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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<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>
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<keywords scheme="MESH" type="chemical" qualifier="immunology" xml:lang="en"><term>Gonadotropin-Releasing Hormone</term>
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<term>Molecular Sequence Data</term>
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<term>Encéphale</term>
<term>Etude comparative</term>
<term>Gonadotrophine RH</term>
<term>Mammalia</term>
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<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>
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<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>
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<seriesStmt><title level="j" type="main">Journal of comparative neurology : (1911)</title>
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<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>
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<term>Acipenser baeri</term>
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<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>
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<region type="region" nuts="2">Nouvelle-Aquitaine</region>
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<author><name sortKey="Vandesande, Frans" sort="Vandesande, Frans" uniqKey="Vandesande F" first="Frans" last="Vandesande">Frans Vandesande</name>
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<author><name sortKey="Anglade, Isabelle" sort="Anglade, Isabelle" uniqKey="Anglade I" first="Isabelle" last="Anglade">Isabelle Anglade</name>
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<author><name sortKey="Williot, Patrick" sort="Williot, Patrick" uniqKey="Williot P" first="Patrick" last="Williot">Patrick Williot</name>
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<author><name sortKey="Vandesande, Frans" sort="Vandesande, Frans" uniqKey="Vandesande F" first="Frans" last="Vandesande">Frans Vandesande</name>
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<author><name sortKey="Tramu, Gerard" sort="Tramu, Gerard" uniqKey="Tramu G" first="Gérard" last="Tramu">Gérard Tramu</name>
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<series><title level="j">Journal of Comparative Neurology</title>
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<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>
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</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>
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<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>
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