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Occupational exposure to bisphenol A (BPA) in a plastic injection molding factory in Malaysia

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Kouidhi W., Thannimalay L., Soon C. S., Ali Mohd M.

International Journal of Occupational Medicine and Environmental Health

2017

vol. 30

issue 5

743-750

Objectives The purpose of this study has been to assess ambient bisphenol A (BPA) levels in workplaces and urine levels of workers and to establish a BPA database for different populations in Malaysia. Material and Methods Urine samples were collected from plastic factory workers and from control subjects after their shift. Air samples were collected using gas analyzers from 5 sampling positions in the injection molding unit work area and from ambient air. The level of BPA in airborne and urine samples was quantified by the gas chromatography mass spectrometry – selected ion monitoring (GCMS-SIM) analysis. Results Bisphenol A was detected in the median range of 8–28.3 ng/m³ and 2.4–3.59 ng/m³ for the 5 sampling points in the plastic molding factory and in the ambient air respectively. The median urinary BPA concentration was significantly higher in the workers (3.81 ng/ml) than in control subjects (0.73 ng/ml). The urinary BPA concentration was significantly associated with airborne BPA levels (ρ = 0.55, p < 0.01). Conclusions Our findings provide the first evidence that workers in a molding factory in Malaysia are occupationally exposed to BPA. Int J Occup Med Environ Health 2017;30(5):743–750

Environmental exposure to non-persistent endocrine disrupting chemicals and semen quality: An overview of the current epidemiological evidence

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Zamkowska D., Karwacka A., Jurewicz J., Radwan M.

International Journal of Occupational Medicine and Environmental Health

2018

vol. 31

issue 4

377-414

Some of the recent publications have reported a decline in semen quality in the last few decades. This phenomenon is associated with environmental factors, particularly with exposure to endocrine disrupting chemicals (EDCs). The aim of this publication is to critically review the literature on exposure to the following 6 ubiquitous environmental non-persistent EDCs: bisphenol A, triclosan, parabens, synthetic pyrethroids, organophosphate pesticides and phthalates, and on their influence on semen quality measured as sperm concentration, sperm volume, total sperm count, motility, total motile count, morphology, sperm motion, sperm DNA damage (comet extent, tail length, tail distributed moment, percent of DNA located in the tail (tail%), DNA fragmentation index, high DNA stainability, X:Y ratio and aneuploidy. Several electronic databases were systematically searched until 31 August 2016. Studies were qualified for the review if they: linked environmental exposure to non-persistent EDCs to semen quality outcomes, were published in English after 2006 (and, in the case of phthalates, if they were published after 2009) and were conducted in the case of humans. Out of the 970 references, 45 articles were included in the review. This review adds to the body of evidence that exposure to non-persistent EDCs may affect semen quality parameters and decrease semen quality. Int J Occup Med Environ Health 2018;31(4):377–414

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2 International Journal of Occupational Medicine and Environmental Health

1 Ali Mohd M.

1 Jurewicz J.

1 Karwacka A.

1 Kouidhi W.

1 Radwan M.

1 Soon C. S.

1 Thannimalay L.

1 Zamkowska D.

1 2018

1 2017

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Occupational exposure to bisphenol A (BPA) in a plastic injection molding factory in Malaysia

Environmental exposure to non-persistent endocrine disrupting chemicals and semen quality: An overview of the current epidemiological evidence