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Freeze-dried bilberry (Vaccinium myrtillus) dietary supplement improves walking distance and lipids after myocardial infarction: an open-label randomized clinical trial
Department of Cardiology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Örebro University, School of Medical Sciences. Örebro University Hospital. (Clinical Epidemiology and Biostatistics)
Department of Food Science, Swedish University of Agricultural Sciences, Uppsala, Sweden; Department of Biological Engineering, Food and Nutrition Science, Chalmers University of Technology, Göteborg, Sweden.
Department of Food Science, Swedish University of Agricultural Sciences, Uppsala, Sweden.
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2019 (English)In: Nutrition Research, ISSN 0271-5317, E-ISSN 1879-0739, Vol. 62, p. 13-22Article in journal (Refereed) Published
Abstract [en]

Bilberries, Vaccinium myrtillus, have a high content of phenolic compounds including anthocyanins, which could provide cardiometabolic health benefits following acute myocardial infarction (AMI). We hypothesized that standard medical therapy supplemented with freeze-dried bilberry after AMI would have a more beneficial effect on cardiovascular risk markers and exercise capacity than medical therapy alone. Patients were allocated in a 1:1 ratio within 24 hours of percutaneous coronary intervention in an 8-week trial either to V myrtillus powder (40 g/d, equivalent to 480 g fresh bilberries) and standard medical therapy or to a control group receiving standard medical therapy alone. High-sensitivity C-reactive protein and exercise capacity measured with the 6-minute walk test were the primary biochemical and clinical end points, respectively. Fifty subjects completed the study. No statistically significant difference in high-sensitivity C-reactive protein was detected between groups. The mean 6-minute walk test distance increased significantly more in the bilberry group compared to the control group: mean difference 38 m at follow-up (95% confidence interval 14-62, P = .003). Ex vivo oxidized low-density lipoprotein was significantly lowered in the bilberry group compared to control, geometric mean ratio 0.80 (95% confidence interval 0.66-0.96, P = .017), whereas total cholesterol and low-density lipoprotein cholesterol did not differ significantly between groups. Anthocyanin-derived metabolites in blood increased significantly in the bilberry group during the intervention and were different after 8 weeks between the bilberry group and control. Findings in the present study suggest that bilberries may have clinically relevant beneficial effects following AMI; a larger, double-blind clinical trial is warranted to confirm this.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 62, p. 13-22
Keywords [en]
Anthocyanins, Bilberries, Cholesterol, Exercise test, Inflammation, Myocardial Infarction
National Category
Nutrition and Dietetics
Identifiers
URN: urn:nbn:se:oru:diva-73342DOI: 10.1016/j.nutres.2018.11.008ISI: 000460848800002PubMedID: 30803503Scopus ID: 2-s2.0-85058196483OAI: oai:DiVA.org:oru-73342DiVA, id: diva2:1299083
Note

Funding Agency:

Örebro University Hospital Research Foundation

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26Bibliographically approved

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Bergh, CeciliaWaldenborg, MicaelFröbert, Ole

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