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Evaluation of Effects of Dietary n-6 to n-3 Fatty Acid Ratios on Leukotriene B Synthesis in Dog Skin and Neutrophils.

作者信息

Vaughn Dana M, Reinhart Gregory A, Swaim Steven F, Lauten Susan D, Garner Carl A, Boudreaux Mary K, Spano Joe S, Hoffman Charles E, Conner Brenda

机构信息

*Laboratory of Companion Animal Nutrition.

†Scott-Ritchey Research Center.

出版信息

Vet Dermatol. 1994 Dec;5(4):163-173. doi: 10.1111/j.1365-3164.1994.tb00028.x.


DOI:10.1111/j.1365-3164.1994.tb00028.x
PMID:34644964
Abstract

Résumé- Les effets d'alimentations supplémentées avec des ratios croissants decides gras polyinsaturés n - 6/n - 3 sur la synthèse de leucotriènes B dans la peau du chien et les neutrophiles sont présentés. Trente chien Beagles ont reçu pendant 2 mois avec une alimentation ayant un ratio n -6/n -3 de 28:1. Des aliments expérimentaux contenant des ratios de 5:1, 10:1, 25:1, 50:1 et 100:1 (six chiens par groupe) ont été administrés ensuite pendant 12 semaines. A la fin des deux mois d'alimentation témoin et au bout de 6 et 12 semaines d'alimentation expérimentale, les concentrations de LTB4 et LTB5 dans la peau et les neutrophiles ont été déterminées. Les neutrophiles de chiens ayant mangé des aliments de ratio 5:1 et 10:1 ont synthétisé 30-33 pourcent moins de LTB4 (P <0,05) et 370-500 pourcent plus de LTB5 (P <0,05) à 6 et 12 semaines, mais le relargage d'anions superoxide était inchangé. La peau des chiens stimulée par un lipopolysaccharide a synthétisé 48 à 62 pourcent moins de LTB4 (P < 0,05) et 48 à 79 pourcent moins de LTB5 (P <0,05) à 12 semaines. [Vaughan, D. M., Reinhart, G. A., Swaim, S. F., Lauten, S. D., Garner, C. A., Boudreaux, M. K., Spano, J. S., Hoffman, C. E., Conner, B. Evaluation of effects of dietary n -6 to n - 3 fatty acid ratios on leukotriéne B synthesis in dog skin and neutrophils. (Evaluation de l'effet du ratio d'acides gras n - 6/n - 3 dans l'alimentation sur la synthèse de leucotriènes B dans la peau du chien et les neutrophiles). Resumen- Evaluamos los efectos producidos por el aumento en la proportion de ácidos grasos poli-insatu-rados n-6 a n-3 en la dieta sobre la sintesis de leucotrienos B en la piel del perro y en los neutrófilos. Se administró durante dos meses una dieta con una proporión 28:1 de ácidos grasos n-6 a n-3 a un grupo de treinta Beagles. Se administraron dietas experimentales con proporciones de 5:1, 10:1, 25:1, 50:1 y 100:1 durante 12 semanas (seis perros por grupo). Se cuantificaron los niveles de leucotrienos B y B en la piel y en los neutrófilos al final de los dos meses de dieta control y a las 6 y 12 semanas de la dieta-tratamiento. Los neutrófilos de perros con dietas 5:1 y 10:1 sintetizaron 30 a 33% menos leucotrieno B (P < 0.05) y 370 a 500% más leucotrieno B (P <0.05) a las 6 y 12 semanas pero no alteraron la liberación de aniones superóxido durante la espiracion. La piel de perro estimulada con lipopolisacáridos sintetizó de 48 a 62% menos leucotrieno B (P < 0.05) y 48 a 79% más leucotrieno B (P < 0.05) a las 12 semanas. [Evaluation of effects of dietary n-6 to n-3 fatty acid ratios on leukotriene B synthesis in dog skin and neutrophils (Effecto de la proporción de ácidos grasos n-6 a n-3 en la dieta sobre la sintesis de leucotrienos B en la piel del perro y en los neutrófilos). Abstract- The effects of diets supplemented with increasing ratios of n-6 to n-3 polyunsaturated fatty acids on leukotriene B synthesis in dog skin and neutrophils were evaluated. Thirty Beagles were conditioned for 2 months on a diet with an n-6 to n-3 fatty acid ratio of 28:1. Experimental diets, containing n-6 to n-3 ratios of 5:1, 10:1, 25:1, 50:1 and 100:1 (six dogs/group), were fed for 12 weeks. At the end of the 2 month control diet period, and again at 6 and 12 weeks of treatment feeding, leukotriene B and leukotriene B were quantitated in skin and neutrophils. Neutrophils from dogs fed the 5:1 and 10:1 diets synthesized 30-33 per cent less leukotriene B (P < 0.05) and 370-500 per cent greater leukotriene B (P < 0.05) at 6 and 12 weeks, but had no change in the release of superoxide anions during respiratory burst. Lipopolysaccharide-stimu-lated dog skin synthesized 48-62 per cent less leukotriene B (P < 0.05) and 48-79 per cent more leukotriene B (P <0.05) at 12 weeks.

摘要

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