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Wu X, Jiang L, Qi H, Hu C, Jia X, Lin H, Wang S, Lin L, Zhang Y, Zheng R, Li M, Wang T, Zhao Z, Xu M, Xu Y, Chen Y, Zheng J, Bi Y, Lu J. Brain tissue- and cell type-specific eQTL Mendelian randomization reveals efficacy of FADS1 and FADS2 on cognitive function. Transl Psychiatry 2024; 14:77. [PMID: 38316767 PMCID: PMC10844634 DOI: 10.1038/s41398-024-02784-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 02/07/2024] Open
Abstract
Epidemiological studies suggested an association between omega-3 fatty acids and cognitive function. However, the causal role of the fatty acid desaturase (FADS) gene, which play a key role in regulating omega-3 fatty acids biosynthesis, on cognitive function is unclear. Hence, we used two-sample Mendelian randomization (MR) to estimate the gene-specific causal effect of omega-3 fatty acids (N = 114,999) on cognitive function (N = 300,486). Tissue- and cell type-specific effects of FADS1/FADS2 expression on cognitive function were estimated using brain tissue cis-expression quantitative trait loci (cis-eQTL) datasets (GTEx, N ≤ 209; MetaBrain, N ≤ 8,613) and single cell cis-eQTL data (N = 373), respectively. These causal effects were further evaluated in whole blood cis-eQTL data (N ≤ 31,684). A series of sensitivity analyses were conducted to validate MR assumptions. Leave-one-out MR showed a FADS gene-specific effect of omega-3 fatty acids on cognitive function [β = -1.3 × 10-2, 95% confidence interval (CI) (-2.2 × 10-2, -5 × 10-3), P = 2 × 10-3]. Tissue-specific MR showed an effect of increased FADS1 expression in cerebellar hemisphere and FADS2 expression in nucleus accumbens basal ganglia on maintaining cognitive function, while decreased FADS1 expression in nine brain tissues on maintaining cognitive function [colocalization probability (PP.H4) ranged from 71.7% to 100.0%]. Cell type-specific MR showed decreased FADS1/FADS2 expression in oligodendrocyte was associated with maintaining cognitive function (PP.H4 = 82.3%, respectively). Increased FADS1/FADS2 expression in whole blood showed an effect on cognitive function maintenance (PP.H4 = 86.6% and 88.4%, respectively). This study revealed putative causal effect of FADS1/FADS2 expression in brain tissues and blood on cognitive function. These findings provided evidence to prioritize FADS gene as potential target gene for maintenance of cognitive function.
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Affiliation(s)
- Xueyan Wu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei Jiang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongyan Qi
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chunyan Hu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaojing Jia
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Lin
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuangyuan Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lin Lin
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yifang Zhang
- Network and Information Center, Shanghai Jiao Tong University, Shanghai, China
| | - Ruizhi Zheng
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mian Li
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tiange Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiyun Zhao
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Xu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhong Chen
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Zheng
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai Digital Medicine Innovation Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- MRC Integrative Epidemiology Unit (IEU), Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol, BS8 2BN, UK.
| | - Yufang Bi
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jieli Lu
- Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai National Center for Translational Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Association of Fatty Acid Desaturase 1 rs174547 Polymorphism with the Composition of Long-Chain Polyunsaturated Fatty Acids in Serum Glycerophospholipids during Pregnancy. Nutrients 2023; 15:nu15030722. [PMID: 36771429 PMCID: PMC9919170 DOI: 10.3390/nu15030722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023] Open
Abstract
The increase in fetal requirements of long-chain polyunsaturated fatty acids (LCPUFAs) during pregnancy alters maternal fatty acid metabolism, and therefore, fatty acid desaturase (FADS) gene polymorphisms may change blood fatty acid composition or concentration differently during pregnancy. We investigated the relationship between a FADS1 single-nucleotide polymorphism (SNP) and maternal serum LCPUFA levels in Japanese pregnant women during the first and third trimesters and at delivery. Two hundred and fifty-three pregnant women were included, and fatty acid compositions of glycerophospholipids in serum (weight %) and the FADS1 SNP rs174547 (T/C) were analyzed. LCPUFAs, including arachidonic acid (ARA) and docosahexaenoic acid (DHA), significantly decreased from the first to the third trimester of pregnancy. Furthermore, DHA significantly decreased from the third trimester of pregnancy to delivery. At all gestational stages, linoleic acid (LA) and α-linolenic acid were significantly higher with the number of minor FADS1 SNP alleles, whereas γ-linolenic acid and ARA and the ARA/LA ratio were significantly lower. DHA was significantly lower with the number of minor FADS1 SNP alleles only in the third trimester and at delivery, suggesting that genotype effects become more obvious as pregnancy progresses.
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Chen Y, Rui Y, Wang Y, Zhao M, Liu T, Zhuang J, Feng F. Dietary glycerol monolaurate improves bone growth through the regulation of IGF-1 in the fish model. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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FADS1 and FADS2 Gene Polymorphisms Modulate the Relationship of Omega-3 and Omega-6 Fatty Acid Plasma Concentrations in Gestational Weight Gain: A NISAMI Cohort Study. Nutrients 2022; 14:nu14051056. [PMID: 35268031 PMCID: PMC8912382 DOI: 10.3390/nu14051056] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/22/2022] [Accepted: 02/25/2022] [Indexed: 02/04/2023] Open
Abstract
The polymorphisms of fatty acid desaturase genes FADS1 and FADS2 have been associated with an increase in weight gain. We investigated FADS1 and FADS2 gene polymorphisms and the relation between ω-3 and ω-6 fatty acid plasma concentrations and gestational weight gain. A prospective cohort study of 199 pregnant women was followed in Santo Antônio de Jesus, Brazil. Plasma levels of polyunsaturated fatty acids (PUFAs) were measured at baseline and gestational weight gain during the first, second, and third trimesters. Fatty acid recognition was carried out with the aid of gas chromatography. Single nucleotide polymorphisms (SNPs) were genotyped using real-time PCR. Statistical analyses included Structural Equation Modelling. A direct effect of FADS1 and FADS2 gene polymorphisms on gestational weight was observed; however, only the SNP rs174575 (FADS2) showed a significant positive direct effect on weight over the course of the pregnancy (0.106; p = 0.016). In terms of the influence of SNPs on plasma levels of PUFAs, it was found that SNP rs174561 (FADS1) and SNP rs174575 (FADS2) showed direct adverse effects on plasma concentrations of ω-3 (eicosapentaenoic acid and alpha-linoleic acid), and only SNP rs174575 had positive direct effects on plasma levels of ARA and the ARA/LA (arachidonic acid/linoleic acid) ratio, ω-6 products, while the SNP rs3834458 (FADS2) had an adverse effect on plasma concentrations of EPA, leading to its increase. Pregnant women who were heterozygous and homozygous for the minor allele of the SNP rs3834458 (FADS2), on the other hand, showed larger concentrations of series ω-3 substrates, which indicates a protective factor for women’s health.
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Khodarahmi M, Nikniaz L, Abbasalizad Farhangi M. The Interaction Between Fatty Acid Desaturase-2 (FADS2) rs174583 Genetic Variant and Dietary Quality Indices (DASH and MDS) Constructs Different Metabolic Phenotypes Among Obese Individuals. Front Nutr 2021; 8:669207. [PMID: 34164423 PMCID: PMC8215104 DOI: 10.3389/fnut.2021.669207] [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: 02/18/2021] [Accepted: 04/22/2021] [Indexed: 01/02/2023] Open
Abstract
Background and Aim: Genetic variation in fatty acid desaturases (FADS) has previously been linked to several diet-related diseases. We aimed to determine whether the FADS2 rs174583 variant interacts with the Dietary Approach to Stop Hypertension (DASH) score and Mediterranean dietary score (MDS) to influence cardio-metabolic risk factors among obese adults. Methods: This cross-sectional study was performed among 347 apparently healthy obese adults (aged 20-50 years). Dietary quality indicator scores (DASH and MDS) were generated using a validated 147-item Food Frequency Questionnaire (FFQ). The FADS2 rs174583 variant was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The gene-diet interaction was analyzed by the ANCOVA multivariate interaction model. Results: A significant interaction was observed between rs174583 and adherence to the DASH score in relation to serum triglyceride (TG) concentration among the female group (P Interaction = 0.046); CT-genotype carriers who were assigned to the second tertile of DASH compared with those in the first tertile had a lower TG level (P < 0.05). Another significant interaction was revealed between adherence to MDS score and rs174583 polymorphism on serum glucose levels (P Interaction = 0.044); the lowest mean of glucose level was observed in homozygous minor subjects (TT) in the third tertile of MDS, in comparison with other tertiles of this dietary index (P < 0.05). There was a similar significant interaction between DASH and rs174583 in relation to diastolic blood pressure (P Interaction = 0.038) among the male group. Additionally, a significant positive association was found between TT genotype and odds of having high TG both in the crude (OR, 3.21; 95% CI, 1.02-10.14) and adjusted (OR, 3.58; 95% CI, 1.07-11.97) models, taking into account different confounders. Conclusion: Adherence to the dietary quality indicators (DASH and MDS) modified the relationship between FADS2 rs174583 polymorphism and cardio-metabolic risk factors in obese subjects. Prospective cohort studies are needed to confirm the results of our study.
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Affiliation(s)
- Mahdieh Khodarahmi
- Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Nikniaz
- Tabriz Health Services Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mahdieh Abbasalizad Farhangi
- Department of Community Nutrition, Faculty of Nutrition and Food Science, Tabriz University of Medical Sciences, Tabriz, Iran
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Julvez J, Fernández-Barrés S, Gignac F, López-Vicente M, Bustamante M, Garcia-Esteban R, Vioque J, Llop S, Ballester F, Fernández-Somoano A, Tardón A, Vrijheid M, Tonne C, Ibarluzea J, Irazabal A, Sebastian-Galles N, Burgaleta M, Romaguera D, Sunyer J. Maternal seafood consumption during pregnancy and child attention outcomes: a cohort study with gene effect modification by PUFA-related genes. Int J Epidemiol 2021; 49:559-571. [PMID: 31578044 DOI: 10.1093/ije/dyz197] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/12/2019] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND There is a need to test the fetal programming theoretical framework in nutritional epidemiology. We evaluated whether maternal seafood intake during pregnancy was associated with 8-year-old attention outcomes after adjusting for previous child seafood intake and cognitive function. We also explored effect modification by several single nucleotide polymorphisms (SNPs) related with polyunsaturated fatty acid (PUFA) metabolism. METHODS Our final analyses included 1644 mother-child pairs from the prospective INMA (INfancia y Medio Ambiente) cohort study (Spain, recruitment between 2003 and 2008). We used food frequency questionnaires to assess prenatal and postnatal seafood consumption of the mother-child pairs. We evaluated attention function of the children through the computer-based Attention Network Test (ANT) and we used the number of omission errors and the hit reaction time standard error (HRT-SE). Parents reported child attention deficit hyperactivity disorder (ADHD) symptoms using the Revised Conners' Parent Rating Scale Short Form (CPRS-R: S). We measured seven candidate SNPs in a subsample of 845 children. We estimated associations using regression models, adjusting for family characteristics, child seafood intake and cognitive functions at early ages, and to explore SNP effect modifications. RESULTS Higher total seafood intake during early pregnancy was associated with a reduction of child ANT omission errors, 5th quintile (median = 854 g/week) vs 1st quintile (median = 195 g/week), incidence risk ratio (IRR) 0.76; 95% CI = 0.61, 0.94. Similar results were observed after adjusting the models for child seafood intake and previous cognitive status. Lean, large and small fatty fish showed similar results, and generally similar but less robust associations were observed with the other attention outcomes. Shellfish and canned tuna showed weaker associations. The association patterns were weaker in late pregnancy and null in child seafood consumption. Child rs1260326 (glucokinase regulator, GCKR) and child/maternal rs2281591 (fatty acid elongase 2, ELOVL2) polymorphisms showed nominal P-value for interactions <0.10 between total seafood intake and ANT outcomes. CONCLUSIONS After adjusting for previous child cognitive functions and child seafood intake, high pregnancy consumption (total, lean, small and large fatty fish) was independently associated with improvements of some 8-year-old attention outcomes. Genetic effect modification analyses suggest PUFA intake from seafood as a potential biological mechanism of such association.
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Affiliation(s)
- Jordi Julvez
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia, Spain.,Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | | | - Florence Gignac
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain
| | - Mónica López-Vicente
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia, Spain
| | - Mariona Bustamante
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain
| | - Raquel Garcia-Esteban
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia, Spain
| | - Jesús Vioque
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Nutritional Epidemiology Unit, Universidad Miguel Hernández, ISABIAL-FISABIO, Alicante, Spain
| | - Sabrina Llop
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain
| | - Ferran Ballester
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain.,Department of Nursing, University of Valencia, València, Spain
| | - Ana Fernández-Somoano
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,IUOPA-Departamento de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Adonina Tardón
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,IUOPA-Departamento de Medicina, Universidad de Oviedo, Oviedo, Spain
| | - Martine Vrijheid
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia, Spain
| | - Cathryn Tonne
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain
| | - Jesus Ibarluzea
- CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Public Health Department, Basque Government, San Sebastian, Spain.,University of the Basque Country (UPV/EHU), School of Psychology, San Sebastian, Spain.,BIODONOSTIA Health Research Institute, San Sebastian, Spain
| | - Amaia Irazabal
- BIODONOSTIA Health Research Institute, San Sebastian, Spain
| | - Nuria Sebastian-Galles
- Center for Brain and Cognition, Department of Technology, Universitat Pompeu Fabra, Barcelona, Spain
| | - Miguel Burgaleta
- Center for Brain and Cognition, Department of Technology, Universitat Pompeu Fabra, Barcelona, Spain
| | - Dora Romaguera
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Instituto de Investigación Sanitaria Illes Balears (IdISBa), Hospital Universitari Son Espases, Palma de Mallorca, Spain
| | - Jordi Sunyer
- Barcelona Institute for Global Health (ISGlobal), Barcelona, Catalonia, Spain.,CIBER Epidemiologia y Salud Pública (CIBERESP), Madrid, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia, Spain
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Khamlaoui W, Mehri S, Hammami S, Hammouda S, Chraeif I, Elosua R, Hammami M. Association Between Genetic Variants in FADS1-FADS2 and ELOVL2 and Obesity, Lipid Traits, and Fatty Acids in Tunisian Population. Clin Appl Thromb Hemost 2021; 26:1076029620915286. [PMID: 32584610 PMCID: PMC7427023 DOI: 10.1177/1076029620915286] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to determine whether genetic variants in FADS1/FADS2 and ELOVL2 are associated with overweight–obesity and body mass index (BMI) and to assess the association between these genetic variants and lipid profile and fatty acid levels. A total of 259 overweight–obese patients were compared to 369 healthy controls. FADS1, FADS2, and ELOVL2 genes were associated with BMI and overweight–obesity (P ≤ .001). In an additive model, the C allele in each of these variants was associated with a lower BMI: −1.18, −0.90, and −1.23 units, respectively. Higher amounts of total cholesterol, low-density lipoprotein cholesterol, total saturated fatty acids (lauric [12:0], myristic [C14:0], palmitic [C16:0], stearic [C18:0], arachidic [20:0], lignoceric [24:0]), monounsaturated fatty acids (myristoleic [C14:1], erucic [C22:1 n-9]), and polyunsaturated fatty acids (α-linolenic [ALA, 18:3 n-3], docosahexaenoic [DHA, C22:6 n-3], eicosapentaenoic acid [EPA, C20:5n-3], arachidonic acid [AA, 20:4n-6], and conjugated linolenic acids [CLA1 and CLA2]) were shown in patients. A significant increase in D6D activities presented by 20:4n-6/18:2n-6 and 18:3n-6/18:2n-6, Δ9 desaturase (D9D) activity, estimated by the ratio 18:1n-9/18:0 and elongase activities (AE), and estimated by the ratio of docosatetraenoic/AA and DPA/EPA in patients. The C minor allele of FADS1 had significantly lower DHA. A significant decrease in stearic acid, EPA, and AE activity (docosatetraenoic/AA) was revealed in patients with the minor allele carriers of FADS2. The C minor allele of ELOVL2 had significantly lower ALA, EPA, DPA, and D6D activity (C20:4 n-6/C18:2n-6). These data suggest that variations in FADS1, FADS2, and ELOVL2 affect the risk of overweight–obesity and the level of circulating fatty acids and could point to a key molecular pathway of metabolic syndrome and its related comorbidities.
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Affiliation(s)
- Wided Khamlaoui
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia
| | - Sounira Mehri
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia
| | - Sonia Hammami
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia.,Department of Internal Medicine, CHU F. Bourguiba, Monastir, Tunisia
| | - Souha Hammouda
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia
| | - Imed Chraeif
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia
| | - Roberto Elosua
- Cardiovascular Epidemiology and Genetics, Institute Hospital del Mar d'Investigacions Mediques, Barcelona, Spain
| | - Mohamed Hammami
- Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health," Faculty of Medicine, University of Monastir, Tunisia
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Maternal and child fatty acid desaturase genotype as determinants of cord blood long-chain PUFA (LCPUFA) concentrations in the Seychelles Child Development Study. Br J Nutr 2021; 126:1687-1697. [PMID: 33526157 DOI: 10.1017/s0007114521000441] [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: 11/07/2022]
Abstract
Optimal maternal long-chain PUFA (LCPUFA) status is essential for the developing fetus. The fatty acid desaturase (FADS) genes are involved in the endogenous synthesis of LCPUFA. The minor allele of various FADS SNP have been associated with increased maternal concentrations of the precursors linoleic acid (LA) and α-linolenic acid (ALA), and lower concentrations of arachidonic acid (AA) and DHA. There is limited research on the influence of FADS genotype on cord PUFA status. The current study investigated the influence of maternal and child genetic variation in FADS genotype on cord blood PUFA status in a high fish-eating cohort. Cord blood samples (n 1088) collected from the Seychelles Child Development Study (SCDS) Nutrition Cohort 2 (NC2) were analysed for total serum PUFA. Of those with cord PUFA data available, maternal (n 1062) and child (n 916), FADS1 (rs174537 and rs174561), FADS2 (rs174575), and FADS1-FADS2 (rs3834458) were determined. Regression analysis determined that maternal minor allele homozygosity was associated with lower cord blood concentrations of DHA and the sum of EPA + DHA. Lower cord blood AA concentrations were observed in children who were minor allele homozygous for rs3834458 (β = 0·075; P = 0·037). Children who were minor allele carriers for rs174537, rs174561, rs174575 and rs3834458 had a lower cord blood AA:LA ratio (P < 0·05 for all). Both maternal and child FADS genotype were associated with cord LCPUFA concentrations, and therefore, the influence of FADS genotype was observed despite the high intake of preformed dietary LCPUFA from fish in this population.
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Conway MC, McSorley EM, Mulhern MS, Spence T, Wijngaarden EV, Watson GE, Wahlberg K, Pineda D, Broberg K, Hyland BW, Cobice DF, Strain JJ, Yeates AJ. The influence of fish consumption on serum n-3 polyunsaturated fatty acid (PUFA) concentrations in women of childbearing age: a randomised controlled trial (the iFish Study). Eur J Nutr 2021; 60:1415-1427. [PMID: 32725293 PMCID: PMC7987591 DOI: 10.1007/s00394-020-02326-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/01/2020] [Indexed: 01/28/2023]
Abstract
PURPOSE Long-chain polyunsaturated fatty acids (LCPUFA) can be synthesised endogenously from linoleic acid (LA) and α-linolenic acid (ALA) in a pathway involving the fatty acid desaturase (FADS) genes. Endogenous synthesis is inefficient; therefore, dietary intake of preformed LCPUFA from their richest source of fish is preferred. This study investigated the effect of fish consumption on PUFA concentrations in women of childbearing age while stratifying by FADS genotype. The influence of fish consumption on lipid profile, and markers of inflammation and oxidative stress was also examined. METHODS Healthy women (n = 49) provided a buccal swab which was analysed for FADS2 genotype (rs3834458; T/deletion). Participants were stratified according to genotype and randomised to an intervention group to receive either no fish (n = 18), 1 portion (n = 14) or 2 portions (n = 17) (140 g per portion) of fish per week for a period of 8 weeks. Serum PUFA was analysed at baseline and post-intervention. Lipid profile, and markers of inflammation and oxidative stress were also analysed. RESULTS Participants consuming 2 portions of fish per week had significantly higher concentrations of eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) and total n-3 PUFA, and a lower n-6:n-3 ratio compared to those in the no fish or 1 portion per week group (all p < 0.05). Fish consumption did not have a significant effect on biomarkers of oxidative stress, inflammation and lipid profile in the current study. CONCLUSION Consumption of 2 portions of fish per week has beneficial effects on biological n-3 PUFA concentrations in women of childbearing age; however, no effects on oxidative stress, inflammation or lipid profile were observed. This trial was registered at www.clinicaltrials.gov (NCT03765580), registered December 2018.
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Affiliation(s)
- Marie C. Conway
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
| | - Emeir M. McSorley
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
| | - Maria S. Mulhern
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
| | - Toni Spence
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
| | | | - Gene E. Watson
- School of Medicine and Dentistry, University of Rochester, Rochester, USA
| | - Karin Wahlberg
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Daniela Pineda
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden ,Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Barry W. Hyland
- Mass Spectrometry Centre, Biomedical Sciences Research Institute (BMSRI), Ulster University, Coleraine, Northern Ireland UK
| | - Diego F. Cobice
- Mass Spectrometry Centre, Biomedical Sciences Research Institute (BMSRI), Ulster University, Coleraine, Northern Ireland UK
| | - J. J. Strain
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
| | - Alison J. Yeates
- Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, BT52 1SA Northern Ireland UK
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Abstract
In the present study, we analysed the effects of SNP rs174547 (T/C) in the fatty acid desaturase 1 (FADS1) gene on long-chain PUFA levels. Four databases were searched to retrieve related literature with keywords such as fatty acid (FA), SNP, FADS1 and rs174547. A meta-analysis of the data was performed using Stata12.0 software, including summary statistics, test for heterogeneity, evaluation of publication bias, subgroup analysis and sensitivity analysis. The associations between rs174547 in FADS1 and seven types of FA, and Δ-5 (D5D) and Δ-6 fatty acid desaturase (D6D) activity were assessed based on the pooled results from eleven papers. A total of 3713 individuals (1529 TT and 2184 TC + CC) were included. The results demonstrated that minor C allele carriers of rs174547 had higher linoleic acid (LA; P < 0·001) and α-linolenic acid (P = 0·020) levels, lower γ-linolenic acid (GLA; P = 0·001) and arachidonic acid (P = 0·024) levels, and lower D5D (P = 0·005) and D6D (P = 0·004) activities than the TT genotype group. Stratification analysis showed that minor C allele carriers of rs174547 had higher LA and lower GLA levels and lower D6D activities in plasma (LA, P < 0·001; GLA, P < 0·001; D6D activity, P < 0·001) samples and in Asian populations (LA, P < 0·001; GLA, P = 0·001; D6D activity, P = 0·001) than the TT genotype group. In conclusion, minor C allele carriers of the SNP rs174547 were associated with decreased activity of D5D and D6D.
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11
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Conway MC, McSorley EM, Mulhern MS, Strain JJ, van Wijngaarden E, Yeates AJ. Influence of fatty acid desaturase (FADS) genotype on maternal and child polyunsaturated fatty acids (PUFA) status and child health outcomes: a systematic review. Nutr Rev 2020; 78:627-646. [PMID: 31943072 DOI: 10.1093/nutrit/nuz086] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
CONTEXT Polyunsaturated fatty acids (PUFA) are important during pregnancy for fetal development and child health outcomes. The fatty acid desaturase (FADS) genes also influence PUFA status, with the FADS genes controlling how much product (eg, arachidonic acid, eicosapentaenoic acid, and docosahexaenoic acid) is metabolized from the precursor molecules linoleic acid and α-linolenic acid. OBJECTIVE The current review discusses the influence of FADS genotype on PUFA status of pregnant women, breast milk, and children, and also how FADS may influence child health outcomes. DATA SOURCES The Ovid Medline, Scopus, Embase, Cochrane Library, CINAHL Plus, PubMed and Web of Science databases were searched from their inception to September 2018. DATA EXTRACTION Eligible studies reported FADS genotype and blood concentrations of PUFA during pregnancy, in childhood, breast milk concentrations of PUFA or child health outcomes. DATA ANALYSIS In pregnant and lactating women, minor allele carriers have higher concentrations of linoleic acid and α-linolenic acid, and lower concentrations of arachidonic acid, in blood and breast milk, respectively. In children, FADS genotype influences PUFA status in the same manner and may impact child outcomes such as cognition and allergies; however, the direction of effects for the evidence to date is not consistent. CONCLUSION Further studies are needed to further investigate associations between FADS and outcomes, as well as the diet-gene interaction.
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Affiliation(s)
- Marie C Conway
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - Maria S Mulhern
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - J J Strain
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - Edwin van Wijngaarden
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| | - Alison J Yeates
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Coleraine, Northern Ireland. E. van Wijngaarden is with the School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
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12
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Yeates AJ, Zavez A, Thurston SW, McSorley EM, Mulhern MS, Alhamdow A, Engström K, Wahlberg K, Strain JJ, Watson GE, Myers GJ, Davidson PW, Shamlaye CF, Broberg K, van Wijngaarden E. Maternal Long-Chain Polyunsaturated Fatty Acid Status, Methylmercury Exposure, and Birth Outcomes in a High-Fish-Eating Mother-Child Cohort. J Nutr 2020; 150:1749-1756. [PMID: 32433731 PMCID: PMC7330473 DOI: 10.1093/jn/nxaa131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/06/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Maternal status of long-chain PUFAs (LC-PUFAs) may be related to fetal growth. Maternal fish consumption exposes the mother to the neurotoxicant methylmercury (MeHg), which, in contrast, may restrict fetal growth. OBJECTIVE Our aim was to examine relations between maternal LC-PUFA status at 28 wk and birth outcomes (birth weight, length, and head circumference), controlling for MeHg exposure throughout pregnancy, in the Seychelles Child Development Study Nutrition Cohort 2. Our secondary aim was to examine the influence of maternal variation in genes regulating the desaturation of LC-PUFAs [fatty acid desaturase (FADS)] on birth outcomes. METHODS From nonfasting blood samples collected at 28 wk of gestation, we measured serum total LC-PUFA concentrations and FADS1 (rs174537, rs174561), FADS1-FADS2rs3834458, and FADS2rs174575 genotypes, with hair total mercury concentrations assessed at delivery. Data were available for n = 1236 mother-child pairs. Associations of maternal LC-PUFAs, MeHg, and FADS genotype with birth outcomes were assessed by multiple linear regression models, adjusting for child sex, gestational age, maternal age, BMI, alcohol use, socioeconomic status, and parity. RESULTS In our cohort of healthy mothers, neither maternal LC-PUFA status nor MeHg exposure were significant determinants of birth outcomes. However, when compared with major allele homozygotes, mothers who were heterozygous for the minor allele of FADS1 (rs174537 and rs174561, GT compared with TT, β = 0.205, P = 0.03; TC compared with CC, β = 0.203, P = 0.04) and FADS1-FADS2 (rs3834458, Tdel compared with DelDel, β = 0.197, P = 0.04) had infants with a greater head circumference (all P < 0.05). Homozygosity for the minor allele of FADS2 (rs174575) was associated with a greater birth weight (GG compared with CC, β = 0.109, P = 0.04). CONCLUSIONS In our mother-child cohort, neither maternal LC-PUFA status nor MeHg exposure was associated with birth outcomes. The observed associations of variation in maternal FADS genotype with birth outcomes should be confirmed in other populations.
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Affiliation(s)
- Alison Jayne Yeates
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Alexis Zavez
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Sally W Thurston
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Maria S Mulhern
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Ayman Alhamdow
- Unit of Metals and Health, Institute of Environmental Medicine, Metals and Health, Karolinska Institute, Stockholm, Sweden
| | - Karin Engström
- Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Karin Wahlberg
- Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - J J Strain
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Gene E Watson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Gary J Myers
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Philip W Davidson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Conrad F Shamlaye
- Child Development Centre, Ministry of Health, Victoria, Mahé, Republic of Seychelles
| | - Karin Broberg
- Unit of Metals and Health, Institute of Environmental Medicine, Metals and Health, Karolinska Institute, Stockholm, Sweden.,Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
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13
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Cheatham CL. Nutritional Factors in Fetal and Infant Brain Development. ANNALS OF NUTRITION AND METABOLISM 2020; 75 Suppl 1:20-32. [PMID: 32564018 DOI: 10.1159/000508052] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 02/12/2020] [Indexed: 11/19/2022]
Abstract
Fetal and infant brain development determine the trajectory of the organism across the lifespan. Optimal maternal and infant nutrition during the period of rapid brain development is vital to the integrity of the neural substrate for subsequent lifelong functions. The goal of this review is to educate the reader on the effects of fetal and infant nutrition on the developing human brain. A review of the literature reveals 6 nutrients that have been studied with respect to maternal nutrition and subsequent offspring brain development: folate, iodine, iron, vitamin D, choline, and docosahexaenoic acid (DHA; 22:6n-3). The research is discussed with a focus on the timing of nutrient needs (preconception, prenatally, and postnatally) as well as potential confounding and unobserved variables.
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Affiliation(s)
- Carol L Cheatham
- Department of Psychology and Neuroscience and Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, North Carolina, USA,
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14
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Morton SU, Vyas R, Gagoski B, Vu C, Litt J, Larsen RJ, Kuchan MJ, Lasekan JB, Sutton BP, Grant PE, Ou Y. Maternal Dietary Intake of Omega-3 Fatty Acids Correlates Positively with Regional Brain Volumes in 1-Month-Old Term Infants. Cereb Cortex 2020; 30:2057-2069. [PMID: 31711132 PMCID: PMC8355466 DOI: 10.1093/cercor/bhz222] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/31/2019] [Accepted: 08/22/2019] [Indexed: 01/05/2023] Open
Abstract
Maternal nutrition is an important factor for infant neurodevelopment. However, prior magnetic resonance imaging (MRI) studies on maternal nutrients and infant brain have focused mostly on preterm infants or on few specific nutrients and few specific brain regions. We present a first study in term-born infants, comprehensively correlating 73 maternal nutrients with infant brain morphometry at the regional (61 regions) and voxel (over 300 000 voxel) levels. Both maternal nutrition intake diaries and infant MRI were collected at 1 month of life (0.9 ± 0.5 months) for 92 term-born infants (among them, 54 infants were purely breastfed and 19 were breastfed most of the time). Intake of nutrients was assessed via standardized food frequency questionnaire. No nutrient was significantly correlated with any of the volumes of the 61 autosegmented brain regions. However, increased volumes within subregions of the frontal cortex and corpus callosum at the voxel level were positively correlated with maternal intake of omega-3 fatty acids, retinol (vitamin A) and vitamin B12, both with and without correction for postmenstrual age and sex (P < 0.05, q < 0.05 after false discovery rate correction). Omega-3 fatty acids remained significantly correlated with infant brain volumes after subsetting to the 54 infants who were exclusively breastfed, but retinol and vitamin B12 did not. This provides an impetus for future larger studies to better characterize the effect size of dietary variation and correlation with neurodevelopmental outcomes, which can lead to improved nutritional guidance during pregnancy and lactation.
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Affiliation(s)
- Sarah U Morton
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Rutvi Vyas
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Borjan Gagoski
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Catherine Vu
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Jonathan Litt
- Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA
| | - Ryan J Larsen
- Beckman Institute, University of Illinois at Urbana—Champaign, Urbana, IL 61801, USA
| | | | | | - Brad P Sutton
- Beckman Institute, University of Illinois at Urbana—Champaign, Urbana, IL 61801, USA
- Department of Bioengineering, University of Illinois at Urbana—Champaign, Urbana, IL 61801, USA
| | - P Ellen Grant
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
| | - Yangming Ou
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA 02115, USA
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children’s Hospital, Boston, MA 02115, USA
- Department of Radiology, Boston Children’s Hospital, Boston, MA 02115, USA
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15
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Chen X, Wu Y, Zhang Z, Zheng X, Wang Y, Yu M, Liu G. Effects of the rs3834458 Single Nucleotide Polymorphism in FADS2 on Levels of n-3 Long-chain Polyunsaturated Fatty Acids: A Meta-analysis. Prostaglandins Leukot Essent Fatty Acids 2019; 150:1-6. [PMID: 31487670 DOI: 10.1016/j.plefa.2019.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 08/17/2019] [Accepted: 08/23/2019] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Evaluate the effects of the single nucleotide polymorphism (SNP) rs3834458 in the fatty acid desaturase 2 gene (FADS2) on n-3 long-chain polyunsaturated fatty acid (LC-PUFA) levels using statistical meta-analysis. METHODS Literatures pertaining to the relationship between the SNP rs3834458 and LC-PUFA were retrieved from three electronic databases. Original information was analyzed using RevMan 5.3, including single statistics, test for heterogeneity, summary statistics and evaluation of publication bias. RESULTS In total, five pieces of literature were retrieved and divided into seven trials. We observed that the minor allele (Tdel+deldel) carriers of rs3834458 had higher linolenic acid levels (P < 0.00001) and lower eicosapentaenoic acid (P < 0.00001), docosapentenoic acid (P = 0.005) and docosahexaenoic acid (P < 0.00001) levels compared to those of carrying major allele homozygote (TT). CONCLUSION This meta-analysis indicates that minor allele of rs3834458 in FADS2 may result in lower activity of delta-6 desaturase leading to higher ALA and lower EPA, DPA and DHA in blood.
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Affiliation(s)
- Xueyan Chen
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China; Children's Hospital of Changchun, Changchun, Jilin 130051, China
| | - Yixia Wu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Zilin Zhang
- School of Mathematics, Jilin University, Changchun, Jilin 130012, China
| | - Xiaolei Zheng
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Yan Wang
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Miao Yu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China
| | - Guoliang Liu
- School of Public Health, Jilin University, Chang Chun, Jilin 130021, China.
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16
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Carvalho GQ, Pereira-Santos M, Marcon LD, Louro ID, Peluzio MCG, Santos DB. Maternal polymorphisms in the FADS1 and FADS2 genes modify the association between PUFA ingestion and plasma concentrations of omega-3 polyunsaturated fatty acids. Prostaglandins Leukot Essent Fatty Acids 2019; 150:38-46. [PMID: 31568926 DOI: 10.1016/j.plefa.2019.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 09/09/2019] [Accepted: 09/12/2019] [Indexed: 10/26/2022]
Abstract
There is a lack of studies about polymorphisms in FADS genes in pregnant women. We aimed to verify the interaction between three FADS gene polymorphisms (rs174561; rs174575; rs3834458) and dietary α-linolenic acid (ALA) or linoleic/α-linolenic acid ratio (LA/ALA) and plasma concentrations of omega-3 (n-3) PUFAs in pregnant women. Of the 250 women evaluated, the homozygous for the rs174561 and rs3834458 minor allele had high plasma ALA concentrations at the highest ALA and LA/ALA ratio tertile (p < 0.05). Plasma concentrations of EPA and DHA were not influenced by diet. For the rs174575 SNP, pregnant women who carried the minor allele presented lower proportions of plasma EPA in the second LA/ALA ratio tertile (p < 0.05). Increased dietary intake of ALA and LA/ALA ratio promoted plasma ALA accumulation in homozygotes for the minor allele rs174561 and rs3834458. Moderate intake of LA/ALA ratio may reduce plasma concentration of EPA in pregnants carrying the rs174575 minor allele.
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Affiliation(s)
- G Q Carvalho
- Department of Nutrition, Universidade Federal de Juiz de Fora - Campus Avançado de Governador Valadares, Av. Dr. Raimundo Monteiro Rezende, 330 - Centro, CEP: 35.010-177, Governador Valadares, MG - Brazil.
| | - M Pereira-Santos
- Collective Health Institute, Universidade Federal da Bahia, Brazil; Institute of Public Health, Universidade Federal da Bahia, Brazil
| | - L D Marcon
- Nutrition and Health Department, Universidade Federal de Viçosa, Brazil
| | - I D Louro
- Center of Human and Molecular Genetics, Universidade Federal do Espírito Santo, Brazil
| | - M C G Peluzio
- Nutrition and Health Department, Universidade Federal de Viçosa, Brazil
| | - D B Santos
- Center of Health Sciences, Universidade Federal do Recôncavo da Bahia, Brazil
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17
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Martínez-Zaldívar C, Azaryah H, García-Santos JA, Demmelmair H, Altmäe S, Reischl E, Rzehak P, Koletzko B, Campoy C. Early nutrition in combination with polymorphisms in fatty acid desaturase gene cluster modulate fatty acid composition of cheek cells' glycerophospholipids in school-age children. Br J Nutr 2019; 122:S68-S79. [PMID: 31638497 DOI: 10.1017/s0007114518002623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Variants in the human genes of fatty acid (FA) desaturase 1 (FADS1), 2 (FADS2) and 3 (FADS3) are associated with PUFA blood levels. We explored if maternal prenatal supplementation and children's genetic variation in seventeen SNP of the FADS1, FADS2 and FADS3 gene cluster influence twenty-one of the most relevant cheek cells' derived FA in glycerophospholipids (GPL-FA). The study was conducted in 147 Spanish and German mother-children pairs participating in the Nutraceuticals for a Healthier Life (NUHEAL) study at 8, 9 and 9·5 years. Linear and mixed model longitudinal regression analyses were performed. Maternal fish-oil (FO) or FO+5-methyltetrahydrofolate (5-MTHF) supplementation during pregnancy was associated with a significant decrease of arachidonic acid (AA) concentrations in cheek cell GPL in the offspring, from 8 to 9·5 years; furthermore, maternal FO+5-MTHF supplementation was associated with higher n-6 docosapentaenoic acid concentrations in their children at age 8 years. FADS1 rs174556 polymorphism and different FADS2 genotypes were associated with higher concentrations of linoleic and α-linolenic acids in children; moreover, some FADS2 genotypes determined lower AA concentrations in children's cheek cells. It is suggested an interaction between type of prenatal supplementation and the offspring genetic background driving GPL-FA levels at school age. Prenatal FO supplementation, and/or with 5-MTHF, seems to stimulate n-3 and n-6 FA desaturation in the offspring, increasing long-chain PUFA concentrations at school age, but depending on children's FADS1 and FADS2 genotypes. These findings suggest potential early nutrition programming of FA metabolic pathways, but interacting with children's FADS polymorphisms.
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Affiliation(s)
- Cristina Martínez-Zaldívar
- EURISTIKOS Excellence Centre for Paediatric Research, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
| | - Hatim Azaryah
- EURISTIKOS Excellence Centre for Paediatric Research, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
| | - José A García-Santos
- EURISTIKOS Excellence Centre for Paediatric Research, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
| | - Hans Demmelmair
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich Medical Centre, Lindwurmstr, 4, D-80337 Munich, Germany
| | - Signe Altmäe
- EURISTIKOS Excellence Centre for Paediatric Research, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Granada, 18016, Granada, Spain
| | - Eva Reischl
- Research Unit of Molecular Epidemiology, Institute of Epidemiology II, Helmholtz Zentrum Muenchen, D-85764 Neuherberg, Munich, Germany
| | - Peter Rzehak
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich Medical Centre, Lindwurmstr, 4, D-80337 Munich, Germany
| | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Ludwig-Maximilians-University of Munich Medical Centre, Lindwurmstr, 4, D-80337 Munich, Germany
| | - Cristina Campoy
- EURISTIKOS Excellence Centre for Paediatric Research, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
- Department of Paediatrics, University of Granada, Avda de la Investigación 11, 18016, Granada, Spain
- Network of Biomedical Research Centres on Epidemiology and Public Health (CIBERESP), Institute Carlos III, Madrid, Spain
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18
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Robinson SL, Oliveros H, Mora-Plazas M, Marín C, Lozoff B, Villamor E. Polyunsaturated fatty acids in middle childhood and externalizing and internalizing behavior problems in adolescence. Eur J Clin Nutr 2019; 74:481-490. [PMID: 31383976 DOI: 10.1038/s41430-019-0484-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/25/2019] [Accepted: 07/22/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND/OBJECTIVES We sought to determine the associations of n-3 and n-6 polyunsaturated fatty acids (PUFA) in middle childhood with externalizing and internalizing behavior problems in adolescence. SUBJECTS/METHODS Using gas-liquid chromatography, we quantified n-3 and n-6 PUFA in serum samples of 444 Colombian schoolchildren aged 5-12 years at the time of enrollment into a cohort study. After a median 6 years, adolescent externalizing and internalizing behavior problems were determined with the Youth Self Report (YSR) questionnaire. We estimated adjusted mean behavior problem score differences with 95% confidence intervals (CIs) between quartiles of each PUFA using multivariable linear regression. We also considered as exposures the Δ6-desaturase (D6D) and Δ5-desaturase (D5D) enzyme activity indices. RESULTS Docosahexaenoic acid (DHA) was positively associated with externalizing problems; every standard deviation (SD) of DHA concentration was associated with an adjusted one unit higher externalizing problem score (95% CI: 0.1, 1.9). The D5D enzyme activity index was inversely related to externalizing problem scores. Alpha-linolenic acid concentration was positively associated with internalizing problem scores, whereas adrenic acid was inversely related to this outcome. CONCLUSIONS Serum PUFA in middle childhood were related to behavior problems in adolescence. Some of these associations might reflect the role of D5D enzyme activity.
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Affiliation(s)
- Sonia L Robinson
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | | | | | - Constanza Marín
- Universidad de la Sabana, Chia, Colombia.,Foundation for Research in Nutrition and Health, Bogota, Colombia
| | - Betsy Lozoff
- Center for Human Growth and Development, University of Michigan, Ann Arbor, MI, USA.,Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Eduardo Villamor
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA.
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19
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Losol P, Rezwan FI, Patil VK, Venter C, Ewart S, Zhang H, Arshad SH, Karmaus W, Holloway JW. Effect of gestational oily fish intake on the risk of allergy in children may be influenced by FADS1/2, ELOVL5 expression and DNA methylation. GENES AND NUTRITION 2019; 14:20. [PMID: 31244960 PMCID: PMC6582528 DOI: 10.1186/s12263-019-0644-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 06/05/2019] [Indexed: 02/08/2023]
Abstract
Background Evidence suggests that prenatal exposure to n-3 long-chain polyunsaturated fatty acids (LCPUFA) reduces the incidence of allergic disease in children. LCPUFAs are produced from dietary precursors catalyzed by desaturases and elongases encoded by the FADS1/2 and ELOVL5 genes. DNA methylation regulates gene activity and fatty acid supplementation could alter DNA methylation (DNA-M) at these genes. We investigated whether DNA-M and expression of the FADS1/2 and ELOVL5 genes were associated with allergy in children and gestational fish intake. We studied 170 participants from the Isle of Wight 3rd Generation Cohort, UK. Phenotype data and exposure was assessed by questionnaires. Genome-wide DNA-M in cord blood samples was quantified using the Illumina Infinium HumanMethylation450 and EPIC Beadchips. Five SNPs (single-nucleotide polymorphisms) in the FADS gene cluster and one SNP in ELOVL5 were genotyped in offspring. FADS gene expression in offspring cord blood was determined. Results Gestational fish intake was significantly associated with increased methylation of cg12517394 (P = 0.049), which positively correlated with FADS1 mRNA levels (P = 0.021). ELOVL5 rs2397142 was significantly associated with eczema (P = 0.011) and methylation at cg11748354 and cg24524396 (P < 0.001 and P = 0.036, respectively). Gestational fish intake was strongly associated with elevated DNA-M at cg11748354 and cg24524396 (P = 0.029 and P = 0.002, respectively) and reduced ELOVL5 mRNA expression (P = 0.028). Conclusion The association between induced FADS1/2 and ELOVL5 DNA-M and reduced gene expression due to gestational fish intake provide a mechanistic explanation of the previously observed association between maternal LCPUFA intake and allergy development in early childhood. Electronic supplementary material The online version of this article (10.1186/s12263-019-0644-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Purevsuren Losol
- 1Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.,2Department of Molecular Biology and Genetics, School of Biomedicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - Faisal I Rezwan
- 1Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Veeresh K Patil
- The David Hide Asthma and Allergy Research Centre, Isle of Wight, UK.,4Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Carina Venter
- The David Hide Asthma and Allergy Research Centre, Isle of Wight, UK
| | - Susan Ewart
- 5Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI USA
| | - Hongmei Zhang
- 6Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN USA
| | - S Hasan Arshad
- The David Hide Asthma and Allergy Research Centre, Isle of Wight, UK.,4Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Wilfried Karmaus
- 6Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN USA
| | - John W Holloway
- 1Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK.,4Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
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20
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Perinatal nutrition impacts on the functional development of the visual tract in infants. Pediatr Res 2019; 85:72-78. [PMID: 30237571 DOI: 10.1038/s41390-018-0161-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 07/18/2018] [Accepted: 07/23/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND OBJECTIVE We investigated the associations of maternal diet and serum fatty acids during pregnancy and in early infancy on infantile neurodevelopment. METHODS Pattern-reversal visual evoked potentials (pVEP) as depictors of central nervous system maturation were recorded from 56 children when they were 2 years old. Maternal nutrient intakes were calculated from food diaries and fish consumption from questionnaires collected during pregnancy. Serum phospholipid fatty acids were determined by gas chromatography in late pregnancy and from infants at 1 month of age. RESULTS The children of the women who consumed fish three or more times per week during the last trimester of pregnancy had a higher pVEP component P100 amplitude for 60' (mean 23.4, SD 8.1) and 30' (mean 20.4, SD 6.7) of arcminute check sizes compared to those who consumed fish 0-2 times per week (mean 15.0, SD 4.8, p = 0.023, adjusted for birth weight and gender p = 0.058 and mean 13.4, SD 2.0, respectively, p = 0.028, adjusted p = 0.072). Maternal and child serum phospholipid fatty acids correlated with child pVEP measurements. CONCLUSION The results of this small-scale study suggest that fish consumption during pregnancy and perinatal serum fatty acid status may associate with neurodevelopment within visual system during infancy.
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21
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Sun C, Zou M, Wang X, Xia W, Ma Y, Liang S, Hao Y, Wu L, Fu S. FADS1-FADS2 and ELOVL2 gene polymorphisms in susceptibility to autism spectrum disorders in Chinese children. BMC Psychiatry 2018; 18:283. [PMID: 30180836 PMCID: PMC6122697 DOI: 10.1186/s12888-018-1868-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 08/29/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUD Autism spectrum disorders (ASD) are a complex group of neurodevelopmental disorders with a genetic basis. The role of long-chain polyunsaturated fatty acids (LC-PUFAs) and the occurrence of autism has been the focus of many recent studies. The present study investigates whether genetic variants of the fatty acid desaturase (FADS) 1/2 and elongation of very long-chain fatty acids protein (ELOVL) 2 genes, which are involved in LC-PUFA metabolism, are associated with ASD risk. METHODS A cohort of 243 ASD patients and 243 unrelated healthy controls were enrolled in this case control study. Sixteen tag single nucleotide polymorphisms from the FADS1-2 and ELOVL2 genes were genotyped using the Sequenom Mass Array. RESULTS There were significant differences in allelic distribution of FADS2 rs526126 (OR = 0.55, 95% CI = 0.42-0.72, pFDR < 0.05) between autistic children and controls. FADS2 rs526126 and ELOVL2 rs10498676 were associated with decreased ASD risk in recessive model (OR = 0.07, 95% CI = 0.02-0.22, pFDR < 0.01; OR = 0.56, 95% CI = 0.35-0.89, pFDR = 0.042), while ELOVL2 rs17606561, rs3756963, and rs9468304 were associated with increased ASD risk in overdominant model (OR = 1.63, 95% CI = 1.12-2.36, pFDR = 0.036; OR = 1.64, 95% CI = 1.14-2.37, pFDR = 0.039; OR = 1.75, 95% CI = 1.22-2.50, pFDR = 0.017). The A/A genotype of rs10498676 was correlated with a decline in the Autism Diagnostic Interview-Revised communication (verbal and nonverbal) domain. CONCLUSIONS These findings provide evidence of an association between FADS2 and ELOVL2 polymorphisms and ASD susceptibility in Chinese children.
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Affiliation(s)
- Caihong Sun
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Mingyang Zou
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Xuelai Wang
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Wei Xia
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Yongjuan Ma
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Shuang Liang
- 0000 0001 2204 9268grid.410736.7Department of Children’s and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081 China
| | - Yanqiu Hao
- 0000 0001 2204 9268grid.410736.7Department of Pediatric, The Second Affiliated Hospital, Harbin Medical University, Harbin, 150081 China
| | - Lijie Wu
- Department of Children's and Adolescent Health, Public Health College, Harbin Medical University, Harbin, 150081, China.
| | - Songbin Fu
- Laboratory of Medical Genetics, Harbin Medical University, Harbin, 150081, China.
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22
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Yuzyuk T, Lozier B, Schwarz EL, Viau K, Kish-Trier E, De Biase I. Intra-individual variability of long-chain fatty acids (C12-C24) in plasma and red blood cells. Prostaglandins Leukot Essent Fatty Acids 2018; 135:30-38. [PMID: 30103929 DOI: 10.1016/j.plefa.2018.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/17/2022]
Abstract
Long-chain fatty acids (LCFA) play key roles in mammalian cells as sources of energy, structural components and signaling molecules. Given their importance in numerous physiological processes, the roles of LCFAs in health and disease have been extensively investigated. In the majority of studies, correlations are established using a single measurement in plasma or red blood cells (RBCs). Although a few studies have reported on reproducibility of individual fatty acid measurements, the comprehensive analysis of intra-individual LCFA variability has not been performed. Therefore, our goal was to determine intra-individual variability for the 22 most abundant LCFAs in both plasma and RBC samples collected from healthy individuals on a regular diet after overnight fasting. The measurements of LCFAs in RBCs were consistent throughout the course of study reflecting long-term nutritional status. In contrast, the results in plasma showed considerable LCFA intra-individual variability, even between fatty acids of the same type. Plasma intra-individual variability for omega-3 alpha-linolenic and eicosapentaenoic acids in some participants were >40% whereas the variability of docosahexaenoic acid was consistently <12.8%. Omega-6 linoleic and arachidonic acids also showed low variability in plasma. The results suggest that some LCFAs have less variability and would be more reliable as biomarkers. Reliability of biomarkers can have a profound impact on the research outcomes. Intra-individual variability of LCFAs should be taken into consideration in designing, conducting and interpreting results of clinical studies.
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Affiliation(s)
- T Yuzyuk
- Department of Pathology, University of Utah, Salt Lake City, UT, USA; ARUP Laboratories, Salt Lake City, UT, USA; ARUP Institute of Clinical & Experimental Pathology, Salt Lake City, UT, USA.
| | - B Lozier
- ARUP Institute of Clinical & Experimental Pathology, Salt Lake City, UT, USA
| | - E L Schwarz
- ARUP Institute of Clinical & Experimental Pathology, Salt Lake City, UT, USA
| | - K Viau
- Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA, USA
| | - E Kish-Trier
- ARUP Institute of Clinical & Experimental Pathology, Salt Lake City, UT, USA; Navigen, Salt Lake City, UT, USA (present affiliation)
| | - I De Biase
- Department of Pathology, University of Utah, Salt Lake City, UT, USA; ARUP Laboratories, Salt Lake City, UT, USA; ARUP Institute of Clinical & Experimental Pathology, Salt Lake City, UT, USA
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23
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Abstract
Fat is the main energy providing component in human milk and comprising a complex mixture of different lipid species, with quantitative dominance of triglycerides. After elucidating the fatty acid composition, more recent research has looked at influencing factors and the importance of specific lipids. Here we review quantitative aspects of maternal metabolism which contribute to the milk fatty acid composition, especially considering essential fatty acids and their long chain polyunsaturated derivatives. In this context studies with stable isotopes have indicated the importance of maternal body pools for mediating the effects of diet on milk composition. Furthermore, the importance of positioning of palmitic acid at the glycerol backbone of triglycerides is discussed, and the phospholipids of the milk fat globule membrane are described and examples for their potential importance for infant development are presented.
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Affiliation(s)
- Hans Demmelmair
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Univ. of Munich Medical Centre, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, München, Germany.
| | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine, Dr. von Hauner Children's Hospital, Univ. of Munich Medical Centre, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, München, Germany.
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24
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Yeates AJ, Thurston SW, Li H, Mulhern MS, McSorley EM, Watson GE, Shamlaye CF, Strain JJ, Myers GJ, Davidson PW, van Wijngaarden E, Broberg K. PUFA Status and Methylmercury Exposure Are Not Associated with Leukocyte Telomere Length in Mothers or Their Children in the Seychelles Child Development Study. J Nutr 2017; 147:2018-2024. [PMID: 28978678 PMCID: PMC5657138 DOI: 10.3945/jn.117.253021] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/26/2017] [Accepted: 09/06/2017] [Indexed: 12/18/2022] Open
Abstract
Background: Leukocyte telomere length (TL) is associated with age-related diseases and early mortality, but there is a lack of data on the determinants of TL in early life. Evidence suggests that dietary intake of marine n-3 (ω-3) polyunsaturated fatty acids (PUFAs) is protective of telomere attrition, yet the effect of methylmercury exposure, also found in fish, on TL is unknown.Objective: The aim of this study was to investigate the associations between prenatal PUFA status, methylmercury exposure, and TL in mothers and children in the SCDS (Seychelles Child Development Study), for whom fish consumption is high.Methods: Blood samples collected from 229 mothers (at 28 wk gestation and delivery) and children (at 5 y of age) in the SCDS first nutrition cohort were analyzed for PUFA concentrations. Prenatal mercury was measured in maternal hair collected at delivery. Postnatal mercury was also measured in children's hair samples with the use of a cumulative metric derived from values obtained at 3-5 y of age. Relative TL was measured in blood obtained from mothers at delivery, in cord blood, and in children at 5 y of age by quantitative polymerase chain reaction. Linear regression models were used to investigate the associations between PUFA status, methylmercury exposure, and TL.Results: Neither prenatal PUFA status or methylmercury exposure was associated with TL of the mother or child or with TL attrition rate. However, a higher prenatal n-6:n-3 PUFA ratio was significantly associated with longer TLs in the mothers (β = 0.001, P = 0.048). Child PUFA status and methylmercury exposure were not associated with child TL. However, higher family Hollingshead socioeconomic status (SES) scores at 9 mo of age were significantly associated with longer TLs in cord blood (β = 0.005, P = 0.03).Conclusions: We found no evidence that PUFA status or methylmercury exposure are determinants of TL in either the mother or child. However, our results support the hypothesis that family SES may be associated with child TL.
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Affiliation(s)
- Alison J Yeates
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom;
| | - Sally W Thurston
- School of Medicine and Dentistry, University of Rochester, Rochester, NY
| | - Huiqi Li
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Maria S Mulhern
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Gene E Watson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY
| | - Conrad F Shamlaye
- The Child Development Centre, Ministry of Health, Mahé, Republic of Seychelles, Seychelles; and
| | - JJ Strain
- Nutrition Innovation Centre for Food and Health, School of Biomedical Sciences, Ulster University, Coleraine, United Kingdom
| | - Gary J Myers
- School of Medicine and Dentistry, University of Rochester, Rochester, NY
| | - Philip W Davidson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY
| | | | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
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25
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Chen F, Lin T, Yan L, Liu F, Huang J, Liu F, Wu J, Qiu Y, Lin L, Cai L, He B. Novel polymorphism in FADS1 gene and fish consumption on risk of oral cancer: A case-control study in southeast China. Oncotarget 2017; 8:15887-15893. [PMID: 28178666 PMCID: PMC5362531 DOI: 10.18632/oncotarget.15069] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 01/17/2017] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to investigate the independent and combined effects of fatty acid desaturase 1 (FADS1) gene polymorphism and fish consumption on oral cancer. A hospital-based case-control study was performed including 305 oral cancer patients and 579 cancer-free controls. The genotypes were determined by TaqMan genotyping assay. Non-conditional logistic regression model was used to assess the effects of FADS1 rs174549 polymorphism and fish intake. Subjects carrying A allele of rs174549 significantly reduced the risk of oral cancer (AA VS GG, OR: 0.65, 95% CI: 0.42-0.99; AA VS AG+GG, OR: 0.67, 95% CI: 0.46-0.98). Moreover, the statistically significant reverse associations were especially evident in men, smokers, alcohol drinkers and those age ≤ 60 years. Additionally, fish intake ≥7 times/week showed a 73% reduction in risk for oral cancer compared to those who ate fish less than 2 times/week (OR: 0.27, 95% CI: 0.18-0.42). Furthermore, a significant gene-diet multiplicative interaction was observed between FADS1 rs174549 polymorphism and fish intake for oral cancer (P=0.028). This preliminary study suggests that FADS1 rs174549 polymorphism and fish consumption may be protective factors for oral cancer, with a gene-diet multiplicative interaction. Functional studies with larger samples are required to confirm our findings.
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Affiliation(s)
- Fa Chen
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Tao Lin
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Lingjun Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Fengqiong Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Jiangfeng Huang
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Fangping Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Junfeng Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Yu Qiu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Lisong Lin
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Fujian Medical University, Fujian, China
| | - Lin Cai
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
| | - Baochang He
- Department of Epidemiology and Health Statistics, School of Public Health, Fujian Medical University, Fujian, China
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26
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Association of maternal weight with FADS and ELOVL genetic variants and fatty acid levels- The PREOBE follow-up. PLoS One 2017; 12:e0179135. [PMID: 28598979 PMCID: PMC5466308 DOI: 10.1371/journal.pone.0179135] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 05/24/2017] [Indexed: 12/20/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) in the genes encoding the fatty acid desaturase (FADS) and elongase (ELOVL) enzymes affect long-chain polyunsaturated fatty acid (LC-PUFA) production. We aimed to determine if these SNPs are associated with body mass index (BMI) or affect fatty acids (FAs) in pregnant women. Participants (n = 180) from the PREOBE cohort were grouped according to pre-pregnancy BMI: normal-weight (BMI = 18.5–24.9, n = 88) and overweight/obese (BMI≥25, n = 92). Plasma samples were analyzed at 24 weeks of gestation to measure FA levels in the phospholipid fraction. Selected SNPs were genotyped (7 in FADS1, 5 in FADS2, 3 in ELOVL2 and 2 in ELOVL5). Minor allele carriers of rs174545, rs174546, rs174548 and rs174553 (FADS1), and rs1535 and rs174583 (FADS2) were nominally associated with an increased risk of having a BMI≥25. Only for the normal-weight group, minor allele carriers of rs174537, rs174545, rs174546, and rs174553 (FADS1) were negatively associated with AA:DGLA index. Normal-weight women who were minor allele carriers of FADS SNPs had lower levels of AA, AA:DGLA and AA:LA indexes, and higher levels of DGLA, compared to major homozygotes. Among minor allele carriers of FADS2 and ELOVL2 SNPs, overweight/obese women showed higher DHA:EPA index than the normal-weight group; however, they did not present higher DHA concentrations than the normal-weight women. In conclusion, minor allele carriers of FADS SNPs have an increased risk of obesity. Maternal weight changes the effect of genotype on FA levels. Only in the normal-weight group, minor allele carriers of FADS SNPs displayed reduced enzymatic activity and FA levels. This suggests that women with a BMI≥25 are less affected by FADS genetic variants in this regard. In the presence of FADS2 and ELOVL2 SNPs, overweight/obese women showed higher n-3 LC-PUFA production indexes than women with normal weight, but this was not enough to obtain a higher n-3 LC-PUFA concentration.
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27
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van Wijngaarden E, Thurston SW, Myers GJ, Harrington D, Cory-Slechta DA, Strain JJ, Watson GE, Zareba G, Love T, Henderson J, Shamlaye CF, Davidson PW. Methyl mercury exposure and neurodevelopmental outcomes in the Seychelles Child Development Study Main cohort at age 22 and 24years. Neurotoxicol Teratol 2016; 59:35-42. [PMID: 27989696 DOI: 10.1016/j.ntt.2016.10.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 09/29/2016] [Accepted: 10/26/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND All fish contain methyl mercury (MeHg), a known neurotoxicant at adequate dosage. There is still substantial scientific uncertainty about the consequences, if any, of mothers consuming fish with naturally-acquired levels of MeHg contamination. In 1989-1990, we recruited the Main Cohort of the Seychelles Child Development Study to assess the potential developmental effects of prenatal MeHg exposure. We report here on associations with neurodevelopmental outcomes obtained at 22 and 24years of age. METHODS Neurodevelopmental tests at 22years included the Boston Naming Test, Cambridge Neuropsychological Test Automated Battery (CANTAB), and the Profile of Mood States. At 24years, we administered the Stroop Word-Color Test, the Barkley Adult ADHD Rating Scale, the Test of Variables of Attention, and the Finger Tapping test. We also administered a healthy behaviors survey at both ages. Primary analyses examined covariate-adjusted associations in multiple linear regression models with prenatal MeHg exposure. In secondary analyses we also examined associations with recent postnatal MeHg exposure. RESULTS We did not observe adverse associations between prenatal MeHg exposure and any of the measured endpoints. Some measures of attention, executive function, and delayed recall showed improved performance with increasing exposure. Secondary analysis did not show consistent patterns of association with postnatal exposure. CONCLUSIONS Our cohort has been examined at ten different ages over 24years of follow-up. Findings suggest that prenatal and recent postnatal MeHg exposure from ocean fish consumption is not adversely associated with neurobehavioral development at levels that are about ten times higher than typical U.S. exposures.
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Affiliation(s)
- Edwin van Wijngaarden
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States.
| | - Sally W Thurston
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Gary J Myers
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Donald Harrington
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | | | - J J Strain
- Ulster University, Coleraine, Northern Ireland, United Kingdom
| | - Gene E Watson
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Grazyna Zareba
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Tanzy Love
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | | | | | - Philip W Davidson
- University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
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Neuroinflammation in Autism: Plausible Role of Maternal Inflammation, Dietary Omega 3, and Microbiota. Neural Plast 2016; 2016:3597209. [PMID: 27840741 PMCID: PMC5093279 DOI: 10.1155/2016/3597209] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/24/2016] [Accepted: 09/27/2016] [Indexed: 02/06/2023] Open
Abstract
Several genetic causes of autism spectrum disorder (ASD) have been identified. However, more recent work has highlighted that certain environmental exposures early in life may also account for some cases of autism. Environmental insults during pregnancy, such as infection or malnutrition, seem to dramatically impact brain development. Maternal viral or bacterial infections have been characterized as disruptors of brain shaping, even if their underlying mechanisms are not yet fully understood. Poor nutritional diversity, as well as nutrient deficiency, is strongly associated with neurodevelopmental disorders in children. For instance, imbalanced levels of essential fatty acids, and especially polyunsaturated fatty acids (PUFAs), are observed in patients with ASD and other neurodevelopmental disorders (e.g., attention deficit hyperactivity disorder (ADHD) and schizophrenia). Interestingly, PUFAs, and specifically n-3 PUFAs, are powerful immunomodulators that exert anti-inflammatory properties. These prenatal dietary and immunologic factors not only impact the fetal brain, but also affect the microbiota. Recent work suggests that the microbiota could be the missing link between environmental insults in prenatal life and future neurodevelopmental disorders. As both nutrition and inflammation can massively affect the microbiota, we discuss here how understanding the crosstalk between these three actors could provide a promising framework to better elucidate ASD etiology.
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Engström K, Love TM, Watson GE, Zareba G, Yeates A, Wahlberg K, Alhamdow A, Thurston SW, Mulhern M, McSorley EM, Strain JJ, Davidson PW, Shamlaye CF, Myers GJ, Rand MD, van Wijngaarden E, Broberg K. Polymorphisms in ATP-binding cassette transporters associated with maternal methylmercury disposition and infant neurodevelopment in mother-infant pairs in the Seychelles Child Development Study. ENVIRONMENT INTERNATIONAL 2016; 94:224-229. [PMID: 27262785 PMCID: PMC4980164 DOI: 10.1016/j.envint.2016.05.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/20/2016] [Accepted: 05/26/2016] [Indexed: 05/03/2023]
Abstract
BACKGROUND ATP-binding cassette (ABC) transporters have been associated with methylmercury (MeHg) toxicity in experimental animal models. AIMS To evaluate the association of single nucleotide polymorphisms (SNPs) in maternal ABC transporter genes with 1) maternal hair MeHg concentrations during pregnancy and 2) child neurodevelopmental outcomes. MATERIALS AND METHODS Nutrition Cohort 2 (NC2) is an observational mother-child cohort recruited in the Republic of Seychelles from 2008-2011. Total mercury (Hg) was measured in maternal hair growing during pregnancy as a biomarker for prenatal MeHg exposure (N=1313) (mean 3.9ppm). Infants completed developmental assessments by Bayley Scales of Infant Development II (BSID-II) at 20months of age (N=1331). Genotyping for fifteen SNPs in ABCC1, ABCC2 and ABCB1 was performed for the mothers. RESULTS Seven of fifteen ABC SNPs (ABCC1 rs11075290, rs212093, and rs215088; ABCC2 rs717620; ABCB1 rs10276499, rs1202169, and rs2032582) were associated with concentrations of maternal hair Hg (p<0.001 to 0.013). One SNP (ABCC1 rs11075290) was also significantly associated with neurodevelopment; children born to mothers with rs11075290 CC genotype (mean hair Hg 3.6ppm) scored on average 2 points lower on the Mental Development Index (MDI) and 3 points lower on the Psychomotor Development Index (PDI) than children born to mothers with TT genotype (mean hair Hg 4.7ppm) while children with the CT genotype (mean hair Hg 4.0ppm) had intermediate BSID scores. DISCUSSION Genetic variation in ABC transporter genes was associated with maternal hair Hg concentrations. The implications for MeHg dose in the developing child and neurodevelopmental outcomes need to be further investigated.
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Affiliation(s)
- Karin Engström
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden; Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden
| | - Tanzy M Love
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Gene E Watson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Grazyna Zareba
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Alison Yeates
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Karin Wahlberg
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden
| | - Ayman Alhamdow
- Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden
| | - Sally W Thurston
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Maria Mulhern
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Emeir M McSorley
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - J J Strain
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Philip W Davidson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | | | - G J Myers
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Matthew D Rand
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Edwin van Wijngaarden
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Karin Broberg
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden; Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden.
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