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Abstract:

The purpose of this study was to determine if there is any association between immunoreactive (ir) gonadotropin-releasing hormone (GnRH) fibers with different pituitary endocrine cell types in the pejerrey, Odontesthes bonariensis. Using a monoclonal antibody raised against mammalian GnRH (mGnRH) (LRH13), ir-GnRH fibers were observed passing through the pituitary stalk and reaching the three areas of the pituitary gland: rostral (RPD) and proximal pars distalis (PPD) and pars intermedia (PI). Double labeled immunocytochemistry showed ir-GnRH fibers in close association with prolactin (PRL)-producing cells in the RPD, growth hormone (GH)-producing cells in the PPD, gonadotropin (GtH)-producing cells in the PPD and the external border of the PI, and with somatolactin (SL)-producing cells in the PI. Our results show, direct morphological evidences of a close association of GnRH fibers with GH, PRL, GtH and SL-expressing cells. These results would suggest that GnRH has a broad role in the regulation of the secretion of different pituitary hormones.

Registro:

Documento: Artículo
Título:Close association of gonadotropin-releasing hormone fibers and gonadotropin, growth hormone, somatolactin and prolactin expressing cells in pejerrey, Odontesthes bonariensis
Autor:Vissio, P.G.; Stefano, A.V.; Somoza, G.M.; Maggese, M.C.; Paz, D.A.
Filiación:Laboratorio de Embriologia Animal, Depto. de Ciencias Biológicas, Ciudad Universitaria (1428), Buenos Aires, Argentina
Instituto de Neurociencia (INEUCI), Depto. de Ciencias Biológicas, Ciudad Universitaria (1428), Buenos Aires, Argentina
Palabras clave:Fish; Immunocytochemistry; Pituitary gland; Pituitary hormones; Mammalia; Odontesthes bonariensis
Año:1999
Volumen:21
Número:2
Página de inicio:121
Página de fin:127
DOI: http://dx.doi.org/10.1023/A:1007781606592
Título revista:Fish Physiology and Biochemistry
Título revista abreviado:Fish Physiol. Biochem.
ISSN:09201742
CODEN:FPBIE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09201742_v21_n2_p121_Vissio

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Citas:

---------- APA ----------
Vissio, P.G., Stefano, A.V., Somoza, G.M., Maggese, M.C. & Paz, D.A. (1999) . Close association of gonadotropin-releasing hormone fibers and gonadotropin, growth hormone, somatolactin and prolactin expressing cells in pejerrey, Odontesthes bonariensis. Fish Physiology and Biochemistry, 21(2), 121-127.
http://dx.doi.org/10.1023/A:1007781606592
---------- CHICAGO ----------
Vissio, P.G., Stefano, A.V., Somoza, G.M., Maggese, M.C., Paz, D.A. "Close association of gonadotropin-releasing hormone fibers and gonadotropin, growth hormone, somatolactin and prolactin expressing cells in pejerrey, Odontesthes bonariensis" . Fish Physiology and Biochemistry 21, no. 2 (1999) : 121-127.
http://dx.doi.org/10.1023/A:1007781606592
---------- MLA ----------
Vissio, P.G., Stefano, A.V., Somoza, G.M., Maggese, M.C., Paz, D.A. "Close association of gonadotropin-releasing hormone fibers and gonadotropin, growth hormone, somatolactin and prolactin expressing cells in pejerrey, Odontesthes bonariensis" . Fish Physiology and Biochemistry, vol. 21, no. 2, 1999, pp. 121-127.
http://dx.doi.org/10.1023/A:1007781606592
---------- VANCOUVER ----------
Vissio, P.G., Stefano, A.V., Somoza, G.M., Maggese, M.C., Paz, D.A. Close association of gonadotropin-releasing hormone fibers and gonadotropin, growth hormone, somatolactin and prolactin expressing cells in pejerrey, Odontesthes bonariensis. Fish Physiol. Biochem. 1999;21(2):121-127.
http://dx.doi.org/10.1023/A:1007781606592