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Hopkins SE, Orr E, Boyer BB, Thompson B. Culturally adapting an evidence-based intervention to promote a healthy diet and lifestyle for Yup'ik Alaska native communities. Int J Circumpolar Health 2023; 82:2159888. [PMID: 36544274 PMCID: PMC9788688 DOI: 10.1080/22423982.2022.2159888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Underserved populations are at increased risk for obesity and related cardiovascular disease, type 2 diabetes, and other chronic diseases. Lack of access to healthy foods, sedentary behaviour, and other social environmental factors contribute to disease risk. Yup'ik Alaska Native communities are experiencing lifestyle changes that are likely to affect their cardiometabolic risks. Barrera & Castro's Cultural Adaptation Framework was used to adapt an evidence-based intervention (EBI) originally designed for Latino communities for use in Yup'ik communities. Focus groups and key informant interviews were held in two Yup'ik communities. Major themes included causes of obesity, barriers and facilitators to healthy foods and physical activity, and intervention ideas. The adaptation process was guided by a Community Planning Group of Yup'ik women and included information gathering, preliminary adaptation design, preliminary adaptation tests, and adaptation refinement. Two of the adapted educational modules were pilot tested. Involving community members as co-researchers in cultural adaptation is vital for an EBI to be effective in another population. Small group gatherings led by local lay health workers are culturally appropriate and may be an effective health promotion model in Yup'ik communities. Social environmental factors affecting healthy food availability and physical activity need further exploration.
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Affiliation(s)
- Scarlett E. Hopkins
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, USA
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Eliza Orr
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Bert B. Boyer
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, USA
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Beti Thompson
- Cancer Prevention Program, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
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Boyer BB, Wiener HW, Hopkins SE, Purnell JQ, O'Brien DM, Aliwarga T, Pomeroy JJ, Aslan JE, Thummel KE, Tiwari HK. Obesity-Associated Dyslipidemia Is Moderated by Habitual Intake of Marine-Derived n-3 Polyunsaturated Fatty Acids in Yup'ik Alaska Native People: A Cross-Sectional Mediation-Moderation Analysis. J Nutr 2023; 153:279-292. [PMID: 36913463 PMCID: PMC10196570 DOI: 10.1016/j.tjnut.2022.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 10/26/2022] [Accepted: 10/31/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Obesity leads to insulin resistance, altered lipoprotein metabolism, dyslipidemia, and cardiovascular disease. The relationship between long-term intake of n-3 polyunsaturated fatty acids (n-3 PUFAs) and prevention of cardiometabolic disease remains unresolved. OBJECTIVES The aim of this study was to explore direct and indirect pathways between adiposity and dyslipidemia, and the degree to which n-3 PUFAs moderate adiposity-induced dyslipidemia in a population with highly variable n-3 PUFA intake from marine foods. METHODS In total, 571 Yup'ik Alaska Native adults (18-87 y) were enrolled in this cross-sectional study. The red blood cell (RBC) nitrogen isotope ratio (15N/14N, or NIR) was used as a validated objective measure of n-3 PUFA intake. EPA and DHA were measured in RBCs. Insulin sensitivity and resistance were estimated by the HOMA2 method. Mediation analysis was conducted to evaluate the contribution of the indirect causal path between adiposity and dyslipidemia mediated through insulin resistance. Moderation analysis was used to assess the influence of dietary n-3 PUFAs on the direct and indirect paths between adiposity and dyslipidemia. Outcomes of primary interest included plasma total cholesterol (TC), LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C), non-HDL-C, and triglycerides (TG). RESULTS In this Yup'ik study population, we found that up to 21.6% of the total effects of adiposity on plasma TG, HDL-C, and non-HDL-C are mediated through measures of insulin resistance or sensitivity. Moreover, RBC DHA and EPA moderated the positive association between waist circumference (WC) and TC or non-HDL-C, whereas only DHA moderated the positive association between WC and TG. However, the indirect path between WC and plasma lipids was not significantly moderated by dietary n-3 PUFAs. CONCLUSIONS Intake of n-3 PUFAs may independently reduce dyslipidemia through the direct path resulting from excess adiposity in Yup'ik adults. NIR moderation effects suggest that additional nutrients contained in n-3 PUFA-rich foods may also reduce dyslipidemia.
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Affiliation(s)
- Bert B Boyer
- Oregon Health & Science University, Departments of Obstetrics and Gynecology and Medicine, Portland, OR, USA.
| | - Howard W Wiener
- University of Alabama at Birmingham, Department of Epidemiology, Birmingham, AL, USA
| | - Scarlett E Hopkins
- Oregon Health & Science University, Departments of Obstetrics and Gynecology and Medicine, Portland, OR, USA
| | - Jonathan Q Purnell
- Oregon Health & Science University, Departments of Obstetrics and Gynecology and Medicine, Portland, OR, USA
| | - Diane M O'Brien
- University of Alaska Fairbanks, Department of Biology and Wildlife, Fairbanks, AK, USA
| | - Theresa Aliwarga
- University of Washington, Department of Pharmaceutics, Seattle, WA, USA
| | - Jeremy J Pomeroy
- Marshfield Clinic, Clinical Research Center, Marshfield, WI, USA
| | - Joseph E Aslan
- Oregon Health & Science University, Departments of Obstetrics and Gynecology and Medicine, Portland, OR, USA
| | - Kenneth E Thummel
- University of Washington, Department of Pharmaceutics, Seattle, WA, USA
| | - Hemant K Tiwari
- University of Alabama at Birmingham, Department of Biostatistics, Birmingham, AL, USA
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Glutamine supplementation moderately affects growth, plasma metabolite and free amino acid patterns in neonatal low birth weight piglets. Br J Nutr 2022; 128:2330-2340. [PMID: 35144703 PMCID: PMC9723486 DOI: 10.1017/s0007114522000459] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Low birth weight (LBW) neonates show impaired growth compared with normal birth weight (NBW) neonates. Glutamine (Gln) supplementation benefits growth of weaning piglets, while the effect on neonates is not sufficiently clear. We examined the effect of neonatal Gln supplementation on piglet growth, milk intake and metabolic parameters. Sow-reared pairs of newborn LBW (0·8-1·2 kg) and NBW (1·4-1·8 kg) male piglets received Gln (1 g/kg body mass (BM)/d; Gln-LBW, Gln-NBW; n 24/group) or isonitrogenous alanine (1·22 g/kg BM/d; Ala-LBW; Ala-NBW; n 24/group) supplementation at 1-5 or 1-12 d of age (daily in three equal portions at 07:00, 12:00 and 17:00 by syringe feeding). We measured piglet BM, milk intake (1, 11-12 d), plasma metabolite, insulin, amino acid (AA) and liver TAG concentrations (5, 12 d). The Gln-LBW group had higher BM (+7·5%, 10 d, P = 0·066; 11-12 d, P < 0·05) and milk intake (+14·7%, P = 0·015) than Ala-LBW. At 5 d, Ala-LBW group had higher plasma TAG (+34·7%, P < 0·1) and lower carnosine (-22·5%, P < 0·05) than Ala-NBW and Gln-LBW, and higher liver TAG (+66·9%, P = 0·029) than Ala-NBW. At 12 d, plasma urea was higher (+37·5%, P < 0·05) with Gln than Ala supplementation. Several proteinogenic AA in plasma were lower (P < 0·05) in Ala-NBW v. Gln-NBW. Plasma arginine was higher (P < 0·05) in Gln-NBW v Ala-NBW piglets (5, 12 d). Supplemental Gln moderately improved growth and milk intake and affected lipid metabolism in LBW piglets and AA metabolism in NBW piglets, suggesting effects on intestinal and liver function.
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Heras A, Gomi R, Young M, Chang CL, Wasserman E, Sharma A, Wu W, Gu J, Balaji U, White R, Permaul P, Janahi I, Worgall TS, Worgall S. Dietary long-chain omega 3 fatty acids modify sphingolipid metabolism to facilitate airway hyperreactivity. Sci Rep 2022; 12:19735. [PMID: 36396956 PMCID: PMC9672127 DOI: 10.1038/s41598-022-21083-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/22/2022] [Indexed: 11/19/2022] Open
Abstract
Omega-3 polyunsaturated fatty acids (n-3 PUFAs) are essential nutrients that can affect inflammatory responses. While n-3 PUFAs are generally considered beneficial for cardiovascular disease and obesity, the effects on asthma, the most common inflammatory lung disease are unclear. While prenatal dietary n-3 PUFAs decrease the risk for childhood wheezing, postnatal dietary n-3 PUFAs can worsen allergic airway inflammation. Sphingolipid metabolism is also affected by dietary n-3 PUFAs. Decreased sphingolipid synthesis leads to airway hyperreactivity, besides inflammation, a cardinal feature of asthma, and common genetic asthma risk alleles lead to lower sphingolipid synthesis. We investigated the effect of dietary n-3 PUFAs on sphingolipid metabolism and airway reactivity. Comparing a fish-oil diet with a high n-3 PUFA content (FO) to an isocaloric coconut oil-enriched diet (CO), we found an n-3 PUFA-dependent effect on increased airway reactivity, that was not accompanied by inflammation. Lung and whole blood content of dihydroceramides, ceramides, sphingomyelins, and glucosylceramides were lower in mice fed the n-3 PUFA enriched diet consistent with lower sphingolipid synthesis. In contrast, phosphorylated long chain bases such as sphingosine 1-phosphate were increased. These findings suggest that dietary n-3 PUFAs affect pulmonary sphingolipid composition to favor innate airway hyperreactivity, independent of inflammation, and point to an important role of n-3 PUFAs in sphingolipid metabolism.
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Affiliation(s)
- Andrea Heras
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Rika Gomi
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Madeline Young
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Chuchun L Chang
- Institute of Human Nutrition/Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Emily Wasserman
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
- Weill Cornell Medicine, Drukier Institute for Children's Health, New York, USA
| | - Anurag Sharma
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Wenzhu Wu
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Jinghua Gu
- Weill Cornell Medicine, Drukier Institute for Children's Health, New York, USA
| | - Uthra Balaji
- Weill Cornell Medicine, Drukier Institute for Children's Health, New York, USA
| | - Rachel White
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | - Perdita Permaul
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA
| | | | - Tilla S Worgall
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, USA
| | - Stefan Worgall
- Department of Pediatrics, Weill Cornell Medicine, 413 East 69th Street, Room 1200, New York, NY, 10021, USA.
- Weill Cornell Medicine, Drukier Institute for Children's Health, New York, USA.
- Department of Genetic Medicine, Weill Cornell Medicine, New York, USA.
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Deng Y, Chen H, Huang Y, Zhang Y, Ren H, Fang M, Wang Q, Chen W, Hale RC, Galloway TS, Chen D. Long-Term Exposure to Environmentally Relevant Doses of Large Polystyrene Microplastics Disturbs Lipid Homeostasis via Bowel Function Interference. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:15805-15817. [PMID: 36282942 DOI: 10.1021/acs.est.1c07933] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The question of whether long-term chronic exposure to microplastics (MPs) could induce dose- and size-dependent adverse effects in mammals remains controversial and poorly understood. Our study explored potential health risks from dietary exposure to environmentally relevant doses of polystyrene (PS) MPs, through a mouse model and integrated analyses of the interruptions of fecal microbial metagenomes and plasma lipidomes. After 21 weeks of exposure to the MPs (40-100 μm), mice mainly exhibited gut microbiota dysbiosis, tissue inflammation, and plasma lipid metabolism disorder, although no notable accumulation of MPs was observed in the gut or liver. The change of the relative abundance of microbiota was strongly associated with the exposure dose and size of MPs while less significant effects were observed in gut damage and abnormal lipid metabolism. Moreover, multiomics data suggested that the host abnormal lipid metabolism was closely related to bowel function disruptions, including gut microbiota dysbiosis, increased gut permeability, and inflammation induced by MPs. We revealed for the first time that even without notable accumulation in mouse tissues, long-term exposure to MPs at environmentally relevant doses could still induce widespread health risks. This raises concern on the health risks from the exposure of humans and other mammals to environmentally relevant dose MPs.
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Affiliation(s)
- Yongfeng Deng
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Hexia Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Yichao Huang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
| | - Yan Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Mingliang Fang
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Qing Wang
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Robert C Hale
- Virginia Institute of Marine Science, William & Mary, P.O. Box 1346, Gloucester Point, Virginia 23062, United States
| | - Tamara S Galloway
- Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, Stocker Road, Exeter, Devon EX4 4QD, United Kingdom
| | - Da Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, China
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Evidence that complement and coagulation proteins are mediating the clinical response to omega-3 fatty acids: A mass spectrometry-based investigation in subjects at clinical high-risk for psychosis. Transl Psychiatry 2022; 12:454. [PMID: 36307392 PMCID: PMC9616837 DOI: 10.1038/s41398-022-02217-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 09/21/2022] [Accepted: 10/04/2022] [Indexed: 11/08/2022] Open
Abstract
Preliminary evidence indicates beneficial effects of omega-3 polyunsaturated fatty acids (PUFAs) in early psychosis. The present study investigates the molecular mechanism of omega-3 PUFA-associated therapeutic effects in clinical high-risk (CHR) participants. Plasma samples of 126 CHR psychosis participants at baseline and 6-months follow-up were included. Plasma protein levels were quantified using mass spectrometry and erythrocyte omega-3 PUFA levels were quantified using gas chromatography. We examined the relationship between change in polyunsaturated PUFAs (between baseline and 6-month follow-up) and follow-up plasma proteins. Using mediation analysis, we investigated whether plasma proteins mediated the relationship between change in omega-3 PUFAs and clinical outcomes. A 6-months change in omega-3 PUFAs was associated with 24 plasma proteins at follow-up. Pathway analysis revealed the complement and coagulation pathway as the main biological pathway to be associated with change in omega-3 PUFAs. Moreover, complement and coagulation pathway proteins significantly mediated the relationship between change in omega-3 PUFAs and clinical outcome at follow-up. The inflammatory protein complement C5 and protein S100A9 negatively mediated the relationship between change in omega-3 PUFAs and positive symptom severity, while C5 positively mediated the relationship between change in omega-3 and functional outcome. The relationship between change in omega-3 PUFAs and cognition was positively mediated through coagulation factor V and complement protein C1QB. Our findings provide evidence for a longitudinal association of omega-3 PUFAs with complement and coagulation protein changes in the blood. Further, the results suggest that an increase in omega-3 PUFAs decreases symptom severity and improves cognition in the CHR state through modulating effects of complement and coagulation proteins.
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Jehi T, Sabaté J, Bitok E, Sala-Vila A, Ros E, Cofan M, Oda K, Rajaram S. n-3 index is associated with cardiometabolic risk factors but is not improved by walnut intake in free-living elderly: a single-blind, randomised controlled trial. Br J Nutr 2022; 129:1-8. [PMID: 35687008 DOI: 10.1017/s0007114522001751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
n-3 index, the erythrocyte proportion of the EPA + DHA fatty acids is a clinical marker of age-related disease risk. It is unclear whether regular intake of α-linolenic acid (ALA), a plant-derived n-3 polyunsaturated fatty acid, raises n-3 index in older adults. Of the 356 participants at the Loma Linda, CA centre from the original study, a randomly selected subset (n 192) was included for this secondary analysis (mostly Caucasian women, mean age 69 years). Participants were assigned to either the walnut (15 % of daily energy from walnuts) or the control group (usual diet, no walnuts) for 2 years. Erythrocyte fatty acids were determined at baseline and 1-year following intervention. No differences were observed for erythrocyte EPA, but erythrocyte DHA decreased albeit modestly in the walnut group (-0·125 %) and slightly improved in the control group (0·17 %). The change in n-3 index between the walnut and control groups was significantly different only among fish consumers (those who ate fish ≥ once/month). Longitudinal analyses combining both groups showed significant inverse association between the 1-year changes of the n-3 index and fasting plasma TAG (ß = -10), total cholesterol (ß = -5·59) and plasma glucose (ß = -0·27). Consuming ALA-rich walnuts failed to improve n-3 index in elders. A direct source of EPA/DHA may be needed to achieve desirable n-3 index, as it is inversely associated with cardiometabolic risk. Nevertheless, incorporating walnuts as part of heart healthy diets is still encouraged.
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Affiliation(s)
- Tony Jehi
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, USA
| | - Joan Sabaté
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, USA
| | - Edward Bitok
- Department of Nutrition & Dietetics, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA
| | - Aleix Sala-Vila
- The Fatty Acid Research Institute, Sioux Falls, SD, USA
- Cardiovascular Risk and Nutrition Research Group, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | - Emilio Ros
- Lipid Clinic, Endocrinology and Nutrition Service, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Montse Cofan
- Lipid Clinic, Endocrinology and Nutrition Service, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Keiji Oda
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, USA
| | - Sujatha Rajaram
- Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, USA
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Nascè A, Gariani K, Jornayvaz FR, Szanto I. NADPH Oxidases Connecting Fatty Liver Disease, Insulin Resistance and Type 2 Diabetes: Current Knowledge and Therapeutic Outlook. Antioxidants (Basel) 2022; 11:antiox11061131. [PMID: 35740032 PMCID: PMC9219746 DOI: 10.3390/antiox11061131] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 12/15/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD), characterized by ectopic fat accumulation in hepatocytes, is closely linked to insulin resistance and is the most frequent complication of type 2 diabetes mellitus (T2DM). One of the features connecting NAFLD, insulin resistance and T2DM is cellular oxidative stress. Oxidative stress refers to a redox imbalance due to an inequity between the capacity of production and the elimination of reactive oxygen species (ROS). One of the major cellular ROS sources is NADPH oxidase enzymes (NOX-es). In physiological conditions, NOX-es produce ROS purposefully in a timely and spatially regulated manner and are crucial regulators of various cellular events linked to metabolism, receptor signal transmission, proliferation and apoptosis. In contrast, dysregulated NOX-derived ROS production is related to the onset of diverse pathologies. This review provides a synopsis of current knowledge concerning NOX enzymes as connective elements between NAFLD, insulin resistance and T2DM and weighs their potential relevance as pharmacological targets to alleviate fatty liver disease.
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Affiliation(s)
- Alberto Nascè
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
| | - Karim Gariani
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
| | - François R. Jornayvaz
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Correspondence: (F.R.J.); (I.S.)
| | - Ildiko Szanto
- Service of Endocrinology, Diabetes, Nutrition and Patient Therapeutic Education, Geneva University Hospitals, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland; (A.N.); (K.G.)
- Department of Medicine, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Diabetes Center of the Faculty of Medicine, University of Geneva Medical School, 1211 Geneva, Switzerland
- Correspondence: (F.R.J.); (I.S.)
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Boyer BB, Hopkins SE, Wiener HW, Purnell JQ, O'Brien DM, Zhang CX, Aslan JE, Aliwarga T, Pomeroy JJ, Thummel KE, Tiwari HK. Habitual Intake of Marine-Derived n-3 PUFAs is Inversely Associated with a Cardiometabolic Inflammatory Profile in Yup'ik Alaska Native People. J Nutr 2022; 152:844-855. [PMID: 34871429 PMCID: PMC8891177 DOI: 10.1093/jn/nxab412] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/17/2021] [Accepted: 12/01/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The relationship between dietary n-3 PUFAs and the prevention of cardiometabolic diseases, including type 2 diabetes, is unresolved. Examination of the association between n-3 PUFAs and chronic low-grade inflammation in a population where many individuals have had an extremely high intake of marine mammals and fish throughout their lifespan may provide important clues regarding the impact of n-3 PUFAs on health. OBJECTIVES The aim of this study was to explore associations between concentrations of n-3 PUFAs resulting from habitual intake of natural food sources high in fish and marine mammals with immune biomarkers of metabolic inflammation and parameters of glucose regulation. METHODS A total of 569 Yup'ik Alaska Native adults (18-87 years old) were enrolled in this cross-sectional study between December 2016 and November 2019. The RBC nitrogen isotope ratio (NIR; 15N/14N) was used as a validated measure of n-3 PUFA intake to select 165 participant samples from the first and fourth quartiles of n-3 PUFA intakes. Outcomes included 38 pro- and anti-inflammatory cytokines and 8 measures of glucose homeostasis associated with type 2 diabetes risks. These outcomes were evaluated for their associations with direct measurements of EPA, DHA, and arachidonic acid in RBCs. ANALYSIS Linear regression was used to detect significant relationships with cytokines and n-3 PUFAs, adiposity, and glucose-related variables. RESULTS The DHA concentration in RBC membranes was inversely associated with IL-6 (β = -0.0066; P < 0.001); EPA was inversely associated with TNFα (β = -0.4925; P < 0.001); and the NIR was inversely associated with Monocyte chemoattractant protein-1 (MCP-1) (β = -0.8345; P < 0.001) and IL-10 (β = -1.2868; P < 0.001). CONCLUSIONS Habitual intake of marine mammals and fish rich in n-3 PUFAs in this study population of Yup'ik Alaska Native adults is associated with reduced systemic inflammation, which may contribute to the low prevalence of diseases in which inflammation plays an important role.
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Affiliation(s)
- Bert B Boyer
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR, USA
| | - Scarlett E Hopkins
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR, USA
| | - Howard W Wiener
- Department of Statistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jonathan Q Purnell
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Diane M O'Brien
- Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Cindy X Zhang
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Joseph E Aslan
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Theresa Aliwarga
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Jeremy J Pomeroy
- Clinical Research Center, Marshfield Clinic, Marshfield, WI, USA
| | - Kenneth E Thummel
- Department of Pharmaceutics, University of Washington, Seattle, WA, USA
| | - Hemant K Tiwari
- Department of Statistics, University of Alabama at Birmingham, Birmingham, AL, USA
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Susai SR, Sabherwal S, Mongan D, Föcking M, Cotter DR. Omega-3 fatty acid in ultra-high-risk psychosis: A systematic review based on functional outcome. Early Interv Psychiatry 2022; 16:3-16. [PMID: 33652502 DOI: 10.1111/eip.13133] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 01/12/2021] [Accepted: 01/31/2021] [Indexed: 12/27/2022]
Abstract
AIM Among different types of poly unsaturated fatty acids, omega-3 fatty acids (FA) play a substantial role in brain development and functioning. This review was designed to evaluate and synthesize available evidence regarding omega-3 FAs and functional outcome in the ultra-high-risk (UHR) population. METHODS An electronic search in PubMed, EMBASE, PSYCINFO and COCHRANE search engines has been performed for all articles published until January 2019. The studies that have data regarding omega-3 FAs and functional outcome in UHR population were included. RESULTS Out of 397 nonduplicate citations, 19 articles met selection criteria. These articles were from four different primary studies, namely the Program of Rehabilitation and Therapy (PORT), the North American Prodromal Longitudinal Studies (NAPLS), Vienna High Risk study (VHR) and the NEURAPRO. The data from the NAPLS study found a positive correlation between functional improvement and frequency of dietary intake omega-3 FA. Moreover, among the erythrocyte omega-3 FA only eicosapentaenoic acid (EPA) showed a positive correlation with functional score. The VHR study found long-term improvement in functional outcome in omega-3 group compared to control, whereas such difference was noticed in the NEURAPRO. In the VHR study both omega-3 and omega-6 together predicted the functional improvement at 12 weeks. CONCLUSIONS The number of studies available remains insufficient and more studies with standardized outcome measures in a clinically comparable UHR population would be of more value to understand the clinical benefits of omega-3 FA in the UHR population.
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Affiliation(s)
- Subash Raj Susai
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Sophie Sabherwal
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - David Mongan
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Melanie Föcking
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - David R Cotter
- Department of Psychiatry, Royal College of Surgeons in Ireland, Dublin, Ireland
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11
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Susai SR, Mongan D, Healy C, Cannon M, Nelson B, Markulev C, Schäfer MR, Berger M, Mossaheb N, Schlögelhofer M, Smesny S, Hickie IB, Berger GE, Chen EYH, de Haan L, Nieman DH, Nordentoft M, Riecher-Rössler A, Verma S, Thompson A, Yung AR, McGorry PD, Föcking M, Cotter D, Amminger GP. The association of plasma inflammatory markers with omega-3 fatty acids and their mediating role in psychotic symptoms and functioning: An analysis of the NEURAPRO clinical trial. Brain Behav Immun 2022; 99:147-156. [PMID: 34624483 DOI: 10.1016/j.bbi.2021.09.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/17/2021] [Accepted: 09/25/2021] [Indexed: 12/12/2022] Open
Abstract
There is increasing evidence that dysregulation of polyunsaturated fatty acids (FAs) mediated membrane function plays a role in the pathophysiology of schizophrenia. Even though preclinical findings have supported the anti-inflammatory properties of omega-3 FAs on brain health, their biological roles as anti-inflammatory agents and their therapeutic role on clinical symptoms of psychosis risk are not well understood. In the current study, we investigated the relationship of erythrocyte omega-3 FAs with plasma immune markers in a clinical high risk for psychosis (CHR) sample. In addition, a mediation analysis was performed to examine whether previously reported associations between omega-3 FAs and clinical outcomes were mediated via plasma immune markers. Clinical outcomes for CHR participants in the NEURAPRO clinical trial were measured using the Brief Psychiatric Rating Scale (BPRS), Schedule for the Scale of Assessment of Negative Symptoms (SANS) and Social and Occupational Functioning Assessment Scale (SOFAS) scales. The erythrocyte omega-3 index [eicosapentaenoic acid (EPA) + docosahexaenoic acid (DHA)] and plasma concentrations of inflammatory markers were quantified at baseline (n = 268) and 6 month follow-up (n = 146) by gas chromatography and multiplex immunoassay, respectively. In linear regression models, the baseline plasma concentrations of Interleukin (IL)-15, Intercellular adhesion molecule (ICAM)-1 and Vascular cell adhesion molecule (VCAM)-1 were negatively associated with baseline omega-3 index. In addition, 6-month change in IL-12p40 and TNF-α showed a negative association with change in omega-3 index. In longitudinal analyses, the baseline and 6 month change in omega-3 index was negatively associated with VCAM-1 and TNF-α respectively at follow-up. Mediation analyses provided little evidence for mediating effects of plasma immune markers on the relationship between omega-3 FAs and clinical outcomes (psychotic symptoms and functioning) in CHR participants. Our results indicate a predominantly anti-inflammatory relationship of omega-3 FAs on plasma inflammatory status in CHR individuals, but this did not appear to convey clinical benefits at 6 month and 12 month follow-up. Both immune and non-immune biological effects of omega-3 FAs would be resourceful in understanding the clinical benefits of omega-3 FAs in CHR papulation.
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Affiliation(s)
- Subash Raj Susai
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
| | - David Mongan
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Colm Healy
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Mary Cannon
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - Barnaby Nelson
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Connie Markulev
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Miriam R Schäfer
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Maximus Berger
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Nilufar Mossaheb
- Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria
| | - Monika Schlögelhofer
- BioPsyC-Biopsychosocial Corporation - Non-Profit Association for Research Funding, Austria; Department of Child and Adolescent Psychiatry, Medical University Vienna, Austria
| | - Stefan Smesny
- Department of Psychiatry and Psychotherapy, Jena University Hospital, Jena, Germany
| | - Ian B Hickie
- Brain and Mind Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Gregor E Berger
- Child and Adolescent Psychiatric Service of the Canton of Zurich, Zürich, Switzerland
| | - Eric Y H Chen
- Department of Psychiatry, University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Lieuwe de Haan
- Department of Psychiatry, Academic Medical Center, Amsterdam, the Netherlands
| | - Dorien H Nieman
- Department of Psychiatry, Academic Medical Center, Amsterdam, the Netherlands
| | - Merete Nordentoft
- Mental Health Center Copenhagen, Department of Clinical Medicine, Copenhagen University Hospital, Denmark
| | | | - Swapna Verma
- Institute of Mental Health, Singapore, Singapore
| | - Andrew Thompson
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Alison Ruth Yung
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia; Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Geelong, Australia; School of Health Sciences, University of Manchester, UK
| | - Patrick D McGorry
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia
| | - Melanie Föcking
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland
| | - David Cotter
- Department of Psychiatry, RCSI University of Medicine and Health Sciences, Dublin, Ireland.
| | - G Paul Amminger
- Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia; Orygen, 35 Poplar Rd, Parkville 3052, Australia; Department of Psychiatry and Psychotherapy, Medical University of Vienna, Vienna, Austria
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12
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Dilworth L, Facey A, Omoruyi F. Diabetes Mellitus and Its Metabolic Complications: The Role of Adipose Tissues. Int J Mol Sci 2021; 22:ijms22147644. [PMID: 34299261 PMCID: PMC8305176 DOI: 10.3390/ijms22147644] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 12/14/2022] Open
Abstract
Many approaches have been used in the effective management of type 2 diabetes mellitus. A recent paradigm shift has focused on the role of adipose tissues in the development and treatment of the disease. Brown adipose tissues (BAT) and white adipose tissues (WAT) are the two main types of adipose tissues with beige subsets more recently identified. They play key roles in communication and insulin sensitivity. However, WAT has been shown to contribute significantly to endocrine function. WAT produces hormones and cytokines, collectively called adipocytokines, such as leptin and adiponectin. These adipocytokines have been proven to vary in conditions, such as metabolic dysfunction, type 2 diabetes, or inflammation. The regulation of fat storage, energy metabolism, satiety, and insulin release are all features of adipose tissues. As such, they are indicators that may provide insights on the development of metabolic dysfunction or type 2 diabetes and can be considered routes for therapeutic considerations. The essential roles of adipocytokines vis-a-vis satiety, appetite, regulation of fat storage and energy, glucose tolerance, and insulin release, solidifies adipose tissue role in the development and pathogenesis of diabetes mellitus and the complications associated with the disease.
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Affiliation(s)
- Lowell Dilworth
- Department of Pathology, Mona Campus, University of the West Indies, Kingston 7, Jamaica;
| | - Aldeam Facey
- Mona Academy of Sport, Mona Campus, University of the West Indies, Kingston 7, Jamaica;
| | - Felix Omoruyi
- Department of Life Sciences, Texas A&M University, Corpus Christi, TX 78412, USA
- Correspondence:
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13
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Lewis ME, Volpert-Esmond HI, Deen JF, Modde E, Warne D. Stress and Cardiometabolic Disease Risk for Indigenous Populations throughout the Lifespan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:1821. [PMID: 33668461 PMCID: PMC7918141 DOI: 10.3390/ijerph18041821] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Indigenous people experience the greatest cardiometabolic disease disparity in the Unites States, yet high cardiometabolic disease risk factors do not fully explain the extent of the cardiometabolic disease disparity for Indigenous people. Stress, trauma, and racism occur at high rates within Indigenous communities and have not been well explored as significant contributors to cardiometabolic disease disparities despite emerging literature, and therefore will be described here. METHODS This descriptive study explores the relationship between cardiometabolic disease risks and Indigenous-specific stressors (e.g., early childhood stress and trauma, adulthood stress and trauma, and historical and intergenerational trauma) using current literature. Indigenous-specific protective factors against cardiometabolic disease are also reviewed. RESULTS Increasing research indicates that there is a relationship between Indigenous-specific stressful and traumatic life experiences and increased cardiometabolic disease risk. Mental health and psychophysiology play an important role in this relationship. Effective interventions to reduce cardiometabolic disease risk in Indigenous communities focus on ameliorating the negative effects of these stressors through the use of culturally specific health behaviors and activities. CONCLUSIONS There is increasing evidence that cultural connection and enculturation are protective factors for cardiometabolic disease, and may be galvanized through Indigenous-led training, research, and policy change.
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Affiliation(s)
- Melissa E. Lewis
- Department of Family and Community Medicine, School of Medicine, University of Missouri, Columbia, MO 65212, USA;
| | | | - Jason F. Deen
- Department of Pediatrics, University of Washington, Seattle, WA 98195, USA;
| | - Elizabeth Modde
- Department of Family and Community Medicine, School of Medicine, University of Missouri, Columbia, MO 65212, USA;
| | - Donald Warne
- Family & Community Medicine Department, University of North Dakota, Grand Forks, ND 58202, USA;
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14
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Nash SH, Day G, Hiratsuka VY, Beans J, Redwood D, Holck P, Howard BV, Umans J, Koller KR. Ten-year weight gain is not associated with multiple cardiometabolic measures in Alaska EARTH study participants. Nutr Metab Cardiovasc Dis 2021; 31:403-410. [PMID: 33127251 PMCID: PMC7887000 DOI: 10.1016/j.numecd.2020.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 09/01/2020] [Accepted: 09/17/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND AIMS Alaska Native (AN) traditional lifestyle may be protective against chronic disease risk. Weight gain in adulthood has been linked to increases in chronic disease risk among other populations; yet, its impact among Alaska Native people has never been evaluated. We aimed to evaluate changes in obesity-related metrics over time, and determine associations of changes with cardiometabolic markers of chronic disease risk among AN people. METHODS AND RESULTS Study participants enrolled in the southcentral Alaska Education and Research Towards Health Study in 2004-2006 were invited to participate in a follow-up study conducted 2015-2017. Of the original 1320 participants, 388 completed follow-up health assessments consisting of multiple health surveys, anthropometric measurements, and cardiometabolic measures including blood sugars, blood lipids, and blood pressure. Differences in measurements between visits were determined and associations of weight change with cardiometabolic measures evaluated. Body mass index increased by 3.7 kg/m2 among men and 4.8 kg/m2 among women. Hip circumference (1.1 cm, p < 0.01) and waist circumference (0.7 cm, p < 0.01) increased among women; only waist circumference increased among men (1.6 cm, p < 0.01). Among men, there were no associations of weight change with cardiometabolic measures. Among women, there was an inverse association between weight gain and high-density lipoprotein cholesterol only (0.17 mg/dL (CI: -3.1, -0.03), p = 0.02). CONCLUSIONS While weight increase over a 10-year period was not associated with substantive changes in cardiometabolic measures among AN men, there was a decrease in high density lipid cholesterol associated with weight gain among AN women.
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Affiliation(s)
- Sarah H Nash
- Alaska Native Epidemiology Center, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA.
| | - Gretchen Day
- Clinical and Research Services, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | | | - Julie Beans
- Clinical and Research Services, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Diana Redwood
- Alaska Native Epidemiology Center, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Peter Holck
- Clinical and Research Services, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - Barbara V Howard
- Medstar Health Research Institute, Hyattsville, MD, USA; Georgetown/Howard Universities Center for Clinical and Translational Research, Washington, DC, USA
| | - Jason Umans
- Medstar Health Research Institute, Hyattsville, MD, USA; Georgetown/Howard Universities Center for Clinical and Translational Research, Washington, DC, USA
| | - Kathryn R Koller
- Clinical and Research Services, Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
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15
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Tun S, Spainhower CJ, Cottrill CL, Lakhani HV, Pillai SS, Dilip A, Chaudhry H, Shapiro JI, Sodhi K. Therapeutic Efficacy of Antioxidants in Ameliorating Obesity Phenotype and Associated Comorbidities. Front Pharmacol 2020; 11:1234. [PMID: 32903449 PMCID: PMC7438597 DOI: 10.3389/fphar.2020.01234] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 07/28/2020] [Indexed: 12/13/2022] Open
Abstract
Obesity has been a worldwide epidemic for decades. Despite the abundant increase in knowledge regarding the etiology and pathogenesis of obesity, the prevalence continues to rise with estimates predicting considerably higher numbers by the year 2030. Obesity is characterized by an abnormal lipid accumulation, however, the physiological consequences of obesity are far more concerning. The development of the obesity phenotype constitutes dramatic alterations in adipocytes, along with several other cellular mechanisms which causes substantial increase in systemic oxidative stress mediated by reactive oxygen species (ROS). These alterations promote a chronic state of inflammation in the body caused by the redox imbalance. Together, the systemic oxidative stress and chronic inflammation plays a vital role in maintaining the obese state and exacerbating onset of cardiovascular complications, Type II diabetes mellitus, dyslipidemia, non-alcoholic steatohepatitis, and other conditions where obesity has been linked as a significant risk factor. Because of the apparent role of oxidative stress in the pathogenesis of obesity, there has been a growing interest in attenuating the pro-oxidant state in obesity. Hence, this review aims to highlight the therapeutic role of antioxidants, agents that negate pro-oxidant state of cells, in ameliorating obesity and associated comorbidities. More specifically, this review will explore how various antioxidants target unique and diverse pathways to exhibit an antioxidant defense mechanism.
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Affiliation(s)
- Steven Tun
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Caleb James Spainhower
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Cameron Lee Cottrill
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Hari Vishal Lakhani
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Sneha S Pillai
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Anum Dilip
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Hibba Chaudhry
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Joseph I Shapiro
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
| | - Komal Sodhi
- Departments of Medicine, Surgery and Biomedical Sciences, Marshall University Joan C. Edwards School of Medicine, Huntington, WV, United States
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16
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de Groot RHM, Meyer BJ. ISSFAL Official Statement Number 6: The importance of measuring blood omega-3 long chain polyunsaturated fatty acid levels in research. Prostaglandins Leukot Essent Fatty Acids 2020; 157:102029. [PMID: 31740196 DOI: 10.1016/j.plefa.2019.102029] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/05/2019] [Indexed: 11/21/2022]
Abstract
A statement on measuring blood omega-3 long chain polyunsaturated fatty acid levels was developed and edited based on input from ISSFAL members and accepted by vote of the ISSFAL Board of Directors. Summary of Statement: Omega-3 long chain polyunsaturated fatty acid (n-3 LCPUFA) levels at baseline and post-intervention should be assessed and reported in future research to evaluate the efficacy of n-3 LCPUFA supplementation: b ecause; 1. there are numerous factors that affect n-3 LCPUFA levels in humans as described in the systematic literature review [1]; 2. assessing intake of n-3 LCPUFA from the diet and/or supplements is not sufficient to accurately determine n-3 LCPUFA levels in humans; 3. some studies do not provide sufficient doses of n-3 LCPUFA to produce a significant impact on bloodstream/organ content and there is substantial variability in the uptake of n-3 LPCUFA into tissues between individuals. In secondary analyses, clinical trials should consider the influence of fatty acid status (baseline, endpoint and change from baseline to endpoint) on the outcome variables.
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Affiliation(s)
- Renate H M de Groot
- Faculty of Psychology and Educational Sciences, Welten Institute, Research Centre for Learning, Teaching and Technology, Open University of the Netherlands, Valkenburgerweg 177, 6419AT Heerlen, the Netherlands
| | - Barbara J Meyer
- School of Medicine, Lipid Research Centre, Molecular Horizons, University of Wollongong and Illawarra Health & Medical Research Institute, Northfields Avenue, Wollongong, NSW 2522, Australia.
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17
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Huang Y, Sun F, Tan H, Deng Y, Sun Z, Chen H, Li J, Chen D. DEHP and DINP Induce Tissue- and Gender-Specific Disturbances in Fatty Acid and Lipidomic Profiles in Neonatal Mice: A Comparative Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:12812-12822. [PMID: 31577137 DOI: 10.1021/acs.est.9b04369] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Di-isononyl phthalate (DINP) is considered one of the main industrial alternatives to di(2-ethylhexyl)phthalate (DEHP), a well-known chemical with various toxic effects including the disruption with lipid metabolism. However, the potential effects of DINP on lipid metabolism have rarely been investigated in mammals. Our study demonstrated that exposure of neonatal mice to DEHP and DINP at a daily dose of 0.048 or 4.8 mg/kg from postnatal day 0 (PND0) to PND21 caused nonmonotonic as well as tissue- and gender-specific alterations of total fatty acid (FA) compositions in plasma, heart, and adipose tissues. However, the patterns of disruption differed between DEHP- and DINP-treated groups. On the basis of targeted lipidomic analyses, we further identified gender-specific alterations of eight lipid classes in plasma following DEHP or DINP exposure. At the higher dose, DEHP induced decreases in total phosphatidylcholines and phosphatidylinositol (PI) in females and increases in phosphatidylethanolamines (PEs) and triglycerides in males. By contrast, DINP at the higher dose caused alterations of PEs, PIs, phosphatidylserines, and cholesterols exclusively in male mice, but no changes were observed in female pups. Although the most significant dysregulation of lipid metabolism was often observed for the higher dose, the lower one could also disrupt lipid profiles and sometimes its effects may even be more significant than those induced by the higher dose. Our study for the first time identified tissue- and gender-specific disruptions of FA compositions and lipidomic profiles in mice neonatally exposed to DINP. These findings question the suitability of DINP as a safe DEHP substitute and lay a solid foundation for further elucidation of its effects on lipid metabolism and underlying mechanisms.
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Affiliation(s)
- Yichao Huang
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Fengjiang Sun
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Hongli Tan
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Yongfeng Deng
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Zhiqiang Sun
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Hexia Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Jing Li
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
| | - Da Chen
- School of Environment and Guangdong Key Laboratory of Environmental Pollution and Health , Jinan University , Guangzhou 510632 , China
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18
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Bersamin A, Izumi BT, Nu J, O’brien DM, Paschall M. Strengthening adolescents' connection to their traditional food system improves diet quality in remote Alaska Native communities: results from the Neqa Elicarvigmun Pilot Study. Transl Behav Med 2019; 9:952-961. [PMID: 31570921 PMCID: PMC6937549 DOI: 10.1093/tbm/ibz087] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In remote Alaska Native communities, traditional foods are inextricably linked to health and food security. Degradation of the traditional food system over the past several decades has resulted in a shift in dietary patterns that have contributed to increased rates of chronic diseases and food insecurity among Alaska Native People. Interventions are needed to address this. Our objectives were to evaluate the preliminary efficacy of a school-based intervention-Neqa Elicarvigmun or the Fish-to-School Program-on diet quality, fish intake, and attitudes and beliefs around traditional foods (specifically fish) using a pre-post comparison group design with data collection occurring at three time points. Study participants were 76 middle and high school students in two remote Alaska Native communities (population <900) in southwestern Alaska. We used a participatory approach to design the school-based, multilevel intervention that included activities in the cafeteria, classroom, and community. Multilevel analyses showed that students in the experimental community showed significant improvements in diet quality compared to the comparison community (Beta = 4.57; p < .05). Fish intake, measured using the stable nitrogen isotope ratio of hair, a validated biomarker, also increased significantly in the experimental community (Beta = 0.16; p < .05). Leveraging the cultural and physical resources of the traditional food system for the Neqa Elicarvigmun program represents a strength-based approach that improves diet quality, increases adolescents' connection to their traditional culture, and by promoting the local food system supports food security. Embedding the program into the local culture may result in faster adoption and greater sustainability of the program.
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Affiliation(s)
- Andrea Bersamin
- Center for Alaska Native Health Research and Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, USA
| | - Betty T Izumi
- Oregon Health & Science University - Portland State University School of Public Health, Portland, USA
| | - Jennifer Nu
- Center for Alaska Native Health Research and Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, USA
| | - Diane M O’brien
- Center for Alaska Native Health Research and Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, USA
| | - Mallie Paschall
- Prevention Research Center, Pacific Institute for Research and Evaluation, Berkeley, CA, USA
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Ayisi Addo S, Nti C, Vuvor F, Adjimani J, Steiner-Asiedu M. Impact of Successful Weight Loss Maintenance on Serum Lipids and Glucose Concentrations of Previous Participants of a Weight Loss Programme in Accra, Ghana. J Nutr Metab 2019; 2019:4729040. [PMID: 31061735 PMCID: PMC6466963 DOI: 10.1155/2019/4729040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/18/2019] [Accepted: 03/04/2019] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND AND AIM There is a need to investigate the long-term impact of successful weight loss maintenance on blood lipids and glucose concentrations in populations within Africa, where obesity and cardiovascular disease (CVD) rates are increasingly becoming a public health threat. The aim of this study was to compare the serum lipid and glucose concentrations of successful and unsuccessful weight loss maintainers who previously participated in the Nutriline Weight Loss Programme (NWLP) in Accra, Ghana. METHODS 112 participants were randomly selected to participate in this cross-sectional study. Baseline and end of weight loss programme anthropometric and programmatic data were accessed via the NWLP archival database. On follow-up, anthropometric data, physical activity, dietary behaviour, serum lipid, and glucose indices were taken. Successful weight loss maintainers (SWLM) were defined as those achieving at least 5% weight loss below the baseline weight at follow-up, otherwise unsuccessful (UWLM). RESULTS The adjusted serum total cholesterol (TC) concentration was significantly lower for SWLM (5.17 ± 0.99 mmol/L) compared to UWLM (5.59 ± 1.06 mmol/L). Serum low-density lipoprotein (LDL), high-density lipoprotein (HDL), fasting blood glucose (FBG), and glycosylated haemoglobin (HbA1c) concentrations for SWLM versus UWLM did not differ significantly and were as follows: 3.58 ± 0.92 mmol/L versus 3.87 ± 0.99 mmol/L, 1.22 ± 0.38 mmol/L versus 1.17 ± 0.32 mmol/L, 4.48 ± 0.72 mmol/L versus 4.73 ± 1.00 mmol/L, and 5.52 ± 0.39% versus 5.59 ± 0.59%, respectively. Triglyceride (TG) concentration was significantly (P < 0.001) lower for SWLM (0.79 ± 0.28 mmol/L) compared to UWLM (1.17 ± 0.51 mmol/L). After adjusting for covariates, it was no longer significant. Additionally, there was no significant association between weight loss maintenance success and having a normal status for selected lipids and glucose parameters. CONCLUSION SWLM had a significantly lower serum TC compared to UWLM. In addition, a greater proportion of SWLM had normal values for TC, TG, HbA1c, and LDL out of the six parameters measured although not statistically significant.
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Affiliation(s)
- Sandra Ayisi Addo
- Department of Nutrition and Food Science, University of Ghana, Legon-Accra, Ghana
| | - Christiana Nti
- Department of Family and Consumer Sciences, University of Ghana, Legon-Accra, Ghana
| | - Frederick Vuvor
- Department of Nutrition and Food Science, University of Ghana, Legon-Accra, Ghana
| | - Jonathan Adjimani
- Department of Biochemistry, Cell and Molecular Biology, University of Ghana, Legon-Accra, Ghana
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Abstract
Numerous health benefits are attributed to the n-3 long-chain PUFA (n-3 LCPUFA); EPA and DHA. A systematic literature review was conducted to investigate factors, other than diet, that are associated with the n-3 LCPUFA levels. The inclusion criteria were papers written in English, carried out in adult non-pregnant humans, n-3 LCPUFA measured in blood or tissue, data from cross-sectional studies, or baseline data from intervention studies. The search revealed 5076 unique articles of which seventy were included in the qualitative synthesis. Three main groups of factors potentially associated with n-3 LCPUFA levels were identified: (1) unmodifiable factors (sex, genetics, age), (2) modifiable factors (body size, physical activity, alcohol, smoking) and (3) bioavailability factors (chemically bound form of supplements, krill oil v. fish oil, and conversion of plant-derived α-linolenic acid (ALA) to n-3 LCPUFA). Results showed that factors positively associated with n-3 LCPUFA levels were age, female sex (women younger than 50 years), wine consumption and the TAG form. Factors negatively associated with n-3 LCPUFA levels were genetics, BMI (if erythrocyte EPA and DHA levels are <5·6 %) and smoking. The evidence for girth, physical activity and krill oil v. fish oil associated with n-3 LCPUFA levels is inconclusive. There is also evidence that higher ALA consumption leads to increased levels of EPA but not DHA. In conclusion, sex, age, BMI, alcohol consumption, smoking and the form of n-3 LCPUFA are all factors that need to be taken into account in n-3 LCPUFA research.
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21
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Ryman TK, Boyer BB, Hopkins SE, Philip J, Thompson B, Beresford SAA, Thummel KE, Austin MA. Association between iq'mik smokeless tobacco use and cardiometabolic risk profile among Yup'ik Alaska Native people. ETHNICITY & HEALTH 2018; 23:488-502. [PMID: 28116909 PMCID: PMC5796859 DOI: 10.1080/13557858.2017.1280136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE The traditional lifestyle of Yup'ik Alaska Native people, including a diet abundant in marine-based foods and physical activity, may be cardio-protective. However, iq'mik, a traditional form of smokeless tobacco used by >50% of Yup'ik adults, could increase cardiometabolic (CM) risk. Our objective was to characterize the associations between iq'mik use and biomarkers of CM status (low-density lipoprotein cholesterol [LDL-C], high-density lipoprotein cholesterol [HDL-C], triglycerides [TG], systolic blood pressure [SBP] and diastolic blood pressure [DBP], glycated hemoglobin [HbA1c], fasting blood glucose [FBG], waist circumference [WC], and body mass index [BMI]). DESIGN We assessed these associations using data from a cross-sectional sample of Yup'ik adults (n = 874). Current iq'mik use, demographic, and lifestyle data were collected through interviews. Fasting blood samples were collected to measure LDL-C, HDL-C, TG, HbA1c, and FBG. SBP, DBP, WC, and BMI were obtained by physical examination. We characterized the association between current iq'mik use and continuous biomarkers of CM status using multiple approaches, including adjustment for measures of Yup'ik lifestyle and a propensity score. RESULTS Based on either adjustment method, current iq'mik use was significantly and positively associated with at least 5% higher HDL-C, and significantly associated but in an inverse direction with multiple biomarkers of CM status including 7% lower TG, 0.05% lower HbA1c, 2% lower FBG, 4% lower WC, and 4% lower BMI. Observed associations for LDL-C, SBP, and DBP varied by adjustment method. CONCLUSIONS This inverse association between iq'mik use and cardiometabolic risk status has not been previously reported. Additional research is needed to replicate these findings and explore physiological mechanisms and/or confounding factors.
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Affiliation(s)
- Tove K Ryman
- a Department of Epidemiology, School of Public Health , University of Washington , Seattle , WA , USA
| | - Bert B Boyer
- b Center for Alaska Native Health Research , University of Alaska Fairbanks , Fairbanks , AK , USA
| | - Scarlett E Hopkins
- b Center for Alaska Native Health Research , University of Alaska Fairbanks , Fairbanks , AK , USA
| | - Jacques Philip
- b Center for Alaska Native Health Research , University of Alaska Fairbanks , Fairbanks , AK , USA
| | - Beti Thompson
- c Department of Health Services , University of Washington , Seattle , WA , USA
| | - Shirley A A Beresford
- a Department of Epidemiology, School of Public Health , University of Washington , Seattle , WA , USA
| | - Kenneth E Thummel
- d Department of Pharmaceutics , University of Washington , Seattle , WA , USA
| | - Melissa A Austin
- a Department of Epidemiology, School of Public Health , University of Washington , Seattle , WA , USA
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22
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de Schweinitz PA, Wojcicki JM. First Nations Approaches to Childhood Obesity: Healthy Lifestyles in Canada Compared with Alternatives for Alaska Native Communities. CHILDREN-BASEL 2017; 4:children4050038. [PMID: 28492517 PMCID: PMC5447996 DOI: 10.3390/children4050038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 05/04/2017] [Accepted: 05/04/2017] [Indexed: 11/16/2022]
Abstract
Alaska Native and American Indian children have among the highest prevalence of obesity in the United States. Canadian Aboriginal populations including First Nations also have high rates of obesity but obesity rates among children are noticeably lower. We highlight some of the important differences between American and Canadian approaches to healthy lifestyles and Aboriginal/Native health, including diet and physical activity, which may in part explain the differences in obesity prevalence. Specifically, the Canadian government provides a food subsidy program to bring perishable fruits and vegetable to remote, rural Canadian areas and secondly supports the use of traditional foods and harvesting/gathering through a number of government supported programs. Lastly, there may be a better sense of community and overall life satisfaction for Aboriginals compared with Alaska Natives, in part because of the incorporation of healthcare and other services within the larger overall community, as opposed to separate services as is the case for Alaska Natives. This perspective provides insight into some of these potential differences.
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Affiliation(s)
| | - Janet M Wojcicki
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA 94158, USA.
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23
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Au NT, Reyes M, Boyer BB, Hopkins SE, Black J, O’Brien D, Fohner AE, Yracheta J, Thornton T, Austin MA, Burke W, Thummel KE, Rettie AE. Dietary and genetic influences on hemostasis in a Yup'ik Alaska Native population. PLoS One 2017; 12:e0173616. [PMID: 28376131 PMCID: PMC5380313 DOI: 10.1371/journal.pone.0173616] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 02/23/2017] [Indexed: 11/23/2022] Open
Abstract
Fish and marine animals are important components of the subsistence diet of Alaska Native people, resulting in a high ω3 PUFA intake. The historical record for circumpolar populations highlights a tendency for facile bleeding, possibly related to ω3 PUFA effects on platelet activation and/or vitamin K-dependent clotting factors. To evaluate these two scenarios in Yup'ik people of southwestern Alaska, we examined the association between dietary ω3 PUFA intake and activities of clotting factor II, V, fibrinogen, PT, INR, PTT, and sP-selectin in 733 study participants, using the nitrogen isotope ratio of red blood cells as a biomarker of ω3 PUFA consumption. sP-selectin alone correlated strongly and inversely with ω3 PUFA consumption. Approximately 36% of study participants exhibited PIVKA-II values above the threshold of 2 ng/ml, indicative of low vitamin K status. To assess genetic influences on vitamin K status, study participants were genotyped for common vitamin K cycle polymorphisms in VKORC1, GGCX and CYP4F2. Only CYP4F2*3 associated significantly with vitamin K status, for both acute (plasma vitamin K) and long-term (PIVKA-II) measures. These findings suggest: (i) a primary association of ω3 PUFAs on platelet activation, as opposed to vitamin K-dependent clotting factor activity, (ii) that reduced CYP4F2 enzyme activity associates with vitamin K status. We conclude that high ω3 PUFA intake promotes an anti-platelet effect and speculate that the high frequency of the CYP4F2*3 allele in Yup'ik people (~45%) evolved in response to a need to conserve body stores of vitamin K due to environmental limitations on its availability.
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Affiliation(s)
- Nicholas T. Au
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington, United States of America
| | - Morayma Reyes
- Department of Laboratory Medicine, University of Washington, Seattle, Washington, United States of America
| | - Bert B. Boyer
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Scarlett E. Hopkins
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Jynene Black
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Diane O’Brien
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, Alaska, United States of America
| | - Alison E. Fohner
- Public Health Genetics, University of Washington, Seattle, Washington, United States of America
| | - Joe Yracheta
- Department of Pharmaceutics, University of Washington, Seattle, Washington, United States of America
| | - Timothy Thornton
- Department of Biostatistics, University of Washington, Seattle, Washington, United States of America
| | - Melissa A. Austin
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Wylie Burke
- Department of Medical Ethics, University of Washington, Seattle, Washington, United States of America
| | - Kenneth E. Thummel
- Department of Pharmaceutics, University of Washington, Seattle, Washington, United States of America
| | - Allan E. Rettie
- Department of Medicinal Chemistry, University of Washington, Seattle, Washington, United States of America
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24
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Huang CW, Chien YS, Chen YJ, Ajuwon KM, Mersmann HM, Ding ST. Role of n-3 Polyunsaturated Fatty Acids in Ameliorating the Obesity-Induced Metabolic Syndrome in Animal Models and Humans. Int J Mol Sci 2016; 17:ijms17101689. [PMID: 27735847 PMCID: PMC5085721 DOI: 10.3390/ijms17101689] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 09/05/2016] [Accepted: 09/27/2016] [Indexed: 02/07/2023] Open
Abstract
The incidence of obesity and its comorbidities, such as insulin resistance and type II diabetes, are increasing dramatically, perhaps caused by the change in the fatty acid composition of common human diets. Adipose tissue plays a role as the major energy reservoir in the body. An excess of adipose mass accumulation caused by chronic positive energy balance results in obesity. The n-3 polyunsaturated fatty acids (n-3 PUFA), DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid) exert numerous beneficial effects to maintain physiological homeostasis. In the current review, the physiology of n-3 PUFA effects in the body is delineated from studies conducted in both human and animal experiments. Although mechanistic studies in human are limited, numerous studies conducted in animals and models in vitro provide potential molecular mechanisms of the effects of these fatty acids. Three aspects of n-3 PUFA in adipocyte regulation are discussed: (1) lipid metabolism, including adipocyte differentiation, lipolysis and lipogenesis; (2) energy expenditure, such as mitochondrial and peroxisomal fatty acid β-oxidation; and (3) inflammation, including adipokines and specialized pro-resolving lipid mediators. Additionally, the mechanisms by which n-3 PUFA regulate gene expression are highlighted. The beneficial effects of n-3 PUFA may help to reduce the incidence of obesity and its comorbidities.
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Affiliation(s)
- Chao-Wei Huang
- Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan.
| | - Yi-Shan Chien
- Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan.
| | - Yu-Jen Chen
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan.
| | - Kolapo M Ajuwon
- Department of Animal Science, Purdue University, West Lafayette, IN 47907-2054, USA.
| | - Harry M Mersmann
- Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan.
| | - Shih-Torng Ding
- Department of Animal Science and Technology, National Taiwan University, Taipei 106, Taiwan.
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan.
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25
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Lemas DJ, Klimentidis YC, Aslibekyan S, Wiener HW, O'Brien DM, Hopkins SE, Stanhope KL, Havel PJ, Allison DB, Fernandez JR, Tiwari HK, Boyer BB. Polymorphisms in stearoyl coa desaturase and sterol regulatory element binding protein interact with N-3 polyunsaturated fatty acid intake to modify associations with anthropometric variables and metabolic phenotypes in Yup'ik people. Mol Nutr Food Res 2016; 60:2642-2653. [PMID: 27467133 DOI: 10.1002/mnfr.201600170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 07/09/2016] [Accepted: 07/21/2016] [Indexed: 11/08/2022]
Abstract
SCOPE n-3 polyunsaturated fatty acid (n-3 PUFA) intake is associated with protection from obesity; however, the mechanisms of protection remain poorly characterized. The stearoyl CoA desaturase (SCD), insulin-sensitive glucose transporter (SLC2A4), and sterol regulatory element binding protein (SREBF1) genes are transcriptionally regulated by n-3 PUFA intake and harbor polymorphisms associated with obesity. The present study investigated how consumption of n-3 PUFA modifies associations between SCD, SLC2A4, and SREBF1 polymorphisms and anthropometric variables and metabolic phenotypes. MATERIALS AND METHODS Anthropometric variables and metabolic phenotypes were measured in a cross-sectional sample of Yup'ik individuals (n = 1135) and 33 polymorphisms were tested for main effects and interactions using linear models that account for familial correlations. n-3 PUFA intake was estimated using red blood cell nitrogen stable isotope ratios. SCD polymorphisms were associated with ApoA1 concentration and n-3 PUFA interactions with SCD polymorphisms were associated with reduced fasting cholesterol levels and waist-to-hip ratio. SLC2A4 polymorphisms were associated with hip circumference, high-density lipoprotein and ApoA1 concentrations. SREBF1 polymorphisms were associated with low-density lipoprotein and HOMA-IR and n-3 PUFA interactions were associated with reduced fasting insulin and HOMA-IR levels. CONCLUSION The results suggest that an individual's genotype may interact with dietary n-3 PUFAs in ways that are associated with protection from obesity-related diseases in Yup'ik people.
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Affiliation(s)
- Dominick J Lemas
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA.,Department of Pediatrics, Section of Neonatology, University of Colorado Denver, Aurora, CO, USA
| | - Yann C Klimentidis
- Department of Epidemiology and Biostatistics, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - Stella Aslibekyan
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Howard W Wiener
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Diane M O'Brien
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Scarlett E Hopkins
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Kimber L Stanhope
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA.,Department of Nutrition, University of California, Davis, CA, USA
| | - Peter J Havel
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, CA, USA.,Department of Nutrition, University of California, Davis, CA, USA
| | - David B Allison
- Department of Biostatistics, Section on Statistical Genetics, University of Alabama at Birmingham, Birmingham, AL, USA.,Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA.,Office of Energetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jose R Fernandez
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL, USA.,Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Hemant K Tiwari
- Department of Biostatistics, Section on Statistical Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Bert B Boyer
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK, USA
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Gessner BD, Wood T, Johnson MA, Richards CS, Koeller DM. Evidence for an association between infant mortality and homozygosity for the arctic variant of carnitine palmitoyltransferase 1A. Genet Med 2016; 18:933-9. [PMID: 26820065 PMCID: PMC4965343 DOI: 10.1038/gim.2015.197] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 11/17/2015] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Infant mortality in Alaska is highest among Alaska Native people from western/northern Alaska, a population with a high prevalence of a genetic variant (c.1436C>T; the arctic variant) of carnitine palmitoyltransferase 1A (CPT1A). METHODS We performed an unmatched case-control study to determine the relationship between the arctic variant and infant mortality. The cases were 110 Alaska Native infant deaths from 2006 to 2010 and the controls were 395 Alaska Native births from the same time period. In addition to the overall analysis, we conducted two subanalyses, one limited to subjects from western/northern Alaska and one limited to infants heterozygous or homozygous for the arctic variant. RESULTS Among western/northern Alaska residents, 66% of cases and 61% of controls were homozygous (adjusted odds ratio (aOR): 2.5; 95% confidence interval (CI): 1.3, 5.0). Among homozygous or heterozygous infants, 58% of cases and 44% of controls were homozygous (aOR: 2.3; 95% CI: 1.3, 4.0). Deaths associated with infection were more likely to be homozygous (OR: 2.9; 95% CI: 1.0-8.0). Homozygosity was strongly associated with a premorbid history of pneumonia, sepsis, or meningitis. CONCLUSION Homozygosity for the arctic variant is associated with increased risk of infant mortality, which may be mediated in part by an increase in infectious disease risk. Further studies are needed to determine whether the association we report represents a causal association between the CPT1A arctic variant and infectious disease-specific mortality.Genet Med 18 9, 933-939.
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Affiliation(s)
- Bradford D Gessner
- Alaska Division of Public Health, Anchorage, Alaska, USA
- Present address: EpiVac Consulting, Anchorage, Alaska, USA
| | - Thalia Wood
- Alaska Division of Public Health, Anchorage, Alaska, USA
- Present address: EpiVac Consulting, Anchorage, Alaska, USA
| | - Monique A Johnson
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon, USA
| | - Carolyn Sue Richards
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon, USA
| | - David M Koeller
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, Oregon, USA
- Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
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27
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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: 333] [Impact Index Per Article: 41.6] [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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28
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Ryman TK, Boyer BB, Hopkins S, Philip J, Beresford SAA, Thompson B, Heagerty PJ, Pomeroy JJ, Thummel KE, Austin MA. Associations between diet and cardiometabolic risk among Yup'ik Alaska Native people using food frequency questionnaire dietary patterns. Nutr Metab Cardiovasc Dis 2015; 25:1140-1145. [PMID: 26607703 PMCID: PMC4684467 DOI: 10.1016/j.numecd.2015.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 08/09/2015] [Accepted: 08/10/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND AIMS In previous analyses, we identified three dietary patterns from food frequency questionnaire data among a sample of Yup'ik Alaska Native people living in Southwest Alaska: a "subsistence foods" dietary pattern and two market-based dietary patterns "processed foods" and "fruits and vegetables". In this analysis, we aimed to characterize the association between the dietary patterns and cardiometabolic (CM) risk factors (lipids, blood pressure, glucose, adiposity). METHODS AND RESULTS We used multilevel linear regression to estimate the mean of each CM risk factor, comparing participants in the 4th to the 1st quartile of each dietary pattern (n = 637). Models were adjusted for age, sex, past smoking, current smoking, and physical activity. Mean log triglyceride levels were significantly higher among participants in the 4th compared to the 1st quartile of the processed foods dietary pattern (β = 0.11). Mean HbA1c percent was significantly lower (β = -0.08) and mean diastolic blood pressure (DBP) mm Hg was significantly higher (β = 2.87) among participants in the 4th compared to the 1st quartile of the fruits and vegetables dietary pattern. Finally, mean log triglyceride levels and mean DBP mm Hg were significantly lower among participants in the 4th compared to the 1st quartile of the subsistence foods dietary pattern (β = -0.10 and β = -3.99 respectively). CONCLUSIONS We found increased CM risk, as reflected by increased triglycerides, associated with eating a greater frequency of processed foods, and reduced CM risk, as reflected by lower triglycerides and DBP, associated with eating a greater frequency of subsistence foods.
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Affiliation(s)
- T K Ryman
- University of Washington, Seattle, WA 98195, USA
| | - B B Boyer
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - S Hopkins
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - J Philip
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | | | - B Thompson
- University of Washington, Seattle, WA 98195, USA
| | - P J Heagerty
- University of Washington, Seattle, WA 98195, USA
| | - J J Pomeroy
- Marshfield Clinic Research Foundation, Marshfield, WI 54449, USA
| | - K E Thummel
- University of Washington, Seattle, WA 98195, USA
| | - M A Austin
- University of Washington, Seattle, WA 98195, USA.
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29
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Hopkins SE, Austin MA, Metzger JS, Koller KR, Umans JG, Kaufmann C, Wolfe AW, Howard BV, Boyer BB. Sex differences in obesity prevalence and cardiometabolic factors among Western Alaska Native people. Nutr Metab Cardiovasc Dis 2015; 25:312-8. [PMID: 25467216 PMCID: PMC4355237 DOI: 10.1016/j.numecd.2014.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/21/2014] [Accepted: 10/22/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND AND AIMS Obesity is associated with increased risks of cardiovascular disease, type 2 diabetes, and other chronic diseases. Prevalence estimates for metabolic disorders are well documented in many populations, but Alaska Native groups are understudied. The Western Alaska Tribal Collaborative for Health Study combines data from three Alaska Native study cohorts to assess differences in obesity prevalence and associations with cardiometabolic risk factors by sex. METHODS AND RESULTS Analyses were based upon a sample of 3985 adult Yup'ik and Inupiat participants with a mean age of 40 years. Prevalence of obesity and metabolic risk factors was assessed according to nationally recognized guidelines. Regression analysis was used to evaluate the association between obesity and cardiometabolic risk factors, including lipids, blood pressure and glucose. The prevalence of obesity (BMI ≥ 30) was significantly higher in women (40%) than men (20%). Only 18.6% of men had a waist circumference (WC) > 102 cm, while 58% of women had a WC > 88 cm (p < 0.001). Women had higher mean HDL-C and triglyceride levels compared to men, while systolic and diastolic blood pressure, LDL-C, and glucose means were higher in men than in women. In multivariate analyses, BMI and WC were significantly associated with all of the cardiometabolic risk factors, although these associations were more pronounced in men than women. CONCLUSION The high prevalence of obesity and central adiposity among AN women is an important public health concern. Differences in associations between obesity and cardiometabolic risk factors by sex warrants further investigation to develop effective intervention programs.
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Affiliation(s)
- S E Hopkins
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA.
| | - M A Austin
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - J S Metzger
- Center for Behavioral Health Research and Services, University of Alaska Anchorage, Anchorage, AK, USA
| | - K R Koller
- Division of Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - J G Umans
- MedStar Health Research Institute, Hyattsville, MD, USA; Center for Clinical and Translational Science, Georgetown-Howard Universities, Washington, DC, USA
| | - C Kaufmann
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - A W Wolfe
- Division of Community Health Services, Alaska Native Tribal Health Consortium, Anchorage, AK, USA
| | - B V Howard
- MedStar Health Research Institute, Hyattsville, MD, USA; Center for Clinical and Translational Science, Georgetown-Howard Universities, Washington, DC, USA
| | - B B Boyer
- Center for Alaska Native Health Research, University of Alaska Fairbanks, Fairbanks, AK, USA
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Skulas-Ray AC. Omega-3 fatty acids and inflammation: a perspective on the challenges of evaluating efficacy in clinical research. Prostaglandins Other Lipid Mediat 2015; 116-117:104-11. [PMID: 25698680 DOI: 10.1016/j.prostaglandins.2015.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 02/03/2015] [Accepted: 02/09/2015] [Indexed: 12/31/2022]
Abstract
Chronic inflammation is a common underpinning of many diseases. There is a strong pre-clinical evidence base demonstrating the efficacy of omega-3 fatty acids for ameliorating inflammation and thereby reducing disease burden. Clinically, C-reactive protein (CRP) serves as both a reliable marker for monitoring inflammation and a modifiable endpoint for studies of anti-inflammatory pharmaceuticals. However, clinical omega-3 fatty acid supplementation trials have not replicated pre-clinical findings in terms of consistent CRP reductions. Methodological differences present numerous challenges in translating pre-clinical evidence to clinical results. It is crucial that future clinical nutrition research clearly distinguish between the reversal of established inflammation and preventing the development of inflammation. Future clinical studies evaluating the ability of omega-3 fatty acids to attenuate an excessive inflammatory response, may be advanced by employing new statistical approaches and utilizing models of induced inflammation, such as low-dose human endotoxemia.
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Affiliation(s)
- Ann C Skulas-Ray
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, United States.
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31
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Role of fish oil in human health and possible mechanism to reduce the inflammation. Inflammopharmacology 2015; 23:79-89. [PMID: 25676565 DOI: 10.1007/s10787-015-0228-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 01/20/2015] [Indexed: 12/31/2022]
Abstract
The roles of Omega-3 FAs are inflammation antagonists, while Omega-6 FAs are precursors for inflammation. The plant form of Omega-3 FAs is the short-chain α-linolenic acid, and the marine forms are the long-chain fatty acids: docosahexaenoic acid and eicosapentaenoic acid. Omega-3 FAs have unlimited usages, and they are considered as omnipotent since they may benefit heart health, improve brain function, reduce cancer risks and improve people's moods. Omega-3 FAs also have several important biological effects on a range of cellular functions that may decrease the onset of heart diseases and reduce mortality among patients with coronary heart disease, possibly by stabilizing the heart's rhythm and by reducing blood clotting. Some review studies have described the beneficial roles of Omega-3 FAs in cardiovascular diseases (CVDs), cancer, diabetes, and other conditions, including inflammation. Studies of the effect of Omega-3 FAs gathered from studies in diseased and healthy population. CVDs including atherosclerosis, coronary heart diseases, hypertension, and metabolic syndrome were the major fields of investigation. In studies of obesity, as the central obesity increased, the level of adipocyte synthesis of pro-inflammatory cytokines like tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) were increased and the level of anti-inflammatory adiponectin was decreased indicating a state of inflammation. The level of C reactive protein (CRP) synthesized from hepatocyte is increased by the influence of IL-6. CRP can be considered as a marker of systemic inflammation associated with increased risks of CVDs. In molecular studies, Omega-3 FAs have direct effects on reducing the inflammatory state by reducing IL-6, TNF-α, CRP and many other factors. While the appropriate dosage along with the administrative duration is not known, the scientific evidence-based recommendations for daily intake are not modified.
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Characterising the reproducibility and reliability of dietary patterns among Yup'ik Alaska Native people. Br J Nutr 2015; 113:634-43. [PMID: 25656871 DOI: 10.1017/s0007114514003596] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
FFQ data can be used to characterise dietary patterns for diet-disease association studies. In the present study, we evaluated three previously defined dietary patterns--'subsistence foods', market-based 'processed foods' and 'fruits and vegetables'--among a sample of Yup'ik people from Southwest Alaska. We tested the reproducibility and reliability of the dietary patterns, as well as the associations of these patterns with dietary biomarkers and participant characteristics. We analysed data from adult study participants who completed at least one FFQ with the Center for Alaska Native Health Research 9/2009-5/2013. To test the reproducibility of the dietary patterns, we conducted a confirmatory factor analysis (CFA) of a hypothesised model using eighteen food items to measure the dietary patterns (n 272). To test the reliability of the dietary patterns, we used the CFA to measure composite reliability (n 272) and intra-class correlation coefficients for test-retest reliability (n 113). Finally, to test the associations, we used linear regression (n 637). All factor loadings, except one, in CFA indicated acceptable correlations between foods and dietary patterns (r>0·40), and model-fit criteria were >0·90. Composite and test-retest reliability of the dietary patterns were, respectively, 0·56 and 0·34 for 'subsistence foods', 0·73 and 0·66 for 'processed foods', and 0·72 and 0·54 for 'fruits and vegetables'. In the multi-predictor analysis, the dietary patterns were significantly associated with dietary biomarkers, community location, age, sex and self-reported lifestyle. This analysis confirmed the reproducibility and reliability of the dietary patterns in the present study population. These dietary patterns can be used for future research and development of dietary interventions in this underserved population.
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Byrne S, Miller P, Waghiyi V, Buck CL, von Hippel FA, Carpenter DO. Persistent Organochlorine Pesticide Exposure Related to a Formerly Used Defense Site on St. Lawrence Island, Alaska: Data from Sentinel Fish and Human Sera. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:976-92. [PMID: 26262441 PMCID: PMC4547524 DOI: 10.1080/15287394.2015.1037412] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
St. Lawrence Island, Alaska, is the largest island in the Bering Sea, located 60 km from Siberia. The island is home to approximately 1600 St. Lawrence Island Yupik residents who live a subsistence way of life. Two formerly used defense sites (FUDS) exist on the island, one of which, Northeast Cape, has been the subject of a $123 million cleanup effort. Environmental monitoring demonstrates localized soil and watershed contamination with polychlorinated biphenyls (PCB), organochlorine (OC) pesticides, mercury, and arsenic. This study examined whether the Northeast Cape FUDS is a source of exposure to OC pesticides. In total, 71 serum samples were collected during site remediation from volunteers who represented three geographic regions of the island. In addition, ninespine stickleback (Pungitius pungitius) and Alaska blackfish (Dallia pectoralis) were collected from Northeast Cape after remediation to assess continuing presence of OC pesticides. Chlordane compounds, DDT compounds, mirex, and hexachlorobenzene (HCB) were the most prevalent and present at the highest concentrations in both fish tissues and human serum samples. After controlling for age and gender, activities near the Northeast Cape FUDS were associated with an increase in serum HCB as compared to residents of the farthest village from the site. Positive but nonsignificant relationships for sum-chlordane and sum-DDT were also found. Organochlorine concentrations in fish samples did not show clear geographic trends, but appear elevated compared to other sites in Alaska. Taken together, data suggest that contamination of the local environment at the Northeast Cape FUDS may increase exposure to select persistent OC pesticides.
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Affiliation(s)
- Samuel Byrne
- Institute for Health and the Environment, University at Albany, 5 University Place, Rm 217A, Rensselaer, NY, 12144 () ()
| | - Pamela Miller
- Alaska Community Action on Toxics, 505 West Northern Lights Blvd., Suite 205, Anchorage, AK 99503, USA () ()
| | - Viola Waghiyi
- Alaska Community Action on Toxics, 505 West Northern Lights Blvd., Suite 205, Anchorage, AK 99503, USA () ()
| | - C. Loren Buck
- Department of Biological Sciences, 3211 Providence Dr, University of Alaska, Anchorage, AK 99508, USA () ()
| | - Frank A. von Hippel
- Department of Biological Sciences, 3211 Providence Dr, University of Alaska, Anchorage, AK 99508, USA () ()
| | - David O. Carpenter
- Institute for Health and the Environment, University at Albany, 5 University Place, Rm 217A, Rensselaer, NY, 12144 () ()
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Dunbar BS, Bosire RV, Deckelbaum RJ. Omega 3 and omega 6 fatty acids in human and animal health: an African perspective. Mol Cell Endocrinol 2014; 398:69-77. [PMID: 25458696 DOI: 10.1016/j.mce.2014.10.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/10/2014] [Accepted: 10/12/2014] [Indexed: 01/10/2023]
Abstract
Lipids are essential for plant and animal development, growth and nutrition and play critical roles in health and reproduction. The dramatic increase in the human population has put increasing pressure on human food sources, especially of those sources of food which contain adequate levels of polyunsaturated fatty acids (PUFAs) and more importantly, sources of food which have favorable ratios of the n-3 (18-carbon, α-linolenic acid, ALA) to n-6 (18-carbon linoleic acid, LA) PUFAs. Recent studies have demonstrated the beneficial effects of the n-3 PUFAs in diets as well as potentially negative effects of excessive levels of n-6 PUFAs in diets. This review discusses these human health issues relating to changes in diets based on environmental and industrial changes as well as strategies in East Africa for improving lipid composition of food using indigenous sources.
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Affiliation(s)
- B S Dunbar
- Omega Farms Ltd., Ol Kokwe Island, Lake Baringo, Kenya; CEBIB, University of Nairobi, Nairobi, Kenya.
| | - R V Bosire
- Omega Farms Ltd., Ol Kokwe Island, Lake Baringo, Kenya
| | - R J Deckelbaum
- Institute of Human Nutrition, Columbia College of Physicians and Surgeons, New York, NY, USA
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Flock MR, Skulas-Ray AC, Harris WS, Gaugler TL, Fleming JA, Kris-Etherton PM. Effects of supplemental long-chain omega-3 fatty acids and erythrocyte membrane fatty acid content on circulating inflammatory markers in a randomized controlled trial of healthy adults. Prostaglandins Leukot Essent Fatty Acids 2014; 91:161-8. [PMID: 25091379 PMCID: PMC4156902 DOI: 10.1016/j.plefa.2014.07.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 07/04/2014] [Accepted: 07/07/2014] [Indexed: 02/08/2023]
Abstract
The long-chain omega-3 polyunsaturated (n-3 PUFA), eicosapentaenoic (EPA) and docosahexaenoic acid (DHA), may have anti-inflammatory effects. We evaluated the dose-response effect of EPA+DHA supplementation on circulating TNF-α, IL-6, and CRP and explored associations between red blood cell (RBC) membrane PUFA content and TNF-α, IL-6, and CRP. Young adults with low fish intake (n=116) received one of five doses (0, 300, 600, 900, or 1,800 mg/d EPA+DHA) for 5 months. There were no significant effects of supplemental EPA+DHA on IL-6 or CRP; however, there was a marginal treatment effect for TNF-α (p<0.08). At baseline, higher quartiles of RBC DHA were associated with lower TNF-α (p=0.001); higher quartiles of arachidonic acid were associated with higher TNF-α (p=0.005). EPA+DHA supplementation had no dose-response effect on TNF-α, IL-6, or CRP in healthy young adults; however, associations between inflammatory markers and RBC PUFA warrant further investigation.
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Affiliation(s)
- Michael R Flock
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, United States
| | - Ann C Skulas-Ray
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, United States.
| | - William S Harris
- Health Diagnostic Laboratory, Inc., Richmond, VA, United States; Department of Internal Medicine, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD, United States
| | - Trent L Gaugler
- Department of Mathematics, Lafayette College, Easton, PA 18042, United States
| | - Jennifer A Fleming
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, United States
| | - Penny M Kris-Etherton
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA, 16802, United States
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Association of red blood cell n-3 polyunsaturated fatty acids with plasma inflammatory biomarkers among the Quebec Cree population. Eur J Clin Nutr 2014; 68:1042-7. [PMID: 25028086 DOI: 10.1038/ejcn.2014.125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 05/13/2014] [Accepted: 05/26/2014] [Indexed: 01/20/2023]
Abstract
BACKGROUND/OBJECTIVES We examined the prevalence of elevated plasma high-sensitivity C-reactive protein (hs-CRP) concentrations and associations with red blood cell (RBC) long-chain n-3 polyunsaturated fatty acids (LCn-3PUFA) in the James Bay Cree population from the province of Quebec (Canada). SUBJECTS/METHODS A total of 744 Cree adults (18-91 years) from seven communities of Eastern James Bay were included in these cross-sectional analyses. Associations between RBC LCn-3PUFA and proinflammatory markers (hs-CRP, interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α)) were assessed by using multivariate general linear models with adjustment for sex, age and waist circumference. An arbitrary inflammation score was defined based on the sum of the quartiles of hs-CRP, IL-6 and TNF-α concentrations (range=3-12). RESULTS Elevated hs-CRP concentrations (>3 mg/l) were present in 46.9% (95% confidence interval (CI) 43.3-50.5) of the James Bay Cree population. RBC docosapentaenoic acid (DPAn-3; C22:5n-3) was inversely associated with hs-CRP, TNF-α and the inflammation score (all P trend<0.02), whereas eicosapentaenoic acid (C20:5n-3) and docosahexaenoic acid (C22:6n-3) in RBC were not associated with inflammation (all P trend>0.18). Among participants with RBC DPAn-3 levels above the median of the population, odds ratio of having an elevated inflammation score (≥9) was 0.67 (95% CI, 0.48-0.93) compared with participants below the median. CONCLUSIONS RESULTS indicate that low-grade systemic inflammation is highly prevalent and that higher RBC DPAn-3 levels are associated with a lower risk of systemic inflammation in the James Bay Cree population.
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O’Brien DM, Kristal AR, Nash SH, Hopkins SE, Luick BR, Stanhope KL, Havel PJ, Boyer BB. A stable isotope biomarker of marine food intake captures associations between n-3 fatty acid intake and chronic disease risk in a Yup'ik study population, and detects new associations with blood pressure and adiponectin. J Nutr 2014; 144:706-13. [PMID: 24598880 PMCID: PMC3985827 DOI: 10.3945/jn.113.189381] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The nitrogen isotope ratio (δ(15)N) of RBCs has been proposed as a biomarker of marine food intake in Yup'ik people based on strong associations with RBC eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). However, EPA and DHA derive from marine fats, whereas elevated δ(15)N derives from marine protein, and these dietary components may have different biologic effects. Whether δ(15)N is similarly associated with chronic disease risk factors compared with RBC EPA and DHA is not known. We used covariate-adjusted linear models to describe biomarker associations with chronic disease risk factors in Yup'ik people, first in a smaller (n = 363) cross-sectional study population using RBC EPA, DHA, and δ(15)N, and then in a larger (n = 772) cross-sectional study population using δ(15)N only. In the smaller sample, associations of RBC EPA, DHA, and δ(15)N with obesity and chronic disease risk factors were similar in direction and significance: δ(15)N was positively associated with total, HDL, and LDL cholesterol, apolipoprotein A-I, and insulin-like growth factor binding protein-3 (IGFBP-3), and inversely associated with triglycerides. Based on comparisons between covariate-adjusted β-coefficients, EPA was more strongly associated with circulating lipids and lipoproteins, whereas δ(15)N was more strongly associated with adipokines, the inflammatory marker interleukin-6, and IGFBP-3. In the larger sample there were new findings for this population: δ(15)N was inversely associated with blood pressure and there was a significant association (with inverse linear and positive quadratic terms) with adiponectin. In conclusion, δ(15)N is a valid measure for evaluating associations between EPA and DHA intake and chronic disease risk in Yup'ik people and may be used in larger studies. By measuring δ(15)N, we report beneficial associations of marine food intake with blood pressure and adiponectin, which may contribute to a lower incidence of some chronic diseases in Yup'ik people.
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Affiliation(s)
- Diane M. O’Brien
- Center for Alaska Native Health Research, Institute of Arctic Biology, and,Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK,To whom correspondence should be addressed: E-mail:
| | - Alan R. Kristal
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA; and
| | - Sarah H. Nash
- Center for Alaska Native Health Research, Institute of Arctic Biology, and,Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK
| | | | - Bret R. Luick
- Center for Alaska Native Health Research, Institute of Arctic Biology, and
| | - Kimber L. Stanhope
- Department of Molecular Biosciences, School of Veterinary Medicine, and,Department of Nutrition, University of California, Davis, Davis, CA
| | - Peter J. Havel
- Department of Molecular Biosciences, School of Veterinary Medicine, and,Department of Nutrition, University of California, Davis, Davis, CA
| | - Bert B. Boyer
- Center for Alaska Native Health Research, Institute of Arctic Biology, and
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KLIMENTIDIS YC, LEMAS DJ, WIENER HH, O’BRIEN DM, HAVEL PJ, STANHOPE KL, HOPKINS SE, TIWARI HK, BOYER BB. CDKAL1 and HHEX are associated with type 2 diabetes-related traits among Yup'ik people. J Diabetes 2014; 6:251-9. [PMID: 24112421 PMCID: PMC3964139 DOI: 10.1111/1753-0407.12093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 09/17/2013] [Accepted: 09/17/2013] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Genome-wide association studies (GWAS) have identified single nucleotide polymorphisms (SNPs) associated with type 2 diabetes (T2D), mainly among individuals of European ancestry. In the present study, we examined the frequency of these SNPs and their association with T2D-related traits in an Alaska Native study population with a historically low prevalence of T2D. We also investigated whether dietary characteristics that may protect against T2D, such as n-3 polyunsaturated fatty acid (PUFA) intake, modify these associations. METHODS In 1144 Yup'ik people, we examined 17 SNPs repeatedly identified in GWAS for individual and cumulative associations with T2D-related traits. Cumulative associations were evaluated using a genetic risk score (GRS) calculated by summing risk alleles. Associations were tested for interactions with sex, body mass index (BMI), and n-3 PUFA intake. RESULTS The rs7754840 SNP in CDKAL1 is significantly associated with HbA1c (P = 0.00091). The rs5015480 SNP near HHEX is significantly associated (in opposite direction to that in Europeans) with a combined fasting glucose (FG) and HbA1c measure (P = 0.00046) and with homeostatic model assessment of β-cell function (HOMA-B; P = 0.0014). The GRS is significantly associated with FG and combined FG and HbA1c only when the HHEX SNP is dropped from the GRS. Associations are not modified by BMI or n-3 PUFA intake. CONCLUSION Our results highlight the potential importance of CDKAL1 and HHEX in glucose homeostasis in this Alaska Native population with a low prevalence of T2D, and suggest that these loci should be examined in greater detail in this population.
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Affiliation(s)
- Yann C. KLIMENTIDIS
- Mel and Enid Zuckerman College of Public Health, Division of Epidemiology and Biostatistics, University of Arizona, Tucson, AZ, 85724
| | - Dominick J. LEMAS
- Department of Pediatrics, Section of Neonatology, University of Colorado Denver, Aurora, CO 80045
| | - Howard H. WIENER
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Diane M. O’BRIEN
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775
| | - Peter J. HAVEL
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616
- Department of Nutrition, University of California, Davis, Davis, CA 95616
| | - Kimber L. STANHOPE
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616
- Department of Nutrition, University of California, Davis, Davis, CA 95616
| | - Scarlett E. HOPKINS
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775
| | - Hemant K. TIWARI
- Section on Statistical Genetics, Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Bert B. BOYER
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775
- Corresponding author: Yann C. Klimentidis, PhD, Mel and Enid Zuckerman College of Public Health, Division of Epidemiology and Biostatistics, University of Arizona, Tucson, AZ, 85724. Phone: 520-621-1047,
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Aslibekyan S, Wiener HW, Havel PJ, Stanhope KL, O’Brien DM, Hopkins SE, Absher DM, Tiwari HK, Boyer BB. DNA methylation patterns are associated with n-3 fatty acid intake in Yup'ik people. J Nutr 2014; 144:425-30. [PMID: 24477300 PMCID: PMC3952620 DOI: 10.3945/jn.113.187203] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A large body of evidence links a high dietary intake of n-3 (ω-3) polyunsaturated fatty acids (PUFAs) with improved cardiometabolic outcomes. Recent studies suggested that the biologic processes underlying the observed associations may involve epigenetic changes, specifically DNA methylation. To evaluate changes in methylation associated with n-3 PUFA intake, we conducted an epigenome-wide methylation association study of long-chain n-3 PUFA intake and tested associations between the diabetes- and cardiovascular disease-related traits. We assessed DNA methylation at ∼470,000 cytosine-phosphate-guanine (CpG) sites in a cross-sectional study of 185 Yup'ik Alaska Native individuals representing the top and bottom deciles of PUFA intake. Linear regression models were used to test for the associations of interest, adjusting for age, sex, and community group. We identified 27 differentially methylated CpG sites at biologically relevant regions that reached epigenome-wide significance (P < 1 × 10⁻⁷). Specifically, regions on chromosomes 3 (helicase-like transcription factor), 10 (actin α 2 smooth muscle/Fas cell surface death receptor), and 16 (protease serine 36/C16 open reading frame 67) each harbored 2 significant correlates of n-3 PUFA intake. In conclusion, we present promising evidence of association between several biologically relevant epigenetic markers and long-term intake of marine-derived n-3 PUFAs.
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Affiliation(s)
| | | | - Peter J. Havel
- Departments of Nutrition and,Molecular Biosciences, University of California, Davis, Davis, CA
| | - Kimber L. Stanhope
- Departments of Nutrition and,Molecular Biosciences, University of California, Davis, Davis, CA
| | - Diane M. O’Brien
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska, Fairbanks, AK; and
| | - Scarlett E. Hopkins
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska, Fairbanks, AK; and
| | | | | | - Bert B. Boyer
- Center for Alaska Native Health Research, Institute of Arctic Biology, University of Alaska, Fairbanks, AK; and,To whom correspondence should be addressed. E-mail:
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40
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Schuster GU, Bratt JM, Jiang X, Pedersen TL, Grapov D, Adkins Y, Kelley DS, Newman JW, Kenyon NJ, Stephensen CB. Dietary long-chain omega-3 fatty acids do not diminish eosinophilic pulmonary inflammation in mice. Am J Respir Cell Mol Biol 2014; 50:626-36. [PMID: 24134486 PMCID: PMC4068931 DOI: 10.1165/rcmb.2013-0136oc] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 10/07/2013] [Indexed: 12/30/2022] Open
Abstract
Although the effects of fish oil supplements on airway inflammation in asthma have been studied with varying results, the independent effects of the fish oil components, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), administered separately, are untested. Here, we investigated airway inflammation and hyperresponsiveness using a mouse ovalbumin exposure model of asthma assessing the effects of consuming EPA (1.5% wt/wt), DHA (1.5% wt/wt), EPA plus DHA (0.75% each), or a control diet with no added omega-3 polyunsaturated fatty acids. Consuming these diets for 6 weeks resulted in erythrocyte membrane EPA contents (molar %) of 9.0 (± 0.6), 3.2 (± 0.2), 6.8 (± 0.5), and 0.01 (± 0.0)%; DHA contents were 6.8 (± 0.1), 15.6 (± 0.5), 12.3 (± 0.3), and 3.8 (± 0.2)%, respectively. The DHA group had the highest bronchoalveolar lavage (BAL) fluid eosinophil and IL-6 levels (P < 0.05). Similar trends were seen for macrophages, IL-4, and IL-13, whereas TNF-α was lower in omega-3 polyunsaturated fatty acid groups than the control (P < 0.05). The DHA group also had the highest airway resistance, which differed significantly from the EPA plus DHA group (P < 0.05), which had the lowest. Oxylipins were measured in plasma and BAL fluid, with DHA and EPA suppressing arachidonic acid-derived oxylipin production. DHA-derived oxylipins from the cytochrome P450 and 15-lipoxygenase pathways correlated significantly with BAL eosinophil levels. The proinflammatory effects of DHA suggest that the adverse effects of individual fatty acid formulations should be thoroughly considered before any use as therapeutic agents in asthma.
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Affiliation(s)
- Gertrud U. Schuster
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Western Human Nutrition Research Center, Immunity and Disease Prevention Unit, Davis, California
- Nutrition Department, University of California, Davis, California
| | - Jennifer M. Bratt
- Division of Pulmonary and Critical Care Medicine, University of California, Davis, California; and
| | - Xiaowen Jiang
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Western Human Nutrition Research Center, Immunity and Disease Prevention Unit, Davis, California
| | - Theresa L. Pedersen
- USDA, ARS, Western Human Nutrition Research Center, Obesity and Metabolism Research Prevention, Davis, California
| | - Dmitry Grapov
- Nutrition Department, University of California, Davis, California
| | - Yuriko Adkins
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Western Human Nutrition Research Center, Immunity and Disease Prevention Unit, Davis, California
| | - Darshan S. Kelley
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Western Human Nutrition Research Center, Immunity and Disease Prevention Unit, Davis, California
- Nutrition Department, University of California, Davis, California
| | - John W. Newman
- Nutrition Department, University of California, Davis, California
- USDA, ARS, Western Human Nutrition Research Center, Obesity and Metabolism Research Prevention, Davis, California
| | - Nicholas J. Kenyon
- Division of Pulmonary and Critical Care Medicine, University of California, Davis, California; and
| | - Charles B. Stephensen
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), Western Human Nutrition Research Center, Immunity and Disease Prevention Unit, Davis, California
- Nutrition Department, University of California, Davis, California
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Abstract
Although Alaska Native peoples were thought to be protected from cardiovascular disease (CVD), data now show that this is not the case, despite traditional lifestyles and high omega-3 fatty acid intake. In this article, the current understanding of CVD and its risk factors among Alaska Native peoples, particularly among the Yupik and Inupiat populations, will be discussed, using data from three major studies funded by the National Institutes of Health: Genetics of Coronary Artery Disease among Alaska Natives (GOCADAN), Center for Native Health Research (CANHR), and Education and Research Towards Health (EARTH). Data from these epidemiologic studies have focused concern on CVD and its risk factors among Alaska Native peoples. This review will summarize the findings of these three principal studies and will suggest future directions for research and clinical practice.
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Casey JM, Banz WJ, Krul ES, Butteiger DN, Goldstein DA, Davis JE. Effect of stearidonic acid-enriched soybean oil on fatty acid profile and metabolic parameters in lean and obese Zucker rats. Lipids Health Dis 2013; 12:147. [PMID: 24139088 PMCID: PMC4015945 DOI: 10.1186/1476-511x-12-147] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 10/10/2013] [Indexed: 12/20/2022] Open
Abstract
Background Consumption of marine-based oils high in omega-3 polyunsaturated fatty acids (n3PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) is known to protect against obesity-related pathologies. It is less clear whether traditional vegetable oils with high omega-6 polyunsaturated fatty acid (n6PUFA) content exhibit similar therapeutic benefits. As such, this study examined the metabolic effects of a plant-based n3PUFA, stearidonic acid (SDA), in polygenic obese rodents. Methods Lean (LZR) and obese Zucker (OZR) rats were provided either a standard westernized control diet (CON) with a high n6PUFA to n3PUFA ratio (i.e., 16.2/1.0) or experimental diet modified with flaxseed (FLAX), menhaden (FISH), or SDA oil that resulted in n6PUFA to n3PUFA ratios of 1.7/1.0, 1.3/1.0, and 1.0/0.8, respectively. Results After 12 weeks, total adiposity, dyslipidemia, glucose intolerance, and hepatic steatosis were all greater, whereas n3PUFA content in liver, adipose, and muscle was lower in OZR vs. LZR rats. Obese rodents fed modified FISH or SDA diets had lower serum lipids and hepatic fat content vs. CON. The omega-3 index (i.e., ΣEPA + DHA in erythrocyte membrane) was 4.0, 2.4, and 2.0-fold greater in rodents provided FISH, SDA, and FLAX vs. CON diet, irrespective of genotype. Total hepatic n3PUFA and DHA was highest in rats fed FISH, whereas both hepatic and extra-hepatic EPA was higher with FISH and SDA groups. Conclusions These data indicate that SDA oil represents a viable plant-derived source of n3PUFA, which has therapeutic implications for several obesity-related pathologies.
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Affiliation(s)
| | | | | | | | | | - Jeremy E Davis
- Department of Animal Science, Food & Nutrition, Southern Illinois University, Carbondale, IL 62901, USA.
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Kantor ED, Lampe JW, Kratz M, White E. Lifestyle factors and inflammation: associations by body mass index. PLoS One 2013; 8:e67833. [PMID: 23844105 PMCID: PMC3699492 DOI: 10.1371/journal.pone.0067833] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/22/2013] [Indexed: 12/20/2022] Open
Abstract
Chronic inflammation, which is associated with obesity, may play a role in the etiology of several diseases. Thus, reducing inflammation may offer a disease-prevention strategy, particularly among the obese. Several modifiable factors have been associated with inflammation, including: dietary fiber intake, saturated fat intake, physical activity, smoking, alcohol, and use of certain supplements and medications (glucosamine, chondroitin, fish oil, vitamin E, statins and aspirin). To study whether these associations differ by body mass index (BMI), we used data on 9,895 adults included in the 1999-2004 cycles of the National Health and Nutrition Examination Survey (NHANES). Survey-weighted linear regression was used to evaluate the associations between modifiable factors and serum high-sensitivity C-reactive protein (hsCRP) concentrations across the following groups: underweight/normal weight (BMI<25 kg/m(2)), overweight (25-<30 kg/m(2)) and obese (30+ kg/m(2)). While several factors were significantly associated with decreased hsCRP among the normal weight or overweight groups (increased fiber intake, lower saturated fat intake, physical activity, not smoking, and use of chondroitin, fish oil and statins), only increasing dietary fiber intake and moderate alcohol consumption were associated with reduced hsCRP among the obese. Effect modification by BMI was statistically significant for the saturated fat-hsCRP and smoking-hsCRP associations. These results suggest that posited anti-inflammatory drugs and behaviors may be less strongly associated with inflammation among the obese than among lower weight persons.
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Affiliation(s)
- Elizabeth D. Kantor
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
- * E-mail:
| | - Johanna W. Lampe
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Mario Kratz
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Emily White
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
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Jamieson JA, Kuhnlein HV, Weiler HA, Egeland GM. Higher n3-fatty acid status is associated with lower risk of iron depletion among food insecure Canadian Inuit women. BMC Public Health 2013; 13:289. [PMID: 23547888 PMCID: PMC3623721 DOI: 10.1186/1471-2458-13-289] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 03/25/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND High rates of iron deficiency and anemia are common among Inuit and Arctic women despite a traditional diet based on animal source foods. However, representative data on iron status and relevant determinants for this population are lacking. The objectives were to determine the prevalence of anemia and depletion of iron stores, then to identify correlates of iron status in non-pregnant Canadian Inuit women. METHODS In a cross-sectional survey of 1550 women in the International Polar Year Inuit Health Survey, 2007-2008, hemoglobin, serum ferritin, soluble transferrin receptor (on a subset), C-reactive protein (CRP), RBC fatty acid composition, and H pylori serology were analyzed on fasting venous blood. Sociodemographic, food security status, anthropometric, dietary, and health data were collected. Correlates of iron status were assessed with multivariate linear and logistic models. RESULTS Anemia was observed in 21.7% and iron deficient erythropoiesis in 3.3% of women. For women with CRP ≤ 10 mg/L (n = 1260) 29.4% had depleted iron stores. Inadequate iron intakes were observed in 16% of premenopausal and <1% of postmenopausal women. Among food insecure women, higher long-chain (n-3) polyunsaturated fatty acid (LC-PUFA) status, which reflects a more traditional food pattern, was associated with reduced risk of iron depletion. CONCLUSIONS Iron depletion and anemia are a concern for Inuit women despite adequate total dietary iron intake primarily from heme sources. The high prevalence of H. pylori exposure, together with dietary iron adequacy, suggests an inflammation-driven iron deficiency and mild anemia. The anti-inflammatory properties of LC-PUFA may be important for iron status in this population.
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Affiliation(s)
- Jennifer A Jamieson
- Centre for Indigenous Peoples’ Nutrition and Environment (CINE), McGill University, Montreal, Canada
- School of Dietetics and Human Nutrition, McGill University, Montreal, Canada
| | - Harriet V Kuhnlein
- Centre for Indigenous Peoples’ Nutrition and Environment (CINE), McGill University, Montreal, Canada
- School of Dietetics and Human Nutrition, McGill University, Montreal, Canada
| | - Hope A Weiler
- School of Dietetics and Human Nutrition, McGill University, Montreal, Canada
| | - Grace M Egeland
- Centre for Indigenous Peoples’ Nutrition and Environment (CINE), McGill University, Montreal, Canada
- School of Dietetics and Human Nutrition, McGill University, Montreal, Canada
- Department of Public Health and Primary Health Care, University of Bergen and The Norwegian Institute of Public Health, Bergen, Norway
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Lemas DJ, Klimentidis YC, Wiener HH, O'Brien DM, Hopkins SE, Allison DB, Fernandez JR, Tiwari HK, Boyer BB. Obesity polymorphisms identified in genome-wide association studies interact with n-3 polyunsaturated fatty acid intake and modify the genetic association with adiposity phenotypes in Yup'ik people. GENES AND NUTRITION 2013; 8:495-505. [PMID: 23526194 DOI: 10.1007/s12263-013-0340-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 02/26/2013] [Indexed: 11/26/2022]
Abstract
n-3 Polyunsaturated fatty acids (n-3 PUFAs) have anti-obesity effects that may modulate risk of obesity, in part, through interactions with genetic factors. Genome-wide association studies (GWAS) have identified genetic variants associated with body mass index (BMI); however, the extent to which these variants influence adiposity through interactions with n-3 PUFAs remains unknown. We evaluated 10 highly replicated obesity GWAS single nucleotide polymorphisms (SNPs) for individual and cumulative associations with adiposity phenotypes in a cross-sectional sample of Yup'ik people (n = 1,073) and evaluated whether genetic associations with obesity were modulated by n-3 PUFA intake. A genetic risk score (GRS) was calculated by adding the BMI-increasing alleles across all 10 SNPs. Dietary intake of n-3 PUFAs was estimated using nitrogen stable isotope ratio (δ(15)N) of red blood cells, and genotype-phenotype analyses were tested in linear models accounting for familial correlations. GRS was positively associated with BMI (p = 0.012), PBF (p = 0.022), ThC (p = 0.025), and waist circumference (p = 0.038). The variance in adiposity phenotypes explained by the GRS included BMI (0.7 %), PBF (0.3 %), ThC (0.7 %), and WC (0.5 %). GRS interactions with n-3 PUFAs modified the association with adiposity and accounted for more than twice the phenotypic variation (~1-2 %), relative to GRS associations alone. Obesity GWAS SNPs contribute to adiposity in this study population of Yup'ik people and interactions with n-3 PUFA intake potentiated the risk of fat accumulation among individuals with high obesity GRS. These data suggest the anti-obesity effects of n-3 PUFAs among Yup'ik people may, in part, be dependent upon an individual's genetic predisposition to obesity.
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Affiliation(s)
- Dominick J Lemas
- Institute of Arctic Biology, Center for Alaska Native Health Research, University of Alaska Fairbanks, 311 Irving I Building, PO Box 757000, Fairbanks, AK, 99775-7000, USA,
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Using exploratory factor analysis of FFQ data to identify dietary patterns among Yup'ik people. Public Health Nutr 2013; 17:510-8. [PMID: 23290469 DOI: 10.1017/s1368980012005411] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE An FFQ developed by the Center for Alaska Native Health Research for studies in Yup'ik people includes market foods and subsistence foods such as moose, seal, waterfowl and salmon that may be related to disease risk. Because the FFQ contains >100 food items, we sought to characterize dietary patterns more simply for use in ongoing pharmacogenomics studies. DESIGN Exploratory factor analysis was used to derive a small number of 'factors' that explain a substantial amount of the variation in the Yup'ik diet. We estimated factor scores and measured associations with demographic characteristics and biomarkers. SETTING South-west Alaska, USA. SUBJECTS Yup'ik people (n 358) aged ≥18 years. RESULTS We identified three factors that each accounted for ≥10 % of the common variance: the first characterized by 'processed foods' (e.g. salty snacks, sweetened cereals); the second by 'fruits and vegetables' (e.g. fresh citrus, potato salad); and the third by 'subsistence foods' (seal or walrus soup, non-oily fish). Participants from coastal communities had higher values for the 'subsistence' factor, whereas participants from inland communities had higher values for the 'fruits and vegetables' factor. A biomarker of marine intake, δ 15N, was correlated with the 'subsistence' factor, whereas a biomarker of corn- and sugarcane-based market food intake, δ 13C, was correlated with 'processed foods'. CONCLUSIONS The exploratory factor analysis identified three factors that appeared to reflect dietary patterns among Yup'ik based on associations with participant characteristics and biomarkers. These factors will be useful for chronic disease studies in this population.
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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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Gleim S, Stitham J, Tang WH, Martin KA, Hwa J. An eicosanoid-centric view of atherothrombotic risk factors. Cell Mol Life Sci 2012; 69:3361-80. [PMID: 22491820 PMCID: PMC3691514 DOI: 10.1007/s00018-012-0982-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 03/22/2012] [Accepted: 03/26/2012] [Indexed: 02/06/2023]
Abstract
Cardiovascular disease is the foremost cause of morbidity and mortality in the Western world. Atherosclerosis followed by thrombosis (atherothrombosis) is the pathological process underlying most myocardial, cerebral, and peripheral vascular events. Atherothrombosis is a complex and heterogeneous inflammatory process that involves interactions between many cell types (including vascular smooth muscle cells, endothelial cells, macrophages, and platelets) and processes (including migration, proliferation, and activation). Despite a wealth of knowledge from many recent studies using knockout mouse and human genetic studies (GWAS and candidate approach) identifying genes and proteins directly involved in these processes, traditional cardiovascular risk factors (hyperlipidemia, hypertension, smoking, diabetes mellitus, sex, and age) remain the most useful predictor of disease. Eicosanoids (20 carbon polyunsaturated fatty acid derivatives of arachidonic acid and other essential fatty acids) are emerging as important regulators of cardiovascular disease processes. Drugs indirectly modulating these signals, including COX-1/COX-2 inhibitors, have proven to play major roles in the atherothrombotic process. However, the complexity of their roles and regulation by opposing eicosanoid signaling, have contributed to the lack of therapies directed at the eicosanoid receptors themselves. This is likely to change, as our understanding of the structure, signaling, and function of the eicosanoid receptors improves. Indeed, a major advance is emerging from the characterization of dysfunctional naturally occurring mutations of the eicosanoid receptors. In light of the proven and continuing importance of risk factors, we have elected to focus on the relationship between eicosanoids and cardiovascular risk factors.
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Affiliation(s)
- Scott Gleim
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511
| | - Jeremiah Stitham
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511
| | - Wai Ho Tang
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511
| | - Kathleen A. Martin
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511
| | - John Hwa
- Yale Cardiovascular Research Center, Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06511
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Hall JCE, Priestley JV, Perry VH, Michael-Titus AT. Docosahexaenoic acid, but not eicosapentaenoic acid, reduces the early inflammatory response following compression spinal cord injury in the rat. J Neurochem 2012; 121:738-50. [DOI: 10.1111/j.1471-4159.2012.07726.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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50
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Banz WJ, Davis JE, Clough RW, Cheatwood JL. Stearidonic acid: is there a role in the prevention and management of type 2 diabetes mellitus? J Nutr 2012; 142:635S-640S. [PMID: 22279133 DOI: 10.3945/jn.111.146829] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Obesity and its related comorbidities are major public health concerns in the United States with over two-thirds of adults and one-third of children classified as overweight or obese. The prevalence of type 2 diabetes mellitus (T2DM) has similarly risen to an estimated 25.8 million, which accounts for a staggering $174 billion in annual healthcare costs. Identification of dietary interventions that protect against the development of T2DM would markedly reduce the medical and economic consequences of the disease. Hence, we review current evidence supporting a role of (n-3) PUFA in T2DM and explore potential therapeutic implications of stearidonic acid (SDA). The low consumption of fish in the US along with a reduced efficiency to interconvert most plant (n-3) PUFA highlights a need to find alternative sources of (n-3) PUFA. The efficient biological conversion of SDA to EPA underscores the potential implications of SDA as a source of (n-3) PUFA. The full therapeutic efficacy of SDA remains to be further determined. However, recent data have suggested a protective role of SDA consumption on markers of dyslipidemia and inflammation. The AHA recommends that healthy individuals consume oily fish at least twice per week and individuals with a history of cardiovascular disease consume 1 g of EPA+DHA/d. These goals will likely not be met by the typical American diet. Therefore, SDA may represent a sustainable alternative to marine-based (n-3) PUFA and may have novel therapeutic efficacy regarding the development of T2DM.
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Affiliation(s)
- William J Banz
- Department of Animal Science, Southern Illinois University, School of Medicine, Carbondale, IL, USA.
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