Expression of Aquaglyceroporins in Spermatozoa from Wild Ruminants Is Influenced by Photoperiod and Thyroxine Concentrations



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Santiago Moreno, Julián and Pequeño, Belén and Martinez Madrid, Belen and Castaño, Cristina and Bóveda, Paula and Velázquez, Rosario and Toledano Díaz, Adolfo and Álvarez Rodríguez, Manuel and Rodríguez Martínez, Heriberto (2022) Expression of Aquaglyceroporins in Spermatozoa from Wild Ruminants Is Influenced by Photoperiod and Thyroxine Concentrations. International Journal of Molecular Sciences, 23 (6). p. 2903. ISSN 1422-0067

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This work identified the presence of AQPs in frozen-thawed sperm of wild ruminants and assessed the influence of the interaction between photoperiod and thyroxine on AQP expression, and on testosterone secretion. Thyroxine and melatonin were administered to ibexes. In a second experiment, performed in mouflons, circulating thyroxine was reduced via treatment with propylthiouracil (PTU), and an artificial long day (LD) photoperiod established. In the ibexes, the melatonin treatment increased the blood plasma testosterone concentration, reduced the cryoresistance ratio (CR) for sperm viability and the presence of an intact acrosome, and increased the percentage of sperm with AQP7 in the acrosome and of AQP3 and AQP10 in the midpiece. In the mouflons, neither the PTU treatment, the LD, nor the combination of both affected the CR of any sperm variable. The percentage of sperm with AQP3 increased in the post-acrosome region but decreased in the tail in the LD+PTU group. The percentage of sperm with AQP10 in the principal piece and endpiece was lower in the PTU+LD group than in the control and LD groups. The influence of photoperiod/melatonin on AQP expression might be indirectly exerted through changes in the testosterone concentration, and thus ultimately affect sperm cryoresistance.

Item Type:Article
Uncontrolled Keywords:Iberian ibex; mouflon; aquaglyceroporins; melatonin; sperm cryoresistance; thyroxine
Subjects:Medical sciences > Veterinary > Feral and exotic animals
ID Code:73371
Deposited On:06 Jul 2022 14:27
Last Modified:07 Jul 2022 07:20

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