| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Rousseau, Michèle Horne, Justine Guénard, Frédéric de Toro-Martín, Juan Garneau, Véronique Guay, Valérie Kearney, Michèle Pilon, Geneviève Roy, Denis Couture, Patrick Couillard, Charles Marette, André Vohl, Marie-Claude |
| Abstract | Background Blueberries contain high levels of polyphenolic compounds with high in vitro antioxidant capacities. Their consumption has been associated with improved vascular and metabolic health. Purpose The objective was to examine the effects of blueberry supplement consumption on metabolic syndrome (MetS) parameters and potential underlying mechanisms of action. Methods A randomized double-blind placebo-controlled intervention trial was conducted in adults at risk of developing MetS. Participants consumed 50 g daily of either a freeze-dried highbush blueberry powder (BBP) or a placebo powder for 8 weeks (n = 49). MetS phenotypes were assessed at weeks 0, 4 and 8. Fasting blood gene expression profiles and plasma metabolomic profiles were examined at baseline and week 8 to assess metabolic changes occurring in response to the BBP. A per-protocol analysis was used. Results A significant treatment effect was observed for plasma triglyceride levels that was no longer significant after further adjustments for age, sex, BMI and baseline values. In addition, the treatment*time interactions were non-significant therefore suggesting that compared with the placebo, BBP had no statistically significant effect on body weight, blood pressure, fasting plasma lipid, insulin and glucose levels, insulin resistance (or sensitivity) or glycated hemoglobin concentrations. There were significant changes in the expression of 49 genes and in the abundance of 35 metabolites following BBP consumption. Differentially regulated genes were clustered in immune-related pathways. Conclusion An 8-week BBP intervention did not significantly improve traditional markers of cardiometabolic health in adults at risk of developing MetS. However, changes in gene expression and metabolite abundance suggest that clinically significant cardiometabolic changes could take longer than 8 weeks to present and/or could result from whole blueberry consumption or a higher dosage. BBP may also have an effect on factors such as immunity even within a shorter 8-week timeframe. Clinical trial registration clinicaltrials.gov, NCT03266055 , 2017 |
| Related Links | https://genesandnutrition.biomedcentral.com/counter/pdf/10.1186/s12263-021-00688-2.pdf |
| Ending Page | 19 |
| Page Count | 19 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 18653499 |
| DOI | 10.1186/s12263-021-00688-2 |
| Journal | Genes & Nutrition |
| Issue Number | 1 |
| Volume Number | 16 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2021-05-17 |
| Access Restriction | Open |
| Subject Keyword | Human Genetics Clinical Nutrition Gene Function Biomedicine Metabolic syndrome Blueberry Overweight/obesity Nutrition Immunity Transcriptomics Metabolomics Gene expression |
| Content Type | Text |
| Resource Type | Article |
| Subject | Endocrinology, Diabetes and Metabolism Genetics |
| Journal Impact Factor | 3.3/2023 |
| 5-Year Journal Impact Factor | 3.8/2023 |
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