The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules
Identifieur interne : 001382 ( Istex/Corpus ); précédent : 001381; suivant : 001383The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules
Auteurs : Bernhard Kluge ; Albrecht FischerSource :
- Cell and Tissue Research [ 0302-766X ] ; 1991-01-01.
Abstract
Summary: The renal tubules of the paired pronephros in early larvae (ammocoetes) of two lamprey species, Lampetra fluviatilis and Petromyzon marinus, were studied by use of light-, scanning- and transmission electron microscopy. They consist of (1) a variable number of pronephric tubules (3 to 6), and (2) an excretory duct. By fine-structural criteria, the renal tubules can be divided into 6 segments. Each pronephric tubule is divided into (1) the nephrostome and (2) the proximal tubule, the excretory duct consisting of (3) a common proximal tubule followed by (4) a short intermediate segment, and then by a pronephric duct composed of (5) a cranial and (6) a caudal section. The epithelium of the nephrostome displays bundles of cilia. The cells of the proximal tubule possess a brush border, many endocytotic organelles and a system of canaliculi (tubular invaginations of the basolateral plasmalemma). The same characteristics are encountered in the epithelium of the common proximal tubule; however, the number of these specific organelles decreases along the course of this segment in a posterior direction. In the intermediate segment, the epithelium appears structurally nonspecialized. The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. However, only the nephrostomes and proximal tubules occur serially in the pronephros, while the common proximal tubule, the intermediate segment and the cranial pronephric duct form portions of a single excretory duct.
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DOI: 10.1007/BF00327284
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They consist of (1) a variable number of pronephric tubules (3 to 6), and (2) an excretory duct. By fine-structural criteria, the renal tubules can be divided into 6 segments. Each pronephric tubule is divided into (1) the nephrostome and (2) the proximal tubule, the excretory duct consisting of (3) a common proximal tubule followed by (4) a short intermediate segment, and then by a pronephric duct composed of (5) a cranial and (6) a caudal section. The epithelium of the nephrostome displays bundles of cilia. The cells of the proximal tubule possess a brush border, many endocytotic organelles and a system of canaliculi (tubular invaginations of the basolateral plasmalemma). The same characteristics are encountered in the epithelium of the common proximal tubule; however, the number of these specific organelles decreases along the course of this segment in a posterior direction. In the intermediate segment, the epithelium appears structurally nonspecialized. The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. However, only the nephrostomes and proximal tubules occur serially in the pronephros, while the common proximal tubule, the intermediate segment and the cranial pronephric duct form portions of a single excretory duct.</div></front></TEI><istex><corpusName>springer</corpusName><author><json:item><name>Bernhard Kluge</name><affiliations><json:string>Institut für Zoologie der Universität, Saarstrasse 21, W-6500, Mainz, Germany</json:string></affiliations></json:item><json:item><name>Albrecht Fischer</name><affiliations><json:string>Institut für Zoologie der Universität, Saarstrasse 21, W-6500, Mainz, Germany</json:string></affiliations></json:item></author><articleId><json:string>BF00327284</json:string><json:string>Art11</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>OriginalPaper</json:string></originalGenre><abstract>Summary: The renal tubules of the paired pronephros in early larvae (ammocoetes) of two lamprey species, Lampetra fluviatilis and Petromyzon marinus, were studied by use of light-, scanning- and transmission electron microscopy. They consist of (1) a variable number of pronephric tubules (3 to 6), and (2) an excretory duct. By fine-structural criteria, the renal tubules can be divided into 6 segments. Each pronephric tubule is divided into (1) the nephrostome and (2) the proximal tubule, the excretory duct consisting of (3) a common proximal tubule followed by (4) a short intermediate segment, and then by a pronephric duct composed of (5) a cranial and (6) a caudal section. The epithelium of the nephrostome displays bundles of cilia. The cells of the proximal tubule possess a brush border, many endocytotic organelles and a system of canaliculi (tubular invaginations of the basolateral plasmalemma). The same characteristics are encountered in the epithelium of the common proximal tubule; however, the number of these specific organelles decreases along the course of this segment in a posterior direction. In the intermediate segment, the epithelium appears structurally nonspecialized. The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. 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The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. 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Research</JournalTitle><JournalAbbreviatedTitle>Cell Tissue Res</JournalAbbreviatedTitle><JournalSubjectGroup><JournalSubject Type="Primary">Biomedicine</JournalSubject><JournalSubject Type="Secondary">Neurosciences</JournalSubject><JournalSubject Type="Secondary">Endocrinology</JournalSubject><JournalSubject Type="Secondary">Neurology</JournalSubject><JournalSubject Type="Secondary">Cell Biology</JournalSubject></JournalSubjectGroup></JournalInfo><Volume><VolumeInfo VolumeType="Regular" TocLevels="0"><VolumeIDStart>263</VolumeIDStart><VolumeIDEnd>263</VolumeIDEnd><VolumeIssueCount>3</VolumeIssueCount></VolumeInfo><Issue IssueType="Regular"><IssueInfo TocLevels="0"><IssueIDStart>3</IssueIDStart><IssueIDEnd>3</IssueIDEnd><IssueArticleCount>22</IssueArticleCount><IssueHistory><CoverDate><DateString>1991</DateString><Year>1991</Year><Month>1</Month></CoverDate></IssueHistory><IssueCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>1991</CopyrightYear></IssueCopyright></IssueInfo><Article ID="Art11"><ArticleInfo Language="En" ArticleType="OriginalPaper" NumberingStyle="Unnumbered" TocLevels="0" ContainsESM="No"><ArticleID>BF00327284</ArticleID><ArticleDOI>10.1007/BF00327284</ArticleDOI><ArticleSequenceNumber>11</ArticleSequenceNumber><ArticleTitle Language="En">The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules</ArticleTitle><ArticleFirstPage>515</ArticleFirstPage><ArticleLastPage>528</ArticleLastPage><ArticleHistory><RegistrationDate><Year>2004</Year><Month>8</Month><Day>27</Day></RegistrationDate><Accepted><Year>1990</Year><Month>10</Month><Day>17</Day></Accepted></ArticleHistory><ArticleCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>1991</CopyrightYear></ArticleCopyright><ArticleGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ArticleGrants><ArticleContext><JournalID>441</JournalID><VolumeIDStart>263</VolumeIDStart><VolumeIDEnd>263</VolumeIDEnd><IssueIDStart>3</IssueIDStart><IssueIDEnd>3</IssueIDEnd></ArticleContext></ArticleInfo><ArticleHeader><AuthorGroup><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Bernhard</GivenName><FamilyName>Kluge</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Albrecht</GivenName><FamilyName>Fischer</FamilyName></AuthorName></Author><Affiliation ID="Aff1"><OrgName>Institut für Zoologie der Universität</OrgName><OrgAddress><Street>Saarstrasse 21</Street><Postcode>W-6500</Postcode><City>Mainz</City><Country>Germany</Country></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En"><Heading>Summary</Heading><Para>The renal tubules of the paired pronephros in early larvae (ammocoetes) of two lamprey species, <Emphasis Type="Italic">Lampetra fluviatilis</Emphasis> and <Emphasis Type="Italic">Petromyzon marinus</Emphasis>, were studied by use of light-, scanning- and transmission electron microscopy. They consist of (1) a variable number of pronephric tubules (3 to 6), and (2) an excretory duct. By fine-structural criteria, the renal tubules can be divided into 6 segments. Each pronephric tubule is divided into (1) the nephrostome and (2) the proximal tubule, the excretory duct consisting of (3) a common proximal tubule followed by (4) a short intermediate segment, and then by a pronephric duct composed of (5) a cranial and (6) a caudal section. The epithelium of the nephrostome displays bundles of cilia. The cells of the proximal tubule possess a brush border, many endocytotic organelles and a system of canaliculi (tubular invaginations of the basolateral plasmalemma). The same characteristics are encountered in the epithelium of the common proximal tubule; however, the number of these specific organelles decreases along the course of this segment in a posterior direction. In the intermediate segment, the epithelium appears structurally nonspecialized. The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. However, only the nephrostomes and proximal tubules occur serially in the pronephros, while the common proximal tubule, the intermediate segment and the cranial pronephric duct form portions of a single excretory duct.</Para></Abstract><KeywordGroup Language="En"><Heading>Key words</Heading><Keyword>Kidney</Keyword><Keyword>Pronephros</Keyword><Keyword>Fine structure</Keyword><Keyword>Lamprey, ammocoete: <Emphasis Type="Italic">Lampetra fluviatilis, Petromyzon marinus</Emphasis> (Cyclostomata)</Keyword></KeywordGroup><ArticleNote Type="Dedication"><SimplePara>This paper is dedicated to the memory of Professor W. Bargmann, long-time editor of <Emphasis Type="Italic">Cell and Tissue Research</Emphasis>, the author of a splendid review on the structure of the vertebrate kidney and a master of German scientific writing.</SimplePara></ArticleNote></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules</title></titleInfo><name type="personal"><namePart type="given">Bernhard</namePart><namePart type="family">Kluge</namePart><affiliation>Institut für Zoologie der Universität, Saarstrasse 21, W-6500, 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>Institut für Zoologie der Universität, Saarstrasse 21, W-6500, Mainz, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="OriginalPaper"></genre><originInfo><publisher>Springer-Verlag</publisher><place><placeTerm type="text">Berlin/Heidelberg</placeTerm></place><dateIssued encoding="w3cdtf">1991-01-01</dateIssued><copyrightDate encoding="w3cdtf">1991</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Summary: The renal tubules of the paired pronephros in early larvae (ammocoetes) of two lamprey species, Lampetra fluviatilis and Petromyzon marinus, were studied by use of light-, scanning- and transmission electron microscopy. They consist of (1) a variable number of pronephric tubules (3 to 6), and (2) an excretory duct. By fine-structural criteria, the renal tubules can be divided into 6 segments. Each pronephric tubule is divided into (1) the nephrostome and (2) the proximal tubule, the excretory duct consisting of (3) a common proximal tubule followed by (4) a short intermediate segment, and then by a pronephric duct composed of (5) a cranial and (6) a caudal section. The epithelium of the nephrostome displays bundles of cilia. The cells of the proximal tubule possess a brush border, many endocytotic organelles and a system of canaliculi (tubular invaginations of the basolateral plasmalemma). The same characteristics are encountered in the epithelium of the common proximal tubule; however, the number of these specific organelles decreases along the course of this segment in a posterior direction. In the intermediate segment, the epithelium appears structurally nonspecialized. The cells of the cranial pronephric duct lack a brush border; they have an extensive system of canaliculi and numerous mitochondria. The caudal pronephric duct is lined by an epithelium composed of light and dark cells; the latter are filled with mitochondria and the former contain mucus granules beneath the luminal plasmalemma. The tubular segments found in the pronephros are the same in structure and sequence as in the lamprey opisthonephroi. However, only the nephrostomes and proximal tubules occur serially in the pronephros, while the common proximal tubule, the intermediate segment and the cranial pronephric duct form portions of a single excretory duct.</abstract><relatedItem type="host"><titleInfo><title>Cell and Tissue Research</title></titleInfo><titleInfo type="abbreviated"><title>Cell Tissue Res</title></titleInfo><genre type="journal" displayLabel="Archive Journal"></genre><originInfo><dateIssued encoding="w3cdtf">1991-01-01</dateIssued><copyrightDate encoding="w3cdtf">1991</copyrightDate></originInfo><subject><genre>Biomedicine</genre><topic>Neurosciences</topic><topic>Endocrinology</topic><topic>Neurology</topic><topic>Cell Biology</topic></subject><identifier type="ISSN">0302-766X</identifier><identifier type="eISSN">1432-0878</identifier><identifier type="JournalID">441</identifier><identifier type="IssueArticleCount">22</identifier><identifier type="VolumeIssueCount">3</identifier><part><date>1991</date><detail type="volume"><number>263</number><caption>vol.</caption></detail><detail type="issue"><number>3</number><caption>no.</caption></detail><extent unit="pages"><start>515</start><end>528</end></extent></part><recordInfo><recordOrigin>Springer-Verlag, 1991</recordOrigin></recordInfo></relatedItem><identifier type="istex">81AE9EFC3F91F996B36C4F05F328A03A9C91E084</identifier><identifier type="DOI">10.1007/BF00327284</identifier><identifier type="ArticleID">BF00327284</identifier><identifier type="ArticleID">Art11</identifier><accessCondition type="use and reproduction" contentType="copyright">Springer-Verlag, 1991</accessCondition><recordInfo><recordContentSource>SPRINGER</recordContentSource><recordOrigin>Springer-Verlag, 1991</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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|type= RBID
|clé= ISTEX:81AE9EFC3F91F996B36C4F05F328A03A9C91E084
|texte= The pronephros of the early ammocoete larva of lampreys (Cyclostomata, Petromyzontes): Fine structure of the renal tubules
}}
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