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Associations between urinary concentrations of bisphenol A and sperm DNA fragmentation in young men.

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Date
2021-08
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Authors
Kiwitt Cárdenas, Jonathan ; Adoamnei, Evdochia ; Sarabia Cos, Laura ; Vela Soria, Fernando ; Fernández, Mariana F. ; Gonsálvez, Jaime ; Arense Gonzalo, Julián Jesús ; Mendiola Olivares, Jaime ; Torres Cantero, Alberto Manuel
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Publisher
Elsevier
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Ciencias Sociosanitarias
DOI
https://doi.org/10.1016/j.envres.2021.111289
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Abstract
Background: Bisphenol A (BPA) is one of the most common endocrine disruptor compounds in our environment, promoting a xenoestrogenic state. Numerous studies have shown a relationship between exposure to BPA and male infertility problems. Spermatic DNA integrity is a critical factor for the correct transmission of paternal genetic material to the embryo. However, only a very few studies have investigated the association between urinary BPA concentrations and human sperm DNA fragmentation (SDF). Method: Cross-sectional study conducted with 158 healthy university students (18–23 years), recruited between 2010 and 2011 in the Region of Murcia (Spain). The subjects provided urine and semen samples on a single day. Urinary BPA concentrations were measured by dispersive liquid–liquid microextraction and ultrahigh performance liquid chromatography with tandem mass spectrometry detection, and SDF analysed using the Sperm Chromatin Dispersion test. Statistical analyses were made using linear regression adjusting for potential covariates and confounding factors. Results: No association was found between urinary BPA concentrations and SDF index in the total group. However, in the subgroup of men with SDF index> 30%, significant positive associations across quartiles (ptrend= 0.02) and as a continuous BPA levels were observed (β = 0.055, 95%, CI: 0.002; 0.108). Conclusion: Our results show that, within the subgroup of men with relatively high SDF index, the higher the concentration of BPA the greater the SDF index. Nonetheless, more studies are required to confirm these results and draw conclusions in other male populations.
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Bisphenol A , Endocrine disruptor compounds , Male infertility , Male factor , Sperm chromatin dispersion test , Sperm DNA fragmentation
Citation
Environmental Research, 2021, Vol. 199: 111289
URI
http://hdl.handle.net/10201/143011
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