Breast Cancer Res:激素生育治疗或影响乳腺癌的发生

2016-04-25 佚名 生物谷

不孕和激素生育治疗可能会影响乳房组织密度,从而诱发乳腺癌,这一结果发表在杂志Breast Cancer Research。 乳房由两种类型的组织组成:致密的纤维腺体和非密集的脂肪组织。 以前的研究表明,具有致密乳房的妇女患乳腺癌的几率比乳房不致密的女性高四到六倍。 全球12-28%夫妻患有不育症。根据美国疾病控制和预防中心的统计结果,15至44岁的女性中10.9%,即约670

不孕和激素生育治疗可能会影响乳房组织密度,从而诱发乳腺癌,这一结果发表在杂志Breast Cancer Research。

乳房由两种类型的组织组成:致密的纤维腺体和非密集的脂肪组织。

以前的研究表明,具有致密乳房的妇女患乳腺癌的几率比乳房不致密的女性高四到六倍。

全球12-28%夫妻患有不育症。根据美国疾病控制和预防中心的统计结果,15至44岁的女性中10.9%,即约670万女性存在不孕不育问题。

这些女性在接受治疗的过程中可能会受到激素治疗,如有控制的卵巢刺激,以激发雌激素和孕激素的释放,这是体外受精(IVF)过程的一部分。

虽然卵巢刺激和乳腺癌之间还未发现有明确的关联,研究人员认为,雌激素和孕激素水平的升高可能会增加患乳腺癌的风险。

以前研究发现不育与乳房密集之间的关联性

瑞典卡罗林斯卡医学院的研究员在Frida Lundberg领导下的研究中,调查了43313位年龄为40-69岁的妇女,她们有从2010 - 2013年的乳房X线照片。

此次筛选作为患乳腺癌的风险预测卡罗林斯卡乳房X光检查(KARMA)项目的一部分。

参与调查的志愿者会通过填写调查问卷的形式给出她们详细情况,例如年龄,体重,身高,饮酒,吸烟状况,不孕和乳腺癌的家族史。

研究人员比较了生育妇女和不育妇女的乳腺密度。并比较了接受过激素治疗的不孕妇女和从未接受过此类治疗的不孕妇女的乳房密度。

所有的志愿者中,8963名妇女存在生育问题。其中,1576位经历了卵巢刺激治疗,1429位接受过非卵巢刺激的激素治疗,还有5948位没有进行生育治疗。

结果表明,不孕的妇女比可生育妇女有更密集的乳房,她们的乳房含有更密的纤维腺体。而且接受过卵巢刺激的不孕妇女比未接受激素治疗的妇女乳房更加密集。

研究人员不知道是卵巢刺激还是潜在的生育能力导致了乳房密度的增加。

这是第一个发现不孕和激素刺激会影响乳腺密度的人群研究。

但作者认为乳房密度是评估激素生育治疗对乳腺癌风险影响的一个有用指标,尤其是对50岁之前患乳腺癌的女性,因为这并不是乳腺癌高发的年龄段。

Lundberg认为结果可能表明接受激素治疗的不孕妇女患乳腺癌的风险较高。

当然此研究也有一些问题,如研究数据全部都是志愿者自己了解的信息,并没有提供具体诊断结果来清楚地判断哪些妇女有不孕不育症,哪些没有。声称不孕不育的妇女也有可能只是因为丈夫有不育症。

未解决的问题: 

由于缺乏妇女接受治疗周期的时间和数量的相关信息,意味着作者无法判断高乳腺密度是否是由最近的治疗导致的。
然而,有研究显示卵巢刺激治疗和中老年妇女高乳房密度之间有更紧密的相关性,这表明激素治疗对乳房组织会产生长期的影响。
横向来看,目前的研究并不能证明激素生育治疗、不孕症和乳房密度之间的因果关系。

然而,鉴于目前发现的不育,激素治疗和乳腺密度之间的这种关联性,研究者建议对进行激素生育治疗的女性持续进行监测。

原始出处:

Lundberg FE, Johansson AL, Rodriguez-Wallberg K, Brand JS, Czene K, Hall P, Iliadou AN. ssociation of infertility and fertility treatment with mammographic density in a large screening-based cohort of women: a cross-sectional study. Breast Cancer Res. 2016 Apr 13;18(1):36. doi: 10.1186/s13058-016-0693-5.

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    2016-10-03 1e10c84am36(暂无匿称)

    深度好文,值得关注

    0

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    2016-05-05 whwhah

    真的长知识啦

    0

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    2016-05-05 whwhah

    真的长知识啦

    0

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    2016-05-05 whwhah

    真的长知识啦

    0

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    2016-04-27 zhaojie88

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