Damage to Sorubim cuspicaudus Sperm Cryopreserved with Ethylene Glycol

• Published in: Animals (Basel) Vol. 13; no. 2; p. 235
• Main Authors: Atencio-García, Víctor, Padilla-Izquierdo, Denia, Robles-González, Juana, Prieto-Guevara, Martha, Pardo-Carrasco, Sandra, Espinosa-Araujo, José
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 09.01.2023; MDPI
• Subjects: Catfish; cryodamage; Cryopreservation; Damage assessment; DNA damage; DNA fragmentation; Ethylene; Evaluation; Fertility; Fish hatcheries; Flow cytometry; Fragmentation; Freeze-thawing; Freezing; Glucose; Hatching; Injuries; Kinetics; Membranes; Mitochondria; Mitochondrial DNA; Morphology; Motility; Oxidative stress; Plasma; plasma membrane; reproduction; Semen; Skim milk; Sorubim cuspicaudus; Sperm; Thawing; Colombia; St Louis Missouri; United States > US; Germany; Spain; cryodamage; plasma membrane; mitochondria; DNA fragmentation; reproduction
• ISSN: 2076-2615; 2076-2615
• DOI: 10.3390/ani13020235

The study aimed to evaluate cryo-injury during the cryopreservation in Sorubim cuspicaudus sperm with ethylene glycol (EG) at different rates (6, 8, 10%). Fresh, prefrozen, and post-thawed sperm quality as motility total, velocities, mitochondria damage (Mit-d), membrane damage (Mem-d), and DNA fragmentation (DNA-f), were examined. The Mit-d, Mem-d, and DNA-f were evaluated through flow cytometry. High motility (>95%) and a low percentage of Mem-d (1.0 ± 0.5%), Mit-d (1.4 ± 0.9%), and DNA-f (2.4 ± 0.8%) were recorded for fresh semen. Prefrozen semen increases in Mit-d and DNA-f were observed compared to fresh semen (p < 0.05). In thawed semen, increased Mit-d (2.6 to 3-fold), Mem-d (6 to 1-fold), and DNA-f (3.3 to 6.6-fold) compared to prefrozen was observed. Thawed semen showed Mit-d (34 to 37-fold), Mem-d (24.5 to 26.6-fold) and DNA-f (13 to 18.5-fold) increased high. In conclusion, the present study demonstrated that mitochondria, membrane, and DNA integrity undergo significant damage during both pre-freezing and freezing/thawing with EG inclusion percentages from 6 to 10% that affect its fertilizing capacity, which is reduced to half of that obtained with fresh semen. It is suggested that a cryoprotective solution composed of 6% EG, 6% glucose, and 5% skimmed milk powder is a useful protocol for the cryopreservation of S. cuspicaudus semen.