1
|
Rotarescu RD, Mathur M, Bejoy A, Anderson GH, Metherel AH. Serum measures of docosahexaenoic acid (DHA) synthesis underestimates whole body DHA synthesis in male and female mice. J Nutr Biochem 2024:109689. [PMID: 38876393 DOI: 10.1016/j.jnutbio.2024.109689] [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: 04/28/2024] [Revised: 06/06/2024] [Accepted: 06/09/2024] [Indexed: 06/16/2024]
Abstract
Females have higher docosahexaenoic acid (DHA) levels than males, proposed to be a result of higher DHA synthesis rates from α-linolenic acid (ALA). However, DHA synthesis rates are reported to be low, and have not been directly compared between sexes. Here, we apply a new compound specific isotope analysis model to determine n-3 PUFA synthesis rates in male and female mice and assess its potential translation to human populations. Male and female C57BL/6N mice were allocated to one of three 12-week dietary interventions with added ALA, eicosapentaenoic acid (EPA) or DHA. The diets included low carbon-13 (δ13C)-n-3 PUFA for 4 weeks, followed by high δ13C-n-3 PUFA for 8 weeks (n=4 per diet, time point, sex). Following the diet switch, blood and tissues were collected at multiple time points, and fatty acid levels and δ13C were determined and fit to one-phase exponential decay modeling. Hepatic DHA synthesis rates were not different (p>0.05) between sexes. However, n-3 docosapentaenoic acid (DPAn-3) synthesis from dietary EPA was 66% higher (p<0.05) in males compared to females, suggesting higher synthesis downstream of DPAn-3 of females. Estimates of percent conversion of dietary ALA to serum DHA was 0.2%, in line with previous rodent and human estimates, but severely underestimates percent dietary ALA conversion to whole body DHA of 9.5%. Taken together, our data indicates that reports of low human DHA synthesis rates may be inaccurate, with synthesis being much higher than previously believed. Future animal studies and translation of this model to humans are needed for greater understanding of n-3 PUFA synthesis and metabolism, and whether the higher-than-expected ALA-derived DHA can offset dietary DHA recommendations set by health agencies.
Collapse
Affiliation(s)
- Ruxandra D Rotarescu
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, Ontario, Canada, M5S 1A8
| | - Mahima Mathur
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, Ontario, Canada, M5S 1A8
| | - Ashley Bejoy
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, Ontario, Canada, M5S 1A8
| | - G Harvey Anderson
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, Ontario, Canada, M5S 1A8
| | - Adam H Metherel
- Department of Nutritional Sciences, Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, Ontario, Canada, M5S 1A8
| |
Collapse
|
2
|
Soldevila-Domenech N, Fagundo B, Cuenca-Royo A, Forcano L, Gomis-González M, Boronat A, Pastor A, Castañer O, Zomeño MD, Goday A, Dierssen M, Baghizadeh Hosseini K, Ros E, Corella D, Martínez-González MÁ, Salas-Salvadó J, Fernández-Aranda F, Fitó M, de la Torre R. Relationship between sex, APOE genotype, endocannabinoids and cognitive change in older adults with metabolic syndrome during a 3-year Mediterranean diet intervention. Nutr J 2024; 23:61. [PMID: 38862960 PMCID: PMC11167771 DOI: 10.1186/s12937-024-00966-w] [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: 12/21/2023] [Accepted: 06/04/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND The Mediterranean diet (MedDiet) has demonstrated efficacy in preventing age-related cognitive decline and modulating plasma concentrations of endocannabinoids (eCBs) and N-acylethanolamines (NAEs, or eCB-like compounds), which are lipid mediators involved in multiple neurological disorders and metabolic processes. Hypothesizing that eCBs and NAEs will be biomarkers of a MedDiet intervention and will be related to the cognitive response, we investigated this relationship according to sex and apolipoprotein E (APOE) genotype, which may affect eCBs and cognitive performance. METHODS This was a prospective cohort study of 102 participants (53.9% women, 18.8% APOE-ɛ4 carriers, aged 65.6 ± 4.5 years) from the PREDIMED-Plus-Cognition substudy, who were recruited at the Hospital del Mar Research Institute (Barcelona). All of them presented metabolic syndrome plus overweight/obesity (inclusion criteria of the PREDIMED-Plus) and normal cognitive performance at baseline (inclusion criteria of this substudy). A comprehensive battery of neuropsychological tests was administered at baseline and after 1 and 3 years. Plasma concentrations of eCBs and NAEs, including 2-arachidonoylglycerol (2-AG), anandamide (AEA), oleoylethanolamide (OEA), palmitoylethanolamide (PEA), and N-docosahexaenoylethanolamine (DHEA), were also monitored. Baseline cognition, cognitive changes, and the association between eCBs/NAEs and cognition were evaluated according to gender (crude models), sex (adjusted models), and APOE genotype. RESULTS At baseline, men had better executive function and global cognition than women (the effect size of gender differences was - 0.49, p = 0.015; and - 0.42, p = 0.036); however, these differences became nonsignificant in models of sex differences. After 3 years of MedDiet intervention, participants exhibited modest improvements in memory and global cognition. However, greater memory changes were observed in men than in women (Cohen's d of 0.40 vs. 0.25; p = 0.017). In men and APOE-ε4 carriers, 2-AG concentrations were inversely associated with baseline cognition and cognitive changes, while in women, cognitive changes were positively linked to changes in DHEA and the DHEA/AEA ratio. In men, changes in the OEA/AEA and OEA/PEA ratios were positively associated with cognitive changes. CONCLUSIONS The MedDiet improved participants' cognitive performance but the effect size was small and negatively influenced by female sex. Changes in 2-AG, DHEA, the OEA/AEA, the OEA/PEA and the DHEA/AEA ratios were associated with cognitive changes in a sex- and APOE-dependent fashion. These results support the modulation of the endocannabinoid system as a potential therapeutic approach to prevent cognitive decline in at-risk populations. TRIAL REGISTRATION ISRCTN89898870.
Collapse
Grants
- FI_B2021/00104 Agència de Gestió d'Ajuts Universitaris i de Recerca
- PROMETEO/2017/017; Grant FEA/SEA 2017 for Primary Care Research Generalitat Valenciana
- PI13/00233, PI13/00728, PI13/01123, PI13/00462, PI16/00533, PI16/00366, PI16/01094, PI16/00501, PI17/01167, PI19/00017, PI19/00781, PI19/01032, PI19/00576 Instituto de Salud Carlos III
- PI13/00233, PI13/00728, PI13/01123, PI13/00462, PI16/00533, PI16/00366, PI16/01094, PI16/00501, PI17/01167, PI19/00017, PI19/00781, PI19/01032, PI19/00576 Instituto de Salud Carlos III
- PI13/00233, PI13/00728, PI13/01123, PI13/00462, PI16/00533, PI16/00366, PI16/01094, PI16/00501, PI17/01167, PI19/00017, PI19/00781, PI19/01032, PI19/00576 Instituto de Salud Carlos III
- Advanced Research Grant 2014-2019; agreement #340918 HORIZON EUROPE European Research Council
- SLT006/17/00246, SLT002/16/00045 and SLT006/17/00077 Departament de Salut, Generalitat de Catalunya
- SLT006/17/00246, SLT002/16/00045 and SLT006/17/00077 Departament de Salut, Generalitat de Catalunya
- SLT006/17/00246, SLT002/16/00045 and SLT006/17/00077 Departament de Salut, Generalitat de Catalunya
- 2013ACUP00194 'la Caixa' Foundation
- Eat2beNICE/ H2020-SFS-2016-2; Ref 728018; and PRIME/ H2020-SC1-BHC-2018-2020; Ref: 847879 H2020 European Institute of Innovation and Technology
- Eat2beNICE/ H2020-SFS-2016-2; Ref 728018; and PRIME/ H2020-SC1-BHC-2018-2020; Ref: 847879 H2020 European Institute of Innovation and Technology
- Eat2beNICE/ H2020-SFS-2016-2; Ref 728018; and PRIME/ H2020-SC1-BHC-2018-2020; Ref: 847879 H2020 European Institute of Innovation and Technology
- Eat2beNICE/ H2020-SFS-2016-2; Ref 728018; and PRIME/ H2020-SC1-BHC-2018-2020; Ref: 847879 H2020 European Institute of Innovation and Technology
- 2017 SGR 138 Generalitat de Catalunya
- ‘la Caixa’ Foundation
Collapse
Affiliation(s)
- Natalia Soldevila-Domenech
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, 08003, Spain
| | - Beatriz Fagundo
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- Department of Physiotherapy, Fundació Universitària del Bages (FUB), Manresa, 08042, Spain
| | - Aida Cuenca-Royo
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Laura Forcano
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
| | - Maria Gomis-González
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Anna Boronat
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Antoni Pastor
- Integrative Pharmacology and Systems Neurosciences Research Group, Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
| | - Olga Castañer
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Cardiovascular Risk and Nutrition Research Group, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- Endocrinology Service, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Maria Dolores Zomeño
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Cardiovascular Risk and Nutrition Research Group, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- School of Health Sciences, Blanquerna-Ramon Llull University, Barcelona, 08022, Spain
| | - Albert Goday
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Cardiovascular Risk and Nutrition Research Group, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
- Endocrinology Service, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Mara Dierssen
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, 08003, Spain
- Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, 08003, Spain
- CIBER de Enfermedades Raras (CIBERER), Barcelona, Spain
| | - Khashayar Baghizadeh Hosseini
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, 08003, Spain
- Cardiovascular risk, Nutrition and Aging, Institut d'Investigacions Biomèdiques August Pi Sunyer (IDIBAPS), Hospital Clínic, Barcelona, 08036, Spain
| | - Emilio Ros
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Department of Preventive Medicine and Public Health, School of Medicine, University of Valencia, Valencia, 46010, Spain
| | - Dolores Corella
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain
| | - Miguel Ángel Martínez-González
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Navarra's Health Research Institute (IdiSNA), Pamplona, Spain
- Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Unitat de Nutrició Humana, Reus, Spain
| | - Jordi Salas-Salvadó
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Institut d'Investigació Sanitària Pere Virgili (IISPV), Reus, Spain
| | - Fernando Fernández-Aranda
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Clinical Psychology Unit, University Hospital of Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, 08908, Spain
- Department of Clinical Sciences, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain
- Psychoneurobiology of Eating and Addictive Behaviors Group, Neuroscience Program, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, 08908, Spain
| | - Montserrat Fitó
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain
- Cardiovascular Risk and Nutrition Research Group, Hospital del Mar Research Institute (HMRI), Barcelona, 08003, Spain
| | - Rafael de la Torre
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, 08003, Spain.
- CIBER de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, 28029, Spain.
- Neurosciences Research Program, Hospital del Mar Research Institute (HMRI), Dr Aiguader 88, Barcelona, 08003, Spain.
| |
Collapse
|
3
|
Popović T, Nenadović A, Stanković A, Martačić JD, Ranković S, Kovačević S, Nešović-Ostojić J, Ilić A, Milašin J, De Luka S, Trbovichch AM. Liver phospholipid fatty acid composition in response to chronic high-fat diets. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159526. [PMID: 38871115 DOI: 10.1016/j.bbalip.2024.159526] [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: 12/11/2023] [Revised: 03/29/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
Liver phospholipid fatty acid composition depends on the dietary lipid intake and the efficiency of hepatic enzymatic activity. Our study aimed to simultaneously investigate the liver phospholipid fatty acid composition in response to chronic linseed, palm, or sunflower oil diets. We used adult female C57/BL6 mice and randomly divided them into control and three groups treated with 25 % dietary oils. Prior to treatment, we analyzed the fatty acid profiles in dietary oils and hepatocytes and, after 100 days, the fatty acid composition in the liver using gas-liquid chromatography. Linseed oil treatment elevated alpha-linolenic, eicosapentaenoic, and docosapentaenoic acids and reduced arachidonic and docosatetraenoic acids, consequently lowering the n-6/n-3 ratio. Palm oil treatment increased linoleic acid and decreased docosahexaenoic acid, contributing to an elevated n-6/n-3 ratio. Sunflower oil treatment elevated total monounsaturated fatty acids by increasing palmitoleic, oleic, and vaccenic acids. The estimated activity of Δ9 desaturase was significantly elevated in the sunflower oil group, while Δ5 desaturase was the highest, and Δ6 desaturase was the lowest after the linseed oil diet. Our findings demonstrate that chronic consumption of linseed, palm, or sunflower oil alters the distribution of liver phospholipid fatty acids differently. Sunflower oil diet elevated total monounsaturated fatty acids, proposing potential benefits for liver tissue health. Considering these outcomes, a substantial recommendation emerges to elevate linseed oil intake, recognized as the principal ALA source, thereby aiding in reducing the n-6/n-3 ratio. Moreover, modifying dietary habits to incorporate specific vegetable oils in daily consumption could substantially enhance overall health.
Collapse
Affiliation(s)
- Tamara Popović
- Institute for Medical Research, University of Belgrade, Centre of Excellence in Nutrition and Metabolism, Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Aleksandra Nenadović
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia.
| | - Anica Stanković
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia
| | - Jasmina Debeljak Martačić
- Institute for Medical Research, University of Belgrade, Centre of Excellence in Nutrition and Metabolism, Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Slavica Ranković
- Institute for Medical Research, University of Belgrade, Centre of Excellence in Nutrition and Metabolism, Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Sanjin Kovačević
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia
| | - Jelena Nešović-Ostojić
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia
| | - Andjelija Ilić
- Institute of Physics Belgrade, Pregrevica 118, 11080 Zemun, Belgrade, Serbia
| | - Jelena Milašin
- Department of Human Genetics, University of Belgrade School of Dental Medicine, 6 Dr Subotić Street, 11000 Belgrade, Serbia
| | - Silvio De Luka
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia
| | - Alexander M Trbovichch
- Department of Pathophysiology, University of Belgrade School of Medicine, 1 Dr Subotić Street, 11000 Belgrade, Serbia
| |
Collapse
|
4
|
Loukil I, Mutch DM, Plourde M. Genetic association between FADS and ELOVL polymorphisms and the circulating levels of EPA/DHA in humans: a scoping review. GENES & NUTRITION 2024; 19:11. [PMID: 38844860 PMCID: PMC11157910 DOI: 10.1186/s12263-024-00747-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 05/29/2024] [Indexed: 06/09/2024]
Abstract
BACKGROUND Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are two omega-3 fatty acids that can be synthesized out of their precursor alpha-linolenic acid (ALA). FADS and ELOVL genes encode the desaturase and elongase enzymes required for EPA and DHA synthesis from ALA; however, single nucleotide polymorphisms (SNPs) in FADS and ELOVL genes could modify the levels of EPA and DHA synthesized from ALA although there is no consensus in this area. This review aims to investigate EPA and DHA circulating levels in human blood and their association with FADS or ELOVL. METHODS PubMed, Cochrane, and Scopus databases were used to identify research articles. They were subsequently reviewed by two independent investigators. RESULTS Initially, 353 papers were identified. After removing duplicates and articles not meeting inclusion criteria, 98 full text papers were screened. Finally, this review included 40 studies investigating FADS and/or ELOVL polymorphisms. A total of 47 different SNPs in FADS genes were reported. FADS1 rs174537, rs174547, rs174556 and rs174561 were the most studied SNPs, with minor allele carriers having lower levels of EPA and DHA. SNPs in the FADS genes were in high linkage disequilibrium. SNPs in FADS were correlated with levels of EPA and DHA. No conclusion could be drawn with the ELOVL polymorphisms since the number of studies was too low. CONCLUSION Specific SNPs in FADS gene, such as rs174537, have strong associations with circulating levels of EPA and DHA. Continued investigation regarding the impact of genetic variants related to EPA and DHA synthesis is warranted.
Collapse
Affiliation(s)
- Insaf Loukil
- Research Center on Aging, Health, and Social Sciences Center, Department of Medicine, Sherbrooke University Geriatrics Institute, University of Sherbrooke, Sherbrooke, QC, J1G 1B1, Canada
- Department de Medicine, Faculty of Medicine and health sciences, University of Sherbrooke, Sherbrooke, QC, J1H 5N4, Canada
| | - David M Mutch
- Department of Human Health and Nutritional Sciences, Guelph, ON, N1G 2W1, Canada
| | - Mélanie Plourde
- Research Center on Aging, Health, and Social Sciences Center, Department of Medicine, Sherbrooke University Geriatrics Institute, University of Sherbrooke, Sherbrooke, QC, J1G 1B1, Canada.
- Department de Medicine, Faculty of Medicine and health sciences, University of Sherbrooke, Sherbrooke, QC, J1H 5N4, Canada.
| |
Collapse
|
5
|
Aristizabal-Henao JJ, Biltoft-Jensen AP, Christensen T, Stark KD. Lipidomic and Fatty Acid Biomarkers in Whole Blood Can Predict the Dietary Intake of Eicosapentaenoic and Docosahexaenoic Acids in a Danish Population. J Nutr 2024:S0022-3166(24)00269-4. [PMID: 38710305 DOI: 10.1016/j.tjnut.2024.04.038] [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: 02/14/2024] [Revised: 04/23/2024] [Accepted: 04/27/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND The intake of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been associated with health benefits. Blood levels of these fatty acids, measured by gas chromatography (GC), are associated with their dietary intake, but the relationships with lipidomic measurements are not well defined. OBJECTIVES This study aimed to determine the lipidomic biomarkers in whole blood that predict intakes of EPA + DHA and examine the relationship between lipidomic and GC-based n-3 polyunsaturated fatty acid (n-3 PUFA) biomarkers. METHODS Lipidomic and fatty acid analyses were completed on 120 whole blood samples collected from Danish participants. Dietary intakes were completed using a web-based 7-d food diary. Stepwise multiple linear regression was used to identify the fatty acid and lipidomic variables that predict intakes of EPA + DHA and to determine lipidomic species that predict commonly used fatty acid biomarkers. RESULTS Stepwise regression selected lipidomic variables with an R2 = 0.52 for predicting EPA + DHA intake compared to R2 = 0.40 for the selected fatty acid GC-based variables. More predictive models were generated when the lipidomic variables were selected for females only (R2 = 0.62, n = 68) and males only (R2 = 0.72, n = 52). Phosphatidylethanolamine plasmalogen species containing EPA or DHA tended to be the most predictive lipidomic variables. Stepwise regression also indicated that selected lipidomic variables can predict commonly used fatty acid GC-based n-3 PUFA biomarkers as the R2 values ranged from 0.84 to 0.91. CONCLUSIONS Both fatty acid and lipidomic data can be used to predict EPA + DHA intakes, and fatty acid GC-based biomarkers can be emulated by lipidomic species. Lipidomic-based biomarkers appear to be influenced by sex differences, probably in n-3 PUFA and lipoprotein metabolism. These results improve our ability to understand the relationship between novel lipidomic data and GC fatty acid data and will increase our ability to apply lipidomic methods to fatty acid and lipid nutritional research.
Collapse
Affiliation(s)
- Juan J Aristizabal-Henao
- Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, ON, Canada; Platforms and Translational Sciences, BPGbio Inc., Framingham, MA, United States
| | | | - Tue Christensen
- National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ken D Stark
- Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, ON, Canada.
| |
Collapse
|
6
|
Gumpper-Fedus K, Crowe O, Hart PA, Pita-Grisanti V, Velez-Bonet E, Belury MA, Ramsey M, Cole RM, Badi N, Culp S, Hinton A, Lara L, Krishna SG, Conwell DL, Cruz-Monserrate Z. Differences in Plasma Fatty Acid Composition Related to Chronic Pancreatitis: A Pilot Study. Pancreas 2024; 53:e416-e423. [PMID: 38530954 PMCID: PMC11087201 DOI: 10.1097/mpa.0000000000002318] [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] [Indexed: 03/28/2024]
Abstract
OBJECTIVES Chronic pancreatitis (CP) is an inflammatory disease affecting the absorption of fat-soluble nutrients. Signaling in pancreatic cells that lead to inflammation may be influenced by fatty acids (FAs) through diet and de novo lipogenesis. Here, we investigated the relationship between plasma FA composition in CP with heterogeneity of etiology and complications of CP. MATERIALS AND METHODS Blood and clinical parameters were collected from subjects with CP (n = 47) and controls (n = 22). Plasma was analyzed for FA composition using gas chromatography and compared between controls and CP and within CP. RESULTS Palmitic acid increased, and linoleic acid decreased in CP compared with controls. Correlations between age or body mass index and FAs are altered in CP compared with controls. Diabetes, pancreatic calcifications, and substance usage, but not exocrine pancreatic dysfunction, were associated with differences in oleic acid and linoleic acid relative abundance in CP. De novo lipogenesis index was increased in the plasma of subjects with CP compared with controls and in calcific CP compared with noncalcific CP. CONCLUSIONS Fatty acids that are markers of de novo lipogenesis and linoleic acid are dysregulated in CP depending on the etiology or complication. These results enhance our understanding of CP and highlight potential pathways targeting FAs for treating CP.
Collapse
Affiliation(s)
- Kristyn Gumpper-Fedus
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Olivia Crowe
- The Ohio State University College of Medicine, Columbus, OH
| | - Phil A. Hart
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Valentina Pita-Grisanti
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
- Program of Human Nutrition, College of Education and Human Ecology, The Ohio State University Columbus, OH
| | - Ericka Velez-Bonet
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
- Program of Human Nutrition, College of Education and Human Ecology, The Ohio State University Columbus, OH
| | - Martha A. Belury
- Department of Food Science and Technology, College of Food, Agriculture, and Environmental Sciences, The Ohio State University Columbus, OH
| | - Mitchell Ramsey
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Rachel M Cole
- Department of Food Science and Technology, College of Food, Agriculture, and Environmental Sciences, The Ohio State University Columbus, OH
| | - Niharika Badi
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Stacey Culp
- Department of Biomedical Informatics, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Alice Hinton
- Division of Biostatistics, College of Public Heath, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Luis Lara
- Department of Internal Medicine, Division of Digestive Diseases, University of Cincinnati, College of Medicine, Cincinnati, OH
| | - Somashekar G. Krishna
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Darwin L. Conwell
- Department of Internal Medicine, University of Kentucky College of Medicine, Lexington, KY
| | - Zobeida Cruz-Monserrate
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| |
Collapse
|
7
|
Loukil I, Aguilera EC, Vachon A, Léveillé P, Plourde M. Sex, Body Mass Index, and APOE4 Increase Plasma Phospholipid-Eicosapentaenoic Acid Response During an ω-3 Fatty Acid Supplementation: A Secondary Analysis. J Nutr 2024; 154:1561-1570. [PMID: 38513888 PMCID: PMC11130699 DOI: 10.1016/j.tjnut.2024.03.013] [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: 09/14/2023] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND The brain is concentrated with omega (ω)-3 (n-3) fatty acids (FAs), and these FAs must come from the plasma pool. The 2 main ω-3 FAs, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), must be in the form of nonesterified fatty acid (NEFA) or esterified within phospholipids (PLs) to reach the brain. We hypothesized that the plasma concentrations of these ω-3 FAs can be modulated by sex, body mass index (BMI, kg/m2), age, and the presence of the apolipoprotein (APO) E-ε4 allele in response to the supplementation. OBJECTIVES This secondary analysis aimed to determine the concentration of EPA and DHA within plasma PL and in the NEFA form after an ω-3 FA or a placebo supplementation and to investigate whether the factors change the response to the supplement. METHODS A randomized, double-blind, placebo-controlled trial was conducted. Participants were randomly assigned to either an ω-3 FA supplement (DHA 0.8 g and EPA 1.7 g daily) or to a placebo for 6 mo. FAs from fasting plasma samples were extracted and subsequently separated into PLs with esterified FAs and NEFAs using solid-phase extraction. DHA and EPA concentrations in plasma PLs and as NEFAs were quantified using gas chromatography. RESULTS EPA and DHA concentrations in the NEFA pool significantly increased by 31%-71% and 42%-82%, respectively, after 1 and 6 mo of ω-3 FA supplementation. No factors influenced plasma DHA and EPA responses in the NEFA pool. In the plasma PL pool, DHA increased by 83%-109% and EPA by 387%-463% after 1 and 6 mo of ω-3 FA supplementation. APOE4 carriers, females, and individuals with a BMI of ≤25 had higher EPA concentrations than noncarriers, males, and those with a BMI of >25, respectively. CONCLUSIONS The concentration of EPA in plasma PLs are modulated by APOE4, sex, and BMI. These factors should be considered when designing clinical trials involving ω-3 FA supplementation. This trial was registered at clinicaltrials.gov as NCT01625195.
Collapse
Affiliation(s)
- Insaf Loukil
- Département de médecine/service de gériatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada
| | - Ester Cisneros Aguilera
- Département de médecine/service de gériatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada
| | - Annick Vachon
- Département de médecine/service de gériatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada
| | - Pauline Léveillé
- Département de médecine/service de gériatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada
| | - Mélanie Plourde
- Département de médecine/service de gériatrie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Centre de recherche sur le vieillissement, Sherbrooke, Quebec, Canada.
| |
Collapse
|
8
|
Pontifex MG, Vauzour D, Muller M. Sexual dimorphism in the context of nutrition and health. Proc Nutr Soc 2024; 83:109-119. [PMID: 37665115 DOI: 10.1017/s0029665123003610] [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] [Indexed: 09/05/2023]
Abstract
Diets and dietary constituents that we consume have a considerable impact on disease risk. Intriguingly these effects may be modulated to some extent by sex. Lack of female representation in nutritional studies as well as a lack of stratification by sex has and continues to limit our understanding of these sex × diet interactions. Here we provide an overview of the current and available literature describing how exposure to certain dietary patterns (Western-style diet, Mediterranean diet, vegetarian/vegan, ketogenic diet) and dietary constituents (dietary fibre, PUFA and plant bioactive) influences disease risk in a sex-specific manner. Interestingly, these sex differences appear to be highly disease-specific. The identification of such sex differences in response to diet stresses the importance of sex stratification in nutritional research.
Collapse
Affiliation(s)
| | - David Vauzour
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
| | - Michael Muller
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
| |
Collapse
|
9
|
Drysdale M, Gamberg M, Brammer J, Majowicz SE, Packull-McCormick S, Skinner K, Laird BD. Hexachlorobenzene and omega-3 fatty acid intake from traditional foods in the northern Yukon: A risk and benefit analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169205. [PMID: 38145675 DOI: 10.1016/j.scitotenv.2023.169205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/27/2023]
Abstract
A human biomonitoring study was conducted in the community of Old Crow, Yukon, in 2019, finding that levels of hexachlorobenzene (HCB) in plasma were elevated in the community relative to the general Canadian population. The aim of this study was to estimate dietary intake of both hexachlorobenzene, and the nutrient omega-3 fatty acids from locally harvested traditional foods in Old Crow, with the aim of identifying possible regional sources of exposure. A stochastic model was constructed to estimate intake of both hexachlorobenzene and the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Average predicted hexachlorobenzene exposure levels from traditional food consumption in Old Crow were below the tolerable daily intake of 1600-1700 ng/kg body weight/day in both average (18 ng/kg body weight/day) and short-term maximum (27 ng/kg body weight/day) exposure models. The primary contributors to average hexachlorobenzene intake were caribou fat, bone marrow, ribs, and kidneys, and Chinook salmon muscle. Average estimated dietary EPA + DHA intake levels from traditional foods were below the recommendation of 2.1 to 3.2 g of EPA + DHA per week in the average (1.6 g/week) exposure model, but above this recommendation in the short-term maximum model (3.3 g/week). The primary contributors to average EPA + DHA intake were the meat of Chinook, coho, and, chum salmon muscle, and whitefish muscle and eggs. The results of this study support the message that traditional foods continue to be an important source of nutrients and other health benefits and that the health benefits of traditional foods generally outweigh contaminant risks.
Collapse
Affiliation(s)
- Mallory Drysdale
- School of Public Health and Health Systems, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Mary Gamberg
- Gamberg Consulting, P.O. Box 11267, Whitehorse, Yukon Y1A 6N5, Canada
| | - Jeremy Brammer
- Vuntut Gwitchin Government, Old Crow, Yukon Y0B 1N0, Canada
| | - Shannon E Majowicz
- School of Public Health and Health Systems, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Sara Packull-McCormick
- School of Public Health and Health Systems, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Kelly Skinner
- School of Public Health and Health Systems, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Brian D Laird
- School of Public Health and Health Systems, Faculty of Applied Health Sciences, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
| |
Collapse
|
10
|
Castellanos-Perilla N, Borda MG, Aarsland D, Barreto GE. An analysis of omega-3 clinical trials and a call for personalized supplementation for dementia prevention. Expert Rev Neurother 2024; 24:313-324. [PMID: 38379273 PMCID: PMC11090157 DOI: 10.1080/14737175.2024.2313547] [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: 05/25/2023] [Accepted: 01/29/2024] [Indexed: 02/22/2024]
Abstract
INTRODUCTION Targeted interventions are needed to delay or prevent the onset of neurodegenerative diseases. Poor dietary habits are associated with cognitive decline, highlighting the benefits of a healthy diet with fish and polyunsaturated fatty acids (PUFAs). Intake of omega-3 PUFAs docosahexaenoic acid (DHA), α-linolenic acid (ALA) and eicosapentaenoic acid (EPA) is linked with healthy aging, cardiovascular benefits, and reduced risk of Alzheimer's disease. Although omega-3 has health benefits, its intake is often inadequate and insufficient in modern diets. Although fish oil supplements offer an alternative source, inconsistent results from clinical trials raise questions about the factors determining their success. AREAS COVERED In this this review, the authors discuss the aforementioned determining factors and highlight strategies that could enhance the effectiveness of omega-3 PUFAs interventions for dementia and cognitive decline. Moreover, the authors provide suggestions for potential future research. EXPERT OPINION Factors such as diet, lifestyle, and genetic predisposition can all influence the effectiveness of omega-3 supplementation. When implementing clinical trials, it is crucial to consider these factors and recognize their potential impact on the interpretation of results. It is important to study each variable independently and the interactions between them.
Collapse
Affiliation(s)
- Nicolás Castellanos-Perilla
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
- Centre for Age-Related Medicine (SESAM), Stavanger University Hospital, Stavanger, Norway
- Semillero de Neurociencias y Envejecimiento, Ageing Institute, Medical School, Pontificia Universidad Javeriana, Bogotá, Colombia
- Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Miguel Germán Borda
- Centre for Age-Related Medicine (SESAM), Stavanger University Hospital, Stavanger, Norway
- Semillero de Neurociencias y Envejecimiento, Ageing Institute, Medical School, Pontificia Universidad Javeriana, Bogotá, Colombia
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Dag Aarsland
- Centre for Age-Related Medicine (SESAM), Stavanger University Hospital, Stavanger, Norway
- Department of Old Age Psychiatry, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, UK
| | - George E. Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland
| |
Collapse
|
11
|
Derbyshire EJ, Birch CS, Bonwick GA, English A, Metcalfe P, Li W. Optimal omegas - barriers and novel methods to narrow omega-3 gaps. A narrative review. Front Nutr 2024; 11:1325099. [PMID: 38371504 PMCID: PMC10869628 DOI: 10.3389/fnut.2024.1325099] [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: 10/20/2023] [Accepted: 01/05/2024] [Indexed: 02/20/2024] Open
Abstract
Dietary intakes of omega-3 long chain polyunsaturated fatty acids (O3LC-PUFAs) such as eicosapentaenoic and docosahexaenoic acid are central to development and health across the life course. O3LC-PUFAs have been linked to neurological development, maternal and child health and the etiology of certain non-communicable diseases including age-related cognitive decline, cardiovascular disease, and diabetes. However, dietary inadequacies exist in the United Kingdom and on a wider global scale. One predominant dietary source of O3LC-PUFAs is fish and fish oils. However, growing concerns about overfishing, oceanic contaminants such as dioxins and microplastics and the trend towards plant-based diets appear to be acting as cumulative barriers to O3LC-PUFAs from these food sources. Microalgae are an alternative provider of O3LC-PUFA-rich oils. The delivery of these into food systems is gaining interest. The present narrative review aims to discuss the present barriers to obtaining suitable levels of O3LC-PUFAs for health and wellbeing. It then discusses potential ways forward focusing on innovative delivery methods to utilize O3LC-PUFA-rich oils including the use of fortification strategies, bioengineered plants, microencapsulation, and microalgae.
Collapse
Affiliation(s)
| | | | | | | | - Phil Metcalfe
- Efficiency Technologies Limited, Milton Keynes, England, United Kingdom
| | - Weili Li
- University of Chester, Chester, United Kingdom
| |
Collapse
|
12
|
Wang X, Ma R, Shi R, Qin H, Chen W, Yu Z, Ding Y, Peng C, Shi Y. Sex differences in the association between plasma polyunsaturated fatty acids levels and moderate-to-severe plaque psoriasis severity: a cross-sectional and longitudinal study. J Transl Med 2023; 21:834. [PMID: 37986112 PMCID: PMC10662930 DOI: 10.1186/s12967-023-04726-y] [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: 09/22/2023] [Accepted: 11/13/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Psoriasis is a chronic inflammatory skin disease with metabolic abnormalities serving as important contributors for pathogenesis and progression. Polyunsaturated fatty acids (PUFAs) have been found to be associated with human diseases, including psoriasis. However, differences and controversies exist regarding their content and roles. METHODS Plasma PUFAs concentrations were measured in 296 patients with moderate-to-severe plaque psoriasis from the Shanghai Psoriasis Effectiveness Evaluation CoHort. Disease severity was assessed using Clinician-Reported Outcomes (ClinROs), including Psoriasis Area and Severity Index (PASI), Body Surface Area (BSA) and Physician Global Assessment (PGA), as well as Patient-Reported Outcomes (PROs), including Patient Global Assessment (PtGA) and Dermatology Life Quality Index (DLQI). Multivariate generalized linear regression models (GLMs), subgroup and interaction analysis, and restricted cubic spline were used to estimate the cross-sectional associations between PUFAs concentrations and disease severity. Longitudinal assessments of PASI scores and PASI response were conducted at a 12-week follow-up. Associations between baseline plasma PUFAs levels and prospective PASI scores or PASI response were assessed using multivariate GLMs or logistic regression models. RESULTS Males suffered severer psoriasis and presented lower plasma docosahexaenoic acid (DHA) and arachidonic acid (ARA) levels compared to females. Among males, plasma eicosadienoic acid (EDA) level was positively associated with PASI, BSA and PGA scores, while total Omega-3 PUFAs and/or eicosapentaenoic acid (EPA) levels exhibited non-linear associations with PASI and/or BSA scores. α-Linolenic acid (ALA) was negatively, whereas ARA was positively, associated with DLQI scores. In females, Omega-3 PUFAs, including EPA, DHA, and total Omega-3 PUFAs, showed inverse associations with PASI and BSA scores. Longitudinally, plasma total Omega-6 PUFAs were positively associated with the likelihood of achieving PASI 100 at 12 weeks in males. In females, concentrations of dohomo-γ-linolenic acid were prospectively associated with an increase in PASI scores, and DHA was associated with the likelihood of achieving PASI 75 and PASI 90 decline. CONCLUSIONS Sex differences cross-sectionally exist in disease severity and plasma PUFAs levels. The association between PUFAs and psoriasis severity also varies cross-sectionally and longitudinally between males and females. Sex differences should be considered when studying the function and clinical application of PUFAs in psoriasis.
Collapse
Affiliation(s)
- Xin Wang
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Rui Ma
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Rongcan Shi
- Shanghai Skin Disease Clinical College, Fifth Clinical Medical College, Anhui Medical University, Shanghai, China
| | - Hui Qin
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Wenjuan Chen
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Zengyang Yu
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
- Department of Dermatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yangfeng Ding
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China
| | - Chen Peng
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China.
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China.
| | - Yuling Shi
- Department of Dermatology, Shanghai Skin Disease Hospital, Tongji University School of Medicine, 1278 Baode Road, Jing'an District, Shanghai, 200443, China.
- Institute of Psoriasis, Tongji University School of Medicine, Shanghai, China.
- Shanghai Skin Disease Clinical College, Fifth Clinical Medical College, Anhui Medical University, Shanghai, China.
| |
Collapse
|
13
|
Yui K, Imataka G, Shiohama T. Lipid Peroxidation of the Docosahexaenoic Acid/Arachidonic Acid Ratio Relating to the Social Behaviors of Individuals with Autism Spectrum Disorder: The Relationship with Ferroptosis. Int J Mol Sci 2023; 24:14796. [PMID: 37834244 PMCID: PMC10572946 DOI: 10.3390/ijms241914796] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/11/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023] Open
Abstract
Polyunsaturated fatty acids (PUFAs) undergo lipid peroxidation and conversion into malondialdehyde (MDA). MDA reacts with acetaldehyde to form malondialdehyde-modified low-density lipoprotein (MDA-LDL). We studied unsettled issues in the association between MDA-LDL and the pathophysiology of ASD in 18 individuals with autism spectrum disorders (ASD) and eight age-matched controls. Social behaviors were assessed using the social responsiveness scale (SRS). To overcome the problem of using small samples, adaptive Lasso was used to enhance the interpretability accuracy, and a coefficient of variation was used for variable selections. Plasma levels of the MDA-LDL levels (91.00 ± 16.70 vs. 74.50 ± 18.88) and the DHA/arachidonic acid (ARA) ratio (0.57 ± 0.16 vs. 0.37 ± 0.07) were significantly higher and the superoxide dismutase levels were significantly lower in the ASD group than those in the control group. Total SRS scores in the ASD group were significantly higher than those in the control group. The unbeneficial DHA/ARA ratio induced ferroptosis via lipid peroxidation. Multiple linear regression analysis and adaptive Lasso revealed an association of the DHA/ARA ratio with total SRS scores and increased MDA-LDL levels in plasma, resulting in neuronal deficiencies. This unbeneficial DHA/ARA-ratio-induced ferroptosis contributes to autistic social behaviors and is available for therapy.
Collapse
Affiliation(s)
- Kunio Yui
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8677, Japan;
- Department of Pediatrics, Dokkyo Medical University, Mibu 321-0293, Japan;
| | - George Imataka
- Department of Pediatrics, Dokkyo Medical University, Mibu 321-0293, Japan;
| | - Tadashi Shiohama
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba 260-8677, Japan;
| |
Collapse
|
14
|
Lai JQ, Chen XR, Lin S, Chen CN, Zheng XX. Progress in research on the role of clinical nutrition in treating traumatic brain injury affecting the neurovascular unit. Nutr Rev 2023; 81:1051-1062. [PMID: 36409999 DOI: 10.1093/nutrit/nuac099] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023] Open
Abstract
The neurovascular unit (NVU) is composed of neurons, glial cells, and blood vessels. NVU dysfunction involves the processes of neuroinflammation, and microcirculatory disturbances, as well as neuronal injury after traumatic brain injury (TBI). Traditional anti-inflammatory drugs have limited efficacy in improving the prognosis of TBI. Thus, treatments that target NVU dysfunction may provide a breakthrough. A large number of clinical studies have shown that the nutritional status of patients with TBI was closely related to their conditions and prognoses. Nutrient complexes and complementary therapies for the treatment of TBI are therefore being implemented in many preclinical studies. Importantly, the mechanism of action for this treatment may be related to repair of NVU dysfunction by ensuring adequate omega-3 fatty acids, curcumin, resveratrol, apigenin, vitamins, and minerals. These nutritional supplements hold promise for translation to clinical therapy. In addition, dietary habits also play an important role in the rehabilitation of TBI. Poor dietary habits may worsen the pathology and prognosis of TBI. Adjusting dietary habits, especially with a ketogenic diet, may improve outcomes in patients with TBI. This article discusses the impact of clinical nutrition on NVU dysfunction after TBI, focusing on nutritional complexes and dietary habits.
Collapse
Affiliation(s)
- Jin-Qing Lai
- Department of Neurosurgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China. Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Xiang-Rong Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China. Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Shu Lin
- Department of Neurosurgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China. Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China. Neuroendocrinology Group, Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, Australia
| | - Chun-Nuan Chen
- Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Xuan-Xuan Zheng
- Department of Neurosurgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| |
Collapse
|
15
|
Sanders AE, Weatherspoon ED, Ehrmann BM, Soma PS, Shaikh SR, Preisser JS, Ohrbach R, Fillingim RB, Slade GD. Circulating Polyunsaturated Fatty Acids and Pain Intensity in Five Chronic Pain Conditions. THE JOURNAL OF PAIN 2023; 24:478-489. [PMID: 36273777 PMCID: PMC9991951 DOI: 10.1016/j.jpain.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 11/07/2022]
Abstract
Pain intensity is well-known to be influenced by a wide range of biobehavioral variables. Nutritional factors, however, have not been generally considered for their potential importance. This cross-sectional study examined associations between erythrocyte omega-6 (n-6) and omega-3 (n-3) polyunsaturated fatty acids (PUFAs) and pain intensity in 605 adults. Pain intensity was computed on a 0 to 100 numeric rating scale from questions about 5 chronic pain conditions: orofacial pain, headache, low back pain, irritable bowel syndrome, and bodily pain. For each pain condition, multiple linear regression tested the hypothesis that a higher ratio of n-6 arachidonic acid to the sum of n-3 eicosapentaenoic acid and docosahexaenoic acid (AA/(EPA+DHA) was associated with greater pain intensity. In covariate-adjusted analysis, orofacial pain intensity increased 5.7 points (95% CI: 1.4, 9.9) per unit increase in n-6/n-3 PUFA ratio. Likewise, a 1 unit increase in n-6/n-3 PUFA ratio was associated with significant increases in pain intensity (range 5-8 points) of headache pain, low back pain, and bodily pain, but not abdominal pain. Separate multiple linear regression models investigated the independent strength of association of individual PUFAs to the intensity of each pain condition. Overall, n-3 docosahexaenoic acid was most strongly, and inversely, associated with pain intensity. PERSPECTIVE: A higher ratio of n-6/n-3 long-chain polyunsaturated fatty acids was associated greater pain intensity for orofacial pain, headache, low back pain, and bodily pain, but not abdominal pain. The n-6/n-3 PUFA ratio was more consistently associated with pain intensity than any individual constituent of the long-chain PUFA ratio.
Collapse
Affiliation(s)
- Anne E Sanders
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
| | - E Diane Weatherspoon
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Brandie M Ehrmann
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Paul S Soma
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Saame R Shaikh
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - John S Preisser
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Richard Ohrbach
- Department of Oral Diagnostic Sciences, University at Buffalo, Buffalo, New York
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence, Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida
| | - Gary D Slade
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| |
Collapse
|
16
|
Gumpper-Fedus K, Crowe O, Hart PA, Pita-Grisanti V, Velez-Bonet E, Belury MA, Ramsey M, Cole RM, Badi N, Culp S, Hinton A, Lara L, Krishna SG, Conwell DL, Cruz-Monserrate Z. Changes in Plasma Fatty Acid Abundance Related to Chronic Pancreatitis: A Pilot Study. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.05.522899. [PMID: 36711757 PMCID: PMC9881940 DOI: 10.1101/2023.01.05.522899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Objectives Chronic pancreatitis (CP) is an inflammatory disease that affects the absorption of nutrients like fats. Molecular signaling in pancreatic cells can be influenced by fatty acids (FAs) and changes in FA abundance could impact CP-associated complications. Here, we investigated FA abundance in CP compared to controls and explored how CP-associated complications and risk factors affect FA abundance. Methods Blood and clinical parameters were collected from subjects with (n=47) and without CP (n=22). Plasma was analyzed for relative FA abundance using gas chromatography and compared between controls and CP. Changes in FA abundance due to clinical parameters were also assessed in both groups. Results Decreased relative abundance of polyunsaturated fatty acids (PUFAs) and increased monounsaturated fatty acids (MUFAs) were observed in subjects with CP in a sex-dependent manner. The relative abundance of linoleic acid increased, and oleic acid decreased in CP subjects with exocrine pancreatic dysfunction and a history of substance abuse. Conclusions Plasma FAs like linoleic acid are dysregulated in CP in a sex-dependent manner. Additionally, risk factors and metabolic dysfunction further dysregulate FA abundance in CP. These results enhance our understanding of CP and highlight potential novel targets and metabolism-related pathways for treating CP.
Collapse
|
17
|
Sanders AE, Weatherspoon ED, Ehrmann BM, Soma PS, Shaikh SR, Preisser JS, Ohrbach R, Fillingim RB, Slade GD. Ratio of Omega-6/Omega-3 Polyunsaturated Fatty Acids Associated With Somatic and Depressive Symptoms in People With Painful Temporomandibular Disorder and Irritable Bowel Syndrome. THE JOURNAL OF PAIN 2022; 23:1737-1748. [PMID: 35477107 PMCID: PMC9561958 DOI: 10.1016/j.jpain.2022.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 04/27/2023]
Abstract
Somatic symptom disturbance is among the strongest predictors of painful temporomandibular disorder (TMD). Related psychological constructs, such as anxiety and depression, respond therapeutically to omega-3 polyunsaturated fatty acids (PUFAs) in clinical trials. This cross-sectional study investigated associations between the omega-6/omega-3 PUFA ratio and somatic symptom disturbance and depressive symptoms in a community-based sample of 501 adults and determined whether these associations differed between adults with and without TMD or irritable bowel syndrome (IBS). Liquid chromatography tandem mass spectrometry quantified PUFAs in circulating erythrocytes. Somatic symptoms and depression were quantified using Symptom Checklist-90-Revised subscales. Presence or absence of TMD and IBS, respectively, were determined by clinical examination and Rome III screening questions. The standardized beta coefficient for the omega-6/omega-3 long-chain PUFA ratio was 0.26 (95% confidence limits (CL): 0.08, 0.43) in a multivariable linear regression model in which somatic symptom disturbance was the dependent variable. When modelling depressive symptoms as the dependent variable, the standardized beta coefficient was 0.17 (95% CL:0.01, 0.34). Both associations were stronger among TMD cases and IBS cases than among non-cases. Future randomized control trials that lower the omega-6/omega-3 PUFA ratio could consider somatic or depressive symptoms as a therapeutic target for TMD or IBS pain. PERSPECTIVE: In people with TMD or IBS, a high n-6/n-3 PUFA ratio was positively associated with somatic symptom disturbance and depressive symptoms. Both measures of psychological distress were elevated in people with painful TMD and IBS. Future randomized clinical trials will determine whether lowering the n-6/n-3 ratio is therapeutic for pain.
Collapse
Affiliation(s)
- Anne E Sanders
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, North Carolina.
| | - E Diane Weatherspoon
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina
| | - Brandie M Ehrmann
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina
| | - Paul S Soma
- Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina
| | - Saame R Shaikh
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - John S Preisser
- Department of Biostatistics, University of North Carolina, Chapel Hill, North Carolina
| | - Richard Ohrbach
- Department of Oral Diagnostic Sciences, University at Buffalo, Buffalo, New York
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, Florida; Pain Research and Intervention Center of Excellence, Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, Florida
| | - Gary D Slade
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina, Chapel Hill, North Carolina
| |
Collapse
|
18
|
Sanders AE, Weatherspoon ED, Ehrmann BM, Soma PS, Shaikh SR, Preisser JS, Ohrbach R, Fillingim RB, Slade GD. Circulating polyunsaturated fatty acids, pressure pain thresholds, and nociplastic pain conditions. Prostaglandins Leukot Essent Fatty Acids 2022; 184:102476. [PMID: 35908377 PMCID: PMC10363286 DOI: 10.1016/j.plefa.2022.102476] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/22/2022] [Accepted: 07/22/2022] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Polyunsaturated fatty acids (PUFAs) play a role in pain regulation. This study sought to determine whether free PUFAs found in red blood cells also play a role in nociceptive processing. We examined associations between circulating PUFAs and nociceptive thresholds to noxious mechanical stimuli. We also determined whether nociceptive thresholds were associated with nociplastic pain conditions. METHODS This cross-sectional study used stored red bloods cells and data from 605 adult participants in the OPPERA-2 study of chronic overlapping pain conditions. In OPPERA-2 adults completed quantitative sensory testing in which pressure algometry measured deep muscular tissue sensitivity at six anatomical sites. Standardized protocols classified adults for presence or absence of five nociplastic pain conditions: temporomandibular disorder, headache, low back pain, irritable bowel syndrome and fibromyalgia. Liquid chromatography tandem mass spectroscopy quantified erythrocyte PUFAs. We conducted three sets of analyses. First, a multivariable linear regression model assessed the association between n-6/n-3 PUFA ratio and the number of overlapping nociplastic pain conditions. Second, a series of 36 multivariable linear regression models assessed covariate-adjusted associations between PUFAs and nociceptive thresholds at each of six anatomical sites. Third, a series of 30 multivariable linear regression models assessed covariate-adjusted associations between nociceptive thresholds at six anatomical sites and each of five pain conditions. RESULTS In multiple linear regression, each unit increase in n-6/n-3 PUFA ratio was associated with more pain conditions (β = 0.30, 95% confidence limits: 0.07, 0.53, p = 0.012). Omega-6 linoleic acid and arachidonic acid were negatively associated with lower nociceptive thresholds at three and at five, respectively, anatomical sites. In contrast, omega-3 alpha-linolenic acid, eicosapentaenoic acid, docosahexaenoic acid and the n-6/n-3 PUFA ratio were not associated with nociceptive thresholds at any site. Pain cases had significantly lower nociceptive thresholds than non-case controls at all anatomical sites. CONCLUSION A higher n-6/n-3 PUFA ratio was associated with more pain conditions. Omega-6 PUFAs may promote a generalized upregulation of nociceptive processing.
Collapse
Affiliation(s)
- Anne E Sanders
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America.
| | - E Diane Weatherspoon
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Brandie M Ehrmann
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Paul S Soma
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Saame R Shaikh
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America
| | - John S Preisser
- Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America
| | - Richard Ohrbach
- Department of Oral Diagnostic Sciences, University at Buffalo, Buffalo, NY 14260, United States of America
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL 32611, United States of America; Pain Research and Intervention Center of Excellence, Department of Community Dentistry and Behavioral Science, College of Dentistry, University of Florida, Gainesville, FL 32611, United States of America
| | - Gary D Slade
- Division of Pediatric and Public Health, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States of America
| |
Collapse
|
19
|
Hoopes LA, Clauss T, Wetherbee BM, Fox DA. Baseline Health and Nutritional Parameters of Wild Sand Tigers Sampled in Delaware Bay. JOURNAL OF AQUATIC ANIMAL HEALTH 2022; 34:101-115. [PMID: 35437805 PMCID: PMC9796768 DOI: 10.1002/aah.10156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 04/06/2022] [Indexed: 05/13/2023]
Abstract
Species-specific hematological reference values are essential for diagnosis and treatment of disease and maintaining overall health of animals. This information is lacking for many species of elasmobranchs maintained in zoos and aquaria, thus reducing the effectiveness of care for these animals. Descriptive statistics and reference intervals were calculated for hematocrit and complete blood cell counts, biochemistry and protein electrophoresis parameters, trace minerals, vitamins, heavy metals, reproductive hormones, and fatty acids in the blood of 153 wild Sand Tigers Carcharias taurus of both sexes and a range of sizes caught in Delaware Bay (Delaware, USA). Mean hematocrit, total white blood cell counts, lymphocyte differentials, glucose, phosphorus, amylase, and aspartate aminotransferase levels were significantly higher in juveniles than in adults. Levels of estradiol, progesterone, testosterone, and differences in selenium and eicosapentaenoic acid (a polyunsaturated fatty acid) between males and females suggest that they are important parameters for improving Sand Tiger breeding success in managed care. Finally, blood metal levels for arsenic, cadmium, lead, and mercury suggest low levels of contaminant exposure for Sand Tigers during their summer residence in Delaware Bay. The results of this study provide baseline health parameters for wild Sand Tigers that will aid in effective maintenance of aquarium animals and contribute to a greater understanding of the biology of these sharks and efforts to accomplish sustainable management of their populations.
Collapse
Affiliation(s)
- Lisa A. Hoopes
- Georgia Aquarium, Department of Research and Conservation225 Baker Street NorthwestAtlantaGeorgia30313USA
| | - Tonya Clauss
- Georgia Aquarium, Department of Animal and Environmental Health225 Baker Street NorthwestAtlantaGeorgia30313USA
| | - Bradley M. Wetherbee
- Department of Biological SciencesUniversity of Rhode Island9 East Alumni RoadKingstonRhode Island02881USA
- Guy Harvey Research InstituteNova Southeastern UniversityDania BeachFlorida33004USA
| | - Dewayne A. Fox
- Department of Agriculture and Natural ResourcesDelaware State University1200 North Dupont HighwayDoverDelaware19901USA
| |
Collapse
|
20
|
Burdge GC. α-linolenic acid interconversion is sufficient as a source of longer chain ω-3 polyunsaturated fatty acids in humans: An opinion. Lipids 2022; 57:267-287. [PMID: 35908848 DOI: 10.1002/lipd.12355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 01/20/2023]
Abstract
α-linolenic acid (αLNA) conversion into the functionally important ω-3 polyunsaturated fatty acids (PUFA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), has been regarded as inadequate for meeting nutritional requirements for these PUFA. This view is based on findings of small αLNA supplementation trials and stable isotope tracer studies that have been interpreted as indicating human capacity for EPA and, in particular, DHA synthesis is limited. The purpose of this review is to re-evaluate this interpretation. Markedly differing study designs, inconsistent findings and lack of trial replication preclude robust consensus regarding the nutritional adequacy of αLNA as a source of EPC and DHA. The conclusion that αLNA conversion in humans is constrained is inaccurate because it presupposes the existence of an unspecified, higher level of metabolic activity. Since capacity for EPA and DHA synthesis is the product of evolution it may be argued that the levels of EPA and DHA it maintains are nutritionally appropriate. Dietary and supra-dietary EPA plus DHA intakes confer health benefits. Paradoxically, such health benefits are also found amongst vegetarians who do not consume EPA and DHA, and for whom αLNA conversion is the primary source of ω-3 PUFA. Since there are no reported adverse effects on health or cognitive development of diets that exclude EPA and DHA, their synthesis from αLNA appears to be nutritionally adequate. This is consistent with the dietary essentiality of αLNA and has implications for developing sustainable nutritional recommendations for ω-3 PUFA.
Collapse
Affiliation(s)
- Graham C Burdge
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, UK
| |
Collapse
|
21
|
Takic M, Pokimica B, Petrovic-Oggiano G, Popovic T. Effects of Dietary α-Linolenic Acid Treatment and the Efficiency of Its Conversion to Eicosapentaenoic and Docosahexaenoic Acids in Obesity and Related Diseases. Molecules 2022; 27:molecules27144471. [PMID: 35889342 PMCID: PMC9317994 DOI: 10.3390/molecules27144471] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/06/2022] [Accepted: 07/09/2022] [Indexed: 02/06/2023] Open
Abstract
The essential fatty acid alpha-linolenic acid (ALA) is present in high amounts in oils such as flaxseed, soy, hemp, rapeseed, chia, and perilla, while stearidonic acid is abundant in echium oil. ALA is metabolized to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) by desaturases and elongases in humans. The conversion of ALA to EPA and DHA is limited, and these long-chain n−3 polyunsaturated fatty acids (PUFAs) are mainly provided from dietary sources (fish and seafood). This review provides an overview of studies that explored the effects of dietary supplementation with ALA in obesity and related diseases. The obesity-associated changes of desaturase and elongase activities are summarized, as they could influence the metabolic conversion of ALA. Generally, supplementation with ALA or ALA-rich oils leads to an increase in EPA levels and has no effect on DHA or omega-3 index. According to the literature data, stearidonic acid could enhance conversion of ALA to long-chain n−3 PUFA in obesity. Recent studies confirm that EPA and DHA intake should be considered as a primary dietary treatment strategy for improving the omega-3 index in obesity and related diseases.
Collapse
|
22
|
Analysis of Circulating Fatty Acid Profiles in Free-Ranging and Managed Care Marine Toads (Rhinella marina) with a Comparison of Whole-Blood Vial and Whole-Blood Dried Blood Spot Card Analyses. JOURNAL OF ZOOLOGICAL AND BOTANICAL GARDENS 2022. [DOI: 10.3390/jzbg3030024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This study provides novel data on circulating concentrations of whole-blood fatty acids (FAs) in marine toads (Rhinella marina) via dried blood spot (DBS) card technology as a potential amphibian model species. Free-ranging (n = 10) animals were compared to managed populations fed two diet strategies for 60 days (n = 6 per diet). Thirty-six individual FAs were analyzed, with 28 found in significant reportable quantities. Eight FA groupings were represented. Traditional whole-blood vial (WBV) FA percentages were also collected and compared to DBS after managed care for 60 days. Results showed eleven individual FAs and four FA groups were higher in free-ranging toads (n = 10; p ≤ 0.05), while three FAs and three groups were higher in managed care (n = 12; p ≤ 0.05). FA concentrations compared between DBS cards and WBV at day 60 generally agreed, although two individual FAs and one grouping were higher in DBS (p ≤ 0.05). When free-ranging FAs were analyzed by sex, four individual FAs and two groupings were higher in females, while four individual FAs and one grouping were higher in males. Understanding normal FA circulating levels and how husbandry changes them may impact amphibian health. Additionally, DBS cards may provide a convenient sampling tool for fieldwork.
Collapse
|
23
|
Duchaine CS, Fiocco AJ, Carmichael PH, Cunnane SC, Plourde M, Lampuré A, Allès B, Belleville S, Gaudreau P, Presse N, Ferland G, Laurin D. Serum ω-3 Fatty Acids and Cognitive Domains in Community-Dwelling Older Adults from the NuAge Study: Exploring the Associations with Other Fatty Acids and Sex. J Nutr 2022; 152:2117-2124. [PMID: 35575619 PMCID: PMC9445853 DOI: 10.1093/jn/nxac110] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/06/2022] [Accepted: 05/13/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Omega-3 (n-3) PUFAs are suggested to play a role in the prevention of cognitive decline. The evidence may be inconsistent due to methodologic issues, including interrelations with other long-chain (14 or more carbons) fatty acids (LCFAs) and use of sex as a confounding factor rather than an effect modifier. OBJECTIVES This study evaluated the association between serum n-3 PUFAs and performance across 4 cognitive domains, overall and by sex, while controlling for other LCFAs. METHODS In total, 386 healthy older adults (aged 77.4 ± 3.8 y; 53% females) from the Quebec Longitudinal Study on Nutrition and Successful Aging underwent a cognitive evaluation and blood sampling. Verbal and nonverbal episodic memory, executive functioning, and processing speed were evaluated. Serum LCFA concentrations were measured by gas chromatography. LCFAs were grouped according to standard fatty acid classes and factor analysis using principal component analysis (FA-PCA). Multivariate linear regression models were performed, including unadjusted and adjusted models for other LCFAs. RESULTS Higher n-3 PUFA concentrations were associated with better nonverbal memory and processing speed in fully adjusted models not including other LCFAs (βs of 0.21 and 0.19, respectively). The magnitude of these associations varied when other LCFAs were entered in the model (βs of 0.27 and 0.32, respectively) or when FA-PCA factors were considered (βs of 0.27 and 0.21, respectively). Associations with verbal episodic memory were limited to higher concentrations of EPA, whereas there was no association between n-3 PUFAs and executive functioning. Higher n-3 PUFAs were associated with better verbal and nonverbal episodic memory in females and with better executive functioning and processing speed in males. CONCLUSIONS These results suggest that other LCFAs should be considered when evaluating the association between n-3 PUFAs and cognitive performance in healthy older adults. Sex differences across cognitive domains warrant further investigation.
Collapse
Affiliation(s)
- Caroline S Duchaine
- Centre de recherche du CHU de Québec-Université Laval, VITAM-Centre de recherche en santé durable, CIUSSS-Capitale Nationale and Institut sur le vieillissement et la participation sociale des aînés, Quebec, Canada,Centre d'excellence sur le vieillissement de Québec, Quebec, Canada
| | - Alexandra J Fiocco
- Department of Psychology, Toronto Metropolitan University, Toronto, Ontario, Canada
| | | | - Stephen C Cunnane
- Centre de recherche sur le vieillissement du CIUSSS-de-l'Estrie-CHUS, Université de Sherbrooke, Quebec, Canada
| | - Mélanie Plourde
- Centre de recherche sur le vieillissement du CIUSSS-de-l'Estrie-CHUS, Université de Sherbrooke, Quebec, Canada
| | - Aurélie Lampuré
- Centre Hospitalier de l'Université de Montréal Research Center and Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Benjamin Allès
- Équipe de recherche en épidémiologie nutritionnelle, UMR U1153 Inserm/U1125 INRAE/Cnam/Université Sorbonne Paris Nord, UFR SMBH, Paris, France
| | - Sylvie Belleville
- Centre de recherche de l'Institut Universitaire de gériatrie de Montréal, CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montreal, Quebec, Canada
| | - Pierrette Gaudreau
- Centre Hospitalier de l'Université de Montréal Research Center and Faculté de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Nancy Presse
- Centre de recherche sur le vieillissement du CIUSSS-de-l'Estrie-CHUS, Université de Sherbrooke, Quebec, Canada,Centre de recherche de l'Institut Universitaire de gériatrie de Montréal, CIUSSS du Centre-Sud-de-l’Île-de-Montréal, Montreal, Quebec, Canada,Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Quebec, Canada
| | - Guylaine Ferland
- Montreal Heart Institute, Department of Nutrition, Université de Montréal, Montreal, Quebec, Canada
| | | |
Collapse
|
24
|
Gumpper-Fedus K, Hart PA, Belury MA, Crowe O, Cole RM, Pita Grisanti V, Badi N, Liva S, Hinton A, Coss C, Ramsey ML, Noonan A, Conwell DL, Cruz-Monserrate Z. Altered Plasma Fatty Acid Abundance Is Associated with Cachexia in Treatment-Naïve Pancreatic Cancer. Cells 2022; 11:910. [PMID: 35269531 PMCID: PMC8909286 DOI: 10.3390/cells11050910] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 02/04/2023] Open
Abstract
Cachexia occurs in up to 80% of pancreatic ductal adenocarcinoma (PDAC) patients and is characterized by unintentional weight loss and tissue wasting. To understand the metabolic changes that occur in PDAC-associated cachexia, we compared the abundance of plasma fatty acids (FAs), measured by gas chromatography, of subjects with treatment-naïve metastatic PDAC with or without cachexia, defined as a loss of > 2% weight and evidence of sarcopenia (n = 43). The abundance of saturated, monounsaturated, and polyunsaturated FAs was not different between subjects with cachexia and those without. Oleic acid was significantly higher in subjects with cachexia (p = 0.0007) and diabetes (p = 0.015). Lauric (r = 0.592, p = 0.0096) and eicosapentaenoic (r = 0.564, p = 0.015) acids were positively correlated with age in cachexia patients. Subjects with diabetes (p = 0.021) or both diabetes and cachexia (p = 0.092) had low palmitic:oleic acid ratios. Linoleic acid was lower in subjects with diabetes (p = 0.018) and correlated with hemoglobin (r = 0.519, p = 0.033) and albumin (r = 0.577, p = 0.015) in subjects with cachexia. Oleic or linoleic acid may be useful treatment targets or biomarkers of cachexia in patients with metastatic PDAC, particularly those with diabetes.
Collapse
Affiliation(s)
- Kristyn Gumpper-Fedus
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Phil A. Hart
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Martha A. Belury
- Program of Human Nutrition, College of Education and Human Ecology, The Ohio State University, Columbus, OH 43210, USA; (M.A.B.); (R.M.C.)
| | - Olivia Crowe
- College of Medicine, The Ohio State University, Columbus, OH 43210, USA;
| | - Rachel M. Cole
- Program of Human Nutrition, College of Education and Human Ecology, The Ohio State University, Columbus, OH 43210, USA; (M.A.B.); (R.M.C.)
| | - Valentina Pita Grisanti
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Niharika Badi
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Sophia Liva
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Alice Hinton
- Division of Biostatistics, College of Public Heath, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA;
| | - Christopher Coss
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
- Division of Pharmaceutics and Pharmacology, College of Pharmacy, The Ohio State University, Columbus, OH 43210, USA
| | - Mitchell L. Ramsey
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Anne Noonan
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Darwin L. Conwell
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| | - Zobeida Cruz-Monserrate
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (K.G.-F.); (P.A.H.); (V.P.G.); (N.B.); (M.L.R.); (D.L.C.)
- The James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; (S.L.); (C.C.); (A.N.)
| |
Collapse
|
25
|
Crawford SA, Christifano DN, Kerling EH, Gajewski BJ, Valentine CJ, Gustafson KM, Mathis NB, Camargo JT, Gibbs HD, Sullivan DK, Sands SA, Carlson SE. Validation of an abbreviated food frequency questionnaire for estimating DHA intake of pregnant women in the United States. Prostaglandins Leukot Essent Fatty Acids 2022; 177:102398. [PMID: 35063884 PMCID: PMC8825687 DOI: 10.1016/j.plefa.2022.102398] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/03/2022] [Accepted: 01/06/2022] [Indexed: 02/08/2023]
Abstract
Docosahexaenoic acid (DHA) intake was estimated in pregnant women between 12- and 20-weeks' gestation using the National Cancer Institute's (NCI) Diet History Questionnaire-II (DHQ-II) and a 7-question screener designed to capture DHA intake (DHA Food Frequency Questionnaire, DHA-FFQ). Results from both methods were compared to red blood cell phospholipid DHA (RBC-DHA) weight percent of total fatty acids. DHA intake from the DHA-FFQ was more highly correlated with RBC-DHA (rs=0.528) than the DHQ-II (rs=0.352). Moreover, the DHA-FFQ allowed us to obtain reliable intake data from 1355 of 1400 participants. The DHQ-II provided reliable intake for only 847 of 1400, because many participants only partially completed it and it was not validated for Hispanic participants. Maternal age, parity, and socioeconomic status (SES) were also significant predictors of RBC-DHA. When included with estimated intake from the DHA-FFQ, the model accounted for 36% of the variation in RBC-DHA.
Collapse
Affiliation(s)
- S A Crawford
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - D N Christifano
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America; The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, United States of America
| | - E H Kerling
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - B J Gajewski
- The University of Kansas Medical Center, Department of Biostatistics & Data Science, Kansas City, KS, United States of America
| | - C J Valentine
- Banner University Medical Center, The University of Arizona, Department of Pediatrics, Tucson, AZ, United States of America
| | - K M Gustafson
- The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, United States of America
| | - N B Mathis
- The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, United States of America
| | - J T Camargo
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - H D Gibbs
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - D K Sullivan
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - S A Sands
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America
| | - S E Carlson
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, United States of America.
| |
Collapse
|
26
|
Frankhouser DE, Steck S, Sovic MG, Belury MA, Wang Q, Clinton SK, Bundschuh R, Yan PS, Yee LD. Dietary omega-3 fatty acid intake impacts peripheral blood DNA methylation -anti-inflammatory effects and individual variability in a pilot study. J Nutr Biochem 2022; 99:108839. [PMID: 34411715 PMCID: PMC9142761 DOI: 10.1016/j.jnutbio.2021.108839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/27/2021] [Accepted: 08/10/2021] [Indexed: 01/03/2023]
Abstract
Omega-3 or n-3 polyunsaturated fatty acids (PUFAs) are widely studied for health benefits that may relate to anti-inflammatory activity. However, mechanisms mediating an anti-inflammatory response to n-3 PUFA intake are not fully understood. Of interest is the emerging role of fatty acids to impact DNA methylation (DNAm) and thereby modulate mediating inflammatory processes. In this pilot study, we investigated the impact of n-3 PUFA intake on DNAm in inflammation-related signaling pathways in peripheral blood mononuclear cells (PBMCs) of women at high risk of breast cancer. PBMCs of women at high risk of breast cancer (n=10) were obtained at baseline and after 6 months of n-3 PUFA (5 g/d EPA+DHA dose arm) intake in a previously reported dose finding trial. DNA methylation of PBMCs was assayed by reduced representation bisulfite sequencing (RRBS) to obtain genome-wide methylation profiles at the single nucleotide level. We examined the impact of n-3 PUFA on genome-wide DNAm and focused upon a set of candidate genes associated with inflammation signaling pathways and breast cancer. We identified 24,842 differentially methylated CpGs (DMCs) in gene promoters of 5507 genes showing significant enrichment for hypermethylation in both the candidate gene and genome-wide analyses. Pathway analysis identified significantly hypermethylated signaling networks after n-3 PUFA treatment, such as the Toll-like Receptor inflammatory pathway. The DNAm pattern in individuals and the response to n-3 PUFA intake are heterogeneous. PBMC DNAm profiling suggests a mechanism whereby n-3 PUFAs may impact inflammatory cascades associated with disease processes including carcinogenesis.
Collapse
Affiliation(s)
- David E Frankhouser
- Biomedical Sciences Graduate Program, The Ohio State University College of Medicine, 370 W. 9th Avenue, Columbus OH 43210, USA
| | - Sarah Steck
- Comprehensive Cancer Center, The Ohio State University, 460 W. 10th Avenue Columbus OH 43210, USA
| | - Michael G Sovic
- Comprehensive Cancer Center, The Ohio State University, 460 W. 10th Avenue Columbus OH 43210, USA
| | - Martha A Belury
- Department of Human Sciences, The Ohio State University, 281 W Lane Ave, Columbus OH 43210, USA
| | - Qianben Wang
- Department of Cancer Biology and Genetics, The Ohio State University College of Medicine, 484 W 12th Avenue, Columbus, OH 43210, USA
| | - Steven K Clinton
- Comprehensive Cancer Center, The Ohio State University, 460 W. 10th Avenue Columbus OH 43210, USA,Department of Internal Medicine, The Ohio State University College of Medicine, 370 W 9th Avenue, Columbus OH 43210, USA
| | - Ralf Bundschuh
- Departments of Physics and Chemistry & Biochemistry, The Ohio State University, 281 W Lane Ave, Columbus OH 43210, USA,Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, 370 W 9th Avenue, Columbus OH 43210, USA
| | - Pearlly S Yan
- Comprehensive Cancer Center, The Ohio State University, 460 W. 10th Avenue Columbus OH 43210, USA,Division of Hematology, Department of Internal Medicine, The Ohio State University College of Medicine, 370 W 9th Avenue, Columbus OH 43210, USA
| | - Lisa D Yee
- Department of Surgery, The Ohio State University College of Medicine, 370 W 9th Avenue, Columbus OH 43210, USA
| |
Collapse
|
27
|
Wang C, Murphy J, Delaney KZ, Khor N, Morais JA, Tsoukas MA, Lowry DE, Mutch DM, Santosa S. Association between rs174537 FADS1 polymorphism and immune cell profiles in abdominal and femoral subcutaneous adipose tissue: an exploratory study in adults with obesity. Adipocyte 2021; 10:124-130. [PMID: 33595419 PMCID: PMC7894460 DOI: 10.1080/21623945.2021.1888470] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Fatty acid desaturase 1 (FADS1) polymorphisms alter fatty acid content in subcutaneous adipose tissue (SAT); however, existing evidence is limited and conflicting regarding the association between FADS1 variants and SAT inflammatory status. To advance this area, we conducted an exploratory study to investigate whether the common rs174537 polymorphism in FADS1 was associated with immune cell profiles in abdominal and femoral SAT in individuals with obesity. FADS1 gene expression and immune cell profiles in SAT depots were assessed by qPCR and flow cytometry, respectively. Although FADS1 gene expression was associated with genotype, no associations were observed with immune cell profiles in either depot. Our study provides additional evidence that rs174537 in FADS1 has minimal impact on inflammatory status in obese SAT.
Collapse
Affiliation(s)
- Chenxuan Wang
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada
| | - Jessica Murphy
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Canada
- Metabolism, Obesity, and Nutrition Lab, PERFORM Centre, Concordia University, Montreal, Canada
- Centre de recherche - Axe maladies chroniques, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Ile-de-Montréal, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada
| | - Kerri Z. Delaney
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Canada
- Metabolism, Obesity, and Nutrition Lab, PERFORM Centre, Concordia University, Montreal, Canada
- Centre de recherche - Axe maladies chroniques, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Ile-de-Montréal, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada
| | - Natalie Khor
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Canada
- Metabolism, Obesity, and Nutrition Lab, PERFORM Centre, Concordia University, Montreal, Canada
- Centre de recherche - Axe maladies chroniques, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Ile-de-Montréal, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada
| | - José A. Morais
- Division of Geriatric Medicine, McGill University Health Centre, Montreal, Canada
| | - Michael A. Tsoukas
- Division of Endocrinology, Department of Medicine, McGill University, Montréal, Canada
| | - Dana E. Lowry
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada
| | - David M. Mutch
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada
| | - Sylvia Santosa
- Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Canada
- Metabolism, Obesity, and Nutrition Lab, PERFORM Centre, Concordia University, Montreal, Canada
- Centre de recherche - Axe maladies chroniques, Centre intégré universitaire de santé et de services sociaux du Nord-de-l'Ile-de-Montréal, Hôpital du Sacré-Coeur de Montréal, Montreal, Canada
| |
Collapse
|
28
|
Unger AL, Jetton TL, Kraft J. Tissue and Circulating Fatty Acids as Biomarkers to Evaluate Long-Term Fat Intake Are Tissue and Sex Dependent in CD-1 Mice. J Nutr 2021; 151:1779-1790. [PMID: 33982087 DOI: 10.1093/jn/nxab079] [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: 12/04/2020] [Revised: 01/27/2021] [Accepted: 03/01/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND There is currently no consensus on which tissues are optimal for assessing specific diet-derived fatty acids (FAs) as biomarkers for long-term dietary studies. OBJECTIVES This study measured the content of unique diet-derived FAs from dairy, echium, and fish in tissues (adipose, muscle, liver, erythrocyte membranes, and plasma phospholipids, cholesterol esters, triglycerides, and free fatty acids) after long-term feeding in CD-1 mice. METHODS Beginning at weaning, mice (n = 10-11/sex/diet) were fed 1 of 4 diets (40% kcal/total energy) that only differed in FA composition: control fat blend (CON), reflecting the FA profile of the average US American diet, or CON supplemented with 30% of fish oil (FO), dairy fat (DF), or echium oil (EO). After 13 mo, tissues were collected to determine FAs via gas-liquid chromatography. Tissue FAs were analyzed via 2-factor ANOVA, and relationships between FA intake and tissue content were assessed with Spearman correlations. RESULTS As anticipated, 20:5n-3 (ω-3) tissue content was ≤32-fold greater in FO- compared with CON-fed mice (P < 0.05). In addition, 20:5n-3 intake strongly correlated with its content in all tissues (ρ = 0.67-0.76; P < 0.05). Echium oil intake also influenced tissue FA content in mice as expected. For example, 18:3n-6 was ≤25-fold greater in adipose, muscle, and liver tissues of EO-fed compared with CON-fed mice (P < 0.05). Tissue content of FAs typically considered biomarkers of dairy fat intake (15:0, 16:1 t9, and 17:0) was often not greater in mice fed DF than other diet groups, although 18:2 c9, t11 content was ≤6-fold greater in tissues from DF-fed compared with CON-fed mice (P < 0.05). The content of dairy-derived FAs in blood fractions of females was up to 2-fold greater compared with males, whereas docosapentaenoic acid content was up to 1-fold greater in all blood fractions and in liver tissue of males compared with females (P < 0.05). In adipose, muscle, and liver tissue, the content of γ-linolenic acid and stearidonic acid was less than 1-fold greater in females than in males (P < 0.05). CONCLUSIONS Our study indicates that the distribution of dietary FAs is tissue and sex dependent in aged CD-1 mice. Research using FA biomarkers should assess a combination of FA biomarkers to accurately validate patterns of FA intake and source.
Collapse
Affiliation(s)
- Allison L Unger
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA
| | - Thomas L Jetton
- Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Vermont, Colchester, VT, USA
| | - Jana Kraft
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA.,Department of Medicine, Division of Endocrinology, Metabolism and Diabetes, University of Vermont, Colchester, VT, USA
| |
Collapse
|
29
|
Calder PC. Sex Differences in the Plasma Accumulation of Oxylipins in Response to Supplemental n-3 Fatty Acids. J Nutr 2021; 151:462-464. [PMID: 33484143 DOI: 10.1093/jn/nxaa421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/02/2020] [Accepted: 12/02/2020] [Indexed: 12/18/2022] Open
Affiliation(s)
- Philip C Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| |
Collapse
|
30
|
Manusama K, Balvers M, Diepeveen-de Bruin M, Headley L, Bosi R, Schwarm M, Witkamp R. In vitro dissolution behaviour and absorption in humans of a novel mixed l-lysine salt formulation of EPA and DHA. Prostaglandins Leukot Essent Fatty Acids 2021; 164:102232. [PMID: 33360684 DOI: 10.1016/j.plefa.2020.102232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 12/01/2020] [Accepted: 12/15/2020] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Supplements with eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are generally oil-based formulations containing their triacylglycerols, phospholipids or ethyl-esters (EE). Recently, a l-lysine salt of carboxylic EPA and DHA became available (Lys-FFA), which necessitated to study its oral absorption and plasma kinetics in humans. OBJECTIVES The in vitro dissolution characteristics, oral bioavailability and 48 h plasma profiles of EPA and DHA (as triacylglycerides) of Lys-FFA, relative to a commercially available oil-based EE supplement. METHODS Dissociation of the lysine from the FFAs was studied in vitro applying simulated gastric (12 h) and intestinal (3 h) conditions. In an open label, randomized, two-way cross-over design, oral administration of Lys-FFA (500 mg EPA plus 302 mg DHA) versus EE (504 mg EPA plus 378 mg DHA) was studied over 48 h, in eight female volunteers. Plasma profiles of EPA and DHA were described by Area Under the Curve (AUC; 0-12 h), Cmax and Tmax. RESULTS Dissolution studies with Lys-FFA showed complete dissociation under both conditions. In volunteers Lys-FFA showed rapid absorption and high bioavailability indicated by significant differences in both the AUC0-12hr and Cmax when compared to the EE comparator (p<0.001), with AUC0-12hr which was for EPA 5 times higher with Lys-FFA than with the EE formulation. CONCLUSION This first-in-man study of Lys-FFA demonstrated rapid absorption of EPA and DHA and a considerably higher bioavailability compared to an EE supplement under fasting conditions. The release and absorption characteristics from this solid form offer several new options in terms of formulation technology and dosing.
Collapse
Affiliation(s)
- Koen Manusama
- Division of Human Nutrition and Health, Wageningen University and Research, Wageningen, Netherlands
| | - Michiel Balvers
- Division of Human Nutrition and Health, Wageningen University and Research, Wageningen, Netherlands
| | | | - Laura Headley
- Evonik Operations GmbH, Kirschenallee, 64293 Darmstadt, Germany
| | - Roberta Bosi
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany
| | - Michael Schwarm
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany
| | - Renger Witkamp
- Division of Human Nutrition and Health, Wageningen University and Research, Wageningen, Netherlands.
| |
Collapse
|
31
|
West AL, Miles EA, Lillycrop KA, Han L, Napier JA, Calder PC, Burdge GC. Dietary supplementation with seed oil from transgenic Camelina sativa induces similar increments in plasma and erythrocyte DHA and EPA to fish oil in healthy humans. Br J Nutr 2020; 124:922-930. [PMID: 32513312 PMCID: PMC7547888 DOI: 10.1017/s0007114520002044] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/21/2020] [Accepted: 06/02/2020] [Indexed: 01/08/2023]
Abstract
EPA and DHA are required for normal cell function and can also induce health benefits. Oily fish are the main source of EPA and DHA for human consumption. However, food choices and concerns about the sustainability of marine fish stocks limit the effectiveness of dietary recommendations for EPA + DHA intakes. Seed oils from transgenic plants that contain EPA + DHA are a potential alternative source of EPA and DHA. The present study investigated whether dietary supplementation with transgenic Camelina sativa seed oil (CSO) that contained EPA and DHA was as effective as fish oil (FO) in increasing EPA and DHA concentrations when consumed as a dietary supplement in a blinded crossover study. Healthy men and women (n 31; age 53 (range 20-74) years) were randomised to consume 450 mg/d EPA + DHA provided either as either CSO or FO for 8 weeks, followed by 6 weeks washout and then switched to consuming the other test oil. Fasting venous blood samples were collected at the start and end of each supplementation period. Consuming the test oils significantly (P < 0·05) increased EPA and DHA concentrations in plasma TAG, phosphatidylcholine and cholesteryl esters. There were no significant differences between test oils in the increments of EPA and DHA. There was no significant difference between test oils in the increase in the proportion of erythrocyte EPA + DHA (CSO, 12 %; P < 0·0001 and FO, 8 %; P = 0·02). Together, these findings show that consuming CSO is as effective as FO for increasing EPA and DHA concentrations in humans.
Collapse
Affiliation(s)
- Annette L. West
- School of Human Development and Health, Faculty of Medicine, University of Southampton, SouthamptonSO16 6YD, UK
| | - Elizabeth A. Miles
- School of Human Development and Health, Faculty of Medicine, University of Southampton, SouthamptonSO16 6YD, UK
| | - Karen A. Lillycrop
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, SouthamptonSO17 1BJ, UK
| | - Lihua Han
- Department of Plant Sciences, Rothamsted Research, HarpendenAL5 2JQ, UK
| | | | - Philip C. Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, SouthamptonSO16 6YD, UK
- NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, SouthamptonSO16 6YD, UK
| | - Graham C. Burdge
- School of Human Development and Health, Faculty of Medicine, University of Southampton, SouthamptonSO16 6YD, UK
| |
Collapse
|
32
|
Gawlik NR, Anderson AJ, Makrides M, Kettler L, Gould JF. The Influence of DHA on Language Development: A Review of Randomized Controlled Trials of DHA Supplementation in Pregnancy, the Neonatal Period, and Infancy. Nutrients 2020; 12:E3106. [PMID: 33053714 PMCID: PMC7599780 DOI: 10.3390/nu12103106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/02/2020] [Accepted: 10/07/2020] [Indexed: 12/25/2022] Open
Abstract
This review summarizes randomized controlled trials (RCTs) assessing the effect of docosahexaenoic acid (DHA) supplementation in the first 1000 days on child language. Six databases were searched and RCTs were included if they involved supplementation with DHA during pregnancy, to preterm infants, or during the postpartum period, included a placebo group with less or no DHA, and reported a language outcome. We included 29 RCTs involving n = 10,405 participants from 49 publications. There was a total of 84 language measures at ages ranging from 3 months to 12 years. Of the 84 assessments, there were 4 instances where the DHA group had improved scores, and 2 instances where the DHA group had worse scores (with the majority of these significant effects found within one RCT). The remaining comparisons were null. A few RCTs that included subgroup analyses reported (inconsistent) effects. There was limited evidence that DHA supplementation had any effect on language development, although there were some rare instances of both possible positive and adverse effects, particularly within population subgroups. It is important that any subgroup effects are verified in future trials that are adequately powered to confirm such effects.
Collapse
Affiliation(s)
- Nicola R. Gawlik
- Discipline of Paediatrics, Faculty of Health and Medical Sciences, The University of Adelaide, North Terrace, Adelaide 5000, Australia; (N.R.G.); (A.J.A.); (M.M.)
| | - Amanda J. Anderson
- Discipline of Paediatrics, Faculty of Health and Medical Sciences, The University of Adelaide, North Terrace, Adelaide 5000, Australia; (N.R.G.); (A.J.A.); (M.M.)
- Women and Kids, South Australian Health and Medical Research Institute, 72 King William Road, North Adelaide 5006, Australia
| | - Maria Makrides
- Discipline of Paediatrics, Faculty of Health and Medical Sciences, The University of Adelaide, North Terrace, Adelaide 5000, Australia; (N.R.G.); (A.J.A.); (M.M.)
- Women and Kids, South Australian Health and Medical Research Institute, 72 King William Road, North Adelaide 5006, Australia
| | - Lisa Kettler
- Trinity College Gawler Inc., Alexander Avenue, Evanston South 5116, Australia;
| | - Jacqueline F. Gould
- Women and Kids, South Australian Health and Medical Research Institute, 72 King William Road, North Adelaide 5006, Australia
- School of Psychology & Discipline of Paediatrics, Faculty of Health and Medical Sciences, The University of Adelaide, North Terrace, Adelaide 5000, Australia
| |
Collapse
|
33
|
Calder PC. Eicosapentaenoic and docosahexaenoic acid derived specialised pro-resolving mediators: Concentrations in humans and the effects of age, sex, disease and increased omega-3 fatty acid intake. Biochimie 2020; 178:105-123. [PMID: 32860894 DOI: 10.1016/j.biochi.2020.08.015] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/02/2020] [Accepted: 08/20/2020] [Indexed: 12/27/2022]
Abstract
Although inflammation has a physiological role, unrestrained inflammation can be detrimental, causing tissue damage and disease. Under normal circumstances inflammation is self-limiting with induction of active resolution processes. Central to these is the generation of specialised pro-resolving lipid mediators (SPMs) from eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). These include resolvins, protectins and maresins whose activities have been well described in cell and animal models. A number of SPMs have been reported in plasma or serum in infants, children, healthy adults and individuals with various diseases, as well as in human sputum, saliva, tears, breast milk, urine, synovial fluid and cerebrospinal fluid and in human adipose tissue, skeletal muscle, hippocampus, skin, placenta, lymphoid tissues and atherosclerotic plaques. Differences in SPM concentrations have been reported between health and disease, as would be expected. However, sometimes SPM concentrations are lower in disease and sometimes they are higher. Human studies report that plasma or serum concentrations of some SPMs can be increased by increasing intake of EPA and DHA. However, the relationship of specific intakes of EPA and DHA to enhancement in the appearance of specific SPMs is not clear and needs a more thorough investigation. This is important because of the potential for EPA and DHA to be used more effectively in prevention and treatment of inflammatory conditions. If generation of SPMs represents an important mechanism of action of EPA and DHA, then more needs to be known about the most effective strategies by which EPA and DHA can increase SPM concentrations.
Collapse
Affiliation(s)
- Philip C Calder
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, United Kingdom.
| |
Collapse
|
34
|
Khasabova IA, Golovko MY, Golovko SA, Simone DA, Khasabov SG. Intrathecal administration of Resolvin D1 and E1 decreases hyperalgesia in mice with bone cancer pain: Involvement of endocannabinoid signaling. Prostaglandins Other Lipid Mediat 2020; 151:106479. [PMID: 32745525 DOI: 10.1016/j.prostaglandins.2020.106479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/07/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023]
Abstract
Pain produced by bone cancer is often severe and difficult to treat. Here we examined effects of Resolvin D1 (RvD1) or E1 (RvE1), antinociceptive products of ω-3 polyunsaturated fatty acids, on cancer-induced mechanical allodynia and heat hyperalgesia. Experiments were performed using a mouse model of bone cancer produced by implantation of osteolytic ficrosarcoma into and around the calcaneus bone. Mechanical allodynia and heat hyperalgesia in the tumor-bearing paw were assessed by measuring withdrawal responses to a von Frey monofilament and to radiant heat applied on the plantar hind paw. RvD1, RvE1, and cannabinoid receptor antagonists were injected intrathecally. Spinal content of endocannabinoids was evaluated using UPLC-MS/MS analysis. RvD1 and RvE1 had similar antinociceptive potencies. ED50s for RvD1 and RvE1 in reducing mechanical allodynia were 0.2 pg (0.53 fmol) and 0.6 pg (1.71 fmol), respectively, and were 0.3 pg (0.8 fmol) and 0.2 pg (0.57 fmol) for reducing heat hyperalgesia. Comparisons of dose-response relationships showed equal efficacy for reducing mechanical allodynia, however, efficacy for reducing heat hyperalgesia was greater for of RvD1. Using UPLC-MS/MS we determined that RvD1, but not RvE1, increased levels of the endocannabinoids Anandamide and 2-Arachidonoylglycerol in the spinal cord. Importantly, Resolvins did not alter acute nociception or motor function in naïve mice. Our data indicate, that RvD1 and RvE1 produce potent antiallodynia and antihyperalgesia in a model of bone cancer pain. RvD1 also triggers spinal upregulation of endocannabinoids that produce additional antinociception predominantly through CB2 receptors.
Collapse
Affiliation(s)
- Iryna A Khasabova
- Department of Diagnostic and Biological Sciences, University of Minnesota, School of Dentistry, Minneapolis, MN, USA
| | - Mikhail Y Golovko
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, North Dakota, USA
| | - Svetlana A Golovko
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, North Dakota, USA
| | - Donald A Simone
- Department of Diagnostic and Biological Sciences, University of Minnesota, School of Dentistry, Minneapolis, MN, USA
| | - Sergey G Khasabov
- Department of Diagnostic and Biological Sciences, University of Minnesota, School of Dentistry, Minneapolis, MN, USA.
| |
Collapse
|
35
|
de Groot RHM, Meyer BJ. ISSFAL Official Statement Number 6: The importance of measuring blood omega-3 long chain polyunsaturated fatty acid levels in research. Prostaglandins Leukot Essent Fatty Acids 2020; 157:102029. [PMID: 31740196 DOI: 10.1016/j.plefa.2019.102029] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/05/2019] [Indexed: 11/21/2022]
Abstract
A statement on measuring blood omega-3 long chain polyunsaturated fatty acid levels was developed and edited based on input from ISSFAL members and accepted by vote of the ISSFAL Board of Directors. Summary of Statement: Omega-3 long chain polyunsaturated fatty acid (n-3 LCPUFA) levels at baseline and post-intervention should be assessed and reported in future research to evaluate the efficacy of n-3 LCPUFA supplementation: b ecause; 1. there are numerous factors that affect n-3 LCPUFA levels in humans as described in the systematic literature review [1]; 2. assessing intake of n-3 LCPUFA from the diet and/or supplements is not sufficient to accurately determine n-3 LCPUFA levels in humans; 3. some studies do not provide sufficient doses of n-3 LCPUFA to produce a significant impact on bloodstream/organ content and there is substantial variability in the uptake of n-3 LPCUFA into tissues between individuals. In secondary analyses, clinical trials should consider the influence of fatty acid status (baseline, endpoint and change from baseline to endpoint) on the outcome variables.
Collapse
Affiliation(s)
- Renate H M de Groot
- Faculty of Psychology and Educational Sciences, Welten Institute, Research Centre for Learning, Teaching and Technology, Open University of the Netherlands, Valkenburgerweg 177, 6419AT Heerlen, the Netherlands
| | - Barbara J Meyer
- School of Medicine, Lipid Research Centre, Molecular Horizons, University of Wollongong and Illawarra Health & Medical Research Institute, Northfields Avenue, Wollongong, NSW 2522, Australia.
| |
Collapse
|
36
|
Platelet Responses in Cardiovascular Disease: Sex-Related Differences in Nutritional and Pharmacological Interventions. Cardiovasc Ther 2020; 2020:2342837. [PMID: 32547635 PMCID: PMC7273457 DOI: 10.1155/2020/2342837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/09/2020] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular diseases (CVD) represent one of the biggest causes of death globally, and their prevalence, aetiology, and outcome are related to genetic, metabolic, and environmental factors, among which sex- and age-dependent differences may play a key role. Among CVD risk factors, platelet hyperactivity deserves particular mention, as it is involved in the pathophysiology of main cardiovascular events (including stroke, myocardial infarction, and peripheral vascular injury) and is closely related to sex/age differences. Several determinants (e.g., hormonal status and traditional cardiovascular risk factors), together with platelet-related factors (e.g., plasma membrane composition, receptor signaling, and platelet-derived microparticles) can elucidate sex-related disparity in platelet functionality and CVD onset and outcome, especially in relation to efficacy of current primary and secondary interventional strategies. Here, we examined the state of the art concerning sex differences in platelet biology and their relationship with specific cardiovascular events and responses to common antiplatelet therapies. Moreover, as healthy nutrition is widely recognized to play a key role in CVD, we also focused our attention on specific dietary components (especially polyunsaturated fatty acids and flavonoids) and patterns (such as Mediterranean diet), which also emerged to impact platelet functions in a sex-dependent manner. These results highlight that full understanding of gender-related differences will be useful for designing personalized strategies, in order to prevent and/or treat platelet-mediated vascular damage.
Collapse
|
37
|
Patel D, Goruk S, Newell M, Chen G, Richard C, Field CJ. Feeding a Bioactive Oil Enriched in Stearidonic Acid during Early Life Influences Immune System Maturation in Neonatal Sprague-Dawley Rats. J Nutr 2020; 150:606-615. [PMID: 31722423 DOI: 10.1093/jn/nxz255] [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: 03/04/2019] [Revised: 07/09/2019] [Accepted: 09/26/2019] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Long-chain n-3 PUFAs (LCPUFAs) improve immune development and reduce atopic disease risk in infants. Stearidonic acid (SDA) can be a substrate for biosynthesis of n-3 LCPUFAs. OBJECTIVE We aimed to determine the effect of feeding an SDA-enriched diet during suckling and weaning on offspring immunity and ability to develop oral tolerance (OT). METHODS Pregnant Sprague-Dawley rats were randomly assigned to consume either SDA (3 g SDA/100 g fat) or a control (no SDA) diet, 5 d before parturition and through lactation (21 d). For the OT treatment, 10-d-old pups were fed ovalbumin (Ova; 200 μL of 8 mg/mL) or placebo daily for 5 d. At 21 d, pups (both sexes) were weaned to their respective maternal diet until 6 wk of age or killed. Systemic immunization was induced using Ova (in 3-wk-old pups) or Ova + adjuvant (in 6-wk-old pups). The effect of suckling diet (in 3-wk-old pups) or weaning diet (in 6-wk-old pups) and OT treatment on immune function (main outcome) in spleen and blood was compared using 2-factor ANOVA. RESULTS An SDA-enriched maternal diet, compared with the control diet, resulted in higher plasma phospholipid (PL) EPA (15 times higher), docosapentaenoic acid (DPA; 3 times higher), and DHA (1.3 times higher) content in 3-wk-old pups, accompanied by higher B-cell function [plasma ovalbumin-specific IgG1 (Ova-IgG1), 2 times higher] ( P < 0.05). Compared with pups fed a control diet, the splenocytes from these pups had more (23%) helper T (Th) cells (CD3+CD4+) and activated (12%) Th cells (CD4+CD28+) (P < 0.02) than controls. At 6 wk, the SDA group had 30% more CD4+CD25+ splenocytes, and when stimulated ex vivo with LPS, produced less inflammatory IL-6 (50%) and TNF-α (30%) and more immunoregulatory IL-10 (45%) cytokines (P < 0.05) than the control group. The Ova-exposed group had less (30%) plasma Ova-IgG1 than the placebo group. Splenocytes and plasma PLs from the 6-wk-old SDA group had more EPA (2x) and DPA (3.5x) (P < 0.05), but not DHA, than the control group. CONCLUSIONS Feeding SDA during lactation and weaning altered immune responses in directions believed to be beneficial.
Collapse
Affiliation(s)
- Dhruvesh Patel
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Susan Goruk
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Marnie Newell
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Guanqun Chen
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Caroline Richard
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| | - Catherine J Field
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada
| |
Collapse
|
38
|
Abdelhamid AS, Brown TJ, Brainard JS, Biswas P, Thorpe GC, Moore HJ, Deane KHO, Summerbell CD, Worthington HV, Song F, Hooper L. Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev 2020; 3:CD003177. [PMID: 32114706 PMCID: PMC7049091 DOI: 10.1002/14651858.cd003177.pub5] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Omega-3 polyunsaturated fatty acids from oily fish (long-chain omega-3 (LCn3)), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), as well as from plants (alpha-linolenic acid (ALA)) may benefit cardiovascular health. Guidelines recommend increasing omega-3-rich foods, and sometimes supplementation, but recent trials have not confirmed this. OBJECTIVES To assess the effects of increased intake of fish- and plant-based omega-3 fats for all-cause mortality, cardiovascular events, adiposity and lipids. SEARCH METHODS We searched CENTRAL, MEDLINE and Embase to February 2019, plus ClinicalTrials.gov and World Health Organization International Clinical Trials Registry to August 2019, with no language restrictions. We handsearched systematic review references and bibliographies and contacted trial authors. SELECTION CRITERIA We included randomised controlled trials (RCTs) that lasted at least 12 months and compared supplementation or advice to increase LCn3 or ALA intake, or both, versus usual or lower intake. DATA COLLECTION AND ANALYSIS Two review authors independently assessed trials for inclusion, extracted data and assessed validity. We performed separate random-effects meta-analysis for ALA and LCn3 interventions, and assessed dose-response relationships through meta-regression. MAIN RESULTS We included 86 RCTs (162,796 participants) in this review update and found that 28 were at low summary risk of bias. Trials were of 12 to 88 months' duration and included adults at varying cardiovascular risk, mainly in high-income countries. Most trials assessed LCn3 supplementation with capsules, but some used LCn3- or ALA-rich or enriched foods or dietary advice compared to placebo or usual diet. LCn3 doses ranged from 0.5 g a day to more than 5 g a day (19 RCTs gave at least 3 g LCn3 daily). Meta-analysis and sensitivity analyses suggested little or no effect of increasing LCn3 on all-cause mortality (risk ratio (RR) 0.97, 95% confidence interval (CI) 0.93 to 1.01; 143,693 participants; 11,297 deaths in 45 RCTs; high-certainty evidence), cardiovascular mortality (RR 0.92, 95% CI 0.86 to 0.99; 117,837 participants; 5658 deaths in 29 RCTs; moderate-certainty evidence), cardiovascular events (RR 0.96, 95% CI 0.92 to 1.01; 140,482 participants; 17,619 people experienced events in 43 RCTs; high-certainty evidence), stroke (RR 1.02, 95% CI 0.94 to 1.12; 138,888 participants; 2850 strokes in 31 RCTs; moderate-certainty evidence) or arrhythmia (RR 0.99, 95% CI 0.92 to 1.06; 77,990 participants; 4586 people experienced arrhythmia in 30 RCTs; low-certainty evidence). Increasing LCn3 may slightly reduce coronary heart disease mortality (number needed to treat for an additional beneficial outcome (NNTB) 334, RR 0.90, 95% CI 0.81 to 1.00; 127,378 participants; 3598 coronary heart disease deaths in 24 RCTs, low-certainty evidence) and coronary heart disease events (NNTB 167, RR 0.91, 95% CI 0.85 to 0.97; 134,116 participants; 8791 people experienced coronary heart disease events in 32 RCTs, low-certainty evidence). Overall, effects did not differ by trial duration or LCn3 dose in pre-planned subgrouping or meta-regression. There is little evidence of effects of eating fish. Increasing ALA intake probably makes little or no difference to all-cause mortality (RR 1.01, 95% CI 0.84 to 1.20; 19,327 participants; 459 deaths in 5 RCTs, moderate-certainty evidence),cardiovascular mortality (RR 0.96, 95% CI 0.74 to 1.25; 18,619 participants; 219 cardiovascular deaths in 4 RCTs; moderate-certainty evidence), coronary heart disease mortality (RR 0.95, 95% CI 0.72 to 1.26; 18,353 participants; 193 coronary heart disease deaths in 3 RCTs; moderate-certainty evidence) and coronary heart disease events (RR 1.00, 95% CI 0.82 to 1.22; 19,061 participants; 397 coronary heart disease events in 4 RCTs; low-certainty evidence). However, increased ALA may slightly reduce risk of cardiovascular disease events (NNTB 500, RR 0.95, 95% CI 0.83 to 1.07; but RR 0.91, 95% CI 0.79 to 1.04 in RCTs at low summary risk of bias; 19,327 participants; 884 cardiovascular disease events in 5 RCTs; low-certainty evidence), and probably slightly reduces risk of arrhythmia (NNTB 91, RR 0.73, 95% CI 0.55 to 0.97; 4912 participants; 173 events in 2 RCTs; moderate-certainty evidence). Effects on stroke are unclear. Increasing LCn3 and ALA had little or no effect on serious adverse events, adiposity, lipids and blood pressure, except increasing LCn3 reduced triglycerides by ˜15% in a dose-dependent way (high-certainty evidence). AUTHORS' CONCLUSIONS This is the most extensive systematic assessment of effects of omega-3 fats on cardiovascular health to date. Moderate- and low-certainty evidence suggests that increasing LCn3 slightly reduces risk of coronary heart disease mortality and events, and reduces serum triglycerides (evidence mainly from supplement trials). Increasing ALA slightly reduces risk of cardiovascular events and arrhythmia.
Collapse
Affiliation(s)
- Asmaa S Abdelhamid
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Tracey J Brown
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Julii S Brainard
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Priti Biswas
- University of East AngliaMED/HSCNorwich Research ParkNorwichUKNR4 7TJ
| | - Gabrielle C Thorpe
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Helen J Moore
- Teesside UniversitySchool of Social Sciences, Humanities and LawMiddlesboroughUKTS1 3BA
| | - Katherine HO Deane
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Carolyn D Summerbell
- Durham UniversityDepartment of Sport and Exercise Sciences42 Old ElvetDurhamUKDH13HN
| | - Helen V Worthington
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of ManchesterCochrane Oral HealthCoupland Building 3Oxford RoadManchesterUKM13 9PL
| | - Fujian Song
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Lee Hooper
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | | |
Collapse
|
39
|
Chappus-McCendie H, Chevalier L, Roberge C, Plourde M. Omega-3 PUFA metabolism and brain modifications during aging. Prog Neuropsychopharmacol Biol Psychiatry 2019; 94:109662. [PMID: 31152862 DOI: 10.1016/j.pnpbp.2019.109662] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 05/28/2019] [Indexed: 12/20/2022]
Abstract
In Canada, 5.5 million (16% of Canadians) adults are >65 years old and projections suggest this number will be approximately 20% of Canadians by 2024. A major concern regarding old age is a decline in health, especially if this entails a loss of self-sufficiency and independence caused by a decline in cognition. The brain contains 60% of fat and is one of the most concentrated organs in long chain omega-3 fatty acids such as docosahexaenoic acid (DHA). During aging, there are physiological modifications in the metabolism of lipids that could also have consequences on brain structure and levels of DHA. This review will hence discuss the physiological modifications in the metabolism of lipids during aging with a focus on long chain omega-3 and omega-6 fatty acids and also outline the structural and functional modifications of the brain during aging including brain lipid modifications and its relation to higher levels of DHA and cognition. Therefore, in this review, we outline the importance of collecting more data on the biology of aging since it might highly improve our understanding about what are «normal» modifications occurring during aging and what can become pathological.
Collapse
Affiliation(s)
- Hillary Chappus-McCendie
- Research Center on Aging, Health and Social Services Centre, University Institute of Geriatrics of Sherbrooke, Department of Medicine, Université de Sherbrooke, 1036 Belvédère Sud, Sherbrooke J1H 4C4, Canada
| | - Laurie Chevalier
- Research Center on Aging, Health and Social Services Centre, University Institute of Geriatrics of Sherbrooke, Department of Medicine, Université de Sherbrooke, 1036 Belvédère Sud, Sherbrooke J1H 4C4, Canada
| | - Claude Roberge
- Research Center on Aging, Health and Social Services Centre, University Institute of Geriatrics of Sherbrooke, Department of Medicine, Université de Sherbrooke, 1036 Belvédère Sud, Sherbrooke J1H 4C4, Canada
| | - Mélanie Plourde
- Research Center on Aging, Health and Social Services Centre, University Institute of Geriatrics of Sherbrooke, Department of Medicine, Université de Sherbrooke, 1036 Belvédère Sud, Sherbrooke J1H 4C4, Canada.
| |
Collapse
|
40
|
Abstract
α-Linolenic acid (ALA) is an n-3 fatty acid found in plant-derived foods such as linseeds and linseed oil. Mammals can convert this essential fatty acid into longer-chain fatty acids including EPA, docosapentaenoic acid (DPA) and DHA. Women demonstrate greater increases in the EPA status after ALA supplementation than men, and a growing body of animal model research identifies mechanisms by which sex hormones such as oestrogen and progesterone interact with the synthesis of EPA and DHA. Alternatively, EPA, DPA and DHA can be consumed directly, with oily fish being a rich dietary source of these nutrients. However, current National Diet and Nutrition Data reveals a median oily fish intake of 0 g daily across all age ranges and in both sexes. As longer-chain n-3 fatty acids have a crucial role in fetal and neonatal brain development, advice to consume dietary ALA could prove to be a pragmatic and acceptable alternative to advice to consume fish during pregnancy, if benefits upon tissue composition and functional outcomes can be demonstrated. Further research is required to understand the effects of increasing dietary ALA during pregnancy, and will need to simultaneously address conflicts with current dietary advice to only eat 'small amounts' of vegetable oils during pregnancy. Improving our understanding of sex-specific differences in fatty acid metabolism and interactions with pregnancy has the potential to inform both personalised nutrition advice and public health policy.
Collapse
|
41
|
Abstract
Numerous health benefits are attributed to the n-3 long-chain PUFA (n-3 LCPUFA); EPA and DHA. A systematic literature review was conducted to investigate factors, other than diet, that are associated with the n-3 LCPUFA levels. The inclusion criteria were papers written in English, carried out in adult non-pregnant humans, n-3 LCPUFA measured in blood or tissue, data from cross-sectional studies, or baseline data from intervention studies. The search revealed 5076 unique articles of which seventy were included in the qualitative synthesis. Three main groups of factors potentially associated with n-3 LCPUFA levels were identified: (1) unmodifiable factors (sex, genetics, age), (2) modifiable factors (body size, physical activity, alcohol, smoking) and (3) bioavailability factors (chemically bound form of supplements, krill oil v. fish oil, and conversion of plant-derived α-linolenic acid (ALA) to n-3 LCPUFA). Results showed that factors positively associated with n-3 LCPUFA levels were age, female sex (women younger than 50 years), wine consumption and the TAG form. Factors negatively associated with n-3 LCPUFA levels were genetics, BMI (if erythrocyte EPA and DHA levels are <5·6 %) and smoking. The evidence for girth, physical activity and krill oil v. fish oil associated with n-3 LCPUFA levels is inconclusive. There is also evidence that higher ALA consumption leads to increased levels of EPA but not DHA. In conclusion, sex, age, BMI, alcohol consumption, smoking and the form of n-3 LCPUFA are all factors that need to be taken into account in n-3 LCPUFA research.
Collapse
|
42
|
Amos D, Cook C, Santanam N. Omega 3 rich diet modulates energy metabolism via GPR120-Nrf2 crosstalk in a novel antioxidant mouse model. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:466-488. [PMID: 30658097 DOI: 10.1016/j.bbalip.2019.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 12/12/2018] [Accepted: 01/07/2019] [Indexed: 02/08/2023]
Abstract
With obesity rates reaching epidemic proportions, more studies concentrated on reducing the risk and treating this epidemic are vital. Redox stress is an important metabolic regulator involved in the pathophysiology of cardiovascular disease, Type 2 diabetes, and obesity. Oxygen and nitrogen-derived free radicals alter glucose and lipid homeostasis in key metabolic tissues, leading to increases in risk of developing metabolic syndrome. Oxidants derived from dietary fat differ in their metabolic regulation, with numerous studies showing benefits from a high omega 3 rich diet compared to the frequently consumed "western diet" rich in saturated fat. Omega 3 (OM3) fatty acids improve lipid profile, lower inflammation, and ameliorate insulin resistance, possibly through maintaining redox homeostasis. This study is based on the hypothesis that altering endogenous antioxidant production and/or increasing OM3 rich diet consumption will improve energy metabolism and maintain insulin sensitivity. We tested the comparative metabolic effects of a diet rich in saturated fat (HFD) and an omega 3-enriched diet (OM3) in the newly developed 'stress-less' mice model that overexpresses the endogenous antioxidant catalase. Eight weeks of dietary intervention showed that mice overexpressing endogenous catalase compared to their wild-type controls when fed an OM3 enriched diet, in contrast to HFD, activated GPR120-Nrf2 cross-talk to maintain balanced energy metabolism, normal circadian rhythm, and insulin sensitivity. These findings suggest that redox regulation of GPR120/FFAR4 might be an important target in reducing risk of metabolic syndrome and associated diseases.
Collapse
Affiliation(s)
- Deborah Amos
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, 1700 3rd Ave, Huntington, WV 25755-0001, United States
| | - Carla Cook
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, 1700 3rd Ave, Huntington, WV 25755-0001, United States
| | - Nalini Santanam
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, 1700 3rd Ave, Huntington, WV 25755-0001, United States.
| |
Collapse
|
43
|
Lower follicular n-3 polyunsaturated fatty acid levels are associated with a better response to ovarian stimulation. J Assist Reprod Genet 2018; 36:473-482. [PMID: 30547270 DOI: 10.1007/s10815-018-1384-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 12/04/2018] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVES To analyze in detail the fatty acid (FA) composition of follicular fluid (FF) from two-sized follicles at oocyte retrieval and to determine associations of the FAs from large follicles with the woman's age and the response to ovarian stimulation. DESIGN Observational study. SETTING University and fertility clinic. PATIENTS Sixty-four women (age 19-46), consisting of unfertile patients and oocyte donors, undergoing controlled ovarian stimulation. INTERVENTIONS None. MAIN OUTCOME MEASURE(S) FF from small (< 12 mm) and large (≥ 18 mm) follicles was collected at oocyte retrieval. FAs by gas chromatography-flame ionization detection. RESULT Thirty-two FAs with chain lengths ranging from 14 to 25 carbons were identified. There was a readjustment in FA distribution as follicle size increased, raising very long-chain saturated FAs, nervonic (24:1n-9), arachidonic (20:4n-6), and n-3 polyunsaturated FAs (PUFA, P < 0.001), the latter mainly due to an increase in docosahexaenoic acid (22:6n-3, DHA). In large follicles, double bond and peroxidizability indices and total n-3 PUFA, particularly DHA, correlated positively with the woman's age and negatively with the number of total and mature oocytes, total and top-quality embryos, and fertilization rate. CONCLUSIONS We have described 32 FAs in ovarian FF, of which 16 changed their distribution with follicle size. The results also indicate that lower n-3 PUFA levels in large follicles, which are associated with younger women, predict a better response to ovarian stimulation based on the recovery of total and mature oocytes, total and top-quality embryos, and fertilization rate per cycle. KEY MESSAGE The fatty acid profile of ovarian FF changes as the follicle grows and lower n-3 PUFA levels in large follicles, associated with younger women, predict a better response to ovarian stimulation.
Collapse
|
44
|
Abdelhamid AS, Brown TJ, Brainard JS, Biswas P, Thorpe GC, Moore HJ, Deane KHO, AlAbdulghafoor FK, Summerbell CD, Worthington HV, Song F, Hooper L. Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev 2018; 11:CD003177. [PMID: 30521670 PMCID: PMC6517311 DOI: 10.1002/14651858.cd003177.pub4] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Researchers have suggested that omega-3 polyunsaturated fatty acids from oily fish (long-chain omega-3 (LCn3), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), as well as from plants (alpha-linolenic acid (ALA)) benefit cardiovascular health. Guidelines recommend increasing omega-3-rich foods, and sometimes supplementation, but recent trials have not confirmed this. OBJECTIVES To assess effects of increased intake of fish- and plant-based omega-3 for all-cause mortality, cardiovascular (CVD) events, adiposity and lipids. SEARCH METHODS We searched CENTRAL, MEDLINE and Embase to April 2017, plus ClinicalTrials.gov and World Health Organization International Clinical Trials Registry to September 2016, with no language restrictions. We handsearched systematic review references and bibliographies and contacted authors. SELECTION CRITERIA We included randomised controlled trials (RCTs) that lasted at least 12 months and compared supplementation and/or advice to increase LCn3 or ALA intake versus usual or lower intake. DATA COLLECTION AND ANALYSIS Two review authors independently assessed studies for inclusion, extracted data and assessed validity. We performed separate random-effects meta-analysis for ALA and LCn3 interventions, and assessed dose-response relationships through meta-regression. MAIN RESULTS We included 79 RCTs (112,059 participants) in this review update and found that 25 were at low summary risk of bias. Trials were of 12 to 72 months' duration and included adults at varying cardiovascular risk, mainly in high-income countries. Most studies assessed LCn3 supplementation with capsules, but some used LCn3- or ALA-rich or enriched foods or dietary advice compared to placebo or usual diet. LCn3 doses ranged from 0.5g/d LCn3 to > 5 g/d (16 RCTs gave at least 3g/d LCn3).Meta-analysis and sensitivity analyses suggested little or no effect of increasing LCn3 on all-cause mortality (RR 0.98, 95% CI 0.90 to 1.03, 92,653 participants; 8189 deaths in 39 trials, high-quality evidence), cardiovascular mortality (RR 0.95, 95% CI 0.87 to 1.03, 67,772 participants; 4544 CVD deaths in 25 RCTs), cardiovascular events (RR 0.99, 95% CI 0.94 to 1.04, 90,378 participants; 14,737 people experienced events in 38 trials, high-quality evidence), coronary heart disease (CHD) mortality (RR 0.93, 95% CI 0.79 to 1.09, 73,491 participants; 1596 CHD deaths in 21 RCTs), stroke (RR 1.06, 95% CI 0.96 to 1.16, 89,358 participants; 1822 strokes in 28 trials) or arrhythmia (RR 0.97, 95% CI 0.90 to 1.05, 53,796 participants; 3788 people experienced arrhythmia in 28 RCTs). There was a suggestion that LCn3 reduced CHD events (RR 0.93, 95% CI 0.88 to 0.97, 84,301 participants; 5469 people experienced CHD events in 28 RCTs); however, this was not maintained in sensitivity analyses - LCn3 probably makes little or no difference to CHD event risk. All evidence was of moderate GRADE quality, except as noted.Increasing ALA intake probably makes little or no difference to all-cause mortality (RR 1.01, 95% CI 0.84 to 1.20, 19,327 participants; 459 deaths, 5 RCTs),cardiovascular mortality (RR 0.96, 95% CI 0.74 to 1.25, 18,619 participants; 219 cardiovascular deaths, 4 RCTs), and CHD mortality (1.1% to 1.0%, RR 0.95, 95% CI 0.72 to 1.26, 18,353 participants; 193 CHD deaths, 3 RCTs) and ALA may make little or no difference to CHD events (RR 1.00, 95% CI 0.80 to 1.22, 19,061 participants, 397 CHD events, 4 RCTs, low-quality evidence). However, increased ALA may slightly reduce risk of cardiovascular events (from 4.8% to 4.7%, RR 0.95, 95% CI 0.83 to 1.07, 19,327 participants; 884 CVD events, 5 RCTs, low-quality evidence with greater effects in trials at low summary risk of bias), and probably reduces risk of arrhythmia (3.3% to 2.6%, RR 0.79, 95% CI 0.57 to 1.10, 4,837 participants; 141 events, 1 RCT). Effects on stroke are unclear.Sensitivity analysis retaining only trials at low summary risk of bias moved effect sizes towards the null (RR 1.0) for all LCn3 primary outcomes except arrhythmias, but for most ALA outcomes, effect sizes moved to suggest protection. LCn3 funnel plots suggested that adding in missing studies/results would move effect sizes towards null for most primary outcomes. There were no dose or duration effects in subgrouping or meta-regression.There was no evidence that increasing LCn3 or ALA altered serious adverse events, adiposity or lipids, except LCn3 reduced triglycerides by ˜15% in a dose-dependant way (high-quality evidence). AUTHORS' CONCLUSIONS This is the most extensive systematic assessment of effects of omega-3 fats on cardiovascular health to date. Moderate- and high-quality evidence suggests that increasing EPA and DHA has little or no effect on mortality or cardiovascular health (evidence mainly from supplement trials). Previous suggestions of benefits from EPA and DHA supplements appear to spring from trials with higher risk of bias. Low-quality evidence suggests ALA may slightly reduce CVD event and arrhythmia risk.
Collapse
Affiliation(s)
- Asmaa S Abdelhamid
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Tracey J Brown
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Julii S Brainard
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Priti Biswas
- University of East AngliaMED/HSCNorwich Research ParkNorwichUKNR4 7TJ
| | - Gabrielle C Thorpe
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Helen J Moore
- Durham UniversityWolfson Research InstituteDurhamUKDH1 3LE
| | - Katherine HO Deane
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Fai K AlAbdulghafoor
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Carolyn D Summerbell
- Durham UniversityDepartment of Sport and Exercise Science42 Old ElvetDurhamUKDH13HN
| | - Helen V Worthington
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of ManchesterCochrane Oral HealthJR Moore BuildingOxford RoadManchesterUKM13 9PL
| | - Fujian Song
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | - Lee Hooper
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichNorfolkUKNR4 7TJ
| | | |
Collapse
|
45
|
Iizuka Y, Kim H, Hirako S, Chiba K, Wada M, Matsumoto A. Benefits of combination low-dose pioglitazone plus fish oil on aged type 2 diabetes mice. J Food Drug Anal 2018; 26:1265-1274. [PMID: 30249325 PMCID: PMC9298570 DOI: 10.1016/j.jfda.2018.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/18/2018] [Accepted: 05/25/2018] [Indexed: 01/05/2023] Open
Abstract
The elderly patients with type 2 diabetes suffer more adverse drug events than young adults due to pharmacokinetic and pharmacodynamic changes associated with aging. Reducing the risks of these medication-related problems are equally important for the clinical care of older type 2 diabetes patients. Pioglitazone is used for treating type 2 diabetes as an oral antidiabetic drug. Despite pioglitazone is used helpful insulin sensitizers, the accumulation of subcutaneous fat is considered a major adverse effect of pioglitazone therapy. We investigated to reduce the adverse effect of pioglitazone by combination with fish oil rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in aged diabetic KK mice. The accumulation of subcutaneous fat associated with high-dose pioglitazone is reduced by fish oil, suppressing lipogenesis and stimulating fatty acid β-oxidation in the liver. Our data suggest that adding fish oil to low-dose pioglitazone results in anti-diabetic efficacy similar to that of the high-dose without concomitant body weight gain.
Collapse
|
46
|
The effect of APOE genotype on Alzheimer's disease risk is influenced by sex and docosahexaenoic acid status. Neurobiol Aging 2018; 69:209-220. [DOI: 10.1016/j.neurobiolaging.2018.05.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/23/2018] [Accepted: 05/14/2018] [Indexed: 01/21/2023]
|
47
|
Abdelhamid AS, Brown TJ, Brainard JS, Biswas P, Thorpe GC, Moore HJ, Deane KHO, AlAbdulghafoor FK, Summerbell CD, Worthington HV, Song F, Hooper L. Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev 2018; 7:CD003177. [PMID: 30019766 PMCID: PMC6513557 DOI: 10.1002/14651858.cd003177.pub3] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Researchers have suggested that omega-3 polyunsaturated fatty acids from oily fish (long-chain omega-3 (LCn3), including eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)), as well as from plants (alpha-linolenic acid (ALA)) benefit cardiovascular health. Guidelines recommend increasing omega-3-rich foods, and sometimes supplementation, but recent trials have not confirmed this. OBJECTIVES To assess effects of increased intake of fish- and plant-based omega-3 for all-cause mortality, cardiovascular (CVD) events, adiposity and lipids. SEARCH METHODS We searched CENTRAL, MEDLINE and Embase to April 2017, plus ClinicalTrials.gov and World Health Organization International Clinical Trials Registry to September 2016, with no language restrictions. We handsearched systematic review references and bibliographies and contacted authors. SELECTION CRITERIA We included randomised controlled trials (RCTs) that lasted at least 12 months and compared supplementation and/or advice to increase LCn3 or ALA intake versus usual or lower intake. DATA COLLECTION AND ANALYSIS Two review authors independently assessed studies for inclusion, extracted data and assessed validity. We performed separate random-effects meta-analysis for ALA and LCn3 interventions, and assessed dose-response relationships through meta-regression. MAIN RESULTS We included 79 RCTs (112,059 participants) in this review update and found that 25 were at low summary risk of bias. Trials were of 12 to 72 months' duration and included adults at varying cardiovascular risk, mainly in high-income countries. Most studies assessed LCn3 supplementation with capsules, but some used LCn3- or ALA-rich or enriched foods or dietary advice compared to placebo or usual diet.Meta-analysis and sensitivity analyses suggested little or no effect of increasing LCn3 on all-cause mortality (RR 0.98, 95% CI 0.90 to 1.03, 92,653 participants; 8189 deaths in 39 trials, high-quality evidence), cardiovascular mortality (RR 0.95, 95% CI 0.87 to 1.03, 67,772 participants; 4544 CVD deaths in 25 RCTs), cardiovascular events (RR 0.99, 95% CI 0.94 to 1.04, 90,378 participants; 14,737 people experienced events in 38 trials, high-quality evidence), coronary heart disease (CHD) mortality (RR 0.93, 95% CI 0.79 to 1.09, 73,491 participants; 1596 CHD deaths in 21 RCTs), stroke (RR 1.06, 95% CI 0.96 to 1.16, 89,358 participants; 1822 strokes in 28 trials) or arrhythmia (RR 0.97, 95% CI 0.90 to 1.05, 53,796 participants; 3788 people experienced arrhythmia in 28 RCTs). There was a suggestion that LCn3 reduced CHD events (RR 0.93, 95% CI 0.88 to 0.97, 84,301 participants; 5469 people experienced CHD events in 28 RCTs); however, this was not maintained in sensitivity analyses - LCn3 probably makes little or no difference to CHD event risk. All evidence was of moderate GRADE quality, except as noted.Increasing ALA intake probably makes little or no difference to all-cause mortality (RR 1.01, 95% CI 0.84 to 1.20, 19,327 participants; 459 deaths, 5 RCTs),cardiovascular mortality (RR 0.96, 95% CI 0.74 to 1.25, 18,619 participants; 219 cardiovascular deaths, 4 RCTs), and it may make little or no difference to CHD events (RR 1.00, 95% CI 0.80 to 1.22, 19,061 participants, 397 CHD events, 4 RCTs, low-quality evidence). However, increased ALA may slightly reduce risk of cardiovascular events (from 4.8% to 4.7%, RR 0.95, 95% CI 0.83 to 1.07, 19,327 participants; 884 CVD events, 5 RCTs, low-quality evidence), and probably reduces risk of CHD mortality (1.1% to 1.0%, RR 0.95, 95% CI 0.72 to 1.26, 18,353 participants; 193 CHD deaths, 3 RCTs), and arrhythmia (3.3% to 2.6%, RR 0.79, 95% CI 0.57 to 1.10, 4,837 participants; 141 events, 1 RCT). Effects on stroke are unclear.Sensitivity analysis retaining only trials at low summary risk of bias moved effect sizes towards the null (RR 1.0) for all LCn3 primary outcomes except arrhythmias, but for most ALA outcomes, effect sizes moved to suggest protection. LCn3 funnel plots suggested that adding in missing studies/results would move effect sizes towards null for most primary outcomes. There were no dose or duration effects in subgrouping or meta-regression.There was no evidence that increasing LCn3 or ALA altered serious adverse events, adiposity or lipids, although LCn3 slightly reduced triglycerides and increased HDL. ALA probably reduces HDL (high- or moderate-quality evidence). AUTHORS' CONCLUSIONS This is the most extensive systematic assessment of effects of omega-3 fats on cardiovascular health to date. Moderate- and high-quality evidence suggests that increasing EPA and DHA has little or no effect on mortality or cardiovascular health (evidence mainly from supplement trials). Previous suggestions of benefits from EPA and DHA supplements appear to spring from trials with higher risk of bias. Low-quality evidence suggests ALA may slightly reduce CVD event risk, CHD mortality and arrhythmia.
Collapse
Affiliation(s)
- Asmaa S Abdelhamid
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| | - Tracey J Brown
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| | - Julii S Brainard
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| | - Priti Biswas
- University of East AngliaMED/HSCNorwich Research ParkNorwichUKNR4 7TJ
| | - Gabrielle C Thorpe
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Helen J Moore
- Durham UniversityWolfson Research InstituteDurhamUKDH1 3LE
| | - Katherine HO Deane
- University of East AngliaSchool of Health SciencesEarlham RoadNorwichUKNR4 7TJ
| | - Fai K AlAbdulghafoor
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| | - Carolyn D Summerbell
- Durham UniversityDepartment of Sport and Exercise Science42 Old ElvetDurhamUKDH13HN
| | - Helen V Worthington
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of ManchesterCochrane Oral HealthJR Moore BuildingOxford RoadManchesterUKM13 9PL
| | - Fujian Song
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| | - Lee Hooper
- University of East AngliaNorwich Medical SchoolNorwich Research ParkNorwichUKNR4 7TJ
| |
Collapse
|
48
|
Bernard JY, Pan H, Aris IM, Moreno-Betancur M, Soh SE, Yap F, Tan KH, Shek LP, Chong YS, Gluckman PD, Calder PC, Godfrey KM, Chong MFF, Kramer MS, Karnani N, Lee YS. Long-chain polyunsaturated fatty acids, gestation duration, and birth size: a Mendelian randomization study using fatty acid desaturase variants. Am J Clin Nutr 2018; 108:92-100. [PMID: 29878044 PMCID: PMC6038907 DOI: 10.1093/ajcn/nqy079] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/23/2018] [Indexed: 11/12/2022] Open
Abstract
Background In randomized trials, supplementation of n-3 (ω-3) long-chain polyunsaturated fatty acids (LC-PUFAs) during pregnancy has resulted in increased size at birth, which is attributable to longer gestation. Objective We examined this finding by using a Mendelian randomization approach utilizing fatty acid desaturase (FADS) gene variants affecting LC-PUFA metabolism. Design As part of a tri-ethnic mother-offspring cohort in Singapore, 35 genetic variants in FADS1, FADS2, and FADS3 were genotyped in 898 mothers and 1103 offspring. Maternal plasma n-3 and n-6 PUFA concentrations at 26-28 wk of gestation were measured. Gestation duration was derived from an ultrasound dating scan in early pregnancy and from birth date. Birth length and weight were measured. Eight FADS variants were selected through a tagging-SNP approach and examined in association with PUFA concentrations, gestation duration among spontaneous labors, and birth size with the use of ethnicity-adjusted linear regressions and survival models that accounted for the competing risks of induced labor and prelabor cesarean delivery. Results Maternal FADS1 variant rs174546, tagging for 8 other variants located on FADS1 and FADS2, was strongly related to plasma n-6 but not n-3 LC-PUFA concentrations. Offspring and maternal FADS3 variants were associated with gestation duration among women who had spontaneous labor: each copy of rs174450 minor allele C was associated with a shorter gestation by 2.2 d (95% CI: 0.9, 3.4 d) and 1.9 d (0.7, 3.0 d) for maternal and offspring variants, respectively. In survival models, rs174450 minor allele homozygotes had reduced time to delivery after spontaneous labor compared with major allele homozygotes [HR (95% CI): 1.51 (1.18, 1.95) and 1.51 (1.20, 1.89) for mothers and offspring, respectively]. Conclusions With the use of a Mendelian randomization approach, we observed associations between FADS variants and gestation duration. This suggests a potential role of LC-PUFAs in gestation duration. This trial was registered at http://www.clinicaltrials.gov as NCT01174875.
Collapse
Affiliation(s)
- Jonathan Y. Bernard
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL)
| | - Hong Pan
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL)
| | - Izzuddin M. Aris
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL)
| | - Margarita Moreno-Betancur
- Clinical Epidemiology and Biostatistics Unit, Murdoch Childrens Research Institute, Melbourne, Australia (MMB),Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia (MMB)
| | - Shu-E Soh
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (SES, LPS, YSL)
| | - Fabian Yap
- Department of Paediatric Endocrinology, KK Women's and Children's Hospital, Singapore (FY)
| | - Kok Hian Tan
- Department of Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore (KHT),Duke-NUS Medical School, Singapore (KHT)
| | - Lynette P. Shek
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (SES, LPS, YSL),Khoo Teck Puat - National University Children’s Medical Institute, National University Health System, Singapore (LPS, YSL)
| | - Yap-Seng Chong
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (YSC, MSK)
| | - Peter D. Gluckman
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Liggins Institute, University of Auckland, Auckland, New Zealand (PDG)
| | - Philip C. Calder
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom (PCC, KMG),NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom (PCC, KMG)
| | - Keith M. Godfrey
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom (PCC, KMG),NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom (PCC, KMG),Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton, United Kingdom (KMG)
| | - Mary Foong-Fong Chong
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Clinical Nutrition Research Centre (CNRC), Singapore Institute for Clinical Sciences, Centre for Translational Medicine, Singapore (MFFC),Saw Swee Hock School of Public Health, National University of Singapore, Singapore (MFFC)
| | - Michael S. Kramer
- Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (YSC, MSK),Departments of Pediatrics and of Epidemiology, Biostatistics and Occupational Health, McGill University Faculty of Medicine, Montreal, Quebec, Canada (MSK)
| | - Neerja Karnani
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (NK)
| | - Yung Seng Lee
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore (JYB, HP, IMA, SES, LPS, YSC, PDG, MFFC, NK, YSL),Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore (SES, LPS, YSL),Khoo Teck Puat - National University Children’s Medical Institute, National University Health System, Singapore (LPS, YSL)
| |
Collapse
|
49
|
Association of oily fish intake, sex, age, BMI and APOE genotype with plasma long-chain n-3 fatty acid composition. Br J Nutr 2018; 120:23-32. [PMID: 29729672 DOI: 10.1017/s000711451800106x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
n-3 Fatty acids are associated with better cardiovascular and cognitive health. However, the concentration of EPA, DPA and DHA in different plasma lipid pools differs and factors influencing this heterogeneity are poorly understood. Our aim was to evaluate the association of oily fish intake, sex, age, BMI and APOE genotype with concentrations of EPA, DPA and DHA in plasma phosphatidylcholine (PC), NEFA, cholesteryl esters (CE) and TAG. Healthy adults (148 male, 158 female, age 20-71 years) were recruited according to APOE genotype, sex and age. The fatty acid composition was determined by GC. Oily fish intake was positively associated with EPA in PC, CE and TAG, DPA in TAG, and DHA in all fractions (P≤0·008). There was a positive association between age and EPA in PC, CE and TAG, DPA in NEFA and CE, and DHA in PC and CE (P≤0·034). DPA was higher in TAG in males than females (P<0·001). There was a positive association between BMI and DPA and DHA in TAG (P<0·006 and 0·02, respectively). APOE genotype×sex interactions were observed: the APOE4 allele associated with higher EPA in males (P=0·002), and there was also evidence for higher DPA and DHA (P≤0·032). In conclusion, EPA, DPA and DHA in plasma lipids are associated with oily fish intake, sex, age, BMI and APOE genotype. Such insights may be used to better understand the link between plasma fatty acid profiles and dietary exposure and may influence intake recommendations across population subgroups.
Collapse
|
50
|
Abstract
Cell membrane fatty acids influence fundamental properties of the plasma membrane, including membrane fluidity, protein functionality, and lipid raft signalling. Evidence suggests that dietary n-3 PUFA may target the plasma membrane of immune cells by altering plasma membrane lipid dynamics, thereby regulating the attenuation of immune cell activation and suppression of inflammation. As lipid-based immunotherapy might be a promising new clinical strategy for the treatment of inflammatory disorders, we conducted in vitro and in vivo experiments to examine the effects of n-3 PUFA on CD4+ T cell membrane order, mitochondrial bioenergetics and lymphoproliferation. n-3 PUFA were incorporated into human primary CD4+ T cells phospholipids in vitro in a dose-dependent manner, resulting in a reduction in whole cell membrane order, oxidative phosphorylation and proliferation. At higher doses, n-3 PUFA induced unique phase separation in T cell-derived giant plasma membrane vesicles. Similarly, in a short-term human pilot study, supplementation of fish oil (4 g n-3 PUFA/d) for 6 weeks in healthy subjects significantly elevated EPA (20 : 5n-3) levels in CD4+ T cell membrane phospholipids, and reduced membrane lipid order. These results demonstrate that the dynamic reshaping of human CD4+ T cell plasma membrane organisation by n-3 PUFA may modulate down-stream clonal expansion.
Collapse
|