Int J Cancer:补充异黄酮与绝经后乳腺癌风险降低相关

2012-08-17 君亭 医学论坛网

  《国际癌症杂志》(International Journal of Cancer)近期发表的一项研究表明,补充异黄酮与绝经后乳腺癌风险降低相关。考虑到该研究中异黄酮补充剂用量较小和研究本身潜在的局限性,这一结果尚需进一步研究确定。   植物性补充剂应用广泛,包含诸多成分,异黄酮类是其中之一。饮食中异黄酮类已经被证明与乳腺癌风险降低相关。但是,尚无研究综合评估异黄

  《国际癌症杂志》(International Journal of Cancer)近期发表的一项研究表明,补充异黄酮与绝经后乳腺癌风险降低相关。考虑到该研究中异黄酮补充剂用量较小和研究本身潜在的局限性,这一结果尚需进一步研究确定。

  植物性补充剂应用广泛,包含诸多成分,异黄酮类是其中之一。饮食中异黄酮类已经被证明与乳腺癌风险降低相关。但是,尚无研究综合评估异黄酮补充剂与乳腺癌风险的关联。

  该研究利用加拿大安大略癌症登记处2002~2003年的病例(n=3103)和通过随机数字拨号法确定的对照者(n=3471)的资料,评估了使用28种异黄酮补充剂与乳腺癌风险的相关性。

  多变量回归分析被用于评估校正年龄后比值比(AOR)和95%可信区间(CI)。

  结果显示,几种单一补充剂与乳腺癌风险降低相关[例如:天然激素替代治疗(HRT),AOR=0.39,95%CI=0.22~0.69,n使用者=58]。当使用≥3种(AOR=0.68,95%CI=0.54~0.86,n使用者=332,Ptrend=0.008)或任意一种使用>5年(AOR=0.75,95%CI=0.60~0.94,n使用者=325,Ptrend=0.01)时,使用任意异黄酮补充剂均与乳腺癌风险降低相关。

  单一和复合补充剂对乳腺癌风险的降低作用局限于绝经后乳腺癌,在补充≥3种补充剂(AOR=0.55,95%CI=0.38~0.81,n使用者=118,Ptrend=0.04)或任意一种补充剂使用>5年(AOR=0.47,95%CI=0.27~0.81,n使用者=60,Ptrend=0.03)的大剂量复合补充者中,上述降低作用最强。上述相关性不受雌激素-孕激素肿瘤受体状态的影响。

  相关链接:Boucher BA, Cotterchio M, Anderson LN, Kreiger N, Kirsh VA, Thompson LU.Use of isoflavone supplements is associated with reduced postmenopausal breast cancer risk. Int J Cancer. 2012 Aug 13. doi: 10.1002/ijc.27769.
 



    

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    2012-12-29 fengyi821
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    2013-06-03 sjq027
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    2012-08-19 zxxiang

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