Please use this identifier to cite or link to this item:
https://doi.org/10.1530/ERC-13-0233
Title: | Serum estrogen receptor bioactivity and breast cancer risk among postmenopausal women | Authors: | Lim, V.W. Li, J. Gong, Y. Jin, A. Yuan, J.-M. Yong, E.L. Koh, W.-P. |
Keywords: | Breast cancer Estrogen Estrogen receptor Estrogen receptor bioassay |
Issue Date: | 2014 | Citation: | Lim, V.W., Li, J., Gong, Y., Jin, A., Yuan, J.-M., Yong, E.L., Koh, W.-P. (2014). Serum estrogen receptor bioactivity and breast cancer risk among postmenopausal women. Endocrine-Related Cancer 21 (2) : 263-273. ScholarBank@NUS Repository. https://doi.org/10.1530/ERC-13-0233 | Abstract: | The estrogen levels of Asian women are different from those of Western women, and this could affect estrogen receptor (ER) bioactivity and breast cancer risk. We conducted a case'control study in 169 postmenopausal breast cancer cases and 426 matched controls nested within a population-based prospective cohort study, the Singapore Chinese Health Study, to evaluate the serum levels of estrogens and their receptor (ERa and ERb)-mediated estrogenic activities in relation to breast cancer risk. Breast cancer cases had higher levels of estrogens and ER-mediated bioactivities in baseline serum than the controls. Compared with those in the lowest quartile, women in the highest quartile for estrone (E1) or ERa-mediated bioactivity had increased breast cancer risk. After additional adjustment for ERb bioactivity, free estradiol, and E1 levels, serum ERa-mediated bioactivity remained associated with increased breast cancer risk. Compared with those in the lowest quartile, women in the highest quartile for ERa-mediated bioactivity had an odds ratio of 2.39 (95% CIZ1.17'4.88; P for trendZ0.016). Conversely, the positive association between E1 and cancer risk became null after adjustment for ERa-mediated bioactivity, suggesting that the effect of E1 could be mediated through ERa. Factor(s) contributing to increased ERa-mediated estrogenic bioactivity in serum and its role as a predictor for breast cancer risk need to be validated in future studies. © 2014 Society for Endocrinology. | Source Title: | Endocrine-Related Cancer | URI: | http://scholarbank.nus.edu.sg/handle/10635/109045 | ISSN: | 14796821 | DOI: | 10.1530/ERC-13-0233 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
SCOPUSTM
Citations
12
checked on Feb 26, 2021
WEB OF SCIENCETM
Citations
9
checked on Feb 26, 2021
Page view(s)
81
checked on Feb 27, 2021
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.