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dc.contributor.author
Beriotto, Agustina Carla  
dc.contributor.author
Di Yorio, María Paula  
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Pérez Sirkin, Daniela Irina  
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Toledo Solis, Francisco J.  
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Peña Marín, Emyr S.  
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Álvarez González, Carlos A.  
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Tsutsui, Kazuyoshi  
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Vissio, Paula Gabriela  
dc.date.available
2022-12-12T16:35:13Z  
dc.date.issued
2020-12  
dc.identifier.citation
Beriotto, Agustina Carla; Di Yorio, María Paula; Pérez Sirkin, Daniela Irina; Toledo Solis, Francisco J.; Peña Marín, Emyr S.; et al.; Gonadotropin-inhibitory hormone (GnIH) distribution in the brain of the ancient fish Atractosteus tropicus (Holostei, Lepisosteiformes); Academic Press Inc Elsevier Science; General and Comparative Endocrinology; 299; 12-2020; 1-13  
dc.identifier.issn
0016-6480  
dc.identifier.uri
http://hdl.handle.net/11336/180815  
dc.description.abstract
The Holostei group occupies a critical phylogenetic position as the sister group of the Teleostei. However, little is known about holostean pituitary anatomy or brain distribution of important reproductive neuropeptides, such as the gonadotropin-inhibitory hormone (GnIH). Thus, the present study set out to characterize the structure of the pituitary and to localize GnIH-immunoreactive cells in the brain of Atractosteus tropicus from the viewpoint of comparative neuroanatomy. Juveniles of both sexes were processed for general histology and immunohistochemistry. Based on the differences in cell organization, morphology, and staining properties, the neurohypophysis and three regions in the adenohypophysis were identified: the rostral and proximal pars distalis (PPD) and the pars intermedia. This last region was found to be innervated by the neurohypophysis. This organization, together with the presence of a saccus vasculosus, resembles the general teleost pituitary organization. A vast number of blood vessels were also recognized between the infundibulum floor of the hypothalamus and the PPD, evidencing the characteristic presence of a median eminence and a portal system. However, this well-developed pituitary portal system resembles that of tetrapods. As regards the immunohistochemical localization of GnIH, we found four GnIH-immunoreactive (GnIH-ir) populations in three hypothalamic nuclei (suprachiasmatic, retrotuberal, and tuberal nuclei) and one in the diencephalon (prethalamic nucleus), as well as a few scattered neurons throughout the olfactory bulbs, the telencephalon, and the intersection between them. GnIH-ir fibers showed a widespread distribution over almost all brain regions, suggesting that GnIH function is not restricted to reproduction only. In conclusion, the present study describes, for the first time, the pituitary of A. tropicus and the neuroanatomical localization of GnIH in a holostean fish that exhibits a similar distribution pattern to that of teleosts and other vertebrates, suggesting a high degree of phylogenetic conservation of this system.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Academic Press Inc Elsevier Science  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ATRACTOSTEUS TROPICUS  
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BRAIN  
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GNIH DISTRIBUTION  
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HOLOSTEI  
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IMMUNOHISTOCHEMISTRY  
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PITUITARY  
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Zoología, Ornitología, Entomología, Etología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Gonadotropin-inhibitory hormone (GnIH) distribution in the brain of the ancient fish Atractosteus tropicus (Holostei, Lepisosteiformes)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-09-07T18:26:02Z  
dc.journal.volume
299  
dc.journal.pagination
1-13  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Beriotto, Agustina Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.description.fil
Fil: Di Yorio, María Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.description.fil
Fil: Pérez Sirkin, Daniela Irina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.description.fil
Fil: Toledo Solis, Francisco J.. Universidad Juárez Autónoma de Tabasco; México  
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Fil: Peña Marín, Emyr S.. Universidad Juárez Autónoma de Tabasco; México  
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Fil: Álvarez González, Carlos A.. Universidad Juárez Autónoma de Tabasco; México  
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Fil: Tsutsui, Kazuyoshi. Waseda University; Japón  
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Fil: Vissio, Paula Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.journal.title
General and Comparative Endocrinology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0016648020303762  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ygcen.2020.113623