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Hill EB, Reisdorph RM, Rasolofomanana-Rajery S, Michel C, Khajeh-Sharafabadi M, Doenges KA, Weaver N, Quinn K, Sutliff AK, Tang M, Borengasser SJ, Frank DN, O'Connor LE, Campbell WW, Krebs NF, Hendricks AE, Reisdorph NA. Salmon Food-Specific Compounds and Their Metabolites Increase in Human Plasma and Are Associated with Cardiometabolic Health Indicators Following a Mediterranean-Style Diet Intervention. J Nutr 2024; 154:26-40. [PMID: 37918675 PMCID: PMC10808825 DOI: 10.1016/j.tjnut.2023.10.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/25/2023] [Accepted: 10/19/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Nutrimetabolomics allows for the comprehensive analysis of foods and human biospecimens to identify biomarkers of intake and begin to probe their associations with health. Salmon contains hundreds of compounds that may provide cardiometabolic benefits. OBJECTIVES We used untargeted metabolomics to identify salmon food-specific compounds (FSCs) and their predicted metabolites that were found in plasma after a salmon-containing Mediterranean-style (MED) diet intervention. Associations between changes in salmon FSCs and changes in cardiometabolic health indicators (CHIs) were also explored. METHODS For this secondary analysis of a randomized, crossover, controlled feeding trial, 41 participants consumed MED diets with 2 servings of salmon per week for 2 5-wk periods. CHIs were assessed, and fasting plasma was collected pre- and postintervention. Plasma, salmon, and 99 MED foods were analyzed using liquid chromatography-mass spectrometry-based metabolomics. Compounds were characterized as salmon FSCs if detected in all salmon replicates but none of the other foods. Metabolites of salmon FSCs were predicted using machine learning. For salmon FSCs and metabolites found in plasma, linear mixed-effect models were used to assess change from pre- to postintervention and associations with changes in CHIs. RESULTS Relative to the other 99 MED foods, there were 508 salmon FSCs with 237 unique metabolites. A total of 143 salmon FSCs and 106 metabolites were detected in plasma. Forty-eight salmon FSCs and 30 metabolites increased after the intervention (false discovery rate <0.05). Increases in 2 annotated salmon FSCs and 2 metabolites were associated with improvements in CHIs, including total cholesterol, low-density lipoprotein cholesterol, triglycerides, and apolipoprotein B. CONCLUSIONS A data-driven nutrimetabolomics strategy identified salmon FSCs and their predicted metabolites that were detectable in plasma and changed after consumption of a salmon-containing MED diet. Findings support this approach for the discovery of compounds in foods that may serve, upon further validation, as biomarkers or act as bioactive components influential to health. The trials supporting this work were registered at NCT02573129 (Mediterranean-style diet intervention) and NCT05500976 (ongoing clinical trial).
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Affiliation(s)
- Emily B Hill
- Department of Pediatrics, Section of Nutrition, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Richard M Reisdorph
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Sakaiza Rasolofomanana-Rajery
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, CO, United States; Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Cole Michel
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Mobin Khajeh-Sharafabadi
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, CO, United States
| | - Katrina A Doenges
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Nicholas Weaver
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, CO, United States
| | - Kevin Quinn
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Aimee K Sutliff
- Department of Pediatrics, Section of Nutrition, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Minghua Tang
- Department of Pediatrics, Section of Nutrition, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Sarah J Borengasser
- Department of Pediatrics, Section of Nutrition, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Daniel N Frank
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Lauren E O'Connor
- USDA, Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Components and Health Laboratory, Beltsville, MD, United States
| | - Wayne W Campbell
- Department of Nutrition Science, Purdue University, West Lafayette, IN, United States
| | - Nancy F Krebs
- Department of Pediatrics, Section of Nutrition, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Audrey E Hendricks
- Department of Mathematical and Statistical Sciences, University of Colorado Denver, Denver, CO, United States; Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
| | - Nichole A Reisdorph
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
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McMullan JE, Yeates AJ, Allsopp PJ, Mulhern MS, Strain JJ, van Wijngaarden E, Myers GJ, Shroff E, Shamlaye CF, McSorley EM. Fish consumption and its lipid modifying effects - A review of intervention studies. Neurotoxicology 2023; 99:82-96. [PMID: 37820771 DOI: 10.1016/j.neuro.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/22/2023] [Accepted: 10/04/2023] [Indexed: 10/13/2023]
Abstract
Fish is an important source of nutrients, particularly the long chain n-3 polyunsaturated fatty acids (n-3 PUFAs). The incorporation of fish into the diet has been shown to have several health benefits, including lowering the risk of cardiovascular disease (CVD). Elevated plasma lipids are one of the main modifiable risk factors contributing to CVD and may be partly mediated by n-3 PUFAs. Although n-3 PUFAs in the form of supplementation have been shown to exert lipid modifying effects, the effects of fish consumption on the lipid profile have not been well summarised to date. Therefore, the aim of the present review is to discuss the current evidence from intervention studies investigating the effect of fish consumption on the lipid profile in both apparently healthy and non-healthy populations. Existing evidence appears to support the role of fish in promoting a shift towards a less inflammatory lipid profile through raising n-3 PUFAs and potentially lowering n-6 PUFA and triglyceride concentrations in both healthy and non-healthy populations. Fish consumption has a negligible effect on cholesterol concentrations; however, fish consumption may promote a small increase in high density lipoprotein (HDL) cholesterol amongst people with lower HDL at baseline. Limited studies have shown fish consumption to result in shifts in phospholipid and sphingolipid species and structure, albeit it is not yet clear whether these alterations have any meaningful impact on CVD risk. Future well-designed studies that utilise NMR and/or lipidomics analysis are warranted to explore the effects of these shifts in lipid content and structure in the context of disease development. Public health guidance should emphasise the cardioprotective benefits of fish and encourage consumption particularly in the Global North where fish consumption remains low.
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Affiliation(s)
- James E McMullan
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Alison J Yeates
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Philip J Allsopp
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Maria S Mulhern
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - J J Strain
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK
| | - Edwin van Wijngaarden
- School of Medicine and Dentistry, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Gary J Myers
- School of Medicine and Dentistry, University of Rochester, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Emelyn Shroff
- The Ministry of Health, Mahé, Republic of Seychelles
| | | | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, Northern Ireland, UK.
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O’Keeffe M, Oterhals Å, Vikøren LAS, Drotningsvik A, Mellgren G, Halstensen A, Gudbrandsen OA. Dietary fish intake increased the concentration of soluble ACE2 in rats: can fish consumption reduce the risk of COVID-19 infection through interception of SARS-CoV-2 by soluble ACE2? Br J Nutr 2023; 130:1712-1719. [PMID: 36946006 PMCID: PMC10587383 DOI: 10.1017/s0007114523000776] [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: 08/11/2022] [Revised: 03/08/2023] [Accepted: 03/16/2023] [Indexed: 03/23/2023]
Abstract
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) enters the cells after binding to the membrane-bound receptor angiotensin-converting enzyme 2 (ACE2), but this may be prevented through interception by soluble ACE2 (sACE2) or by inhibition of the ACE2 receptor, thus obstructing cell entry and replication. The main objective of this study was to investigate if fish intake affected the concentration of sACE2 in rats. The secondary aim was to evaluate the in vitro ACE2-inhibiting activity of fish proteins. Rats were fed cod muscle as 25 % of dietary protein, and blood was collected after 4 weeks of intervention. Muscle, backbone, skin, head, stomach, stomach content, intestine and swim bladder from haddock, saithe, cod and redfish were hydrolysed with trypsin before ACE2-inhibiting activity was measured in vitro. In vivo data were compared using unpaired Student's t test, and in vitro data were compared using one-way ANOVA followed by the Tukey HSD post hoc test. The mean sACE2 concentration was 47 % higher in rats fed cod when compared with control rats (P 0·034), whereas serum concentrations of angiotensin II and TNF-α were similar between the two experimental groups. Muscle, backbone, skin and head from all four fish species inhibited ACE2 activity in vitro, whereas the remaining fractions had no effect. To conclude, our novel data demonstrate that fish intake increased the sACE2 concentration in rats and that the hydrolysed fish proteins inhibited ACE2 activity in vitro.
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Affiliation(s)
- Maria O’Keeffe
- Dietary Protein Research Group, Centre for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen5021, Norway
| | | | - Linn Anja Slåke Vikøren
- Dietary Protein Research Group, Centre for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen5021, Norway
| | - Aslaug Drotningsvik
- Dietary Protein Research Group, Centre for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen5021, Norway
| | - Gunnar Mellgren
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, Bergen5021, Norway
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen5021, Norway
| | - Alfred Halstensen
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
- K. Halstensen AS, P.O. Box 103, Bekkjarvik5399, Norway
| | - Oddrun Anita Gudbrandsen
- Dietary Protein Research Group, Centre for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen5021, Norway
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4
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Montserrat-de la Paz S, Del Carmen Naranjo M, Lopez S, Del Carmen Millan-Linares M, Rivas-Dominguez A, Jaramillo-Carmona SM, Abia R, Muriana FJG, Bermudez B. Immediate-release niacin and a monounsaturated fatty acid-rich meal on postprandial inflammation and monocyte characteristics in men with metabolic syndrome. Clin Nutr 2023; 42:2138-2150. [PMID: 37774650 DOI: 10.1016/j.clnu.2023.08.017] [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: 01/23/2023] [Revised: 08/15/2023] [Accepted: 08/18/2023] [Indexed: 10/01/2023]
Abstract
BACKGROUND & AIM When considered separately, long-term immediate-release niacin and fatty meals enriched in monounsaturated fatty acids (MUFA) decrease postprandial triglycerides, but their effects on postprandial inflammation, which is common in individuals with metabolic syndrome, are less known. Moreover, successful combination is lacking and its impact on acute disorders of the innate immune cells in the metabolic syndrome remains unclear. Here, we aimed to establish the effects from combination with niacin of different fats [butter, enriched in saturated fatty acids (SFA), olive oil, enriched in MUFA, and olive oil supplemented with eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids] on plasma inflammatory markers and circulating monocyte subsets, activation and priming at the postprandial period in individuals with metabolic syndrome. METHODS A random-order within-subject crossover experiment was performed, in which 16 individuals with metabolic syndrome and 16 age-matched healthy volunteers took 2 g immediate-release niacin together with the corresponding fatty meal or a meal with no fat as control. In total, 128 postprandial curves were analysed. We sampled hourly over 6 h for plasma concentrations of soluble inflammatory markers and triglycerides. Circulating monocyte subsets (CD14/CD16 balance), activation (CCL2/CCR2 axis) and priming (M1/M2-like phenotype) at the time of postprandial hypertriglyceridemic peak were also addressed. RESULTS Dietary SFA (combined with niacin) promote postprandial excursions of circulating IL-6, IL-1β, TNF-α and CD14/CCR2-rich monocytes with a pro-inflammatory M1-like phenotype, particularly in individuals with metabolic syndrome. In contrast, dietary MUFA (combined with niacin) postprandially increased circulating CD16-rich monocytes with an anti-inflammatory M2-like phenotype. Omega-3 PUFA did not add to the effects of MUFA. CONCLUSION The co-administration of a single-dose of immediate-release niacin with a fatty meal rich in MUFA, in contrast to SFA, suppresses postprandial inflammation at the levels of both secretory profile and monocyte response in individuals with metabolic syndrome. These findings highlight a potential role of combining niacin and dietary MUFA for the homeostatic control of inflammation and the innate immune system, identifying a new search direction for the management of disorders associated with the metabolic syndrome.
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Affiliation(s)
- Sergio Montserrat-de la Paz
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain; Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain
| | - Maria Del Carmen Naranjo
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain
| | - Sergio Lopez
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain; Department of Cell Biology, Faculty of Biology, University of Seville, 41012 Seville, Spain; Instituto de Biomedicina de Sevilla (IBiS/CSIC), Hospital Universitario Virgen del Rocio, University of Seville, 41013 Seville, Spain
| | - Maria Del Carmen Millan-Linares
- Department of Medical Biochemistry, Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; Cell Biology Unit, Instituto de la Grasa, CSIC, 41013 Seville, Spain
| | | | | | - Rocio Abia
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain
| | - Francisco J G Muriana
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain
| | - Beatriz Bermudez
- Laboratory of Cellular and Molecular Nutrition, Instituto de la Grasa, CSIC, 41013 Seville, Spain; Department of Cell Biology, Faculty of Biology, University of Seville, 41012 Seville, Spain.
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5
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Hagen IV, Helland A, Bratlie M, Midttun Ø, McCann A, Ulvik A, Mellgren G, Ueland PM, Gudbrandsen OA. Serum concentrations of amino acids and tryptophan metabolites are affected by consumption of a light breakfast: a clinical intervention study in adults with overweight or obesity. BMC Nutr 2023; 9:10. [PMID: 36631895 PMCID: PMC9832616 DOI: 10.1186/s40795-022-00661-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 12/26/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Epidemiological studies often investigate amino acids and their metabolites as biomarkers, but do not always consistently use fasting or non-fasting blood samples, or may lack information on the prandial status of the study participants. Since little information is available on the effects of the prandial status on many biomarkers, and since blood is typically sampled early in the day with participants in a fasting state or after having consumed a light meal in many trials, the main purpose of this study was to investigate the short-term effects of a light breakfast on serum concentrations of amino acids and related metabolites. METHODS Blood was collected from sixty-three healthy adults (36 women) in the fasting state and at set times for 120 min after intake of a light breakfast with low protein content (14 g protein, 2218 kJ). Relative changes in serum biomarker concentrations from fasting to postprandial serum concentrations were tested using T test. RESULTS The serum concentrations of 13 of the 20 measured amino acids were significantly changed 60 min following breakfast intake, with the most marked effects seen as increases in alanine (34%) and proline (45%) concentrations. The response did not reflect the amino acid composition of the breakfast. The concentrations of seven kynurenine metabolites were significantly decreased after breakfast. CONCLUSION Consumption of a light breakfast affected serum concentrations of several amino acids and related metabolites, underlining the importance of having information regarding the participants' prandial state at the time of blood sampling in studies including these biomarkers. TRIAL REGISTRATION This trial was registered at clinicaltrials.gov as NCT02350595 (registered January 2015).
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Affiliation(s)
- Ingrid V. Hagen
- grid.7914.b0000 0004 1936 7443Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
| | - Anita Helland
- grid.7914.b0000 0004 1936 7443Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
| | - Marianne Bratlie
- grid.7914.b0000 0004 1936 7443Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
| | - Øivind Midttun
- grid.457562.7Bevital AS, Jonas Lies Veg 87, 5021 Bergen, Norway
| | - Adrian McCann
- grid.457562.7Bevital AS, Jonas Lies Veg 87, 5021 Bergen, Norway
| | - Arve Ulvik
- grid.457562.7Bevital AS, Jonas Lies Veg 87, 5021 Bergen, Norway
| | - Gunnar Mellgren
- grid.7914.b0000 0004 1936 7443Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, Haukeland University Hospital, 5021 Bergen, Norway ,grid.412008.f0000 0000 9753 1393Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Per M. Ueland
- grid.457562.7Bevital AS, Jonas Lies Veg 87, 5021 Bergen, Norway
| | - Oddrun A. Gudbrandsen
- grid.7914.b0000 0004 1936 7443Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
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Santos HO, May TL, Bueno AA. Eating more sardines instead of fish oil supplementation: Beyond omega-3 polyunsaturated fatty acids, a matrix of nutrients with cardiovascular benefits. Front Nutr 2023; 10:1107475. [PMID: 37143475 PMCID: PMC10153001 DOI: 10.3389/fnut.2023.1107475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 03/27/2023] [Indexed: 05/06/2023] Open
Abstract
Omega-3 polyunsaturated fatty acids (n-3 PUFA) play a significant role in the prevention and management of cardiometabolic diseases associated with a mild chronic pro-inflammatory background, including type 2 diabetes, hypertension, hypertriglyceridaemia, and fatty liver disease. The effects of n-3 PUFA supplements specifically, remain controversial regarding reducing risks of cardiovascular events. n-3 PUFA supplements come at a cost for the consumer and can result in polypharmacy for patients on pharmacotherapy. Sardines are a well-known, inexpensive source of n-3 PUFA and their consumption could reduce the need for n-3 PUFA supplementation. Moreover, sardines contain other cardioprotective nutrients, although further insights are crucial to translate a recommendation for sardine consumption into clinical practice. The present review discusses the matrix of nutrients contained in sardines which confer health benefits for cardiometabolism, beyond n-3 PUFA. Sardines contain calcium, potassium, magnesium, zinc, iron, taurine, arginine and other nutrients which together modulate mild inflammation and exacerbated oxidative stress observed in cardiovascular disease and in haemodynamic dysfunction. In a common serving of sardines, calcium, potassium, and magnesium are the minerals at higher amounts to elicit clinical benefits, whilst other nutrients are present in lower but valuable amounts. A pragmatic approach towards the consumption of such nutrients in the clinical scenario should be adopted to consider the dose-response relationship effects on physiological interactions. As most recommendations currently available are based on an indirect rationale of the physiological actions of the nutrients found in sardines, randomised clinical trials are warranted to expand the evidence on the benefits of sardine consumption.
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Affiliation(s)
- Heitor O. Santos
- School of Medicine, Federal University of Uberlandia (UFU), Uberlandia, Minas Gerais, Brazil
- *Correspondence: Heitor O. Santos,
| | - Theresa L. May
- School of Science and the Environment, University of Worcester, Worcester, United Kingdom
| | - Allain A. Bueno
- School of Science and the Environment, University of Worcester, Worcester, United Kingdom
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Helland A, Bratlie M, Hagen IV, Midttun Ø, Ulvik A, Mellgren G, Ueland PM, Gudbrandsen OA. Consumption of a light meal affects serum concentrations of one-carbon metabolites and B-vitamins. A clinical intervention study. Br J Nutr 2022; 129:1-10. [PMID: 35899805 PMCID: PMC10024976 DOI: 10.1017/s0007114522002446] [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: 02/16/2022] [Revised: 07/18/2022] [Accepted: 07/22/2022] [Indexed: 11/07/2022]
Abstract
The transfer of one-carbon units between molecules in metabolic pathways is essential for maintaining cellular homeostasis, but little is known about whether the circulating concentrations of metabolites involved in the one-carbon metabolism are affected by the prandial status. Epidemiological studies do not always consistently use fasting or non-fasting blood samples or may lack information on the prandial status of the study participants. Therefore, the main aim of the present study was to investigate the effects of a light breakfast on serum concentrations of selected metabolites and B-vitamins related to the one-carbon metabolism; i.e. the methionine-homocysteine cycle, the folate cycle, the choline oxidation pathway and the transsulfuration pathway. Sixty-three healthy adults (thirty-six women) with BMI ≥ 27 kg/m2 were included in the study. Blood was collected in the fasting state and 60 and 120 min after intake of a standardised breakfast consisting of white bread, margarine, white cheese, strawberry jam and orange juice (2218 kJ). The meal contained low amounts of choline, betaine, serine and vitamins B2, B3, B6, B9 and B12. Serum concentrations of total homocysteine, total cysteine, flavin mononucleotide, nicotinamide and pyridoxal 5'-phosphate were significantly decreased, and concentrations of choline, betaine, dimethylglycine, sarcosine, cystathionine and folate were significantly increased following breakfast intake (P < 0·05). Our findings demonstrate that the intake of a light breakfast with low nutrient content affected serum concentrations of several metabolites and B-vitamins related to the one-carbon metabolism.
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Affiliation(s)
- Anita Helland
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, Bergen, 5021, Norway
| | - Marianne Bratlie
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, Bergen, 5021, Norway
| | - Ingrid V. Hagen
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, Bergen, 5021, Norway
| | | | - Arve Ulvik
- Bevital AS, Jonas Lies Veg 87, Bergen, Norway
| | - Gunnar Mellgren
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
- Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway
| | | | - Oddrun A. Gudbrandsen
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, Bergen, 5021, Norway
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Abachi Hokmabadinazhad S, Songpadith JP, Houde VP, Pilon G, Fliss I, Marette A, Bazinet L, Beaulieu L. Bioactivity of mackerel peptides on obesity and insulin resistance, an in-vivo study. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101641] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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9
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No effect of salmon fish protein on 2-h glucose in adults with increased risk of type 2 diabetes: a randomised controlled trial. Br J Nutr 2021; 126:1304-1313. [PMID: 33413727 DOI: 10.1017/s0007114521000040] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The association between fish consumption and decreased risk of CVD is well documented. However, studies on health effects of fish consumption suggest that other components than n-3 PUFA have beneficial cardiometabolic effects, including effects on glucose metabolism. The aim of the present study was to investigate effects of salmon fish protein on cardiometabolic risk markers in a double-blind, randomised controlled parallel trial. We hypothesised that daily intake of a salmon fish protein supplement for 8 weeks would improve glucose tolerance in persons with increased risk of type 2 diabetes mellitus (T2DM). Our primary outcome measure was serum glucose (s-glucose) 2 h after a standardised oral glucose tolerance test. In total, eighty-eight adults with elevated s-glucose levels were randomised to 7·5 g of salmon fish protein/d or placebo, and seventy-four participants were included in the analysis. We found no significant effect of salmon fish protein supplementation on our primary outcome or other markers related to glucose tolerance, serum lipids, weight or blood pressure compared with placebo. The present study does not support the hypothesis that daily intake of a salmon fish protein supplement for 8 weeks improves glucose tolerance in persons with increased risk of T2DM.
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Vikøren LA, Drotningsvik A, Midttun Ø, McCann A, Bergseth MT, Austgulen MH, Mellgren G, Ueland PM, Gudbrandsen OA. Baked cod consumption delayed the development of kidney and liver dysfunction and affected plasma amino acid concentrations, but did not affect blood pressure, blood glucose or liver triacylglycerol concentrations in obese fa/fa Zucker rats. Nutr Res 2021; 92:72-83. [PMID: 34274556 DOI: 10.1016/j.nutres.2021.05.009] [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: 11/26/2020] [Revised: 05/13/2021] [Accepted: 05/23/2021] [Indexed: 10/21/2022]
Abstract
Obesity is associated with changes in amino acid metabolism, and studies show that ingestion of fish proteins influence amino acid composition in plasma and urine, in addition to affecting risk factors for metabolic syndrome. Since the majority of fish proteins consumed by humans are as fish fillet, it is of interest to investigate if cod fillet intake affects amino acid composition and metabolic disorders. We hypothesized that a modified AIN-93G diet containing cod fillet would affect amino acid compositions in plasma and urine in obese rats, and also affect risk factors for metabolic syndrome when compared to rats fed a regular AIN-93G diet with casein as the protein source. Obese Zucker fa/fa rats, a rat model of metabolic syndrome, received diets containing 25% protein from lyophilized baked cod fillet and 75% protein from casein (Baked cod diet), or a Control diet with casein for four weeks. The Baked cod diet affected the amino acid composition in plasma, with e.g., lower glycine, histidine, homoarginine, homocysteine, methionine, proline and tyrosine concentrations, but did not affect amino acid concentrations in urine. The concentrations of markers for kidney and liver dysfunction were lower in the Baked cod group, however blood pressure development, fasting and postprandial glucose, and hepatic triacylglycerol concentrations were similar to the Control group. To conclude, substituting 25% of dietary protein with baked cod fillet affected concentrations of some amino acids in plasma and delayed development of kidney and liver dysfunction, but did not affect blood pressure, glucose concentration or fatty liver.
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Affiliation(s)
- Linn A Vikøren
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
| | - Aslaug Drotningsvik
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
| | | | | | - Marthe T Bergseth
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway
| | - Maren H Austgulen
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway
| | - Gunnar Mellgren
- Mohn Nutrition Research Laboratory, Department of Clinical Science, University of Bergen, Haukeland University Hospital, 5020 Bergen, Norway; Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5021 Bergen, Norway
| | | | - Oddrun A Gudbrandsen
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway.
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11
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Bratlie M, Hagen IV, Helland A, Erchinger F, Midttun Ø, Ueland PM, Rosenlund G, Sveier H, Mellgren G, Hausken T, Gudbrandsen OA. Effects of high intake of cod or salmon on gut microbiota profile, faecal output and serum concentrations of lipids and bile acids in overweight adults: a randomised clinical trial. Eur J Nutr 2021; 60:2231-2248. [PMID: 33108521 PMCID: PMC8137623 DOI: 10.1007/s00394-020-02417-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/13/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE To explore whether high intake of cod or salmon would affect gut microbiota profile, faecal output and serum concentrations of lipids and bile acids. METHODS Seventy-six adults with overweight/obesity with no reported gastrointestinal disease were randomly assigned to consume 750 g/week of either cod or salmon, or to avoid fish intake (Control group) for 8 weeks. Fifteen participants from each group were randomly selected for 72 h faeces collection at baseline and end point for gut microbiota profile analyses using 54 bacterial DNA probes. Food intake was registered, and fasting serum and morning urine were collected at baseline and end point. RESULTS Sixty-five participants were included in serum and urine analyses, and gut microbiota profile was analysed for 33 participants. Principal component analysis of gut microbiota showed an almost complete separation of the Salmon group from the Control group, with lower counts for bacteria in the Bacteroidetes phylum and the Clostridiales order of the Firmicutes phyla, and higher counts for bacteria in the Selenomonadales order of the Firmicutes phylum. The Cod group showed greater similarity to the Salmon group than to the Control group. Intake of fibres, proteins, fats and carbohydrates, faecal daily mass and output of fat, cholesterol and total bile acids, and serum concentrations of cholesterol, triacylglycerols, non-esterified fatty acids and total bile acids were not altered in the experimental groups. CONCLUSION A high intake of cod or salmon fillet modulated gut microbiota but did not affect faecal output or serum concentrations of lipids and total bile acids. CLINICAL TRIAL REGISTRATION This trial was registered at clinicaltrials.gov as NCT02350595.
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Affiliation(s)
- Marianne Bratlie
- Dietary Protein Research Group, Department of Clinical Medicine, Haukeland University Hospital, University of Bergen, 5021, Bergen, Norway
| | - Ingrid V Hagen
- Dietary Protein Research Group, Department of Clinical Medicine, Haukeland University Hospital, University of Bergen, 5021, Bergen, Norway
| | - Anita Helland
- Dietary Protein Research Group, Department of Clinical Medicine, Haukeland University Hospital, University of Bergen, 5021, Bergen, Norway
| | | | | | | | - Grethe Rosenlund
- Skretting Aquaculture Research Centre AS, P.O. Box 48, 4001, Stavanger, Norway
| | - Harald Sveier
- Lerøy Seafood Group ASA, P.O. Box 7600, 5020, Bergen, Norway
| | - Gunnar Mellgren
- Mohn Nutrition Research Laboratory, Department of Clinical Science, Haukeland University Hospital, University of Bergen, 5021, Bergen, Norway
- Hormone Laboratory, Haukeland University Hospital, 5021, Bergen, Norway
| | - Trygve Hausken
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Section of Gastroenterology, Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Oddrun Anita Gudbrandsen
- Dietary Protein Research Group, Department of Clinical Medicine, Haukeland University Hospital, University of Bergen, 5021, Bergen, Norway.
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12
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Mitchell CM, Piaggi P, O’Brien DM, Krakoff J, Votruba SB. Metabolic Characterization of Meat, Fish, and Soda Intake in Males: Secondary Results from a Randomized Inpatient Pilot Study. Obesity (Silver Spring) 2021; 29:995-1002. [PMID: 33938613 PMCID: PMC9528993 DOI: 10.1002/oby.23167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/17/2021] [Accepted: 02/28/2021] [Indexed: 11/09/2022]
Abstract
OBJECTIVE This study aimed to evaluate whether a 12-week, weight-maintaining, macronutrient-stable dietary intervention that varies only by meat, fish, or soda consumption alters 24-hour energy expenditure (24hrEE) and substrate oxidation. METHODS Healthy males were recruited to participate in a 12-week inpatient study and were randomized to a weight-maintaining dietary intervention that contained varying combinations of meat (0% or 19%), fish (0% or 6%), or soda (0% or 14%) in a factorial design. Macronutrient composition across dietary intervention groups was as follows: 50% of energy from carbohydrates, 30% of energy from fat, and 20% of energy from protein. Whole-room indirect calorimetry at baseline and week 12 were used to measure 24hrEE and substrate oxidation. RESULTS Twenty-six males (mean [SEM], age: 46.6 [10.4] years; BMI: 26.9 [4.1] kg/m2 ) completed all measurements. Fish consumption resulted in higher 24hrEE by 126 (55) kcal/d compared with no fish consumption (P = 0.03), whereas 24hrEE for soda consumption was 132 (56) kcal/d (P = 0.03) lower. Approximately 80% of the decrease in 24hrEE with soda consumption was due to lower awake-inactive energy expenditure (EE; P = 0.001). No specific EE component accounted for the differences observed with fish consumption. CONCLUSIONS The data indicate that dietary sources of protein and carbohydrates appear to influence 24hrEE and inactive EE.
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Affiliation(s)
- Cassie M. Mitchell
- 4212 N. 16 Street, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, 85016 USA
| | - Paolo Piaggi
- 4212 N. 16 Street, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, 85016 USA
| | - Diane M. O’Brien
- 230 Artic Health Research Building, Center for Alaska Native Health Research, Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK, 99775, USA
| | - Jonathan Krakoff
- 4212 N. 16 Street, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, 85016 USA
| | - Susanne B. Votruba
- 4212 N. 16 Street, Obesity and Diabetes Clinical Research Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, AZ, 85016 USA
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13
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Helland A, Bratlie M, Hagen IV, Midttun Ø, Sveier H, Mellgren G, Ueland PM, Gudbrandsen OA. Effect of high intake of cod or salmon on serum total neopterin concentration: a randomised clinical trial. Eur J Nutr 2021; 60:3237-3248. [PMID: 33576844 PMCID: PMC8354862 DOI: 10.1007/s00394-021-02497-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/22/2021] [Indexed: 12/31/2022]
Abstract
Purpose Primarily, to investigate the effect of high intake of cod (lean fish) or salmon (fatty fish) on serum concentration of total neopterin, a marker of cellular immune activation that is associated with cardiovascular disease. Second, to investigate effects of high cod/salmon intake on antioxidant vitamins and elements essential for activity of antioxidant enzymes. Methods In this randomised clinical trial, 63 participants with overweight/obesity consumed 750 g/week of either Atlantic cod (N = 22) or Atlantic salmon (N = 22) or were instructed to continue their normal eating habits but avoid fish intake (Control group, N = 19) for 8 weeks. Food intake was recorded, and fasting serum were collected at baseline and endpoint. Results Serum total neopterin concentration was reduced in the Cod group (median change − 2.65 (25th, 75th percentiles − 3.68, − 0.45) nmol/l, P = 0.018) but not in the Salmon group (median change 0.00 (25th, 75th percentiles − 4.15, 3.05) nmol/l, P = 0.59) when compared with the Control group after 8 weeks. The estimated daily intake of selenium, iron, magnesium and zinc were similar between all groups. Increased serum concentration of selenium was observed only after cod intake when compared to the Control group (P = 0.017). Changes in serum concentrations of copper, iron, magnesium, all-trans retinol, α-tocopherol and γ-tocopherol were similar between the groups. Conclusion A high intake of cod, but not of salmon, lowered serum total neopterin concentration when compared to the Control group. Clinical trial registration This trial was registered at clinicaltrials.gov as NCT02350595
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Affiliation(s)
- Anita Helland
- Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, 5021, Bergen, Norway
| | - Marianne Bratlie
- Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, 5021, Bergen, Norway
| | - Ingrid V Hagen
- Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, 5021, Bergen, Norway
| | | | - Harald Sveier
- Lerøy Seafood Group ASA, PO Box 7600, 5020, Bergen, Norway
| | - Gunnar Mellgren
- Department of Clinical Science, University of Bergen, 5021, Bergen, Norway.,Hormone Laboratory, Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, 5021, Bergen, Norway
| | | | - Oddrun A Gudbrandsen
- Department of Clinical Medicine, University of Bergen, Haukeland University Hospital, 5021, Bergen, Norway.
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14
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Jensen C, Dale HF, Hausken T, Hatlebakk JG, Brønstad I, Lied GA, Hoff DAL. The Effect of Supplementation with Low Doses of a Cod Protein Hydrolysate on Satiety Hormones and Inflammatory Biomarkers in Adults with Metabolic Syndrome: A Randomized, Double-Blind Study. Nutrients 2020; 12:nu12113421. [PMID: 33171589 PMCID: PMC7695186 DOI: 10.3390/nu12113421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/04/2020] [Accepted: 11/06/2020] [Indexed: 12/23/2022] Open
Abstract
Metabolic syndrome (MetS) is characterised by metabolic abnormalities that increase the risk of developing type 2 diabetes mellitus and cardiovascular disease. Altered levels of circulating ghrelin, several adipokines and inflammatory markers secreted from adipose tissue, such as leptin, adiponectin, tumor necrosis factor alpha, are observed in overweight and obese individuals. We assessed the effect of supplementation with low doses of a cod protein hydrolysate (CPH) on fasting and postprandial levels of acylated ghrelin, as well as fasting levels of adiponectin, leptin and inflammatory markers in subjects with MetS. A multicentre, double-blinded, randomized controlled trial with a parallel group design was conducted. Subjects received a daily supplement of CPH (4 g protein, n = 15) or placebo (0 g protein, n = 15). We observed no effect on fasting or postprandial levels of acylated ghrelin, fasting levels of adiponectin (p = 0.089) or leptin (p = 0.967) after supplementation with CPH, compared to placebo. Overall, our study showed that 8 weeks supplementation with a low dose of CPH in subjects with MetS had no effect on satiety hormones or most of the inflammatory markers, but the levels of high-sensitivity C-reactive protein were statistically significantly different in the CPH-group compared to placebo group. The robustness and clinical relevance of these findings should be explored in future studies with a larger sample size.
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Affiliation(s)
- Caroline Jensen
- Centre for Nutrition, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; (H.F.D.); (T.H.); (J.G.H.); (G.A.L.)
- Correspondence:
| | - Hanna Fjeldheim Dale
- Centre for Nutrition, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; (H.F.D.); (T.H.); (J.G.H.); (G.A.L.)
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway;
| | - Trygve Hausken
- Centre for Nutrition, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; (H.F.D.); (T.H.); (J.G.H.); (G.A.L.)
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway;
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, 5021 Bergen, Norway
| | - Jan Gunnar Hatlebakk
- Centre for Nutrition, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; (H.F.D.); (T.H.); (J.G.H.); (G.A.L.)
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway;
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, 5021 Bergen, Norway
| | - Ingeborg Brønstad
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway;
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, 5021 Bergen, Norway
| | - Gülen Arslan Lied
- Centre for Nutrition, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway; (H.F.D.); (T.H.); (J.G.H.); (G.A.L.)
- Division of Gastroenterology, Department of Medicine, Haukeland University Hospital, 5021 Bergen, Norway;
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, 5021 Bergen, Norway
| | - Dag Arne Lihaug Hoff
- Division of Gastroenterology, Department of Medicine, Ålesund Hospital, Møre and Romsdal Hospital Trust, 6026 Ålesund, Norway;
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Science, Norwegian University of Science and Technology, 7491 Trondheim, Norway
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15
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Supplementation with Low Doses of a Cod Protein Hydrolysate on Glucose Regulation and Lipid Metabolism in Adults with Metabolic Syndrome: A Randomized, Double-Blind Study. Nutrients 2020; 12:nu12071991. [PMID: 32635503 PMCID: PMC7400914 DOI: 10.3390/nu12071991] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 02/06/2023] Open
Abstract
The risk of cardiovascular diseases and type 2 diabetes mellitus are increased in subjects with metabolic syndrome (MetS), and hydrolyzed fish protein may have favorable effects on metabolic health. Here, we investigated the effect of 8 weeks supplementation with 4 g of cod protein hydrolysate (CPH) on glucose metabolism, lipid profile and body composition in individuals with MetS in a double-blind, randomized intervention study with a parallel-group design. Subjects received a daily supplement of CPH (n = 15) or placebo (n = 15). Primary outcomes were serum fasting and postprandial glucose levels. Secondary outcomes were fasting and postprandial insulin and glucagon-like peptide 1 (GLP-1), fasting lipid concentrations and body composition. No difference was observed between CPH and placebo for insulin, glucose or GLP-1 after 8 weeks intervention. Fasting triacylglycerol decreased in both the CPH group and placebo group, with no change between groups. Fasting total cholesterol and low-density lipoprotein cholesterol decreased significantly within both groups from baseline to study end, but no difference was observed between the two groups. In conclusion, supplementing with a low dose of CPH in subjects with MetS for 8 weeks had no effect on fasting or postprandial levels of insulin, glucose or GLP-1, lipid profile or body composition.
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16
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Demers G, Roy J, Machuca-Parra AI, Dashtehei Pour Z, Bairamian D, Daneault C, Rosiers CD, Ferreira G, Alquier T, Fulton S. Fish oil supplementation alleviates metabolic and anxiodepressive effects of diet-induced obesity and associated changes in brain lipid composition in mice. Int J Obes (Lond) 2020; 44:1936-1945. [PMID: 32546855 DOI: 10.1038/s41366-020-0623-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 05/01/2020] [Accepted: 05/22/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVE Obesity significantly elevates the odds of developing mood disorders. Chronic consumption of a saturated high-fat diet (HFD) elicits anxiodepressive behavior in a manner linked to metabolic dysfunction and neuroinflammation in mice. Dietary omega-3 polyunsaturated fatty acids (n-3 PUFA) can improve both metabolic and mood impairments by relieving inflammation. Despite these findings, the effects of n-3 PUFA supplementation on energy homeostasis, anxiodepressive behavior, brain lipid composition, and gliosis in the diet-induced obese state are unclear. METHODS Male C57Bl/6J mice were fed a saturated high-fat diet (HFD) or chow for 20 weeks. During the last 5 weeks mice received daily gavage ("supplementation") of fish oil (FO) enriched with equal amounts of docosahexaenoic (DHA) and eicosapentaenoic acid (EPA) or control corn oil. Food intake and body weight were measured throughout while additional metabolic parameters and anxiety- and despair-like behavior (elevated-plus maze, light-dark box, and forced swim tasks) were evaluated during the final week of supplementation. Forebrain lipid composition and markers of microglia activation and astrogliosis were assessed by gas chromatography-mass spectrometry and real-time PCR, respectively. RESULTS Five weeks of FO supplementation corrected glucose intolerance and attenuated hyperphagia in HFD-induced obese mice without affecting adipose mass. FO supplementation also defended against the anxiogenic and depressive-like effects of HFD. Brain lipids, particularly anti-inflammatory PUFA, were diminished by HFD, whereas FO restored levels beyond control values. Gene expression markers of brain reactive gliosis were supressed by FO. CONCLUSIONS Supplementing a saturated HFD with FO rich in EPA and DHA corrects glucose intolerance, inhibits food intake, suppresses anxiodepressive behaviors, enhances anti-inflammatory brain lipids, and dampens indices of brain gliosis in obese mice. Together, these findings support increasing dietary n-3 PUFA for the treatment of metabolic and mood disturbances associated with excess fat intake and obesity.
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Affiliation(s)
- Geneviève Demers
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada.,Departments of Nutrition, Université de Montréal, MontrealQC, QC, H2X 0A9, Canada
| | - Jerome Roy
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada
| | - Arturo Israel Machuca-Parra
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada.,Departments of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Zahra Dashtehei Pour
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada.,Departments of Nutrition, Université de Montréal, MontrealQC, QC, H2X 0A9, Canada
| | - Diane Bairamian
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada.,Departments of Nutrition, Université de Montréal, MontrealQC, QC, H2X 0A9, Canada
| | | | - Christine Des Rosiers
- Departments of Nutrition, Université de Montréal, MontrealQC, QC, H2X 0A9, Canada.,Montreal Heart Institute, Montréal, QC, Canada
| | - Guillaume Ferreira
- Nutrition and Integrative Neurobiology Unit, UMR1296 INRA - Université de Bordeaux, Bordeaux, France.,Food4BrainHealth France-Canada International Research Network, Bordeaux, France
| | - Thierry Alquier
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada.,Departments of Medicine, Université de Montréal, Montréal, QC, Canada.,Food4BrainHealth France-Canada International Research Network, Bordeaux, France
| | - Stephanie Fulton
- Centre de Recherche du CHUM and Montreal Diabetes Research Center, Montreal, QC, H2X 0A9, Canada. .,Departments of Nutrition, Université de Montréal, MontrealQC, QC, H2X 0A9, Canada. .,Food4BrainHealth France-Canada International Research Network, Bordeaux, France.
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17
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Effect of Cod Residual Protein Supplementation on Markers of Glucose Regulation in Lean Adults: A Randomized Double-Blind Study. Nutrients 2020; 12:nu12051445. [PMID: 32429429 PMCID: PMC7285039 DOI: 10.3390/nu12051445] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/18/2022] Open
Abstract
Large quantities of protein-rich cod residuals, which are currently discarded, could be utilized for human consumption. Although fish fillet intake is related to beneficial health effects, little is known about the potential health effects of consuming cod residual protein powder. Fifty lean adults were randomized to consume capsules with 8.1 g/day of cod residual protein (Cod-RP) or placebo capsules (Control group) for eight weeks, in this randomized, double-blind study. The intervention was completed by 40 participants. Fasting glucose and insulin concentrations were unaffected by Cod-RP supplementation, whereas plasma concentrations of α-hydroxybutyrate, β-hydroxybutyrate and acetoacetate all were decreased compared with the Control group. Trimethylamine N-oxide concentration in plasma and urine were increased in the Cod-RP group compared with the Control group. To conclude, the reduction in these potential early markers of impaired glucose metabolism following Cod-RP supplementation may indicate beneficial glucoregulatory effects of cod residual proteins. Trimethylamine N-oxide appears to be an appropriate biomarker of cod residual protein intake in lean adults.
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18
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Lin CC, Sengee A, Mjøs SA. Minor compounds and potential interferents in gas chromatographic analyses of human serum fatty acids. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1138:121963. [DOI: 10.1016/j.jchromb.2019.121963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 12/19/2019] [Accepted: 12/28/2019] [Indexed: 11/29/2022]
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19
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Shabrina A, Tung TH, Nguyen NTK, Lee HC, Wu HT, Wang W, Huang SY. n-3 PUFA and caloric restriction diet alters lipidomic profiles in obese men with metabolic syndrome: a preliminary open study. Eur J Nutr 2019; 59:3103-3112. [PMID: 31865423 DOI: 10.1007/s00394-019-02149-4] [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: 06/27/2019] [Accepted: 11/18/2019] [Indexed: 12/20/2022]
Abstract
PURPOSE For people with metabolic syndrome (MetS), altering the macronutrient composition of their diets might ameliorate metabolic abnormalities. The common method of clinical assessment only measures total lipid concentrations but ignores the individual species that contribute to these total concentrations. Thus, to predict the amelioration of MetS following caloric restriction (CR) and the intake of fish oil, we used lipidomics to investigate changes in plasma lipids and identify potential lipid metabolites. METHODS Lipidomics was performed using ultra-high-performance liquid chromatography-tandem mass spectrometry on plasma samples from a clinical trial conducted over 12 weeks. Subjects were randomized into two groups: CR (n = 12) and CR with fish oil (CRF, n = 9). Anthropometric and clinical parameters were measured and correlated with plasma lipidomics data. RESULTS Compared with baseline, significant differences were observed in body weight, waist circumference, blood pressure and interleukin-6 in both groups, but triglyceride (TG) levels significantly decreased in only the CRF group (all p < 0.05). A total of 138 lipid species were identified. Levels of species containing long-chain polyunsaturated fatty acids were significantly elevated-greater than twofold-following fish oil intake, these included TG (60:9) and phosphatidylcholine (p40:6) (all q < 0.05). TG (60:9) tended to correlate negatively with body weight, body mass index, blood pressure, and HbA1c following fish oil intake. CONCLUSION CR and fish oil can ameliorate MetS features, including anthropometric parameters, blood pressure, and blood lipid concentrations. The levels of particular lipid species such as TG-containing docosapentaenoic acid were elevated post-intervention and negatively associated with MetS features. TG (60:9) may be proposed as a lipid metabolite to predict amelioration in MetS following the intake of CR and fish oil.
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Affiliation(s)
- A Shabrina
- School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Xing Street, Taipei, 110, Taiwan
| | - T-H Tung
- School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Xing Street, Taipei, 110, Taiwan
| | - N T K Nguyen
- School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Xing Street, Taipei, 110, Taiwan
| | - H-C Lee
- School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Xing Street, Taipei, 110, Taiwan
| | - H-T Wu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan
| | - W Wang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan.,Division of Digestive Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei, Taiwan.,Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - S-Y Huang
- School of Nutrition and Health Sciences, Taipei Medical University, 250 Wu-Xing Street, Taipei, 110, Taiwan. .,Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan. .,Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan. .,Center for Reproductive Medicine and Sciences, Taipei Medical University Hospital, Taipei, Taiwan.
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20
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Five salmon dinners per week were not sufficient to prevent the reduction in serum vitamin D in autumn at 60° north latitude: a randomised trial. Br J Nutr 2019; 123:419-427. [DOI: 10.1017/s0007114519002964] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
AbstractLow serum concentrations of several vitamins have been linked to increased risk of diseases including insulin resistance and type 2 diabetes (T2D). Fish is a good source of several vitamins, and the prevalence of T2D is low in populations with high fish intake. The aim of the present study was to investigate the effects of high fish intake on vitamins in serum from adults in autumn in South-Western Norway at 60° north latitude. In this randomised clinical trial, sixty-three healthy participants with overweight/obesity consumed 750 g/week of either cod (n22) or salmon (n22) as five weekly dinners or were instructed to continue their normal eating habits but avoid fish intake (Control group,n19) for 8 weeks. The estimated vitamin D intake was significantly increased in the Salmon group when compared with the Cod group (P= 6·3 × 10−4) and with the Control group (P= 3·5 × 10−6), with no differences between groups for estimated intake of vitamins A, B1, B2, B3, B6, B9, C and E. Serum 25-hydroxyvitamin D3concentration was decreased in all groups after 8 weeks; however, the reduction in the Salmon group was significantly smaller compared with the Cod group (P= 0·013) and the Control group (P= 0·0060). Cod and salmon intake did not affect serum concentrations of the other measured vitamins. The findings suggest that 750 g/week of salmon was not sufficient to prevent a decrease in serum 25-hydroxyvitamin D3in autumn in South-Western Norway in adults with overweight/obesity.
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21
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Hagen IV, Helland A, Bratlie M, Midttun Ø, McCann A, Sveier H, Rosenlund G, Mellgren G, Ueland PM, Gudbrandsen OA. TMAO, creatine and 1-methylhistidine in serum and urine are potential biomarkers of cod and salmon intake: a randomised clinical trial in adults with overweight or obesity. Eur J Nutr 2019; 59:2249-2259. [DOI: 10.1007/s00394-019-02076-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/02/2019] [Indexed: 12/12/2022]
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Dale HF, Madsen L, Lied GA. Fish-derived proteins and their potential to improve human health. Nutr Rev 2019; 77:572-583. [PMID: 31124569 DOI: 10.1093/nutrit/nuz016] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Emerging evidence from studies evaluating the effect of lean fish consumption in humans suggests that proteins from fish have several beneficial metabolic effects. Rest, or waste, material from the fishing industry contains high-quality proteins, and utilization of this material offers novel possibilities for the development of protein-containing products that might be beneficial for human consumption. Fish-derived peptides containing bioactive amino acid sequences suggested to beneficially influence pathways involved in body composition, hypertension, lipid profile, and regulation of glucose metabolism are of particular interest, although the results of published studies are conflicting. This review aims to summarize current knowledge from animal studies and clinical interventions in humans evaluating the effects of lean fish, fish proteins, and fish-derived peptides on outcomes related to metabolic health. Fish proteins have a high content of taurine, and animal trials suggest that taurine mediates some of the beneficial effects observed thus far, although the mechanisms by which fish peptides exert their action are not yet elucidated. At this time, the literature is inconsistent, and there is insufficient mechanistic evidence to support a beneficial effect of fish-derived peptides on metabolic health.
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Affiliation(s)
- Hanna Fjeldheim Dale
- Department of Clinical Medicine, Centre for Nutrition; the Section of Gastroenterology, Department of Medicine
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, Bergen, Norway
| | - Lise Madsen
- Department of Clinical Medicine, Centre for Nutrition; the Section of Gastroenterology, Department of Medicine
- National Centre of Functional Gastrointestinal Disorders, Haukeland University Hospital, Bergen, Norway
| | - Gülen Arslan Lied
- Institute of Marine Research, Bergen, Norway; and the Department of Biology, University of Copenhagen, Copenhagen, Denmark
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Abstract
We provide an overview of studies on seafood intake in relation to obesity, insulin resistance and type 2 diabetes. Overweight and obesity development is for most individuals the result of years of positive energy balance. Evidence from intervention trials and animal studies suggests that frequent intake of lean seafood, as compared with intake of terrestrial meats, reduces energy intake by 4–9 %, sufficient to prevent a positive energy balance and obesity. At equal energy intake, lean seafood reduces fasting and postprandial risk markers of insulin resistance, and improves insulin sensitivity in insulin-resistant adults. Energy restriction combined with intake of lean and fatty seafood seems to increase weight loss. Marine n-3 PUFA are probably of importance through n-3 PUFA-derived lipid mediators such as endocannabinoids and oxylipins, but other constituents of seafood such as the fish protein per se, trace elements or vitamins also seem to play a largely neglected role. A high intake of fatty seafood increases circulating levels of the insulin-sensitising hormone adiponectin. As compared with a high meat intake, high intake of seafood has been reported to reduce plasma levels of the hepatic acute-phase protein C-reactive protein level in some, but not all studies. More studies are needed to confirm the dietary effects on energy intake, obesity and insulin resistance. Future studies should be designed to elucidate the potential contribution of trace elements, vitamins and undesirables present in seafood, and we argue that stratification into responders and non-responders in randomised controlled trials may improve the understanding of health effects from intake of seafood.
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Effect of a cod protein hydrolysate on postprandial glucose metabolism in healthy subjects: a double-blind cross-over trial. J Nutr Sci 2018; 7:e33. [PMID: 30524707 PMCID: PMC6277920 DOI: 10.1017/jns.2018.23] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 11/01/2018] [Indexed: 01/26/2023] Open
Abstract
The increased prevalence of lifestyle diseases, such as the metabolic syndrome and type 2 diabetes mellitus (T2DM), calls for more knowledge on dietary treatments targeting the specific metabolic pathways involved in these conditions. Several studies have shown a protein preload before a meal to be effective in lowering the postprandial glycaemic response in healthy individuals and patients with T2DM. The aim of the present study was to assess the effect of a marine protein hydrolysate (MPH) from Atlantic cod (Gadus morhua) on postprandial glucose metabolism in healthy, middle-aged to elderly subjects. This double-blind cross-over trial (n 41) included two study days with 4–7 d wash-out in between. The intervention consisted of 20 mg of MPH (or casein as control) per kg body weight given before a breakfast meal. The primary outcome was postprandial response in glucose metabolism, measured by samples of serum glucose, insulin and plasma glucagon-like peptide 1 (GLP-1) in 20 min intervals for 180 min. In a mixed-model regression analysis, no differences were observed between MPH and control for postprandial glucose concentration (mean difference: −0·04 (95 % CI –0·17, 0·09) mmol/l; P = 0·573) or GLP-1 concentration (mean difference between geometric means: 1·02 (95 % CI 0·99, 1·06) pmol/l; P = 0·250). The postprandial insulin concentration was significantly lower after MPH compared with control (mean difference between geometric means: 1·067 (95 % CI 1·01, 1·13) mIU/l; P = 0·032). Our findings demonstrate that a single dose of MPH before a breakfast meal reduces postprandial insulin secretion, without affecting blood glucose response or GLP-1 levels, in healthy individuals. Further studies with repeated dosing and in target groups with abnormal glucose control are warranted.
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Vikøren LA, Drotningsvik A, Bergseth MT, Mjøs SA, Austgulen MH, Mellgren G, Gudbrandsen OA. Intake of Baked Cod Fillet Resulted in Lower Serum Cholesterol and Higher Long Chain n-3 PUFA Concentrations in Serum and Tissues in Hypercholesterolemic Obese Zucker fa/fa Rats. Nutrients 2018; 10:E840. [PMID: 29958397 PMCID: PMC6073601 DOI: 10.3390/nu10070840] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/15/2018] [Accepted: 06/26/2018] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence indicates that lean fish consumption may benefit cardiovascular health. High cholesterol and low n-3 PUFA concentrations in serum are associated with an increased risk of coronary heart disease; therefore, it is of interest to investigate effects of cod intake on cholesterol and n-3 PUFAs in serum and tissues. Hypercholesterolemic obese Zucker fa/fa rats were fed diets containing 25% protein from baked cod fillet and 75% protein from casein (Baked Cod Diet), or casein as the sole protein source (Control Diet) for four weeks. Consuming Baked Cod Diet resulted in lower serum cholesterol and lower hepatic mRNA concentrations of HMG-CoA reductase and sterol O-acyltransferase-2 without affecting serum bile acid concentration, faecal excretion of cholesterol and bile acid, and hepatic concentrations of bile acids, cholesterol and cholesterol 7 alpha-hydroxylase mRNA when compared to Control Diet. Rats fed Baked Cod Diet had higher concentrations of n-3 PUFAs in serum, liver, skeletal muscle and adipose tissue. To conclude, baked cod fillet intake resulted in lower serum cholesterol, which was probably caused by lower endogenous cholesterol synthesis, and higher n-3 PUFA in serum and tissues in obese Zucker fa/fa rats. These findings support the evidence that lean fish consumption might benefit cardiovascular health.
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Affiliation(s)
- Linn A Vikøren
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway.
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway.
| | - Aslaug Drotningsvik
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway.
| | - Marthe T Bergseth
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway.
| | - Svein A Mjøs
- Department of Chemistry, University of Bergen, P.O. Box 7803, 5020 Bergen, Norway.
- Nofima BioLab, P.O. Box 1425 Oasen, 5828 Bergen, Norway.
| | - Maren H Austgulen
- Department of Clinical Science, University of Bergen, 5021 Bergen, Norway.
| | - Gunnar Mellgren
- Department of Clinical Science, KG Jebsen Center for Diabetes Research, University of Bergen, Haukeland University Hospital, 5021 Bergen, Norway.
- Hormone Laboratory, Haukeland University Hospital, 5021 Bergen, Norway.
| | - Oddrun A Gudbrandsen
- Dietary Protein Research Group, Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway.
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Daily Intake of Protein from Cod Residual Material Lowers Serum Concentrations of Nonesterified Fatty Acids in Overweight Healthy Adults: A Randomized Double-Blind Pilot Study. Mar Drugs 2018; 16:md16060197. [PMID: 29874805 PMCID: PMC6025256 DOI: 10.3390/md16060197] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/18/2018] [Accepted: 06/01/2018] [Indexed: 12/22/2022] Open
Abstract
Improved process technologies have allowed fishing vessels to utilize residuals from cod fillet production (head, backbone, skin, cuttings, and entrails) and convert this to high-quality protein powders for human consumption. In this double-blind pilot study, 42 healthy overweight or obese adults were randomized to three experimental groups consuming tablets corresponding to 6 g/day of proteins from cod residuals as presscake meal (Cod-PC), presscake and stickwater meal (Cod-PCW), or placebo tablets (control) for eight weeks. The primary outcome of this study was changes in metabolites related to glucose regulation in overweight or obese healthy adults after intake of proteins from cod residuals. Cod-PC supplementation decreased postprandial serum nonesterified fatty acids (NEFA) concentration and increased gene expressions of diglyceride acyltransferase 1 and 2 in subcutaneous adipose tissue compared with controls. Fasting insulin increased while fasting NEFA and 120-min postprandial glucose decreased within the Cod-PC group, but these changes did not differ from the other groups. In conclusion, supplementation with Cod-PC beneficially affected postprandial serum NEFA concentration compared with the other groups in overweight or obese adults. Supplementation with Cod-PCW, which contains a higher fraction of water-soluble protein compared to Cod-PC, did not affect serum markers of glucose regulation.
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27
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Abstract
PURPOSE OF REVIEW Populations with significant dietary fish intake tend to have lower cardiovascular (CV) risk and demonstrable physiologic differences including lower lipid/lipoprotein levels and other direct and indirect effects on the arterial wall and inhibiting factors that promote atherosclerosis. Treatment with high doses of pharmacologic-grade omega-3 fatty acid (n-3FA) supplements achieves significant reductions in triglycerides (TG), non-high-density lipoprotein- (non-HDL-) and TG-rich lipoprotein- (TRL-) cholesterol levels. n-3FA supplements have significant effects on markers of atherosclerosis risk including endothelial function, low-density lipoprotein (LDL) oxidation, cellular and humoral markers of inflammation, hemodynamic factors, and plaque stabilization. This review summarizes the lipid and cardiometabolic effects of prescription-grade n-3FAs and will discuss clinical trials, national/organizational guidelines, and expert opinion on the impact of supplemental n-3FAs on CV health and disease. RECENT FINDINGS Clinical trial evidence supports use of n-3FAs in individuals with established atherosclerotic cardiovascular disease (ASCVD), but the data either does not support or is lacking for other types of cardiometabolic risk including prevention of stroke, treatment in patients with heart failure, diabetes mellitus and prediabetes, and for primary prevention in the general population. Despite inconsistent findings to support widespread benefit, there is persistent population-wide enthusiasm for n-3FA as a dietary supplement for its cardiometabolic benefits. Fortunately, there are ongoing clinical trials to assess whether the lipid/lipoprotein benefits may be extended to other at-risk populations and whether lower-dose therapy may provide background benefit for primary prevention of ASCVD.
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