Vanderbilt University Medical Center, Division of Epidemiology, Nashville, TN 37203, United States.
Cancer Lett. 2013 Jan 28;328(2):345-52. doi: 10.1016/j.canlet.2012.10.010. Epub 2012 Oct 16.
Prostate enlargement is common with aging and obesity. We investigated the association between obesity and prostate cancer controlling for differential detection related to prostate enlargement. In an analysis of 500 men, we found body mass index, waist-hip ratio, and blood leptin levels were significantly associated with high-grade PC, but only among men without prostate enlargement. Leptin was also significantly associated with high-grade prostatic intraepithelial neoplasia (HGPIN) in the absence of prostate enlargement. Our results suggest obesity advances prostate carcinogenesis, and that detection biases at prostate biopsy may explain past inconsistencies in the association between obesity and PC.
前列腺增大是衰老和肥胖的常见现象。我们研究了肥胖与前列腺癌之间的关系,同时控制了与前列腺增大相关的差异检测。在对 500 名男性的分析中,我们发现体重指数、腰围臀围比和血液瘦素水平与高级别前列腺癌显著相关,但仅在没有前列腺增大的男性中。在没有前列腺增大的情况下,瘦素也与高级别前列腺上皮内瘤变(HGPIN)显著相关。我们的结果表明肥胖会促进前列腺癌的发生,而前列腺活检中的检测偏差可能解释了过去肥胖与前列腺癌之间关联的不一致性。