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    Título
    Melatonin receptors MT1 and MT2 are expressed in spermatozoa from several seasonal and nonseasonal breeder species
    Autor
    González Arto, Marta
    Vicente Carrillo, Alejandro
    Martínez Pastor, FelipeAutoridad Buleria ORCID
    Fernández Alegre, Estela
    Roca Aleu, Jorge
    Miró Roig, Jordi
    Rigau, Teresa
    Rodríguez Gil, Joan Enric
    Pérez Pé, Rosaura
    Muiño Blanco, María Teresa
    Cebrián Pérez, José A.
    Casao Gascón, Adriana
    Facultad/Centro
    Facultad de Ciencias Biologicas y Ambientales
    Área de conocimiento
    Biologia Celular
    Datos de la obra
    Theriogenology, 2016, vol. 86, n. 8
    Editor
    Elsevier
    Fecha
    2016-11
    Descripción física
    P. 1958-1968
    Abstract
    Melatonin is a ubiquitous and multipurpose molecule, and one of its roles is to regulate reproduction in some seasonal mammals. Our group has previously reported the variation in the melatonin levels in ram seminal plasma along the year and identified MT1 and MT2 receptors in ram spermatozoa. The objective of this study was to elucidate whether the presence of melatonin receptors (MT1 and MT2) in the sperm plasma membrane, and melatonin in the seminal plasma is related to seasonal breeding. For this purpose, the presence of melatonin receptors and the levels of melatonin in seminal plasma have been examined in several species: donkey and stallion as long-day breeders; red deer as a wild, short-day, highly seasonal breeder (epididymal spermatozoa); bull as a conventional nonseasonal breeder; boar as a seasonal breeder under management techniques; and dog as possible a seasonal breeder not regulated by melatonin. We have detected measurable levels of melatonin in the seminal plasma of all ejaculated semen samples (from donkey, stallion, boar, bull, and dog). Also, and for the first time, we have demonstrated the presence of MT1 and MT2 melatonin receptors in the spermatozoa of all these species, regardless their type of reproduction or sperm source (ejaculated or epididymal), using indirect immunofluorescence techniques and Western blotting. Our findings suggest that melatonin and melatonin receptors may be universally distributed in the reproductive system of mammals and that the sperm melatonin receptors cells may not be necessarily related with seasonal reproduction. Furthermore, the presence of MT1 at the cytoplasmic droplet in immature ejaculated stallion spermatozoa found in one sample and epididymal red deer spermatozoa suggests that melatonin may be involved in specific functions during spermatogenesis and sperm maturation, like protecting spermatozoa from oxidative damage, this activity being mediated through these receptors.
    Materia
    Veterinaria
    Palabras clave
    Donkey
    Stallion
    Boar
    Bull
    Deer
    Dog
    Idioma
    eng
    Tipo documental
    info:eu-repo/semantics/article
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/10797
    Versión del editor
    https://www.sciencedirect.com/science/article/pii/S0093691X16302746
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    • Artículos de revista (post-print) [2050]
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