非裔美籍女人乳腺癌发病率高的原因-凯发k8官网

非裔美籍女人乳腺癌发病率高的原因
文章来源:未知 文章作者:enread 发布时间:2011-08-17 02:36 字体: [ ] 
(单词翻译:双击或拖选)

1 from the boston university's slone epidemiology center have reported findings that may shed light on why african american women have a disproportionately higher risk of developing more aggressive and difficult-to-treat breast cancers, specifically estrogen and progesterone receptor negative (er-/pr-) cancers. the study, which appears online in cancer epidemiology, biomarkers & prevention, found that high 2(平价,同等) (giving birth to two or more children) was associated with an increased risk of er-/pr- cancer, but only among women who had not breastfed.

the findings were based on the 3 black women's health study, which has followed 59,000 african american women by 4(两年一次的) questionnaire since 1995.

in 14 years of follow-up, 318 women developed breast cancers negative for estrogen and progesterone receptors (er-/pr-), while 457 developed breast cancers with estrogen and progesterone(黄体酮) receptors (er /pr ). giving birth to two or more children was associated with a 50 percent increase in the incidence of er-/pr- breast cancer, but the association was not present among women who had breastfed.

according to the researchers, the results for er /pr breast cancer, which is more common among white women, were strikingly different. high parity was associated with a decreased risk, and breast feeding had no influence on that association.

"the higher incidence of er-/pr- breast cancer in african american women may be explained in part by their higher parity and lower prevalence of breastfeeding relative to white women," explained lead author julie palmer, scd, mph, a senior epidemiologist at the slone epidemiology center and a professor of epidemiology(流行病学) at boston university school of public health.

"our results, taken together with recent results from studies of triple negative and basal-like breast cancer, suggest that breastfeeding can reduce risk of developing the aggressive, difficult-to-treat breast cancers that disproportionately affect african american women," she said.

this study was supported by a grant from the national cancer institute of the national institutes of health.



点击收听单词发音收听单词发音  

1 e970f9140785518a87fc81641b7c89f7     
n.调查者,审查者( investigator的名词复数 )
参考例句:
  • this memo could be the smoking gun that investigators have been looking for. 这份备忘录可能是调查人员一直在寻找的证据。
  • the team consisted of six investigators and two secretaries. 这个团队由六个调查人员和两个秘书组成。 来自《简明英汉词典》
2 34mzs     
n.平价,等价,比价,对等
参考例句:
  • the two currencies have now reached parity.这两种货币现已达到同等价值。
  • women have yet to achieve wage or occupational parity in many fields.女性在很多领域还没能争取到薪金、职位方面的平等。
3 6rvzt     
adj.进行中的,前进的
参考例句:
  • the problem is ongoing.这个问题尚未解决。
  • the issues raised in the report relate directly to age concern's ongoing work in this area.报告中提出的问题与“关心老人”组织在这方面正在做的工作有直接的关系。
4 7oryt     
adj.两年一次的
参考例句:
  • the workers were strongly against the biennial election.工人们强烈反对两年一次的选举。
  • his is a biennial,and one of the most useful pasture plants we have.这是两年生植物,也是我们最有用的牧草之一。
上一篇:吸烟导致膀胱癌几率远超预期 下一篇:
tag标签: american cancer
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片
最新评论
网站地图