Abstract
Objectives and Study: The increased n-6:n-3 fatty acid ratio in Western diets may contribute to the rapid increase in prevalence of allergic diseases. Key effector cells in allergy are mast cells (MC). Methods: The effect of different fatty acids on MC activation was studied. Therefore separate long chain n-6 (arachidonic acid, AA) and n-3 (eicosapentaenoic acid, EPA and docosahexaenoic acid, DHA) polyunsaturated fatty acid (PUFA) incorporation was investigated in human MC lines (LAD2, HMC-1). Next to degranulation and mediator secretion (release of PGD2 and cytokines such as TNF-alpha, IL-4 and IL-13), generation of reactive oxygen species (ROS) and phosphorylation of mitogen-activated protein kinases (MAPK) was examined. Results: Incubation of MC with AA, EPA or DHA for 24 hours increased PUFA content of the cellular membrane. Incubation with PUFA did not reduce IgE-mediated degranulation by LAD2 cells. However, mediator release of ionomycin/PMA stimulated HMC-1 cells was differentially regulated. IL-13 (P
Original language | English |
---|---|
Pages (from-to) | 12-13 |
Number of pages | 2 |
Journal | Journal of Pediatric Gastroenterology and Nutrition |
Volume | 50 |
DOIs | |
Publication status | Published - 1 Jun 2010 |
Event | European Society for Paediatric Gastroenterology, Hepatology and Nutrition Annual Meeting - Istanbul, Turkey Duration: 9 Jun 2010 → 12 Jun 2010 |
Keywords
- polyunsaturated fatty acid
- interleukin 4
- mitogen activated protein kinase
- prostaglandin synthase inhibitor
- fatty acid
- arachidonic acid
- icosapentaenoic acid
- docosahexaenoic acid
- cytokine
- reactive oxygen metabolite
- immunoglobulin E
- omega 3 fatty acid
- nutrition
- in vitro study
- mast cell
- gastroenterology
- human
- society
- phenotype
- secretion (process)
- allergic disease
- degranulation
- phosphorylation
- prevalence
- allergy
- effector cell
- cell membrane
- mediator release
- diet
- cell activation