Vitellogenin from female and estradiol‐stimulated male river lampreys (Lampetra fluviatilis L.)
Identifieur interne : 000F19 ( Istex/Corpus ); précédent : 000F18; suivant : 000F20Vitellogenin from female and estradiol‐stimulated male river lampreys (Lampetra fluviatilis L.)
Auteurs : Karsten Rüdiger Mewes ; Martin Latz ; Holger Golla ; Albrecht FischerSource :
- Journal of Experimental Zoology [ 0022-104X ] ; 2002-01-01.
Abstract
The influence of estradiol‐17β (E2) on vitellogenesis is well documented for a number of oviparous craniates. We have examined the role that estradiol‐17β plays in the induction and regulation of vitellogenin synthesis in the maturing European river lamprey, Lampetra fluviatilis. In both females and males the estradiol‐17β concentrations in the plasma reached comparable maximum values in March, only a few weeks before spawning. Throughout the spawning run, the vitellogenin titer in the blood of females remains rather constant while the ovary volume increases. In contrast, we never found circulating VTG in untreated male lampreys. The synthesis and secretion of the yolk precursor molecule can be induced in males, however, by high doses of estradiol injected into the coelom. Lamprey vitellogenin was isolated from the blood of maturing females as well as from hormone‐stimulated males and identified by its immunological and electrophoretic properties. In the blood plasma of both maturing female and estradiol‐treated male lampreys it always appears simultaneously in two different molecular forms: a vitellogenin monomer with an apparent molecular weight of 310–330�kDa and a dimer. After SDS treatment, vitellogenin is represented as a 212‐kDa polypeptide. J. Exp. Zool. 292:52–72, 2002. © 2002 Wiley‐Liss, Inc.
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DOI: 10.1002/jez.1142
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We have examined the role that estradiol‐17β plays in the induction and regulation of vitellogenin synthesis in the maturing European river lamprey, Lampetra fluviatilis. In both females and males the estradiol‐17β concentrations in the plasma reached comparable maximum values in March, only a few weeks before spawning. Throughout the spawning run, the vitellogenin titer in the blood of females remains rather constant while the ovary volume increases. In contrast, we never found circulating VTG in untreated male lampreys. The synthesis and secretion of the yolk precursor molecule can be induced in males, however, by high doses of estradiol injected into the coelom. Lamprey vitellogenin was isolated from the blood of maturing females as well as from hormone‐stimulated males and identified by its immunological and electrophoretic properties. In the blood plasma of both maturing female and estradiol‐treated male lampreys it always appears simultaneously in two different molecular forms: a vitellogenin monomer with an apparent molecular weight of 310–330�kDa and a dimer. After SDS treatment, vitellogenin is represented as a 212‐kDa polypeptide. J. Exp. 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We have examined the role that estradiol‐17β plays in the induction and regulation of vitellogenin synthesis in the maturing European river lamprey, Lampetra fluviatilis. In both females and males the estradiol‐17β concentrations in the plasma reached comparable maximum values in March, only a few weeks before spawning. Throughout the spawning run, the vitellogenin titer in the blood of females remains rather constant while the ovary volume increases. In contrast, we never found circulating VTG in untreated male lampreys. The synthesis and secretion of the yolk precursor molecule can be induced in males, however, by high doses of estradiol injected into the coelom. Lamprey vitellogenin was isolated from the blood of maturing females as well as from hormone‐stimulated males and identified by its immunological and electrophoretic properties. In the blood plasma of both maturing female and estradiol‐treated male lampreys it always appears simultaneously in two different molecular forms: a vitellogenin monomer with an apparent molecular weight of 310–330�kDa and a dimer. After SDS treatment, vitellogenin is represented as a 212‐kDa polypeptide. J. Exp. 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We have examined the role that estradiol‐17β plays in the induction and regulation of vitellogenin synthesis in the maturing European river lamprey, <i>Lampetra fluviatilis</i>. In both females and males the estradiol‐17β concentrations in the plasma reached comparable maximum values in March, only a few weeks before spawning. Throughout the spawning run, the vitellogenin titer in the blood of females remains rather constant while the ovary volume increases. In contrast, we never found circulating VTG in untreated male lampreys. The synthesis and secretion of the yolk precursor molecule can be induced in males, however, by high doses of estradiol injected into the coelom. Lamprey vitellogenin was isolated from the blood of maturing females as well as from hormone‐stimulated males and identified by its immunological and electrophoretic properties. In the blood plasma of both maturing female and estradiol‐treated male lampreys it always appears simultaneously in two different molecular forms: a vitellogenin monomer with an apparent molecular weight of 310–330�kDa and a dimer. After SDS treatment, vitellogenin is represented as a 212‐kDa polypeptide. <i>J. Exp. Zool. 292:52–72, 2002</i>. © 2002 Wiley‐Liss, Inc.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Vitellogenin from female and estradiol‐stimulated male river lampreys (Lampetra fluviatilis L.)</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Vitellogenin From River Lampreys</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Vitellogenin from female and estradiol‐stimulated male river lampreys (Lampetra fluviatilis L.)</title></titleInfo><name type="personal"><namePart type="given">Karsten Rüdiger</namePart><namePart type="family">Mewes</namePart><affiliation>Abteilung Experimentelle Morphologie, Institut für Zoologie, Universität Mainz, D‐55099 Mainz, Germany</affiliation><affiliation>c/o Prof. Dr. Albrecht Fischer, Experimentelle Morphologie, Institut für Zoologie, Johannes Gutenberg‐Universität Mainz, Becherweg 9, D‐55099 Mainz, Germany===</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Martin</namePart><namePart type="family">Latz</namePart><affiliation>Abteilung Experimentelle Morphologie, Institut für Zoologie, Universität Mainz, D‐55099 Mainz, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Holger</namePart><namePart type="family">Golla</namePart><affiliation>Abteilung Experimentelle Morphologie, Institut für Zoologie, Universität Mainz, D‐55099 Mainz, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Albrecht</namePart><namePart type="family">Fischer</namePart><affiliation>Abteilung Experimentelle Morphologie, Institut für Zoologie, Universität Mainz, D‐55099 Mainz, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>John Wiley & Sons, Inc.</publisher><place><placeTerm type="text">New York</placeTerm></place><dateIssued encoding="w3cdtf">2002-01-01</dateIssued><dateCaptured encoding="w3cdtf">2000-07-31</dateCaptured><dateValid encoding="w3cdtf">2001-08-09</dateValid><copyrightDate encoding="w3cdtf">2002</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">12</extent><extent unit="references">81</extent><extent unit="words">13279</extent></physicalDescription><abstract lang="en">The influence of estradiol‐17β (E2) on vitellogenesis is well documented for a number of oviparous craniates. We have examined the role that estradiol‐17β plays in the induction and regulation of vitellogenin synthesis in the maturing European river lamprey, Lampetra fluviatilis. In both females and males the estradiol‐17β concentrations in the plasma reached comparable maximum values in March, only a few weeks before spawning. Throughout the spawning run, the vitellogenin titer in the blood of females remains rather constant while the ovary volume increases. In contrast, we never found circulating VTG in untreated male lampreys. The synthesis and secretion of the yolk precursor molecule can be induced in males, however, by high doses of estradiol injected into the coelom. Lamprey vitellogenin was isolated from the blood of maturing females as well as from hormone‐stimulated males and identified by its immunological and electrophoretic properties. In the blood plasma of both maturing female and estradiol‐treated male lampreys it always appears simultaneously in two different molecular forms: a vitellogenin monomer with an apparent molecular weight of 310–330�kDa and a dimer. After SDS treatment, vitellogenin is represented as a 212‐kDa polypeptide. J. Exp. Zool. 292:52–72, 2002. © 2002 Wiley‐Liss, Inc.</abstract><relatedItem type="host"><titleInfo><title>Journal of Experimental Zoology</title></titleInfo><titleInfo type="abbreviated"><title>J. Exp. Zool.</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Endocrinology</topic></subject><identifier type="ISSN">0022-104X</identifier><identifier type="eISSN">1097-010X</identifier><identifier type="DOI">10.1002/(ISSN)1097-010X</identifier><identifier type="PublisherID">JEZ</identifier><part><date>2002</date><detail type="volume"><caption>vol.</caption><number>292</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>52</start><end>72</end><total>21</total></extent></part></relatedItem><identifier type="istex">8CF312C1BDBAB8C07AE898FADCFF9B0CA4BB48DB</identifier><identifier type="DOI">10.1002/jez.1142</identifier><identifier type="ArticleID">JEZ1142</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2002 Wiley‐Liss, Inc.</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>John Wiley & Sons, Inc.</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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