在开始服用联合口服避孕药三个月后,接触系统活动增加
Jesper Strandberg1, Jette Nybo2, Inger Lise Gade3
1The Coagulation Unit, Department of Clinical Biochemistry, Aalborg University Hospital, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.
联合口服避孕药 (COC) 通过激活接触系统 (CAS) 来增加静脉血栓栓塞的风险. 这项研究表明,使用COC的女性的CAS能力和活性增加,支持其在VTE中的作用.
科学领域:
- 血液静止和血栓形成
- 药理学 药理学是指药理学的学科.
- 血管生物学 血管生物学
背景情况:
- 联合口服避孕药 (COC) 与静脉血栓塞栓症 (VTE) 的更高风险有关.
- 接触激活系统 (CAS) 在凝血中起作用,可能导致血栓形成.
- 之前的研究表明,COC使用者的CAS能力和活性增加,这表明VTE风险的潜在机制.
研究的目的:
- 在开始COC治疗之前和之后调查接触激活系统 (CAS) 参数的个体内变化.
- 评估COC使用如何影响个人内CAS的能力和活动.
主要方法:
- 研究了一组24名年龄在15-34岁的女性,她们开始接受COC治疗.
- 血液样本是在基线 (在COC之前) 和在使用COC3-4个月后收集的.
- 分析的参数包括XII因子 (FXII),prekallikrein (PK),H-kininogen (HK),C1-esterase抑制剂 (C1inh),切割的HK (cHK) 和内源性卡利克林潜力 (EKP).
主要成果:
- 观察到FXII和内源性卡利克林潜能 (EKP) 的水平显著增加.
- 发现C1酶抑制剂 (C1inh) 水平显著下降.
- 切割H-基因因子 (cHK) 水平的增加表明体内CAS活性升高.
结论:
- COC 治疗导致个体内CAS 能力和活性增加.
- 接触激活系统的这些变化可能会导致与COC使用相关的高血栓风险.
- 这些发现支持先前的研究,该研究将CAS激活与COC诱导的VTE风险联系起来.
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