Breast Cancer Research:PM2.5增加女性患乳腺癌的风险

2017-04-07 浮生若梦 来宝网

根据开放获取期刊《乳腺癌研究》上发表的最新研究显示,在美国,一项近28万妇女参与的调查发现,生活在空气污染细颗粒物水平较高的地区可能增加女性的乳房密度-这是乳腺癌确定的风险因素之一。

根据开放获取期刊《乳腺癌研究》上发表的最新研究显示,在美国,一项近28万妇女参与的调查发现,生活在空气污染细颗粒物水平较高的地区可能增加女性的乳房密度-这是乳腺癌确定的风险因素之一。

这项研究的目的是调查空气污染与乳腺密度之间的最大相关性,它发现对于细颗粒物(PM2.5)浓度每增加一单位,女性乳房密度增加的几率就提升4%。乳房密度高的女性中近20%的人曾经暴露于PM2.5污染的空气环境中。相反的,乳房密度低、乳房脂肪组织含量较多的女性中12%的人几乎未曾暴露在PM2.5污染空气环境里。

乳房密度通过乳房X射线摄影术检测,它反映了乳房中不同组织类型的相对数量。拥有大量脂肪组织的乳房更易于借助乳房X射线摄影术观察,异常也易于发现。致密的乳房含有更高比例的纤维组织,它干扰了乳房X射线摄影术的判断,使异常如乳腺肿瘤难于识别。

来自佛罗里达大学,第一作者Lusine Yaghjyan博士说,“我们的研究结果表明,前期报告中乳房密度的地域差异能够由城市和乡村不同的空气污染模式来解释。乳房密度是与乳腺癌联系最紧密的风险因子,因此,未来研究有必要确定观察到的联系是否为因果关系,如果证实则能对风险预防有重要意义。

在这项近28万妇女参与的调查研究中,研究人员也关注了臭氧暴露与乳房密度之间的关系。他们发现,臭氧浓度每增加一单位,乳房致密的可能性就降低3%。

Yaghjyan博士解释说:“我们发现了细颗粒物污染暴露与乳房密度之间存在正相关关系,但臭氧暴露与乳房密度之间存在负相关。这是一个非常有趣的结果,值得进一步研究,找出任何可能引起臭氧暴露降低女性乳房密度可能性的生物机制。

PM2.5空气污染的化学成分中含有致内分泌紊乱的污染物。据研究人员介绍,由于不可控因素,现有的观察研究还不能建立空气污染和乳房密度的因果关系,但这些污染物可能会通过干扰乳腺细胞生长和增加纤维组织的相对数量而潜在地影响乳房密度。

参与这项研究的女性来自于乳腺癌监测联盟,一个在美国以人口为基础的,接受乳腺X线钼靶筛查的女性群体。从2001年至2009年这些女性进行乳腺X线钼靶筛查数据包括乳房密度均囊括其中。使用BI-RADS系统测量乳房密度,该方法由美国放射学院开发用于标准化乳房密度的测量。相应的女性生活过或做乳腺X线筛查期间居住地区的空气污染数据从美国环境保护局获得。

原始出处:

Lusine Yaghjyan, et al.  Association between air pollution and mammographic breast density in the Breast Cancer Surveilance Consortium.  Breast Cancer Research. Published: 6 April 2017

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    2017-04-10 ylzr123

    认真学习,把间接经验应用到临床实践中去,然后再总结出新思路。

    0

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    2017-04-09 zhaojie88
  5. [GetPortalCommentsPageByObjectIdResponse(id=1710994, encodeId=67ac1e109941a, content=<a href='/topic/show?id=9a1c289680' target=_blank style='color:#2F92EE;'>#AST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2896, encryptionId=9a1c289680, topicName=AST)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8b9831894722, createdName=ms24272190615788285182, createdTime=Thu Jan 18 15:59:00 CST 2018, time=2018-01-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186411, encodeId=04c6186411ea, content=认真学习,把间接经验应用到临床实践中去,然后再总结出新思路。, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Mon Apr 10 11:01:28 CST 2017, time=2017-04-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1264972, encodeId=577b12649e2e9, content=<a href='/topic/show?id=9574144034a' target=_blank style='color:#2F92EE;'>#PM2.5#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14403, encryptionId=9574144034a, topicName=PM2.5)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=87f580, createdName=yilong5287542, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351088, encodeId=77981351088c3, content=<a href='/topic/show?id=12e43e1263' target=_blank style='color:#2F92EE;'>#Breast#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3712, encryptionId=12e43e1263, topicName=Breast)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557759, encodeId=4b41155e75990, content=<a href='/topic/show?id=d2601533982' target=_blank style='color:#2F92EE;'>#Research#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15339, encryptionId=d2601533982, topicName=Research)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96ab14929432, createdName=yangshch, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186011, encodeId=966c186011d4, content=学习了,谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaEJicFGXtYqfjGiaibNdjOiaRgkexnXiciaDeXaLiaKicovcicDugdYwRPSnQj3FlfXBwVLB5ANB9PGFyB0kraQ/0, createdBy=35b01663265, createdName=1ddf3e1dm99(暂无匿称), createdTime=Sat Apr 08 16:41:06 CST 2017, time=2017-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=185809, encodeId=a39218580966, content=PM2.5增加女性患乳腺癌的风险, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fd301464769, createdName=Albert Wu, createdTime=Fri Apr 07 17:09:19 CST 2017, time=2017-04-07, status=1, ipAttribution=)]
    2017-04-09 yangshch
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    2017-04-08 1ddf3e1dm99(暂无匿称)

    学习了,谢谢!

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1710994, encodeId=67ac1e109941a, content=<a href='/topic/show?id=9a1c289680' target=_blank style='color:#2F92EE;'>#AST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2896, encryptionId=9a1c289680, topicName=AST)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8b9831894722, createdName=ms24272190615788285182, createdTime=Thu Jan 18 15:59:00 CST 2018, time=2018-01-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186411, encodeId=04c6186411ea, content=认真学习,把间接经验应用到临床实践中去,然后再总结出新思路。, beContent=null, objectType=article, channel=null, level=null, likeNumber=82, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Mon Apr 10 11:01:28 CST 2017, time=2017-04-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1264972, encodeId=577b12649e2e9, content=<a href='/topic/show?id=9574144034a' target=_blank style='color:#2F92EE;'>#PM2.5#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14403, encryptionId=9574144034a, topicName=PM2.5)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=87f580, createdName=yilong5287542, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1351088, encodeId=77981351088c3, content=<a href='/topic/show?id=12e43e1263' target=_blank style='color:#2F92EE;'>#Breast#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3712, encryptionId=12e43e1263, topicName=Breast)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4c37265, createdName=zhaojie88, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1557759, encodeId=4b41155e75990, content=<a href='/topic/show?id=d2601533982' target=_blank style='color:#2F92EE;'>#Research#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15339, encryptionId=d2601533982, topicName=Research)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96ab14929432, createdName=yangshch, createdTime=Sun Apr 09 03:59:00 CST 2017, time=2017-04-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=186011, encodeId=966c186011d4, content=学习了,谢谢!, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/PiajxSqBRaEJicFGXtYqfjGiaibNdjOiaRgkexnXiciaDeXaLiaKicovcicDugdYwRPSnQj3FlfXBwVLB5ANB9PGFyB0kraQ/0, createdBy=35b01663265, createdName=1ddf3e1dm99(暂无匿称), createdTime=Sat Apr 08 16:41:06 CST 2017, time=2017-04-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=185809, encodeId=a39218580966, content=PM2.5增加女性患乳腺癌的风险, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=fd301464769, createdName=Albert Wu, createdTime=Fri Apr 07 17:09:19 CST 2017, time=2017-04-07, status=1, ipAttribution=)]
    2017-04-07 Albert Wu

    PM2.5增加女性患乳腺癌的风险

    0

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