High urinary bisphenol A concentrations in workers and possible laboratory abnormalities

Occupational and Environmental Medicine
Feng WangBingling Wang

Abstract

Bisphenol A (BPA) is widely used in epoxy resins in China. There are few reports on the adverse health effects of occupational exposure to BPA. This study examined associations between urinary BPA concentrations in workers and laboratory parameters for health status. Spot urine checks at the end shift on Friday were used for cross-sectional analysis of BPA concentrations, and blood or urinary markers of liver function, glucose homeostasis, thyroid function and cardiovascular diseases were measured. The 28 participants were workers in two semiautomatic epoxy resin factories. The average urinary BPA concentration was 55.73±5.48 ng/ml (geometric mean ± geometric SD) (range 5.56-1934.85 ng/ml). After adjusting for urine creatinine (Cr), it was 31.96±4.42 μg/g Cr (geometric mean ± geometric SD) (range 4.61-1253.69 μg/g Cr). BPA feeding operators showed the highest concentrations, over 10 times those of the crushing and packing and office workers. Higher BPA concentrations were associated with clinically abnormal concentrations of FT3, FT4, TT3, TT4, thyroid-stimulating hormone, glutamic-oxaloacetic transaminase and γ-glutamyl transferase. Workers with higher BPA concentrations showed higher FT3 concentrations (linear trend: p<0.001)...Continue Reading

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