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12 results on '"Provencher, Gilles"'

9. Maternal and early life exposure to phthalates: The Plastics and Personal-care Products use in Pregnancy (P4) study

Author

Arbuckle, Tye E., primary, Fisher, Mandy, additional, MacPherson, Susan, additional, Lang, Carly, additional, Provencher, Gilles, additional, LeBlanc, Alain, additional, Hauser, Russ, additional, Feeley, Mark, additional, Ayotte, Pierre, additional, Neisa, Angelica, additional, Ramsay, Tim, additional, and Tawagi, George, additional

Published
2016
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10. Exposure to Free and Conjugated Forms of Bisphenol A and Triclosan among Pregnant Women in the MIREC Cohort

Author

Arbuckle, Tye E., primary, Marro, Leonora, additional, Davis, Karelyn, additional, Fisher, Mandy, additional, Ayotte, Pierre, additional, Bélanger, Patrick, additional, Dumas, Pierre, additional, LeBlanc, Alain, additional, Bérubé, René, additional, Gaudreau, Éric, additional, Provencher, Gilles, additional, Faustman, Elaine M., additional, Vigoren, Eric, additional, Ettinger, Adrienne S., additional, Dellarco, Michael, additional, MacPherson, Susan, additional, and Fraser, William D., additional

Published
2015
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12. Research. Exposure to Free and Conjugated Forms of Bisphenol A and Triclosan among Pregnant Women in the MIREC Cohort.

Author

Arbuckle, Tye E., Marro, Leonora, Davis, Karelyn, Fisher, Mandy, Ayotte, Pierre, Bélanger, Patrick, Dumas, Pierre, LeBlanc, Alain, Bérubé, René, Gaudreau, Éric, Provencher, Gilles, Faustman, Elaine M., Vigoren, Eric, Ettinger, Adrienne S., Dellarco, Michael, MacPherson, Susan, and Fraser, William D.

Subjects
PHENOL analysis, CONFIDENCE intervals, MATERNAL age, PHENOLS, RESEARCH funding, TRICLOSAN, DATA analysis software, DESCRIPTIVE statistics, ODDS ratio, PREGNANCY
Abstract

Background: Bisphenol A (BPA) and triclosan (TCS) are two nonpersistent chemicals that have been frequently measured in spot urine samples from the general population but less so in pregnant women; however, data are limited on the free (bioactive) and conjugated forms of these phenols. Objectives: The Maternal-Infant Research on Environmental Chemicals (MIREC) Study addressed these data gaps by utilizing stored maternal urine samples from a large multicenter cohort study of Canadian pregnant women. Methods: Concentrations of free and conjugated forms of BPA and TCS were measured in about 1,890 first-trimester urine samples by ultra performance liquid chromatograpy-tandem mass spectrometry using isotope dilution. Results: The glucuronides of BPA and TCS were the predominant forms of these chemicals measured (detected in 95% and 99% of samples, respectively), whereas the free forms were detected in 43% and 80% of samples, respectively. The geometric mean urinary concentrations for glucuronides of BPA and TCS were 0.80 μg/L (95% CI: 0.75, 0.85) and 12.30 μg/L (95% CI: 11.08, 13.65), respectively. Significant predictors of BPA included maternal age < 25 vs. ≥ 35 years, current smoking, low vs. high household income, and low vs. high education. For TCS, urinary concentrations were significantly higher in women ≥ 25 years of age, never vs. current smokers, and women with high household income and high education. Conclusions: The results from this study represent the largest national-level data on urinary concentrations of free and conjugated forms of BPA and TCS in pregnant women and suggest that maternal characteristics predicting elevated urinary concentrations of these phenols largely act in opposite directions. Citation: Arbuckle TE, Marro L, Davis K, Fisher M, Ayotte P, Bélanger P, Dumas P, LeBlanc A, Bérubé R, Gaudreau É, Provencher G, Faustman EM, Vigoren E, Ettinger AS, Dellarco M, MacPherson S, Fraser WD. 2015. Exposure to free and conjugated forms of bisphenol A and triclosan among pregnant women in the MIREC cohort. Environ Health Perspect 123:277-284; http://dx.doi.org/10.1289/ehp.1408187 [ABSTRACT FROM AUTHOR]

Published
2015
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