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Indolaminergic System in Adult Rat Testes: Evidence for a Local Serotonin System.
Jiménez-Trejo, Francisco; Coronado-Mares, Isabel; Arriaga-Canon, Cristian; Herrera, Luis A; Roque-Ramírez, Bladimir; Chávez-Saldaña, Margarita; Rojas-Castañeda, Julio; Cerbón, Marco; Vigueras-Villaseñor, Rosa M.
Afiliação
  • Jiménez-Trejo F; Instituto Nacional de Pediatría, Ciudad de México, Mexico.
  • Coronado-Mares I; Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico.
  • Arriaga-Canon C; Instituto Nacional de Cancerología, Ciudad de México, Mexico.
  • Herrera LA; Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Ciudad de México, Mexico.
  • Roque-Ramírez B; Instituto Nacional de Medicina Genómica, Ciudad de México, Mexico.
  • Chávez-Saldaña M; Instituto Nacional de Medicina Genómica, Ciudad de México, Mexico.
  • Rojas-Castañeda J; Instituto Nacional de Pediatría, Ciudad de México, Mexico.
  • Cerbón M; Instituto Nacional de Pediatría, Ciudad de México, Mexico.
  • Vigueras-Villaseñor RM; Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Ciudad de México, Mexico.
Front Neuroanat ; 14: 570058, 2020.
Article em En | MEDLINE | ID: mdl-33679336
Serotonin (5-HT) is member of a family of indolamine molecules that participate in a wide variety of biological processes. Despite its important role in the regulation of local blood systems, little is known about the physiological function of 5-HT in reproductive organs, its functional implications, and its role in the reproduction of mammals. In the present work, we evaluated the localization and distribution of 5-HT (using histochemical analysis of indolamines) and different components of the serotoninergic system in rat testes. We detected local synthesis and degradation through immunofluorescence and western blot analyses against the TPH1, MAOA, 5-HTT, and VMAT1 serotonin transporters. We also identified the localization and distribution of the 5-HT1B, 5-HT2A, and 5-HT3A receptors. RT-PCR results showed the presence of the Tph1, Maoa, Slc6a4, and Htr3a genes in testes and in the brain stem (Tph1 was used as a negative control). High-performance liquid chromatography was used to determine the presence of 5-HT and the activity of tryptophan hydroxylase in testes homogenates in vitro. Our observations suggest that TPH1 activity and local 5-HT synthesis befall in rat testes. We propose that 5-HT could participate in the regulation of testosterone synthesis and in the spermatogenesis process via local serotoninergic system. However, more studies are needed before concluding that rat testes, or those of other mammals, contain an active form of tryptophan hydroxylase and produce 5-HT.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Neuroanat Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Front Neuroanat Ano de publicação: 2020 Tipo de documento: Article País de afiliação: México País de publicação: Suíça