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Lopes S, Sousa Filho M, Silva J, Barros F, Branco MC, Evangelista LM, Souza J. Eficiência de duas técnicas de recuperação de espermatozoides epididimários de cães e avaliação seminal pós-criopreservação. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO O objetivo deste trabalho foi avaliar a recuperação de espermatozoides epididimários de cães castrados, utilizando as técnicas de fluxo retrógrado (FR) e flutuação (FL) em diluidor Tris-gema, antes e após a criopreservação. Foram coletados 30 complexos testículo-epididímos (CTE), sendo 15 para FR e 15 para FL, e, logo após a recuperação dos espermatozoides, foram analisadas as alterações morfológicas nessas células espermáticas. Após a adição do diluidor, foram avaliados os parâmetros de motilidade total (MOT) e vigor (V) espermáticos. O sêmen pós-criopreservado foi submetido ao teste de termorresistência nos tempos T0, T30, T60 e T90 minutos, além da avaliação das membranas plasmática e acrossomal por sondas fluorescentes. Não houve diferença estatística entre as técnicas quanto à MOT e ao vigor no sêmen diluído (FR-MOT: 82,3% e V: 3,4; FL-MOT: 79,6% e V: 3,2) e pós-criopreservado (FR-MOT: 34% e V: 2,8; FL-MOT: 30% e V: 2,7). A partir do T30, houve diferença significativa quanto à MOT e ao vigor nas técnicas utilizadas, e o tempo também prejudicou o acrossoma espermático a partir do T30. Conclui-se que as técnicas de recuperação de espermatozoides epididimários de cães castrados, testadas neste trabalho, podem ser utilizadas para refrigeração e criopreservação de sêmen.
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Mota Filho AC, Silva HVR, Nunes TGP, de Souza MB, de Freitas LA, de Araújo AA, da Silva LDM. Cryopreservation of canine epididymal sperm using ACP-106c and TRIS. Cryobiology 2014; 69:17-21. [PMID: 24824725 DOI: 10.1016/j.cryobiol.2014.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 04/22/2014] [Accepted: 04/24/2014] [Indexed: 11/16/2022]
Abstract
The objective was to cryopreserve sperm recovered from the canine epididymal cauda immediately after an orchiectomy. The sperm was stored for 12h at 4 °C using ACP-106c and TRIS as extenders. Sixty adult male dogs were used. The testis-epididymis complex (TEC) was removed, immersed in 0.9% saline and transported to the laboratory. The 60 TEC were divided into groups according to the 4 °C cooling time (0 h or 12 h) and according to the extender used for sperm recovery (ACP-106c or TRIS), forming 4 experimental groups: G0h-ACP, G12h-ACP, G0h-TRIS and G12h-TRIS. The sperm were recovered from the epididymal cauda using the retrograde flow technique. Next, 1.0 mL of ACP-106c or 1.0 mL of TRIS (preheated to 37 °C for 5 min) was added to the sperm of each epididymis. One week later, the sperm was thawed at 37 °C for 1 min, and its morphology, functionality and total and progressive sperm motilities were analyzed. Other parameters were obtained by Computer Assisted Semen Analysis (CASA). The data were submitted to multivariate analysis of variance (MANOVA) (P<0.05). The total motility values were 52.17 ± 1.78 and 49.8 ± 1.93 for groups G0h-ACP and G12h-ACP and 50.7 ± 2.06 and 43.90 ± 2.51 for groups G0h-TRIS and G12h-TRIS, respectively. A decrease in total sperm motility was observed after 12h of cooling for both extenders (P<0.05). ACP-106c can be used as an extender for freezing canine epididymal sperm, and the freezing procedure must be performed immediately after sperm recovery.
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Affiliation(s)
- Antônio Cavalcante Mota Filho
- Laboratory of Carnivore Reproduction, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil
| | - Herlon Victor Rodrigues Silva
- Laboratory of Carnivore Reproduction, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil
| | - Thalles Gothardo Pereira Nunes
- Laboratory of Swine Semen Technology, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil
| | - Mírley Barbosa de Souza
- Laboratory of Carnivore Reproduction, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil
| | - Luana Azevedo de Freitas
- Laboratory of Carnivore Reproduction, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil
| | - Airton Alencar de Araújo
- Faculdade de Zootecnia, Federal University of Ceara, Campus do Pici, Av. Mister Hull, 2977, CEP 60021-970 Fortaleza, CE, Brazil
| | - Lúcia Daniel Machado da Silva
- Laboratory of Carnivore Reproduction, School of Veterinary Medicine, State University of Ceara, Av. 1700, CEP Fortaleza, CE, Brazil.
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