Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)
Identifieur interne : 001B81 ( Main/Curation ); précédent : 001B80; suivant : 001B82Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)
Auteurs : Emmanuel Leprêtre [France] ; Isabelle Anglade [France] ; Patrick Williot [France] ; Frans Vandesande [Belgique] ; Gérard Tramu [France] ; Gérard Kah [France]Source :
- Journal of Comparative Neurology [ 0021-9967 ] ; 1993-11-22.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Acipenser baeri, Amino Acid Sequence, Animals, Antibody Specificity, Brain (cytology), Brain (vertebrata), Brain Chemistry (physiology), Chicken, Chickens, Comparative study, Distribution, Fishes (metabolism), Gonadotropin RH, Gonadotropin-Releasing Hormone (immunology), Gonadotropin-Releasing Hormone (metabolism), Immunohistochemistry, Mammalia, Mammals, Molecular Sequence Data, fish, immunocytochemistry, neuropeptide, pituitary, reproduction.
- MESH :
- chemical , immunology : Gonadotropin-Releasing Hormone.
- cytology : Brain.
- metabolism : Fishes, Gonadotropin-Releasing Hormone.
- physiology : Brain Chemistry.
- Amino Acid Sequence, Animals, Antibody Specificity, Chickens, Immunohistochemistry, Mammals, Molecular Sequence Data.
Abstract
The brain of the sturgeon has recently been shown to contain at least two forms of GnRH (gonadotropin‐releasing hormone), mammalian GnRH (mGnRH) and chicken GnRH‐II (cGnRH‐II). In this study, we compared the distribution of immunoreactive (ir) mGnRH and cGnRH‐II in the brain of immature Siberian sturgeons (Acipenser baeri). The overall distribution of mGnRH was very similar to the distribution of sGnRH in teleosts such as salmonids or cyprinids. mGnRH‐ir perikarya were observed in the olfactory nerves and bulbs, the telencephalon, the preoptic region, and the mediobasal hypothalamus. All these cell bodies are located along a continuum of ir‐fibers that could be traced from the olfactory nerve to the nerve to the hypothalamopituitary interface. No ir‐fibers were observed in the anterior lobe of the pituitary, but a few were seen to enter the neurointermediate lobe. mGnRH‐ir fibers were detected in many parts of the brain, particularly in the forebrain. mGnRH‐ir cerebrospinal fluid‐containing cells were observed in the telencephalon, the preoptic region, and the mediobasal hypothalamus. In contrast, cGnRH‐II was present mainly in the posterior brain, although a few ir axons were seen in the above‐mentioned territories. In particular, cGnRH‐II‐ir cell bodies, negative for mGnRH, were consistently observed in the nucleus of the medial longitudinal fasciculus of the midbrain tegmentum. The cGnRH‐II innervation in the optic tectum, cerebellum, vagal lobe, and medulla oblongata was more abundant than the mGnRH innervation in the same areas. This study provides evidence that the organization of the GnRH systems in a primitive bony fish is, highly similar to that reported in teleosts and further documents the differential distribution of two forms of GnRH in the brain of vertebrates. © 1993 Wiley‐Liss,Inc.
Url:
DOI: 10.1002/cne.903370404
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Comp. Neurol.</title><idno type="ISSN">0021-9967</idno><idno type="eISSN">1096-9861</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="1993-11-22">1993-11-22</date><biblScope unit="volume">337</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="568">568</biblScope><biblScope unit="page" to="583">583</biblScope></imprint><idno type="ISSN">0021-9967</idno></series><idno type="istex">2A8BD93F7FC3C24C6759E25AC017E90950807B4D</idno><idno type="DOI">10.1002/cne.903370404</idno><idno type="ArticleID">CNE903370404</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-9967</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser baeri</term><term>Amino Acid Sequence</term><term>Animals</term><term>Antibody Specificity</term><term>Brain (cytology)</term><term>Brain (vertebrata)</term><term>Brain Chemistry (physiology)</term><term>Chicken</term><term>Chickens</term><term>Comparative study</term><term>Distribution</term><term>Fishes (metabolism)</term><term>Gonadotropin RH</term><term>Gonadotropin-Releasing Hormone (immunology)</term><term>Gonadotropin-Releasing Hormone (metabolism)</term><term>Immunohistochemistry</term><term>Mammalia</term><term>Mammals</term><term>Molecular Sequence Data</term><term>fish</term><term>immunocytochemistry</term><term>neuropeptide</term><term>pituitary</term><term>reproduction</term></keywords><keywords scheme="MESH" type="chemical" qualifier="immunology" xml:lang="en"><term>Gonadotropin-Releasing Hormone</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Brain</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Fishes</term><term>Gonadotropin-Releasing Hormone</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Brain Chemistry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Amino Acid Sequence</term><term>Animals</term><term>Antibody Specificity</term><term>Chickens</term><term>Immunohistochemistry</term><term>Mammals</term><term>Molecular Sequence Data</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Acipenser baeri</term><term>Distribution</term><term>Encéphale</term><term>Etude comparative</term><term>Gonadotrophine RH</term><term>Mammalia</term><term>Poulet</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The brain of the sturgeon has recently been shown to contain at least two forms of GnRH (gonadotropin‐releasing hormone), mammalian GnRH (mGnRH) and chicken GnRH‐II (cGnRH‐II). In this study, we compared the distribution of immunoreactive (ir) mGnRH and cGnRH‐II in the brain of immature Siberian sturgeons (Acipenser baeri). The overall distribution of mGnRH was very similar to the distribution of sGnRH in teleosts such as salmonids or cyprinids. mGnRH‐ir perikarya were observed in the olfactory nerves and bulbs, the telencephalon, the preoptic region, and the mediobasal hypothalamus. All these cell bodies are located along a continuum of ir‐fibers that could be traced from the olfactory nerve to the nerve to the hypothalamopituitary interface. No ir‐fibers were observed in the anterior lobe of the pituitary, but a few were seen to enter the neurointermediate lobe. mGnRH‐ir fibers were detected in many parts of the brain, particularly in the forebrain. mGnRH‐ir cerebrospinal fluid‐containing cells were observed in the telencephalon, the preoptic region, and the mediobasal hypothalamus. In contrast, cGnRH‐II was present mainly in the posterior brain, although a few ir axons were seen in the above‐mentioned territories. In particular, cGnRH‐II‐ir cell bodies, negative for mGnRH, were consistently observed in the nucleus of the medial longitudinal fasciculus of the midbrain tegmentum. The cGnRH‐II innervation in the optic tectum, cerebellum, vagal lobe, and medulla oblongata was more abundant than the mGnRH innervation in the same areas. This study provides evidence that the organization of the GnRH systems in a primitive bony fish is, highly similar to that reported in teleosts and further documents the differential distribution of two forms of GnRH in the brain of vertebrates. © 1993 Wiley‐Liss,Inc.</div></front></TEI><double idat="0021-9967:1993:Lepretre E:comparative:distribution:of"><INIST><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Comparative distribution of mammalian GnRH (gonadotrophin-releasing hormone) and chicken GnRH-II in the brain of the immature Siberian sturgeon (Acipenser baeri)</title><author><name sortKey="Lepretre, E" sort="Lepretre, E" uniqKey="Lepretre E" first="E." last="Lepretre">E. Lepretre</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Anglade, I" sort="Anglade, I" uniqKey="Anglade I" first="I." last="Anglade">I. Anglade</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Williot, P" sort="Williot, P" uniqKey="Williot P" first="P." last="Williot">P. Williot</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEMAGREF</s1><s2>33610 Cestas</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Cestas</settlement></placeName></affiliation></author><author><name sortKey="Vandesande, F" sort="Vandesande, F" uniqKey="Vandesande F" first="F." last="Vandesande">F. Vandesande</name></author><author><name sortKey="Tramu, G" sort="Tramu, G" uniqKey="Tramu G" first="G." last="Tramu">G. Tramu</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Kah, O" sort="Kah, O" uniqKey="Kah O" first="O." last="Kah">O. Kah</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">94-0073900</idno><date when="1993">1993</date><idno type="stanalyst">PASCAL 94-0073900 INIST</idno><idno type="RBID">Pascal:94-0073900</idno><idno type="wicri:Area/PascalFrancis/Corpus">000537</idno><idno type="wicri:Area/PascalFrancis/Curation">000575</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000548</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000548</idno><idno type="wicri:doubleKey">0021-9967:1993:Lepretre E:comparative:distribution:of</idno><idno type="wicri:Area/Main/Merge">001D39</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Comparative distribution of mammalian GnRH (gonadotrophin-releasing hormone) and chicken GnRH-II in the brain of the immature Siberian sturgeon (Acipenser baeri)</title><author><name sortKey="Lepretre, E" sort="Lepretre, E" uniqKey="Lepretre E" first="E." last="Lepretre">E. Lepretre</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Anglade, I" sort="Anglade, I" uniqKey="Anglade I" first="I." last="Anglade">I. Anglade</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Williot, P" sort="Williot, P" uniqKey="Williot P" first="P." last="Williot">P. Williot</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>CEMAGREF</s1><s2>33610 Cestas</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Cestas</settlement></placeName></affiliation></author><author><name sortKey="Vandesande, F" sort="Vandesande, F" uniqKey="Vandesande F" first="F." last="Vandesande">F. Vandesande</name></author><author><name sortKey="Tramu, G" sort="Tramu, G" uniqKey="Tramu G" first="G." last="Tramu">G. Tramu</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Kah, O" sort="Kah, O" uniqKey="Kah O" first="O." last="Kah">O. Kah</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>CNRS, URA 339 lab. neurocytochimie fonctionelle</s1><s2>33405 Talence</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of comparative neurology : (1911)</title><title level="j" type="abbreviated">J. comp. neurol. : (1911)</title><idno type="ISSN">0021-9967</idno><imprint><date when="1993">1993</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of comparative neurology : (1911)</title><title level="j" type="abbreviated">J. comp. neurol. : (1911)</title><idno type="ISSN">0021-9967</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser baeri</term><term>Brain (vertebrata)</term><term>Chicken</term><term>Comparative study</term><term>Distribution</term><term>Gonadotropin RH</term><term>Mammalia</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Gonadotrophine RH</term><term>Encéphale</term><term>Etude comparative</term><term>Distribution</term><term>Mammalia</term><term>Acipenser baeri</term><term>Poulet</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The brain of the sturgeon has recently been shown to contain at least two forms of GnRH (gonadotropin-releasing hormone), mammalian GnRH (mGnRH) and chicken GnRH-II (cGnRH-II). In this study, we compared the distribution of immunoreactive (ir) mGnRH and cGnRH-II in the brain of immature Siberian sturgeons (Acipenser baeri). The overall distribution of mGnRH was very similar to the distribution of sGnRH in teleosts such as salmonids or cyprinids. mGnRH-ir perikarya were observed in the olfactory nerves and bulbs, the telencephalon, the preoptic region, and the mediobasal hypothalamus. All these cell bodies are located along a continuum of ir-fibers that could be traced from the olfactory nerve to the hypothalamopituitary interface</div></front></TEI></INIST><ISTEX><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)</title><author><name sortKey="Lepretre, Emmanuel" sort="Lepretre, Emmanuel" uniqKey="Lepretre E" first="Emmanuel" last="Leprêtre">Emmanuel Leprêtre</name></author><author><name sortKey="Anglade, Isabelle" sort="Anglade, Isabelle" uniqKey="Anglade I" first="Isabelle" last="Anglade">Isabelle Anglade</name></author><author><name sortKey="Williot, Patrick" sort="Williot, Patrick" uniqKey="Williot P" first="Patrick" last="Williot">Patrick Williot</name><affiliation><country>France</country><placeName><settlement type="city">Bordeaux</settlement><settlement type="town">Cestas</settlement><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region></placeName><orgName type="laboratoire" n="5">Cemagref - centre de Bordeaux</orgName><orgName type="institution">Centre national du machinisme agricole, du génie rural, des eaux et des forêts</orgName><orgName type="institution">Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture</orgName></affiliation></author><author><name sortKey="Vandesande, Frans" sort="Vandesande, Frans" uniqKey="Vandesande F" first="Frans" last="Vandesande">Frans Vandesande</name></author><author><name sortKey="Tramu, Gerard" sort="Tramu, Gerard" uniqKey="Tramu G" first="Gérard" last="Tramu">Gérard Tramu</name></author><author><name sortKey="Kah, Gerard" sort="Kah, Gerard" uniqKey="Kah G" first="Gérard" last="Kah">Gérard Kah</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:2A8BD93F7FC3C24C6759E25AC017E90950807B4D</idno><date when="1993" year="1993">1993</date><idno type="doi">10.1002/cne.903370404</idno><idno type="url">https://api.istex.fr/document/2A8BD93F7FC3C24C6759E25AC017E90950807B4D/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001343</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001343</idno><idno type="wicri:Area/Istex/Curation">001341</idno><idno type="wicri:Area/Istex/Checkpoint">001120</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">001120</idno><idno type="wicri:doubleKey">0021-9967:1993:Lepretre E:comparative:distribution:of</idno><idno type="wicri:source">PubMed</idno><idno type="RBID">pubmed:8288771</idno><idno type="wicri:Area/PubMed/Corpus">000712</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000712</idno><idno type="wicri:Area/PubMed/Curation">000712</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000712</idno><idno type="wicri:Area/PubMed/Checkpoint">000712</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000712</idno><idno type="wicri:Area/Ncbi/Merge">000860</idno><idno type="wicri:Area/Ncbi/Curation">000860</idno><idno type="wicri:Area/Ncbi/Checkpoint">000860</idno><idno type="wicri:doubleKey">0021-9967:1993:Lepretre E:comparative:distribution:of</idno><idno type="wicri:Area/Main/Merge">001D11</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)</title><author><name sortKey="Lepretre, Emmanuel" sort="Lepretre, Emmanuel" uniqKey="Lepretre E" first="Emmanuel" last="Leprêtre">Emmanuel Leprêtre</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Anglade, Isabelle" sort="Anglade, Isabelle" uniqKey="Anglade I" first="Isabelle" last="Anglade">Isabelle Anglade</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Williot, Patrick" sort="Williot, Patrick" uniqKey="Williot P" first="Patrick" last="Williot">Patrick Williot</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>CEMAGREF, BP 3, 33610 Cestas</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Cestas</settlement></placeName><placeName><settlement type="city">Bordeaux</settlement><settlement type="town">Cestas</settlement><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region></placeName><orgName type="laboratoire" n="5">Cemagref - centre de Bordeaux</orgName><orgName type="institution">Centre national du machinisme agricole, du génie rural, des eaux et des forêts</orgName><orgName type="institution">Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture</orgName></affiliation></author><author><name sortKey="Vandesande, Frans" sort="Vandesande, Frans" uniqKey="Vandesande F" first="Frans" last="Vandesande">Frans Vandesande</name><affiliation wicri:level="1"><country xml:lang="fr">Belgique</country><wicri:regionArea>Laboratory of Neuroendocrinology, Zoological Institute, B‐3000 Leuven</wicri:regionArea><wicri:noRegion>B‐3000 Leuven</wicri:noRegion></affiliation></author><author><name sortKey="Tramu, Gerard" sort="Tramu, Gerard" uniqKey="Tramu G" first="Gérard" last="Tramu">Gérard Tramu</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author><author><name sortKey="Kah, Gerard" sort="Kah, Gerard" uniqKey="Kah G" first="Gérard" last="Kah">Gérard Kah</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, Avenue des Facultés, 33405 Talence Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">Talence</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Comparative Neurology</title><title level="j" type="abbrev">J. Comp. Neurol.</title><idno type="ISSN">0021-9967</idno><idno type="eISSN">1096-9861</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="1993-11-22">1993-11-22</date><biblScope unit="volume">337</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="568">568</biblScope><biblScope unit="page" to="583">583</biblScope></imprint><idno type="ISSN">0021-9967</idno></series><idno type="istex">2A8BD93F7FC3C24C6759E25AC017E90950807B4D</idno><idno type="DOI">10.1002/cne.903370404</idno><idno type="ArticleID">CNE903370404</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-9967</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amino Acid Sequence</term><term>Animals</term><term>Antibody Specificity</term><term>Brain (cytology)</term><term>Brain Chemistry (physiology)</term><term>Chickens</term><term>Fishes (metabolism)</term><term>Gonadotropin-Releasing Hormone (immunology)</term><term>Gonadotropin-Releasing Hormone (metabolism)</term><term>Immunohistochemistry</term><term>Mammals</term><term>Molecular Sequence Data</term><term>fish</term><term>immunocytochemistry</term><term>neuropeptide</term><term>pituitary</term><term>reproduction</term></keywords><keywords scheme="MESH" type="chemical" qualifier="immunology" xml:lang="en"><term>Gonadotropin-Releasing Hormone</term></keywords><keywords scheme="MESH" qualifier="cytology" xml:lang="en"><term>Brain</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Fishes</term><term>Gonadotropin-Releasing Hormone</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Brain Chemistry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Amino Acid Sequence</term><term>Animals</term><term>Antibody Specificity</term><term>Chickens</term><term>Immunohistochemistry</term><term>Mammals</term><term>Molecular Sequence Data</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The brain of the sturgeon has recently been shown to contain at least two forms of GnRH (gonadotropin‐releasing hormone), mammalian GnRH (mGnRH) and chicken GnRH‐II (cGnRH‐II). In this study, we compared the distribution of immunoreactive (ir) mGnRH and cGnRH‐II in the brain of immature Siberian sturgeons (Acipenser baeri). The overall distribution of mGnRH was very similar to the distribution of sGnRH in teleosts such as salmonids or cyprinids. mGnRH‐ir perikarya were observed in the olfactory nerves and bulbs, the telencephalon, the preoptic region, and the mediobasal hypothalamus. All these cell bodies are located along a continuum of ir‐fibers that could be traced from the olfactory nerve to the nerve to the hypothalamopituitary interface. No ir‐fibers were observed in the anterior lobe of the pituitary, but a few were seen to enter the neurointermediate lobe. mGnRH‐ir fibers were detected in many parts of the brain, particularly in the forebrain. mGnRH‐ir cerebrospinal fluid‐containing cells were observed in the telencephalon, the preoptic region, and the mediobasal hypothalamus. In contrast, cGnRH‐II was present mainly in the posterior brain, although a few ir axons were seen in the above‐mentioned territories. In particular, cGnRH‐II‐ir cell bodies, negative for mGnRH, were consistently observed in the nucleus of the medial longitudinal fasciculus of the midbrain tegmentum. The cGnRH‐II innervation in the optic tectum, cerebellum, vagal lobe, and medulla oblongata was more abundant than the mGnRH innervation in the same areas. This study provides evidence that the organization of the GnRH systems in a primitive bony fish is, highly similar to that reported in teleosts and further documents the differential distribution of two forms of GnRH in the brain of vertebrates. © 1993 Wiley‐Liss,Inc.</div></front></TEI></ISTEX></double></record>Pour manipuler ce document sous Unix (Dilib)
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