Short-term diets enriched in stearic or palmitic acids do not alter plasma lipids, platelet aggregation or platelet activation status

Kelly, F. D., Sinclair, Andrew, Mann, N. J., Turner, A. H., Raffin, F. L., Blandford, M. V. and Pike, M. J. 2002, Short-term diets enriched in stearic or palmitic acids do not alter plasma lipids, platelet aggregation or platelet activation status, European journal of clinical nutrition, vol. 56, no. 6, pp. 490-499.

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Title Short-term diets enriched in stearic or palmitic acids do not alter plasma lipids, platelet aggregation or platelet activation status
Author(s) Kelly, F. D.
Sinclair, Andrew
Mann, N. J.
Turner, A. H.
Raffin, F. L.
Blandford, M. V.
Pike, M. J.
Journal name European journal of clinical nutrition
Volume number 56
Issue number 6
Start page 490
End page 499
Publisher Nature Publishing Group
Place of publication London, England
Publication date 2002-06
ISSN 0954-3007
1476-5640
Keyword(s) stearic acid
platelet fatty acid composition
platelet aggregation
mean platelet volume
platelet activation status
Summary Objective: To determine whether healthy males who consumed increased amounts of dietary stearic acid compared with increased dietary palmitic acid through the consumption of commercially available foods, exhibited any changes in plasma lipids, platelet aggregation or platelet activation status.
Design: A randomised cross-over dietary intervention.
Subjects and interventions: Nine free-living healthy males consumed two experimental diets (stearic acid enriched, diet S, and palmitic acid enriched, diet P) for 3 weeks in a randomised cross-over design separated by a 3 week washout phase. The diets consisted of 30% of energy as fat (30% of which was derived from the treatment diets) providing 13 g=day as stearic acid and 17 g=day as palmitic acid on diet S and 7g=day as stearic acid and 22 g=day as palmitic acid on diet P. The dietary ratio of stearic to palmitic acids was 0.76 on diet S compared with 0.31 on diet P. Blood samples were collected on days 0 and 21 of each dietary period.
Results: LDL cholesterol levels and platelet aggregation response to the agonist ADP were significantly decreased (P <0.025) in subjects on diet S compared with day 0. Apart from that, there were no significant changes in plasma lipids, plateletaggregation, mean platelet volume and platelet reactivity between diets. There were no significant changes in stearic or palmitic acid levels in plasma phospholipid or triacylglycerol. There was a significant difference in palmitic acid levels in platelet phospholipids between the two diets.
Conclusions: Use of commonly available foods led to a 27% increase in stearic acid (diet S) and a 19% increase in palmitic acid (diet P), on diets S and P respectively, and no significant differences between the two diets in plasma lipoprotein concentrations, platelet aggregation or platelet activation status.
Language eng
Field of Research 111199 Nutrition and Dietetics not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2002, Nature Publishing Group
Persistent URL http://hdl.handle.net/10536/DRO/DU:30009198

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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