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Dietary free oleic and linoleic acid enhances neutrophil function and modulates the inflammatory response in rats.
- Source :
-
Lipids [Lipids] 2010 Sep; Vol. 45 (9), pp. 809-19. Date of Electronic Publication: 2010 Aug 22. - Publication Year :
- 2010
-
Abstract
- The high ingestion of oleic (OLA) and linoleic (LNA) acids by Western populations, the presence of inflammatory diseases in these populations, and the importance of neutrophils in the inflammatory process led us to investigate the effects of oral ingestion of unesterified OLA and LNA on rat neutrophil function. Pure OLA and LNA were administered by gavage over 10 days. The doses used (0.11, 0.22 and 0.44 g/kg of body weight) were based on the Western consumption of OLA and LNA. Neither fatty acid affected food, calorie or water intake. The fatty acids were not toxic to neutrophils as evaluated by cytometry using propidium iodide (membrane integrity and DNA fragmentation). Neutrophil migration in response to intraperitoneal injection of glycogen and in the air pouch assay, was elevated after administration of either OLA or LNA. This effect was associated with enhancement of rolling and increased release of the chemokine CINC-2alphabeta. Both fatty acids elevated L-selectin expression, whereas no effect on beta(2)-integrin expression was observed, as evaluated by flow cytometry. LNA increased the production of proinflammatory cytokines (IL-1beta and CINC-2alphabeta) by neutrophils after 4 h in culture and both fatty acids decreased the release of the same cytokines after 18 h. In conclusion, OLA and LNA modulate several functions of neutrophils and can influence the inflammatory process.
- Subjects :
- Animals
Cell Adhesion
Diet
Flow Cytometry
Inflammation Mediators metabolism
L-Selectin metabolism
Linoleic Acid pharmacology
Male
Neutrophils immunology
Oleic Acid pharmacology
Rats
Rats, Wistar
Cytokines biosynthesis
Linoleic Acid administration & dosage
Neutrophils drug effects
Oleic Acid administration & dosage
Subjects
Details
- Language :
- English
- ISSN :
- 1558-9307
- Volume :
- 45
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Lipids
- Publication Type :
- Academic Journal
- Accession number :
- 20730605
- Full Text :
- https://doi.org/10.1007/s11745-010-3461-9