Anti-inflammatory effect of grape (Vitis vinifera L.) seed extract through the downregulation of NF-κB and MAPK pathways in LPS-induced RAW264.7 macrophages

H. Harbeoui,A. Hichami,W. A. Wannes,J. Lemput,M. Tounsi,N. Khan

Published 2019 in South African Journal of Botany

ABSTRACT

Abstract The aim of this study was to enhance the anti-inflammatory potential of grape (Vitis vinifera L.) seed extract (GSE) in lipopolysaccharide (LPS) activated murine macrophage RAW264.7 cells. The total phenol content of GSE was 112.66 mg GAE/g in Carignan, 142.33 mg GAE/g in Merlot and 161.66 mg GAE/g in Syrah. GSE contained 12 phenol compounds including 8 flavan-3-ols (catechin, epigallocatechin gallate, epicatechin, procyanidin b1, procyanidin b4, procyanidin b2), 3 flavonols (kaempferol, myricitrinand quercetin) and only 1 phenolic acid (gallic acid). GSE significantly suppressed the gene expression and protein secretion of tumor necrosis factor-α (TNF-α), interleukin (IL-6), inducible isoform of nitric oxide synthase (iNOS) and nitric oxide (NO) in LPS stimulated RAW 264.7 cells. This decrease was correlated with the down-regulation of inflammatory cascade such as nuclear factor kappa B (NF-κB) and mitogen activated protein kinase (MAPKs). As GSE could be applied for the development of new anti-inflammatory drug, further researches must be performed to isolate the specific components of GAE that contribute against inflammation.

PUBLICATION RECORD

  • Publication year

    2019

  • Venue

    South African Journal of Botany

  • Publication date

    2019-09-01

  • Fields of study

    Agricultural and Food Sciences, Chemistry, Environmental Science

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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