Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters
Gonadotropin-releasing hormone (GnRH) is the hypothalamic hormone that regulates the reproductive system by stimulating release of gonadotropins from the anterior pituitary gland. The molecular variants of the reproductive neuropeptide GnRH were characterized from brain tissue of three perciform spe...
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ftunibueairesbd:todo:paper_07224060_v21_n2_p122_Miranda 2023-10-29T02:32:28+01:00 Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters Miranda, L.A. Montaner, A.D. Ansaldo, M. Affanni, J.M. Somoza, G.M. https://hdl.handle.net/20.500.12110/paper_07224060_v21_n2_p122_Miranda unknown http://hdl.handle.net/20.500.12110/paper_07224060_v21_n2_p122_Miranda info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar GnRH fish Perciformes Reproduction Reverse phase HPLC Radioimmunoassay Chaenocephalus aceratus chromatography gonadorelin high performance liquid chromatography Notothenia rossi protein analysis Pseudochaenichthys georgianus radioimmunoassay JOUR ftunibueairesbd https://doi.org/20.500.12110/paper_07224060_v21_n2_p122_Miranda 2023-10-05T01:30:33Z Gonadotropin-releasing hormone (GnRH) is the hypothalamic hormone that regulates the reproductive system by stimulating release of gonadotropins from the anterior pituitary gland. The molecular variants of the reproductive neuropeptide GnRH were characterized from brain tissue of three perciform species from Antarctic waters: Pseudochaenichthys georgianus, Chaenocephalus aceratus, and Notothenia rossi. The study involved reverse phase high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassay (RIA) with two antisera that recognize all GnRH variants already identified: PBL 45 and PBL 49. The results showed that brain extracts of P. georgianus, C. aceratus, and N: rossi contain, like those of other perciform fish, three forms of GnRH likely to be: sbGnRH (seabream GnRH), cGnRH-II (chicken GnRH II) and sGnRH (salmon GnRH). They also showed evidence for the presence of a fourth GnRH variant, chromatographically and immunologically different from the other known forms of the vertebrate hormone. Although final conclusions will require isolation, purification, and sequencing of these molecules, these results offer encouraging possibilities of further advances in the characterization of a multiplicity of GnRH molecular variants. Journal/Newspaper Antarc* Antarctic Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
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Open Polar |
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Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires) |
op_collection_id |
ftunibueairesbd |
language |
unknown |
topic |
GnRH fish Perciformes Reproduction Reverse phase HPLC Radioimmunoassay Chaenocephalus aceratus chromatography gonadorelin high performance liquid chromatography Notothenia rossi protein analysis Pseudochaenichthys georgianus radioimmunoassay |
spellingShingle |
GnRH fish Perciformes Reproduction Reverse phase HPLC Radioimmunoassay Chaenocephalus aceratus chromatography gonadorelin high performance liquid chromatography Notothenia rossi protein analysis Pseudochaenichthys georgianus radioimmunoassay Miranda, L.A. Montaner, A.D. Ansaldo, M. Affanni, J.M. Somoza, G.M. Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
topic_facet |
GnRH fish Perciformes Reproduction Reverse phase HPLC Radioimmunoassay Chaenocephalus aceratus chromatography gonadorelin high performance liquid chromatography Notothenia rossi protein analysis Pseudochaenichthys georgianus radioimmunoassay |
description |
Gonadotropin-releasing hormone (GnRH) is the hypothalamic hormone that regulates the reproductive system by stimulating release of gonadotropins from the anterior pituitary gland. The molecular variants of the reproductive neuropeptide GnRH were characterized from brain tissue of three perciform species from Antarctic waters: Pseudochaenichthys georgianus, Chaenocephalus aceratus, and Notothenia rossi. The study involved reverse phase high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassay (RIA) with two antisera that recognize all GnRH variants already identified: PBL 45 and PBL 49. The results showed that brain extracts of P. georgianus, C. aceratus, and N: rossi contain, like those of other perciform fish, three forms of GnRH likely to be: sbGnRH (seabream GnRH), cGnRH-II (chicken GnRH II) and sGnRH (salmon GnRH). They also showed evidence for the presence of a fourth GnRH variant, chromatographically and immunologically different from the other known forms of the vertebrate hormone. Although final conclusions will require isolation, purification, and sequencing of these molecules, these results offer encouraging possibilities of further advances in the characterization of a multiplicity of GnRH molecular variants. |
format |
Journal/Newspaper |
author |
Miranda, L.A. Montaner, A.D. Ansaldo, M. Affanni, J.M. Somoza, G.M. |
author_facet |
Miranda, L.A. Montaner, A.D. Ansaldo, M. Affanni, J.M. Somoza, G.M. |
author_sort |
Miranda, L.A. |
title |
Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
title_short |
Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
title_full |
Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
title_fullStr |
Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
title_full_unstemmed |
Characterization of brain gonadotropin-releasing hormone (GnRH) molecular variants in brain extracts from different perciform fishes from Antarctic waters |
title_sort |
characterization of brain gonadotropin-releasing hormone (gnrh) molecular variants in brain extracts from different perciform fishes from antarctic waters |
url |
https://hdl.handle.net/20.500.12110/paper_07224060_v21_n2_p122_Miranda |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
http://hdl.handle.net/20.500.12110/paper_07224060_v21_n2_p122_Miranda |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar |
op_doi |
https://doi.org/20.500.12110/paper_07224060_v21_n2_p122_Miranda |
_version_ |
1781053940340621312 |