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  • Title: Platelet aggregation in Finnish men and its relation to fatty acids in platelets, plasma and adipose tissue.
    Author: Salo MK, Vartiainen E, Puska P, Nikkari T.
    Journal: Thromb Haemost; 1985 Oct 30; 54(3):563-9. PubMed ID: 4089791.
    Abstract:
    Platelet aggregation and its relation to fatty acid composition of platelets, plasma and adipose tissue was determined in 196 randomly selected, free-living, 40-49-year-old men in two regions of Finland (east and southwest) with a nearly twofold difference in the IHD rate. There were no significant east-southwest differences in platelet aggregation induced with ADP, thrombin or epinephrine. ADP-induced platelet secondary aggregation showed significant negative associations with all C20-C22 omega 3-fatty acids in platelets (r = -0.26- -0.40) and with the platelet 20: 5 omega 3/20: 4 omega 6 and omega 3/omega 6 ratios, but significant positive correlations with the contents of 18:2 in adipose tissue (r = 0.20) and plasma triglycerides (TG) (r = 0.29). Epinephrine-induced aggregation correlated negatively with 20: 5 omega 3 in plasma cholesteryl esters (CE) (r = -0.23) and TG (r = -0.29), and positively with the total percentage of saturated fatty acids in platelets (r = 0.33), but had no significant correlations with any of the omega 6-fatty acids. Thrombin-induced aggregation correlated negatively with the omega 3/6 omega ratio in adipose tissue (r = -0.25) and the 20: 3 omega 6/20: 4 omega 6 ratio in plasma CE (r = -0.27) and free fatty acids (FFA) (r = -0.23), and positively with adipose tissue 18:2 (r = 0.23) and 20:4 omega 6 (r = 0.22) in plasma phospholipids (PL). The percentages of prostanoid precursors in platelet lipids, i.e. 20:3 omega 6, 20:4 omega 6 and 20:5 omega 3, correlated best with the same fatty acids in plasma CE (r = 0.32 - 0.77) and PL (r = 0.28 - 0.74). Platelet 20:5 omega 3 had highly significant negative correlations with the percentage of 18:2 in adipose tissue and all plasma lipid fractions (r = -0.35 - -0.44).(ABSTRACT TRUNCATED AT 250 WORDS)
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