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Allaire J, Moreel X, Labonté MÈ, Léger C, Caron A, Julien P, Lamarche B, Fradet V. Validation of the omega-3 fatty acid intake measured by a web-based food frequency questionnaire against omega-3 fatty acids in red blood cells in men with prostate cancer. Eur J Clin Nutr 2015; 69:1004-8. [PMID: 25758837 DOI: 10.1038/ejcn.2015.7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 12/08/2014] [Accepted: 01/08/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND/OBJECTIVES The objective of this study was to evaluate the ability of a web-based self-administered food frequency questionnaire (web-FFQ) to assess the omega-3 (ω-3) fatty acids (FAs) intake of men affected with prostate cancer (PCa) against a biomarker. SUBJECTS/METHODS The study presented herein is a sub-study from a phase II clinical trial. Enrolled patients afflicted with PCa were included in the sub-study analysis if the FA profiles from the red blood cell (RBC) membranes and FA intakes at baseline were both determined at the time of the data analysis (n=60). Spearman's correlation coefficients were calculated to estimate the correlations between FA intakes and their proportions in the RBC membranes. RESULTS Intakes of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were highly correlated with their respective proportions in the RBC membranes (both rs=0.593, P<0.0001). Correlation between alpha-linolenic acid (ALA) intake and its proportion in RBC was not significant (rs=0.130, P=0.332). Correlations were observed between fatty fish intake and total ω-3 FAs (rs=0.304, P=0.02), total long-chain ω-3 FAs (rs=0.290, P=0.03) and DHA (rs=0.328, P=0.01) in RBC membranes. CONCLUSIONS This study has shown that the web-FFQ is an accurate tool to assess total long-chain ω-3 FAs, EPA and DHA but not ALA intake in clinical trials and epidemiological studies carried out in men with PCa.
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Affiliation(s)
- J Allaire
- Department of Surgery (Urology), CHU de Québec, L'Hôtel-Dieu de Quebec, Quebec City, Canada.,CHU de Québec, Research Center, Oncology Axis, CHU de Québec, Laval University, Quebec City, Canada
| | - X Moreel
- Department of Surgery (Urology), CHU de Québec, L'Hôtel-Dieu de Quebec, Quebec City, Canada.,CHU de Québec, Research Center, Oncology Axis, CHU de Québec, Laval University, Quebec City, Canada
| | - M-È Labonté
- Institute of Nutrition and Functional Foods, Laval University, Quebec City, Canada
| | - C Léger
- Department of Surgery (Urology), CHU de Québec, L'Hôtel-Dieu de Quebec, Quebec City, Canada.,CHU de Québec, Research Center, Oncology Axis, CHU de Québec, Laval University, Quebec City, Canada
| | - A Caron
- Department of Surgery (Urology), CHU de Québec, L'Hôtel-Dieu de Quebec, Quebec City, Canada.,CHU de Québec, Research Center, Oncology Axis, CHU de Québec, Laval University, Quebec City, Canada
| | - P Julien
- CHU de Québec Research Center, Endocrinology and Nephrology Axis, CHU de Québec, Laval University, Quebec City, Canada
| | - B Lamarche
- Institute of Nutrition and Functional Foods, Laval University, Quebec City, Canada
| | - V Fradet
- Department of Surgery (Urology), CHU de Québec, L'Hôtel-Dieu de Quebec, Quebec City, Canada.,CHU de Québec, Research Center, Oncology Axis, CHU de Québec, Laval University, Quebec City, Canada.,Institute of Nutrition and Functional Foods, Laval University, Quebec City, Canada
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Fradet V, Neveu B, Moreel X, Bergeron A, Larue H, Fradet Y. UP-02.084 Active Inflammatory State and Reactivity of Normal Prostate Epithelium and Aggressive Prostate Cancer. Urology 2011. [DOI: 10.1016/j.urology.2011.07.902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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