Re-regeneration of lower jaws and the dental lamina in adult urodeles

Journal of Morphology
H T Graver

Abstract

Transverse amputations were carried out through one-third fully regenerated jaw segments and through normal tissue of the mandible on the same and opposite sides of the jaw in adults of Notophthalmus viridescens. Collectively the results suggest that, in adult urodeles, the mandible and the dental lamina can be replaced in an identical manner more than one time. Although the major histological events are the same in jaw regeneration and re-regeneration, regrowth is more rapid in re-regeneration. It appears that recently differentiated tissues of the regenerate have a higher capacity for regeneration than normal tissues amputated for the first time. Re-regeneration of the jaw occurs by growth of the original regenerate cartilage which has undergone reorganization. In re-regeneration, the skeletal elements exhibit no polarity and regrowth occurs in both directions, while the dental lamina possesses an anterior-posterior polarity and can regrow in an anterior direction only. Information concerning the mechanisms involved in the regenerative events remain to be determined.

References

May 1, 1976·The Journal of Experimental Zoology·G E Dearlove, M H Dresden
Jul 1, 1974·The Journal of Experimental Zoology·H T Graver
Jul 1, 1971·Journal of Morphology·R LawsonN T Beck
Jan 1, 1971·Zeitschrift für Zellforschung und mikroskopische Anatomie·M M Smith, A E Miles
Jun 1, 1962·The Journal of Experimental Zoology·C S THORNTON
Mar 1, 1951·Proceedings of the Society for Experimental Biology and Medicine·M SINGER
Oct 1, 1946·Biological Reviews of the Cambridge Philosophical Society·L W POLEZHAYEV

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Citations

Feb 23, 2007·Biological Reviews of the Cambridge Philosophical Society·Tiphaine Davit-BéalJean-Yves Sire
Jan 22, 2009·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Moya M SmithThimios A Mitsiadis
Oct 1, 1988·Ecotoxicology and Environmental Safety·T ZavanellaE Arias
Jul 10, 2007·Journal of Biomedical Materials Research. Part a·Rung-Shu ChenTai-Horng Young
Nov 22, 2016·BoneKEy Reports·Sandeep Paul, J Gage Crump

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