Clinical and Experimental Reproductive Medicine

The Korean Society for Reproductive Medicine (대한생식의학회)
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Seminal prolactin is associated with HSP90 transcript content in ejaculated spermatozoa

  • Mehran Dorostghoal (Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz) ;
  • Hamid Galehdari (Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz) ;
  • Masoud Hemadi (Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Science) ;
  • Fahimeh Izadi (Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz)
  • Received : 2022.10.22
  • Accepted : 2023.04.06
  • Published : 2023.06.30
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Abstract

Objective: Evidence indicates that an imbalance between the production of reactive oxygen species and defense ability of antioxidants has clinical significance in the pathophysiology of male infertility. To investigate the role of seminal prolactin (PRL) in the fertilizing capacity of men, the present study evaluated the associations of seminal PRL levels with semen parameters and heat shock protein 90 (HSP90) transcript abundance in ejaculated spermatozoa. Methods: We assessed seminal PRL levels and the abundance of HSP90 transcripts in ejaculated spermatozoa from normozoospermic donors (n=18) and infertile men (n=18). The transcript content of HSP90 in ejaculated spermatozoa was analyzed using real-time polymerase chain reaction. Results: Seminal PRL concentrations in infertile patients were significantly lower (p=0.004) than in fertile controls. Seminal PRL showed relatively good diagnostic power for discriminating infertile men (area under the curve=0.776; 95% confidence interval, 0.568 to 0.934; p=0.005). Significant positive correlations were seen between seminal PRL levels and sperm count (r=0.400, p=0.016) and progressive motility (r=0.422, p=0.010). Infertile patients showed a significantly higher abundance of sperm HSP90 than fertile controls (p=0.040). Sperm HSP90 transcript abundance was negatively correlated with sperm progressive motility (r=0.394, p=0.018). Men with higher seminal PRL levels exhibited a lower abundance of sperm HSP90 transcripts. Conclusion: Our finding demonstrated associations among semen quality, seminal PRL levels, and the abundance of HSP90 transcripts in ejaculated spermatozoa. Seminal PRL may contribute to male fertility by maintaining the seminal antioxidant capacity and may have the potential to act as a diagnostic and prognostic biomarker.

Keywords

Acknowledgement

The Vice Chancellor for Research of Shahid Chamran University of Ahvaz provided the research grant # 97/3/02/26247 for present study.

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