Publicado

2021-07-01

Diferencias fenotípicas de fibroblastos gingivales en sujetos con hiperplasia gingival idiopática frente a sujetos periodontalmente sanos: estudio piloto

Phenotypic differences of gingival fibroblasts in subjects with idiopathic gingival hyperplasia versus periodontally healthy subjects: a pilot study

Palabras clave:

Encía, Fibroblastos, Citoesqueleto de actina, Vimentina, Mitocondria, Hiperplasia gingival; (es)
Gingival Hypertrophy, Gingiva, Fibroblasts, Actin cytoskeleton, Vimentin, Mitochondria, Fluorescent antibody technique indirect. (en)

Autores/as

Objetivo: identificar, describir y diferenciar las características fenotípicas de los fibroblastos gingivales (FGs) en pacientes con hiperplasia gingival idiopática (HGI) e individuos periodontalmente sanos. Métodos: los FGs fueron aislados a partir de tejido gingival de individuos periodontalmente sanos (n=2) y pacientes con HGI (n=2). Los FGs se cultivaron en el medio DMEM (Dulbecco's Modified of Eagle Medium) a 37°C con 5% de CO2. La identificación y localización de la actina, vimentina y mitocondrias en FGs fue realizada y evaluada microscópicamente mediante inmunofluorescencia con anticuerpos monoclonales. La capacidad de migración de los FGs en los pacientes con HGI e individuos sanos también fue estudiada. Resultados: todos los FGs fueron mononucleares, fusiformes y con prolongaciones citoplasmáticas visibles. La faloidina permitió identificar una densa red de actina en los FGs de pacientes con HGI, contrariamente a los FGs de individuos periodontalmente sanos. La vimentina y mitocondrias fueron identificadas en los FGs de individuos sanos y pacientes con HGI sin ninguna alteración en su expresión y localización. La migración de la monocapa de los FGs indicó una actividad de migración celular importante en los FGs de los pacientes con HGI, en relación a los FGs de los individuos periodontalmente sanos. Conclusión: los FGs de pacientes con HGI conservan características fenotípicas celulares similares a los FGs de individuos periodontalmente sanos. Sin embargo, los FGs de pacientes con HGI simulan tener una mayor capacidad migratoria que amerita ser explorada en futuros trabajos de investigación.

Objective: To identify and to describe the phenotypic characteristics of gingival fibroblasts from patients with idiopathic gingival hyperplasia (IGH) and periodontally healthy individuals. Methods: Gingival fibroblasts (GFs) were isolated from gingival tissue from periodontally healthy individuals (n=2) and patients with IGH (n=2). The GFs were grown in DMEM (Dulbecco’s Modified of Eagle Medium) at 37°C with 5% CO2. The identification and location of actin, vimentin and mitochondria in GFs were performed and evaluated microscopically by immunofluorescence with monoclonal antibodies. The migration capacity of GFs from IGH and healthy individuals was also studied. Results: All the GFs were mononuclear, fusiform and with visible cytoplasmic extensions. The phalloidin allowed to identify a dense actin network in the GFs of patients with IGH, contrary to the GFs of periodontally healthy individuals. Vimentin and mitochondria were identified in the GFs of healthy individuals and patients with IGH without any alteration in their expression and location. Monolayer migration of GFs indicates significant cell migration activity in the GFs of patients with IGH in relation to the GFs of periodontally healthy individuals. Conclusion: GFs from patients with IGH retain cellular phenotypic characteristic similar to GFs from periodontally healthy individuals. However, the GFs of patients with IGH simulate having a greater migratory capacity that deserves to be explored in future research works. 

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