Exposure to bisphenol A and breast cancer risk in northern Mexican women
Menée au Mexique auprès de 394 patientes atteintes d'un cancer du sein et de 404 témoins, cette étude analyse l'association entre la concentration urinaire de bisphénol A libre et le risque de développer la maladie
Objective: To evaluate the association between BC and urinary concentrations of free-bisphenol A (BPA-F), the biological form of BPA, among women residing in Northern Mexico. Methods: The population under study comprised 394 histologically confirmed BC cases and 404 age-matched controls. Women were interviewed face to face about their sociodemographic and reproductive characteristics. BPA-F was determined by high-pressure liquid chromatography equipped with a fluorescence detector (HPLC/FLD). Logistic regression models were used to estimate the adjusted BC risk in relation to BPA-F. Results: BPA-F geometric mean was significantly higher among cases compared to controls (3.16
μg/L in cases and 2.47 μg/L in controls). A significant adjusted BC odds ratio of 2.31 (95% CI: 1.43
–3.74) was estimated for the highest category of BPA-F compared to the lowest category. Conclusion: BPA-F may be an environmental cofactor of BC. Since this is the first report on BPA-F association with BC, our results need to be replicated.
International Archives of Occupational and Environmental Health