Back to Search
Start Over
Indolaminergic System in Adult Rat Testes: Evidence for a Local Serotonin System
- Source :
- Frontiers in Neuroanatomy, Frontiers in Neuroanatomy, Vol 14 (2021)
- Publication Year :
- 2020
-
Abstract
- 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-HT3Areceptors. 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 homogenatesin 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.
- Subjects :
- 0301 basic medicine
Neuroscience (miscellaneous)
5-HT
testes
serotoninomics
Biology
Serotonergic
lcsh:RC321-571
lcsh:QM1-695
03 medical and health sciences
Cellular and Molecular Neuroscience
chemistry.chemical_compound
0302 clinical medicine
Receptor
lcsh:Neurosciences. Biological psychiatry. Neuropsychiatry
Testosterone
5-HT receptor
Original Research
indolamine
TPH1
lcsh:Human anatomy
Tryptophan hydroxylase
spermatogenesis
Cell biology
serotonin
Neuroanatomy
030104 developmental biology
Indolamines
chemistry
030220 oncology & carcinogenesis
Serotonin
Anatomy
Subjects
Details
- ISSN :
- 16625129
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- Frontiers in neuroanatomy
- Accession number :
- edsair.doi.dedup.....3746ad1a64cf4fb1d78e8e10f943cb81