PMID- 31156785 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220408 IS - 2008-3866 (Print) IS - 2008-3874 (Electronic) IS - 2008-3866 (Linking) VI - 22 IP - 3 DP - 2019 Mar TI - The effect of alpha linolenic acid on tracheal responsiveness, lung inflammation, and immune markers in sensitized rats. PG - 255-261 LID - 10.22038/ijbms.2019.27381.6684 [doi] AB - OBJECTIVES: The effects of alpha linolenic acid (ALA) on tracheal responsiveness (TR), total protein (TP), phospholipase A2 (PLA2), immunoglobulin E (IgE), interleukin 4 (IL-4), interferon gamma (INF-gamma) level and INF-gamma/IL4 ratio in bronchoalveolar lavage fluid (BALF) of sensitized rats were examined. MATERIALS AND METHODS: TR to methacholine and ovalbumin (OA), BALF levels of TP, PLA2 and IgE as well as IL-4, INF-gamma and INF-gamma/IL4 ratio were measured in control group (non-sensitized, group C), sensitized rats to OA (group S), S groups treated with two concentrations of ALA and dexamethasone group. RESULTS: TR to methacholine and OA, BALF levels of TP, PLA2, IgE and IL-4 were significantly increased but BALF level of INF-gamma and INF-gamma/IL4 ratio decreased in group S compared to group C (P<0.001 for all cases). Treated S groups with dexamethasone and both concentrations of ALA lead to significant decrease in TR to methacholine and OA, BALF levels of TP, PLA2, IgE and IL-4 compared to group S (P<0.001 for all case). The effects of all concentrations of ALA on INF-gamma, IL-4 and INF-gamma/IL4 ratio and also the effect of its highest concentration on TP and IgE level were significantly higher than dexamethasone treatment (P<0.001 for all cases). CONCLUSION: Results showed an immune modulatory effect of the ALA that increased INF-gamma, INF-gamma/IL4 ratio (as an index of Th1/Th2) and decreased IL-4 in sensitized rats. ALA also showed preventive effect on inflammatory markers and tracheal responsiveness in sensitized animals comparable to the effect of dexamethasone. FAU - Kaveh, Mahsa AU - Kaveh M AD - Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran. FAU - Eftekhar, Naeima AU - Eftekhar N AD - Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Iran. FAU - Boskabady, Mohammad Hossein AU - Boskabady MH AD - Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. AD - Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. LA - eng PT - Journal Article PL - Iran TA - Iran J Basic Med Sci JT - Iranian journal of basic medical sciences JID - 101517966 PMC - PMC6528709 OTO - NOTNLM OT - Alpha linolenic acid OT - Asthma OT - Inflammatory markers OT - Sensitized rats OT - Th1/Th2 balance OT - Tracheal responsiveness COIS- The authors have no conflict of interests to declare. EDAT- 2019/06/04 06:00 MHDA- 2019/06/04 06:01 PMCR- 2019/03/01 CRDT- 2019/06/04 06:00 PHST- 2019/06/04 06:00 [entrez] PHST- 2019/06/04 06:00 [pubmed] PHST- 2019/06/04 06:01 [medline] PHST- 2019/03/01 00:00 [pmc-release] AID - 10.22038/ijbms.2019.27381.6684 [doi] PST - ppublish SO - Iran J Basic Med Sci. 2019 Mar;22(3):255-261. doi: 10.22038/ijbms.2019.27381.6684.