Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)
Identifieur interne : 001343 ( Istex/Corpus ); précédent : 001342; suivant : 001344Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)
Auteurs : Emmanuel Leprêtre ; Isabelle Anglade ; Patrick Williot ; Frans Vandesande ; Gérard Tramu ; Gérard KahSource :
- Journal of Comparative Neurology [ 0021-9967 ] ; 1993-11-22.
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- KwdEn :
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.
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DOI: 10.1002/cne.903370404
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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>fish</term><term>immunocytochemistry</term><term>neuropeptide</term><term>pituitary</term><term>reproduction</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><corpusName>wiley</corpusName><author><json:item><name>Emmanuel Leprêtre</name><affiliations><json:string>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</json:string></affiliations></json:item><json:item><name>Isabelle Anglade</name><affiliations><json:string>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</json:string></affiliations></json:item><json:item><name>Patrick Williot</name><affiliations><json:string>CEMAGREF, BP 3, 33610 Cestas, France</json:string></affiliations></json:item><json:item><name>Frans Vandesande</name><affiliations><json:string>Laboratory of Neuroendocrinology, Zoological Institute, B‐3000 Leuven, Belgium</json:string></affiliations></json:item><json:item><name>Gérard Tramu</name><affiliations><json:string>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</json:string></affiliations></json:item><json:item><name>Dr. Kah</name><affiliations><json:string>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</json:string><json:string>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, Avenue des Facultés, 33405 Talence Cedex, France</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>neuropeptide</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>immunocytochemistry</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>pituitary</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>reproduction</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>fish</value></json:item></subject><articleId><json:string>CNE903370404</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><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.</abstract><qualityIndicators><score>8</score><pdfVersion>1.3</pdfVersion><pdfPageSize>594 x 792 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1828</abstractCharCount><pdfWordCount>7107</pdfWordCount><pdfCharCount>45063</pdfCharCount><pdfPageCount>16</pdfPageCount><abstractWordCount>275</abstractWordCount></qualityIndicators><title>Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)</title><genre><json:string>article</json:string></genre><host><volume>337</volume><publisherId><json:string>CNE</json:string></publisherId><pages><total>16</total><last>583</last><first>568</first></pages><issn><json:string>0021-9967</json:string></issn><issue>4</issue><subject><json:item><value>Article</value></json:item></subject><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1096-9861</json:string></eissn><title>Journal of Comparative Neurology</title><doi><json:string>10.1002/(ISSN)1096-9861</json:string></doi></host><categories><wos><json:string>science</json:string><json:string>zoology</json:string><json:string>neurosciences</json:string></wos><scienceMetrix><json:string>health sciences</json:string><json:string>clinical medicine</json:string><json:string>neurology & neurosurgery</json:string></scienceMetrix></categories><publicationDate>1993</publicationDate><copyrightDate>1993</copyrightDate><doi><json:string>10.1002/cne.903370404</json:string></doi><id>2A8BD93F7FC3C24C6759E25AC017E90950807B4D</id><score>0.061659068</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/2A8BD93F7FC3C24C6759E25AC017E90950807B4D/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/2A8BD93F7FC3C24C6759E25AC017E90950807B4D/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/2A8BD93F7FC3C24C6759E25AC017E90950807B4D/fulltext/tei"><teiHeader><fileDesc><titleStmt><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></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><availability><p>Copyright © 1993 Wiley‐Liss, Inc.</p></availability><date>1993</date></publicationStmt><sourceDesc><biblStruct type="inbook"><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 xml:id="author-1"><persName><forename type="first">Emmanuel</forename><surname>Leprêtre</surname></persName><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation></author><author xml:id="author-2"><persName><forename type="first">Isabelle</forename><surname>Anglade</surname></persName><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation></author><author xml:id="author-3"><persName><forename type="first">Patrick</forename><surname>Williot</surname></persName><affiliation>CEMAGREF, BP 3, 33610 Cestas, France</affiliation></author><author xml:id="author-4"><persName><forename type="first">Frans</forename><surname>Vandesande</surname></persName><affiliation>Laboratory of Neuroendocrinology, Zoological Institute, B‐3000 Leuven, Belgium</affiliation></author><author xml:id="author-5"><persName><forename type="first">Gérard</forename><surname>Tramu</surname></persName><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation></author><author xml:id="author-6"><persName><surname>Kah</surname></persName><roleName type="degree">Dr.</roleName><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, Avenue des Facultés, 33405 Talence Cedex, France</affiliation></author></analytic><monogr><title level="j">Journal of Comparative Neurology</title><title level="j" type="abbrev">J. Comp. Neurol.</title><idno type="pISSN">0021-9967</idno><idno type="eISSN">1096-9861</idno><idno type="DOI">10.1002/(ISSN)1096-9861</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="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></monogr><idno type="istex">2A8BD93F7FC3C24C6759E25AC017E90950807B4D</idno><idno type="DOI">10.1002/cne.903370404</idno><idno type="ArticleID">CNE903370404</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1993</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>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.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>neuropeptide</term></item><item><term>immunocytochemistry</term></item><item><term>pituitary</term></item><item><term>reproduction</term></item><item><term>fish</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Article</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1993-06-25">Registration</change><change when="1993-11-22">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/2A8BD93F7FC3C24C6759E25AC017E90950807B4D/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Wiley Subscription Services, Inc., A Wiley Company</publisherName><publisherLoc>Hoboken</publisherLoc></publisherInfo><doi registered="yes">10.1002/(ISSN)1096-9861</doi><issn type="print">0021-9967</issn><issn type="electronic">1096-9861</issn><idGroup><id type="product" value="CNE"></id></idGroup><titleGroup><title type="main" xml:lang="en">Journal of Comparative Neurology</title><title type="short">J. 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Neurol.</title></titleGroup></publicationMeta><publicationMeta level="part" position="40"><doi origin="wiley" registered="yes">10.1002/cne.v337:4</doi><numberingGroup><numbering type="journalVolume" number="337">337</numbering><numbering type="journalIssue">4</numbering></numberingGroup><coverDate startDate="1993-11-22">22 November 1993</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="4" status="forIssue"><doi origin="wiley" registered="yes">10.1002/cne.903370404</doi><idGroup><id type="unit" value="CNE903370404"></id></idGroup><countGroup><count type="pageTotal" number="16"></count></countGroup><titleGroup><title type="articleCategory">Article</title><title type="tocHeading1">Articles</title></titleGroup><copyright ownership="publisher">Copyright © 1993 Wiley‐Liss, Inc.</copyright><eventGroup><event type="manuscriptAccepted" date="1993-06-25"></event><event type="firstOnline" date="2004-10-09"></event><event type="publishedOnlineFinalForm" date="2004-10-09"></event><event type="xmlConverted" agent="Converter:JWSART34_TO_WML3G version:2.3.2 mode:FullText source:HeaderRef result:HeaderRef" date="2010-03-01"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-15"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst">568</numbering><numbering type="pageLast">583</numbering></numberingGroup><correspondenceTo>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, Avenue des Facultés, 33405 Talence Cedex, France</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:CNE.CNE903370404.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="31"></count><count type="tableTotal" number="1"></count><count type="referenceTotal" number="47"></count></countGroup><titleGroup><title 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 (<i>Acipenser baeri</i>)</title><title type="short" xml:lang="en">MAMMALIAN GNRH AND CHIEKEN GNRH‐II</title></titleGroup><creators><creator xml:id="au1" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Emmanuel</givenNames><familyName>Leprêtre</familyName></personName></creator><creator xml:id="au2" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Isabelle</givenNames><familyName>Anglade</familyName></personName></creator><creator xml:id="au3" creatorRole="author" affiliationRef="#af2"><personName><givenNames>Patrick</givenNames><familyName>Williot</familyName></personName></creator><creator xml:id="au4" creatorRole="author" affiliationRef="#af3"><personName><givenNames>Frans</givenNames><familyName>Vandesande</familyName></personName></creator><creator xml:id="au5" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Gérard</givenNames><familyName>Tramu</familyName></personName></creator><creator xml:id="au6" creatorRole="author" affiliationRef="#af1" corresponding="yes"><personName><honorifics>Dr.</honorifics><givenNames>Olivier</givenNames><familyName>Kah</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="af1" countryCode="FR" type="organization"><unparsedAffiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</unparsedAffiliation></affiliation><affiliation xml:id="af2" countryCode="FR" type="organization"><unparsedAffiliation>CEMAGREF, BP 3, 33610 Cestas, France</unparsedAffiliation></affiliation><affiliation xml:id="af3" countryCode="BE" type="organization"><unparsedAffiliation>Laboratory of Neuroendocrinology, Zoological Institute, B‐3000 Leuven, Belgium</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">neuropeptide</keyword><keyword xml:id="kwd2">immunocytochemistry</keyword><keyword xml:id="kwd3">pituitary</keyword><keyword xml:id="kwd4">reproduction</keyword><keyword xml:id="kwd5">fish</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>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 (<i>Acipenser baeri</i>). 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.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>MAMMALIAN GNRH AND CHIEKEN GNRH‐II</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Comparative distribution of mammalian GnRH (gonadotrophin‐releasing hormone) and chicken GnRH‐II in the brain of the immature siberian sturgeon (Acipenser baeri)</title></titleInfo><name type="personal"><namePart type="given">Emmanuel</namePart><namePart type="family">Leprêtre</namePart><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Isabelle</namePart><namePart type="family">Anglade</namePart><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Patrick</namePart><namePart type="family">Williot</namePart><affiliation>CEMAGREF, BP 3, 33610 Cestas, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Frans</namePart><namePart type="family">Vandesande</namePart><affiliation>Laboratory of Neuroendocrinology, Zoological Institute, B‐3000 Leuven, Belgium</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Gérard</namePart><namePart type="family">Tramu</namePart><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="termsOfAddress">Dr.</namePart><namePart type="family">Kah</namePart><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, 33405 Talence, France</affiliation><affiliation>Laboratoire de Neurocytochimie Fonctionnelle, URA 339 CNRS, Avenue des Facultés, 33405 Talence Cedex, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><place><placeTerm type="text">Hoboken</placeTerm></place><dateIssued encoding="w3cdtf">1993-11-22</dateIssued><dateValid encoding="w3cdtf">1993-06-25</dateValid><copyrightDate encoding="w3cdtf">1993</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">31</extent><extent unit="tables">1</extent><extent unit="references">47</extent></physicalDescription><abstract 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.</abstract><subject lang="en"><genre>keywords</genre><topic>neuropeptide</topic><topic>immunocytochemistry</topic><topic>pituitary</topic><topic>reproduction</topic><topic>fish</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Comparative Neurology</title></titleInfo><titleInfo type="abbreviated"><title>J. Comp. Neurol.</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Article</topic></subject><identifier type="ISSN">0021-9967</identifier><identifier type="eISSN">1096-9861</identifier><identifier type="DOI">10.1002/(ISSN)1096-9861</identifier><identifier type="PublisherID">CNE</identifier><part><date>1993</date><detail type="volume"><caption>vol.</caption><number>337</number></detail><detail type="issue"><caption>no.</caption><number>4</number></detail><extent unit="pages"><start>568</start><end>583</end><total>16</total></extent></part></relatedItem><identifier type="istex">2A8BD93F7FC3C24C6759E25AC017E90950807B4D</identifier><identifier type="DOI">10.1002/cne.903370404</identifier><identifier type="ArticleID">CNE903370404</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 1993 Wiley‐Liss, Inc.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Wiley Subscription Services, Inc., A Wiley Company</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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