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RESEARCH ARTICLE (Open Access)

Persistent organic pollutants affect steroidogenic and apoptotic activities in granulosa cells and reactive oxygen species concentrations in oocytes in the mouse

Kinga Krawczyk A , Weronika Marynowicz A , Karolina Pich A , Oliwia Jędruch B , Gabriela Kania B , Justyna Gogola-Mruk A , Wacław Tworzydło C , Zbigniew Polański B and Anna Ptak https://orcid.org/0000-0003-3634-1918 A *
+ Author Affiliations
- Author Affiliations

A Laboratory of Physiology and Toxicology of Reproduction, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland.

B Laboratory of Genetics and Evolution, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland.

C Department of Developmental Biology and Invertebrate Morphology, Institute of Zoology and Biomedical Research, Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland.

* Correspondence to: anna.ptak@uj.edu.pl

Handling Editor: Andrew Pask

Reproduction, Fertility and Development 35(3) 294-305 https://doi.org/10.1071/RD21326
Published online: 21 November 2022

© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution 4.0 International License (CC BY)

Abstract

Context: The destruction of granulosa cells (GCs), the main functional cell type in the ovary, prevents steroid hormone production, which in turn may damage oocytes, resulting in ovarian failure. The accumulation of a number of persistent organic pollutants (POPs) in the ovarian follicular fluid (FF) has been documented, which raises serious questions regarding their impact on female fertility.

Aims: We aimed to determine whether a mixture of POPs reflecting the profile found in FF influences mouse GCs or oocyte function and viability.

Methods: A mixture of POPs, comprising perfluorooctanoate, perfluorooctane sulfonate, 2,2-dichlorodiphenyldichloroethylene, polychlorinated biphenyl 153, and hexachlorobenzene, was used. In addition to using the exact concentration of POPs previously measured in human FF, we tested two other mixtures, one with10-fold lower and another with 10-fold higher concentrations of each POP.

Key results: Steroidogenesis was disrupted in GCs by the POP mixture, as demonstrated by lower oestradiol and progesterone secretion and greater lipid droplet accumulation. Furthermore, the POP mixture reduced GC viability and increased apoptosis, assessed using caspase-3 activity. The POP mixture significantly increased the number of oocytes that successfully progressed to the second meiotic metaphase and the oocyte reactive oxygen species (ROS) concentration.

Conclusions: Thus, a mixture of POPs that are typically present in human FF has detrimental effects on ovarian function: it reduces the viability of GCs, and increases the oocyte concentrations of ROS.

Implications: These results indicate that chronic exposure to POPs adversely affects female reproductive health.

Keywords: apoptosis, granulosa cell, lipid accumulation, mitochondrial activity, mouse, oocyte, persistent organic pollutant, reactive oxygen species, steroidogenesis.


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