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Abstract Title:

Curcumin modulates the immune response associated with LPS-induced periodontal disease in rats.

Abstract Source:

Innate Immun. 2011 Jan 17. Epub 2011 Jan 17. PMID: 21242275

Abstract Author(s):

Morgana Rodrigues Guimarães, Sabrina Garcia de Aquino, Leila S Coimbra, Luis Carlos Spolidorio, Keith L Kirkwood, Carlos Rossa

Article Affiliation:

Department of Diagnosis and Surgery, Faculdade de Odontologia de Araraquara, Univ Estadual Paulista (UNESP), Araraquara, SP, Brazil.

Abstract:

Curcumin is a plant-derived dietary spice ascribed various biological activities. Curcumin therapeutic applications have been studied in a variety of conditions, but not on periodontal disease. Periodontal disease is a chronic inflammatory condition initiated by an immune response to micro-organisms of the dental biofilm. Experimental periodontal disease was induced in rats by injecting LPS in the gingival tissues on the palatal aspect of upper first molars (30µg LPS, 3 times/week for 2 weeks). Curcumin was administered to rats daily via oral gavage at 30 and 100 mg/kg body weight. Reverse transcriptase-qPCR and ELISA were used to determine the expression of IL-6, TNF-α and prostaglandin E(2) synthase on the gingival tissues. The inflammatory status wasevaluated by stereometric and descriptive analysis on hematoxylin/eosin-stained sections, whereas modulation of p38 MAPK and NK-κB signaling was assessed by Western blot. Curcumin effectively inhibited cytokine gene expression at mRNA and protein levels, but NF-κB was inhibited only with the lower dose of curcumin, whereas p38 MAPK activation was not affected. Curcumin produced a significant reduction on the inflammatory infiltrate and increased collagen content and fibroblastic cell numbers. Curcumin potently inhibits innate immune responses associated with periodontal disease, suggestinga therapeutic potential in this chronic inflammatory condition.

Study Type : Animal Study

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Sayer Ji
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