title: Dietary (n-3) fatty acids alter plasma fatty acids and leukotriene B synthesis by stimulated neutrophils from healthy geriatric Beagles.
abstract: The study objective was to determine the effect of feeding food enriched in (n-3) fatty acids (FA) on plasma FA profiles and leukotriene B (LTB) synthesis by stimulated peripheral blood neutrophils from dogs. For 36 weeks, two groups of dogs (n = 5) were fed food that contained either a low ratio of (n-6)-(n-3) FA (1.31:1; fish oil-enriched food) or a high ratio of (n - 6)-(n-3) FA (40.6:1; corn oil-enriched food). Consumption of food enriched in fish oil resulted in higher plasma concentrations of eicosapentaenoic acid and docosahexaenoic acid and lower concentrations of arachidonic acid. Neutrophils from dogs fed fish oil-enriched food produced 7.6-fold more LTB(5)(P = 0.002), and the ratio of LTB(5)-LTB(4) concentrations was 8.3-fold higher (P < 0.001) compared with dogs fed corn oil-enriched food. Dietary FA can modulate leukotriene production by neutrophils in dogs, and suggests that foods enriched in (n-3) FA from fish oil may have value in the treatment of canine inflammatory diseases.
authors.affiliation: Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Dryden Hall 206, Corvallis, 97331, USA. jean.hall@oregonstate.edu
authors.forename: J A
authors.initials: JA
authors.lastname: Hall
authors.forename: L R
authors.initials: LR
authors.lastname: Henry
authors.forename: S
authors.initials: S
authors.lastname: Jha
authors.forename: M M
authors.initials: MM
authors.lastname: Skinner
authors.forename: D E
authors.initials: DE
authors.lastname: Jewell
authors.forename: R C
authors.initials: RC
authors.lastname: Wander
mesh_terms: D000375:Aging / Q000378:metabolism*; D000818:Animals; D003314:Corn Oil / Q000008:administration & dosage; D004032:Diet; D004285:Dogs; D004435:Eating; D015118:Eicosapentaenoic Acid / Q000031:analogs & derivatives / Q000096:biosynthesis / Q000097:blood; D005227:Fatty Acids / Q000096:biosynthesis* / Q000097:blood; D015525:Fatty Acids, Omega-3 / Q000008:administration & dosage*; D005260:Female; D007975:Leukotriene B4 / Q000031:analogs & derivatives / Q000096:biosynthesis* / Q000097:blood; D009504:Neutrophils / Q000187:drug effects* / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D015525:Fatty Acids, Omega-3; D007975:Leukotriene B4; D003314:Corn Oil; C040212:leukotriene B5; D015118:Eicosapentaenoic Acid