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Kuiper HC, Wei N, McGunigale SL, Vesper HW. Quantitation of trans-fatty acids in human blood via isotope dilution-gas chromatography-negative chemical ionization-mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1076:35-43. [PMID: 29396366 DOI: 10.1016/j.jchromb.2017.12.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 12/27/2017] [Accepted: 12/30/2017] [Indexed: 12/14/2022]
Abstract
Trans-fatty acids (TFA) are geometric isomers of naturally occurring cis-fatty acids. High dietary TFA intake has been associated with risk factors for cardiovascular disease. However, little is known about TFA levels in humans. To address this data need, we developed and validated a new isotope dilution-gas chromatography-negative chemical ionization-mass spectrometry (ID-GC-NCI-MS) method for quantitation of 27 fatty acids (FA) including 4 major TFA in human plasma, serum, and red blood cells (RBC) from 66 donors. Quantitation was performed with 18 isotope labeled internal standards and results are presented in μM and % of total FA. This method has high sensitivity and specificity due to use of pentafluorobenzyl-bromide derivatization combined with NCI-MS and a 200m column to optimize positional and geometric FA isomer separation. The four major TFA, palmitelaidic acid, elaidic acid, trans-vaccenic acid, and linoelaidic acid, were detected in all samples, with median total TFA concentrations of 17.7μM in plasma, 19.6μM in serum, and 21.5μM in RBC. The % of total FA for the TFA was 0.20% in plasma, 0.20% in serum, and 0.30% in RBC. Patterns for % FA are similar to those reported in other studies. We developed a highly specific, ID-GC-NCI-MS method to quantitate TFA and other FA in humans.
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Affiliation(s)
- Heather C Kuiper
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Na Wei
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Samantha L McGunigale
- Centers for Disease Control and Prevention, Battelle Memorial Institute, Atlanta, GA, USA
| | - Hubert W Vesper
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
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Allaire J, Harris WS, Vors C, Charest A, Marin J, Jackson KH, Tchernof A, Couture P, Lamarche B. Supplementation with high-dose docosahexaenoic acid increases the Omega-3 Index more than high-dose eicosapentaenoic acid. Prostaglandins Leukot Essent Fatty Acids 2017; 120:8-14. [PMID: 28515020 DOI: 10.1016/j.plefa.2017.03.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/22/2017] [Accepted: 03/29/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Recent studies suggest that eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids have distinct effects on cardiometabolic risk factors. The Omega-3 Index (O3I), which is calculated as the proportion of EPA and DHA in red blood cell (RBC) membranes, has been inversely associated with the risk of coronary heart diseases and coronary mortality. The objective of this study was to compare the effects of EPA and DHA supplementation on the O3I in men and women with abdominal obesity and subclinical inflammation. METHODS In a double-blind controlled crossover study, 48 men and 106 women with abdominal obesity and subclinical inflammation were randomized to a sequence of three treatment phases: 1-2.7g/d of EPA, 2-2.7g/d of DHA, and 3-3g/d of corn oil (0g of EPA+DHA). All supplements were provided as 3×1g capsules for a total of 3g/d. The 10-week treatment phases were separated by nine-week washouts. RBC membrane fatty acid composition and O3I were assessed at baseline and the end of each phase. Differences in O3I between treatments were assessed using mixed models for repeated measures. RESULTS The increase in the O3I after supplementation with DHA (+5.6% compared with control, P<0.0001) was significantly greater than after EPA (+3.3% compared with control, P<0.0001; DHA vs. EPA, P<0.0001). Compared to control, DHA supplementation decreased (-0.8%, P<0.0001) while EPA increased (+2.5%, P<0.0001) proportion of docosapentaenoic acid (DPA) in RBCs (DHA vs. EPA, P<0.0001). The baseline O3I was higher in women than in men (6.3% vs. 5.8%, P=0.011). The difference between DHA and EPA in increasing the O3I tended to be higher in men than in women (+2.6% vs. +2.2% respectively, P for the treatment by sex interaction=0.0537). CONCLUSIONS The increase in the O3I is greater with high dose DHA supplementation than with high dose EPA, which is consistent with the greater potency of DHA to modulate cardiometabolic risk factors. The extent to which such differences between EPA and DHA in increasing the O3I relates to long-term cardiovascular risk needs to be investigated in the future.
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Affiliation(s)
- Janie Allaire
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada
| | - William S Harris
- Sanford School of Medicine, The University of South Dakota, Sioux Falls, SD, United States; OmegaQuant Analytics, LLC, Sioux Falls, SD, United States
| | - Cécile Vors
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada
| | - Amélie Charest
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada
| | - Johanne Marin
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada
| | | | - André Tchernof
- Centre de recherche du CHU de Québec, Université Laval, Québec, Canada; Institut universitaire de cardiologique et de pneumologie du Québec (IUCPQ), Québec, Canada
| | - Patrick Couture
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada; Centre de recherche du CHU de Québec, Université Laval, Québec, Canada
| | - Benoît Lamarche
- Institut sur la nutrition et les aliments fonctionnels (INAF), Université Laval, Québec, Canada.
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Nayak U, Kanungo S, Zhang D, Ross Colgate E, Carmolli MP, Dey A, Alam M, Manna B, Nandy RK, Kim DR, Paul DK, Choudhury S, Sahoo S, Harris WS, Wierzba TF, Ahmed T, Kirkpatrick BD, Haque R, Petri WA, Mychaleckyj JC. Influence of maternal and socioeconomic factors on breast milk fatty acid composition in urban, low-income families. MATERNAL AND CHILD NUTRITION 2017; 13. [PMID: 28198164 PMCID: PMC5638057 DOI: 10.1111/mcn.12423] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 11/18/2016] [Accepted: 11/22/2016] [Indexed: 11/28/2022]
Abstract
The lipid composition of breast milk may have a significant impact on early infant growth and cognitive development. Comprehensive breast milk data is lacking from low‐income populations in the Indian subcontinent impeding assessment of deficiencies and limiting development of maternal nutritional interventions. A single breast milk specimen was collected within 6 weeks postpartum from two low‐income maternal cohorts of exclusively breastfed infants, from Dhaka, Bangladesh (n = 683) and Kolkata, India (n = 372) and assayed for percentage composition of 26 fatty acids. Mature milk (>15 days) in Dhaka (n = 99) compared to Kolkata (n = 372) was higher in total saturated fatty acid (SFA; mean 48% vs. 44%) and disproportionately lower in ω3‐polyunsaturated fatty acid (PUFA), hence the ω6‐ and ω3‐PUFA ratio in Dhaka were almost double the value in Kolkata. In both sites, after adjusting for days of lactation, increased maternal education was associated with decreased SFA and PUFA, and increasing birth order or total pregnancies was associated with decreasing ω6‐PUFA or ω3‐PUFA by a factor of 0.95 for each birth and pregnancy. In Dhaka, household prosperity was associated with decreased SFA and PUFA and increased ω6‐ and ω3‐PUFA. Maternal height was associated with increased SFA and PUFA in Kolkata (1% increase per 1 cm), but body mass index showed no independent association with either ratio in either cohort. In summary, the socioeconomic factors of maternal education and household prosperity were associated with breast milk composition, although prosperity may only be important in higher cost of living communities. Associated maternal biological factors were height and infant birth order, but not adiposity. Further study is needed to elucidate the underlying mechanisms of these effects.
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Affiliation(s)
- Uma Nayak
- Center for Public Health Genomics, University of Virginia, Charlottesville, 22908, Virginia, USA
| | - Suman Kanungo
- National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Dadong Zhang
- Center for Public Health Genomics, University of Virginia, Charlottesville, 22908, Virginia, USA
| | - E Ross Colgate
- Department of Medicine and Vaccine Testing Center, University of Vermont College of Medicine, Burlington, Vermont, USA
| | - Marya P Carmolli
- Department of Medicine and Vaccine Testing Center, University of Vermont College of Medicine, Burlington, Vermont, USA
| | - Ayan Dey
- International Vaccine Institute, Seoul, South Korea
| | - Masud Alam
- International Center for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Byomkesh Manna
- National Institute of Cholera and Enteric Diseases, Kolkata, India
| | | | | | - Dilip Kumar Paul
- Dr. B.C. Roy Post Graduate Institute of Paediatric Sciences, Kolkata, India
| | - Saugato Choudhury
- Dr. B.C. Roy Post Graduate Institute of Paediatric Sciences, Kolkata, India
| | - Sushama Sahoo
- Dr. B.C. Roy Post Graduate Institute of Paediatric Sciences, Kolkata, India
| | | | | | - Tahmeed Ahmed
- International Center for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - Beth D Kirkpatrick
- Department of Medicine and Vaccine Testing Center, University of Vermont College of Medicine, Burlington, Vermont, USA
| | - Rashidul Haque
- International Center for Diarrhoeal Disease Research, Dhaka, Bangladesh
| | - William A Petri
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, 22908, Virginia, USA.,Department of Pathology, University of Virginia, Charlottesville, Virginia, USA, 22908
| | - Josyf C Mychaleckyj
- Center for Public Health Genomics, University of Virginia, Charlottesville, 22908, Virginia, USA.,Department of Public Health Sciences, University of Virginia, Charlottesville, 22908, Virginia, USA
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Juber BA, Jackson KH, Johnson KB, Harris WS, Baack ML. Breast milk DHA levels may increase after informing women: a community-based cohort study from South Dakota USA. Int Breastfeed J 2017; 12:7. [PMID: 28149321 PMCID: PMC5273852 DOI: 10.1186/s13006-016-0099-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 12/26/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Docosahexaenoic acid (DHA), an omega-3 fatty acid found in breast milk, has many health benefits for both mother and baby. A 2007 meta-analysis found U.S. women had breast milk DHA levels (0.20% of total fatty acids) below the worldwide mean (0.32%). In 2008, international dietary recommendations were made for pregnant and lactating women to consume 200 mg of DHA per day. This community-based study aimed to define current milk DHA levels from upper Midwest USA lactating mothers and to determine if providing information about their own level along with dietary recommendations would incite changes to increase breast milk DHA content. METHODS New mothers attending lactation classes or using hospital pumping rooms in Sioux Falls, South Dakota, USA participated by providing one drop of breast milk on a card for fatty acid analysis at baseline and 1 month after initial reporting. DHA levels were analyzed by gas chromatography. Mothers received a report of their own breast milk level along with dietary recommendations on DHA intake for lactating women. Median baseline and follow-up DHA levels were determined and differences were compared by Wilcoxon signed-rank test. RESULTS At baseline, breast milk DHA content (n = 84) was highly variable (range 0.05 to 0.73%) with a median of 0.18% (IQR, 0.13, 0.28; mean ± SD, 0.22 ± 0.13%), well below the worldwide average (0.32%). Women who reported taking DHA supplements (n = 43) had higher levels than those who did not (0.23% vs. 0.15%, P < 0.0001). In a subset of 60 mothers who submitted a second sample, median breast milk DHA content increased from 0.19 to 0.22% (P < 0.01). CONCLUSIONS Findings suggest that providing nursing mothers with their breast milk DHA level and education about DHA intake while breastfeeding motivates change to increase DHA levels.
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Affiliation(s)
- Brian A Juber
- Sanford School of Medicine, University of South Dakota, 1400 W. 22nd St., Sioux Falls, SD 57105 USA
| | | | - Kristopher B Johnson
- Sanford Research, Children's Health Research Center, 2301 E. 60th Street North, Sioux Falls, SD 57104 USA
| | - William S Harris
- OmegaQuant Analytics, LLC, 5009 W. 12th St, Ste 8, Sioux Falls, SD 57106 USA.,Sanford Research, Children's Health Research Center, 2301 E. 60th Street North, Sioux Falls, SD 57104 USA
| | - Michelle L Baack
- Sanford Research, Children's Health Research Center, 2301 E. 60th Street North, Sioux Falls, SD 57104 USA.,Boekelheide Neonatal Intensive Care Unit, Sanford Children's Hospital, 1600 W. 22nd St., PO Box 5039, Sioux Falls, SD USA
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Abdelmagid SA, Nielsen DE, Badawi A, El-Sohemy A, Mutch DM, Ma DWL. Circulating concentrations and relative percent composition of trans fatty acids in healthy Canadian young adults between 2004 and 2010: a cross-sectional study. CMAJ Open 2017; 5:E130-E136. [PMID: 28401129 PMCID: PMC5378523 DOI: 10.9778/cmajo.20160048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Trans fatty acids (TFAs) produced from industrial partial hydrogenation of vegetable oils have been the subject of much research regarding their negative effect on the development of chronic diseases, and recommendations to label foods with partially hydrogenated vegetable oils and limit their levels were introduced in Canada in 2003 and 2007, respectively. Our aim was to determine temporal changes in circulating plasma TFAs in a population of young healthy Canadian adults after the introduction of the guidelines. METHODS In this study, circulating plasma concentrations and relative percent composition of individual TFAs over time (2004-2010) were determined in a cross-sectional cohort of young healthy Canadian adults as part of the Toronto Nutrigenomics study. RESULTS A total of 1294 participants were included in the cohort. Relative to 2004, total TFA levels were significantly lower in 2005-2009 (p < 0.05), but not in 2010. Although levels of 16:1t9 and 18:1t11 declined after 2004, levels of 18:1t9 and 18:1t10 were significantly lower in 2005-2009 (p < 0.05), but not in 2010. INTERPRETATION Trans fatty acids were lower in 2009 relative to 2004, but not different in 2010, suggesting that young Canadians may remain vulnerable to partially hydrogenated vegetable oil exposure and that there is a need for further monitoring of specific food categories and vulnerable populations.
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Affiliation(s)
- Salma A Abdelmagid
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
| | - Daiva E Nielsen
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
| | - Alaa Badawi
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
| | - Ahmed El-Sohemy
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
| | - David M Mutch
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
| | - David W L Ma
- Department of Human Health and Nutritional Sciences (Abdelmagid, Mutch, Ma), University of Guelph, Guelph, Ont.; Department of Nutritional Sciences (Nielsen, El-Sohemy), University of Toronto, Toronto, Ont.; Office for Biotechnology (Badawi), Genomics and Population Health, Public Health Agency of Canada, Toronto, Ont
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Chaudhary R, Saadin K, Bliden KP, Harris WS, Dinh B, Sharma T, Tantry US, Gurbel PA. Risk factors associated with plasma omega-3 fatty acid levels in patients with suspected coronary artery disease. Prostaglandins Leukot Essent Fatty Acids 2016; 113:40-45. [PMID: 27720039 DOI: 10.1016/j.plefa.2016.08.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/16/2016] [Accepted: 08/17/2016] [Indexed: 01/05/2023]
Abstract
INTRODUCTION We sought to determine the associations between plasma eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) levels and various cardiovascular risk factors and with the use of fish oil supplements (FOS). PATIENTS AND METHODS Patients with suspected coronary artery disease (CAD) undergoing cardiac catheterization (n=433) were studied. Serum fatty acid (FA) composition, the concentrations of lipids and biomarkers of oxidative stress, and dietary/lifestyle factors were measured. RESULTS FOS use was associated with a higher plasma EPA+DHA levels (3.7±1.5 vs. 2.6±1.1%, p<0.0001). However, there was no relationship between FOS dose (mg/day) and EPA+DHA levels in 76 patients reporting FOS use (r=-0.21, p=0.07). Lower levels were inversely associated with risk factor profiles including lower ApoB100/ApoA1 ratios (p<0.001). DISCUSSION AND CONCLUSIONS Higher EPA+DHA levels characterized patients with lower CAD risk. The lack of relations between FOS dose and plasma EPA+DHA levels likely reflects uncaptured variability in EPA+DHA content of supplements.
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Affiliation(s)
| | - Katayoon Saadin
- Inova Heart and Vascular Institute, Fairfax, VA, United States
| | - Kevin P Bliden
- Inova Heart and Vascular Institute, Fairfax, VA, United States
| | - William S Harris
- Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States; OmegaQuant Analytics LLC, Sioux Falls, SD, United States.
| | - Bao Dinh
- Inova Heart and Vascular Institute, Fairfax, VA, United States
| | - Tushar Sharma
- Sinai Hospital of Baltimore, Baltimore, MD, United States
| | - Udaya S Tantry
- Inova Heart and Vascular Institute, Fairfax, VA, United States
| | - Paul A Gurbel
- Inova Heart and Vascular Institute, Fairfax, VA, United States
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Clark CM, Monahan KD, Drew RC. Omega-3 polyunsaturated fatty acid supplementation attenuates blood pressure increase at onset of isometric handgrip exercise in healthy young and older humans. Physiol Rep 2016; 4:4/14/e12875. [PMID: 27440746 PMCID: PMC4962077 DOI: 10.14814/phy2.12875] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 07/01/2016] [Indexed: 12/14/2022] Open
Abstract
Aging is associated with alterations of autonomic nerve activity, and dietary intake of omega-3 polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) found in fish oil (FO), can modulate autonomic nerve activity. However, the effect of omega-3 polyunsaturated fatty acid consumption on age-related cardiovascular responses at the onset of isometric handgrip exercise, a time of rapid autonomic adjustments, is unknown. Accordingly, 14 young (25 ± 1 years; mean ± SE) and 15 older (64 ± 2 years) healthy subjects ingested 4 g FO daily for 12 weeks. On pre- and postintervention visits, participants performed 15-sec bouts of isometric handgrip at 10%, 30%, 50%, and 70% maximal voluntary contraction (MVC) while beat-to-beat systolic, diastolic, and mean arterial blood pressure (SBP, DBP, MAP; Finometer) and heart rate (HR; electrocardiogram) were recorded. All baseline cardiovascular variables were similar between groups and visits, except DBP was higher in older subjects (P < 0.05). FO increased erythrocyte EPA and DHA content in both groups (P < 0.05). FO attenuated MAP and DBP increases in response to handgrip in both age groups (change from baseline during 70% MVC handgrip pre- and post-FO: young MAPΔ 14 ± 2 mmHg versus 10 ± 2 mmHg, older MAPΔ 14 ± 3 mmHg versus 11 ± 2 mmHg; young DBPΔ 12 ± 1 mmHg versus 7 ± 2 mmHg, older DBPΔ 12 ± 1 mmHg versus 7 ± 1 mmHg; P < 0.05). FO augmented the PP (SBP-DBP) increase with 70% MVC handgrip in both groups (P < 0.05), but did not alter SBP or HR increases with handgrip. These findings suggest that FO supplementation attenuates MAP and DBP increases at the onset of isometric handgrip exercise in healthy young and older humans.
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Affiliation(s)
- Christine M Clark
- Penn State College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Kevin D Monahan
- Penn State Heart and Vascular Institute, Penn State College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania
| | - Rachel C Drew
- Penn State Heart and Vascular Institute, Penn State College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania
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Pacetti D, Gagliardi R, Balzano M, Frega NG, Ojeda ML, Borrero M, Ruiz A, Lucci P. Changes in the Fatty Acid Profile and Phospholipid Molecular Species Composition of Human Erythrocyte Membranes after Hybrid Palm and Extra Virgin Olive Oil Supplementation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:5499-5507. [PMID: 27315139 DOI: 10.1021/acs.jafc.6b01903] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work aims to evaluate and compare, for the first time, the effects of extra virgin olive oil (EVOO) and hybrid palm oil (HPO) supplementation on the fatty acid profile and phospholipid (PL) molecular species composition of human erythrocyte membranes. Results supported the effectiveness of both HPO and EVOO supplementation (3 months, 25 mL/day) in decreasing the lipophilic index of erythrocytes with no significant differences between HPO and EVOO groups at month 3. On the other hand, the novel and rapid ultraperformance liquid chromatography-tandem mass spectrometry method used for PL analysis reveals an increase in the levels of phosphatidylcholine and phosphatidylethanolamine species esterified with polyunsaturated fatty acids. This work demonstrates the ability of both EVOO and HPO to increase the degree of unsaturation of erythrocyte membrane lipids with an improvement in membrane fluidity that could be associated with a lower risk of developing cardiovascular diseases.
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Affiliation(s)
- D Pacetti
- Department of Agricultural, Food, and Environmental Sciences, Polytechnic University of Marche , Via Brecce Bianche, 60131 Ancona, Italy
| | - R Gagliardi
- Department of Agricultural, Food, and Environmental Sciences, Polytechnic University of Marche , Via Brecce Bianche, 60131 Ancona, Italy
| | - M Balzano
- Department of Agricultural, Food, and Environmental Sciences, Polytechnic University of Marche , Via Brecce Bianche, 60131 Ancona, Italy
| | - N G Frega
- Department of Agricultural, Food, and Environmental Sciences, Polytechnic University of Marche , Via Brecce Bianche, 60131 Ancona, Italy
| | - M L Ojeda
- Department of Nutrition and Biochemistry, Faculty of Sciences, Pontificia Universidad Javeriana , KR 7 #40-62, Bogota D.C., Columbia
| | - M Borrero
- Department of Nutrition and Biochemistry, Faculty of Sciences, Pontificia Universidad Javeriana , KR 7 #40-62, Bogota D.C., Columbia
| | - A Ruiz
- Department of Internal Medicine, School of Medicine, Pontificia Universidad Javeriana , KR 7 #40-62, Bogota D.C., Columbia
| | - P Lucci
- Department of Agri-food, Environmental and Animal Sciences, University of Udine , Via Sondrio 2/a, 33100 Udine, Italy
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Stark KD, Van Elswyk ME, Higgins MR, Weatherford CA, Salem N. Global survey of the omega-3 fatty acids, docosahexaenoic acid and eicosapentaenoic acid in the blood stream of healthy adults. Prog Lipid Res 2016; 63:132-52. [PMID: 27216485 DOI: 10.1016/j.plipres.2016.05.001] [Citation(s) in RCA: 341] [Impact Index Per Article: 42.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 05/14/2016] [Accepted: 05/18/2016] [Indexed: 02/05/2023]
Abstract
Studies reporting blood levels of the omega-3 polyunsaturated fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), were systematically identified in order to create a global map identifying countries and regions with different blood levels. Included studies were those of healthy adults, published in 1980 or later. A total of 298 studies met all inclusion criteria. Studies reported fatty acids in various blood fractions including plasma total lipids (33%), plasma phospholipid (32%), erythrocytes (32%) and whole blood (3.0%). Fatty acid data from each blood fraction were converted to relative weight percentages (wt.%) and then assigned to one of four discrete ranges (high, moderate, low, very low) corresponding to wt.% EPA+DHA in erythrocyte equivalents. Regions with high EPA+DHA blood levels (>8%) included the Sea of Japan, Scandinavia, and areas with indigenous populations or populations not fully adapted to Westernized food habits. Very low blood levels (≤4%) were observed in North America, Central and South America, Europe, the Middle East, Southeast Asia, and Africa. The present review reveals considerable variability in blood levels of EPA+DHA and the very low to low range of blood EPA+DHA for most of the world may increase global risk for chronic disease.
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Affiliation(s)
- Ken D Stark
- University of Waterloo, Department of Kinesiology, 200 University Avenue, Waterloo, ON, N2L 3G1, Canada.
| | - Mary E Van Elswyk
- Scientific Affairs, Van Elswyk Consulting, Inc., 10350 Macedonia St., Longmont, CO 80503, USA.
| | - M Roberta Higgins
- MEDetect Clinical Information Associates, Inc., PO Box 152, Skippack, PA 19474, USA.
| | | | - Norman Salem
- DSM Nutritional Products Ltd., 6480 Dobbin Road, Columbia, MD 21045, USA.
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von Schacky C, Passow A, Kiefl R. Trans-fatty acid levels in erythrocytes in Europe. Eur J Nutr 2016; 56:1719-1723. [DOI: 10.1007/s00394-016-1218-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/25/2016] [Indexed: 11/28/2022]
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Rice HB, Bernasconi A, Maki KC, Harris WS, von Schacky C, Calder PC. Conducting omega-3 clinical trials with cardiovascular outcomes: Proceedings of a workshop held at ISSFAL 2014. Prostaglandins Leukot Essent Fatty Acids 2016; 107:30-42. [PMID: 26858145 DOI: 10.1016/j.plefa.2016.01.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/04/2016] [Accepted: 01/04/2016] [Indexed: 12/19/2022]
Abstract
In contrast to earlier long-chain (LC) omega-3 (i.e. EPA and DHA) investigations, some recent studies have not demonstrated significant effects of EPA and DHA on cardiovascular disease (CVD) outcomes. The neutral findings may have been due to experimental design issues, such as: maintenance on aggressive cardiovascular drug treatment overshadowing the benefits of LC omega-3s, high background LC omega-3 intake, too few subjects in the study, treatment duration too short, insufficient LC omega-3 dosage, increase in omega-6 fatty acid intake during the study, failure to assess the LC omega-3 status of the subjects prior to and during treatment and lack of clarity concerning which mechanisms were expected to produce benefits. At the 11th ISSFAL Congress, a workshop was held on conducting LC omega-3 clinical trials with cardiovascular outcomes, with the goal of gaining a better understanding concerning aspects of experimental design that should be considered when planning clinical studies related to EPA and DHA and potential cardiovascular benefits.
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Affiliation(s)
- Harry B Rice
- Global Organization for EPA and DHA Omega-3s (GOED), Salt Lake City, UT, USA.
| | - Aldo Bernasconi
- Global Organization for EPA and DHA Omega-3s (GOED), Salt Lake City, UT, USA
| | - Kevin C Maki
- Midwest Center for Metabolic and Cardiovascular Research, Glen Ellyn, IL, USA
| | - William S Harris
- Health Diagnostic Laboratory, Inc., Richmond, VA, USA; University of South Dakota School of Medicine, Sioux Falls, SD, USA; OmegaQuant Analytics, LLC, Sioux Falls, SD, USA
| | | | - Philip C Calder
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom; NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, United Kingdom
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Bigornia SJ, Lichtenstein AH, Harris WS, Tucker KL. Associations of erythrocyte fatty acid patterns with insulin resistance. Am J Clin Nutr 2016; 103:902-9. [PMID: 26864364 PMCID: PMC4763498 DOI: 10.3945/ajcn.115.123604] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 01/05/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Synergistic or additive effects or both on cardiometabolic risk may be missed by examining individual fatty acids (FAs). A pattern analysis may be a more useful approach. In addition, it remains unclear whether erythrocyte FA composition relates to insulin resistance among Hispanics/Latinos. OBJECTIVE We derived erythrocyte FA patterns for a Puerto Rican cohort and examined their association with diet and insulin resistance in cross-sectional and prospective analyses. DESIGN At baseline, principal components analysis was used to derive factor patterns with the use of 24 erythrocyte FAs from 1157 participants of the Boston Puerto Rican Health Study (aged 45-75 y). Dietary intake was assessed with a validated semiquantitative food-frequency questionnaire. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated at baseline and at the 2-y follow-up. Relations between FA patterns and HOMA-IR were analyzed in a sample of 922 participants with available data. RESULTS Five FA patterns were derived, differentiated by 1) relatively high de novo lipogenesis (DNL) FAs and low n-6 (ω-6) FAs, 2) high very-long-chain saturated FAs, 3) high n-3 (ω-3) FAs, 4) high linoleic acid and low arachidonic acid, and 5) high trans FAs. The DNL pattern was positively correlated with sugar and inversely with n-6 and monounsaturated FA intakes. Only the DNL pattern was positively related to baseline HOMA-IR [adjusted geometric means (95% CIs) for quartiles 1 and 4: 1.72 (1.58, 1.87) and 2.20 (2.02, 2.39); P-trend < 0.0001]. Similar associations were observed at 2 y, after adjustment for baseline status [quartiles 1 and 4 means (95% CIs): 1.61 (1.48, 1.76) and 1.84 (1.69, 2.00); P-trend = 0.02]. These results remained consistent after the exclusion of participants with diabetes (n = 485). CONCLUSION Our findings suggest that upregulated DNL associated with a diet high in sugar and relatively low in unsaturated FAs may adversely affect insulin sensitivity in a Hispanic/Latino cohort.
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Affiliation(s)
- Sherman J Bigornia
- Clinical Laboratory and Nutritional Sciences, University of Massachusetts Lowell, Lowell, MA;
| | - Alice H Lichtenstein
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA; and
| | - William S Harris
- Department of Medicine, Sanford School of Medicine of the University of South Dakota, Sioux Falls, SD
| | - Katherine L Tucker
- Clinical Laboratory and Nutritional Sciences, University of Massachusetts Lowell, Lowell, MA
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63
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Aktas M, Elmastas M, Ozcicek F, Yilmaz N. Erythrocyte Membrane Fatty Acid Composition in Premenopausal Patients with Iron Deficiency Anemia. J Oleo Sci 2016; 65:225-31. [PMID: 26876679 DOI: 10.5650/jos.ess15211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Iron deficiency anemia (IDA) is one of the most common nutritional disorders in the world. In the present study, we evaluated erythrocyte membrane fatty acid composition in premenopausal patients with IDA. Blood samples of 102 premenopausal women and 88 healthy control subjects were collected. After the erythrocytes were separated from the blood samples, the membrane lipids were carefully extracted, and the various membrane fatty acids were measured by gas chromatography (GC). Statistical analyses were performed with the SPSS software program. We used blood ferritin concentration <15 ng/mL as cut-off for the diagnosis of IDA. The five most abundant individual fatty acids obtained were palmitic acid (16:0), oleic acid (18:1, n-9c), linoleic acid (18:2, n-6c), stearic acid (18:0), and erucic acid (C22:1, n-9c). These compounds constituted about 87% of the total membrane fatty acids in patients with IDA, and 79% of the total membrane fatty acids in the control group. Compared with control subjects, case patients had higher percentages of palmitic acid (29.9% case versus 25.3% control), oleic acid (16.8% case versus 15.1% control), and stearic acid (13.5% case versus 10.5% control), and lower percentages of erucic acid (11.5% case versus 13.6% control) and linoleic acid (15.2% case versus 15.4% control) in their erythrocyte membranes. In conclusion, the total-erythrocyte-membrane saturated fatty acid (SFA) composition in premenopausal women with IDA was found to be higher than that in the control group; however, the total-erythrocyte-membrane unsaturated fatty acid (UFA) composition in premenopausal women with IDA was found to be lower than that in the control group. The differences in these values were statistically significant.
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Affiliation(s)
- Mehmet Aktas
- Erzincan University, Faculty of Medicine, Department of Biochemistry
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DeFina LF, Bassett MH, Finley CE, Barlow CE, Willis BL, Cooper T, Clark SM, Harris WS, Radford NB. Association between omega-3 fatty acids and serum prostate-specific antigen. Nutr Cancer 2015; 68:58-62. [PMID: 26709868 DOI: 10.1080/01635581.2016.1115102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
We examined the association between omega-3 fatty acids (O3FAs) and prostate-specific antigen (PSA) in a cross-sectional analysis of 6219 men examined at the Cooper Clinic from 2009 to 2013. We assayed O3FAs from red blood cell membranes and measured PSA levels in study participants. Multiple logistic regression was used to examine the association between O3FAs and PSA. The mean age of study participants was 55.5 years (SD = 9.8) with a mean PSA level of 1.31 ng/mL (SD = 1.5). Unadjusted analyses indicated that there was a slight, direct association with PSA and each of the O3FAs tested. However, after adjusting for age and body mass index (BMI), the associations were reversed but nonsignificant [odds ratio (OR) for PSA > 4 ng/mL: total omega-3 OR = 0.98 per each 1% of total fatty acids, 95% confidence interval (CI) = 0.93-1.03; docosahexaenoic acid OR = 1.01, 95% CI = 0.92-1.11; omega-3 index OR = 0.99, 95% CI = 0.93-1.05). Similar results were obtained after age and BMI adjustment when the omega-3 index was divided into undesirable (0.01-3.99%), intermediate (4.0-7.99%), and desirable ranges ( ≥ 8.0%). Given that the study had >80% power to detect an odds ratio <0.9 or >1.1, we conclude that associations between O3FAs and PSA levels are either nonexistent or quite weak in the population that this healthy sample represents.
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Affiliation(s)
| | - Mary H Bassett
- b School of Public Health, The University of Texas Health Science Center , Dallas , Texas , USA
| | | | - Carolyn E Barlow
- c The Cooper Institute, School of Public Health, The University of Texas Health Science Center , Dallas , Texas , USA
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Mozaffarian D. Natural trans fat, dairy fat, partially hydrogenated oils, and cardiometabolic health: the Ludwigshafen Risk and Cardiovascular Health Study. Eur Heart J 2015; 37:1079-81. [PMID: 26582177 DOI: 10.1093/eurheartj/ehv595] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Dariush Mozaffarian
- Friedman School of Nutrition Science & Policy, Tufts University, Boston, MA, USA
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66
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Stier A, Reichert S, Criscuolo F, Bize P. Red blood cells open promising avenues for longitudinal studies of ageing in laboratory, non-model and wild animals. Exp Gerontol 2015; 71:118-34. [DOI: 10.1016/j.exger.2015.09.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 12/12/2022]
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Kleber ME, Delgado GE, Lorkowski S, März W, von Schacky C. Trans-fatty acids and mortality in patients referred for coronary angiography: the Ludwigshafen Risk and Cardiovascular Health Study. Eur Heart J 2015; 37:1072-8. [DOI: 10.1093/eurheartj/ehv446] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 08/17/2015] [Indexed: 11/12/2022] Open
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Monahan KD, Feehan RP, Blaha C, McLaughlin DJ. Effect of omega-3 polyunsaturated fatty acid supplementation on central arterial stiffness and arterial wave reflections in young and older healthy adults. Physiol Rep 2015; 3:3/6/e12438. [PMID: 26109192 PMCID: PMC4510635 DOI: 10.14814/phy2.12438] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Increased central arterial stiffness and enhanced arterial wave reflections may contribute to increased risk of cardiovascular disease development with advancing age. Omega-3 polyunsaturated fatty acid (n-3) ingestion may reduce cardiovascular risk via favorable effects exerted on arterial structure and function. We determined the effects of n-3 supplementation (4 g/day for 12 weeks) on important measures of central arterial stiffness (carotid-femoral pulse wave velocity; PWV) and arterial wave reflection (central augmentation index) in young (n = 12; 25 ± 1-year-old, mean ± SE) and older (n = 12; 66 ± 2) healthy adults. We hypothesized that n-3 supplementation would decrease carotid-femoral PWV and central augmentation index in older adults. Our results indicate that carotid-femoral PWV and central augmentation index were greater in older (988 ± 65 cm/sec and 33 ± 2%) than in young adults (656 ± 16 cm/sec and 3 ± 4%: both P < 0.05 compared to older) before the intervention (Pre). N-3 supplementation decreased carotid-femoral PWV in older (∆-9 ± 2% Precompared to Post; P < 0.05), but not young adults (∆2 ± 3%). Central augmentation index was unchanged by n-3 supplementation in young (3 ± 4 vs. 0 ± 4% for Pre and Post, respectively) and older adults (33 ± 2 vs. 35 ± 3%). Arterial blood pressure at rest, although increased with age, was not altered by n-3 supplementation in young or older adults. Collectively, these data indicate that 12 weeks of daily n-3 supplementation decreases an important measure of central arterial stiffness (carotid-femoral PWV) in older, but not young healthy adults. The mechanism underlying decreased central arterial stiffness with n-3 supplementation is unknown, but appears to be independent of effects on arterial blood pressure or arterial wave reflections.
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Affiliation(s)
- Kevin D Monahan
- Penn State Hershey Heart and Vascular Institute Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Robert P Feehan
- Penn State Hershey Heart and Vascular Institute Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Cheryl Blaha
- Penn State Hershey Heart and Vascular Institute Pennsylvania State University College of Medicine, Hershey, Pennsylvania
| | - Daniel J McLaughlin
- Penn State Hershey Heart and Vascular Institute Pennsylvania State University College of Medicine, Hershey, Pennsylvania
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Fontes JD, Rahman F, Lacey S, Larson MG, Vasan RS, Benjamin EJ, Harris WS, Robins SJ. Red blood cell fatty acids and biomarkers of inflammation: a cross-sectional study in a community-based cohort. Atherosclerosis 2015; 240:431-6. [PMID: 25897795 PMCID: PMC4511480 DOI: 10.1016/j.atherosclerosis.2015.03.043] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/13/2015] [Accepted: 03/31/2015] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Inflammation and inflammatory biomarkers have emerged as integral components and predictors of incident cardiovascular (CV) disease. Omega-3 fatty acids, particularly eicosapentaenoic and docosahexaenoic acids (EPA and DHA) have anti-inflammatory properties, and have been variably associated with lower blood pressure, favorable blood lipid changes, and reduced CV events. METHODS AND RESULTS We examined the cross-sectional association of red blood cell (RBC) fatty acids, representative of body membrane fatty acid composition, with 10 biomarkers active in multiple inflammatory pathways in 2724 participants (mean age 66 ± 9 years, 54% women, 8% minorities) from the Framingham Offspring and minority Omni Cohorts. After multivariable adjustment, the RBC EPA and DHA content was inversely correlated (all P ≤ 0.001) with 8 biomarkers: urinary isoprostanes (r = -0.16); and soluble interleukin-6 (r = -0.10); C-reactive protein (r = -0.08); tumor necrosis factor receptor 2 (r = -0.08); intercellular adhesion molecule-1 (r = -0.08); P-selectin (r = -0.06); lipoprotein-associated phospholipase-A2 mass (r = -0.11) and activity (r = -0.08). The correlations for monocyte chemoattractant protein-1 was -0.05, P = 0.006 and osteoprotegerin (r = -0.06, P = 0.002) were only nominally significant. CONCLUSION In our large community-based study, we observed modest inverse associations between several types of inflammatory biomarkers with RBC omega-3 fatty acid levels. Our findings are consistent with the hypothesis that omega-3 fatty acids have anti-inflammatory properties.
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Affiliation(s)
- João D Fontes
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA; Department of Cardiology and Preventive Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Faisal Rahman
- Boston University Medical Center, Boston, MA 02118, USA
| | - Sean Lacey
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
| | - Martin G Larson
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA; Department of Mathematics and Statistics, Boston University, Boston, MA, USA; Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - Ramachandran S Vasan
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA; Department of Cardiology and Preventive Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Epidemiology Department, Boston University School of Public Health, Boston, MA, USA
| | - Emelia J Benjamin
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA; Department of Cardiology and Preventive Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Epidemiology Department, Boston University School of Public Health, Boston, MA, USA
| | - William S Harris
- Department of Medicine, Sanford School of Medicine, University of South Dakota, and OmegaQuant Analytics, LLC, 5009 W. 12th St, Ste 8, Sioux Falls, SD 57106, USA.
| | - Sander J Robins
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA; Department of Cardiology and Preventive Medicine, Boston University School of Medicine, Boston, MA, USA; Department of Medicine, Boston University School of Medicine, Boston, MA, USA
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Jimenez EY, Mangani C, Ashorn P, Harris WS, Maleta K, Dewey KG. Breast milk from women living near Lake Malawi is high in docosahexaenoic acid and arachidonic acid. Prostaglandins Leukot Essent Fatty Acids 2015; 95:71-8. [PMID: 25601798 DOI: 10.1016/j.plefa.2014.12.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 12/02/2014] [Accepted: 12/03/2014] [Indexed: 11/21/2022]
Abstract
Adequate long-chain polyunsaturated fatty acid (LCPUFA) intake is critical during the fetal and infant periods. We quantified fatty acid content of breast milk (n=718) and plasma from six month old infants (n=412) in southern Malawi, and in usipa (n=3), a small dried fish from Lake Malawi. Compared to global norms, Malawian breast milk fatty acid content (% of total fatty acids) was well above average levels of arachidonic acid [ARA] (0.69% vs. 0.47%) and docosahexaenoic acid [DHA] (0.73% vs. 0.32%). Average Malawian infant plasma ARA (7.5%) and DHA (3.8%) levels were comparable to those reported in infants consuming breast milk with similar fatty acid content. The amounts (mg) of DHA, EPA and ARA provided by a 3 oz (85 g) portion of dried usipa (1439, 659 and 360, respectively) are considerably higher than those for dried salmon. Usipa may be an important source of LCPUFA for populations in this region.
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Affiliation(s)
- E Yakes Jimenez
- Departments of Individual, Family and Community Education and Family and Community Medicine, University of New Mexico, Albuquerque, NM, USA
| | - C Mangani
- Department of Community Health, College of Medicine, University of Malawi, Blantyre, Malawi; Department of International Health, University of Tampere School of Medicine, Tampere, Finland; Department of Paediatrics, Tampere University Hospital, Tampere, Finland
| | - P Ashorn
- Department of International Health, University of Tampere School of Medicine, Tampere, Finland; Department of Paediatrics, Tampere University Hospital, Tampere, Finland
| | - W S Harris
- Sanford School of Medicine, University of South Dakota and OmegaQuant Analytics, LLC, Sioux Falls, SD, USA(1)
| | - K Maleta
- Department of Community Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - K G Dewey
- Department of Nutrition and Program in International and Community Nutrition, University of California, Davis, CA, USA.
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Otsuka R, Kato Y, Imai T, Ando F, Shimokata H. Secular trend of serum docosahexaenoic acid, eicosapentaenoic acid, and arachidonic acid concentrations among Japanese-a 4- and 13-year descriptive epidemiologic study. Prostaglandins Leukot Essent Fatty Acids 2015; 94:35-42. [PMID: 25441967 DOI: 10.1016/j.plefa.2014.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 06/10/2014] [Accepted: 11/06/2014] [Indexed: 02/05/2023]
Abstract
Cross-sectional studies have shown age-related increases in blood docosahexaenoic and eicosapentaenoic acid and decreases in arachidonic acid. We describe serum docosahexaenoic, eicosapentaenoic, and arachidonic acid concentrations over 13 years (1997-2012) across four study waves and serum fatty acid composition over 4 years (2006-2012) between two study waves according to age groups by sex in the same subjects. We included 443 men and 435 women aged 40-79 years at baseline. Serum arachidonic acid concentrations increased in all sex and age groups over 13 years, and eicosapentaenoic or docosahexaenoic acid concentrations increased in males and females who were younger and middle-aged at baseline. Only serum arachidonic acid composition increased over 4 years in men and women who were 40-69 years at baseline, even after adjustment for arachidonic acid intake. These findings suggest a secular increase trend in serum arachidonic acid levels over 13 years among randomly selected community-dwelling middle-aged and elderly Japanese.
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Affiliation(s)
- Rei Otsuka
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, 430 7-Choume, Morioka-cho, Obu, Aichi 474-8511, Japan.
| | - Yuki Kato
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, 430 7-Choume, Morioka-cho, Obu, Aichi 474-8511, Japan
| | - Tomoko Imai
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, 430 7-Choume, Morioka-cho, Obu, Aichi 474-8511, Japan; Faculty of Human Life and Science, Doshisha Women׳s College of Liberal Arts, Teramachi Nishiiru, Imadegawa-dori, Kamigyo-ku, Kyoto, Japan
| | - Fujiko Ando
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, 430 7-Choume, Morioka-cho, Obu, Aichi 474-8511, Japan; Faculty of Health and Medical Sciences, Aichi Shukutoku University, 2-9 Katahira, Nagakute, Aichi, Japan
| | - Hiroshi Shimokata
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, 430 7-Choume, Morioka-cho, Obu, Aichi 474-8511, Japan; Graduate School of Nutritional Sciences, Nagoya University of Art and Science, 57 Takenoyama, Iwasaki, Nisshin, Aichi, Japan
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von Schacky C. Omega-3 fatty acids in cardiovascular disease--an uphill battle. Prostaglandins Leukot Essent Fatty Acids 2015; 92:41-7. [PMID: 24935800 DOI: 10.1016/j.plefa.2014.05.004] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 02/13/2014] [Accepted: 05/06/2014] [Indexed: 12/12/2022]
Abstract
In cardiology, results of recent large intervention trials with eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA) supplements were neutral. In contrast, in epidemiologic studies, an inverse relation between clinical events and intake of EPA+DHA was found which was steeper for higher levels of EPA+DHA. A standardized way of determining levels is the Omega-3 Index, which is the percentage of EPA+DHA of a total of 26 fatty acids measured in erythrocytes. According to current criteria, a low Omega-3 Index is a cardiovascular risk factor. What can explain this contradiction? Trial participants were recruited irrespective of their baseline status in EPA+DHA - an important predictor of events. Levels of EPA+DHA have a statistically normal distribution; together with the large inter-individual variability of levels' responding to increased intake, this created a large overlap of EPA+DHA levels between intervention and control groups. Moreover, trial participants were advised to take EPA+DHA supplements with breakfast, frequently a low fat meal, resulting in poor bioavailability. As a result, there is an urgent need for new intervention trials in cardiology, for which participants with a low baseline omega-3 index are recruited, and then treated with individually tailored doses of EPA+DHA to a prespecified target range.
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Affiliation(s)
- Clemens von Schacky
- Medizinische Klinik I, Department Preventive Cardiology, Ludwig-Maximilians-University, Ziemssenstrasse 1, D-80336 Munich, Germany; Omegametrix, Am Klopferspitz 19, 82152 Martinsried, Germany(1).
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Kaess BM, Harris WS, Lacey S, Larson MG, Hamburg NM, Vita JA, Robins SJ, Benjamin EJ, Mitchell GF, Vasan RS. The relation of red blood cell fatty acids with vascular stiffness, cardiac structure and left ventricular function: the Framingham Heart Study. Vasc Med 2014; 20:5-13. [PMID: 25520318 DOI: 10.1177/1358863x14560808] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Polyunsaturated fatty acids have been associated with beneficial influences on cardiovascular health. However, the underlying mechanisms are not clear, and data on the relations of polyunsaturated fatty acids to subclinical disease measures such as vascular stiffness and cardiac function are sparse and inconclusive. In a large community-based cohort, we examined the relations of omega-3 and other fatty acids to a comprehensive panel of vascular function measures (assessing microvascular function and large artery stiffness), cardiac structure and left ventricular function. Red blood cell (RBC) membrane fatty acid composition, a measure of long-term fatty acid intake, was assessed in participants of the Framingham Offspring Study and Omni cohorts and related to tonometry-derived measures of vascular stiffness and to a panel of echocardiographic traits using partial correlations. Up to n=3055 individuals (56% women, mean age 66 years) were available for analyses. In age- and sex-adjusted models, higher RBC omega-3 content was moderately associated (p≤0.002) with several measures of vascular stiffness and function in a protective direction. However, after multivariable adjustment, only an association of higher RBC omega-3 content with lower carotid-femoral pulse wave velocity (a measure of aortic stiffness) remained significant (r = -0.06, p=0.002). In secondary analyses, higher linoleic acid, the major nutritional omega-6 fatty acid, was associated with smaller left atrial size, even after multivariable adjustment (r = -0.064, p<0.001). In conclusion, in our cross-sectional community-based study, we found several associations consistent with the notion of protective effects of omega-3 and linoleic acid. The clinical significance of these modest associations remains to be elucidated.
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Affiliation(s)
- Bernhard M Kaess
- National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA Deutsches Herzzentrum, Technische Universität, München, Germany
| | - William S Harris
- Department of Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, USA Health Diagnostic Laboratory Inc., Richmond, VA, USA
| | - Sean Lacey
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
| | - Martin G Larson
- National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA Mathematics and Statistics Department, Boston University, Boston, MA, USA
| | - Naomi M Hamburg
- Evans Department of Medicine, Boston University School of Medicine, Boston, MA, USA Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Joseph A Vita
- Evans Department of Medicine, Boston University School of Medicine, Boston, MA, USA Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA
| | - Sander J Robins
- National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
| | - Emelia J Benjamin
- National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA Mathematics and Statistics Department, Boston University, Boston, MA, USA Evans Department of Medicine, Boston University School of Medicine, Boston, MA, USA Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA Sections of Preventive Medicine and Cardiology, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | | | - Ramachandran S Vasan
- National Heart, Lung, and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA Evans Department of Medicine, Boston University School of Medicine, Boston, MA, USA Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA Sections of Preventive Medicine and Cardiology, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
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74
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Arcand J, Scourboutakos MJ, Au JTC, L'Abbe MR. trans Fatty acids in the Canadian food supply: an updated analysis. Am J Clin Nutr 2014; 100:1116-23. [PMID: 25099549 DOI: 10.3945/ajcn.114.088732] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Dietary trans fatty acids (TFAs) increase the risk of heart disease. In 2007, Canada set voluntary TFA limits for industrial TFAs added to food and encouraged substitution of TFAs with unsaturated fats during reformulation. No longitudinal follow-up assessment of TFA amounts in foods has occurred in Canada since termination of a government-led Trans Fat Monitoring Program (TFMP). OBJECTIVE The objective was to conduct an updated assessment and longitudinally evaluate TFA amounts in the food supply and to determine whether saturated fats have replaced TFAs in reformulation. DESIGN This was a cross-sectional study that used 3 databases: TFMP (Health Canada, 2005-2009; n = 921), the University of Toronto Food Label Information Program (2010-2011; n = 5544), and the Restaurant Database (2010; n = 4272). Outcomes were TFAs as a percentage of fat, proportion of foods meeting TFA limits, and saturated fat amounts in foods with high or low TFAs. RESULTS The proportion of foods meeting TFA limits improved from 75% in 2005-2009 to 97% in 2010-2011, particularly in the following packaged foods: croissants (25% to 100%), pies (36% to 98%), cakes (43% to 90%), and garlic spreads (33% to 100%). Most restaurant categories assessed by the TFMP had 100% of foods meeting TFA limits. Some categories had a large proportion that exceeded TFA limits: dairy-free cheeses (100%), frosting (72.0%), lard and shortening (66.7%), coffee whiteners (66.7%), and restaurant-prepared biscuits and scones (47.4%). Saturated fat amounts were significantly higher (P < 0.05) among some foods with the lowest TFAs, such as cookies, brownies and squares, cakes with pudding/mousse, dessert toppings, and lard and shortening. CONCLUSIONS There has been an impressive improvement in TFA amounts in the Canadian food supply since the termination of the TFMP. However, action by the food industry is required to reduce TFAs in foods that exceed the recommended TFA limits and to minimize the use of saturated fats in replacing TFAs during reformulation.
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Affiliation(s)
- JoAnne Arcand
- From the Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Mary J Scourboutakos
- From the Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Jennifer T C Au
- From the Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Mary R L'Abbe
- From the Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
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75
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Pieters DJM, Mensink RP. Effects of stearidonic acid on serum triacylglycerol concentrations in overweight and obese subjects: a randomized controlled trial. Eur J Clin Nutr 2014; 69:121-6. [PMID: 25226826 DOI: 10.1038/ejcn.2014.193] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/17/2014] [Accepted: 07/22/2014] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Eicosapentaenoic acid (EPA), which may reduce the risk for coronary heart disease (CHD), can be synthesized at low rates from α-linolenic acid (ALA). The rate-limiting step for this conversion is the Δ6-desaturation of ALA into stearidonic acid (SDA). Thus providing oils rich in SDA may increase endogenous synthesis of EPA, which may subsequently lower serum triacylglycerol concentrations, an effect frequently observed after EPA supplementation. We therefore studied the effects of Echium oil on serum triacylglycerol concentrations and the omega-3 index, which correlate negatively with the risk for CHD. SUBJECTS/METHODS A randomized, double-blind, placebo-controlled crossover trial was conducted, in which 36 healthy overweight and slightly obese subjects daily received 10 g of Echium oil (providing 1.2 g of SDA) or a high oleic acid sunflower oil (HOSO) as control for 6 weeks, with a washout period of at least 14 days. Four subjects dropped out. Differences between periods were tested for statistical significance (P<0.05) using a paired t-test. RESULTS Serum triacylglycerol and other lipid concentrations were not significantly affected by consumption of Echium oil compared with HOSO. Echium oil significantly increased percentage of EPA in red blood cell (RBC) membranes with 0.14 ± 0.25% (mean ± s.d.) compared with HOSO (P=0.02). No significant effects on docosahexaenoic acid in RBC membranes or on the omega-3 index were found. CONCLUSIONS In healthy overweight and slightly obese subjects, an increased intake of SDA from Echium oil does not lower serum triacylglycerol concentrations. Despite an increase in the percentage of EPA in RBC membranes, the omega-3 index was not changed.
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Affiliation(s)
- D J M Pieters
- Department of Human Biology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - R P Mensink
- Department of Human Biology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
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76
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EPA and DHA Status of South Asian and White Canadians Living in the National Capital Region of Canada. Lipids 2014; 49:1057-69. [DOI: 10.1007/s11745-014-3942-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 08/12/2014] [Indexed: 11/25/2022]
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Pottala JV, Djira GD, Espeland MA, Ye J, Larson MG, Harris WS. Structural equation modeling for analyzing erythrocyte fatty acids in Framingham. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2014; 2014:160520. [PMID: 24959197 PMCID: PMC4052884 DOI: 10.1155/2014/160520] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 02/28/2014] [Accepted: 02/28/2014] [Indexed: 12/19/2022]
Abstract
Research has shown that several types of erythrocyte fatty acids (i.e., omega-3, omega-6, and trans) are associated with risk for cardiovascular diseases. However, there are complex metabolic and dietary relations among fatty acids, which induce correlations that are typically ignored when using them as risk predictors. A latent variable approach could summarize these complex relations into a few latent variable scores for use in statistical models. Twenty-two red blood cell (RBC) fatty acids were measured in Framingham (N = 3196). The correlation matrix of the fatty acids was modeled using structural equation modeling; the model was tested for goodness-of-fit and gender invariance. Thirteen fatty acids were summarized by three latent variables, and gender invariance was rejected so separate models were developed for men and women. A score was developed for the polyunsaturated fatty acid (PUFA) latent variable, which explained about 30% of the variance in the data. The PUFA score included loadings in opposing directions among three omega-3 and three omega-6 fatty acids, and incorporated the biosynthetic and dietary relations among them. Whether the PUFA factor score can improve the performance of risk prediction in cardiovascular diseases remains to be tested.
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Affiliation(s)
- James V. Pottala
- Health Diagnostic Laboratory Inc., Richmond, VA 23219, USA
- Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105, USA
| | - Gemechis D. Djira
- Department of Mathematics and Statistics, South Dakota State University, Brookings, SD 57007, USA
| | - Mark A. Espeland
- Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Jun Ye
- Department of Statistics, University of Akron, Akron, OH 44325, USA
| | - Martin G. Larson
- Department of Biostatistics, Boston University School of Public Health, Boston, MA 02218, USA
- Department of Mathematics and Statistics, Boston University, Boston, MA 02215, USA
- Framingham Heart Study, Framingham, MA 01702, USA
| | - William S. Harris
- Health Diagnostic Laboratory Inc., Richmond, VA 23219, USA
- Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105, USA
- OmegaQuant Analytics, Sioux Falls, SD 57107, USA
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Fisk HL, West AL, Childs CE, Burdge GC, Calder PC. The use of gas chromatography to analyze compositional changes of fatty acids in rat liver tissue during pregnancy. J Vis Exp 2014. [PMID: 24686562 DOI: 10.3791/51445] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Gas chromatography (GC) is a highly sensitive method used to identify and quantify the fatty acid content of lipids from tissues, cells, and plasma/serum, yielding results with high accuracy and high reproducibility. In metabolic and nutrition studies GC allows assessment of changes in fatty acid concentrations following interventions or during changes in physiological state such as pregnancy. Solid phase extraction (SPE) using aminopropyl silica cartridges allows separation of the major lipid classes including triacylglycerols, different phospholipids, and cholesteryl esters (CE). GC combined with SPE was used to analyze the changes in fatty acid composition of the CE fraction in the livers of virgin and pregnant rats that had been fed various high and low fat diets. There are significant diet/pregnancy interaction effects upon the omega-3 and omega-6 fatty acid content of liver CE, indicating that pregnant females have a different response to dietary manipulation than is seen among virgin females.
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Affiliation(s)
- Helena L Fisk
- Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton;
| | - Annette L West
- Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton
| | - Caroline E Childs
- Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton
| | - Graham C Burdge
- Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton
| | - Philip C Calder
- Human Development & Health Academic Unit, Faculty of Medicine, University of Southampton
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Does APOE genotype modify the relations between serum lipid and erythrocyte omega-3 fatty acid levels? J Cardiovasc Transl Res 2014; 7:526-32. [PMID: 24595593 PMCID: PMC4098055 DOI: 10.1007/s12265-014-9554-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 02/17/2014] [Indexed: 11/28/2022]
Abstract
Earlier reports indicated that patients with the apolipoprotein APOE ε4 allele responded to fish oil supplementation with a rise in serum low-density lipoprotein cholesterol (LDL-C) compared to ε3 homozygotes. In this study, we used clinical laboratory data to test the hypothesis that the cross-sectional relation between RBC omega-3 fatty acid status (the Omega-3 Index) and LDL-C was modified by APOE genotype. Data from 136,701 patients were available to compare lipid biomarker levels across Omega-3 Index categories associated with heart disease risk in all APOE genotypes. We found no adverse interactions between APOE genotype and the Omega-3 Index for LDL-C, LDL particle number, apoB, HDL-C, or triglycerides. However, we did find evidence that ε2 homozygotes lack an association between omega-3 status and LDL-C, apoB, and LDL particle number. In summary, we found no evidence for a deleterious relationship between lipid biomarkers and the Omega-3 Index by APOE genotype.
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80
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von Schacky C. Omega-3 index and cardiovascular health. Nutrients 2014; 6:799-814. [PMID: 24566438 PMCID: PMC3942733 DOI: 10.3390/nu6020799] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 02/12/2014] [Accepted: 02/13/2014] [Indexed: 12/14/2022] Open
Abstract
Recent large trials with eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the cardiovascular field did not demonstrate a beneficial effect in terms of reductions of clinical endpoints like total mortality, sudden cardiac arrest or other major adverse cardiac events. Pertinent guidelines do not uniformly recommend EPA + DHA for cardiac patients. In contrast, in epidemiologic findings, higher blood levels of EPA + DHA were consistently associated with a lower risk for the endpoints mentioned. Because of low biological and analytical variability, a standardized analytical procedure, a large database and for other reasons, blood levels of EPA + DHA are frequently assessed in erythrocytes, using the HS-Omega-3 Index® methodology. A low Omega-3 Index fulfills the current criteria for a novel cardiovascular risk factor. Neutral results of intervention trials can be explained by issues of bioavailability and trial design that surfaced after the trials were initiated. In the future, incorporating the Omega-3 Index into trial designs by recruiting participants with a low Omega-3 Index and treating them within a pre-specified target range (e.g., 8%-11%), will make more efficient trials possible and provide clearer answers to the questions asked than previously possible.
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Affiliation(s)
- Clemens von Schacky
- Preventive Cardiology, Medical Clinic and Poli-Clinic I, Ludwig Maximilians-University Munich, Ziemssenstr. 1, Munich 80336, Germany.
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81
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Harris WS, Schmitt TL. Unexpected similarity in RBC DHA and AA levels between bottlenose dolphins and humans. Prostaglandins Leukot Essent Fatty Acids 2014; 90:55-9. [PMID: 24393427 DOI: 10.1016/j.plefa.2013.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 11/16/2022]
Abstract
BACKGROUND The Omega-3 Index [red blood cell (RBC) content of eicosapentaenoic acid (EPA)+docosahexaenoic acid (DHA)] is inversely related to risk of cardiovascular disease in humans. In the U.S., the average Omega-3 Index is about 4-6% of RBC fatty acids, whereas in Japan it is 9-10%. The range of physiologically-possible levels for the Omega-3 Index in other mammals is unknown. OBJECTIVE To compare the RBC fatty acid composition of a common piscivorous mammal, the bottlenose dolphin (Tursiops truncatus), with that of (U.S.) humans, and to examine the extent to which dietary fatty acid patterns were reflected in RBCs. METHODS RBCs were isolated from routine blood samples collected from 35 healthy dolphins at two display facilities and were analyzed by gas chromatography. For humans, historic, deidentified RBC fatty acid data from our laboratory were used (n=11,329; mean age 58). RESULTS The mean Omega-3 Index of the dolphins was 19.9% compared with 6.0% for humans. EPA levels were 15.3% vs 1.2%, respectively, but DHA levels were virtually identical (4.6% vs 4.8%). Linoleic acid (LNA) levels were much lower in dolphins vs humans (0.5% vs 12.5%) whereas arachidonic acid (ARA) levels were similar (12.3% vs 14.5%). In a subgroup of humans with an Omega-3 Index in the >99.2 percentile, the mean index was similar to that of the dolphins. Based on an analysis of their food, the dolphins consumed about 60g of EPA+DHA per day as compared to about 0.1g in humans. CONCLUSION Dolphins have an Omega-3 Index that is (only) 3-4× higher than that of U.S. adults despite their intake of EPA+DHA being about 165× higher (as a percent of kcal). RBC, EPA and LNA levels are relatively more reflective of dietary intakes than are DHA and ARA levels. The mechanisms by which certain fatty acid levels appear to be fixed and others may vary in RBC membranes are unknown.
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Affiliation(s)
- William S Harris
- Sanford School of Medicine, University of South Dakota and OmegaQuant Analytics, LLC, Sioux Falls, SD, USA; Health Diagnostic Laboratory, Inc., Richmond, VA 23219, USA.
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82
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Augustine AH, Lowenstein LM, Harris WS, Shearer GC, Block RC. Treatment with omega-3 fatty acid ethyl-ester alters fatty acid composition of lipoproteins in overweight or obese adults with insulin resistance. Prostaglandins Leukot Essent Fatty Acids 2014; 90:69-75. [PMID: 24378016 PMCID: PMC3959884 DOI: 10.1016/j.plefa.2013.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2013] [Revised: 11/28/2013] [Accepted: 12/09/2013] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The effects of dietary fatty acid supplementation on lipoprotein fatty acid composition have rarely been described. PATIENTS AND METHODS Sixty-one overweight and obese adults with dyslipidemia and insulin resistance were randomized to placebo, 2g/day extended-release nicotinic acid (ERN), 4g/day prescription omega-3 fatty acid ethyl ester (P-OM3), or combination therapy for 16 weeks. Lipoprotein fatty acid composition was analyzed by gas chromatography pre- and post-treatment. RESULTS Treatment with P-OM3 or combination, but not ERN, increased proportions of eicosapentaenoic acid, docosahexaenoic acid, and docosapentaenoic acid, and reduced those for arachidonic acid in all lipoprotein fractions, with greatest impact in the high-density lipoprotein fraction. P-OM3-induced changes in eicosapentaenoic acid within low-density lipoproteins and very low-density lipoproteins were associated with beneficial effects on mean arterial pressure and pulse pressure. CONCLUSIONS P-OM3 supplementation, with or without ERN, was associated with differentially altered lipoprotein fatty acid composition and improved blood pressure parameters.
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Affiliation(s)
- Alicia H Augustine
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY, United States
| | - Lisa M Lowenstein
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY, United States
| | - William S Harris
- Cardiovascular Health Research Center, Sanford Research, Sioux Falls, SD, United States; Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States; Department of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States
| | - Gregory C Shearer
- Cardiovascular Health Research Center, Sanford Research, Sioux Falls, SD, United States; Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States; Department of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States
| | - Robert C Block
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY, United States; Department of Medicine, University of Rochester Medical Center, United States.
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83
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Pottala JV, Yaffe K, Robinson JG, Espeland MA, Wallace R, Harris WS. Higher RBC EPA + DHA corresponds with larger total brain and hippocampal volumes: WHIMS-MRI study. Neurology 2014; 82:435-42. [PMID: 24453077 DOI: 10.1212/wnl.0000000000000080] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
OBJECTIVE To test whether red blood cell (RBC) levels of marine omega-3 fatty acids measured in the Women's Health Initiative Memory Study were related to MRI brain volumes measured 8 years later. METHODS RBC eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and MRI brain volumes were assessed in 1,111 postmenopausal women from the Women's Health Initiative Memory Study. The endpoints were total brain volume and anatomical regions. Linear mixed models included multiple imputations of fatty acids and were adjusted for hormone therapy, time since randomization, demographics, intracranial volume, and cardiovascular disease risk factors. RESULTS In fully adjusted models, a 1 SD greater RBC EPA + DHA (omega-3 index) level was correlated with 2.1 cm(3) larger brain volume (p = 0.048). DHA was marginally correlated (p = 0.063) with total brain volume while EPA was less so (p = 0.11). There were no correlations between ischemic lesion volumes and EPA, DHA, or EPA + DHA. A 1 SD greater omega-3 index was correlated with greater hippocampal volume (50 mm(3), p = 0.036) in fully adjusted models. Comparing the fourth quartile vs the first quartile of the omega-3 index confirmed greater hippocampal volume (159 mm(3), p = 0.034). CONCLUSION A higher omega-3 index was correlated with larger total normal brain volume and hippocampal volume in postmenopausal women measured 8 years later. While normal aging results in overall brain atrophy, lower omega-3 index may signal increased risk of hippocampal atrophy. Future studies should examine whether maintaining higher RBC EPA + DHA levels slows the rate of hippocampal or overall brain atrophy.
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Affiliation(s)
- James V Pottala
- From the Department of Internal Medicine (J.V.P., W.S.H.), Sanford School of Medicine, University of South Dakota, Sioux Falls; Health Diagnostic Laboratory Inc. (J.V.P., W.S.H.), Richmond, VA; Department of Psychiatry (K.Y.), University of California Medical Center, San Francisco; Departments of Epidemiology and Internal Medicine (J.R., R.W.), University of Iowa College of Public Health, Iowa City; Department of Biostatistical Services (M.A.E.), Wake Forest School of Medicine, Winston-Salem, NC; and OmegaQuant Analytics (W.S.H.), Sioux Falls, SD
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84
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Harris WS, Varvel SA, Pottala JV, Warnick GR, McConnell JP. Comparative effects of an acute dose of fish oil on omega-3 fatty acid levels in red blood cells versus plasma: Implications for clinical utility. J Clin Lipidol 2013; 7:433-40. [DOI: 10.1016/j.jacl.2013.05.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 04/21/2013] [Accepted: 05/01/2013] [Indexed: 01/01/2023]
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85
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Association between n-3 polyunsaturated fatty acid content of red blood cells and inflammatory biomarkers in patients with peripheral artery disease. J Vasc Surg 2013; 58:1283-90. [PMID: 23830313 DOI: 10.1016/j.jvs.2013.05.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 05/08/2013] [Accepted: 05/08/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The n-3 polyunsaturated fatty acids are dietary components derived from fish oil with beneficial cardiovascular effects that may relate in part to anti-inflammatory properties. Peripheral artery disease (PAD) is characterized by a marked proinflammatory state. We hypothesized that the n-3 polyunsaturated fatty acids content of red blood cells (omega-3 index) would be correlated with biomarkers of inflammation and vascular function in a PAD cohort. METHODS This was a cross-sectional study of subjects who presented to an outpatient vascular surgery clinic for evaluation of PAD. We used linear regression to evaluate the independent association between the omega-3 index, inflammatory biomarkers (C-reactive protein [CRP], intercellular adhesion molecule-1, interleukin-6, and tumor-necrosis-factor-α) and endothelial function (brachial artery flow mediated dilation). RESULTS 64 subjects (61 claudicants and three with critical limb ischemia) were recruited for the study. The mean CRP level was 5.0 ± 5.0 mg/L, and the mean omega-3 index was 5.0% ± 1.8%. In an unadjusted model, the omega-3 index was negatively associated with CRP (38% increase in CRP for one standard deviation decrease in the omega-3 index; P = .007), which remained significant after adjustment for age, body mass index, smoking, ankle-brachial index, and high-density lipoprotein (33%; P = .04). There was also evidence for independent associations between the omega-3 index and IL-6 (P = .001). There were no significant associations between the omega-3 index and vascular function tests. CONCLUSIONS In a cohort of patients with PAD, the omega-3 index was inversely associated with biomarkers of inflammation even after adjustment for covariates including the ankle-brachial index. Because patients with PAD have a high inflammatory burden, further studies should be conducted to determine if manipulation of omega-3 index via dietary changes or fish oil supplementation could improve inflammation and symptoms in these patients.
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Harris WS, Pottala JV, Varvel SA, Borowski JJ, Ward JN, McConnell JP. Erythrocyte omega-3 fatty acids increase and linoleic acid decreases with age: observations from 160,000 patients. Prostaglandins Leukot Essent Fatty Acids 2013; 88:257-63. [PMID: 23375840 DOI: 10.1016/j.plefa.2012.12.004] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/21/2012] [Accepted: 12/24/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND The fatty acid (FA) composition of the red blood cell (RBC) has been reported to provide prognostic information regarding risk for coronary heart disease (CHD). In particular, the Omega-3 Index (RBC eicosapentaenoic acid+docosahexaenoic acid, EPA+DHA) has been shown to be independently and inversely related to risk for sudden cardiac death and for acute coronary syndromes. Higher linoleic acid (n-6) and lower trans FA levels have also been associated with improved CHD outcomes. Accordingly, the RBC FA panel has recently been introduced in routine clinical laboratory testing. OBJECTIVE The purpose of this study was to define age- and gender-based norms for RBC FA levels. METHODS RBC FA profiles from about 160,000 patients (48% from males, 52% from females) were measured at Health Diagnostic Laboratory. These data were used to create age decade and gender-specific norms (percentiles). FA values were expressed as a percent of total identified FA. RESULTS Compared to men, women generally had higher C18 trans levels, and between the ages of 10-29 years, they had DHA and lower EPA levels. Among the major FA classes, saturated (41% of total) and trans (∼0.85%) fats did not vary appreciably by age, whereas monounsaturated fats tended to rise slightly. Of the two major n-6 polyunsaturates, arachidonic and linoleic acids, the former was unchanged across decades (16.4% abundance) whereas the latter decreased by about 2 percentage points (13.0-11.1%). The overall median Omega-3 Index was 4.5%, and across the decades it increased by about 1.5 percentage points. The Omega-3 Index and linoleic acid stabilized after age 70. CONCLUSION Whereas RBC saturated, mono- and polyunsaturated FA levels are generally stable across the lifespan, there is a shift in the composition of the latter, with an increase in the Omega-3 Index and a decrease in linoleic acid. Higher DHA and lower EPA levels in younger women is consistent with enhanced conversion of EPA to DHA during the early reproductive years. The availability of RBC FA norms will facilitate research into the relationships between altered FA status and human disease, and will help physicians evaluate the n-3 FA status of their patients.
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Affiliation(s)
- William S Harris
- Health Diagnostic Laboratory, Inc., Richmond, VA, United States.
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87
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Schwenke DC, Foreyt JP, Miller ER, Reeves RS, Vitolins MZ. Plasma concentrations of trans fatty acids in persons with type 2 diabetes between September 2002 and April 2004. Am J Clin Nutr 2013; 97:862-71. [PMID: 23446895 PMCID: PMC3607659 DOI: 10.3945/ajcn.112.046508] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND transFatty acids (TFAs) increase cardiovascular disease risk. TFAs and polyunsaturated fatty acids (PUFAs) in the food supply may be declining with reciprocal increases in cis-monounsaturated fatty acids (MUFAs) and saturated fatty acids (SFAs). OBJECTIVES We sought to determine whether plasma 18-carbon TFA and PUFA concentrations might decrease over time and whether there might be reciprocal increases in plasma cis-MUFAs and SFAs. DESIGN We studied 305 persons (171 women) taking part in Look AHEAD (Action for Health in Diabetes), a randomized trial of lifestyle intervention for weight loss to reduce major cardiovascular events in overweight and obese adults (aged 45-76 y) with type 2 diabetes who also participated in an ancillary study of oxidative stress. This study was a cross-sectional analysis of TFAs, cis-MUFAs, SFAs, and PUFAs measured in plasma before intervention (September 2002-April 2004). RESULTS In a model that included demographic characteristics, plasma total fatty acid concentration, BMI, serum insulin, statin use, season, and longitudinal time trend (R(2) = 0.167, P < 0.0001), plasma TFAs decreased by 13.5%/y (95% CI: -22.7, -3.2%/y; absolute decrease 7.0 mg · L(-1) · y(-1); 95% CI: -12.5, -1.6 mg · L(-1) · y(-1); P = 0.012). This longitudinal trend was not significantly altered by further adjustment for dietary variables and physical activity. In contrast, longitudinal trends for PUFAs, cis-MUFAs, and SFAs were weak and not significant. CONCLUSIONS This change in plasma concentrations of TFAs is consistent with changes in fatty acid composition that food manufacturers are likely to have made to avoid declaring TFAs on food labels. Further research will be needed to determine the overall effect of these changes on cardiovascular risk. The Look AHEAD trial is registered at clinicaltrials.govas NCT00017953.
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Harris WS, Pottala JV, Lacey SM, Vasan RS, Larson MG, Robins SJ. Clinical correlates and heritability of erythrocyte eicosapentaenoic and docosahexaenoic acid content in the Framingham Heart Study. Atherosclerosis 2012; 225:425-31. [PMID: 22727409 PMCID: PMC3593234 DOI: 10.1016/j.atherosclerosis.2012.05.030] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/22/2012] [Accepted: 05/23/2012] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Red blood cell (RBC) levels of eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA, the omega-3 index, expressed as a percent of total fatty acids) are inversely related to risk for cardiovascular disease (CVD). Although several mechanisms underlying this relationship have been proposed, understanding the associations between the omega-3 index and markers of CVD in the community can shed additional light on this question. The objectives of this study were to define the relations between the omega-3 index and clinical factors and to determine the heritability of the omega-3 index. METHODS RBC samples (n = 3196) drawn between 2005 and 2008 from participants in the Framingham Study [Examination 8 of the Offspring cohort plus Examination 3 of the Omni (minorities) cohort] were analyzed for fatty acid composition by gas chromatography. RESULTS The mean (SD) omega-3 index was 5.6% (1.7%). In multivariable regression models, the factors significantly and directly associated with the omega-3 index were age, female sex, higher education, fish oil supplementation, dietary intake of EPA + DHA, aspirin use, lipid pharmacotherapy, and LDL-cholesterol. Factors inversely associated were Offspring cohort, heart rate, waist girth, triglycerides and smoking. The total explained variability in the omega-3 index for the fully adjusted model was 73%, which included major components due to heritability (24%), EPA + DHA intake (25%), and fish oil supplementation (15%). CONCLUSION The variability in the omega-3 index is determined primarily by dietary and genetic factors. An increased omega-3 index is associated with a generally cardioprotective risk factor milieu.
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Affiliation(s)
- William S Harris
- Sanford Research/USD, 2301 E. 60th St. N, Sioux Falls, SD 57104, USA.
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