Impact of Human Papillomavirus (HPV) on Sperm Parameters: Role of Oxidative Stress in Semen Quality
Keywords:
Human papillomavirus, Sperm parameters, Oxidative stress, High-risk HPV, Reactive oxygen species, 8-hydroxy-2'-deoxyguanosine, MalondialdehydeAbstract
OBJECTIVE: To study the impact of HPV infection and oxidative stress on normal sperm parameters.
METHODOLOGY: This case-control study was conducted in the Department of Dermatology and Venerology at the Teaching Hospital of Hilla, Hilla City, Iraq, from March 2023 to October 2024. The study recruited 70 male patients diagnosed with HPV infection and 70 HPV-negative volunteers between the ages of 18 and 45. HPV infection was confirmed by real-time PCR for viral DNA. Sperm functional characteristics were assessed on a computer-based sperm analyzer (CASA). Oxidative stress in semen was evaluated by measuring levels of ROS using 2',7’-dichlorofluorescein diacetate (DCFH-DA) fluorescence assay, the 8-hydroxy-2'-deoxyguanosine (8-OHdG) by ELISA assay, and the malondialdehyde (MDA) following the thiobarbituric acid assay.
RESULTS: The percentages of sperm total motility, progressive motility, and normal morphology were significantly reduced among HPV patients (p < 0.001). Seminal levels of ROS, 8-OHdG, and MDA were significantly higher (p < 0.001) in HPV patients compared to the control group. Sperm characteristics were inversely correlated with levels of oxidative stress markers. The highest impact of the viral infection on sperm parameters and on ROS levels was identified in patients with high-risk HPV (HR-HPV) genotype (29 (41.4%)) compared to (41 (58.6%)) of HPV low-risk (LR-HPV), (p < 0.001).
CONCLUSION: Patients with HPV infection display elevated oxidative stress and reduced semen quality. The inverse association between oxidative stress markers in HPV patients and semen parameters indicates that oxidative stress might contribute to male reproductive dysfunction.
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