Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed?
- Autores
- Montaner, Alejandro Daniel; Gonzalez, Olga Mabel; Paz, Dante Agustin; Affanni, Jorge Mario; Somoza, Gustavo Manuel
- Año de publicación
- 2000
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In reptiles as in other vertebrates, multiple forms of gonadotropin-releasing hormone (GnRH) within a single brain have been identified. In this group the following GnRH molecular variants have been characterized either by direct or indirect methods: chicken GnRH I (cGnRH-I), chicken GnRH II (cGnRH-II), salmon GnRH (sGnRH) and several unidentified GnRH-like forms. In the present study GnRH variants were investigated in brain extracts of the lizard Tupinambis teguixin (= T. merinae) by combining high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassays (RIA). Two peaks showing GnRH immunoreactivity with the elution position of synthetic mammalian GnRH (mGnRH) and cGnRH-II were detected. Both peaks were further analyzed with different radioimmunoassay systems specific for mGnRH, cGnRH-I, and cGnRH-II. Pooled fractions corresponding to the first eluting peak showed no cross-reactivity when analyzed with a cGnRH-I specific assay and logit-log displacement curves were not significantly different from those of synthetic mGnRH with homologous RIA systems. The second peak showed immunological characteristics of cGnRH-II when analyzed with a specific antiserum. The first ir-GnRH peak was selected for further RP-HPLC purification showing similar chromatographic behavior as mGnRH synthetic standard. We demonstrated the absence of cGnRH-I in this lizard using well-characterized antisera. (C) 2000 Academic Press.
Fil: Montaner, Alejandro Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Gonzalez, Olga Mabel. Universidad de Buenos Aires. Facultad de Agronomia. Pabellon de Zootécnica; Argentina
Fil: Paz, Dante Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Embriología Animal; Argentina
Fil: Affanni, Jorge Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Somoza, Gustavo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ciencia y Tecnología "Dr. César Milstein". Fundación Pablo Cassará. Instituto de Ciencia y Tecnología ; Argentina - Materia
-
Brain
Gonadotropin-Releasing Hormone
Reptiles
Ria
Rp-Hplc - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/53396
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Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed?Montaner, Alejandro DanielGonzalez, Olga MabelPaz, Dante AgustinAffanni, Jorge MarioSomoza, Gustavo ManuelBrainGonadotropin-Releasing HormoneReptilesRiaRp-Hplchttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In reptiles as in other vertebrates, multiple forms of gonadotropin-releasing hormone (GnRH) within a single brain have been identified. In this group the following GnRH molecular variants have been characterized either by direct or indirect methods: chicken GnRH I (cGnRH-I), chicken GnRH II (cGnRH-II), salmon GnRH (sGnRH) and several unidentified GnRH-like forms. In the present study GnRH variants were investigated in brain extracts of the lizard Tupinambis teguixin (= T. merinae) by combining high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassays (RIA). Two peaks showing GnRH immunoreactivity with the elution position of synthetic mammalian GnRH (mGnRH) and cGnRH-II were detected. Both peaks were further analyzed with different radioimmunoassay systems specific for mGnRH, cGnRH-I, and cGnRH-II. Pooled fractions corresponding to the first eluting peak showed no cross-reactivity when analyzed with a cGnRH-I specific assay and logit-log displacement curves were not significantly different from those of synthetic mGnRH with homologous RIA systems. The second peak showed immunological characteristics of cGnRH-II when analyzed with a specific antiserum. The first ir-GnRH peak was selected for further RP-HPLC purification showing similar chromatographic behavior as mGnRH synthetic standard. We demonstrated the absence of cGnRH-I in this lizard using well-characterized antisera. (C) 2000 Academic Press.Fil: Montaner, Alejandro Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Gonzalez, Olga Mabel. Universidad de Buenos Aires. Facultad de Agronomia. Pabellon de Zootécnica; ArgentinaFil: Paz, Dante Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Embriología Animal; ArgentinaFil: Affanni, Jorge Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Somoza, Gustavo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ciencia y Tecnología "Dr. César Milstein". Fundación Pablo Cassará. Instituto de Ciencia y Tecnología ; ArgentinaAcademic Press Inc Elsevier Science2000-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/mswordapplication/pdfhttp://hdl.handle.net/11336/53396Montaner, Alejandro Daniel; Gonzalez, Olga Mabel; Paz, Dante Agustin; Affanni, Jorge Mario; Somoza, Gustavo Manuel; Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed?; Academic Press Inc Elsevier Science; General and Comparative Endocrinology; 119; 2; 3-2000; 121-1310016-6480CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1006/gcen.2000.7488info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0016648000974884info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:38Zoai:ri.conicet.gov.ar:11336/53396instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:57:38.878CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
title |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
spellingShingle |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? Montaner, Alejandro Daniel Brain Gonadotropin-Releasing Hormone Reptiles Ria Rp-Hplc |
title_short |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
title_full |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
title_fullStr |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
title_full_unstemmed |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
title_sort |
Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed? |
dc.creator.none.fl_str_mv |
Montaner, Alejandro Daniel Gonzalez, Olga Mabel Paz, Dante Agustin Affanni, Jorge Mario Somoza, Gustavo Manuel |
author |
Montaner, Alejandro Daniel |
author_facet |
Montaner, Alejandro Daniel Gonzalez, Olga Mabel Paz, Dante Agustin Affanni, Jorge Mario Somoza, Gustavo Manuel |
author_role |
author |
author2 |
Gonzalez, Olga Mabel Paz, Dante Agustin Affanni, Jorge Mario Somoza, Gustavo Manuel |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Brain Gonadotropin-Releasing Hormone Reptiles Ria Rp-Hplc |
topic |
Brain Gonadotropin-Releasing Hormone Reptiles Ria Rp-Hplc |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
In reptiles as in other vertebrates, multiple forms of gonadotropin-releasing hormone (GnRH) within a single brain have been identified. In this group the following GnRH molecular variants have been characterized either by direct or indirect methods: chicken GnRH I (cGnRH-I), chicken GnRH II (cGnRH-II), salmon GnRH (sGnRH) and several unidentified GnRH-like forms. In the present study GnRH variants were investigated in brain extracts of the lizard Tupinambis teguixin (= T. merinae) by combining high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassays (RIA). Two peaks showing GnRH immunoreactivity with the elution position of synthetic mammalian GnRH (mGnRH) and cGnRH-II were detected. Both peaks were further analyzed with different radioimmunoassay systems specific for mGnRH, cGnRH-I, and cGnRH-II. Pooled fractions corresponding to the first eluting peak showed no cross-reactivity when analyzed with a cGnRH-I specific assay and logit-log displacement curves were not significantly different from those of synthetic mGnRH with homologous RIA systems. The second peak showed immunological characteristics of cGnRH-II when analyzed with a specific antiserum. The first ir-GnRH peak was selected for further RP-HPLC purification showing similar chromatographic behavior as mGnRH synthetic standard. We demonstrated the absence of cGnRH-I in this lizard using well-characterized antisera. (C) 2000 Academic Press. Fil: Montaner, Alejandro Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Gonzalez, Olga Mabel. Universidad de Buenos Aires. Facultad de Agronomia. Pabellon de Zootécnica; Argentina Fil: Paz, Dante Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental. Laboratorio de Embriología Animal; Argentina Fil: Affanni, Jorge Mario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Somoza, Gustavo Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Ciencia y Tecnología "Dr. César Milstein". Fundación Pablo Cassará. Instituto de Ciencia y Tecnología ; Argentina |
description |
In reptiles as in other vertebrates, multiple forms of gonadotropin-releasing hormone (GnRH) within a single brain have been identified. In this group the following GnRH molecular variants have been characterized either by direct or indirect methods: chicken GnRH I (cGnRH-I), chicken GnRH II (cGnRH-II), salmon GnRH (sGnRH) and several unidentified GnRH-like forms. In the present study GnRH variants were investigated in brain extracts of the lizard Tupinambis teguixin (= T. merinae) by combining high-performance liquid chromatography (RP-HPLC) followed by radioimmunoassays (RIA). Two peaks showing GnRH immunoreactivity with the elution position of synthetic mammalian GnRH (mGnRH) and cGnRH-II were detected. Both peaks were further analyzed with different radioimmunoassay systems specific for mGnRH, cGnRH-I, and cGnRH-II. Pooled fractions corresponding to the first eluting peak showed no cross-reactivity when analyzed with a cGnRH-I specific assay and logit-log displacement curves were not significantly different from those of synthetic mGnRH with homologous RIA systems. The second peak showed immunological characteristics of cGnRH-II when analyzed with a specific antiserum. The first ir-GnRH peak was selected for further RP-HPLC purification showing similar chromatographic behavior as mGnRH synthetic standard. We demonstrated the absence of cGnRH-I in this lizard using well-characterized antisera. (C) 2000 Academic Press. |
publishDate |
2000 |
dc.date.none.fl_str_mv |
2000-03 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/53396 Montaner, Alejandro Daniel; Gonzalez, Olga Mabel; Paz, Dante Agustin; Affanni, Jorge Mario; Somoza, Gustavo Manuel; Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed?; Academic Press Inc Elsevier Science; General and Comparative Endocrinology; 119; 2; 3-2000; 121-131 0016-6480 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/53396 |
identifier_str_mv |
Montaner, Alejandro Daniel; Gonzalez, Olga Mabel; Paz, Dante Agustin; Affanni, Jorge Mario; Somoza, Gustavo Manuel; Gonadotropin-releasing hormone (GnRH) variants in a lizard brain: Is mammalian GnRH being expressed?; Academic Press Inc Elsevier Science; General and Comparative Endocrinology; 119; 2; 3-2000; 121-131 0016-6480 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1006/gcen.2000.7488 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0016648000974884 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/msword application/pdf |
dc.publisher.none.fl_str_mv |
Academic Press Inc Elsevier Science |
publisher.none.fl_str_mv |
Academic Press Inc Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269474133114880 |
score |
13.13397 |