Dose-dependent effects of n-3 polyunsaturated fatty acids on platelet activation in mildly hypertriglyceridemic subjects

Yongsoon Park, William S. Harris

Research output: Contribution to journalArticle

8 Scopus citations


The purpose of this study was to determine dose effects of n-3 polyunsaturated fatty acids (PUFAs) on mean platelet volume (MPV) and platelet count (PLT-CT) in mildly hypertriglyceridemic subjects. Subjects with a serum triglyceride level between 100 and 300 mg/dL were placed on a corn oil placebo for 4 weeks and then randomly assigned to groups taking seven capsules per day of placebo (n = 47) or one of the following doses of n-3 PUFAs for 20 weeks: 0.5 g (n = 50), 1 g (n = 23), or 2 g (n = 12). At the end of both the placebo period and the treatment period, MPV and PLT-CT were measured without stimulation (baseline 1 following placebo period, baseline 2 following n-3 supplement period) and after ex vivo stimulation with collagen (10 μg/mL), cold (4°C), and heat (37°C). Collagen and cold significantly increased MPV, whereas heat lowered MPV regardless of treatment. All stimuli decreased PLT-CT. Only the 2 g/day dose of n-3 PUFAs increased MPV at baseline 2 (7.2 ± 0.5 vs. 7.5 ± 0.5 fL) and after the cold stimulus (7.5 ± 0.5 vs. 7.8 ± 0.5 fL). There was no dose-dependent effect of n-3 PUFAs on platelet activation; rather, 2 g of n-3 PUFAs increased MPV slightly in mildly hypertriglyceridemic subjects.

Original languageEnglish (US)
Pages (from-to)809-813
Number of pages5
JournalJournal of Medicinal Food
Issue number4
StatePublished - Aug 1 2009



  • Hypertriglyceridemia
  • N-3 polyunsaturated fatty acids
  • Platelet

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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