Toxicological Research

Korean Society of Toxicology & Korea Environmental Mutagen Society (한국독성학회)
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Impacts of PAH accumulation on reproductive hormones, indices of oxidative stress and BPDE-albumin adduct in women with recurrent pregnancy loss

  • Amany El-Sikaily (National Institute of Oceanography and Fisheries (NIOF)) ;
  • Mohamed Helal (National Institute of Oceanography and Fisheries (NIOF)) ;
  • Augusta Chinyere Nsonwu-Anyanwu (Department of Clinical Chemistry and Immunology, University of Calabar) ;
  • Hossam Azab (Obstetrics and Gynecology Department, Faculty of Medicine, Alexandria University) ;
  • Neveen Abd ElMoneim (Applied Medical Chemistry, Medical Research Institute, Alexandria University) ;
  • Eman Othman Salem Farahat (Applied Medical Chemistry, Medical Research Institute, Alexandria University) ;
  • Aziza Saad (Applied Medical Chemistry, Medical Research Institute, Alexandria University)
  • Received : 2022.12.09
  • Accepted : 2023.04.05
  • Published : 2023.07.15
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Abstract

Chronic exposure to Poly aromatic hydrocarbons (PAHs) may be associated with adverse pregnancy outcomes. Disruption of hormonal and redox balance by toxic PAH metabolites may interfere with successful pregnancy leading to miscarriage. The association of exposure to PAH contaminated mussel via the dietary route with perturbations in reproductive hormones, biomarkers of oxidative stress, and PAH metabolites were assessed in women with recurrent pregnancy loss (RPL). Furthermore, an analysis of the concentration of PAHs in environmentally relevant bivalve animals was performed to preliminary get insights into the levels of these pollutants in the environment. Seventy-six women (20-35 years) were categorized into 18 fertile women without RPL (control), and Groups I, II, and III comprising 24, 18, and 16 women with RPL (2, 3, and>3 abortions respectively) were studied. Whole blood samples were collected for the estimation of malondialdehyde (MDA), catalase, reduced glutathione (GSH), glutathione-S-transferase (GST), progesterone (P4), follicle-stimulating hormone (FSH), benzo[a]pyren-7,8-dihydrodiol-9,10-epoxide-albumin adduct (BPDE-albumin) and urine for α-naphthol and β-naphthol. Two species of mussel Donax trunculus and Andar aduloii samples were collected for the estimation of 16 priority PAHs. The concentration of PAHs exceeding the maximum limits was observed in the two species of mussels studied. Higher levels of BPDE-albumin, MDA, GST, α and β-naphthol and lower GSH, catalase, FSH, and P4 were observed in women with RPL (Groups I-III) compared to controls (p= <0.001). Negative associations were observed between BPDE-albumin and catalase (r=- 0.276, p=0.036), and GSH (r=- 0.331, p=- 0.011) only in women with RPL. Collectively, our findings indicate a possible association of chronic PAH accumulation with recurrent pregnancy loss in women.

Keywords

References

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