The testicular capsule and peritubular tissue of birds : morphometry, histology, ultrastructure and immunohistochemistry

dc.contributor.authorAire, Tom A.
dc.contributor.authorOzegbe, P.C.
dc.date.accessioned2007-06-12T07:57:42Z
dc.date.available2007-06-12T07:57:42Z
dc.date.issued2007-06
dc.description.abstractThe testicular capsule was studied histologically, morphometrically, ultrastructurally and immunohistochemically in the Japanese quail, domestic fowl, turkey and duck (all members of the Galloanserae). The testicular capsule was, relative to mammals, thin, being 81.5 ± 13.7 µm in the quail, 91.7 ± 6.2 µm in the domestic fowl, 104.5 ± 29.8 µm in the turkey and 91.8 ± 18.9 µm in the duck. The orchido-epididymal border (hilus) of the capsule was much thicker than elsewhere in all birds (from 233.7 ± 50.7 µm in the duck to 550.0 ± 147.3 µm thick in the turkey). The testicular capsule, other than the tunica serosa and tunica vasculosa, comprised, in the main, smooth muscle-like or myoid cells running mainly in one direction, and disposed in one main mass. Peritubular tissue was similarly composed of smooth muscle-like cells disposed in several layers. Actin and desmin intermediate filaments were immunolocalized in the inner cellular layers of the capsule in the quail, domestic fowl and duck, but uniformly in the turkey. Vimentin intermediate filament immunoreaction in the capsule was moderately and uniformly positive in the testicular capsule of only the quail. Actin and desmin, but not vimentin (except very faintly in the turkey) or cytokeratin, were immunolocalized in the peritubular tissue of all birds. The results therefore establish, or complement, some previous observations that these birds have contractile cells in their testicular capsule and peritubular tissue, whose function probably includes the transport of testicular fluid into the excurrent duct system.en
dc.description.sponsorshipWe are grateful for a University of Pretoria research grant that aided this work. P.C.O. is a recipient of the University of Pretoria Post-Doctoral Fellowship.en
dc.format.extent1349447 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationAire, TA, Ozegbe, PC 2007, ‘The testicular capsule and peritubular tissue of birds: morphometry, histology, ultrastructure and immunohistochemistry’, Journal of Anatomy, vol. 210, no. 6, pp. 731-740 [http://www.blackwell-synergy.com]en
dc.identifier.issn1469-7580
dc.identifier.other10.1111/j.1469-7580.2007.00726.x
dc.identifier.urihttp://hdl.handle.net/2263/2707
dc.language.isoenen
dc.publisherBlackwellen
dc.rightsBlackwellen
dc.subjectThicknessen
dc.subjectTesticular capsuleen
dc.subjectBirdsen
dc.subjectImmunohistochemistryen
dc.subjectPeritubular tissueen
dc.subjectStructureen
dc.subject.lcshBirds -- Anatomyen
dc.titleThe testicular capsule and peritubular tissue of birds : morphometry, histology, ultrastructure and immunohistochemistryen
dc.typePostprint Articleen

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