Sour cherry (Prunus cerasus) seed extract increases heme oxygenase-1 expression and decreases proinflammatory signaling in peripheral blood human leukocytes from rheumatoid arthritis patients

Int Immunopharmacol. 2014 May;20(1):188-96. doi: 10.1016/j.intimp.2014.02.031. Epub 2014 Mar 12.

Abstract

Sour cherry seed extract (SCE) was evaluated for its capacity to inhibit lipopolysaccharide-treated human peripheral blood T cells expressing tumor necrosis factor-alpha, and the chemokine interleukin-8. Both proteins are diagnostic biomarkers for inflammatory pathologies. Peripheral blood leukocytes from 11 rheumatoid arthritis (RA) patients and 8 healthy control subjects were co-cultured for 24h in lipopolysaccharide and the extract, then evaluated by flow cytometry for T cell activation and by enzyme-linked immunoassay for lymphocyte-associated heme oxygenase-1 (HO-1) expression. There was a dose-dependent decrease in expression of the immunophenotypes: CD3+TNF-α+, and CD3+IL8+ in cultures from RA patients to a greater extent than in cells from healthy participants. These results suggest that the extract may have a modulatory roll in RA and other inflammatory disorders via the induction of HO-1, thus abating oxidative stress and strengthening regulation of pro-inflammatory signaling pathways.

Keywords: HO-1; IL-8; Peripheral blood; Rheumatoid arthritis; Sour cherry kernel; TNF-α.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Arthritis, Rheumatoid / immunology*
  • CD3 Complex / immunology
  • Cells, Cultured
  • Female
  • Heme Oxygenase-1 / immunology*
  • Humans
  • Interleukin-8 / immunology
  • Leukocytes, Mononuclear / drug effects*
  • Leukocytes, Mononuclear / immunology
  • Lipopolysaccharides
  • Middle Aged
  • Plant Extracts / pharmacology*
  • Prunus*
  • Seeds
  • T-Lymphocytes / drug effects*
  • T-Lymphocytes / immunology
  • Tumor Necrosis Factor-alpha / immunology

Substances

  • CD3 Complex
  • CXCL8 protein, human
  • Interleukin-8
  • Lipopolysaccharides
  • Plant Extracts
  • Tumor Necrosis Factor-alpha
  • HMOX1 protein, human
  • Heme Oxygenase-1