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Ramírez-Garza SL, Laveriano-Santos EP, Moreno JJ, Bodega P, de Cos-Gandoy A, de Miguel M, Santos-Beneit G, Fernández-Alvira JM, Fernández-Jiménez R, Martínez-Gómez J, Ruiz-León AM, Estruch R, Lamuela-Raventós RM, Tresserra-Rimbau A. Metabolic syndrome, adiposity, diet, and emotional eating are associated with oxidative stress in adolescents. Front Nutr 2023; 10:1216445. [PMID: 37789897 PMCID: PMC10543258 DOI: 10.3389/fnut.2023.1216445] [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: 05/03/2023] [Accepted: 08/15/2023] [Indexed: 10/05/2023] Open
Abstract
Background Metabolic syndrome (MS), a condition related to adiposity and oxidative stress, can develop in adolescence, a critical stage in life that impacts health in adulthood. However, there is scarce scientific research about the relationship between lifestyle factors, emotion management, and oxidative stress in this phase of life. Aim To analyze whether nutritional parameters, lifestyle factors, emotion management, and MS in adolescents are associated with oxidative stress measured by the biomarker 8-isoprostane. Methods A cross-sectional study was carried out in 132 adolescents (48.5% girls, aged 12 ± 0.48 years) and data were collected on nutritional parameters (anthropometric measurements, biochemical analyzes, and blood pressure), lifestyle factors (physical activity, sleep, and diet), and emotion management (self-esteem, emotional eating, and mood). 8-isoprostane was analyzed in spot urine samples. The study population was categorized in three groups (healthy, at-risk, and with MS) using the International Diabetes Federation definition of MS in adolescents. To capture more complex interactions, a multiple linear regression was used to analyze the association between 8-isoprostane and the aforementioned variables. Results Urinary 8-isoprostane levels were significantly higher in the MS group compared to the healthy group (1,280 ± 543 pg./mg vs. 950 ± 416 pg./mg respectively). In addition, univariable analysis revealed positive significant associations between 8-isoprostane and body mass index, waist circumference, waist-to-height ratio, body fat percentage, blood lipid profile and glucose, emotional eating, and refined cereal intake. Conversely, a negative significant association was found between 8-isoprostane and sleep duration and fish intake. The multiple linear regression analysis revealed associations between 8-isoprostane and LDL-c (β = 0.173 value of p = 0.049), emotional eating (low β = 0.443, value of p = 0.036; high β = 0.152, value of p = 0.470), refined cereal intake (β =0.191, value of p = 0.024), and fish intake (β = -0.187, value of p = 0.050). Conclusion The MS group, LDL-c, emotional eating, and high refined cereals and low fish intakes were associated with higher levels of oxidative stress in an adolescent population.
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Affiliation(s)
- Sonia L. Ramírez-Garza
- Department of Nutrition, Food Science and Gastronomy, XIA, School of Pharmacy and Food Sciences, Institute for Nutrition and Food Safety Research, University of Barcelona, Barcelona, Spain
| | - Emily P. Laveriano-Santos
- Department of Nutrition, Food Science and Gastronomy, XIA, School of Pharmacy and Food Sciences, Institute for Nutrition and Food Safety Research, University of Barcelona, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Juan J. Moreno
- Department of Nutrition, Food Science and Gastronomy, XIA, School of Pharmacy and Food Sciences, Institute for Nutrition and Food Safety Research, University of Barcelona, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Patricia Bodega
- Foundation for Science, Health and Education, Barcelona, Spain
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Amaya de Cos-Gandoy
- Foundation for Science, Health and Education, Barcelona, Spain
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Mercedes de Miguel
- Foundation for Science, Health and Education, Barcelona, Spain
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Gloria Santos-Beneit
- Foundation for Science, Health and Education, Barcelona, Spain
- The Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | | | - Rodrigo Fernández-Jiménez
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
- Hospital Universitario Clínico San Carlos, Madrid, Spain
- Centro de Investigación Biomédica En Red en Enfermedades CardioVasculares, Madrid, Spain
| | | | - Ana María Ruiz-León
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Internal Medicine Hospital Clinic, Institut d’Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Ramon Estruch
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
- Department of Internal Medicine Hospital Clinic, Institut d’Investigacions Biomèdiques August Pi i Sunyer, University of Barcelona, Barcelona, Spain
| | - Rosa M. Lamuela-Raventós
- Department of Nutrition, Food Science and Gastronomy, XIA, School of Pharmacy and Food Sciences, Institute for Nutrition and Food Safety Research, University of Barcelona, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Anna Tresserra-Rimbau
- Department of Nutrition, Food Science and Gastronomy, XIA, School of Pharmacy and Food Sciences, Institute for Nutrition and Food Safety Research, University of Barcelona, Barcelona, Spain
- Consorcio CIBER, M.P. Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
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Chamorro R, Farías R, Allende P, Acuña M, Cáceres P, Gómez F, Ortiz A, Tapia D, Farías C, Valenzuela R. Effect of a pescetarian and vegan diet on fatty acid composition in blood and spermatozoa in young healthy men. Prostaglandins Leukot Essent Fatty Acids 2023; 196:102582. [PMID: 37544056 DOI: 10.1016/j.plefa.2023.102582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 08/08/2023]
Abstract
INTRODUCTION There is a growing interest in vegetarian and vegan diets, but both can potentially affect tissue fatty acids (FA) composition. We aimed to evaluate the effect of vegetarian diets on plasma, erythrocytes, and sperm n-3 polyunsaturated fatty acids (n-3 PUFA) status in healthy young men. METHODS Four groups were studied: i) men consuming a regular omnivore diet (OMV-1, n = 35); ii) men consuming an omnivore diet but excluding fish and seafood (OMV-2, n = 34); iii) men consuming a pescetarian diet (including dairy, eggs, fish, and seafood) (PESC, n = 36); and iv) men following a strict vegan diet (VEG, n = 35). Participants in each group should follow their diet for at least the previous 12 months. Diet evaluation used a structured validated food frequency questionnaire. FA composition was measured in plasma, erythrocyte phospho-lipids, and spermatozoa by gas-liquid chromatography, expressed as a mole percentage of the total FA content. RESULTS Main findings showed higher alpha-linolenic fatty acid (ALA) and total n-3 PUFA dietary intake in the VEG group. In plasma, arachidonic and eicosapentaenoic acids were higher in OMV and PESC groups, whereas docosahexaenoic acid (DHA) level was lower in VEG. Higher ALA, but reduced DHA and total n-3 PUFA levels were found in erythrocytes and spermatozoa in the VEG group. CONCLUSION Higher dietary ALA intake was found in pescetarians and vegan men. However, the higher ALA intake was not reflected in higher DHA content in the evaluated tissues. PUFA assessment, with particular emphasis in DHA, are necessary to improve PUFA status in vegan men.
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Affiliation(s)
- Rodrigo Chamorro
- Department of Nutrition, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Rut Farías
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Paulina Allende
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Mariana Acuña
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Paula Cáceres
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Fernanda Gómez
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Abigail Ortiz
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Daniela Tapia
- Nutrition and Dietetic School, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Camila Farías
- Nutrition and Dietetics School, Faculty of Health Sciences, Catholic University of Maule, Curicó, Chile
| | - Rodrigo Valenzuela
- Department of Nutrition, Faculty of Medicine, University of Chile, Santiago, Chile.
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Green T, See J, Schauch M, Reil J, Glover M, Brix J, Gerry A, Li K, Newman M, Gahler RJ, Wood S. A randomized, double-blind, placebo-controlled, cross-over trial to evaluate the effect of EstroSense ® on 2-hydroxyestrone:16α-hydroxyestrone ratio in premenopausal women. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2023; 20:199-206. [PMID: 36201753 DOI: 10.1515/jcim-2022-0301] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVES Some estrogen metabolites are associated with increased breast cancer risk, while others are protective. Research efforts have focused on modifiable factors, including bioactive compounds found in food or supplements, promoting estrogen profiles with anti-cancer properties. EstroSense® is a nutraceutical product with bioactive compounds, including Indole-3-carbinol and green-tea catechins, which may favourably affect estrogen profiles. This study was conducted to determine if EstroSense use, compared to placebo, promotes a higher urinary 2-hydroxyestrone:16α-hydroxyestrone ratio (2-OHE1:16α-OHE1), a biomarker associated with a lowered risk of breast cancer. METHODS A total of 148 premenopausal women were recruited from British Columbia, Canada to participate in a randomized, double-blind, cross-over, multicentre, placebo-controlled study in which women were randomized to a treatment sequence that consisted of either EstroSense®, followed by placebo or vice-versa. The women were instructed to consume three capsules per day of EstroSense® or the placebo for three menstrual cycles (∼12 weeks). The primary outcome was the measurement of 2-OHE1:16α-OHE1 in casual samples at baseline and after each treatment phase. RESULTS After 12 weeks of intervention, the mean (95% CI) urinary 2-OHE1:16α-OHE1 was 4.55 (2.69, 6.42) (p<0.001) higher following EstroSense than placebo adjusted for baseline values. CONCLUSIONS EstroSense use led to markedly higher urinary 2-OHE1:16α-OHE1 than the placebo, a biomarker associated with a lower risk of breast cancer. REGISTRATION http://clinicaltrials.gov (NCT02385916).
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Affiliation(s)
- Tim Green
- Adjunct Professor, Food, Nutrition and Health, University of British Columbia, Vancouver, BC, Canada
| | | | - Marita Schauch
- Tall Tree Integrated Health Centre, Victoria, BC, Canada
| | - Julie Reil
- Shiloh Medical Clinic, Billings, MT, USA
| | - Melissa Glover
- Tall Tree Integrated Health Centre, Victoria, BC, Canada
| | - Jennifer Brix
- Brix Family Chiropractic & Wellness Centre, Kelowna, BC, Canada
| | | | - Kathy Li
- Department of Paediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Mark Newman
- Precision Analytical Inc., McMinnville, OR, USA
| | - Roland J Gahler
- Factors Group of Nutritional Products Inc. Research & Development, Burnaby, BC, Canada
| | - Simon Wood
- Adjunct Professor, Food, Nutrition and Health, University of British Columbia, Vancouver, BC, Canada
- School of Public Health, Faculty of Health Sciences, Curtin University, WA, Australia
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García-Maldonado E, Alcorta A, Zapatera B, Vaquero MP. Changes in fatty acid levels after consumption of a novel docosahexaenoic supplement from algae: a crossover randomized controlled trial in omnivorous, lacto-ovo vegetarians and vegans. Eur J Nutr 2022; 62:1691-1705. [DOI: 10.1007/s00394-022-03050-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022]
Abstract
Abstract
Purpose
To determine serum fatty acids of lacto-ovo vegetarian (LOV), vegan (VEG) and omnivorous (OMN) adults, and to analyse the effects of consuming a docosahexaenoic acid (DHA) supplement of vegetable origin on fatty acid profile.
Methods
A randomized, double-blind, placebo-controlled crossover design was conducted in healthy adults. Volunteers (n = 116) were randomly assigned to a DHA-supplement (dose 250 mg/day), made from the microalgae Schizochytrium sp., or a placebo during 5-week periods separated by a 5-week washout interim period. Compliance and dietary intake were estimated and serum fatty acids were determined by gas chromatography. Results were analysed by mixed linear models.
Results
Percentage of linoleic acid (C18:2n6) in serum was the highest among the fatty acids in the three diet groups, followed by oleic (C18:1n9) and palmitic (C16:0) acids. Linoleic (C18:2n6) and alpha-linolenic (C18:3n3) acids were higher in VEG compared to OMN (p < 0.001), while in LOV, their levels were intermediate between the other groups. Women presented higher DHA (C22:6n3) than men (p < 0.001). The DHA-supplement increased serum DHA compared to placebo in the three diet groups (p < 0.001), and a higher increase was observed in VEG followed by LOV (p < 0.001). The ratio serum n-6/n-3 improved by the supplementation but remained higher in LOV and VEG than in OMN. In contrast, the DHA-supplement decreased docosapentaenoic (C22:5n3) and docosatetraenoic (C22:4n6) acids in all diet groups (p < 0.001) and increased the eicosapentaenoic to alpha-linolenic fatty acids ratio (p = 0.016).
Conclusion
The DHA-supplement at dose of 250 mg/day was effective in increasing serum DHA either in omnivorous, lacto-ovo vegetarian and vegan adults.
Clinical trial registration
Registered at Clinicaltrials.gov (www.clinicaltrials.gov), NCT04278482.
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MohanMarugaRaja MK, Devarajan A, Dhote VV. Dietary supplementation for traumatic brain injury. DIAGNOSIS AND TREATMENT OF TRAUMATIC BRAIN INJURY 2022:485-494. [DOI: 10.1016/b978-0-12-823347-4.00038-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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Wiggs AG, Chandler JK, Aktas A, Sumner SJ, Stewart DA. The Effects of Diet and Exercise on Endogenous Estrogens and Subsequent Breast Cancer Risk in Postmenopausal Women. Front Endocrinol (Lausanne) 2021; 12:732255. [PMID: 34616366 PMCID: PMC8489575 DOI: 10.3389/fendo.2021.732255] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/25/2021] [Indexed: 11/20/2022] Open
Abstract
Endogenous estrogens have been associated with overall breast cancer risk, particularly for postmenopausal women, and ways to reduce these estrogens have served as a primary means to decrease overall risk. This narrative review of clinical studies details how various nutritional and exercise lifestyle interventions have been used to modify estrogen levels and metabolism to provide a protective impact against breast cancer incidence. We also summarized the evidence supporting the efficacy of interventions, outcomes of interest and identified emerging research themes. A systematic PubMed MEDLINE search identified scholarly articles or reviews published between 2000-2020 that contained either a cohort, cross-sectional, or interventional study design and focused on the relationships between diet and/or exercise and overall levels of different forms of estrogen and breast cancer risk and occurrence. Screening and data extraction was undertaken by two researchers. Data synthesis was narrative due to the heterogeneous nature of studies. A total of 1625 titles/abstracts were screened, 198 full texts reviewed; and 43 met eligibility criteria. Of the 43 studies, 28 were randomized controlled trials, and 15 were observational studies. Overall, studies that incorporated both diet and exercise interventions demonstrated better control of detrimental estrogen forms and levels and thus likely represent the best strategies for preventing breast cancer development for postmenopausal women. Some of the strongest associations included weight loss via diet and diet + exercise interventions, reducing alcohol consumption, and consuming a varied dietary pattern, similar to the Mediterranean diet. More research should be done on the effects of specific nutritional components on endogenous estrogen levels to understand the effect that the components have on their own and in combination within the diet.
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Affiliation(s)
- Alleigh G Wiggs
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Justin K Chandler
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, United States
| | - Aynur Aktas
- Department of Supportive Oncology, Levine Cancer Institute, Atrium Health, Charlotte, NC, United States
| | - Susan J Sumner
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, United States
| | - Delisha A Stewart
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, United States
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de Salazar L, Contreras C, Torregrosa-García A, Luque-Rubia AJ, Ávila-Gandía V, Domingo JC, López-Román FJ. Oxidative Stress in Endurance Cycling Is Reduced Dose-Dependently after One Month of Re-Esterified DHA Supplementation. Antioxidants (Basel) 2020; 9:antiox9111145. [PMID: 33218112 PMCID: PMC7698918 DOI: 10.3390/antiox9111145] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/06/2020] [Accepted: 11/16/2020] [Indexed: 12/18/2022] Open
Abstract
Docosahexaenoic acid (DHA) supplementation can reduce exercise-induced oxidative stress generated during long aerobic exercise, with the minimum dose yet to be elucidated for physically active subjects. In this study, we performed a dose finding with re-esterified DHA in triglyceride form in a randomized double-blind parallel trial at different doses (350, 1050, 1750, and 2450 mg a day) for 4 weeks in males engaged in regular cycling (n = 100, 7.6 ± 3.7 h/week). The endogenous antioxidant capacity of DHA was quantified as a reduction in the levels of the oxidative stress marker 8-hydroxy-2′-deoxyguanosine (8-OHdG) recollected in 24-h urine samples after 90 min of constant load cycling before and after intervention. To ascertain incorporation of DHA, erythrocyte polyunsaturated fatty acid (PUFA) composition was compared along groups. We found a dose-dependent antioxidant capacity of DHA from 1050 mg with a trend to neutralization for the highest dose of 2450 mg (placebo: n = 13, F = 0.041; 350 mg: n = 10, F = 0.268; 1050 mg: n = 11, F = 7.112; 1750 mg: n = 12, F = 9.681; 2450 mg: n = 10, F = 15.230). In the erythrocyte membrane, the re-esterified DHA increased DHA and omega-3 percentage and decreased omega 6 and the omega-6 to omega-3 ratio, while Eicosapentaenoic acid (EPA) and PUFA remained unchanged. Supplementation of re-esterified DHA exerts a dose-dependent endogenous antioxidant property against moderate-intensity long-duration aerobic exercise in physically active subjects when provided at least 1050 mg a day for 4 weeks.
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Affiliation(s)
- Lydia de Salazar
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
| | - Carlos Contreras
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
| | - Antonio Torregrosa-García
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
- Correspondence:
| | - Antonio J. Luque-Rubia
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
| | - Vicente Ávila-Gandía
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
| | | | - Francisco Javier López-Román
- Sports Physiology Department, Faculty of Health Sciences, UCAM Universidad Católica San Antonio de Murcia, 30107 Guadalupe (Murcia), Spain; (L.d.S.); (A.J.L.-R.); (V.Á.-G.); (F.J.L.-R.)
- Department of Biochemistry and Molecular Biomedicine, University of Barcelona, 08007 Barcelona, Spain;
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The ω-3 Polyunsaturated Fatty Acids and Oxidative Stress in Long-Term Parenteral Nutrition Dependent Adult Patients: Functional Lipidomics Approach. Nutrients 2020; 12:nu12082351. [PMID: 32781598 PMCID: PMC7468769 DOI: 10.3390/nu12082351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/02/2020] [Accepted: 08/03/2020] [Indexed: 01/09/2023] Open
Abstract
Omega-3 polyunsaturated fatty acids (ω-3PUFAs) are introduced into parenteral nutrition (PN) as hepatoprotective but may be susceptible to the lipid peroxidation while olive oil (OO) is declared more peroxidation resistant. We aimed to estimate how the lipid composition of PN mixture affects plasma and erythrocyte lipidome and the propensity of oxidative stress. A cross-sectional comparative study was performed in a cohort of adult patients who were long-term parenterally administered ω-3 PUFAs without (FO/–, n = 9) or with (FO/OO, n = 13) olive oil and healthy age- and sex-matched controls, (n = 30). Lipoperoxidation assessed as plasma and erythrocyte malondialdehyde content was increased in both FO/– and FO/OO groups but protein oxidative stress (protein carbonyls in plasma) and low redox status (GSH/GSSG in erythrocytes) was detected only in the FO/– subcohort. The lipidome of all subjects receiving ω-3 PUFAs was enriched with lipid species containing ω-3 PUFAs (FO/–˃FO/OO). Common characteristic of all PN-dependent patients was high content of fatty acyl-esters of hydroxy-fatty acids (FAHFAs) in plasma while acylcarnitines and ceramides were enriched in erythrocytes. Plasma and erythrocyte concentrations of plasmanyls and plasmalogens (endogenous antioxidants) were decreased in both patient groups with a significantly more pronounced effect in FO/–. We confirmed the protective effect of OO in PN mixtures containing ω-3 PUFAs.
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Chen X, Wu Y, Zhang Z, Zheng X, Wang Y, Yu M, Liu G. Effects of the rs3834458 Single Nucleotide Polymorphism in FADS2 on Levels of n-3 Long-chain Polyunsaturated Fatty Acids: A Meta-analysis. Prostaglandins Leukot Essent Fatty Acids 2019; 150:1-6. [PMID: 31487670 DOI: 10.1016/j.plefa.2019.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/17/2019] [Accepted: 08/23/2019] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Evaluate the effects of the single nucleotide polymorphism (SNP) rs3834458 in the fatty acid desaturase 2 gene (FADS2) on n-3 long-chain polyunsaturated fatty acid (LC-PUFA) levels using statistical meta-analysis. METHODS Literatures pertaining to the relationship between the SNP rs3834458 and LC-PUFA were retrieved from three electronic databases. Original information was analyzed using RevMan 5.3, including single statistics, test for heterogeneity, summary statistics and evaluation of publication bias. RESULTS In total, five pieces of literature were retrieved and divided into seven trials. We observed that the minor allele (Tdel+deldel) carriers of rs3834458 had higher linolenic acid levels (P < 0.00001) and lower eicosapentaenoic acid (P < 0.00001), docosapentenoic acid (P = 0.005) and docosahexaenoic acid (P < 0.00001) levels compared to those of carrying major allele homozygote (TT). CONCLUSION This meta-analysis indicates that minor allele of rs3834458 in FADS2 may result in lower activity of delta-6 desaturase leading to higher ALA and lower EPA, DPA and DHA in blood.
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Affiliation(s)
- Xueyan Chen
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China; Children's Hospital of Changchun, Changchun, Jilin 130051, China
| | - Yixia Wu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Zilin Zhang
- School of Mathematics, Jilin University, Changchun, Jilin 130012, China
| | - Xiaolei Zheng
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Yan Wang
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Miao Yu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Guoliang Liu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China.
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Myers WA, Rico JE, Davis AN, Fontoura ABP, Dineen MJ, Tate BN, McFadden JW. Effects of abomasal infusions of fatty acids and one-carbon donors on hepatic ceramide and phosphatidylcholine in lactating Holstein dairy cows. J Dairy Sci 2019; 102:7087-7101. [PMID: 31178188 DOI: 10.3168/jds.2018-16200] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/04/2019] [Indexed: 12/18/2022]
Abstract
Our objectives were to (1) determine whether the abomasal infusion of behenic acid (C22:0) elevated hepatic ceramide relative to palmitic acid (C16:0) or docosahexaenoic acid (C22:6n-3) infusion; (2) assess whether the abomasal infusion of choline chloride or l-serine elevated hepatic phosphatidylcholine (PC) in cows abomasally infused with C16:0; and (3) characterize the PC lipidome in cows abomasally infused with C22:6n-3, relative to C16:0 or C22:0 infusion. In a 5 × 5 Latin square design, 5 rumen-cannulated Holstein cows (214 ± 4.9 DIM; 3.2 ± 1.1 parity) were enrolled in a study with 6-d periods. Abomasal infusates consisted of (1) palmitic acid (PA; 98% C16:0); (2) PA + choline chloride (PA+C; 50 g/d choline chloride); (3) PA + l-serine (PA+S; 170 g/d l-serine); (4) behenic acid (BA; 92% C22:0); and (5) an algal oil rich in docosahexaenoic acid (DHA; 44% C22:6n-3). Emulsion infusates provided 301 g/d of total fatty acids containing a minimum of 40 g/d of C16:0. Cows were fed a corn silage-based diet. Milk was collected on d -2, -1, 5, and 6. Blood was collected and liver biopsied on d 6 of each period. Although we did not detect differences in milk yield, milk fat yield and content were lower in cows infused with DHA relative to PA. Plasma triacylglycerol concentrations were lower with DHA treatment relative to PA or BA. Cows infused with DHA had lower plasma insulin concentrations relative to cows infused with PA only. For objective 1, hepatic ceramide-d18:2/22:0 was highest in cows infused with BA relative to other treatments. For objective 2, plasma free choline concentrations were greater in PA+C cows relative to PA; however, we did not observe this effect with PA+S. Plasma total PC concentrations were similar for all treatments. Regarding the hepatic lipidome, a total of 18 hepatic PC were higher (e.g., PC-16:1/18:2) and 25 PC were lower (e.g., PC-16:0/22:6) with PA+C infusion relative to PA. In addition, 17 PC were higher (e.g., PC-20:3/22:5) and 21 PC were lower (e.g., PC-18:0/22:6) with PA+S infusion relative to PA. For objective 3, hepatic concentrations of many individual saturated PC (e.g., PC-18:0/15:0) were lower with DHA relative to other treatments. Hepatic concentrations of highly unsaturated PC with very-long-chain fatty acids (e.g., PC-14:0/22:6) were higher in DHA-infused cows relative to PA, PA+C, PA+S, or BA. The abomasal infusion of emulsions containing palmitic acid, palmitic acid with choline chloride or serine, behenic acid, or docosahexaenoic acid influence the hepatic ceramide and PC profiles of lactating cows.
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Affiliation(s)
- W A Myers
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - J E Rico
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - A N Davis
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - A B P Fontoura
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - M J Dineen
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - B N Tate
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - J W McFadden
- Department of Animal Science, Cornell University, Ithaca, NY 14853.
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Oxidative Stress and Non-Alcoholic Fatty Liver Disease: Effects of Omega-3 Fatty Acid Supplementation. Nutrients 2019; 11:nu11040872. [PMID: 31003450 PMCID: PMC6521137 DOI: 10.3390/nu11040872] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 02/06/2023] Open
Abstract
Aging is a complex phenomenon characterized by the progressive loss of tissue and organ function. The oxidative-stress theory of aging postulates that age-associated functional losses are due to the accumulation of ROS-induced damage. Liver function impairment and non-alcoholic fatty liver disease (NAFLD) are common among the elderly. NAFLD can progress to non-alcoholic steatohepatitis (NASH) and evolve to hepatic cirrhosis or hepatic carcinoma. Oxidative stress, lipotoxicity, and inflammation play a key role in the progression of NAFLD. A growing body of evidence supports the therapeutic potential of omega-3 polyunsaturated fatty acids (n-3 PUFA), mainly docosahaexenoic (DHA) and eicosapentaenoic acid (EPA), on metabolic diseases based on their antioxidant and anti-inflammatory properties. Here, we performed a systematic review of clinical trials analyzing the efficacy of n-3 PUFA on both systemic oxidative stress and on NAFLD/NASH features in adults. As a matter of fact, it remains controversial whether n-3 PUFA are effective to counteract oxidative stress. On the other hand, data suggest that n-3 PUFA supplementation may be effective in the early stages of NAFLD, but not in patients with more severe NAFLD or NASH. Future perspectives and relevant aspects that should be considered when planning new randomized controlled trials are also discussed.
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12
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Kawasaki Y, Iwahori Y, Chiba Y, Mitsumoto H, Kawasaki T, Fujita S, Takahashi Y. Efficacy of DHA and EPA on Serum Triglyceride Levels of Healthy Participants: Systematic Review. ACTA ACUST UNITED AC 2019. [DOI: 10.14302/issn.2379-7835.ijn-18-2469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background
Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are categorized as omega-3 poly unsaturated fatty acids (PUFAs) that are present in fish oil, etc. DHA and EPA omega-3 PUFAs have a well-established fasting serum triglycerides (TG) lowering effect that may result in normal lipidemia in hyperlipidemic patients. In general, omega-3 PUFAs, such as DHA and EPA, can be ingested easily, and because they are highly safe, they are assumed to be suitable for controlling fasting serum TG in the serum of those who do not require drug treatment. To the best of our knowledge, however, almost all systematic reviews on the effects of omega-3 PUFAs on lowering fasting serum TG are directed at patients fulfilling the diagnostic criteria of dyslipidemia.
Objectives
To review and confirm the preventive effect of omega-3 PUFAs against hypertriglyceridemia or the effect on nondrug treatment in patients with a mild disease, a systematic review was conducted to determine whether there was a fasting serum TG-lowering effect in subjects without disease and those with a slightly higher triglyceride level who consumed DHA and/or EPA orally compared to those with placebo or no intake of DHA and/or EPA.
Search Methods
We evaluated articles from searches of PubMed (1946-February 2016), Ichushi-Web (1977-February 2016), and J Dream III (JST Plus, 1981-February 2016; JMED Plus, 1981-February 2016). The keywords were set as follows: “DHA” or “docosahexaenoic acid” or “EPA” or “eicosapentaenoic acid” and “TG” or “triglyceride” or “triglycerol” or “triacylglycerol” or “neutral lipid.”. In addition to the literature group obtained by the database search, we included participants not suffering from any disease (i.e., excluding mild hypertriglyceridemia).
Eligibility Criteria
Before the test selection process, the following inclusion criteria were defined. Participants were healthy men and women including those with mild hypertriglyceridemia (fasting serum TG level, 150-199 mg/dL [1.69-2.25 mmol/L)). Intervention was defined as orally ingested DHA and/or EPA. Comparison was made to placebo intake or no intake of DHA and/or EPA. Results were measured for the fasting serum TG level. The test design was RCT, and quasi-RCT.
Data Abstraction
Various characteristics were extracted from original reports using a standardized data extraction form, including the author of the study, research year, research design, subject characteristics (sex, age, sample size), period, dose of DHA and/or EPA (mg/day), and comparison group.
Main Results
We identified 37 documents for review. Among the 37 reports used to integrate literature results, 25 revealed a decrease in fasting serum TG level due to the oral ingestion of DHA and/or EPA. Sixteen studies on subjects without disease and 21 on subjects with slightly higher fasting serum TG levels were separated and stratified analysis was conducted. Ten of the 16 (normal TG participant) and 15 of the 21 studies (slightly higher TG participant) respectively, indicated that at least 133 mg/day of DHA and/or EPA intervention provided a statistically significant decrease in the fasting serum TG level between an intervention group versus a placebo group.
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Affiliation(s)
- Yohei Kawasaki
- Biostatistics Section, Clinical Research Center, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, 260-8677, Japan
| | - Yoshihiro Iwahori
- LLC Okutoeru, 4-18-21-314, Minamiaoyama, Minato-ku, Tokyo, 107-0062, Japan
| | - Yosuke Chiba
- Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba-City, Ibaraki, 300-4295, Japan
| | - Hiroyuki Mitsumoto
- Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba-City, Ibaraki, 300-4295, Japan
| | - Tomoe Kawasaki
- LLC Okutoeru, 4-18-21-314, Minamiaoyama, Minato-ku, Tokyo, 107-0062, Japan
| | - Sumiko Fujita
- LLC Okutoeru, 4-18-21-314, Minamiaoyama, Minato-ku, Tokyo, 107-0062, Japan
| | - Yoshinori Takahashi
- Maruha Nichiro Corporation, 16-2, Wadai, Tsukuba-City, Ibaraki, 300-4295, Japan
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13
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Bayat M, Dabbaghmanesh MH, Koohpeyma F, Mahmoodi M, Montazeri-Najafabady N, Bakhshayeshkaram M. The Effects of Soy Milk Enriched with Lactobacillus casei and Omega-3 on the Tibia and L5 Vertebra in Diabetic Rats: a Stereological Study. Probiotics Antimicrob Proteins 2018; 11:1172-1181. [DOI: 10.1007/s12602-018-9482-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Sparkes C, Gibson R, Sinclair A, Else PL, Meyer BJ. Effect of Low Dose Docosahexaenoic Acid-Rich Fish Oil on Plasma Lipids and Lipoproteins in Pre-Menopausal Women: A Dose⁻Response Randomized Placebo-Controlled Trial. Nutrients 2018; 10:nu10101460. [PMID: 30297663 PMCID: PMC6212906 DOI: 10.3390/nu10101460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 09/14/2018] [Accepted: 09/21/2018] [Indexed: 12/15/2022] Open
Abstract
Omega-3 long chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation has been shown to improve plasma lipid profiles in men and post-menopausal women, however, data for pre-menopausal women are lacking. The benefits of intakes less than 1 g/day have not been well studied, and dose–response data is limited. The aim of this study was to determine the effect of low doses of docosahexaenoic acid (DHA)-rich tuna oil on plasma triglyceride (TG) lowering in pre-menopausal women, and investigate if low dose DHA-rich tuna oil supplementation would increase the low-density lipoprotein (LDL) and high-density lipoprotein (HDL) particle sizes. A randomized, double-blind, placebo-controlled trial was conducted, in which 53 healthy pre-menopausal women with mildly elevated plasma TG levels consumed 0, 0.35, 0.7, or 1 g/day n-3 LCPUFA as HiDHA™ tuna oil or placebo (Sunola oil) capsules for 8 weeks. Supplementation with 1 g/day n-3 LCPUFA, but not lower doses, reduced plasma TG by 23% in pre-menopausal women. This was reflected in a dose-dependent reduction in very-low-density lipoprotein (VLDL)-TG (R2 = 0.20, p = 0.003). A weak dose-dependent shift in HDL (but not LDL) particle size was identified (R2 = 0.05, p = 0.04). The results of this study indicate that DHA-rich n-3 LCPUFA supplementation at a dose of 1 g/day is an effective TG-lowering agent and increases HDL particle size in pre-menopausal women.
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Affiliation(s)
- Cassandra Sparkes
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia.
- Illawarra Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Robert Gibson
- University of Adelaide, Adelaide, SA 5005, Australia.
| | - Andrew Sinclair
- Faculty of Health, Deakin University, Geelong, VIC 3220, Australia.
- Department of Nutrition, Dietetics and Food, Monash University, Notting Hill, VIC 3168, Australia.
| | - Paul L Else
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia.
- Illawarra Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Barbara J Meyer
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia.
- Illawarra Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia.
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15
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van 't Erve TJ. Strategies to decrease oxidative stress biomarker levels in human medical conditions: A meta-analysis on 8-iso-prostaglandin F 2α. Redox Biol 2018; 17:284-296. [PMID: 29775960 PMCID: PMC6007822 DOI: 10.1016/j.redox.2018.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 02/07/2023] Open
Abstract
The widespread detection of elevated oxidative stress levels in many medical conditions has led to numerous efforts to design interventions to reduce its effects. Efforts have been wide-ranging, from dietary changes to administration of antioxidants, supplements, e.g., omega-3-fatty acids, and many medications. However, there is still no systemic assessment of the efficacy of treatments for oxidative stress reduction across a variety of medical conditions. The goal of this meta-analysis is, by combining multiple studies, to quantitate the change in the levels of the popular oxidative stress biomarker 8-iso-prostaglandin F2α (8-iso-PGF2α) after a variety of treatment strategies in human populations. Nearly 350 unique publications with 180 distinct strategies were included in the analysis. For each strategy, the difference between pre- or placebo and post-treatment levels calculated using Hedges' g value of effect. In general, administration of antibiotics, antihyperlipidemic agents, or changes in lifestyle (g = - 0.63, - 0.54, and 0.56) had the largest effect. Administration of supplements, antioxidants, or changes in diet (g = - 0.09, - 0.28, - 0.12) had small quantitative effects. To fully interpret the effectiveness of these treatments, comparisons to the increase in g value for each medical condition is required. For example, antioxidants in populations with coronary artery disease (CAD) reduce the 8-iso-PGF2α levels by g = - 0.34 ± 0.1, which is quantitatively considered a small effect. However, CAD populations, in comparison to healthy populations, have an increase in 8-iso-PGF2α levels by g = 0.38 ± 0.04; therefore, the overall reduction of 8-iso-PGF2α levels is ≈ 90% by this treatment in this specific medical condition. In conclusion, 8-iso-PGF2α levels can be reduced not only by antioxidants but by many other strategies. Not all strategies are equally effective at reducing 8-iso-PGF2α levels. In addition, the effectiveness of any strategy can be assessed only in relation to the medical condition investigated.
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Affiliation(s)
- Thomas J van 't Erve
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, 27709 NC, USA; Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, 27709 NC, USA.
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16
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Da Silva MS, Bilodeau JF, Julien P, Rudkowska I. Dietary fats and F 2-isoprostanes: A review of the clinical evidence. Crit Rev Food Sci Nutr 2018; 57:3929-3941. [PMID: 27438347 DOI: 10.1080/10408398.2016.1196646] [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: 12/17/2022]
Abstract
Evidence supports that a high dietary fat intake increases oxidative stress and the risk of diet-induced metabolic disorders such as obesity, diabetes and cardiovascular diseases. F2-isoprostanes (F2-isoP) are formed by the non-enzymatic oxidation of arachidonic acid and are widely used as reliable biomarkers of oxidative stress in clinical studies. Dietary fats may influence F2-isoP levels, as they (1) are metabolic substrates for their formation, (2) modify the lipid composition of tissues, and (3) affect the plasma lipoprotein concentrations which are involved in F2-isoP transport. This review examined the latest clinical evidence on how dietary fats can affect blood circulation and excretion of F2-isoP in individuals with healthy or deteriorated metabolic profiles. Clinical studies reported that saturated or monounsaturated fat-rich diets did not affect F2-isoP levels in adults with healthy or deteriorated metabolic profiles. Though, ω-3 polyunsaturated fatty acids decreased F2-isoP levels in numerous studies, whereas trans-fatty acids raised F2-isoP excretion. Yet, the reported heterogeneous results reveal important considerations, such as the health status of the participants, the biological fluids used to determine F2-isoP, the analytical methods employed and the specific F2-isoP isomers detected. Therefore, future clinical studies should be designed in order to consider these issues in the studies of the effects of fat intake on oxidative stress.
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Affiliation(s)
- Marine S Da Silva
- a Endocrinology and Nephrology Unit , CHU de Québec Research Center, Université Laval , Quebec , QC , Canada.,c Department of Kinesiology, Faculty of Medecine , Université Laval , Quebec , QC , Canada
| | - Jean-François Bilodeau
- a Endocrinology and Nephrology Unit , CHU de Québec Research Center, Université Laval , Quebec , QC , Canada.,b Department of Medicine, Faculty of Medecine , Université Laval , Quebec , QC , Canada
| | - Pierre Julien
- a Endocrinology and Nephrology Unit , CHU de Québec Research Center, Université Laval , Quebec , QC , Canada.,b Department of Medicine, Faculty of Medecine , Université Laval , Quebec , QC , Canada
| | - Iwona Rudkowska
- a Endocrinology and Nephrology Unit , CHU de Québec Research Center, Université Laval , Quebec , QC , Canada.,c Department of Kinesiology, Faculty of Medecine , Université Laval , Quebec , QC , Canada
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17
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Agnoli C, Baroni L, Bertini I, Ciappellano S, Fabbri A, Papa M, Pellegrini N, Sbarbati R, Scarino ML, Siani V, Sieri S. Position paper on vegetarian diets from the working group of the Italian Society of Human Nutrition. Nutr Metab Cardiovasc Dis 2017; 27:1037-1052. [PMID: 29174030 DOI: 10.1016/j.numecd.2017.10.020] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/28/2017] [Accepted: 10/23/2017] [Indexed: 01/28/2023]
Abstract
BACKGROUND Interest in vegetarian diets is growing in Italy and elsewhere, as government agencies and health/nutrition organizations are emphasizing that regular consumption of plant foods may provide health benefits and help prevent certain diseases. METHODS AND RESULTS We conducted a Pubmed search, up to September, 2015, for studies on key nutrients (proteins, vitamin B12, iron, zinc, calcium, vitamin D, and n-3 fatty acids) in vegetarian diets. From 295 eligible publications the following emerged: Vegetarians should be encouraged to supplement their diets with a reliable source of vitamin B12 (vitamin-fortified foods or supplements). Since the plant protein digestibility is lower than that of animal proteins it may be appropriate for vegetarians to consume more proteins than recommended for the general population. Vegetarians should also be encouraged to habitually consume good sources of calcium, iron and zinc - particularly vegetables that are low in oxalate and phytate (e.g. Brassicaceae), nuts and seeds, and calcium-rich mineral water. Calcium, iron, and zinc bioavailability can be improved by soaking, germination, and sour-dough leavening that lower the phytate content of pulses and cereals. Vegetarians can ensure good n-3 fatty acid status by habitually consuming good sources of a-linolenic acid (walnuts, flaxseeds, chia seeds, and their oils) and limiting linoleic acid intake (corn and sunflower oils). CONCLUSIONS Well-planned vegetarian diets that include a wide variety of plant foods, and a reliable source of vitamin B12, provide adequate nutrient intake. Government agencies and health/nutrition organizations should provide more educational resources to help Italians consume nutritionally adequate vegetarian diets.
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Affiliation(s)
- C Agnoli
- Epidemiology and Prevention Unit, Fondazione IRCSS Istituto Nazionale dei Tumori, Milan, Italy
| | - L Baroni
- Primary Treatment Unit, Northern Health and Social Security District 9, Treviso, Italy
| | | | - S Ciappellano
- Department of Food, Environmental and Nutritional Sciences, Division of Human Nutrition, University of Milan, Milan, Italy
| | - A Fabbri
- Nutrition Unit, Hygiene, Food and Nutrition Services, Department of Public Health, Local Health Unit, Reggio Emilia, Italy
| | - M Papa
- Independent Researcher, Italy
| | - N Pellegrini
- Department of Food and Drug, University of Parma, Parma, Italy
| | | | - M L Scarino
- Research Centre for Food and Nutrition, Council for Agricultural Research and Economics, Rome, Italy
| | - V Siani
- Independent Researcher, Italy
| | - S Sieri
- Epidemiology and Prevention Unit, Fondazione IRCSS Istituto Nazionale dei Tumori, Milan, Italy.
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18
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Long-chain n-3 PUFA in vegetarian women: a metabolic perspective. J Nutr Sci 2017; 6:e58. [PMID: 29209497 PMCID: PMC5705809 DOI: 10.1017/jns.2017.62] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/14/2017] [Accepted: 10/09/2017] [Indexed: 12/11/2022] Open
Abstract
Vegetarian diets have been associated with health benefits, but paradoxically are low in EPA and DHA which are important for development, particularly of the central nervous system, and for health. Humans have limited capacity for synthesis of EPA and DHA from α-linolenic acid, although this is greater in women than men. Oily fish and, to a lesser extent, dairy foods and meat are the primary sources of EPA and DHA in the diet. Exclusion of these foods from the diet by vegetarians is associated consistently with lower EPA and DHA status in vegetarian women compared with omnivores. The purpose of the present review was to assess the impact of low EPA and DHA status in vegetarian pregnancies on the development and health of children. EPA and DHA status was lower in breast milk and in infants of vegetarian mothers than those born to omnivore mothers, which suggests that in the absence of pre-formed dietary EPA and DHA, synthesis from α-linolenic acid is an important process in determining maternal EPA and DHA status in pregnancy. However, there have been no studies that have investigated the effect of low maternal DHA status in vegetarians on cognitive function in children. It is important to address this gap in knowledge in order to be confident that vegetarian and vegan diets during pregnancy are safe in the context of child development.
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19
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Insight into the contribution of isoprostanoids to the health effects of omega 3 PUFAs. Prostaglandins Other Lipid Mediat 2017; 133:111-122. [DOI: 10.1016/j.prostaglandins.2017.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 04/07/2017] [Accepted: 05/31/2017] [Indexed: 12/30/2022]
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20
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AbuMweis S, Jew S, Tayyem R, Agraib L. Eicosapentaenoic acid and docosahexaenoic acid containing supplements modulate risk factors for cardiovascular disease: a meta-analysis of randomised placebo-control human clinical trials. J Hum Nutr Diet 2017; 31:67-84. [PMID: 28675488 DOI: 10.1111/jhn.12493] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Over 200 clinical trials have examined the effect of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) supplements on risk factors associated with cardiovascular disease. However, an updated analysis of the evidence is lacking. The aim of the present meta-analysis was to quantify the effect of supplements containing EPA and DHA on risk factors for cardiovascular disease. METHODS An analysis was carried on 171 clinical trials with acceptable quality (Jadad score ≥3) that were identified from a comprehensive electronic search strategy of two databases (Pubmed and Cochrane Library). A random effect model was used to obtain an overall estimate on outcomes of interest. Heterogeneity between trial results was tested for using a standard chi-squared test. RESULTS Compared with control, EPA and DHA supplements produced significant reductions of triglycerides of 0.368 mmol L-1 [95% confidence interval (CI) = -0.427 to -0.309], systolic blood pressure of 2.195 mmHg (95% CI = -3.172 to -1.217), diastolic blood pressure of 1.08 mmHg (95% CI = -1.716 to -0.444), heart rate of 1.37 bpm (95% CI = -2.41 to -0.325) and C-reactive protein of 0.343 mg L-1 (95% CI = -0.454 to -0.232). This analysis indicates an increase in both low-density lipoprotein cholesterol (mean difference = 0.150 mmol L-1 ; 95% CI = 0.058-0.243) and high-density lipoprotein cholesterol (mean difference = 0.039 mmol L-1 ; 95% CI = 0.024-0.054). The triglyceride-lowering effect was dose-dependent. CONCLUSIONS The lipid-lowering, hypotensive, anti-arrhythmic and anti-inflammatory actions of EPA and DHA supplements were confirmed in this analysis of randomised placebo-control blinded clinical trials.
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Affiliation(s)
- S AbuMweis
- Department of Clinical Nutrition and Dietetics, The Hashemite University, Zarqa, Jordan
| | - S Jew
- Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MB, Canada
| | - R Tayyem
- Department of Nutrition and Food Technology, Faculty of Agriculture, The University of Jordan, Amman, Jordan
| | - L Agraib
- Department of Clinical Nutrition and Dietetics, The Hashemite University, Zarqa, Jordan
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21
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Craddock JC, Neale EP, Probst YC, Peoples GE. Algal supplementation of vegetarian eating patterns improves plasma and serum docosahexaenoic acid concentrations and omega-3 indices: a systematic literature review. J Hum Nutr Diet 2017; 30:693-699. [PMID: 28417511 DOI: 10.1111/jhn.12474] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Vegetarians are likely to have lower intakes of preformed docosahexaenoic acid (DHA) than omnivorous populations who consume fish and animal products. As such, vegetarian populations have omega-3 indices up to 60% lower than those who consume marine products. Algae, the primary producer of DHA in the marine food chain, offer an alternative source of DHA for those who do not consume marine or animal products. This systematic review aims to examine the evidence for the relationship between supplementation with algal forms of DHA and increased DHA concentrations in vegetarian populations. METHODS The SCOPUS, Science Direct and Web of Science scientific databases were searched to identify relevant studies assessing the effect of algal DHA consumption by vegetarian (including vegan) populations. RESULTS Four randomised controlled trials and two prospective cohort studies met the inclusion criteria. All included studies reported algal sources of DHA significantly improve DHA concentrations (including plasma, serum, platelet and red blood cell fractions), as well as omega-3 indices, in vegetarian populations. An evident time or dose response was not apparent given the small number of studies to date. CONCLUSIONS Future studies should address long chain n-3 polyunsaturated fatty acid deficiencies in vegetarian populations using algal DHA and explore the potential physiological and health improvements in these individuals.
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Affiliation(s)
- J C Craddock
- Faculty of Science Medicine and Health, School of Medicine, University of Wollongong, Wollongong, NSW, Australia
| | - E P Neale
- Faculty of Science Medicine and Health, School of Medicine, University of Wollongong, Wollongong, NSW, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - Y C Probst
- Faculty of Science Medicine and Health, School of Medicine, University of Wollongong, Wollongong, NSW, Australia.,Illawarra Health and Medical Research Institute, Wollongong, NSW, Australia
| | - G E Peoples
- Faculty of Science Medicine and Health, Graduate School of Medicine, School of Medicine, University of Wollongong, Wollongong, NSW, Australia
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Abstract
Higher levels of oxidative stress, as measured by F2-isoprostanes, have been associated with chronic diseases such as CVD and some cancers. Improvements in diet and physical activity may help reduce oxidative stress; however, previous studies regarding associations between lifestyle factors and F2-isoprostane concentrations have been inconsistent. The aim of this cross-sectional study was to investigate whether physical activity and intakes of fruits/vegetables, antioxidant nutrients, dietary fat subgroups and alcohol are associated with concentrations of F2-isoprostane and the major F2-isoprostane metabolite. Urinary F2-isoprostane and its metabolite were measured in urine samples collected at enrolment from 912 premenopausal women (aged 35-54 years) participating in the Sister Study. Physical activity, alcohol consumption and dietary intakes were self-reported via questionnaires. With adjustment for potential confounders, the geometric means of F2-isoprostane and its metabolite were calculated according to quartiles of dietary intakes, alcohol consumption and physical activity, and linear regression models were used to evaluate trends. Significant inverse associations were found between F2-isoprostane and/or its metabolite and physical activity, vegetables, fruits, vitamin C, α-carotene, vitamin E, β-carotene, vitamin A, Se, lutein+zeaxanthin and long-chain n-3 fatty acids. Although trans fats were positively associated with both F2-isoprostane and its metabolite, other dietary fat subgroups including SFA, n-6 fatty acids, n-3 fatty acids, MUFA, PUFA, short-chain n-3 fatty acids, long-chain n-3 fatty acids and total fat were not associated with either F2-isoprostane or its metabolite. Our findings suggest that lower intake of antioxidant nutrients and higher intake of trans fats may be associated with greater oxidative stress among premenopausal women.
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Yum HW, Na HK, Surh YJ. Anti-inflammatory effects of docosahexaenoic acid: Implications for its cancer chemopreventive potential. Semin Cancer Biol 2016; 40-41:141-159. [PMID: 27546289 DOI: 10.1016/j.semcancer.2016.08.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 08/07/2016] [Accepted: 08/16/2016] [Indexed: 12/11/2022]
Abstract
The implication of inflammatory tissue damage in pathophysiology of human cancer as well as some metabolic disorders has been under intense investigation. Numerous studies have identified a series of critical signaling molecules involved in cellular responses to inflammatory stimuli. These include nuclear factor κB, peroxisome proliferator-activated receptor γ, nuclear factor erythroid 2 p45-related factor 2 and sterol regulatory element-binding protein 1. The proper regulation of these transcription factors mediating pro- and anti-inflammatory signaling hence provides an important strategy for the chemoprevention of inflammation-associated cancer. There is compelling evidence supporting that dietary supplementation with fish oil-derived ω-3 polyunsaturated fatty acids including docosahexaenoic acid (DHA) ameliorates symptomatic inflammation associated with cancer as well as other divergent human disorders. Acute or physiologic inflammation is an essential body's first line of defence to microbial infection and tissue injuries, but it must be properly completed by a process termed 'resolution'. Failure of resolution mechanisms can result in persistence of inflammation, leading to chronic inflammatory conditions and related malignancies. The phagocytic engulfment of apoptotic neutrophils and clearance of their potentially histotoxic contents by macrophages, called efferocytosis is an essential component in resolving inflammation. Of note, DHA is a precursor of endogenous proresolving lipid mediators which regulate the leukocyte trafficking and recruitment and thereby facilitate efferocytosis. Therefore, DHA and its metabolites may have a preventive potential in the management of human cancer which arises as a consequence of impaired resolution of inflammation as well as chronic inflammation.
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Affiliation(s)
- Hye-Won Yum
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul, 08826, South Korea; Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, South Korea
| | - Hye-Kyung Na
- Department of Food and Nutrition, College of Human Ecology, Sungshin Women's University, Seoul, 01133, South Korea.
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University, Seoul, 08826, South Korea; Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, South Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, South Korea; Cancer Research Institute, Seoul National University, Seoul, 110-744, South Korea.
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Eicosapentaenoic Acid Versus Docosahexaenoic Acid as Options for Vascular Risk Prevention. Am J Ther 2016; 23:e905-10. [DOI: 10.1097/mjt.0000000000000165] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Which has the stronger impact on coronary artery disease, eicosapentaenoic acid or docosahexaenoic acid? Hypertens Res 2016; 39:272-5. [DOI: 10.1038/hr.2015.143] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 09/08/2015] [Accepted: 09/24/2015] [Indexed: 11/08/2022]
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Leslie MA, Cohen DJA, Liddle DM, Robinson LE, Ma DWL. A review of the effect of omega-3 polyunsaturated fatty acids on blood triacylglycerol levels in normolipidemic and borderline hyperlipidemic individuals. Lipids Health Dis 2015; 14:53. [PMID: 26048287 PMCID: PMC4488064 DOI: 10.1186/s12944-015-0049-7] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 05/19/2015] [Indexed: 02/06/2023] Open
Abstract
Circulating levels of triacylglycerol (TG) is a recognized risk factor for developing cardiovascular disease, a leading cause of death worldwide. The Institute of Medicine and the American Heart Association both recommend the consumption of n-3 polyunsaturated fatty acids (PUFA), specifically eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), to reduce serum TG in hyperlipidemic individuals. Additionally, a number of systematic reviews have shown that individuals with any degree of dyslipidemia, elevated serum TG and/or cholesterol, may benefit from a 20-30 % reduction in serum TG after consuming n-3 PUFA derived from marine sources. Given that individuals with serum lipid levels ranging from healthy to borderline dyslipidemic constitute a large portion of the population, the focus of this review was to assess the potential for n-3 PUFA consumption to reduce serum TG in such individuals. A total of 1341 studies were retrieved and 38 clinical intervention studies, assessing 2270 individuals, were identified for inclusion in the current review. In summary, a 9-26 % reduction in circulating TG was demonstrated in studies where ≥ 4 g/day of n-3 PUFA were consumed from either marine or EPA/DHA-enriched food sources, while a 4-51 % reduction was found in studies where 1–5 g/day of EPA and/or DHA was consumed through supplements. Overall, this review summarizes the current evidence with regards to the beneficial effect of n-3 PUFA on circulating TG levels in normolipidemic to borderline hyperlipidemic, otherwise healthy, individuals. Thus demonstrating that n-3 PUFA may play an important role in the maintenance of cardiovascular health and disease prevention.
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Affiliation(s)
- Michael A Leslie
- Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Room 342, 491 Gordon Street, Guelph, ON, N1G 2 W1, Canada.
| | - Daniel J A Cohen
- Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Room 342, 491 Gordon Street, Guelph, ON, N1G 2 W1, Canada.
| | - Danyelle M Liddle
- Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Room 342, 491 Gordon Street, Guelph, ON, N1G 2 W1, Canada.
| | - Lindsay E Robinson
- Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Room 342, 491 Gordon Street, Guelph, ON, N1G 2 W1, Canada.
| | - David W L Ma
- Department of Human Health and Nutritional Sciences, College of Biological Science, University of Guelph, Animal Science/Nutrition Building, Room 342, 491 Gordon Street, Guelph, ON, N1G 2 W1, Canada.
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Brasky TM, Rodabough RJ, Liu J, Kurta ML, Wise LA, Orchard TS, Cohn DE, Belury MA, White E, Manson JE, Neuhouser ML. Long-chain ω-3 fatty acid intake and endometrial cancer risk in the Women's Health Initiative. Am J Clin Nutr 2015; 101:824-34. [PMID: 25739930 PMCID: PMC4381777 DOI: 10.3945/ajcn.114.098988] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/05/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Inflammation may be important in endometrial cancer development. Long-chain ω-3 (n-3) polyunsaturated fatty acids (LCω-3PUFAs) may reduce inflammation and, therefore, reduce cancer risk. Because body mass is associated with both inflammation and endometrial cancer risk, it may modify the association of fat intake on risk. OBJECTIVE We examined whether intakes of LCω-3PUFAs were associated with endometrial cancer risk overall and stratified by body size and histologic subtype. DESIGN Women were n = 87,360 participants of the Women's Health Initiative Observational Study and Clinical Trials who were aged 50-79 y, had an intact uterus, and completed a baseline food-frequency questionnaire. After 13 y of follow-up, n = 1253 incident invasive endometrial cancers were identified. Cox regression models were used to estimate HRs and 95% CIs for the association of intakes of individual ω-3 fatty acids and fish with endometrial cancer risk. RESULTS Intakes of individual LCω-3PUFAs were associated with 15-23% linear reductions in endometrial cancer risk. In women with body mass index (BMI; in kg/m(2)) <25, those in the upper compared with lowest quintiles of total LCω-3PUFA intake (sum of eicosapentaenoic, docosapentaenoic, and docosahexaenoic acids) had significantly reduced endometrial cancer risk (HR: 0.59; 95% CI: 0.40, 0.82; P-trend = 0.001), whereas there was little evidence of an association in overweight or obese women. The reduction in risk observed in normal-weight women was further specific to type I cancers. CONCLUSIONS Long-chain ω-3 intake was associated with reduced endometrial cancer risk only in normal-weight women. Additional studies that use biomarkers of ω-3 intake are needed to more accurately estimate their effects on endometrial cancer risk. This trial was registered at clinicaltrials.gov as NCT00000611.
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Affiliation(s)
- Theodore M Brasky
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Rebecca J Rodabough
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Jingmin Liu
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Michelle L Kurta
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Lauren A Wise
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Tonya S Orchard
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - David E Cohn
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Martha A Belury
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Emily White
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - JoAnn E Manson
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
| | - Marian L Neuhouser
- From the Department of Internal Medicine, Division of Cancer Prevention and Control, College of Medicine (TMB), the Department of Human Sciences, College of Education and Human Ecology (TSO and MAB), and the Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, College of Medicine (DEC), The Ohio State University, Columbus, OH; the Women's Health Initiative Clinical Coordinating Center(RJR and JL) and the Cancer Prevention Program (EW and MLN), Fred Hutchinson Cancer Research Center, Seattle, WA; the Office of Epidemiology and Biostatistics, Allegheny County Health Department, Pittsburgh, PA (MLK); the Department of Epidemiology, Slone Epidemiology Center at Boston University, Boston University School of Public Health, Boston, MA (LAW); and the Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA (JEM)
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Kelley NS, Yoshida Y, Erickson KL. Do n-3 Polyunsaturated Fatty Acids Increase or Decrease Lipid Peroxidation in Humans? Metab Syndr Relat Disord 2014; 12:403-15. [DOI: 10.1089/met.2014.0045] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Nirvair S. Kelley
- Arizona College of Osteopathic Medicine, Midwestern University, Glendale, Arizona
| | - Yasukazu Yoshida
- Health Technology Research Center, National Institute of Advanced Industrial Science and Technology, Osaka, Japan
| | - Kent L. Erickson
- Department of Cell Biology and Human Anatomy, University of California, School of Medicine, Davis, California
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Shichiri M, Adkins Y, Ishida N, Umeno A, Shigeri Y, Yoshida Y, Fedor DM, Mackey BE, Kelley DS. DHA concentration of red blood cells is inversely associated with markers of lipid peroxidation in men taking DHA supplement. J Clin Biochem Nutr 2014; 55:196-202. [PMID: 25411526 PMCID: PMC4227822 DOI: 10.3164/jcbn.14-22] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 06/22/2014] [Indexed: 02/05/2023] Open
Abstract
An increase in the proportion of fatty acids with higher numbers of double bonds is believed to increase lipid peroxidation, which augments the risk for many chronic diseases. (n-3) Polyunsaturated fatty acids provide various health benefits, but there is a concern that they might increase lipid peroxidation. We examined the effects of docosahexaenoic acid [22:6 (n-3)] supplementation on lipid peroxidation markers in plasma and red blood cells (RBC) and their associations with red blood cell and plasma fatty acids. Hypertriglyceridemic men (n = 17 per group) aged 39–66 years participated in a double-blind, randomized, placebo-controlled, parallel study. They received no supplements for the first 8 days and then received 7.5 g/day docosahexaenoic acid oil (3 g/day docosahexaenoic acid) or olive oil (placebo) for 90 days. Fasting blood samples were collected 0, 45, and 91 days after supplementation. Docosahexaenoic acid supplementation did not change plasma or RBC concentrations of lipid peroxidation markers (total hydroxyoctadecadienoic acid, total hydroxyeicosatetraenoic acid, total 8-isoprostaglandin F2α, 7α-hydroxycholesterol, 7β-hydroxycholesterol) when pre- and post-supplement values were compared. However, the post-supplement docosahexaenoic acid (DHA) concentration was inversely associated with RBC concentrations of ZE-HODE, EE-HODE, t-HODE, and total 8-isoprostaglandin F2α, (p<0.05). RBC concentration of hydroxycholesterol was also inversely associated with DHA but it did not attain significance (p = 0.07). Our results suggest that increased concentration of DHA in RBC lipids reduced lipid peroxidation. This may be another health benefit of DHA in addition to its many other health promoting effects.
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Affiliation(s)
- Mototada Shichiri
- Health Research Institute (HRI), National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Yuriko Adkins
- Western Human Nutrition Research Center, ARS, USDA and Department of Nutrition, University of California Davis, CA 95616, USA
| | - Noriko Ishida
- Health Research Institute (HRI), National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Aya Umeno
- Health Research Institute (HRI), National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Yasushi Shigeri
- Health Research Institute (HRI), National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Yasukazu Yoshida
- Health Research Institute (HRI), National Institute of Advanced Industrial Science and Technology (AIST), 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan
| | - Dawn M Fedor
- Western Human Nutrition Research Center, ARS, USDA and Department of Nutrition, University of California Davis, CA 95616, USA
| | - Bruce E Mackey
- Western Regional Research Center, ARS, USDA, Albany, CA 94710, USA
| | - Darshan S Kelley
- Western Human Nutrition Research Center, ARS, USDA and Department of Nutrition, University of California Davis, CA 95616, USA
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30
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Kitagawa Y, Abe S, Toyoda S, Watanabe S, Ebisawa K, Murakami Y, Takahashi T, Sugimura H, Taguchi I, Inoue T. Gender differences in the ratio of eicosapentaenoic acid to arachidonic acid in an inland prefecture, Tochigi: Tochigi Ryomo EPA/AA Trial in Coronary Artery Disease (TREAT-CAD). Intern Med 2014; 53:177-82. [PMID: 24492684 DOI: 10.2169/internalmedicine.53.0618] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The plasma eicosapentaenoic acid to arachidonic acid ratio (EPA/AA), which is determined only by dietary intake, has been attracting attention as a new risk marker for coronary artery disease (CAD). A Japanese inland prefecture, Tochigi, ranks higher mortality rate from CAD and lower seafood consumption, compared to other prefectures. The aim of this study was to investigate the EPA/AA ratio in residents of Tochigi prefecture. METHODS We measured the EPA/AA ratio in patients undergoing diagnostic coronary angiography, because of suspicion for having CAD, all of whom were residents of Tochigi prefecture or its bordering area. Patients A total of 428 patients were enrolled in 5 centers. RESULTS The median value of the EPA/AA ratio in the study patients was 0.37, which seems to be lower than the value of the whole Japan. The EPA/AA ratio was similar in patients with and without CAD. Female patients had lower EPA/AA ratios than male patients. When subjects were divided into 10-year age groups, 30- to 39-year-old male and female patients displayed similar EPA/AA ratios. However, the ratios of 50- to 59-year old female patients (p=0.001) and 60- to 69-year old female patients (p=0.034) were significantly lower than those of age-matched male patients. CONCLUSION In female residents of Tochigi prefecture, and particularly in menopausal female patients suspected of CAD, the EPA/AA ratio might be lower than male patients. EPA intake can help prevent cardiovascular events, especially in menopausal female residents of an area where the fish intake is low.
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A new insight to bone turnover: role of ω-3 polyunsaturated fatty acids. ScientificWorldJournal 2013; 2013:589641. [PMID: 24302863 PMCID: PMC3834626 DOI: 10.1155/2013/589641] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/24/2013] [Indexed: 11/29/2022] Open
Abstract
Background. Evidence has shown that long-chain polyunsaturated fatty acids (LCPUFA), especially the ω-3 fatty acids such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are beneficial for bone health and turnover. Objectives. This review summarizes findings from both in vivo and in vitro studies and the effects of LC PUFA on bone metabolism, as well as the relationship with the oxidative stress, the inflammatory process, and obesity. Results. Some studies in humans indicate that LCPUFA can increase bone formation, affect peak bone mass in adolescents, and reduce bone loss. However, the cellular mechanisms of action of the LCPUFA are complex and involve modulation of fatty acid metabolites such as prostaglandins, resolvins and protectins, several signaling pathways, cytokines, and growth factors, although in certain aspects there is still some controversy. LCPUFA affect receptor activator of nuclear factor κβ (RANK), a receptor found on the osteoclast, causing bone resorption, which controls osteoclast formation. Conclusions. Since fatty acids are an endogenous source of reactive oxygen species, free radicals alter the process of bone turnover; however, although there are clinical evidences linking bone metabolism and dietary lipids, more clinical trials are necessary to prove whether ω-3 PUFA supplementation plays a major role in bone health.
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Doughman SD, Ryan AS, Krupanidhi S, Sanjeevi CB, Mohan V. High DHA dosage from algae oil improves postprandial hypertriglyceridemia and is safe for type-2 diabetics. Int J Diabetes Dev Ctries 2013. [DOI: 10.1007/s13410-013-0125-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Hasadsri L, Wang BH, Lee JV, Erdman JW, Llano DA, Barbey AK, Wszalek T, Sharrock MF, Wang H(J. Omega-3 Fatty Acids as a Putative Treatment for Traumatic Brain Injury. J Neurotrauma 2013; 30:897-906. [DOI: 10.1089/neu.2012.2672] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Linda Hasadsri
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Bonnie H. Wang
- Department of Internal Medicine, University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois
| | - James V. Lee
- Department of Internal Medicine, University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois
| | - John W. Erdman
- Department of Food Science and Human Nutrition, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Daniel A. Llano
- Department of Molecular and Integrative Physiology, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Aron K. Barbey
- Department of Internal Medicine, University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois
- Department of Psychology, University of Illinois Urbana-Champaign, Urbana, Illinois
- Department of Speech and Hearing Science, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Tracey Wszalek
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois
| | - Matthew F. Sharrock
- Department of Internal Medicine, University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois
| | - Huan (John) Wang
- Department of Neurosurgery, University of Illinois College of Medicine at Urbana-Champaign, Urbana, Illinois
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Young LR, Raatz SK, Thomas W, Redmon JB, Kurzer MS. Total dietary fat and omega-3 fatty acids have modest effects on urinary sex hormones in postmenopausal women. Nutr Metab (Lond) 2013; 10:36. [PMID: 23618064 PMCID: PMC3637800 DOI: 10.1186/1743-7075-10-36] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 04/07/2013] [Indexed: 01/18/2023] Open
Abstract
Background Total fat and omega-3 fatty acids in the diet may affect breast cancer risk by altering estrogen metabolism. The purpose of this study was to elucidate the effects of differing total fat and omega-3 fatty acid content of diets on a panel of urinary estrogens and metabolites. Findings A controlled, cross-over feeding trial was conducted in postmenopausal women using three test diets: high fat diet (HF; 40% energy from fat), low fat diet (LF; 20% of energy from fat) and low fat, high omega-3 diet (LFn3; 23% energy from fat; 3% omega-3 fatty acids) for 8 week periods. Urinary hormone concentrations for 16 women were compared among diets using a linear mixed model, and within diet comparisons were made using paired t-tests. Urinary excretion of estrone was greater after the LF and LFn3 compared to the HF (P = 0.004). Estrone excretion was increased from baseline within the LF only (P = 0.02). Total estrone + estradiol + estriol increased from baseline with LF (P = 0.02) and was greater than the other two diets at 8 weeks (P = 0.03). There were no effects on estrogen metabolites, including the 2-hydroxy estrone:16α-hydroxy estrone ratio. Conclusions The results of this study indicate that urinary sex hormone metabolism was modestly altered in postmenopausal women by a low fat dietary intervention.
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Affiliation(s)
- Lindsay R Young
- Department of Food Science and Nutrition, University of Minnesota, Minneapolis, MN, USA.
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Vetrani C, Costabile G, Di Marino L, Rivellese AA. Nutrition and oxidative stress: a systematic review of human studies. Int J Food Sci Nutr 2012; 64:312-26. [PMID: 23121370 DOI: 10.3109/09637486.2012.738651] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxidative stress (OS) - defined as the imbalance between free radical production and antioxidant defences - is a condition associated with chronic-degenerative disease, such as cancer, metabolic and disease cardiovascular diseases (CVDs). Several studies have shown that diet and some of its components could influence the intensity of OS damage. The aim of this review was to critically examine some pieces of evidence from observational and intervention study in human beings to assess whether diet and its components can really modify OS in vivo. Furthermore, we tried to find out the possible mechanism behind this association. We considered all studies in MEDLINE which fitted with the following criteria: (1) adult subjects who were healthy or affected by metabolic disease and CVDs; (2) no food supplements, pillows, powder but only common foods and beverages and (3) OS assessment with well-known and validated in vivo biomarkers.
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Affiliation(s)
- C Vetrani
- Department of Clinical and Experimental Medicine, Federico II University, Naples, Italy
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36
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Armstrong P, Kelley DS, Newman JW, Staggers FE, Hartiala J, Allayee H, Stephensen CB. Arachidonate 5-lipoxygenase gene variants affect response to fish oil supplementation by healthy African Americans. J Nutr 2012; 142:1417-28. [PMID: 22739369 PMCID: PMC3397335 DOI: 10.3945/jn.112.159814] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Arachidonate 5-lipoxygenase (ALOX5) gene variants that are common in people of African ancestry are associated with a differential cardiovascular disease (CVD) risk that may be ameliorated by intake of (n-3) PUFA, such as EPA or DHA. We conducted a double-masked, placebo (PL)-controlled trial of fish oil (FO) supplements to determine if changes in erythrocyte (n-3) PUFA composition, heart rate, blood pressure, and plasma lipid and lipoprotein concentrations are modified by genotype. Participants received 5 g/d FO (2 g EPA, 1 g DHA) or 5 g/d corn/soy oil (PL). A total of 116 healthy adults of African ancestry with selected genotypes (genotypes = "dd," "d5," and "55" with "d" representing the deletion of 1 or 2 Sp1 binding sites in the ALOX5 promoter and "5" indicating the common allele with 5 sites) were enrolled and 98 completed the study. FO caused significant increases (relative to PL) in erythrocyte EPA, DHA, and total (n-3) PUFA and a decrease in the (n-6) PUFA:(n-3) PUFA ratio in the low-CVD risk "d5" and "55" genotypes but not in the high-risk "dd" genotype. Similarly, HDL particle concentration decreased with FO relative to PL in the "d5" and "55" but not "dd" genotypes. The plasma TG concentration decreased significantly with FO relative to PL in the "d5" but not "dd" and "55" genotypes. No changes were seen in LDL particle or cholesterol concentrations, heart rate, or blood pressure. These findings indicate that the efficacy of FO supplements vary by ALOX5 genotype.
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Affiliation(s)
- Patrice Armstrong
- USDA Western Human Nutrition Research Center, Davis, CA,Department of Nutrition and Program in International and Community Nutrition, University of California, Davis, CA
| | | | | | - Frank E. Staggers
- Ethnic Health Institute of Alta Bates Summit Medical Center, Oakland, CA; and
| | - Janna Hartiala
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Hooman Allayee
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Charles B. Stephensen
- USDA Western Human Nutrition Research Center, Davis, CA,To whom correspondence should be addressed. E-mail:
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Scientific Opinion on the Tolerable Upper Intake Level of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and docosapentaenoic acid (DPA). EFSA J 2012. [DOI: 10.2903/j.efsa.2012.2815] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Chen J, Jiang Y, Liang Y, Tian X, Peng C, Ma KY, Liu J, Huang Y, Chen ZY. DPA n-3, DPA n-6 and DHA improve lipoprotein profiles and aortic function in hamsters fed a high cholesterol diet. Atherosclerosis 2012; 221:397-404. [DOI: 10.1016/j.atherosclerosis.2012.01.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 12/01/2011] [Accepted: 01/03/2012] [Indexed: 02/05/2023]
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Wei MY, Jacobson TA. Effects of eicosapentaenoic acid versus docosahexaenoic acid on serum lipids: a systematic review and meta-analysis. Curr Atheroscler Rep 2012; 13:474-83. [PMID: 21975919 DOI: 10.1007/s11883-011-0210-3] [Citation(s) in RCA: 223] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Omega-3 fatty acid supplements containing both eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been shown to reduce triglycerides but also increase low-density lipoprotein (LDL). Whether EPA or DHA given as monotherapy has differential effects on serum lipoproteins has not been systematically evaluated. We performed a meta-analysis of randomized placebo-controlled trials of monotherapy with EPA (n=10), DHA (n=17), or EPA versus DHA (n=6). Compared with placebo, DHA raised LDL 7.23 mg/dL (95% CI, 3.98–10.5) whereas EPA non-significantly reduced LDL. In direct comparison studies, DHA raised LDL 4.63 mg/dL (95% CI, 2.15–7.10) more than EPA. Both EPA and DHA reduced triglycerides, with a greater reduction by DHA in direct comparison studies. DHA also raised high-density lipoprotein (4.49 mg/dL; 95% CI, 3.50–5.48) compared with placebo, whereas EPA did not. Although EPA and DHA both reduce triglycerides, they have divergent effects on LDL and high-density lipoprotein. Further research is needed to elucidate the mechanisms and significance of these differences.
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Affiliation(s)
- Melissa Y Wei
- Department of Medicine, Emory University School of Medicine, 69 Jesse Hill Jr. Drive SE, Atlanta, GA 30303, USA.
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40
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Bernstein AM, Ding EL, Willett WC, Rimm EB. A meta-analysis shows that docosahexaenoic acid from algal oil reduces serum triglycerides and increases HDL-cholesterol and LDL-cholesterol in persons without coronary heart disease. J Nutr 2012; 142:99-104. [PMID: 22113870 DOI: 10.3945/jn.111.148973] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Certain algae contain the (n-3) fatty acid DHA, yet the relation between algal oil supplementation and cardiovascular disease risk factors has not been systematically examined. Our objective was to examine the relation between algal oil supplementation and cardiovascular disease risk factors. We conducted a systematic review of randomized controlled trials published between 1996 and 2011 examining the relation between algal oil supplementation and cardiovascular disease risk factors and performed a meta-analysis of the association between algal oil DHA supplementation and changes in the concentrations of TG, LDL-cholesterol (LDL-C), and HDL-cholesterol (HDL-C). We identified 11 randomized controlled trials with 485 healthy participants that evaluated the relation between algal oil DHA supplementation and TG, LDL-C, and HDL-C. The median dose of algal DHA was 1.68 g/d. The pooled estimate for the change in TG concentration was -0.20 mmol/L (95% CI: -0.27 to -0.14), 0.23 mmol/L (95% CI: 0.16-0.30) for LDL-C, and 0.07 mmol/L (95% CI: 0.05-0.10) for HDL-C. DHA supplementation from algal oil, a marine source of (n-3) fatty acids not extracted from fish, may reduce serum TG and increase HDL-C and LDL-C in persons without coronary heart disease.
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41
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Jacobson TA, Glickstein SB, Rowe JD, Soni PN. Effects of eicosapentaenoic acid and docosahexaenoic acid on low-density lipoprotein cholesterol and other lipids: a review. J Clin Lipidol 2011; 6:5-18. [PMID: 22264569 DOI: 10.1016/j.jacl.2011.10.018] [Citation(s) in RCA: 198] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 09/12/2011] [Accepted: 10/23/2011] [Indexed: 11/30/2022]
Abstract
In this exploratory, hypothesis-generating literature review, we evaluated potentially differential effects of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), triglycerides (TG), and non-HDL-C in published studies of ω-3 fatty acid supplementation or prescription ω-3 fatty acid ethyl esters. Placebo-adjusted changes in mean lipid parameters were compared in randomized, controlled trials in subjects treated for ≥ 4 weeks with DHA or EPA. Of 22 studies identified, 6 compared DHA with EPA directly, 12 studied DHA alone (including 14 DHA-treated groups), and 4 examined EPA alone. In studies directly comparing EPA with DHA, a net increase in LDL-C of 3.3% was observed with DHA (DHA: +2.6%; EPA: -0.7%). In such head-to-head comparative studies, DHA treatment was associated with a net decrease in TG by 6.8% (DHA: -22.4%; EPA: -15.6%); a net increase in non-HDL-C by 1.7% (DHA: -1.2%; EPA -2.9%); and a net increase in HDL-C by 5.9% (DHA: +7.3%; EPA: +1.4%). Increases in LDL-C were also observed in 71% of DHA-alone groups [with demonstrated statistical significance (P < .05) in 67% (8 of 12) DHA-alone studies] but not in any EPA-alone studies. Changes in LDL-C significantly correlated with baseline TG for DHA-treated groups. The range of HDL-C increases documented in DHA-alone vs EPA-alone studies further supports the fact that HDL-C is increased more substantially by DHA than EPA. In total, these findings suggest that DHA-containing supplements or therapies were associated with more significant increases in LDL-C and HDL-C than were EPA-containing supplements or therapies. Future prospective, randomized trials are warranted to confirm these preliminary findings, determine the potential effects of these fatty acids on other clinical outcomes, and evaluate the generalizability of the data to larger and more heterogeneous patient populations.
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Affiliation(s)
- Terry A Jacobson
- Office of Health Promotion and Disease Prevention, Department of Medicine, Emory University School of Medicine, Faculty Office Building, 49 Jesse Hill Jr. Drive SE, Atlanta, GA 30303, USA.
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Neff LM, Culiner J, Cunningham‐Rundles S, Seidman C, Meehan D, Maturi J, Wittkowski KM, Levine B, Breslow JL. Algal docosahexaenoic acid affects plasma lipoprotein particle size distribution in overweight and obese adults. J Nutr 2011; 141:207-13. [PMID: 21178084 PMCID: PMC3021440 DOI: 10.3945/jn.110.130021] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Fish oils containing both EPA and DHA have been shown to have beneficial cardiovascular effects, but less is known about the independent effects of DHA. This study was designed to examine the effects of DHA on plasma lipid and lipoprotein concentrations and other biomarkers of cardiovascular risk in the absence of weight loss. In this randomized, controlled, double-blind trial, 36 overweight or obese adults were treated with 2 g/d of algal DHA or placebo for 4.5 mo. Markers of cardiovascular risk were assessed before and after treatment. In the DHA-supplemented group, the decrease in mean VLDL particle size (P ≤ 0.001) and increases in mean LDL (P ≤ 0.001) and HDL (P ≤ 0.001) particle sizes were significantly greater than changes in the placebo group. DHA supplementation also increased the concentrations of large LDL (P ≤ 0.001) and large HDL particles (P = 0.001) and decreased the concentrations of small LDL (P = 0.009) and medium HDL particles (P = 0.001). As calculated using NMR-derived data, DHA supplementation reduced VLDL TG (P = 0.009) and total TG concentrations (P = 0.006). Plasma IL-10 increased with DHA supplementation to a greater extent than placebo (P = 0.021), but no other significant changes were observed in glucose metabolism, insulin sensitivity, blood pressure, or markers of inflammation with DHA. In summary, DHA supplementation resulted in potentially beneficial changes in some markers of cardiometabolic risk, whereas other markers were unchanged.
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Affiliation(s)
- Lisa M. Neff
- Laboratory of Biochemical Genetics and Metabolism, Rockefeller University, New York, NY 10065
| | - Jill Culiner
- Laboratory of Biochemical Genetics and Metabolism, Rockefeller University, New York, NY 10065
| | - Susanna Cunningham‐Rundles
- Cellular Immunology Laboratory, Division of Hematology/Oncology, Department of Pediatrics, Weill Medical College, Cornell University, New York, NY 10065
| | - Cynthia Seidman
- Bionutrition Department, Rockefeller University Hospital, New York, NY 10065
| | - Diane Meehan
- Bionutrition Department, Rockefeller University Hospital, New York, NY 10065
| | - Janet Maturi
- Bionutrition Department, Rockefeller University Hospital, New York, NY 10065
| | - Knut M. Wittkowski
- Research Design and Biostatistics Core, Rockefeller University, New York, NY 10065
| | - Barbara Levine
- Laboratory of Biochemical Genetics and Metabolism, Rockefeller University, New York, NY 10065
| | - Jan L. Breslow
- Laboratory of Biochemical Genetics and Metabolism, Rockefeller University, New York, NY 10065,To whom correspondence should be addressed. E-mail:
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Carrepeiro MM, Rogero MM, Bertolami MC, Botelho PB, Castro N, Castro IA. Effect of n-3 fatty acids and statins on oxidative stress in statin-treated hypercholestorelemic and normocholesterolemic women. Atherosclerosis 2010; 217:171-8. [PMID: 21561620 DOI: 10.1016/j.atherosclerosis.2010.12.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Revised: 12/03/2010] [Accepted: 12/10/2010] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Although the combination of statins with n-3 fatty acids seems to be beneficial under the lipid profile aspect, there is little information about the interaction of these two compounds on oxidative stress. OBJECTIVE Evaluate the interaction between statins and n-3 fatty acids on oxidative stress in women, using a 2² factorial design. METHODS Forty-three women participated in this crossover design. They were separated into two groups in which 20 were under statin treatment for more than 6 months, and 23 were normolipidemic. Within each group, half of the patients received capsules containing 2.4 g/day of a mixture of EPA and DHA for 6 weeks, while the other half received a mixture of soya and corn oil. After a period of 90 days of washout, the groups were switched, and received the supplementation for 6 weeks more. RESULTS Statins reduced serum LDL and increased SOD expression. n-3 fatty acids increased the plasma malondialdehyde and SOD activity but reduced catalase expression (p<0.05). The interaction involving statins and n-3 fatty acids was nearly significant to the serum triacylglycerol reduction (p=0.054). CONCLUSION Combining statins and n-3 fatty acids is an excellent strategy to reduce plasma cholesterol and triacylglycerol concentration in women. However, n-3 fatty acids increased the oxidative stress and the pleiotropic effect of statins seemed to be not enough to counterbalance this result. Our data also suggested that the mechanism by which n-3 fatty acids interfere in oxidative stress can be associated with antioxidant enzymes expression and activity.
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Affiliation(s)
- Mariana Magalhães Carrepeiro
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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44
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Scientific Opinion on the substantiation of health claims related to eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), docosapentaenoic acid (DPA) and maintenance of normal cardiac function (ID 504, 506, 516, 527, 538, 703, 1128, 1317, 1324, 1325),. EFSA J 2010. [DOI: 10.2903/j.efsa.2010.1796] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Rasmussen LE, Svensson M, Jørgensen KA, Schmidt EB, Christensen JH. The content of docosahexaenoic acid in serum phospholipid is inversely correlated with plasma homocysteine levels in patients with end-stage renal disease. Nutr Res 2010; 30:535-40. [DOI: 10.1016/j.nutres.2010.07.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 07/12/2010] [Accepted: 07/12/2010] [Indexed: 12/20/2022]
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Musa-Veloso K, Binns MA, Kocenas AC, Poon T, Elliot JA, Rice H, Oppedal-Olsen H, Lloyd H, Lemke S. Long-chain omega-3 fatty acids eicosapentaenoic acid and docosahexaenoic acid dose-dependently reduce fasting serum triglycerides. Nutr Rev 2010; 68:155-67. [PMID: 20384846 DOI: 10.1111/j.1753-4887.2010.00272.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The objectives of this review were to determine whether the long-chain omega-3 fatty acids eicosapentaenoic acid and/or docosahexaenoic acid dose-dependently reduce fasting serum triglycerides (TG) and, if so, to create a mathematical model that may be used to predict potential percent reductions in fasting serum TG levels at the recommended intakes of 200-500 mg/day. The assessment included 15 randomized controlled trials that met pre-defined inclusion and exclusion criteria. Across these 15 studies, the dose-response was modeled using a first-order elimination curve. The response variable was defined as percent change from baseline in fasting serum TG, adjusted for the placebo effect. A weighting factor equal to the product of each study's sample size and quality score was used. Using the equation of the dose-response curve, predicted reductions in fasting serum TG levels at the recommended long-chain omega-3 fatty acid intakes of 200-500 mg/day are 3.1 to 7.2%.
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Beavers KM, Beavers DP, Bowden RG, Wilson RL, Gentile M. Effect of Over-the-Counter Fish-Oil Administration on Plasma Lp(a) Levels in an End-Stage Renal Disease Population. J Ren Nutr 2009; 19:443-9. [DOI: 10.1053/j.jrn.2009.06.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Indexed: 11/11/2022] Open
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Abstract
Docosahexaenoic acid (DHA) is a long-chain polyunsaturated fatty acid with activities in both infants and adults. The objective of the current work was to evaluate the published literature concerning the toxicological assessment of DHA-rich oils in animals and the safety profile of DHA consumption in humans. Structured literature searches concerning DHA toxicology and DHA effects on platelet function, lipid levels, oxidative potential, glycemic control, and immune function were conducted. The toxicological profile of DHA derived from single-cell organisms demonstrates that these oils are safe in rats (up to a consumption level of 3290 mg/kg body weight/d) in 90-d toxicology evaluations, as well as in reproductive and developmental toxicology studies. The maximum DHA level in human breast milk exceeds 1% of total fatty acids in high-fish-consuming populations. Consumption of DHA-rich human milk as sole source of nutrition provides approximately 315 mg/d in infants 1-6 months of age, and appears to be a safe level of intake. DHA supplementation studies in adults have employed doses ranging from less than 1 to 7.5 g/d, and have not resulted in any consistent adverse responses in platelet function, lipid levels, in vivo oxidation parameters, glycemic control, or immune function. In conclusion, DHA consumption does not result in consistent adverse events in infants or adults. Safe intake levels may be modeled on DHA intake from human milk in infants, and may be at least as high as the upper doses studied in adults.
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Affiliation(s)
- Eric L Lien
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, IL 61801, USA.
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Abstract
BACKGROUND Docosahexaenoic acid (22:6n-3; DHA) is absent from vegan diets and present in limited amounts in vegetarian diets. OBJECTIVE To review DHA status in vegetarians and vegans. DESIGN To identify published studies and review their findings. RESULTS Dietary analyses show that vegan diets are devoid of DHA and vegetarian diets that included dairy food and eggs only provide about 0.02 g DHA/d. Vegetarian and especially vegan diets supply more linoleic acid (18:2n-6) than omnivore diets. The intake of alpha-linolenic acid (18:3n-3) also tends to be similar or greater but depends on culinary oils used. The proportions of DHA in plasma, blood cells, breast milk, and tissues are substantially lower in vegans and vegetarians compared with omnivores. The lower proportions of DHA are accompanied by correspondingly higher proportions of the long-chain derivatives of linoleic acid, indicating that the capacity to synthesize long-chain polyunsaturated fatty acids is not limited. Short-term dietary supplementation with alpha-linolenic acid increases the proportion of eicosapentaenoic acid (20:5n-3) but does not increase the proportion of DHA in blood lipids. Small amounts of preformed DHA (as low as 200mg) result in a large increase in the proportion of DHA in blood lipids in vegetarians and vegans. There is no evidence of adverse effects on health or cognitive function with lower DHA intake in vegetarians. CONCLUSIONS Preformed DHA in the diet of omnivores explains the relatively higher proportion of this fatty acid in blood and tissue lipids compared with vegetarians. The pathophysiological significance of this difference remains to be determined.
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Affiliation(s)
- Thomas A B Sanders
- Nutritional Sciences Division (TABS), King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE19NH, UK.
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Bowden RG, Jitomir J, Wilson RL, Gentile M. Effects of Omega-3 Fatty Acid Supplementation on Lipid Levels in Endstage Renal Disease Patients. J Ren Nutr 2009; 19:259-66. [DOI: 10.1053/j.jrn.2009.01.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Indexed: 11/11/2022] Open
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