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TRAIL, DR5 and caspase 3-dependent apoptosis in vessels of diseased human temporomandibular joint disc. An immunohistochemical study

C. Loreto, L. E. Almeida, M.R. Migliore, M. Caltabiano, R. Leonardi
  • L. E. Almeida
    Center for Health and Biological Sciences, Pontifical Catholic University of Paraná, Curitiba, Brazil
  • M.R. Migliore
    Department of Medical and Surgical Sciences, 2nd Dental Unit, University of Catania, Italy
  • M. Caltabiano
    Affiliation not present
  • R. Leonardi
    Department of Medical and Surgical Sciences, 2nd Dental Unit, University of Catania, Italy

Abstract

To evaluate the apoptosis involvement in the angiogenesis as a self-limiting process in patients with temporomandibular joint (TMJ) degenerated disc vessels, we assessed, by immunohistochemistry, the detection of TRAIL, its death receptor DR5 and caspase 3. TRAIL, its death receptor DR5 and caspase 3 expression were studied by immunohistochemistry in 15 TMJ discs displaced without reduction and in 4 unaffected discs. These apoptosis molecules were detected in the intima and media layers of newly formed vessels affected discs. In conclusion, vessels apoptosis activation in TMJ disc with ID could be regarded as a self-limiting process that try to leads to vessel regression; in this way an inhibition of angiogenic vessels may prove a key strategy in limiting pathological angiogenesis, by cutting off blood supply to tumors, or by reducing harmful inflammation.

Keywords

TMJ disc, vessels, apoptosis

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Submitted: 2010-06-21 13:42:29
Published: 2010-09-13 14:58:02
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Copyright (c) 2010 C. Loreto, L. E. Almeida, M.R. Migliore, M. Caltabiano, R. Leonardi

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