Expression of proteins in the extracellular matrix of pulp tissue in human primary teeth during physiologic root resorption

Autor(es)

Boenecker, Marcelo ^[1] ; Mantesso, Andrea ; de Araujo, Ney Soares ^[1] ; Araujo, Vera Cavalcanti ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sch Dent, Sao Leopoldo Mandic Dent Res Inst, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Quintessence International; v. 40, n. 7, p. 553-558, JUL-AUG 2009.
• Citações Web of Science: 4

Resumo

Objectives: To analyze the expression of tenascin, fibronectin, collagens I and III, osteonectin, and bone morphogenetic protein 4 (BMP4) in the extracellular matrix of pulp tissue in primary teeth during physiologic root resorption. Method and Materials: Eighteen teeth were decalcified and equally distributed into 3 groups (group I, teeth with two-thirds root length; group II, teeth with one-third root length; and group III, teeth lacking the root). Results: Immunohistochemical analysis showed that all the proteins were expressed. Tenascin, collagen I, and osteonectin showed strong and broad reactivity in group I, with weaker and rare reactivity in groups II and III. The expression of fibronectin, collagen III, and BMP4 did not vary with root resorption phase. Conclusion: The expression of tenascin, collagen I, and osteonectin was reduced in the extracellular matrix and odontoblasts during root resorption. This fact may be related to the decreasing pulp response to damage and treatment during the progression of root resorption. (Quintessence Int 2009; 40: 553-558) (AU)

• Processo FAPESP: 01/13750-0 - Estudo de alteracoes de proteinas da matriz celular na polpa dentaria de dentes deciduos durante o processo de rizolise.
• Beneficiário: Marcelo Jose Strazzeri Bönecker
• Modalidade de apoio: Auxílio à Pesquisa - Regular