The purpose of this study was to evaluate the dose- and time-dependent effect of caffeine treatment on the motility and viability of stallion spermatozoa at different temperatures. Six dose groups (A to F) were established with changing caffeine concentrations (from 0.625 to 10 mg/mL). The control samples were prepared by diluting the ejaculate only with physiological salt solution. The samples were examined after 0, 1, 2 and 3 h of incubation at 5 °C and 37 °C. The motility parameters were evaluated by Computer Assisted Semen Analyzer (CASA) system, and the viability was assessed by the mitochondrial toxicity test at the end of the incubation. A positive effect of the lowest tested caffeine concentration on the motility parameters was observed throughout the incubation period at 5 °C. At the end of the 3h incubation, the viability in every sample in these groups, treated with any caffeine concentration, showed lower values compared to the control. At the higher incubation temperature (37 °C), caffeine positively affected the motility in samples B (P < 0.05) and D, E, F (P < 0.001) after 3 h of incubation; however, the viability showed a slightly decreasing tendency. Our results suggest that caffeine, in an optimal concentration, may be used as a component of stallion semen extenders.
Alves, N. de C. , Diniz, S. de A. , Viegas, R. N. , Cortes, S. F. , Costa, E. D. , Freitas, M. M. , Martins-Filho, O. A. , Araújo, M. S. S. , Lana, Â. M. Q. , Wenceslau, R. R. and Lagares, M. de A. (2021): Addition of caffeine to equine thawed sperm increases motility and decreases nitrite concentration. Andrologia 53 ,e13918.
Azam, S. , Hadi, N. , Khan, U. and Hadi, M. (2003): Antioxidant and prooxidant properties of caffeine, theobromine and xanthine. Med. Sci. Monit. 9 ,BR325–BR330.
Banihani, S. A. and Khaled, H. J. (2021): Caffeine increased progressive motility of human spermatozoa in normozoospermic and asthenozoospermic semen samples and enhanced activity of seminal creatine kinase. Andrologia 53 ,e14052.
El-Gaafary, M. N. , Daader, A. H. and Ziedan, A. (1990): Effects of caffeine on bull semen quality and sperm penetration into cervical mucus. Anim. Reprod. Sci. 23 ,13–19.
Halo, Jr., M. , Bułka, K. , Antos, P. A. , Greń, A. , Slanina, T. , Ondruška, L'. , Tokárová, K. , Massányi, M. , Formicki, G. , Halo, M. and Massányi, P. (2021a): The effect of ZnO nanoparticles on rabbit spermatozoa motility and viability parameters in vitro. Saudi J. Biol. Sci. 28 ,7450–7454.
Halo, Jr., M. , Massányi, M. , Tokárová, K. , Tirpák, F. , Greifová, H. , Solár, D. , Halo, M. and Massányi, P. (2021b): High taurine concentrations negatively effect stallion spermatozoa parameters in vitro. Acta Fytotechnica et Zootechnica 24 ,15–19.
Ijaz, A. and Ducharme, R. (1995): Effect of various extenders and taurine on survival of stallion sperm cooled to 5 °C. Theriogenology 44 ,1039–1050.
Jambor, T. , Tvrdá, E. , Tušimová, E. , Kováčik, A. , Bistáková, J. , Forgács, Z. and Lukáč, N. (2017): In vitro effect of 4-nonylphenol on human chorionic gonadotropin (hCG) stimulated hormone secretion, cell viability and reactive oxygen species generation in mice Leydig cells. Environ. Pollut. 222 ,219–225.
Massányi, M. , Halo, M. , Strapáková, L. , Slanina, T. , Ivanič, P. , Strapáková, E. , Strapák, P. , Halo, M. , Greń, A. , Formicki, G. and Massányi, P. (2020): The effect of resorcinol on bovine spermatozoa parameters in vitro. Physiol. Res. 69 ,675–686.
Pariz, J. R. , Raneá, C. , Monteiro, R. A. C. , Evenson, D. P. , Drevet, J. R. and Hallak, J. (2019): Melatonin and caffeine supplementation used, respectively, as protective and stimulating agents in the cryopreservation of human sperm improves survival, viability, and motility after thawing compared to traditional TEST-Yolk Buffer. Oxid. Med. Cell. Longev. 2019: 6472945.
Rees, J. M. , Ford, W. C. L. and Hull, M. G. R. (1990): Effect of caffeine and of pentoxifylline on the motility and metabolism of human spermatozoa. Reproduction 90 ,147–156.
Rossi, M. , Gonzalez-Castro, R. and Falomo, M. E. (2020): Effect of caffeine and pentoxifylline added before or after cooling on sperm characteristics of stallion sperm. J. Equine Vet. Sci. 87 ,102902.
Rota, A. , Sabatini, C. , Przybył, A. , Ciaramelli, A. , Panzani, D. and Camillo, F. (2019): Post-thaw addition of caffeine and/or pentoxifylline affect differently motility of horse and donkey-cryopreserved spermatozoa. J. Equine Vet. Sci. 75 ,41–47.
Siudzińska, A. and Łukaszewicz, E. (2008): Effect of semen extenders and storage time on sperm morphology of four chicken breeds. J. Appl. Poult. Res. 17 ,101–108.
Slanina, T. , Miškeje, M. , Petrovičová, I. and Massányi, P. (2014): The influence of caffeine on Turkey spermatozoa motility during in vitro cultivation at 41 °C. J. Microbiol. Biotechnol. Food Sci. 3 ,157–159.
Slanina, T. , Miškeje, M. , Tirpák, F. , Blaszczyk, M. , Stawarz, R. and Massányi, P. (2018a): Effect of taurine on Turkey (Meleagris gallopavo) spermatozoa viability and motility. Czech J. Anim. Sci. 63 ,127–135.
Slanina, T. , Miškeje, M. , Tirpák, F. , Błaszczyk, M. , Formicki, G. and Massányi, P. (2018b): Caffeine strongly improves motility parameters of Turkey spermatozoa with no effect on cell viability. Acta Vet. Hung. 66 ,137–150.
Stachecki, J. J. , Ginsburg, K. A. and Randall Armant, D. (1994): Stimulation of cryopreserved epididymal spermatozoa of the domestic cat using the motility stimulants caffeine, pentoxifylline, and 2’-deoxyadenosine. J. Androl. 15 ,157–164.
Stephens, T. D. , Brooks, R. M. , Carrington, J. L. , Cheng, L. , Carrington, A. C. , Porr, Ch. A. and Splan, R. (2013): Effects of pentoxifylline, caffeine, and taurine on post-thaw motility and longevity of equine frozen semen. J. Equine Vet. Sci. 33 ,615–621.
Tirpák, F. , Greifová, H. , Lukáč, N. , Stawarz, R. and Massányi, P. (2021a): Exogenous factors affecting the functional integrity of male reproduction. Life 11 ,https://doi.org/10.3390/life11030213.
Tirpák, F. , Halo, M. , Tokárová, K. , Binkowski, L. J. , Vašíček, J. , Svoradová, A. , Błaszczyk-Altman, M. , Kováčik, A. , Tvrdá, E. , Chrenek, P. , Lukáč, N. and Massányi, P. (2021b): Composition of stallion seminal plasma and its impact on oxidative stress markers and spermatozoa quality. Life 11 ,1238.
Vizzari, F. , Massányi, M. , Knížatová, N. , Corino, C. , Rossi, R. , Ondruška, L'. , Tirpák, F. , Halo, M. and Massányi, P. (2021): Effects of dietary plant polyphenols and seaweed extract mixture on male-rabbit semen: quality traits and antioxidant markers. Saudi J. Biol. Sci. 28 ,1017–1025.
Yamaguchi, S. , Funahashi, H. and Murakami, T. (2009): Improved fertility in gilts and sows after artificial insemination of frozen-thawed boar semen by supplementation of semen extender with caffeine and CaCl2 . J. Reprod. Dev. 55 ,645–649.
Yamaguchi, S. , Suzuki, C. , Noguchi, M. , Kasa, S. , Mori, M. , Isozaki, Y. , Ueda, S. , Funahashi, H. , Kikuchi, K. , Nagai, T. and Yoshioka, K. (2013): Effects of caffeine on sperm characteristics after thawing and inflammatory response in the uterus after artificial insemination with frozen-thawed boar semen. Theriogenology 79 ,87–93.