滴度高于非使用者。本研究将这些观察结果联系起来。通过血管紧张素I的生成来测量，冷藏期间血浆肾素活性（PRA）的增加与HF的初始血浆滴度密切相关。通过添加纯化的HF将非使用者的HF滴度提高到OC使用者中观察到的水平，可使冷诱导的PRA至少增加两倍，而相应降低OC使用者的血浆HF滴度则会降低冷诱导的PRA。因此，在OC使用者中，冷藏期间血浆肾素原向肾素的转化增强反映了HF血浆滴度的升高。