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Morin-Bernier J, de Toro-Martín J, Barbe V, San-Cristobal R, Lemieux S, Rudkowska I, Couture P, Barbier O, Vohl MC. Revisiting multi-omics-based predictors of the plasma triglyceride response to an omega-3 fatty acid supplementation. Front Nutr 2024; 11:1327863. [PMID: 38414488 PMCID: PMC10897027 DOI: 10.3389/fnut.2024.1327863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/29/2024] [Indexed: 02/29/2024] Open
Abstract
Background The aim of the present study was to identify the metabolomic signature of responders and non-responders to an omega-3 fatty acid (n-3 FA) supplementation, and to test the ability of a multi-omics classifier combining genomic, lipidomic, and metabolomic features to discriminate plasma triglyceride (TG) response phenotypes. Methods A total of 208 participants of the Fatty Acid Sensor (FAS). Study took 5 g per day of fish oil, providing 1.9-2.2 g eicosapentaenoic acid (EPA) and 1.1 g docosahexaenoic (DHA) daily over a 6-week period, and were further divided into two subgroups: responders and non-responders, according to the change in plasma TG levels after the supplementation. Changes in plasma levels of 6 short-chain fatty acids (SCFA) and 25 bile acids (BA) during the intervention were compared between subgroups using a linear mixed model, and the impact of SCFAs and BAs on the TG response was tested in a mediation analysis. Genotyping was conducted using the Illumina Human Omni-5 Quad BeadChip. Mass spectrometry was used to quantify plasma TG and cholesterol esters levels, as well as plasma SCFA and BA levels. A classifier was developed and tested within the DIABLO framework, which implements a partial least squares-discriminant analysis to multi-omics analysis. Different classifiers were developed by combining data from genomics, lipidomics, and metabolomics. Results Plasma levels of none of the SCFAs or BAs measured before and after the n-3 FA supplementation were significantly different between responders and non-responders. SCFAs but not BAs were marginally relevant in the classification of plasma TG responses. A classifier built by adding plasma SCFAs and lipidomic layers to genomic data was able to even the accuracy of 85% shown by the genomic predictor alone. Conclusion These results inform on the marginal relevance of SCFA and BA plasma levels as surrogate measures of gut microbiome in the assessment of the interindividual variability observed in the plasma TG response to an n-3 FA supplementation. Genomic data still represent the best predictor of plasma TG response, and the inclusion of metabolomic data added little to the ability to discriminate the plasma TG response phenotypes.
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Affiliation(s)
- Josiane Morin-Bernier
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
| | - Juan de Toro-Martín
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
| | - Valentin Barbe
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
| | - Rodrigo San-Cristobal
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
| | - Simone Lemieux
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
| | - Iwona Rudkowska
- Laboratory of Molecular Pharmacology, Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec-Université Laval Research Center, Québec, QC, Canada
- Department of Kinesiology, Université Laval, Québec, QC, Canada
| | - Patrick Couture
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
| | - Olivier Barbier
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- Laboratory of Molecular Pharmacology, Endocrinology and Nephrology Unit, Centre hospitalier universitaire de Québec-Université Laval Research Center, Québec, QC, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
| | - Marie-Claude Vohl
- Centre Nutrition, santé et société (NUTRISS)—Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, QC, Canada
- School of Nutrition, Université Laval, Québec, QC, Canada
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Hames A, Khan S, Gilliland C, Goldman L, Lo HW, Magda K, Keathley J. Carriers of autosomal recessive conditions: are they really 'unaffected?'. J Med Genet 2023; 61:1-7. [PMID: 37775265 DOI: 10.1136/jmg-2023-109563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/11/2023] [Indexed: 10/01/2023]
Abstract
Mendel's Law of Dominance suggests that recessive disease expression requires the inheritance of two mutated alleles as the dominant, wildtype allele suppresses disease presentation leading to the expression of physiological normal phenotypes. However, there is existing evidence that challenges this school of thought. Here, we summarise existing literature evaluating metabolic and health impacts among carriers of autosomal recessive conditions, focusing on phenylketonuria (PKU), classical homocystinuria, galactosemia and Usher syndrome as examples. Our findings suggest that carriers, often described as 'unaffected', may actually display attenuated symptoms for the recessive disease they are carrying. For instance, PKU is an inborn error of metabolism characterised by the build-up of plasma phenylalanine attributed to the deficiency of the phenylalanine hydroxylase (PAH) enzyme. While less severe, PKU carriers also exhibit this impaired enzymatic activity, leading to elevated plasma phenylalanine levels, especially after phenylalanine consumption. Related to these metabolic alterations in the PAH pathway, there is early evidence to suggest that PKU carriers may have compromised cognitive and mental health outcomes. Overall, research on the health and metabolic impacts of PKU carriers is sparse, with most studies conducted several decades ago. However, early evidence suggests that intermediate phenotypes among carriers of autosomal recessive conditions are plausible. The illustrated possible intermediate phenotypes observed among carriers necessitates future research to determine possible clinical implications among this population.
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Affiliation(s)
- Amber Hames
- Department of Family Relations and Applied Nutrition, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Sophia Khan
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Clara Gilliland
- Department of Food Science, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Lucy Goldman
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Hillary Wh Lo
- Department of Family Relations and Applied Nutrition, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Kevin Magda
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Southwestern Ontario, Canada
- Department of Biomedical Sciences, University of Guelph, Guelph, Southwestern Ontario, Canada
| | - Justine Keathley
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Southwestern Ontario, Canada
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Hong BV, Agus JK, Tang X, Zheng JJ, Romo EZ, Lei S, Zivkovic AM. Precision Nutrition and Cardiovascular Disease Risk Reduction: the Promise of High-Density Lipoproteins. Curr Atheroscler Rep 2023; 25:663-677. [PMID: 37702886 PMCID: PMC10564829 DOI: 10.1007/s11883-023-01148-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2023] [Indexed: 09/14/2023]
Abstract
PURPOSE OF REVIEW Emerging evidence supports the promise of precision nutritional approaches for cardiovascular disease (CVD) prevention. Here, we discuss current findings from precision nutrition trials and studies reporting substantial inter-individual variability in responses to diets and dietary components relevant to CVD outcomes. We highlight examples where early precision nutrition research already points to actionable intervention targets tailored to an individual's biology and lifestyle. Finally, we make the case for high-density lipoproteins (HDL) as a compelling next generation target for precision nutrition aimed at CVD prevention. HDL possesses complex structural features including diverse protein components, lipids, size distribution, extensive glycosylation, and interacts with the gut microbiome, all of which influence HDL's anti-inflammatory, antioxidant, and cholesterol efflux properties. Elucidating the nuances of HDL structure and function at an individual level may unlock personalized dietary and lifestyle strategies to optimize HDL-mediated atheroprotection and reduce CVD risk. RECENT FINDINGS Recent human studies have demonstrated that HDL particles are key players in the reduction of CVD risk. Our review highlights the role of HDL and the importance of personalized therapeutic approaches to improve their potential for reducing CVD risk. Factors such as diet, genetics, glycosylation, and gut microbiome interactions can modulate HDL structure and function at the individual level. We emphasize that fractionating HDL into size-based subclasses and measuring particle concentration are necessary to understand HDL biology and for developing the next generation of diagnostics and biomarkers. These discoveries underscore the need to move beyond a one-size-fits-all approach to HDL management. Precision nutrition strategies that account for personalized metabolic, genetic, and lifestyle data hold promise for optimizing HDL therapies and function to mitigate CVD risk more potently. While human studies show HDL play a key role in reducing CVD risk, recent findings indicate that factors such as diet, genetics, glycosylation, and gut microbes modulate HDL function at the individual level, underscoring the need for precision nutrition strategies that account for personalized variability to optimize HDL's potential for mitigating CVD risk.
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Affiliation(s)
- Brian V Hong
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Joanne K Agus
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Xinyu Tang
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Jack Jingyuan Zheng
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Eduardo Z Romo
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Susan Lei
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA
| | - Angela M Zivkovic
- Department of Nutrition, University of California, Davis, Davis, CA, 95616, USA.
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Rundblad A, Sandoval V, Holven KB, Ordovás JM, Ulven SM. Omega-3 fatty acids and individual variability in plasma triglyceride response: A mini-review. Redox Biol 2023; 63:102730. [PMID: 37150150 PMCID: PMC10184047 DOI: 10.1016/j.redox.2023.102730] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/25/2023] [Accepted: 05/03/2023] [Indexed: 05/09/2023] Open
Abstract
Cardiovascular disease (CVD) is a leading cause of death worldwide. Supplementation with the marine omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) is associated with lower CVD risk. However, results from randomized controlled trials that examine the effect of omega-3 supplementation on CVD risk are inconsistent. This risk-reducing effect may be mediated by reducing inflammation, oxidative stress and serum triglyceride (TG) levels. However, not all individuals respond by reducing TG levels after omega-3 supplementation. This inter-individual variability in TG response to omega-3 supplementation is not fully understood. Hence, we aim to review the evidence for how interactions between omega-3 fatty acid supplementation and genetic variants, epigenetic and gene expression profiling, gut microbiota and habitual intake of omega-3 fatty acids can explain why the TG response differs between individuals. This may contribute to understanding the current controversies and play a role in defining future personalized guidelines to prevent CVD.
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Affiliation(s)
- Amanda Rundblad
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, P.O Box 1046 Blindern, 0317, Oslo, Norway
| | - Viviana Sandoval
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, P.O Box 1046 Blindern, 0317, Oslo, Norway; Escuela de Nutrición y Dietética, Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, Gral. Lagos 1025, 5110693, Valdivia, Chile
| | - Kirsten B Holven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, P.O Box 1046 Blindern, 0317, Oslo, Norway; Norwegian National Advisory Unit on Familial Hypercholesterolemia, Oslo University Hospital, Norway
| | - José M Ordovás
- Nutrition and Genomics Laboratory, USDA ARS, JM-USDA Human Research Center on Aging at Tufts University, Boston, MA, USA; Nutritional Genomics and Epigenomics Group, Precision Nutrition and Obesity Program, IMDEA Food, CEI UAM + CSIC, Madrid, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Institute of Health Carlos III, Madrid, Spain
| | - Stine M Ulven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, P.O Box 1046 Blindern, 0317, Oslo, Norway.
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Update of a Genetic Risk Score Predictive of the Plasma Triglyceride Response to an Omega-3 Fatty Acid Supplementation in the FAS Study. Nutrients 2023; 15:nu15051156. [PMID: 36904157 PMCID: PMC10005670 DOI: 10.3390/nu15051156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
A genetic risk score (GRS) predictive of the plasma triglyceride (TG) response to an omega-3 fatty acid (n-3 FA) supplementation has been previously developed in the Fatty Acid Sensor (FAS) Study. Recently, novel single nucleotide polymorphisms (SNPs) interacting with a fish oil supplementation and associated with plasma lipid levels have been identified in the UK Biobank. The aim of this study was to verify whether the addition of SNPs identified in the UK Biobank to the GRS built in the FAS Study improves its capacity to predict the plasma TG response to an n-3 FA supplementation. SNPs interacting with fish oil supplementation in the modulation of plasma lipid levels in the UK Biobank and associated with plasma TG levels have been genotyped in participants of the FAS Study (n = 141). Participants have been supplemented with 5 g fish oil/day for six weeks. Plasma TG concentrations were measured before and after the supplementation. Based on the initial GRS of 31 SNPs (GRS31), we computed three new GRSs by adding new SNPs identified in the UK Biobank: GRS32 (rs55707100), GRS38 (seven new SNPs specifically associated with plasma TG levels), and GRS46 (all 15 new SNPs associated with plasma lipid levels). The initial GRS31 explained 50.1% of the variance in plasma TG levels during the intervention, whereas GRS32, GRS38, and GRS46 explained 49.1%, 45.9%, and 45%, respectively. A significant impact on the probability of being classified as a responder or a nonresponder was found for each of the GRSs analyzed, but none of them outperformed the predictive capacity of GRS31 in any of the metrics analyzed, i.e., accuracy, area under the response operating curve (AUC-ROC), sensitivity, specificity and McFadden's pseudo R2. The addition of SNPs identified in the UK Biobank to the initial GRS31 did not significantly improve its capacity to predict the plasma TG response to an n-3 FA supplementation. Thus, GRS31 still remains the most precise tool so far by which to discriminate the individual responsiveness to n-3 FAs. Further studies are needed in the field to increase our knowledge of factors underlying the heterogeneity observed in the metabolic response to an n-3 FA supplementation.
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Keathley J, Garneau V, Marcil V, Mutch DM, Robitaille J, Rudkowska I, Sofian GM, Desroches S, Vohl MC. Nutrigenetics, omega-3 and plasma lipids/lipoproteins/apolipoproteins with evidence evaluation using the GRADE approach: a systematic review. BMJ Open 2022; 12:e054417. [PMID: 35193914 PMCID: PMC8867311 DOI: 10.1136/bmjopen-2021-054417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES Despite the uptake of nutrigenetic testing through direct-to-consumer services and healthcare professionals, systematic reviews determining scientific validity are limited in this field. The objective of this review was to: retrieve, synthesise and assess the quality of evidence (confidence) for nutrigenetic approaches related to the effect of genetic variation on plasma lipid, lipoprotein and apolipoprotein responsiveness to omega-3 fatty acid intake. DESIGN A systematic review was conducted using three search engines (Embase, Web of Science and Medline) for articles published up until 1 August 2020. We aimed to systematically search, identify (select) and provide a narrative synthesis of all studies that assessed nutrigenetic associations/interactions for genetic variants (comparators) influencing the plasma lipid, lipoprotein and/or apolipoprotein response (outcomes) to omega-3 fatty acid intake (intervention/exposure) in humans-both paediatric and adult populations (population). We further aimed to assess the overall quality of evidence for specific priority nutrigenetic associations/interactions based on the following inclusion criteria: nutrigenetic associations/interactions reported for the same genetic variants (comparators) influencing the same plasma lipid, lipoprotein and/or apolipoprotein response (outcomes) to omega-3 fatty acid intake (intervention/exposure) in humans-both paediatric and adult populations (population) in at least two independent studies, irrespective of the findings. Risk of bias was assessed in individual studies. Evidence was evaluated using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach with a modification to further consider biological plausibility. RESULTS Out of 1830 articles screened, 65 met the inclusion criteria for the narrative synthesis (n=23 observational, n=42 interventional); of these, 25 met the inclusion criteria for GRADE evidence evaluation. Overall, current evidence is insufficient for gene-diet associations related to omega-3 fatty acid intake on plasma apolipoproteins, total cholesterol, high-density lipoprotein-cholesterol, low-density lipoprotein (LDL)-cholesterol and LDL particle size. However, there is strong (GRADE rating: moderate quality) evidence to suggest that male APOE-E4 carriers (rs429358, rs7412) exhibit significant triglyceride reductions in response to omega-3-rich fish oil with a dose-response effect. Moreover, strong (GRADE rating: high quality) evidence suggests that a 31-SNP nutrigenetic risk score can predict plasma triglyceride responsiveness to omega-3-rich fish oil in adults with overweight/obesity from various ethnicities. CONCLUSIONS Most evidence in this area is weak, but two specific nutrigenetic interactions exhibited strong evidence, with generalisability limited to specific populations. PROSPERO REGISTRATION NUMBER CRD42020185087.
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Affiliation(s)
- Justine Keathley
- Université Laval, Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Quebec, Quebec City, Quebec, Canada
- Universite Laval, School of Nutrition, Quebec City, Quebec, Canada
| | - Véronique Garneau
- Université Laval, Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Quebec, Quebec City, Quebec, Canada
- Universite Laval, School of Nutrition, Quebec City, Quebec, Canada
| | - Valérie Marcil
- Department of Nutrition, University of Montréal, Montréal, Quebec, Canada
- Research Centre, Sainte-Justine University Health Centre, Montréal, Quebec, Canada
| | - David M Mutch
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Julie Robitaille
- Université Laval, Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Quebec, Quebec City, Quebec, Canada
- Universite Laval, School of Nutrition, Quebec City, Quebec, Canada
| | - Iwona Rudkowska
- Department of Kinesiology, Université Laval, Quebec City, Quebec, Canada
- Endocrinology and Nephrology Unit, CHU de Québec - Université Laval Research Center, Quebec City, Quebec, Canada
| | | | - Sophie Desroches
- Université Laval, Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Quebec, Quebec City, Quebec, Canada
- Universite Laval, School of Nutrition, Quebec City, Quebec, Canada
| | - Marie-Claude Vohl
- Université Laval, Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Quebec, Quebec City, Quebec, Canada
- Universite Laval, School of Nutrition, Quebec City, Quebec, Canada
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Keathley J, Garneau V, Marcil V, Mutch DM, Robitaille J, Rudkowska I, Sofian G, Desroches S, Vohl MC. Clinical Practice Guidelines Using GRADE and AGREE II for the Impact of Genetic Variants on Plasma Lipid/Lipoprotein/Apolipoprotein Responsiveness to Omega-3 Fatty Acids. Front Nutr 2022; 8:768474. [PMID: 35237638 PMCID: PMC8883048 DOI: 10.3389/fnut.2021.768474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/20/2021] [Indexed: 12/18/2022] Open
Abstract
Background A recent systematic review, which used the GRADE methodology, concluded that there is strong evidence for two gene-diet associations related to omega-3 and plasma triglyceride (TG) responses. Systematic reviews can be used to inform the development of clinical practice guidelines (CPGs). Objective To provide guidance for clinical practice related to genetic testing for evaluating responsiveness to dietary/supplemental omega-3s and their impact on plasma lipids/lipoproteins/apolipoproteins. Design Using the results of the abovementioned systematic review, the first CPGs in nutrigenetics were developed using the established GRADE methodology and AGREE II approach. Results Three clinical practice recommendations were developed. Most gene-diet associations identified in the literature lack adequate scientific and clinical validity to warrant consideration for implementing in a practice setting. However, two gene-diet associations with strong evidence (GRADE quality: moderate and high) can be considered for implementation into clinical practice in certain cases: male APOE-E4 carriers (rs429358, rs7412) and TG changes in response to the omega-3 fatty acids eicosapentaenoic acid (EPA) and/or docosahexaenoic acid (DHA) as well as a 31-SNP nutrigenetic risk score and TG changes in response to EPA+DHA among adults with overweight/obesity. Ethical and regulatory implications must be considered when providing APOE nutrigenetic tests given the well-established link between APOE genetic variation and Alzheimer's Disease. Conclusion Most of the evidence in this area is not ready for implementation into clinical practice primarily due to low scientific validity (low quality of evidence). However, the first CPGs in nutrigenetics have been developed for two nutrigenetic associations with strong scientific validity, related to dietary/supplemental omega-3 and TG responses.
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Affiliation(s)
- Justine Keathley
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Véronique Garneau
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Valérie Marcil
- Research Centre, Sainte-Justine University Health Centre, Montréal, QC, Canada
- Department of Nutrition, Université de Montréal, Montréal, QC, Canada
| | - David M. Mutch
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Julie Robitaille
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Iwona Rudkowska
- Endocrinology and Nephrology Unit, Centre Hospitalier Universitaire de Québec-Université Laval Research Center, Québec City, QC, Canada
- Department of Kinesiology, Université Laval, Québec City, QC, Canada
| | | | - Sophie Desroches
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Marie-Claude Vohl
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
- *Correspondence: Marie-Claude Vohl
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Keathley J, Garneau V, Zavala-Mora D, Heister RR, Gauthier E, Morin-Bernier J, Green R, Vohl MC. A Systematic Review and Recommendations Around Frameworks for Evaluating Scientific Validity in Nutritional Genomics. Front Nutr 2021; 8:789215. [PMID: 35004815 PMCID: PMC8728558 DOI: 10.3389/fnut.2021.789215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/26/2021] [Indexed: 12/18/2022] Open
Abstract
Background: There is a significant lack of consistency used to determine the scientific validity of nutrigenetic research. The aims of this study were to examine existing frameworks used for determining scientific validity in nutrition and/or genetics and to determine which framework would be most appropriate to evaluate scientific validity in nutrigenetics in the future.Methods: A systematic review (PROSPERO registration: CRD42021261948) was conducted up until July 2021 using Medline, Embase, and Web of Science, with articles screened in duplicate. Gray literature searches were also conducted (June-July 2021), and reference lists of two relevant review articles were screened. Included articles provided the complete methods for a framework that has been used to evaluate scientific validity in nutrition and/or genetics. Articles were excluded if they provided a framework for evaluating health services/systems more broadly. Citing articles of the included articles were then screened in Google Scholar to determine if the framework had been used in nutrition or genetics, or both; frameworks that had not were excluded. Summary tables were piloted in duplicate and revised accordingly prior to synthesizing all included articles. Frameworks were critically appraised for their applicability to nutrigenetic scientific validity assessment using a predetermined categorization matrix, which included key factors deemed important by an expert panel for assessing scientific validity in nutrigenetics.Results: Upon screening 3,931 articles, a total of 49 articles representing 41 total frameworks, were included in the final analysis (19 used in genetics, 9 used in nutrition, and 13 used in both). Factors deemed important for evaluating nutrigenetic evidence related to study design and quality, generalizability, directness, consistency, precision, confounding, effect size, biological plausibility, publication/funding bias, allele and nutrient dose-response, and summary levels of evidence. Frameworks varied in the components of their scientific validity assessment, with most assessing study quality. Consideration of biological plausibility was more common in frameworks used in genetics. Dose-response effects were rarely considered. Two included frameworks incorporated all but one predetermined key factor important for nutrigenetic scientific validity assessment.Discussion/Conclusions: A single existing framework was highlighted as optimal for the rigorous evaluation of scientific validity in nutritional genomics, and minor modifications are proposed to strengthen it further.Systematic Review Registration:https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=261948, PROSPERO [CRD42021261948].
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Affiliation(s)
- Justine Keathley
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
- Mass General Brigham, Boston, MA, United States
- Ariadne Labs, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
- The Broad Institute, Boston, MA, United States
| | - Véronique Garneau
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | | | | | - Ellie Gauthier
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Josiane Morin-Bernier
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
| | - Robert Green
- Mass General Brigham, Boston, MA, United States
- Ariadne Labs, Boston, MA, United States
- Harvard Medical School, Boston, MA, United States
- The Broad Institute, Boston, MA, United States
| | - Marie-Claude Vohl
- Centre Nutrition, Santé et Société (NUTRISS), Institut sur la Nutrition et les Aliments Fonctionnels (INAF), Université Laval, Québec City, QC, Canada
- School of Nutrition, Université Laval, Québec City, QC, Canada
- *Correspondence: Marie-Claude Vohl
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9
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Horne JR, Nielsen DE, Madill J, Robitaille J, Vohl MC, Mutch DM. Guiding Global Best Practice in Personalized Nutrition Based on Genetics: The Development of a Nutrigenomics Care Map. J Acad Nutr Diet 2021; 122:259-269. [PMID: 33744236 DOI: 10.1016/j.jand.2021.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 01/29/2021] [Accepted: 02/05/2021] [Indexed: 12/13/2022]
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10
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Horne JR. Strengthening the Reporting of Nutritional Genomics Research to Inform Knowledge Translation in Personalized Nutrition. Lifestyle Genom 2021; 14:43-48. [PMID: 33477140 DOI: 10.1159/000512544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 10/23/2020] [Indexed: 11/19/2022] Open
Abstract
The ultimate goal of researching nutrigenetic interactions is to be able to provide individuals with genetically-tailored nutrition advice (when evidence is sufficient) in an effort to optimize health outcomes. Accordingly, original research often discusses the potential for the results to inform genetically-tailored nutrition advice. Despite this, many studies do not report their methods, results, and discussion in a manner that is conducive to knowledge translation. With several consumer nutritional genomics companies now offering genetic testing for personalized nutrition, proper reporting of nutritional genomics research for knowledge translation is of vital importance. Common reporting errors relate to SNP and genotype reporting, results lacking detail, consideration of linkage disequilibrium, mechanisms of action/functional SNPs, details of dietary intake, and sample reporting. Because of this, knowledge translation professionals may be unable or challenged in their attempt to use the findings from such research to inform clinical practice in nutritional genomics and personalized nutrition. The present article provides an overview of the issues at hand. It further pre-sents a checklist as well as table and figure templates for researchers to use when reporting the results of original research in nutritional genomics to inform knowledge translation.
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Affiliation(s)
- Justine R Horne
- Centre nutrition, santé et société (NUTRISS) - Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Quebec City, Québec, Canada,
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11
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Picklo M, Vallée Marcotte B, Bukowski M, de Toro-Martín J, Rust BM, Guénard F, Vohl MC. Identification of Phenotypic Lipidomic Signatures in Response to Long Chain n-3 Polyunsaturated Fatty Acid Supplementation in Humans. J Am Heart Assoc 2021; 10:e018126. [PMID: 33461307 PMCID: PMC7955441 DOI: 10.1161/jaha.120.018126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Background Supplementation with long chain n‐3 polyunsaturated fatty acids is used to reduce total circulating triacylglycerol (TAG) concentrations. However, in about 30% of people, supplementation with long chain n‐3 polyunsaturated fatty acids does not result in decreased plasma TAG. Lipidomic analysis may provide insight into this inter‐individual variability. Methods Lipidomic analyses using targeted, mass spectrometry were performed on plasma samples obtained from a clinical study in which participants were supplemented with 3 g/day of long chain n‐3 in the form of fish oil capsules over a 6‐week period. TAG species and cholesteryl esters (CE) were quantified for 130 participants pre‐ and post‐supplementation. Participants were segregated into 3 potential responder phenotypes: (1) positive responder (Rpos; TAG decrease), (2) non‐responder (Rnon; lacking TAG change), and (3) negative responder (Rneg; TAG increase) representing 67%, 18%, and 15% of the study participants, respectively. Separation of the 3 phenotypes was attributed to differential responses in TAG with 50 to 54 carbons with 1 to 4 desaturations. Elevated TAG with higher carbon number and desaturation were common to all phenotypes following supplementation. Using the TAG responder phenotype for grouping, decreases in total CE and specific CE occurred in the Rpos phenotype versus the Rneg phenotype with intermediate responses in the Rnon phenotype. CE 20:5, containing eicosapentaenoic acid (20:5n‐3), was elevated in all phenotypes. A classifier combining lipidomic and genomic features was built to discriminate triacylglycerol response phenotypes and reached a high predictive performance with a balanced accuracy of 75%. Conclusions These data identify lipidomic signatures, TAG and CE, associated with long chain n‐3 response p henotypes and identify a novel phenotype based upon CE changes. Registration URL: https://www.ClinicalTrials.gov; Unique Identifier: NCT01343342.
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Affiliation(s)
- Matthew Picklo
- USDA-ARS Grand Forks Human Nutrition Research Center Grand Forks ND
| | - Bastien Vallée Marcotte
- Centre Nutrition Santé et Société (NUTRISS) Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Université Laval Québec City QC Canada
| | - Michael Bukowski
- USDA-ARS Grand Forks Human Nutrition Research Center Grand Forks ND
| | - Juan de Toro-Martín
- Centre Nutrition Santé et Société (NUTRISS) Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Université Laval Québec City QC Canada
| | - Bret M Rust
- USDA-ARS Grand Forks Human Nutrition Research Center Grand Forks ND
| | - Frédéric Guénard
- Centre Nutrition Santé et Société (NUTRISS) Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Université Laval Québec City QC Canada
| | - Marie-Claude Vohl
- Centre Nutrition Santé et Société (NUTRISS) Institut sur la Nutrition et les Aliments Fonctionnels (INAF) Université Laval Québec City QC Canada
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12
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Gkouskou KK, Grammatikopoulou MG, Vlastos I, Sanoudou D, Eliopoulos AG. Genotype-guided dietary supplementation in precision nutrition. Nutr Rev 2020; 79:1225-1235. [PMID: 33367884 DOI: 10.1093/nutrit/nuaa132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Achieving adequate micronutrient status, while avoiding deficiencies, represents a challenge for people globally. Consequently, many individuals resort to oral nutrient supplementation (ONS) in order to correct suboptimal dietary intakes. Advances in the fields of nutrigenetics and nutritional genomics have identified differences in response to micronutrient supplementation according to genetic makeup, adding dietary supplement use to the clinician's toolkit in the precision nutrition era. This review focuses on published evidence linking genetic variants to the responses associated with some of the most popular dietary supplements. With an increasing number of health professionals becoming involved in the prescription of ONS, identifying and matching individuals to the appropriate dietary supplement according to their genotype is important for achieving optimal health benefits and micronutrient equilibrium, while reducing the adverse events and financial costs often associated with excessive ONS.
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Affiliation(s)
- Kalliopi K Gkouskou
- Department of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Embiodiagnostics, Biology Research Company, Heraklion, Crete, Greece
| | - Maria G Grammatikopoulou
- Department of Nutritional Sciences and Dietetics, Faculty of Health Sciences, International Hellenic University, Thessaloniki, Greece
| | - Ioannis Vlastos
- Department of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Despina Sanoudou
- Clinical Genomics and Pharmacogenomics Unit, 4th Department of Internal Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Center for New Biotechnologies and Precision Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Aristides G Eliopoulos
- Department of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Center for New Biotechnologies and Precision Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
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13
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Barrea L, Annunziata G, Bordoni L, Muscogiuri G, Colao A, Savastano S. Nutrigenetics-personalized nutrition in obesity and cardiovascular diseases. INTERNATIONAL JOURNAL OF OBESITY SUPPLEMENTS 2020; 10:1-13. [PMID: 32714508 PMCID: PMC7371677 DOI: 10.1038/s41367-020-0014-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Epidemiological data support the view that both obesity and cardiovascular diseases (CVD) account for a high proportion of total morbidity and mortality in adults throughout the world. Obesity and CVD have complex interplay mechanisms of genetic and environmental factors, including diet. Nutrition is an environmental factor and it has a predominant and recognizable role in health management and in the prevention of obesity and obesity-related diseases, including CVD. However, there is a marked variation in CVD in patients with obesity and the same dietary pattern. The different genetic polymorphisms could explain this variation, which leads to the emergence of the concept of nutrigenetics. Nutritional genomics or nutrigenetics is the science that studies and characterizes gene variants associated with differential response to specific nutrients and relating this variation to various diseases, such as CVD related to obesity. Thus, the personalized nutrition recommendations, based on the knowledge of an individual's genetic background, might improve the outcomes of a specific dietary intervention and represent a new dietary approach to improve health, reducing obesity and CVD. Given these premises, it is intuitive to suppose that the elucidation of diet and gene interactions could support more specific and effective dietary interventions in both obesity and CVD prevention through personalized nutrition based on nutrigenetics. This review aims to briefly summarize the role of the most important genes associated with obesity and CVD and to clarify the knowledge about the relation between nutrition and gene expression and the role of the main nutrition-related genes in obesity and CVD.
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Affiliation(s)
- Luigi Barrea
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Giuseppe Annunziata
- Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy
| | - Laura Bordoni
- Unit of Molecular Biology, School of Pharmacy, University of Camerino, 62032 Camerino, Macerata Italy
| | - Giovanna Muscogiuri
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - Silvia Savastano
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
| | - on behalf of Obesity Programs of nutrition, Education, Research and Assessment (OPERA) Group
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Via Sergio Pansini 5, 80131 Naples, Italy
- Department of Pharmacy, University of Naples “Federico II”, Via Domenico Montesano 49, 80131 Naples, Italy
- Unit of Molecular Biology, School of Pharmacy, University of Camerino, 62032 Camerino, Macerata Italy
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14
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Vallée Marcotte B, Allaire J, Guénard F, de Toro-Martín J, Couture P, Lamarche B, Vohl MC. Genetic risk prediction of the plasma triglyceride response to independent supplementations with eicosapentaenoic and docosahexaenoic acids: the ComparED Study. GENES AND NUTRITION 2020; 15:10. [PMID: 32539794 PMCID: PMC7294612 DOI: 10.1186/s12263-020-00669-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 05/20/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND We previously built a genetic risk score (GRS) highly predictive of the plasma triglyceride (TG) response to an omega-3 fatty acid (n-3 FA) supplementation from marine sources. The objective of the present study was to test the potential of this GRS to predict the plasma TG responsiveness to supplementation with either eicosapentaenoic (EPA) or docosahexaenoic (DHA) acids in the Comparing EPA to DHA (ComparED) Study. METHODS The ComparED Study is a double-blind, controlled, crossover trial, with participants randomized to three supplemented phases of 10 weeks each: (1) 2.7 g/day of DHA, (2) 2.7 g/day of EPA, and (3) 3 g/day of corn oil (control), separated by 9-week washouts. The 31 SNPs used to build the previous GRS were genotyped in 122 participants of the ComparED Study using TaqMan technology. The GRS for each participant was computed by summing the number of rare alleles. Ordinal and binary logistic models, adjusted for age, sex, and body mass index, were used to calculate the ability of the GRS to predict TG responsiveness. RESULTS The GRS predicted TG responsiveness to EPA supplementation (p = 0.006), and a trend was observed for DHA supplementation (p = 0.08). The exclusion of participants with neutral TG responsiveness clarified the association patterns and the predictive capability of the GRS (EPA, p = 0.0003, DHA p = 0.01). CONCLUSION Results of the present study suggest that the constructed GRS is a good predictor of the plasma TG response to supplementation with either DHA or EPA. TRIAL REGISTRATION ClinicalTrials.gov, NCT01810003. The study protocol was registered on March 4, 2013.
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Affiliation(s)
- Bastien Vallée Marcotte
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada
| | - Janie Allaire
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada
| | - Frédéric Guénard
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada
| | - Juan de Toro-Martín
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada
| | - Patrick Couture
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada.,CHU de Québec Research Center-Endocrinology and Nephrology, Quebec City, Quebec, Canada
| | - Benoît Lamarche
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada
| | - Marie-Claude Vohl
- Centre Nutrition, Santé et Société-Institut sur la nutrition et les aliments fonctionnels (Institute of Nutrition and Functional Foods (INAF)), Université Laval, 2440 Hochelaga Blvd., Quebec City, Quebec, Canada.
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15
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Omega-3 PUFA Responders and Non-Responders and the Prevention of Lipid Dysmetabolism and Related Diseases. Nutrients 2020; 12:nu12051363. [PMID: 32397619 PMCID: PMC7284582 DOI: 10.3390/nu12051363] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/01/2020] [Accepted: 05/07/2020] [Indexed: 02/07/2023] Open
Abstract
The long-chain omega-3 polyunsaturated fatty acids (LC-omega-3 PUFAs) eicosapentaenoic acid and docosahexaenoic acid are the most popular dietary supplements recommended for the prevention/management of lipid dysmetabolisms and related diseases. However, remarkable inconsistencies exist among the outcomes of the human intervention studies in this field, which contrast with the impressive homogeneity of positive results of most of the preclinical studies. In the present review, we will firstly examine a series of factors-such as background diet composition, gut microbiota and genetic/epigenetic variants, which may lie beneath these inconsistencies. Moreover, we will discuss the recent advance in the knowledge of possible specific biomarkers (genetic-, epigenetic- and microbiota-related) that are being investigated with the goal to apply them in a personalized supplementation with omega-3 PUFAs. We will also consider the possibility of using already available parameters (Omega-3 index, Omega-6 PUFA/Omega-3 PUFA ratio) able to predict the individual responsiveness to these fatty acids and will discuss the optimal timing for their use. Finally, we will critically examine the results of those human studies that have already adopted the distinction of the subjects into omega-3 PUFA responders and non-responders and will discuss the advantage of using such an approach.
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16
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Franck M, de Toro-Martín J, Guénard F, Rudkowska I, Lemieux S, Lamarche B, Couture P, Vohl MC. Prevention of Potential Adverse Metabolic Effects of a Supplementation with Omega-3 Fatty Acids Using a Genetic Score Approach. Lifestyle Genom 2019; 13:32-42. [PMID: 31779001 DOI: 10.1159/000504022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/07/2019] [Indexed: 01/25/2023] Open
Abstract
INTRODUCTION The consumption of long-chain omega-3 polyunsaturated fatty acids (n-3 PUFA) has been reported to have beneficial health effects, notably, by reducing plasma triglyceride levels. Nonetheless, a concomitant decrease in insulin sensitivity has also been observed, but is highly variable among subjects. Herein, we aimed to determine the importance of the genetic background in the interindividual variability of the insulin sensitivity response following an n-3 PUFA supplementation. METHODS A total of 210 participants completed a 6-week n-3 PUFA supplementation with 5 g/day of fish oil (providing 1.9-2.2 g of eicosapentaenoic acid + 1.1 g of docosahexaenoic acid). Insulin resistance was estimated by the homeostatic model assessment (HOMA-IR), and participants were further classified as high-risk or low-risk depending on their HOMA-IR change following the n-3 PUFA supplementation, as compared to pre-supplementation values. Genome-wide genotyping data were obtained for 138 participants using HumanOmni-5-Quad BeadChips containing 4,301,331 single nucleotide polymorphisms. A genome-wide association analysis (GWAS) was carried out between high-risk and low-risk participants. The population study was split into training (60%) and testing (40%) datasets to assess the predictive accuracy of a genetic risk score (GRS) constructed by summing the number of risk alleles. RESULTS Following the n-3 PUFA supplementation, 32 participants had increased HOMA-IR as compared to initial values and were classified as high risk (23.2%), whereas remaining subjects were classified as low risk (n = 106, 76.8%). A total of 8 loci had frequency differences between high-risk and low-risk participants at a suggestive GWAS association threshold (p value <1 × 10-5). After applying 10-fold cross validation, the GRS showed a significant association with the risk of increased HOMA-IR in the testing dataset (OR = 3.16 [95% CI, 1.85-7.14]), with a predictive accuracy of 0.85, and explained 40% of variation in HOMA-IR change. CONCLUSIONS These results suggest that the genetic background has a relevant role in the interindividual variability observed in the insulin sensitivity response following an n-3 PUFA supplementation. Subjects being at risk of insulin sensitivity lowering following an n-3 PUFA supplementation may be identified using genetic-based precision nutrition approaches.
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Affiliation(s)
- Maximilien Franck
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,School of Nutrition, Laval University, Quebec City, Québec, Canada
| | - Juan de Toro-Martín
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,School of Nutrition, Laval University, Quebec City, Québec, Canada
| | - Frédéric Guénard
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,School of Nutrition, Laval University, Quebec City, Québec, Canada
| | - Iwona Rudkowska
- Department of Kinesiology, Laval University, Quebec City, Québec, Canada.,Endocrinology and Nephrology Unit, CHU de Quebec Research Center, Quebec City, Québec, Canada
| | - Simone Lemieux
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,School of Nutrition, Laval University, Quebec City, Québec, Canada
| | - Benoît Lamarche
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,School of Nutrition, Laval University, Quebec City, Québec, Canada
| | - Patrick Couture
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada.,Endocrinology and Nephrology Unit, CHU de Quebec Research Center, Quebec City, Québec, Canada
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods (INAF), Laval University, Quebec City, Québec, Canada, .,School of Nutrition, Laval University, Quebec City, Québec, Canada,
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17
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Loos RJF. From nutrigenomics to personalizing diets: are we ready for precision medicine? Am J Clin Nutr 2019; 109:1-2. [PMID: 30715122 PMCID: PMC6358032 DOI: 10.1093/ajcn/nqy364] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Ruth J F Loos
- Department of Environmental Medicine and Public Health, The Charles Bronfman Institute for Personalized Medicine, and The Mindich Child Health and Development Institute, The Icahn School of Medicine at Mount Sinai, New York City, NY
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