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An immunohistochemical study of collagen types III, VI and IX in rabbit craniomandibular joint tissues following surgical induction of anterior disk displacement
Author(s) -
Ali Ayman M.,
Sharawy Mohamed M.
Publication year - 1996
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/j.1600-0714.1996.tb00197.x
Subject(s) - immunohistochemistry , anatomy , displacement (psychology) , rabbit (cipher) , lagomorpha , joint (building) , pathology , chemistry , medicine , psychology , mathematics , architectural engineering , statistics , engineering , psychotherapist
The purpose of this study was to determine the effect of surgical induction of anterior disk displacement (ADD) on type‐Ill. VI and IX collagens of the rabbit craniomandibular joint (CMJ) tissues using an immunohistochemical technique. The right joint was exposed surgically, all discal attachments were severed except for the posterior discal attachment (bilaminar zone). The disk was then repositioned anteriorly and sutured to the zygomatic arch. The left joint served as a sham‐operated control. Ten additional joints were used as non‐operated controls. Deeply anesthetized rabbits were perfused with 2% buffered formalin 2 weeks (10 rabbits) or 6 weeks (10 rabbits) following surgery. The articular disk, bilaminar zone, mandibular condyle and articular eminence were excised. The last two were decalcified in EDTA. All tissues were then sectioned at 10 um in a cryostat. Sections were incubated with monoclonal antibodies directed against type‐Ill. VI or IX collagens. Following incubation in the appropriate FITC‐fabelled secondary antibodies, all sections were studied under the fluorescence microscope. The results showed a reduction in immunostaining for type‐VI and IX collagens in the condylar cartilage, disk and articular eminence at 2 weeks, followed by an increase in their immunostaining at 6 weeks and the appearance of a de novo type‐Ill collagen in the condylar cartilage and the articular eminence. It is concluded that surgical induction of ADD in the rabbit CMJ leads to alterations in its type‐III. VI and IX collagens.