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Article Publish Status: FREE
Abstract Title:

Anti-Inflammatory Effect ofExtract onLipopolysaccharide-Stimulated Macrophages and a Periodontitis Rat Model.

Abstract Source:

Nutrients. 2019 May 22 ;11(5). Epub 2019 May 22. PMID: 31121899

Abstract Author(s):

Seonyoung Kim, Soo-Im Choi, Gun-Hee Kim, Jee-Young Imm

Article Affiliation:

Seonyoung Kim

Abstract:

, an edible marine brown alga (Laminariaceae), is a rich source of phlorotannins. This study aimed to investigate the anti-inflammatory effect ofethanol extract (ECE, dieckol 10.6%,/) onlipopolysaccharide-stimulated inflammation in RAW 264.7 cells and in ligature-induced periodontitis in rats. The levels of nitric oxide (NO) and prostaglandin Ewere decreased by more than half on treatment with 100μg/mL ECE. Downregulated tumor necrosis factor-α, interleukin (IL)-1β, and IL-6 gene expression confirmed the anti-inflammatory properties of ECE. ECE treatment upregulated heme oxygenase-1 (HO-1) expression by 6.3-fold and increased HO-1/nuclear factor erythroid 2-related factor 2 (Nrf-2) signaling decreased nuclear factor-κB (NF-κB) translocation. ECE administration (400 mg/kg) significantly reduced gingival index, restricted tooth mobility, and prevented alveolar bone loss (<0.05). These beneficial effects were due to decreased inflammatory cell infiltration, IL-1β production, and matrix metalloproteinase expression in gingival tissues. The ratio of receptor activator of nuclear factor-κB ligand (RANKL)/osteoprotegerin, a biomarker of periodontitis and osteolysis, was significantly decreased by ECE administration (<0.05). Thus, ECE has potential therapeutic effects for the alleviation of periodontal disease.

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