Resumen
Con el fin de tener una mayor comprensión sobre el comportamiento biológico del mixoma
odontogénico (MO), se realizó inmunohistoquímica en 31 muestras, utilizando marcadores
relacionados con mecanismos de progresión tumoral (adhesión, angiogénesis, apoptosis, inflamación
y proliferación celular). El epitelio odontogénico fue detectado en cuatro muestras
mediante CK19 y CD138, este último, mostró expresión baja en matriz extracelular (MEC) y
alta en las células tumorales. La microdensidad vascular (MDV) media fue de 7.51 y 5.35 vasos
marcados con CD34 y VEGF-A respectivamente. Una alta expresión de Orosomucoide-1
y Mast Cell Tryptase se observó células tumorales y en MEC. El MO mostró negatividad para
Calretinina. Este perfil inmunohistoquímico, la baja expresión para Ki-67, Bcl-2 y p53, y la
relativamente baja MDV, sugieren que la actividad proliferativa, anti-apoptótica o angiogénica
no representan los principales mecanismos de crecimiento del MO, los cuales podrían estar
asociados a eventos como inmunomodulación y degradación de la MEC.
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