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Article: The ultrastructural and biosynthetic characteristics of steroidogenic cells in the gonad of Monopterus albus (Teleostei) during natural sex reversal

TitleThe ultrastructural and biosynthetic characteristics of steroidogenic cells in the gonad of Monopterus albus (Teleostei) during natural sex reversal
Authors
Issue Date1985
PublisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00441/index.htm
Citation
Cell And Tissue Research, 1985, v. 239 n. 2, p. 383-394 How to Cite?
AbstractThe ulstrastructural and biosynthetic characteristics of the steroid cells in the gonad of Monopterus albus have been studied. Ultrastructural features related to steroidogenesis have been identified in the interstitial Leydig cells, Sertoli cells, granulosa cells and thecal cells, and are especially abundant in the Leydig cells during the mid-intersexual phase. Steroidogenic ultrastructures in the Sertoli cells develop only during the maturation of the spermatogenic cysts, whereas in the granulosa and thecal cells, these features became obvious only during the maturation of the large oocytes. EM evidence also suggests a nutritive function for the Sertoli cells and the granulosa cells. Results of in vitro steroidogenic studies, using either testosterone or progesterone as a precursor, show a predominant conversion to androstenedione and 5α-reduced compounds, and suggest a change in biosynthesis from 5α-reduced products to androstenedione during sex reversal. 11-Ketotestosterone (11KT) has been identified, but not 11β-hydroxytestosterone. Production of 11KT is high in the late intersexual and the male phases, but a lack of a marked variation in 11KT production between the early and the mid-intersexual phase suggests that this steroid is not a trigger for natural sex reversal in Monopterus.
Persistent Identifierhttp://hdl.handle.net/10722/173091
ISSN
2015 Impact Factor: 2.948
2015 SCImago Journal Rankings: 1.539
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYeung, WSBen_US
dc.contributor.authorAdal, MNen_US
dc.contributor.authorHui, SWBen_US
dc.contributor.authorChan, STHen_US
dc.date.accessioned2012-10-30T06:27:54Z-
dc.date.available2012-10-30T06:27:54Z-
dc.date.issued1985en_US
dc.identifier.citationCell And Tissue Research, 1985, v. 239 n. 2, p. 383-394en_US
dc.identifier.issn0302-766Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/173091-
dc.description.abstractThe ulstrastructural and biosynthetic characteristics of the steroid cells in the gonad of Monopterus albus have been studied. Ultrastructural features related to steroidogenesis have been identified in the interstitial Leydig cells, Sertoli cells, granulosa cells and thecal cells, and are especially abundant in the Leydig cells during the mid-intersexual phase. Steroidogenic ultrastructures in the Sertoli cells develop only during the maturation of the spermatogenic cysts, whereas in the granulosa and thecal cells, these features became obvious only during the maturation of the large oocytes. EM evidence also suggests a nutritive function for the Sertoli cells and the granulosa cells. Results of in vitro steroidogenic studies, using either testosterone or progesterone as a precursor, show a predominant conversion to androstenedione and 5α-reduced compounds, and suggest a change in biosynthesis from 5α-reduced products to androstenedione during sex reversal. 11-Ketotestosterone (11KT) has been identified, but not 11β-hydroxytestosterone. Production of 11KT is high in the late intersexual and the male phases, but a lack of a marked variation in 11KT production between the early and the mid-intersexual phase suggests that this steroid is not a trigger for natural sex reversal in Monopterus.en_US
dc.languageengen_US
dc.publisherSpringer Verlag. The Journal's web site is located at http://link.springer.de/link/service/journals/00441/index.htmen_US
dc.relation.ispartofCell and Tissue Researchen_US
dc.subject.meshAndrogens - Biosynthesisen_US
dc.subject.meshAnimalsen_US
dc.subject.meshFemaleen_US
dc.subject.meshFishes - Anatomy & Histology - Physiologyen_US
dc.subject.meshGonads - Metabolism - Ultrastructureen_US
dc.subject.meshGranulosa Cells - Ultrastructureen_US
dc.subject.meshLeydig Cells - Ultrastructureen_US
dc.subject.meshMaleen_US
dc.subject.meshProgesterone - Metabolismen_US
dc.subject.meshSertoli Cells - Ultrastructureen_US
dc.subject.meshSex Differentiation - Drug Effectsen_US
dc.subject.meshTestosterone - Metabolismen_US
dc.subject.meshTheca Cells - Ultrastructureen_US
dc.titleThe ultrastructural and biosynthetic characteristics of steroidogenic cells in the gonad of Monopterus albus (Teleostei) during natural sex reversalen_US
dc.typeArticleen_US
dc.identifier.emailYeung, WSB:wsbyeung@hkucc.hku.hken_US
dc.identifier.authorityYeung, WSB=rp00331en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid3978697-
dc.identifier.scopuseid_2-s2.0-0021945632en_US
dc.identifier.volume239en_US
dc.identifier.issue2en_US
dc.identifier.spage383en_US
dc.identifier.epage394en_US
dc.identifier.isiWOS:A1985AHJ8400017-
dc.publisher.placeGermanyen_US
dc.identifier.scopusauthoridYeung, WSB=7102370745en_US
dc.identifier.scopusauthoridAdal, MN=6603263425en_US
dc.identifier.scopusauthoridHui, SWB=16463254400en_US
dc.identifier.scopusauthoridChan, STH=24368283200en_US

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