Transforming Growth Factor-ß1 (TGF-ß1) immunoreactivity in heterotopic grafts of adult dental apical papilla.

  • Telmo José Mezadri Centro de Ciencias de la Salud. Universidad do Vale do Itajaí.
  • David Rivero Tames Centro de Ciencias de la Salud. Universidad do Vale do Itajaí.
  • Xana Raquel Ortolan Centro de Ciencias de la Salud. Universidad do Vale do Itajaí.
  • José Angel Armengol Departamento de Fisiología, Anatomía y Biología Celular. Universidad Pablo de Olavide

Abstract

Objective: To analyze the expression of transforming growth factor-ß1 in heterotopic grafts of adult dental apical papillae. Methodology: Adult apical papillae of Wistar rats were grafted in the ear of the same donor rats. 1, 3, 7 and 14 days after grafting, rats were perfused and the tissue containing the graft was processed for histological conventional technique and for immunohistochemical detection of transforming growth factor-ß1. Results: Heterotopically grafted apical papilla developed osteoid dentine. In an early post-grafting stage, odontoblast-like cells organized themselves in palisade and synthesized dentine. However, newly formed dentine possessed the structural appearance of reactive osteoid dentine, which was systematically destroyed by the activity of osteoclaste-like cells. Transforming Growth Factor-ß1 was observed in mesenchymal cells, extracellular matrix of the graft and surrounding host tissue, while odontoblast-like cells were systematically devoid of immunoreactivity. Conclusion: The different expression of transforming growth factor-ß1 between normal tissue and grafted tissue development suggests that in heterotopic graft conditions the inflammatory mediation of the transforming growth factor-ß1 prevails against its morphogenetic role.

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Published
2015-01-27
How to Cite
MEZADRI, Telmo José et al. Transforming Growth Factor-ß1 (TGF-ß1) immunoreactivity in heterotopic grafts of adult dental apical papilla.. Journal of Oral Research, [S.l.], v. 4, n. 1, p. 38-43, jan. 2015. ISSN 0719-2479. Available at: <https://www.joralres.com/index.php/JOralRes/article/view/joralres.2015.009>. Date accessed: 28 apr. 2024. doi: https://doi.org/10.17126/joralres.2015.009.
Section
Articles

Keywords

odontoblast, apical papilla,TGF-ß1, graft.