Abstract Title:

A purified green barley extract with modulatory properties upon TNF alpha and ROS released by human specialised cells isolated from RA patients.

Abstract Source:

Roum Arch Microbiol Immunol. 1998 Jul-Dec;57(3-4):231-42. PMID: 11845435

Abstract Author(s):

L Cremer, A Herold, D Avram, G Szegli

Article Affiliation:

Cantacuzino Institute, Bucharest, Romania.


Based on the finding that reactive oxygen species (ROS) play important roles in mediating proinflammatory cytokine production (e.g. TNF alpha) and that many plant extracts contain substances with antioxidant properties, we examined the antiinflammatory action of a green barley extract, commercially available as"Natural SOD". The results obtained in this study demonstrate that the antiinflammatory properties of"Natural SOD"due to its micromolecular substances, able to scavenge ROS and to down-regulate TNF alpha production, main inflammation mediators produced by specialised cells from peripheral blood (PB) and synovial fluid (SF) of patients with rheumatoid arthritis (RA). We prepared and tested a purified green barley extract (PE) containing micromolecular substances under 1 kDa, able to inhibit TNF alpha releasing--measured by an bioassay--from LPS stimulated human mononuclear cells (MNC) isolated both from PB and SF of RA patients. Luminol-dependent chemiluminescence has been used to measure the scavenging activity of PE on ROS releasing from activated neutrophils isolated from PB of RA patients. PE, containing high concentrations of substances with antioxidant and antiinflammatory properties, could be a more efficient natural drug for human use than"Natural SOD"in the treatment of RA patients.

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