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    Evaluation of the aquaporin molecules characterization in the sperm cells of men from different aged
    (Tubitak Scientific & Technological Research Council Turkey, 2024) Gevrek, Fikret; Gencel, Osman Serden; Gorgun, Selim; Kara, Mikail; Katar, Muzaffer
    Background/aim: Male infertility rises for many reasons, along with age; therefore, we aimed to research the characterization of aquaporin-3, 7, and 8 in human sperm belonging to different age groups. Material and methods: This study was conducted on sperm samples of men aged over 18 years. A total of 60 men were included in the study and divided into three age groups: group 1, age 18-25 years (n = 20); group 2, age 26-35 years (n = 20); and group 3, age >= 35 years (n = 20). Sperm ejaculates obtained from each participant were used for spermiogram tests, Kruger strict morphology analysis, and immunohistochemistry. Results: We observed no statistically significant differences in terms of macroscopic and microscopic sperm testing. The immunostaining score of aquaporin-3 was the lowest in group 1 and increased in group 3 and group 2, respectively (p < 0.05). Aquaporin-8 immunostaining only increased in group 2 (p < 0.05). Aquaporin-7 immunostaining scores were not different between the groups (p > 0.05). When the immunostaining scores of aquaporin molecules were compared with each other, aquaporin-7 was significantly increased compared with the others (p < 0.05). Conclusion: According to the results, it can be stated that aquaporin-3 and aquaporin-8 molecules were more expressed at age 26 to 35 years, and aquaporin-7 was densely expressed from age 18 to 25 years. If the characterization of these molecules is adversely affected, male infertility may eventually emerge. We recommend further advanced -level studies on this subject.