La remodelación ósea durante la reparación alveolar se ve afectada por el antagonista de RANKL

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i1.11975

Palabras clave:

Osteoporosis; Remodelación ósea; Densidad osea; Alvéolo dental; Denosumab.

Resumen

La osteoporosis posmenopáusica es perjudicial para el metabolismo óseo y la reparación alveolar. Este trastorno osteometabólico es un obstáculo para el éxito de las rehabilitaciones maxilofaciales, ya que un gran número de pacientes son portadores de la enfermedad. El denosumab se usa ampliamente como tratamiento para la osteoporosis posmenopáusica. Este fármaco ejerce una acción antiabsorbente al inhibir RANKL, ayudando a reducir la pérdida ósea provocada por la osteoporosis. Este estudio tuvo como objetivo evaluar el hueso de reparación formado tras la extracción del incisivo superior de ratas deficientes en estrógenos tratadas con anticuerpo monoclonal anti-RANKL. Las ratas (Rattus novergicus albinus, Wistar) fueron ovariectomizadas u operadas con SHAM (n = 36). La mitad de las ratas ovariectomizadas fueron tratadas con osteoprotegerina con un fragmento Fc (OPG-Fc; 10 mg / kg, dos veces por semana), la otra mitad recibió solución salina como control. Después de 30 días, se extrajo el incisivo superior derecho de las ratas. Después de 60 días de extracción, los alvéolos fueron evaluados por inmunohistoquímica, microtomografía computarizada y microscopía confocal. La OPG-Fc disminuyó el porcentaje de volumen óseo (BV / TV), grosor (Tb.Th) y número de trabéculas alveolares (Tb.N) en comparación con los grupos que recibieron solución salina (p <0,005). La OPG-Fc aumentó la separación entre las trabéculas (Tb.Sp) y la porosidad (Po.tot) del hueso alveolar reparador (p <0,005). El OPG-Fc disminuyó el inmunomarcaje de RANKL y TRAP en comparación con los grupos que recibieron solución salina. El tratamiento con OPG-Fc disminuyó la neoformación ósea pero conservó el tejido óseo preexistente. Estos datos están respaldados por la tasa de aposición de minerales, que mostró valores más altos para OVX / OPG-Fc en comparación con el grupo OVX.

Citas

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Publicado

24/01/2021

Cómo citar

SILVA, A. C. E. da .; BATISTA, F. R. de S. .; MOURA, J. de .; COLÉTE, J. Z. .; CHIBA, F. .; GOMES-FERREIRA, P. H. S. .; OKAMOTO, R. . La remodelación ósea durante la reparación alveolar se ve afectada por el antagonista de RANKL. Research, Society and Development, [S. l.], v. 10, n. 1, p. e43710111975, 2021. DOI: 10.33448/rsd-v10i1.11975. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/11975. Acesso em: 23 nov. 2024.

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Ciencias de la salud