1
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Bäck M. Icosapent ethyl in cardiovascular prevention: Resolution of inflammation through the eicosapentaenoic acid - resolvin E1 - ChemR23 axis. Pharmacol Ther 2023:108439. [PMID: 37201735 DOI: 10.1016/j.pharmthera.2023.108439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/03/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
Cardiovascular outcome trials on omega-3 fatty acids have generated contradictory results but indicate a dose-dependent beneficial effect of eicosapentaenoic acid (EPA). Beneficial cardiovascular effects of EPA may in addition to triglyceride lowering be mediated through alternative mechanisms of action. In this review, the link between EPA and a resolution of atherosclerotic inflammation is addressed. EPA is a substrate for the enzymatic metabolism into the lipid mediator resolvin E1 (RvE1), which activates the receptor ChemR23 to transduce an active resolution of inflammation. This has been shown to dampen the immune response and provide atheroprotective responses in different models. The intermediate EPA metabolite 18-HEPE emerges as a biomarker of EPA metabolism towards proresolving mediators in observational studies. Genetic variations within the EPA-RvE1-ChemR23 axis affecting the response to EPA may open up for precision medicine to identify responders and non-responders to EPA and fish oil supplementation. In conclusion, activation of the EPA-RvE1-ChemR23 axis towards a resolution of inflammation may contribute to beneficial effects in cardiovascular prevention.
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Affiliation(s)
- Magnus Bäck
- Department of Cardiology, Heart and Vascular Center, Karolinska University Hospital, Stockholm, Sweden; Translational Cardiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Université de Lorraine, Inserm, DCAC, Nancy, France; CHRU Nancy, Vandœuvre-lès-Nancy, France.
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2
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Bäck M, Xhaard C, Rouget R, Thuillier Q, Plunde O, Larsson SC, Girerd N, Ferreira JP, Boivin JM, Bozec E, Mercklé L, Zannad F, Hoge A, Guillaume M, Dandine-Roulland C, Floch EL, Bacq-Daian D, Deleuze JF, Van den Berghe L, Nazare JA, Laville M, Branlant C, Behm-Ansmant I, Wagner S, Rossignol P. Fatty acid desaturase genetic variations and dietary omega-3 fatty acid intake associate with arterial stiffness. EUROPEAN HEART JOURNAL OPEN 2022; 2:oeac016. [PMID: 35919123 PMCID: PMC9242081 DOI: 10.1093/ehjopen/oeac016] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 02/11/2022] [Indexed: 11/13/2022]
Abstract
Abstract
Aims
Long-chain polyunsaturated fatty acids (PUFAs) generate diverse bioactive lipid mediators, which tightly regulate vascular inflammation. The effects of omega-3 PUFA supplementation in cardiovascular prevention however remain controversial. In addition to direct dietary intake, fatty acid desaturases (FADS) determine PUFA levels. Increased arterial stiffness represents an independent predictor of mortality and cardiovascular events. The aim of the present study was to determine the association of PUFA intake, FADS1 genotype, and FADS expression with arterial stiffness.
Methods and results
A cross-sectional population-based cohort study of 1464 participants without overt cardiovascular disease was conducted. Dietary intake was assessed using a food frequency questionnaire. Arterial stiffness was assessed by carotid–femoral pulse wave velocity (cfPWV), and the FADS1 locus variant was determined. Blood cell transcriptomics was performed in a subset of 410 individuals. Pulse wave velocity was significantly associated with the FADS1 locus variant. Differential associations between PWV and omega-3 PUFA intake were observed depending on the FADS1 genotype. High omega-3 PUFA intake attenuated the FADS1 genotype-dependent associations. Carriers of the minor FADS1 locus variant exhibited increased expression of FADS2, which is associated with PWV.
Conclusion
Taken together, these findings point to FADS1 genotype-dependent associations of omega-3 PUFA intake on subclinical cardiovascular disease. These findings may have implications for identifying responders and non-responders to omega-3 PUFA supplementation and open up for personalized dietary counselling in cardiovascular prevention.
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Affiliation(s)
- Magnus Bäck
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
- Karolinska Institutet Department of Medicine Solna, , 17176 Stockholm, Sweden
- Karolinska University Hospital Huddinge Department of Cardiology, , 14186 Stockholm, Sweden
| | - Constance Xhaard
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Raphael Rouget
- Université de Lorraine , CNRS, UMR 7365, IMoPA, F54000 Nancy, France
| | - Quentin Thuillier
- Université de Lorraine , CNRS, UMR 7365, IMoPA, F54000 Nancy, France
| | - Oscar Plunde
- Karolinska Institutet Department of Medicine Solna, , 17176 Stockholm, Sweden
| | - Susanna C. Larsson
- Institute of Environmental Medicine, Karolinska Institutet Unit of Cardiovascular and Nutritional Epidemiology, , 17177 Stockholm, Sweden
- Uppsala University Department of Surgical Sciences, , Uppsala, Sweden
| | - Nicolas Girerd
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - João Pedro Ferreira
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Jean-Marc Boivin
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Erwan Bozec
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Ludovic Mercklé
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Faiez Zannad
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Axelle Hoge
- Université de Liège Département des Sciences de la Santé publique, , Liège, Belgium
| | - Michèle Guillaume
- Université de Liège Département des Sciences de la Santé publique, , Liège, Belgium
| | | | - Edith Le Floch
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay , Evry, France
| | - Delphine Bacq-Daian
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay , Evry, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay , Evry, France
| | - Laurie Van den Berghe
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, F-CRIN/FORCE Network, Pierre Bénite , Lyon, France
| | - Julie-Anne Nazare
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, F-CRIN/FORCE Network, Pierre Bénite , Lyon, France
| | - Martine Laville
- Centre de Recherche en Nutrition Humaine Rhône-Alpes, Univ-Lyon, CarMeN Laboratory, Université Claude Bernard Lyon1, Hospices Civils de Lyon, F-CRIN/FORCE Network, Pierre Bénite , Lyon, France
| | | | | | - Sandra Wagner
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
| | - Patrick Rossignol
- University of Lorraine , INSERM U1116, CIC 1433, FCRIN INI-CRCT, Nancy University Hospital, Nancy, France
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3
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El-Shal LM, El-Star AAA, Azmy AM, Elnegris HM. The possible protective role of N-acetyl cysteine on duodenal mucosa of high fat diet and orlistat treated adult male albino rats and the active role of tumor necrosis factor α (TNFα) and Interleukin 6 (IL6) (histological and biochemical study). Ultrastruct Pathol 2022; 46:18-36. [PMID: 34979873 DOI: 10.1080/01913123.2021.2007194] [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: 10/19/2022]
Abstract
BACKGROUND Obesity is a major universal health issue linked to a majority of illness. AIM To evaluate the histological and biochemical changes occurred in the duodenal mucosa of high fat diet HFD and orlistat fed rats and to assess the possible protective role of N-acetyl cysteine NAC supplementation. MATERIAL AND METHOD Sixty male albino rats weighing 180-200 g were classified randomly into control group I and three experimental groups (HFD group II, HFD + orlistat group III, and HFD + orlistat + NAC group IV). All experimental groups received HFD alone/and treatment for 6 weeks. Group III received orlistat (32 mg/kg/day) before meals and group IV received the same regimen as group III in addition to NAC (230 mg/kg/day) after meals. After completion of the experiment, duodenal sections were processed for histological examination, oxidative stress parameters, and semiqualitative real time PCR for proinflammatory mediators TNFα and IL6 evaluation. Also, plasma lipid parameters were assessed and morphometric duodenal results were analyzed statistically. RESULTS By histological examination of HFD and (HFD + orlistat) groups, we found severe to moderate duodenal structural disturbances, increased goblet cells, collagen fibers, and BAX and iNOS immunostaining. By Biochemical examination, both groups showed increased proinflammatory markers level (TNFα and IL6) with decreased all antioxidant parameters and increased MDA. Moreover, NAC treatment in group IV significantly reduced all structural changes, levels of proinflammatory mediators and increased all antioxidant parameter levels and decreased MDA. CONCLUSION All findings elucidated that NAC could be accounted to be a useful drug for protection of duodenal mucosa of HFD and orlistat treated animals.
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Affiliation(s)
- Laila Moustafa El-Shal
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Alyaa A Abd El-Star
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Abeer M Azmy
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Heba M Elnegris
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.,Department of Histology and Cell Biology, Faculty of Medicine, Badr University in Cairo, Cairo, Egypt
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4
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Mantzioris E, Muhlhausler BS, Villani A. Impact of the Mediterranean Dietary pattern on n-3 fatty acid tissue levels-A systematic review. Prostaglandins Leukot Essent Fatty Acids 2022; 176:102387. [PMID: 34929617 DOI: 10.1016/j.plefa.2021.102387] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 02/03/2023]
Abstract
INTRODUCTION The Mediterranean Diet (MedDiet) is described as a plant-based dietary pattern with adherence associated with reductions in chronic disease risk and longevity. Although the nutrient profile is diverse and complex, the MedDiet is often described as a rich source of n-3 polyunsaturated fatty acids (PUFA) derived from fish, seafood and nuts. However, whether MedDiet adherence results in appreciable increases in tissue levels of n-3 PUFAs is yet to be systematically investigated. This systematic review synthesized the literature to determine the impact of the MedDiet on n-3 PUFA tissue levels. MATERIALS AND METHODS Medline, Embase, Amed, and CINAHL databases were searched for studies reporting on adherence to a MedDiet and tissue levels of n-3 PUFAs. PROSPERO registration number is CRD 42020162114. RESULTS Twenty-two studies were included. Seven were observational studies and 15 were randomised controlled trials (RCTs). All observational studies reported a positive relationship between adherence and higher tissue n-3 PUFA levels. Two-thirds (10/15) of RCTs reported significant increases in n-3 PUFA concentrations. DISCUSSION MedDiet adherence is associated with higher tissue levels of n-3 PUFA. However, we report heterogeneity in the description across all MedDiet interventions.
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Affiliation(s)
- Evangeline Mantzioris
- UniSA: Clinical & Health Sciences, Alliance for Research in Nutrition, Exercise and Activity (ARENA), University of South Australia, North Terrace and Frome Rd, Adelaide SA 5000, Australia.
| | | | - Anthony Villani
- School of Health and Behavioural Sciences, University of the Sunshine Coast, Queensland, Australia
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5
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Murff HJ, Shrubsole MJ, Cai Q, Su T, Dooley JH, Cai SS, Zheng W, Dai Q. N-3 Long Chain Fatty Acids Supplementation, Fatty Acids Desaturase Activity, and Colorectal Cancer Risk: A Randomized Controlled Trial. Nutr Cancer 2021; 74:1388-1398. [PMID: 34291724 PMCID: PMC8782932 DOI: 10.1080/01635581.2021.1955286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 06/08/2021] [Accepted: 06/16/2021] [Indexed: 01/03/2023]
Abstract
INTRODUCTION n-3 long-chain polyunsaturated fatty acids (LCPUFA) have anti-inflammatory effects and may reduce colorectal cancer risk. The purpose of this study was to evaluate the effects of n-3 LCPUFA supplementation on markers of rectal cell proliferation and apoptosis and examine how genetic variation in desaturase enzymes might modify this effect. METHODS We conducted a randomized, double-blind, control six-month trial of 2.5 grams of n-3 LCPUFA per day compared to olive oil. Study participants had a history of colorectal adenomas. Randomization was stratified based on the gene variant rs174535 in the fatty acid desaturase 1 enzyme (FADS1). Our primary outcome was change in markers of rectal epithelial proliferation and apoptosis. RESULTS A total of 141 subjects were randomized. We found no difference in apoptosis markers between participants randomized to n-3 LCPUFA compared to olive oil (P = 0.41). N-3 LCPUFA supplementation increased cell proliferation in the lower colonic crypt compared to olive oil (P = 0.03) however baseline indexes of proliferation were different between the groups at randomization. We found no evidence that genotype modified the effect. CONCLUSIONS Our study did not show evidence of a proliferative or pro-apoptotic effect on n-3 LCPUFA supplementation on rectal mucosa regardless of the FADS genotype.ClinicalTrials.gov Identifier: NCT01661764Supplemental data for this article is available online at https://dx.doi.org/10.1080/01635581.2021.1955286.
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Affiliation(s)
- Harvey J. Murff
- Division of General Internal Medicine and Public Health, Vanderbilt University Medical Center, Nashville, TN
- GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center
| | - Martha J. Shrubsole
- GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
- Division of Epidemiology, Vanderbilt University Medical Center
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center
| | - Qiuyin Cai
- Division of Epidemiology, Vanderbilt University Medical Center
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center
| | - Timothy Su
- Division of Epidemiology, Vanderbilt University Medical Center
| | | | - Sunny S. Cai
- Tulane University School of Medicine, New Orleans, LA
| | - Wei Zheng
- GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
- Division of Epidemiology, Vanderbilt University Medical Center
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center
| | - Qi Dai
- Division of Epidemiology, Vanderbilt University Medical Center
- Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center
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6
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Hussey B, Steel RP, Gyimah B, Reynolds JC, Taylor IM, Lindley MR, Mastana S. DNA methylation of tumour necrosis factor (TNF) alpha gene is associated with specific blood fatty acid levels in a gender-specific manner. Mol Genet Genomic Med 2021; 9:e1679. [PMID: 33818919 PMCID: PMC8683629 DOI: 10.1002/mgg3.1679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 03/09/2021] [Accepted: 03/23/2021] [Indexed: 01/22/2023] Open
Abstract
Background Fatty acids, specifically polyunsaturated fatty acids (PUFAs) play an important role in inflammation and its resolution, however, their interaction with the epigenome is relatively unexplored. Here we investigate the relationship between circulating blood fatty acids and the DNA methylation of the cytokine encoding gene tumour necrosis factor (TNF, OMIM 191160). Methods Using a cross‐sectional study approach, we collected blood samples from adults (N=88 (30 males, 58 females); 18–74 years old) for DNA methylation pyrosequencing analysis at four sites in TNF exon 1 and gas‐chromatography mass‐spectrometry analysis of the fatty acid profile of dried blood spots (DBS). Results Methylation levels of TNF exon 1 are significantly correlated with specific fatty acids in a gender‐specific manner. In the males the PUFAs Docosahexaenoic Acid (DHA) and Arachidonic Acid (AA) were positively associated with TNF methylation, as was the saturated fatty acid (SFA) Stearic Acid; in contrast, mono‐unsaturated fatty acids (MUFAs) had a negative association. In the females, omega‐6 PUFA γ‐Linolenic acid (GLA) was negatively correlated with TNF methylation; Adrenic acid and Eicosadienoic Acid were positively correlated with TNF methylation. Conclusion These results suggest that one way that fatty acids interact with the inflammation is through altered methylation profiles of cytokine genes; thus, providing potential therapeutic targets for nutritional and health interventions.
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Affiliation(s)
- Bethan Hussey
- Translational Chemical Biology (TCB) Research Group, Loughborough, University, Loughborough, UK.,School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Richard P Steel
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK.,School of Social Sciences, Nottingham Trent University, Nottingham, UK
| | - Boakye Gyimah
- Translational Chemical Biology (TCB) Research Group, Loughborough, University, Loughborough, UK.,Department of Chemistry, Loughborough University, Loughborough, UK
| | - James C Reynolds
- Translational Chemical Biology (TCB) Research Group, Loughborough, University, Loughborough, UK.,Department of Chemistry, Loughborough University, Loughborough, UK
| | - Ian M Taylor
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Martin R Lindley
- Translational Chemical Biology (TCB) Research Group, Loughborough, University, Loughborough, UK.,School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Sarabjit Mastana
- Translational Chemical Biology (TCB) Research Group, Loughborough, University, Loughborough, UK.,School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
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7
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FADS1 and FADS2 polymorphism are associated with changes in fatty acid concentrations after calorie-restricted Central European and Mediterranean diets. Menopause 2020; 26:1415-1424. [PMID: 31567872 DOI: 10.1097/gme.0000000000001409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE In the present study, we tested whether calorie-restricted diets differing in their percentage of energy derived from monounsaturated fatty acids and carbohydrates can affect the metabolism of fatty acids (FAs) in postmenopausal women. Moreover, we examined whether polymorphisms of FADS1 and FADS2 are associated with these changes. METHODS Postmenopausal women (the mean age: 60.5 ± 5.0 y) were randomized for 16 weeks to two different calorie-restricted diets: a Central European diet (CED) or a Mediterranean diet (MED). RESULTS After the intervention, levels of most FAs in red blood cells decreased in both groups. The delta values for the 20:1n-9 and the 20:2n-6 levels differed between the CED and the MED (-1.55 ± 4.02 μg/mL vs 0.39 ± 4.11 μg/mL and -0.62 ± 10.93 μg/mL vs 3.06 ± 8.75 μg/mL; P < 0.05). Women in the CED group with at least one minor allele of FADS genes had greater decreases of α-linolenic acid, dihomo-γ-linolenic acid, total n-6, and total PUFA (by approximately 70%, 40%, 35%, and 35%, respectively) than did women with the major alleles. After the intervention, the change in the lipid accumulation product index was -28.28 ± 27.84 and -32.00 ± 78.55 in the CED and the MED group, respectively. CONCLUSIONS The effect of the dietary intervention on FA metabolism seems to depend mostly on calorie restriction, but not on type of diet. FADS1 and FADS2 gene polymorphisms can modify the response to the CED.
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Serra-Majem L, Román-Viñas B, Sanchez-Villegas A, Guasch-Ferré M, Corella D, La Vecchia C. Benefits of the Mediterranean diet: Epidemiological and molecular aspects. Mol Aspects Med 2019; 67:1-55. [PMID: 31254553 DOI: 10.1016/j.mam.2019.06.001] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 01/16/2023]
Abstract
More than 50 years after the Seven Countries Study, a large number of epidemiological studies have explored the relationship between the Mediterranean diet (MD) and health, through observational, case-control, some longitudinal and a few experimental studies. The overall results show strong evidence suggesting a protective effect of the MD mainly on the risk of cardiovascular disease (CVD) and certain types of cancer. The beneficial effects have been attributed to the types of food consumed, total dietary pattern, components in the food, cooking techniques, eating behaviors and lifestyle behaviors, among others. The aim of this article is to review and summarize the knowledge derived from the literature focusing on the benefits of the MD on health, including those that have been extensively investigated (CVD, cancer) along with more recent issues such as mental health, immunity, quality of life, etc. The review begins with a brief description of the MD and its components. Then we present a review of studies evaluating metabolic biomarkers and genotypes in relation to the MD. Other sections are dedicated to observation and intervention studies for various pathologies. Finally, some insights into the relationship between the MD and sustainability are explored. In conclusion, the research undertaken on metabolomics approaches has identified potential markers for certain MD components and patterns, but more investigation is needed to obtain valid measures. Further evaluation of gene-MD interactions are also required to better understand the mechanisms by which the MD diet exerts its beneficial effects on health. Observation and intervention studies, particularly PREDIMED, have provided invaluable data on the benefits of the MD for a wide range of chronic diseases. However further research is needed to explore the effects of other lifestyle components associated with Mediterranean populations, its environmental impact, as well as the MD extrapolation to non-Mediterranean contexts.
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Affiliation(s)
- Lluis Serra-Majem
- Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Las Palmas, Spain; Preventive Medicine Service, Centro Hospitalario Universitario Insular Materno Infantil (CHUIMI), Canarian Health Service, Las Palmas, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain; Nutrition Research Foundation, University of Barcelona Science Park, Barcelona, Spain.
| | - Blanca Román-Viñas
- Nutrition Research Foundation, University of Barcelona Science Park, Barcelona, Spain; School of Health and Sport Sciences (EUSES), Universitat de Girona, Salt, Spain; Department of Physical Activity and Sport Sciences, Blanquerna, Universitat Ramon Llull, Barcelona, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Almudena Sanchez-Villegas
- Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, Las Palmas, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Marta Guasch-Ferré
- Department of Nutrition, Harvard T.H.Chan School of Public Health, Boston, MA, USA; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Dolores Corella
- Genetic and Molecular Epidemiology Unit. Department of Preventive Medicine. University of Valencia, Valencia, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20133, Milan, Italy
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9
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Isom CA, Shrubsole MJ, Cai Q, Smalley WE, Ness RM, Zheng W, Murff HJ. Arachidonic acid and colorectal adenoma risk: a Mendelian randomization study. Clin Epidemiol 2018; 11:17-22. [PMID: 30588120 PMCID: PMC6302799 DOI: 10.2147/clep.s186883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Previous studies have shown a link between increased dietary intake of arachidonic acid (ARA) and colorectal neoplasms. It has been shown that erythrocyte phospholipid membrane concentrations of ARA are strongly determined by genetic variation. Fatty acid desaturase (FADS) controls the rate limiting step in ARA production, and FADS variant rs174537 has been shown to be responsible for up to 18.6% of the variation seen. To determine if a causal association exists between erythrocyte membrane ARA concentrations and colorectal adenomas, we conducted a Mendelian randomization (MR) analysis using rs174537 as an instrumental variable (IV). MR analysis was chosen because it is less susceptible to bias and confounding. Patients and methods A case-control study was performed using the Tennessee Colorectal Polyps Study. Patients were matched on age, gender, race, facility site, and year of colonoscopy. Cases were defined as any colorectal adenoma on colonoscopy (n=909) and controls were polyp free (n=855). A two-stage logistic regression was conducted using rs174537 as the IV with the dependent variable being the presence of a colorectal adenoma on colonoscopy. Results Cases were older (59 vs 57 years of age, P<0.0001), and more likely to use alcohol (47.4% vs 19.8%, P=0.001) and to smoke (77.0% vs 66.9%, P<0.0001). There was no statistically significant difference in: age, sex, alcohol use, body mass index (BMI), or NSAID use when stratified by the rs174537 alleles. Genotype was strongly associated with erythrocyte membrane ARA concentrations (P<0.0001). We found no evidence of an association between our IV (rs174537) and colorectal adenomas (P=0.41). Conclusion In our MR study increased erythrocyte ARA concentrations were not associated with the risk of colorectal adenomas.
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Affiliation(s)
- Chelsea A Isom
- Department of General Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Martha J Shrubsole
- Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, USA.,GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA,
| | - Qiuyin Cai
- Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Walter E Smalley
- Department of Health Policy, Vanderbilt University Medical Center, Nashville, TN, USA.,Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Reid M Ness
- Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Wei Zheng
- Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, USA.,GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA,
| | - Harvey J Murff
- GRECC, Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA, .,Division of General Internal Medicine and Public Health, Vanderbilt University Medical Center, Nashville, TN, USA,
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10
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Lankinen M, Uusitupa M, Schwab U. Genes and Dietary Fatty Acids in Regulation of Fatty Acid Composition of Plasma and Erythrocyte Membranes. Nutrients 2018; 10:nu10111785. [PMID: 30453550 PMCID: PMC6265745 DOI: 10.3390/nu10111785] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/01/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022] Open
Abstract
The fatty acid compositions of plasma lipids and cell membranes of certain tissues are modified by dietary fatty acid composition. Furthermore, many other factors (age, sex, ethnicity, health status, genes, and gene × diet interactions) affect the fatty acid composition of cell membranes or plasma lipid compartments. Therefore, it is of great importance to understand the complexity of mechanisms that may modify fatty acid compositions of plasma or tissues. We carried out an extensive literature survey of gene × diet interaction in the regulation of fatty acid compositions. Most of the related studies have been observational studies, but there are also a few intervention trials that tend to confirm that true interactions exist. Most of the studies deal with the desaturase enzyme cluster (FADS1, FADS2) in chromosome 11 and elongase enzymes. We expect that new genetic variants are being found that are linked with the genetic regulation of plasma or tissue fatty acid composition. This information is of great help to understanding the contribution of dietary fatty acids and their endogenic metabolism to the development of some chronic diseases.
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Affiliation(s)
- Maria Lankinen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70211 Kuopio, Finland.
| | - Matti Uusitupa
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70211 Kuopio, Finland.
| | - Ursula Schwab
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70211 Kuopio, Finland.
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, 70210 Kuopio, Finland.
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11
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Chilton FH, Dutta R, Reynolds LM, Sergeant S, Mathias RA, Seeds MC. Precision Nutrition and Omega-3 Polyunsaturated Fatty Acids: A Case for Personalized Supplementation Approaches for the Prevention and Management of Human Diseases. Nutrients 2017; 9:E1165. [PMID: 29068398 PMCID: PMC5707637 DOI: 10.3390/nu9111165] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/07/2017] [Accepted: 10/19/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Dietary essential omega-6 (n-6) and omega-3 (n-3) 18 carbon (18C-) polyunsaturated fatty acids (PUFA), linoleic acid (LA) and α-linolenic acid (ALA), can be converted (utilizing desaturase and elongase enzymes encoded by FADS and ELOVL genes) to biologically-active long chain (LC; >20)-PUFAs by numerous cells and tissues. These n-6 and n-3 LC-PUFAs and their metabolites (ex, eicosanoids and endocannabinoids) play critical signaling and structural roles in almost all physiologic and pathophysiologic processes. METHODS This review summarizes: (1) the biosynthesis, metabolism and roles of LC-PUFAs; (2) the potential impact of rapidly altering the intake of dietary LA and ALA; (3) the genetics and evolution of LC-PUFA biosynthesis; (4) Gene-diet interactions that may lead to excess levels of n-6 LC-PUFAs and deficiencies of n-3 LC-PUFAs; and (5) opportunities for precision nutrition approaches to personalize n-3 LC-PUFA supplementation for individuals and populations. CONCLUSIONS The rapid nature of transitions in 18C-PUFA exposure together with the genetic variation in the LC-PUFA biosynthetic pathway found in different populations make mal-adaptations a likely outcome of our current nutritional environment. Understanding this genetic variation in the context of 18C-PUFA dietary exposure should enable the development of individualized n-3 LC-PUFA supplementation regimens to prevent and manage human disease.
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Affiliation(s)
- Floyd H Chilton
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
| | - Rahul Dutta
- Department of Urology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
| | - Lindsay M Reynolds
- Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
| | - Susan Sergeant
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
| | - Rasika A Mathias
- GeneSTAR Research Program, General Internal Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21224, USA.
| | - Michael C Seeds
- Department of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
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12
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May-Wilson S, Sud A, Law PJ, Palin K, Tuupanen S, Gylfe A, Hänninen UA, Cajuso T, Tanskanen T, Kondelin J, Kaasinen E, Sarin AP, Eriksson JG, Rissanen H, Knekt P, Pukkala E, Jousilahti P, Salomaa V, Ripatti S, Palotie A, Renkonen-Sinisalo L, Lepistö A, Böhm J, Mecklin JP, Al-Tassan NA, Palles C, Farrington SM, Timofeeva MN, Meyer BF, Wakil SM, Campbell H, Smith CG, Idziaszczyk S, Maughan TS, Fisher D, Kerr R, Kerr D, Passarelli MN, Figueiredo JC, Buchanan DD, Win AK, Hopper JL, Jenkins MA, Lindor NM, Newcomb PA, Gallinger S, Conti D, Schumacher F, Casey G, Aaltonen LA, Cheadle JP, Tomlinson IP, Dunlop MG, Houlston RS. Pro-inflammatory fatty acid profile and colorectal cancer risk: A Mendelian randomisation analysis. Eur J Cancer 2017; 84:228-238. [PMID: 28829991 PMCID: PMC5630201 DOI: 10.1016/j.ejca.2017.07.034] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 07/20/2017] [Accepted: 07/22/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND While dietary fat has been established as a risk factor for colorectal cancer (CRC), associations between fatty acids (FAs) and CRC have been inconsistent. Using Mendelian randomisation (MR), we sought to evaluate associations between polyunsaturated (PUFA), monounsaturated (MUFA) and saturated FAs (SFAs) and CRC risk. METHODS We analysed genotype data on 9254 CRC cases and 18,386 controls of European ancestry. Externally weighted polygenic risk scores were generated and used to evaluate associations with CRC per one standard deviation increase in genetically defined plasma FA levels. RESULTS Risk reduction was observed for oleic and palmitoleic MUFAs (OROA = 0.77, 95% CI: 0.65-0.92, P = 3.9 × 10-3; ORPOA = 0.36, 95% CI: 0.15-0.84, P = 0.018). PUFAs linoleic and arachidonic acid had negative and positive associations with CRC respectively (ORLA = 0.95, 95% CI: 0.93-0.98, P = 3.7 × 10-4; ORAA = 1.05, 95% CI: 1.02-1.07, P = 1.7 × 10-4). The SFA stearic acid was associated with increased CRC risk (ORSA = 1.17, 95% CI: 1.01-1.35, P = 0.041). CONCLUSION Results from our analysis are broadly consistent with a pro-inflammatory FA profile having a detrimental effect in terms of CRC risk.
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Affiliation(s)
- Sebastian May-Wilson
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SW7 3RP, UK
| | - Amit Sud
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SW7 3RP, UK
| | - Philip J Law
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SW7 3RP, UK
| | - Kimmo Palin
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Sari Tuupanen
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Alexandra Gylfe
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Ulrika A Hänninen
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Tatiana Cajuso
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Tomas Tanskanen
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Johanna Kondelin
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Eevi Kaasinen
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Antti-Pekka Sarin
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, 00014, Finland
| | - Johan G Eriksson
- National Institute for Health and Welfare, Helsinki, 00271, Finland; Folkhälsan Research Centre, Helsinki, 00250, Finland; Unit of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, Helsinki, 00014, Finland
| | - Harri Rissanen
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Paul Knekt
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Eero Pukkala
- Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer Research, Helsinki, 00130, Finland; School of Health Sciences, University of Tampere, Tampere, 33014, Finland
| | - Pekka Jousilahti
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Veikko Salomaa
- National Institute for Health and Welfare, Helsinki, 00271, Finland
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, 00014, Finland; Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1SA, UK; Department of Public Health, University of Helsinki, Helsinki, 00014, Finland
| | - Aarno Palotie
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, 00014, Finland; Analytic and Translational Genetics Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA; Program in Medical and Population Genetics, The Broad Institute of MIT and Harvard, Cambridge, MA, 02142, USA; Department of Neurology, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Laura Renkonen-Sinisalo
- Abdominal Center, Department of Surgery, Helsinki University Hospital, Helsinki, 00029, Finland
| | - Anna Lepistö
- Abdominal Center, Department of Surgery, Helsinki University Hospital, Helsinki, 00029, Finland
| | - Jan Böhm
- Department of Pathology, Central Finland Central Hospital, Jyväskylä, 40620, Finland
| | - Jukka-Pekka Mecklin
- Department of Surgery, Jyväskylä Central Hospital, University of Eastern Finland, Jyväskylä, 40620, Finland
| | - Nada A Al-Tassan
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, 12713, Saudi Arabia
| | - Claire Palles
- Molecular & Population Genetics Laboratory, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Susan M Farrington
- Colon Cancer Genetics Group, University of Edinburgh and MRC Human Genetics Unit, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Maria N Timofeeva
- Colon Cancer Genetics Group, University of Edinburgh and MRC Human Genetics Unit, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Brian F Meyer
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, 12713, Saudi Arabia
| | - Salma M Wakil
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, 12713, Saudi Arabia
| | - Harry Campbell
- Centre for Population Health Sciences, University of Edinburgh, Edinburgh, EH8 9AG, UK
| | - Christopher G Smith
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - Shelley Idziaszczyk
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - Timothy S Maughan
- CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, OX3 7DQ, UK
| | - David Fisher
- MRC Clinical Trials Unit, Aviation House, London, WC2B 6NH, UK
| | - Rachel Kerr
- Oxford Cancer Centre, Department of Oncology, University of Oxford, Churchill Hospital, Oxford, OX3 7LE, UK
| | - David Kerr
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DU, UK
| | - Michael N Passarelli
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, Lebanon, NH, 03756, USA
| | - Jane C Figueiredo
- Samuel Oschin Comprehensive Cancer Center, Cedars-Sinai Medical Center, Los Angeles, CA, USA; Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Daniel D Buchanan
- Colorectal Oncogenomics Group, Genetic Epidemiology Laboratory, Department of Pathology, The University of Melbourne, Victoria, 3010, Australia; Centre for Epidemiology and Biostatistics, The University of Melbourne, Victoria, 3010, Australia
| | - Aung K Win
- Centre for Epidemiology and Biostatistics, The University of Melbourne, Victoria, 3010, Australia
| | - John L Hopper
- Centre for Epidemiology and Biostatistics, The University of Melbourne, Victoria, 3010, Australia
| | - Mark A Jenkins
- Centre for Epidemiology and Biostatistics, The University of Melbourne, Victoria, 3010, Australia
| | - Noralane M Lindor
- Department of Health Sciences Research, Mayo Clinic, Scottsdale, AZ, 85259, USA
| | - Polly A Newcomb
- Cancer Prevention Program, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Steven Gallinger
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada
| | - David Conti
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Fred Schumacher
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - Graham Casey
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908, USA
| | - Lauri A Aaltonen
- Genome-Scale Biology Research Program, Research Programs Unit, University of Helsinki, Helsinki, 00014, Finland; Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - Jeremy P Cheadle
- Division of Cancer and Genetics, School of Medicine, Cardiff University, Cardiff, CF14 4XN, UK
| | - Ian P Tomlinson
- Molecular & Population Genetics Laboratory, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK
| | - Malcolm G Dunlop
- Colon Cancer Genetics Group, University of Edinburgh and MRC Human Genetics Unit, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Richard S Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, SW7 3RP, UK.
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13
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Rahbar E, Ainsworth HC, Howard TD, Hawkins GA, Ruczinski I, Mathias R, Seeds MC, Sergeant S, Hixson JE, Herrington DM, Langefeld CD, Chilton FH. Uncovering the DNA methylation landscape in key regulatory regions within the FADS cluster. PLoS One 2017; 12:e0180903. [PMID: 28957329 PMCID: PMC5619705 DOI: 10.1371/journal.pone.0180903] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/22/2017] [Indexed: 12/16/2022] Open
Abstract
Genetic variants near and within the fatty acid desaturase (FADS) cluster are associated with polyunsaturated fatty acid (PUFA) biosynthesis, levels of several disease biomarkers and risk of human disease. However, determining the functional mechanisms by which these genetic variants impact PUFA levels remains a challenge. Utilizing an Illumina 450K array, we previously reported strong allele-specific methylation (ASM) associations (p = 2.69×10−29) between a single nucleotide polymorphism (SNP) rs174537 and DNA methylation of CpG sites located in the putative enhancer region between FADS1 and FADS2, in human liver tissue. However, this array only featured 20 CpG sites within this 12kb region. To better understand the methylation landscape within this region, we conducted bisulfite sequencing of the region between FADS1 and FADS2. Liver tissues from 50 male subjects (27 European Americans, 23 African Americans) were obtained from the Pathobiological Determinants of Atherosclerosis in Youth (PDAY) study, and used to ascertain the genotype at rs174537 and methylation status across the region of interest. Associations between rs174537 genotype and methylation status of 136 CpG sites were determined. Age-adjusted linear regressions were used to assess ASM associations with rs174537 genotype. The majority of CpG sites (117 out of 136, 86%) exhibited high levels of methylation with the greatest variability observed at three key regulatory regions–the promoter regions for FADS1 and FADS2 and a putative enhancer site between the two genes. Eight CpG sites within the putative enhancer region displayed significant (FDR p <0.05) ASM associations with rs174537. These data support the concept that both genetic and epigenetic factors regulate PUFA biosynthesis, and raise fundamental questions as to how genetic variants such as rs174537 impact DNA methylation in distant regulatory regions, and ultimately the capacity of tissues to synthesize PUFAs.
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Affiliation(s)
- Elaheh Rahbar
- Department of Biomedical Engineering, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
- * E-mail: (ER); (FHC)
| | - Hannah C. Ainsworth
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Timothy D. Howard
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Gregory A. Hawkins
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Ingo Ruczinski
- Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States of America
| | - Rasika Mathias
- Division of Allergy and Clinical Immunology Department of Medicine, The Johns Hopkins University, Baltimore, MD, United States of America
| | - Michael C. Seeds
- Department of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Susan Sergeant
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - James E. Hixson
- Department of Epidemiology, Human Genetics and Environmental Sciences, Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, United States of America
| | - David M. Herrington
- Department of Internal Medicine, Division of Cardiology, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Carl D. Langefeld
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
| | - Floyd H. Chilton
- Department of Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC, United States of America
- * E-mail: (ER); (FHC)
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14
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Wang P, Sun M, Ren J, Djuric Z, Fisher GJ, Wang X, Li Y. Gas chromatography-mass spectrometry analysis of effects of dietary fish oil on total fatty acid composition in mouse skin. Sci Rep 2017; 7:42641. [PMID: 28195161 PMCID: PMC5307384 DOI: 10.1038/srep42641] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 01/09/2017] [Indexed: 12/17/2022] Open
Abstract
Altering the fatty acid (FA) composition in the skin by dietary fish oil could provide therapeutic benefits. Although it has been shown that fish oil supplementation enhances EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) abundance in the skin, comprehensive skin FA profiling is needed. We established a gas chromatography-mass spectrometry method, which allows precise quantification of FA profile using small (<24 mm2 for mice and <12 mm2 for humans) skin specimens that can be readily obtained from live mice and humans. We determined mouse skin FA composition after 2, 4 and 8 weeks of consuming a control diet or a diet supplemented with fish oil. Fish oil markedly enhanced EPA and DHA in mouse skin within 2 weeks, and this increase plateaued after 4 weeks. The FA composition in mouse skin was different from that of serum, indicating that skin has homeostatic control of FA metabolism. Mice fed the control diet designed to simulate Western human diet displayed similar skin FA composition as that of humans. The present study presents a validated method for FA quantification that is needed to investigate the mechanisms of actions of dietary treatments in both mouse and human skin.
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Affiliation(s)
- Peiru Wang
- Department of Dermatology, University of Michigan, Ann Arbor, MI, USA.,Department of photomedicine, Shanghai Dermatology Hospital, China
| | - Min Sun
- Department of Dermatology, University of Michigan, Ann Arbor, MI, USA
| | - Jianwei Ren
- Department of Family Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Zora Djuric
- Department of Family Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Gary J Fisher
- Department of Dermatology, University of Michigan, Ann Arbor, MI, USA
| | - Xiuli Wang
- Department of photomedicine, Shanghai Dermatology Hospital, China
| | - Yong Li
- Department of Dermatology, University of Michigan, Ann Arbor, MI, USA
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15
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The impact of fatty acid desaturase genotype on fatty acid status and cardiovascular health in adults. Proc Nutr Soc 2016; 76:64-75. [DOI: 10.1017/s0029665116000732] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The aim of this review was to determine the impact of the fatty acid desaturase (FADS) genotype on plasma and tissue concentrations of the long-chain (LC) n-3 PUFA, including EPA and DHA, which are associated with the risk of several diet-related chronic diseases, including CVD. In addition to dietary intakes, which are low for many individuals, tissue EPA and DHA are also influenced by the rate of bioconversion from α-linolenic acid (αLNA). Δ-5 and Δ-6 desaturase enzymes, encoded for by FADS1 and FADS2 genes, are key desaturation enzymes involved in the bioconversion of essential fatty acids (αLNA and linoleic acid (LA)) to longer chained PUFA. In general, carriers of FADS minor alleles tend to have higher habitual plasma and tissue levels of LA and αLNA, and lower levels of arachidonic acid, EPA and also to a lesser extent DHA. In conclusion, available research findings suggest that FADS minor alleles are also associated with reduced inflammation and CVD risk, and that dietary total fat and fatty acid intake have the potential to modify relationships between FADS gene variants and circulating fatty acid levels. However to date, neither the size-effects of FADS variants on fatty acid status, nor the functional SNP in FADS1 and 2 have been identified. Such information could contribute to the refinement and targeting of EPA and DHA recommendations, whereby additional LC n-3 PUFA intakes could be recommended for those carrying FADS minor alleles.
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16
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Basson A, Trotter A, Rodriguez-Palacios A, Cominelli F. Mucosal Interactions between Genetics, Diet, and Microbiome in Inflammatory Bowel Disease. Front Immunol 2016; 7:290. [PMID: 27531998 PMCID: PMC4970383 DOI: 10.3389/fimmu.2016.00290] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/19/2016] [Indexed: 12/12/2022] Open
Abstract
Numerous reviews have discussed gut microbiota composition changes during inflammatory bowel diseases (IBD), particularly Crohn’s disease (CD). However, most studies address the observed effects by focusing on studying the univariate connection between disease and dietary-induced alterations to gut microbiota composition. The possibility that these effects may reflect a number of other interconnected (i.e., pantropic) mechanisms, activated in parallel, particularly concerning various bacterial metabolites, is in the process of being elucidated. Progress seems, however, hampered by various difficult-to-study factors interacting at the mucosal level. Here, we highlight some of such factors that merit consideration, namely: (1) the contribution of host genetics and diet in altering gut microbiome, and in turn, the crosstalk among secondary metabolic pathways; (2) the interdependence between the amount of dietary fat, the fatty acid composition, the effects of timing and route of administration on gut microbiota community, and the impact of microbiota-derived fatty acids; (3) the effect of diet on bile acid composition, and the modulator role of bile acids on the gut microbiota; (4) the impact of endogenous and exogenous intestinal micronutrients and metabolites; and (5) the need to consider food associated toxins and chemicals, which can introduce confounding immune modulating elements (e.g., antioxidant and phytochemicals in oils and proteins). These concepts, which are not mutually exclusive, are herein illustrated paying special emphasis on physiologically inter-related processes.
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Affiliation(s)
- Abigail Basson
- Digestive Health Research Institute, Case Western Reserve University , Cleveland, OH , USA
| | - Ashley Trotter
- Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Case Medical Center, Cleveland, OH, USA
| | | | - Fabio Cominelli
- Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Case Medical Center, Cleveland, OH, USA
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17
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Cancer Risk and Eicosanoid Production: Interaction between the Protective Effect of Long Chain Omega-3 Polyunsaturated Fatty Acid Intake and Genotype. J Clin Med 2016; 5:jcm5020025. [PMID: 26891335 PMCID: PMC4773781 DOI: 10.3390/jcm5020025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Revised: 01/15/2016] [Accepted: 02/02/2016] [Indexed: 01/11/2023] Open
Abstract
Dietary inclusion of fish and fish supplements as a means to improve cancer prognosis and prevent tumour growth is largely controversial. Long chain omega-3 polyunsaturated fatty acids (LCn-3 PUFA), eicosapentaenoic acid and docosahexaenoic acid, may modulate the production of inflammatory eicosanoids, thereby influencing local inflammatory status, which is important in cancer development. Although in vitro studies have demonstrated inhibition of tumour cell growth and proliferation by LCn-3 PUFA, results from human studies have been mainly inconsistent. Genes involved in the desaturation of fatty acids, as well as the genes encoding enzymes responsible for eicosanoid production, are known to be implicated in tumour development. This review discusses the current evidence for an interaction between genetic polymorphisms and dietary LCn-3 PUFA in the risk for breast, prostate and colorectal cancers, in regards to inflammation and eicosanoid synthesis.
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18
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Takkunen MJ, de Mello VD, Schwab US, Kuusisto J, Vaittinen M, Ågren JJ, Laakso M, Pihlajamäki J, Uusitupa MIJ. Gene-diet interaction of a common FADS1
variant with marine polyunsaturated fatty acids for fatty acid composition in plasma and erythrocytes among men. Mol Nutr Food Res 2015; 60:381-9. [DOI: 10.1002/mnfr.201500594] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 09/13/2015] [Accepted: 09/29/2015] [Indexed: 01/12/2023]
Affiliation(s)
- Markus J. Takkunen
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
| | - Vanessa D. de Mello
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
| | - Ursula S. Schwab
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
- Clinical Nutrition and Obesity Center; Kuopio University Hospital; Kuopio Finland
| | - Johanna Kuusisto
- Department of Medicine; University of Eastern Finland and Kuopio University Hospital; Kuopio Finland
| | - Maija Vaittinen
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
| | - Jyrki J. Ågren
- Institute of Biomedicine; University of Eastern Finland; Kuopio Finland
| | - Markku Laakso
- Department of Medicine; University of Eastern Finland and Kuopio University Hospital; Kuopio Finland
| | - Jussi Pihlajamäki
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
- Clinical Nutrition and Obesity Center; Kuopio University Hospital; Kuopio Finland
| | - Matti I. J. Uusitupa
- Institute of Public Health and Clinical Nutrition; Faculty of Health Sciences; University of Eastern Finland; Kuopio Finland
- Research Unit; Kuopio University Hospital; Kuopio Finland
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Omega-3 Polyunsaturated Fatty Acids: The Way Forward in Times of Mixed Evidence. BIOMED RESEARCH INTERNATIONAL 2015; 2015:143109. [PMID: 26301240 PMCID: PMC4537707 DOI: 10.1155/2015/143109] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/18/2015] [Accepted: 05/28/2015] [Indexed: 12/18/2022]
Abstract
Almost forty years ago, it was first hypothesized that an increased dietary intake of omega-3 polyunsaturated fatty acids (PUFA) from fish fat could exert protective effects against several pathologies. Decades of intense preclinical investigation have supported this hypothesis in a variety of model systems. Several clinical cardiovascular studies demonstrated the beneficial health effects of omega-3 PUFA, leading medical institutions worldwide to publish recommendations for their increased intake. However, particularly in recent years, contradictory results have been obtained in human studies focusing on cardiovascular disease and the clinical evidence in other diseases, particularly chronic inflammatory and neoplastic diseases, was never established to a degree that led to clear approval of treatment with omega-3 PUFA. Recent data not in line with the previous findings have sparked a debate on the health efficacy of omega-3 PUFA and the usefulness of increasing their intake for the prevention of a number of pathologies. In this review, we aim to examine the controversies on the possible use of these fatty acids as preventive/curative tools against the development of cardiovascular, metabolic, and inflammatory diseases, as well as several kinds of cancer.
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Mathias RA, Pani V, Chilton FH. Genetic Variants in the FADS Gene: Implications for Dietary Recommendations for Fatty Acid Intake. Curr Nutr Rep 2014; 3:139-148. [PMID: 24977108 DOI: 10.1007/s13668-014-0079-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Unequivocally, genetic variants within the fatty acid desaturase (FADS) cluster are determinants of long chain polyunsaturated fatty acid (LC-PUFA) levels in circulation, cells and tissues. A recent series of papers have addressed these associations in the context of ancestry; evidence clearly supports that the associations are robust to ethnicity. However ∼80% of African Americans carry two copies of the alleles associated with increased levels of arachidonic acid, compared to only ∼45% of European Americans raising important questions of whether gene-PUFA interactions induced by a modern western diet are differentially driving the risk of diseases of inflammation in diverse populations, and are these interactions leading to health disparities. We highlight an important aspect thus far missing in the debate regarding dietary recommendations; we content that current evidence from genetics strongly suggest that an individual's, or at the very least the population from which an individual is sampled, genetic architecture must be factored into dietary recommendations currently in place.
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Affiliation(s)
- Rasika A Mathias
- Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University, Baltimore, MD 21224, USA
| | - Vrindarani Pani
- Division of Allergy and Clinical Immunology, Department of Medicine, The Johns Hopkins University, Baltimore, MD 21224, USA
| | - Floyd H Chilton
- The Center for Botanical Lipids and Inflammatory Disease Prevention, Wake Forest School of Medicine, Winston-Salem NC, 27157, USA ; Department of Physiology/Pharmacology, Wake Forest School of Medicine, Winston-Salem NC 27157, USA ; Molecular Medicine and Translational Sciences, Wake Forest School of Medicine, Winston-Salem NC 27157, USA
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Correction: Interaction of Fatty Acid Genotype and Diet on Changes in Colonic Fatty Acids in a Mediterranean Diet Intervention Study. Cancer Prev Res (Phila) 2014. [DOI: 10.1158/1940-6207.capr-14-0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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