Evidence of melatonin synthesis in the ram reproductive tract

Summary Melatonin is a ubiquitous molecule found in a wide range of fluids, one of them being ram seminal plasma, in which it can reach higher concentrations than those found in blood, suggesting an extrapineal secretion by the reproductive tract. In order to identify the source of the melatonin fou...

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Bibliographic Details
Published in:Andrology (Oxford) 2016-01, Vol.4 (1), p.163-171
Main Authors: Gonzalez‐Arto, M., Hamilton, T. R dos S., Gallego, M., Gaspar‐Torrubia, E., Aguilar, D., Serrano‐Blesa, E., Abecia, J.A., Pérez‐Pé, R., Muiño‐Blanco, T., Cebrián‐Pérez, J. A., Casao, A.
Format: Article
Language:English
Subjects:
AANAT
Acetylserotonin O-Methyltransferase - metabolism
Animals
Arylalkylamine N-Acetyltransferase - metabolism
ASTM
Epididymis - metabolism
extrapineal
Leydig Cells - metabolism
Male
Melatonin - biosynthesis
Melatonin - metabolism
Semen - metabolism
seminal plasma
Sheep
Spermatids - metabolism
Spermatocytes - metabolism
testes
Testis - cytology
Testis - metabolism
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Summary:Summary Melatonin is a ubiquitous molecule found in a wide range of fluids, one of them being ram seminal plasma, in which it can reach higher concentrations than those found in blood, suggesting an extrapineal secretion by the reproductive tract. In order to identify the source of the melatonin found in ram seminal plasma, we first tried to determine whether the melatonin levels were maintained during the day. For this purpose, melatonin concentrations were measured in seminal plasma obtained from first ejaculates of six rams at 6:00 a.m. in total darkness, at 10:00 a.m. and at 14:00 p.m. The melatonin concentration was higher (p 
ISSN:2047-2919
2047-2927
DOI:10.1111/andr.12117