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BACKGROUND AND AIMLow-fat meat (LM) has been considered adequate under a cardiovascular disease point of view. Meat enriched in walnut paste (WM) consumption produces beneficial antithrombogenic effects but with striking inter-individual variability that may be related to gene polymorphism. Variants in the APOA4 gene (APOA4) polymorphism are known to affect the cardiovascular risk. This study aimed to compare the effects of consumption of WM and LM on platelet aggregation, production of thromboxane A2 (TXA2) and prostacyclin I2 (PGI2), and the TXA2/PGI2 ratio in 22 volunteers with different APOA4 polymorphism.SUBJECTS AND METHODSSix volunteers carried the Gln allele (APOA4-2) while 16 were homozygous for the His allele (APOA4-1). Platelet aggregation, TXA2 (measured as TXB2), PGI2 (measured as 6-keto-PGF1α), and the thrombogenic ratio (TXB2/6-keto-PGF1α) were determined at baseline and at weeks 3 and 5 for the WM and LM dietary periods.RESULTSPlatelet aggregation decreased significantly (P<0.05) more in APOA4-1 than in APOA4-2 volunteers at 3-wk WM period, while TXB2 levels dropped more in APOA4-2 than in APOA4-1 volunteers at 5-wk WM period. TXB2 levels and the TXB2/6-keto-PGF1α ratio decreased significantly more (P<0.05) after 5 wk treatment in APOA4-2 than in APOA4-1 carriers on the WM diet than on the LM counterpart. However, 6-keto-PGF1α levels increased more (P<0.05) in APOA4-1 than in APOA4-2 volunteers after the 5-wk WM period than after the 5-wk LM diet.CONCLUSIONSPresent results suggest that consumption of WM with respect to LM decrease the thrombogenic risk more in Gln carriers than in His/His.

nutricion hospitalaria

El efecto del consumo de carne enriquecida en pasta de nuez sobre la agregacion plaquetaria y la trombogenesis varia en voluntarios con diferente genotipo para la apolipoproteina A4