Predictors of change in omega-3 index with fish oil supplementation in peripheral artery disease.
J Surg Res
; 210: 124-131, 2017 04.
Article
em En
| MEDLINE
| ID: mdl-28457318
ABSTRACT
BACKGROUND:
The omega-3 index represents the red blood cell (RBC) content of two major long-chain n-3 polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid, and docosahexaenoic acid. We sought to determine factors associated with a favorable response to fish oil treatment and to characterize changes in RBC PUFAs associated with fish oil supplementation.METHODS:
This study was a secondary analysis of the OMEGA-PAD I trial, a randomized, double-blinded, placebo-controlled trial investigating short-duration, high-dose n-3 PUFA oral supplementation on endothelial function and inflammation in subjects with peripheral arterial disease. Patients with mild to severe claudication received either 4.4 g of fish oil providing 2.6 g of eicosapentaenoic acid and 1.8 g of docosahexaenoic acid daily (n = 40) or placebo capsules (n = 40) for 1 mo. The RBC fatty acid content was measured by gas chromatography and expressed as a percent of total fatty acids. The change in omega-3 index was calculated as the difference between pre- and post-supplementation in the fish oil and placebo groups. Univariate analysis identified predictors of change in omega-3 index, with these variables included in our multivariable model.RESULTS:
In the fish oil group, there was an increase in the omega-3 index (5.1± 1.3% to 9.0± 1.8%; P < 0.0001), whereas there was no change in the control group. Factors associated with a favorable response (i.e., greater than the median change of 4.06%) included a lower body mass index and higher concentrations of low-density lipoproteins. Other demographic and/or lifestyle factors such as age, race, or smoking status were unrelated to the response. Oral n-3 PUFA supplementation also decreased the n-6 PUFA content in RBCs.CONCLUSIONS:
Short-term, high-dose n-3 PUFA supplementation increases the omega-3 index to a greater extent in patients with a lower body mass index and higher total and low-density lipoprotein cholesterol levels.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ácido Eicosapentaenoico
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Ácidos Docosa-Hexaenoicos
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Suplementos Nutricionais
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Doença Arterial Periférica
Tipo de estudo:
Clinical_trials
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
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Aged
/
Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
J Surg Res
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Canadá