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Biomarkers of phthalates and inflammation: Findings from a subgroup of Women's Health Initiative participants

邻苯二甲酸盐 医学 混淆 体质指数 生物标志物 全国健康与营养检查调查 C反应蛋白 内科学 尿 炎症 生理学 妇科 人口 环境卫生 化学 生物化学 有机化学
作者
Avery Trim,Susan E. Hankinson,Simin Liu,Aladdin H. Shadyab,Jaymie R. Meliker,Wei Bao,Juhua Luo,Buyun Liu,JoAnn E. Manson,Lesley F. Tinker,Carol Bigelow,Katherine W. Reeves
出处
期刊:International Journal of Hygiene and Environmental Health [Elsevier BV]
卷期号:234: 113743-113743 被引量:14
标识
DOI:10.1016/j.ijheh.2021.113743
摘要

Recent experimental work has shown that phthalates may increase inflammation. Prior research has not examined the role of exposure to phthalates in relation to inflammatory status among postmenopausal women who are at higher risk of developing inflammation-related chronic disorders. We aimed to examine the associations of urinary phthalate biomarker concentrations with circulating levels of c-reactive protein [CRP] and interleukin-6 [IL-6] among 443 postmenopausal women selected into a breast cancer case-control study nested within the Women's Health Initiative (WHI). A total of 13 phthalate metabolites were measured in urine samples provided at WHI enrollment from 1993 to 1998. We also measured baseline levels of CRP and IL-6 in these women's serum or plasma samples. Multivariable linear models were used to investigate the role of each phthalate biomarker in relation to CRP and IL-6, adjusting for potential confounding factors and specifically evaluating the role of BMI. In adjusted models we observed positive associations of monocarboxynonyl phthalate (MCNP) with CRP (β = 0.092; 95% CI 0.026, 0.158) and IL-6 (β = 0.108; 95% CI 0.013, 0.204). These positive associations were attenuated and non-significant, however, after further adjustment for body mass index (BMI). In contrast, we observed inverse associations of monoethyl phthalate (MEP) (β = −0.019; 95% CI -0.036, −0.001) and monobenzyl phthalate (MBzP) (β = −0.034; 95% CI -0.058, −0.010) with CRP levels only after adjustment for BMI. Other phthalate biomarkers examined were not significantly associated with either CRP or IL-6 levels. Overall, these results do not suggest an important role for phthalates in promoting an inflammatory response. Future prospective studies are warranted to improve understanding of these associations, particularly in clarifying the role of BMI.
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