JAMA Intern Med:长期应用钙离子拮抗剂或与乳腺癌风险增加相关

2013-08-07 晓静 编译 cmt

美国学者对绝经后女性评估了不同级别的降压药与乳腺浸润性导管癌和乳腺浸润性小叶癌的相关性。结果表明,长期应用钙离子通道拮抗剂(CCB)与乳腺癌危险相关,该研究是首个发现长期应用CCB与乳腺癌危险关系的研究。尚需进一步的研究确证这一发现并评估潜在发生的生物学机制。相关论文8月5日在线发表于《美国医学会杂志·内科学》(JAMA Intern Med)。 该项基于人群的病例对照研究纳

美国学者对绝经后女性评估了不同级别的降压药与乳腺浸润性导管癌和乳腺浸润性小叶癌的相关性。结果表明,长期应用钙离子通道拮抗剂(CCB)与乳腺癌危险相关,该研究是首个发现长期应用CCB与乳腺癌危险关系的研究。尚需进一步的研究确证这一发现并评估潜在发生的生物学机制。相关论文8月5日在线发表于《美国医学会杂志·内科学》(JAMA Intern Med)。

该项基于人群的病例对照研究纳入了年龄在55—74岁的女性受试者,浸润性导管癌、乳腺浸润性小叶癌病例数分别为880和1027例,856例无癌症受试者作为对照组。这些患者均在近期并持续应用抗高血压药物。评估其患浸润性导管癌和乳腺浸润性小叶癌的风险。

结果显示,当前应用CCB治疗达10年及以上的受试者与浸润性导管癌和乳腺浸润性小叶癌风险增加相关[比值比(OR)分别为2.4和2.6]。此种相关性与应用不同CCB类型有略微差异。而利尿剂、β受体阻滞剂和血管紧张素受体转换酶抑制剂(ACEI)均无此种相关性。

点评

波士顿大学斯隆流行病学中心Patricia F. Coogan博士表示,该研究表明绝经后女性长期应用CCB与乳腺癌风险增加2倍以上相关,是有说服力的。但并非是首次发现CCB与癌症风险增加的相关性研究。早在1996年,Pahor等人报告了一项研究发现,在老年应用CCB的人群中,所有癌症风险增加72%有关,具有显著统计学意义,这其中就包括增加乳腺癌风险65%。在随后的1997年,另一项老年队列人群研究也报告,曾用过CCB的人群乳腺癌相对危险度(RR)为2.6,有显著统计学意义。这两项研究均是小样本研究,之后的较大型病例对照队列研究均未能确证CCB与所有癌症或与乳腺癌的相关性。对于那些已经应用CCB达9.9年之久的患者是否该停止应用的问题,Coogan博士给予了否定的回答,因为该研究仅是观察性研究。同样的理由,该研究的主要研究者Christopher Li也不认为这能改变临床实践。

Christopher I. Li; Janet R. Daling; Mei-Tzu C.Tang; Kara L. Haugen; Peggy L. Porter; Kathleen E.Malone.Use of Antihypertensive Medications and Breast Cancer Risk Among Women Aged 55 to 74 Years.JAMA Intern Med. 2013;():-. doi:10.1001/jamainternmed.2013.9071.Published online August 5, 2013.

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