Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development
The immunohistochemical distribution of galanin (Gal) in the brain and pituitary of Rhinella arenarum was studied during development. Gal-immunoreactivity was first observed in the brain just after hatching in anterior preoptic area, infundibular area, median eminence and pars distalis of the pituit...
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todo:paper_00408166_v40_n5_p333_Heer2023-10-03T14:51:13Z Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development Heer, T. Yovanovich, C.A. Pozzi, A.G. Paz, D.A. Bufo arenarum Development Nervous system Neuropeptide Pituitary galanin Amphibia animal cell animal experiment animal tissue article brain cortex brain development cerebrospinal fluid controlled study hatching hypophysis function hypophysis pars distalis hypothalamus immunocompetent cell immunohistochemistry immunoreactivity infundibulum larval development median eminence metamorphosis neurohypophysis nonhuman olfactory bulb olfactory epithelium olfactory nerve preoptic area pretectum protein localization rhombencephalon sexual maturity suprachiasmatic nucleus tadpole telencephalon thalamus dorsomedial nucleus Amphibia Anura Bufo arenarum The immunohistochemical distribution of galanin (Gal) in the brain and pituitary of Rhinella arenarum was studied during development. Gal-immunoreactivity was first observed in the brain just after hatching in anterior preoptic area, infundibular area, median eminence and pars distalis of the pituitary as well as in the olfactory epithelium. At the beginning of prometamorphosis new Gal-immunoreactive (ir) cells were observed in the olfactory nerve and bulb. Later in prometamorphosis new Gal-ir cells were observed in the telencephalon, suprachiasmatic nucleus, rostral rhombencephalon and in the pars nervosa of the pituitary. The most numerous accumulations of Gal-ir neurons throughout the larval development were observed in the ventral hyphothalamus where numerous Gal-ir cells of cerebrospinal fluid-contacting type were found. During metamorphic climax and soon after we did not detect Gal-ir neurons in the pallium, medial or pretectal dorsal thalamus. In the median eminence and pars distalis of the pituitary many Gal-ir fibers were found during development indicating that Gal may play a role in the modulation of hypophyseal secretion. Furthermore, the distribution of Gal-ir elements observed throughout larvae development indicates that galaninergic system maturation continues until sexual maturity. © 2008 Elsevier Ltd. All rights reserved. Fil:Yovanovich, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pozzi, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Paz, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00408166_v40_n5_p333_Heer |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bufo arenarum Development Nervous system Neuropeptide Pituitary galanin Amphibia animal cell animal experiment animal tissue article brain cortex brain development cerebrospinal fluid controlled study hatching hypophysis function hypophysis pars distalis hypothalamus immunocompetent cell immunohistochemistry immunoreactivity infundibulum larval development median eminence metamorphosis neurohypophysis nonhuman olfactory bulb olfactory epithelium olfactory nerve preoptic area pretectum protein localization rhombencephalon sexual maturity suprachiasmatic nucleus tadpole telencephalon thalamus dorsomedial nucleus Amphibia Anura Bufo arenarum |
| spellingShingle |
Bufo arenarum Development Nervous system Neuropeptide Pituitary galanin Amphibia animal cell animal experiment animal tissue article brain cortex brain development cerebrospinal fluid controlled study hatching hypophysis function hypophysis pars distalis hypothalamus immunocompetent cell immunohistochemistry immunoreactivity infundibulum larval development median eminence metamorphosis neurohypophysis nonhuman olfactory bulb olfactory epithelium olfactory nerve preoptic area pretectum protein localization rhombencephalon sexual maturity suprachiasmatic nucleus tadpole telencephalon thalamus dorsomedial nucleus Amphibia Anura Bufo arenarum Heer, T. Yovanovich, C.A. Pozzi, A.G. Paz, D.A. Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| topic_facet |
Bufo arenarum Development Nervous system Neuropeptide Pituitary galanin Amphibia animal cell animal experiment animal tissue article brain cortex brain development cerebrospinal fluid controlled study hatching hypophysis function hypophysis pars distalis hypothalamus immunocompetent cell immunohistochemistry immunoreactivity infundibulum larval development median eminence metamorphosis neurohypophysis nonhuman olfactory bulb olfactory epithelium olfactory nerve preoptic area pretectum protein localization rhombencephalon sexual maturity suprachiasmatic nucleus tadpole telencephalon thalamus dorsomedial nucleus Amphibia Anura Bufo arenarum |
| description |
The immunohistochemical distribution of galanin (Gal) in the brain and pituitary of Rhinella arenarum was studied during development. Gal-immunoreactivity was first observed in the brain just after hatching in anterior preoptic area, infundibular area, median eminence and pars distalis of the pituitary as well as in the olfactory epithelium. At the beginning of prometamorphosis new Gal-immunoreactive (ir) cells were observed in the olfactory nerve and bulb. Later in prometamorphosis new Gal-ir cells were observed in the telencephalon, suprachiasmatic nucleus, rostral rhombencephalon and in the pars nervosa of the pituitary. The most numerous accumulations of Gal-ir neurons throughout the larval development were observed in the ventral hyphothalamus where numerous Gal-ir cells of cerebrospinal fluid-contacting type were found. During metamorphic climax and soon after we did not detect Gal-ir neurons in the pallium, medial or pretectal dorsal thalamus. In the median eminence and pars distalis of the pituitary many Gal-ir fibers were found during development indicating that Gal may play a role in the modulation of hypophyseal secretion. Furthermore, the distribution of Gal-ir elements observed throughout larvae development indicates that galaninergic system maturation continues until sexual maturity. © 2008 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Heer, T. Yovanovich, C.A. Pozzi, A.G. Paz, D.A. |
| author_facet |
Heer, T. Yovanovich, C.A. Pozzi, A.G. Paz, D.A. |
| author_sort |
Heer, T. |
| title |
Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| title_short |
Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| title_full |
Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| title_fullStr |
Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| title_full_unstemmed |
Galanin: Presence and distribution in the brain and pituitary of Rhinella arenarum (Amphibia: Anura) during development |
| title_sort |
galanin: presence and distribution in the brain and pituitary of rhinella arenarum (amphibia: anura) during development |
| url |
http://hdl.handle.net/20.500.12110/paper_00408166_v40_n5_p333_Heer |
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