The effects of bisphenol A (BPA) exposure on fat mass and serum leptin concentrations have no impact on bone mineral densities in non-obese premenopausal women
Objectives: Bisphenol A (BPA) exposure may promote obesity, but its effect on bone mineral density (BMD) has not been reported in humans.We aimed to examine the relationships between BPA exposure, body composition, serum estradiol, leptin, osteocalcin levels and BMDs in healthy premenopausal women.Design and methods: In this cross-sectional study, a total of 246 healthy premenopausal women aged 20 years and older with regular menstrual cycles were investigated.Body mass index (BMI), fat mass.fat-free mass and BMDs were measured by DXA.Serum estradiot, leptin, osteocalcin, urinary BPA and NTx levels were also tested.Results: Urinary BPA levels were positively associated with fat mass (r=0.193.p=0.006) and leptin (r=0.236, p=0.001) but not with fat-free mass after adjusting for age and BML BPA was not assoclated with serum estradioi levels, BMDs, or bone resorption marker NTx and bone formation parameter osreocalcin, either.A mltivariate stepwise regression analysis confirmed that serum leptin levels were pos itively influenced by fat mass (β=0.746, p<0.001) and BPA (β=0.127, p =0.01) but negatively correlated with fat-free mass (β=-0.196, p<0.001).However.the changes of BMDs at the lumbar spine (β=0.298,p< 0.001) and femoral neck (β =0.305, p< 0.001) were primarily explained by fat-free mass, and were irrel evant of the fat mass, leptin or BPA exposure.Conclusions: Although BPA exposure is related with increased amount of fat mass and elevated serum leptin levels, it has neutral effect on BMDs in premenopausal women, possibly due to the exclusive role of fat-free mass, which is unrelated to BPA in determining BMDs.
BPA BMD Fat mass Fat-free mass Leptin
Hong-van Zhao Wei-qing Wang Xiao-yin Li Man-yin Xu Jia-lun Chen Guang Ning Jian-min Liu Yu-fang Bi Lin-ying Ma Lin Zhao Tian-ge Wang Lian-zhen Zhang BeiTao Li-hao Sun Yong-ju Zhao
Department of Endocrine and Metabolic Diseases, Rui-jin Hospital Shanghai Jiao-Tong University School of Medicine,Shanghai Institute of Endocrine and Metabolic diseases,Shanghai Clinical Center for Endocrine and Metabolic Diseases Endocrine and Metabolic E-institutes of Shanghai Universities (EISU) and Key Laboratory for Endocrinology and Metabolism of Chinese Health Ministry,197 Rui-jin Er Road,Shanghai 200025, China
国内会议
南昌
英文
940-944
2013-06-13（万方平台首次上网日期，不代表论文的发表时间）