Matrix formation in craniofacial cartilages of the rat.: [35S]-Sulfate incorporation studies

Authors

  • Kjell Størksen Institute of Anatomy, University of Bergen, Bergen, Norway
  • Sverre Aukland Institute of Anatomy, University of Bergen, Bergen, Norway
  • Steinar Kvinnsland Institute of Anatomy, University of Bergen, Bergen, Norway

DOI:

https://doi.org/10.3109/00016357909004682

Keywords:

Craniofacial skeleton, cartilage growth, radioactive isotopes

Abstract

Various cartilaginous zones in the craniofacial region of rats were studied using radioactive sulfate incorporation. Chondroitinsulfate represents a major part of the cartilaginous matrix. By measuring the cpm/DNA ratio in the tissue samples, one will get an expression of the matrix formation activity of the zones investigated. An increase in the cpm/DNA ratio was found in all zones between the 14th and the 17th day. This increase corresponds with a period of great proliferative activity. Autoradiography of the mandibular condyle revealed no sulfate labelling centrally indicating that this structure grows purely by surface apposition.

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Published

1979-01-01

Issue

Vol. 37 No. 1 (1979): Acta Odontologica Scandinavica

Section

Articles