Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps
Previous studies have shown that different gonadotropin-releasing hormone (GnRH) molecular forms are present in different groups of bony fish. In the present study, we have investigated the possible influence of the antarctic environmental contributions upon the distribution and biochemical patterns...
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ftunivgenova:oai:iris.unige.it:11567/265225 2024-02-11T09:57:09+01:00 Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps PESTARINO, MARIO M. MASSARI A. ALBERTON CANDIANI, SIMONA VALLARINO, MAURO Pestarino, Mario M., Massari A., Alberton Candiani, Simona Vallarino, Mauro 1998 STAMPA https://hdl.handle.net/11567/265225 https://doi.org/10.1007/S00300-006-0222-6 eng eng Springer country:DEU place:Heidelberg info:eu-repo/semantics/altIdentifier/wos/WOS:000076460600008 volume:20 firstpage:352 lastpage:356 numberofpages:5 journal:POLAR BIOLOGY https://hdl.handle.net/11567/265225 doi:10.1007/S00300-006-0222-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031775030 info:eu-repo/semantics/article 1998 ftunivgenova https://doi.org/10.1007/S00300-006-0222-6 2024-01-24T17:35:47Z Previous studies have shown that different gonadotropin-releasing hormone (GnRH) molecular forms are present in different groups of bony fish. In the present study, we have investigated the possible influence of the antarctic environmental contributions upon the distribution and biochemical patterns of GnRH-related molecules. The immunocytochemical distribution of GnRH-like peptides has been studied in the brain of the antarctic fish, Notothenia coriiceps, using antisera raised against three variants of GnRH: mammalian (m-GnRH), chicken (cII-GnRH) and salmon (s-GnRH). cII-GnRH immunoreactivity appears confined to cell bodies located in the lateral hypothalamus, the ventral thalamus and the midbrain rostral tegmentum; immunoreactive nerve fibers densely innervated the hypothalamic periventricular region. By contrast, m-GnRH-like immunoreactive neurons are present exclusively in the tor trs semicircularis of the mesencephalon and in the outer plexiphorm layers of the optic tectum. These findings suggest that cII-GnRH-like peptides appear to function as hypophysiotropic factors, as demonstrated in other species of bony fish, whereas m-GnRH-like peptides could be involved in modulatory pathways of vestibular and visual functions of N. coriiceps. Incubation with s-GnRH antiserum failed to prove the occurrence of immunoreactive elements; consequently, at least two molecular forms related to cII-GnRH and m-GnRH seem to act as hypophysiotropic and neuromodulatory factors in the brain of Notothenia coriiceps. Moreover, m-GnRH immunoreactivity in ependymal tanycytes suggests the involvement of such specialized glial cells in neuroendocrine function by linking the cerebrospinal fluid and the median eminence, as demonstrated in mammals. Previous studies have shown that different gonadotropin-releasing hormone (GnRH) molecular forms are present in different groups of bony fish. In the present study, we have investigated the possible influence of the antarctic environmental contributions upon the distribution and ... Article in Journal/Newspaper Antarc* Antarctic antartic* Università degli Studi di Genova: CINECA IRIS Antarctic The Antarctic Polar Biology 30 5 625 634 |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
Previous studies have shown that different gonadotropin-releasing hormone (GnRH) molecular forms are present in different groups of bony fish. In the present study, we have investigated the possible influence of the antarctic environmental contributions upon the distribution and biochemical patterns of GnRH-related molecules. The immunocytochemical distribution of GnRH-like peptides has been studied in the brain of the antarctic fish, Notothenia coriiceps, using antisera raised against three variants of GnRH: mammalian (m-GnRH), chicken (cII-GnRH) and salmon (s-GnRH). cII-GnRH immunoreactivity appears confined to cell bodies located in the lateral hypothalamus, the ventral thalamus and the midbrain rostral tegmentum; immunoreactive nerve fibers densely innervated the hypothalamic periventricular region. By contrast, m-GnRH-like immunoreactive neurons are present exclusively in the tor trs semicircularis of the mesencephalon and in the outer plexiphorm layers of the optic tectum. These findings suggest that cII-GnRH-like peptides appear to function as hypophysiotropic factors, as demonstrated in other species of bony fish, whereas m-GnRH-like peptides could be involved in modulatory pathways of vestibular and visual functions of N. coriiceps. Incubation with s-GnRH antiserum failed to prove the occurrence of immunoreactive elements; consequently, at least two molecular forms related to cII-GnRH and m-GnRH seem to act as hypophysiotropic and neuromodulatory factors in the brain of Notothenia coriiceps. Moreover, m-GnRH immunoreactivity in ependymal tanycytes suggests the involvement of such specialized glial cells in neuroendocrine function by linking the cerebrospinal fluid and the median eminence, as demonstrated in mammals. Previous studies have shown that different gonadotropin-releasing hormone (GnRH) molecular forms are present in different groups of bony fish. In the present study, we have investigated the possible influence of the antarctic environmental contributions upon the distribution and ... |
author2 |
Pestarino, Mario M., Massari A., Alberton Candiani, Simona Vallarino, Mauro |
format |
Article in Journal/Newspaper |
author |
PESTARINO, MARIO M. MASSARI A. ALBERTON CANDIANI, SIMONA VALLARINO, MAURO |
spellingShingle |
PESTARINO, MARIO M. MASSARI A. ALBERTON CANDIANI, SIMONA VALLARINO, MAURO Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
author_facet |
PESTARINO, MARIO M. MASSARI A. ALBERTON CANDIANI, SIMONA VALLARINO, MAURO |
author_sort |
PESTARINO, MARIO |
title |
Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
title_short |
Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
title_full |
Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
title_fullStr |
Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
title_full_unstemmed |
Distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, Notothenia coriiceps |
title_sort |
distribution of immunoreactive multiple forms of gonadotropin-releasing hormone in the brain of the antartic fish, notothenia coriiceps |
publisher |
Springer |
publishDate |
1998 |
url |
https://hdl.handle.net/11567/265225 https://doi.org/10.1007/S00300-006-0222-6 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic antartic* |
genre_facet |
Antarc* Antarctic antartic* |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000076460600008 volume:20 firstpage:352 lastpage:356 numberofpages:5 journal:POLAR BIOLOGY https://hdl.handle.net/11567/265225 doi:10.1007/S00300-006-0222-6 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0031775030 |
op_doi |
https://doi.org/10.1007/S00300-006-0222-6 |
container_title |
Polar Biology |
container_volume |
30 |
container_issue |
5 |
container_start_page |
625 |
op_container_end_page |
634 |
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1790608987066990592 |