La curcumina inhibe la expresión de mediadores proinflamatorios y MMP-9 en células epiteliales gingivales estimuladas durante un período prolongado con lipopolisacáridos derivados de Porphyromonas gingivalis
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ArtículoIdioma: Inglés Editor: 2021Descripción: 9 páginasOtro título: - Curcumin inhibits the expression of proinflammatory mediators and mmp-9 in gingival epithelial cells stimulated for a proloned period whit lipopolysaccharides derived from porphyromonas gingivalis [Otro título]
Curcumin, a yellow phytochemical found in the rhizomes of Curcuma longa, has various biological effects, including anti-oxidant and anti-inflammatory activities. In the present study, we examined the effect of curcumin on the expression of inflammatory cytokines in human gingival epithelial progenitor cells (HGEPs) stimulated for a prolonged period with lipopolysaccharide (LPS) derived from Porphyromonas gingivalis. The cells were alternately cultured with LPS and/or curcumin every 3 days for 18 days. The expression levels of TNF-a, IL-1ß, IL-6, TIMP-1, and MMP-9 in the HGEPs were evaluated by quantitative real-time polymerase chain reaction. Enzyme-linked immunosorbent assay was used to measure the concentrations of these five proteins in the supernatant and nuclear factor (NF)-?B in the nuclear extracts. Curcumin inhibited the mRNA expression levels of TNF-a, IL-1ß, IL-6, and MMP-9 in HGEPs treated with curcumin over a prolonged period. Similarly, the expression levels of IL-1ß, IL-6, and MMP-9 were decreased in the culture supernatants. NF-?B activity was also inhibited in the cells cultured with curcumin. In conclusion, these findings indicate that curcumin inhibits the expression of inflammatory cytokines and MMP-9 in primary gingival epithelial cells stimulated with P. gingivalis-derived LPS via NF-?B activation.