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Chew NW, Chong B, Kuo SM, Jayabaskaran J, Cai M, Zheng H, Goh R, Kong G, Chin YH, Imran SS, Liang M, Lim P, Yong TH, Liew BW, Chia PL, Ho HH, Foo D, Khoo D, Huang Z, Chua T, Tan JWC, Yeo KK, Hausenloy D, Sim HW, Kua J, Chan KH, Loh PH, Lim TW, Low AF, Chai P, Lee CH, Yeo TC, Yip J, Tan HC, Mamas MA, Nicholls SJ, Chan MY. Trends and predictions of metabolic risk factors for acute myocardial infarction: findings from a multiethnic nationwide cohort. THE LANCET REGIONAL HEALTH. WESTERN PACIFIC 2023; 37:100803. [PMID: 37693863 PMCID: PMC10485675 DOI: 10.1016/j.lanwpc.2023.100803] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/21/2023] [Accepted: 05/14/2023] [Indexed: 09/12/2023]
Abstract
Background Understanding the trajectories of metabolic risk factors for acute myocardial infarction (AMI) is necessary for healthcare policymaking. We estimated future projections of the incidence of metabolic diseases in a multi-ethnic population with AMI. Methods The incidence and mortality contributed by metabolic risk factors in the population with AMI (diabetes mellitus [T2DM], hypertension, hyperlipidemia, overweight/obesity, active/previous smokers) were projected up to year 2050, using linear and Poisson regression models based on the Singapore Myocardial Infarction Registry from 2007 to 2018. Forecast analysis was stratified based on age, sex and ethnicity. Findings From 2025 to 2050, the incidence of AMI is predicted to rise by 194.4% from 482 to 1418 per 100,000 population. The largest percentage increase in metabolic risk factors within the population with AMI is projected to be overweight/obesity (880.0% increase), followed by hypertension (248.7% increase), T2DM (215.7% increase), hyperlipidemia (205.0% increase), and active/previous smoking (164.8% increase). The number of AMI-related deaths is expected to increase by 294.7% in individuals with overweight/obesity, while mortality is predicted to decrease by 11.7% in hyperlipidemia, 29.9% in hypertension, 32.7% in T2DM and 49.6% in active/previous smokers, from 2025 to 2050. Compared with Chinese individuals, Indian and Malay individuals bear a disproportionate burden of overweight/obesity incidence and AMI-related mortality. Interpretation The incidence of AMI is projected to continue rising in the coming decades. Overweight/obesity will emerge as fastest-growing metabolic risk factor and the leading risk factor for AMI-related mortality. Funding This research was supported by the NUHS Seed Fund (NUHSRO/2022/058/RO5+6/Seed-Mar/03) and National Medical Research Council Research Training Fellowship (MOH-001131). The SMIR is a national, ministry-funded registry run by the National Registry of Diseases Office and funded by the Ministry of Health, Singapore.
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Affiliation(s)
- Nicholas W.S. Chew
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Bryan Chong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Si Min Kuo
- Policy, Research and Surveillance Division, Health Promotion Board, Singapore
| | | | - Mingshi Cai
- Policy, Research and Surveillance Division, Health Promotion Board, Singapore
| | | | - Rachel Goh
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Gwyneth Kong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Yip Han Chin
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | | | | | | | | | | | | | | | | | | | - Zijuan Huang
- Department of Cardiology, National Heart Centre, Singapore
| | - Terrance Chua
- Department of Cardiology, National Heart Centre, Singapore
| | | | | | - Derek Hausenloy
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore
- National Heart Research Institute Singapore, National Heart Centre, Singapore
- The Hatter Cardiovascular Institute, University College London, London, UK
| | - Hui Wen Sim
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
- Department of Cardiology, Ng Teng Fong General Hospital, Singapore
| | - Jieli Kua
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
- Department of Cardiology, Ng Teng Fong General Hospital, Singapore
| | - Koo Hui Chan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Poay Huan Loh
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
- Department of Cardiology, Ng Teng Fong General Hospital, Singapore
| | - Toon Wei Lim
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Adrian F. Low
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Ping Chai
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Chi Hang Lee
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Tiong Cheng Yeo
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - James Yip
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Huay Cheem Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
| | - Mamas A. Mamas
- Institute of Population Health, University of Manchester, Manchester, UK
- Keele Cardiac Research Group, Centre for Prognosis Research, Keele University, Stoke-on-Trent, UK
| | - Stephen J. Nicholls
- Victorian Heart Institute, Melbourne, Australia
- Monash Heart, Monash Health, Melbourne, Australia
| | - Mark Y. Chan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Health System, Singapore
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Linking single nucleotide polymorphisms to signaling blueprints in abdominal aortic aneurysms. Sci Rep 2022; 12:20990. [PMID: 36470918 PMCID: PMC9722707 DOI: 10.1038/s41598-022-25144-y] [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: 09/12/2022] [Accepted: 11/25/2022] [Indexed: 12/07/2022] Open
Abstract
Abdominal aortic aneurysms (AAA) is a multifactorial complex disease with life-threatening consequences. While Genome-wide association studies (GWAS) have revealed several single nucleotide polymorphisms (SNPs) located in the genome of individuals with AAA, the link between SNPs with the associated pathological signals, the influence of risk factors on their distribution and their combined analysis is not fully understood. We integrated 86 AAA SNPs from GWAS and clinical cohorts from the literature to determine their phenotypical vulnerabilities and association with AAA risk factors. The SNPs were annotated using snpXplorer AnnotateMe tool to identify their chromosomal position, minor allele frequency, CADD (Combined Annotation Dependent Depletion), annotation-based pathogenicity score, variant consequence, and their associated gene. Gene enrichment analysis was performed using Gene Ontology and clustered using REVIGO. The plug-in GeneMANIA in Cytoscape was applied to identify network integration with associated genes and functions. 15 SNPs affecting 20 genes with a CADD score above ten were identified. AAA SNPs were predominantly located on chromosome 3 and 9. Stop-gained rs5516 SNP obtained high frequency in AAA and associated with proinflammatory and vascular remodeling phenotypes. SNPs presence positively correlated with hypertension, dyslipidemia and smoking history. GO showed that AAA SNPs and their associated genes could regulate lipid metabolism, extracellular matrix organization, smooth muscle cell proliferation, and oxidative stress, suggesting that part of these AAA traits could stem from genetic abnormalities. We show a library of inborn SNPs and associated genes that manifest in AAA. We uncover their pathological signaling trajectories that likely fuel AAA development.
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Torres ERS, Luo J, Boehnlein JK, Towns D, Kinzie JD, DeBarber AE, Raber J. Apolipoprotein E Isoform-specific changes related to stress and trauma exposure. Transl Psychiatry 2022; 12:125. [PMID: 35347119 PMCID: PMC8960860 DOI: 10.1038/s41398-022-01848-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/06/2022] [Accepted: 02/09/2022] [Indexed: 11/19/2022] Open
Abstract
Post-Traumatic Stress Disorder (PTSD) is a highly prevalent mental health disorder. Due to the high level of variability in susceptibility and severity, PTSD therapies are still insufficient. In addition to environmental exposures, genetic risks play a prominent role and one such factor is apolipoprotein E. The protein (apoE) is functionally involved in cholesterol transport and metabolism and exists as 3 major isoforms in humans: E2, E3, and E4. To model the role of apolipoprotein E isoform in stress-related changes in behavior and cognition, female and male mice (3-5 months of age) expressing E2, E3, or E4 were used. Mice were either placed into control groups or exposed to chronic variable stress (CVS), which has been shown to induce PTSD-like behavioral and neuroendocrine changes. E2 mice showed a unique response to CVS compared to E3 and E4 mice that included impaired spatial learning and memory, increased adrenal gland weight, and no increase in glucocorticoid receptor protein levels (normalized to apoE levels). In addition, the cholesterol metabolite 7-ketocholesterol was elevated in the cortex after CVS in E3 and E4, but not E2 female mice. E2 confers unique changes in behavioral, cognitive, and biomarker profiles after stress exposure and identify 7-ketocholesterol as a possible novel biomarker of the traumatic stress response. We further explored the relationship between E2 and PTSD in an understudied population by genotyping 102 patients of Cambodian and Vietnamese ethnicity. E2 carriers demonstrated a higher odds ratio of having a PTSD diagnosis compared to E3/E3 carriers, supporting that the E2 genotype is associated with PTSD diagnosis after trauma exposure in this population.
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Affiliation(s)
- Eileen Ruth S Torres
- Department of Behavioral Neuroscience, Oregon Health & Science University, 3181SW Sam Jackson Park Road, L470, Portland, OR, 97239, USA
| | - Jenny Luo
- Department of Chemical Physiology & Biochemistry, Oregon Health & Science University, Portland, OR, 97239, USA
| | - James K Boehnlein
- Department of Psychiatry, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, UHN-80, Portland, OR, 97201-3098, USA
- VA Northwest Mental Illness Research, Education and Clinical Center (MIRECC), Washington DC, USA
| | - Daniel Towns
- Department of Psychiatry, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, UHN-80, Portland, OR, 97201-3098, USA
| | - J David Kinzie
- Department of Psychiatry, Oregon Health & Science University, 3181 S.W. Sam Jackson Park Road, UHN-80, Portland, OR, 97201-3098, USA
| | - Andrea E DeBarber
- Department of Chemical Physiology & Biochemistry, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Jacob Raber
- Department of Behavioral Neuroscience, Oregon Health & Science University, 3181SW Sam Jackson Park Road, L470, Portland, OR, 97239, USA.
- Departments of Neurology, Psychiatry, and Radiation Medicine and Division of Neuroscience, ONPRC, Oregon Health & Science University, Portland, OR, 97239, USA.
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Lozano S, Padilla V, Avila ML, Gil M, Maestre G, Wang K, Xu C. APOE Gene Associated with Cholesterol-Related Traits in the Hispanic Population. Genes (Basel) 2021; 12:genes12111768. [PMID: 34828374 PMCID: PMC8619821 DOI: 10.3390/genes12111768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022] Open
Abstract
Genetic variants in the apolipoprotein E (APOE) gene are associated with lipid metabolism and lipid-related traits in the non-Hispanic population. There have been limited studies regarding the association between the APOE gene and hypercholesterolemia in the Hispanic population; therefore, our aim for this study is to examine the APOE gene’s associations with cholesterol level and its related phenotypes. The APOE gene consists of three different alleles, ε2, ε3, and ε4, with ε4 being associated with dementia and cardiovascular diseases. A total of 1,382 subjects were collected from the Texas Alzheimer’s Research and Care Consortium (TARCC, N = 1320) and the Initial Study of Longevity and Dementia from the Rio Grande Valley (ISLD-RGV, N = 62). Questionnaires on demographics, medical history, and blood/saliva samples were collected and APOE genotypes were performed. We observed allele frequencies of the APOE ε3 (96.7%), ε4 (22.6%) and ε2 (6.8%) alleles, respectively. Multivariable logistic regression revealed a significant association between the APOE ε4 allele and hypercholesteremia (p = 1.8 × 10−4) in our studied Hispanic population. We prove for the first time, that the APOE ε4 allele increases the risk for hypercholesterol in Hispanics. Further research is needed to confirm and supports our current findings.
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Affiliation(s)
- Stephanie Lozano
- Department of Science, Graduate College of Biochemistry and Molecular Biology, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;
| | - Victoria Padilla
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, Brownsville, TX 78520, USA; (V.P.); (M.L.A.)
| | - Manuel Lee Avila
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, Brownsville, TX 78520, USA; (V.P.); (M.L.A.)
| | - Mario Gil
- Department of Psychological Science, University of Texas Rio Grande Valley, Brownsville, TX 78520, USA;
- Department of Neuroscience, School of Medicine, University of Texas Rio Grande Valley, Harlingen, TX 78539, USA
| | - Gladys Maestre
- Neuroscience and School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;
| | - Kesheng Wang
- Health Sciences Center, Department of Family and Community Health, School of Nursing, West Virginia University, Morgantown, WV 26506, USA
- Correspondence: (K.W.); (C.X.); Tel.: +1-304-581-1912 (K.W.); +1-956-882-4193 (C.X.)
| | - Chun Xu
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, Brownsville, TX 78520, USA; (V.P.); (M.L.A.)
- Correspondence: (K.W.); (C.X.); Tel.: +1-304-581-1912 (K.W.); +1-956-882-4193 (C.X.)
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Gene Expression Profile in Different Age Groups and Its Association with Cognitive Function in Healthy Malay Adults in Malaysia. Cells 2021; 10:cells10071611. [PMID: 34199148 PMCID: PMC8304476 DOI: 10.3390/cells10071611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 06/13/2021] [Accepted: 06/21/2021] [Indexed: 11/16/2022] Open
Abstract
The mechanism of cognitive aging at the molecular level is complex and not well understood. Growing evidence suggests that cognitive differences might also be caused by ethnicity. Thus, this study aims to determine the gene expression changes associated with age-related cognitive decline among Malay adults in Malaysia. A cross-sectional study was conducted on 160 healthy Malay subjects, aged between 28 and 79, and recruited around Selangor and Klang Valley, Malaysia. Gene expression analysis was performed using a HumanHT-12v4.0 Expression BeadChip microarray kit. The top 20 differentially expressed genes at p < 0.05 and fold change (FC) = 1.2 showed that PAFAH1B3, HIST1H1E, KCNA3, TM7SF2, RGS1, and TGFBRAP1 were regulated with increased age. The gene set analysis suggests that the Malay adult's susceptibility to developing age-related cognitive decline might be due to the changes in gene expression patterns associated with inflammation, signal transduction, and metabolic pathway in the genetic network. It may, perhaps, have important implications for finding a biomarker for cognitive decline and offer molecular targets to achieve successful aging, mainly in the Malay population in Malaysia.
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Tan CH, Hilal S, Xu X, Vrooman H, Cheng CY, Wong TY, Venketasubramanian N, Chen C. MRI Markers of Mixed Pathology and Cognitive Impairment in Multiethnic Asians. J Alzheimers Dis 2021; 73:1501-1509. [PMID: 31958085 DOI: 10.3233/jad-190866] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
There is a need to elucidate the combined influence of neurodegeneration and cerebrovascular disease (CeVD) on cognitive impairment, especially in diverse populations. Here, we evaluated 840 multiethnic individuals (mean age = 70.18) across the disease spectrum from the Epidemiology of Dementia in Singapore study. First, we determined whether a validated quantitative MRI score of mixed pathology is associated with clinical diagnosis and whether the score differed between ethnicities (Chinese, Malays, and Indians). We then evaluated whether the score was associated with multidomain cognitive impairment and if additional measures of CeVD were further associated with cognitive impairment. We found that lower quantitative MRI scores were associated with severity of clinical diagnosis and Chinese individuals had the highest quantitative MRI scores, followed by Indians and Malays. Lower quantitative MRI scores were also associated with lower performance in attention, language, visuoconstruction, visuomotor, visual, and verbal memory domains. Lastly, the presence of intracranial stenosis and cortical cerebral microinfarcts, but not cerebral microbleeds, were associated with memory performance beyond quantitative MRI scores. Taken together, our results demonstrate the utility of using multiple MRI markers of neurodegeneration and CeVD for identifying multiethnic Asians with the greatest cognitive impairment due to mixed pathology.
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Affiliation(s)
- Chin Hong Tan
- Division of Psychology, Nanyang Technological University, Singapore.,Department of Pharmacology, National University of Singapore, Singapore
| | - Saima Hilal
- Department of Pharmacology, National University of Singapore, Singapore.,Memory Ageing and Cognition Centre, National University Health System, Singapore
| | - Xin Xu
- Department of Pharmacology, National University of Singapore, Singapore.,Memory Ageing and Cognition Centre, National University Health System, Singapore
| | - Henri Vrooman
- Department of Radiology & Medical Informatics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Ching-Yu Cheng
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore.,Academic Medicine Research Institute, Duke-NUS Graduate Medical School, Singapore
| | - Tien Yin Wong
- Singapore Eye Research Institute, Singapore National Eye Center, Singapore.,Academic Medicine Research Institute, Duke-NUS Graduate Medical School, Singapore
| | | | - Christopher Chen
- Department of Pharmacology, National University of Singapore, Singapore.,Memory Ageing and Cognition Centre, National University Health System, Singapore
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Walker RM, Vaher K, Bermingham ML, Morris SW, Bretherick AD, Zeng Y, Rawlik K, Amador C, Campbell A, Haley CS, Hayward C, Porteous DJ, McIntosh AM, Marioni RE, Evans KL. Identification of epigenome-wide DNA methylation differences between carriers of APOE ε4 and APOE ε2 alleles. Genome Med 2021; 13:1. [PMID: 33397400 PMCID: PMC7784364 DOI: 10.1186/s13073-020-00808-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 11/12/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The apolipoprotein E (APOE) ε4 allele is the strongest genetic risk factor for late onset Alzheimer's disease, whilst the ε2 allele confers protection. Previous studies report differential DNA methylation of APOE between ε4 and ε2 carriers, but associations with epigenome-wide methylation have not previously been characterised. METHODS Using the EPIC array, we investigated epigenome-wide differences in whole blood DNA methylation patterns between Alzheimer's disease-free APOE ε4 (n = 2469) and ε2 (n = 1118) carriers from the two largest single-cohort DNA methylation samples profiled to date. Using a discovery, replication and meta-analysis study design, methylation differences were identified using epigenome-wide association analysis and differentially methylated region (DMR) approaches. Results were explored using pathway and methylation quantitative trait loci (meQTL) analyses. RESULTS We obtained replicated evidence for DNA methylation differences in a ~ 169 kb region, which encompasses part of APOE and several upstream genes. Meta-analytic approaches identified DNA methylation differences outside of APOE: differentially methylated positions were identified in DHCR24, LDLR and ABCG1 (2.59 × 10-100 ≤ P ≤ 2.44 × 10-8) and DMRs were identified in SREBF2 and LDLR (1.63 × 10-4 ≤ P ≤ 3.01 × 10-2). Pathway and meQTL analyses implicated lipid-related processes and high-density lipoprotein cholesterol was identified as a partial mediator of the methylation differences in ABCG1 and DHCR24. CONCLUSIONS APOE ε4 vs. ε2 carrier status is associated with epigenome-wide methylation differences in the blood. The loci identified are located in trans as well as cis to APOE and implicate genes involved in lipid homeostasis.
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Affiliation(s)
- Rosie M. Walker
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
- Present Address: Centre for Clinical Brain Sciences, Chancellor’s Building, 49 Little France Crescent, Edinburgh BioQuarter, Edinburgh, EH16 4SB UK
| | - Kadi Vaher
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
- Present Address: MRC Centre for Reproductive Health, The Queen’s Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent, Edinburgh, EH16 4TJ UK
| | - Mairead L. Bermingham
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Stewart W. Morris
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Andrew D. Bretherick
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Yanni Zeng
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
- Present address: Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-Sen University, 74 Zhongshan 2nd Road, Guangzhou, 510080 China
| | - Konrad Rawlik
- Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Roslin, UK
| | - Carmen Amador
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Archie Campbell
- Generation Scotland, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Chris S. Haley
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Caroline Hayward
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - David J. Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
- Generation Scotland, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Andrew M. McIntosh
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, EH10 5HF UK
| | - Riccardo E. Marioni
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
| | - Kathryn L. Evans
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, EH4 2XU UK
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Xu L, Polya DA, Li Q, Mondal D. Association of low-level inorganic arsenic exposure from rice with age-standardized mortality risk of cardiovascular disease (CVD) in England and Wales. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140534. [PMID: 32659549 DOI: 10.1016/j.scitotenv.2020.140534] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/26/2020] [Accepted: 06/24/2020] [Indexed: 05/10/2023]
Abstract
Adverse health outcomes, including death from cardiovascular disease (CVD), arising from chronic exposure to inorganic arsenic (iAs) are well documented. Consumption of rice is a major iAs exposure route for over 3 billion people, however, there is still a lack of epidemiological evidence demonstrating the association between iAs exposure from rice intake and CVD risks. We explored this potential association through an ecological study using data at local authority level across England and Wales. Local authority level daily per capita iAs exposure from rice (E-iAsing,rice) was estimated using ethnicity as a proxy for class of rice consumption. A series of linear and non-linear models were applied to estimate the association between E-iAsing,rice and CVD age-standardized mortality rate (ASMR), using Akaike's Information Criterion as the principle model selection criterion. When adjusted for significant confounders, notably smoking prevalence, education level, employment rate, overweight percentage, PM2.5, female percentage and medical and care establishments, the preferred non-linear model indicated that CVD risks increased with iAs exposure from rice at exposures above 0.3 μg/person/day. Also, the best-fitted linear model indicated that CVD ASMR in the highest quartile of iAs exposure (0.375-2.71 μg/person/day) was 1.06 (1.02, 1.11; p-trend <0.001) times higher than that in the lowest quartile (<0.265 μg/person/day). Notwithstanding the well-known limitations of ecological studies, this study further suggests exposure to iAs, including from rice intake, as a potentially important confounder for studies of the factors controlling CVD risks.
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Affiliation(s)
- Lingqian Xu
- Department of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK
| | - David A Polya
- Department of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK.
| | - Qian Li
- Department of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester M13 9PL, UK
| | - Debapriya Mondal
- School of Science, Engineering & Environment, University of Salford, Salford M5 4WT, UK
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Interethnic differences in neuroimaging markers and cognition in Asians, a population-based study. Sci Rep 2020; 10:2655. [PMID: 32060376 PMCID: PMC7021682 DOI: 10.1038/s41598-020-59618-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 01/30/2020] [Indexed: 11/09/2022] Open
Abstract
We examined interethnic differences in the prevalence of neuroimaging markers of cerebrovascular and neurodegenerative disease in 3 major Asian ethnicities (Chinese, Malays, and Indians), as well as their role in cognitive impairment. 3T MRI brain scans were acquired from 792 subjects (mean age: 70.0 ± 6.5years, 52.1% women) in the multi-ethnic Epidemiology of Dementia In Singapore study. Markers of cerebrovascular disease and neurodegeneration were identified. Cognitive performance was evaluated using Mini Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), and a neuropsychological assessment. Compared to Chinese, Malays had a higher burden of intracranial stenosis (OR: 2.28. 95%CI: 1.23-4.20) and cortical atrophy (β: -0.60. 95%CI: -0.78, -0.41), while Indians had a higher burden of subcortical atrophy (β: -0.23. 95%CI: -0.40, -0.06). Moreover, Malay and Indian ethnicities were likely to be cognitively impaired (OR for Malays: 3.79. 95%CI: 2.29-6.26; OR for Indians: 2.87. 95%CI: 1.74-4.74) and showed worse performance in global cognition (β for Malays: -0.51. 95%CI: -0.66, -0.37; and Indians: -0.32. 95%CI: -0.47, -0.17). A higher burden of cerebrovascular and neurodegenerative markers were found in Malays and Indians when compared to Chinese. Further research is required to fully elucidate the factors and pathways that contribute to these observed differences.
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Synergistic interactions of Angiotensin Converting Enzyme (ACE) gene and Apolipoprotein E (APOE) gene polymorphisms with T1DM susceptibility in south India. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Zhang Y, Liu S, Yue W, Shi Z, Guan Y, Li M, Ji Y, Li X. Association of apolipoprotein E genotype with outcome in hospitalized ischemic stroke patients. Medicine (Baltimore) 2017; 96:e8964. [PMID: 29390290 PMCID: PMC5815702 DOI: 10.1097/md.0000000000008964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 11/02/2017] [Accepted: 11/08/2017] [Indexed: 01/27/2023] Open
Abstract
The aim of this study was to study the ability of the genotype to predict impairment and disability in hospitalized ischemic stroke (IS) patients after hospital discharge and 6 months after the onset of stroke symptoms.A total of 786 patients with a first IS were enrolled. Apolipoprotein E (ApoE) polymorphism was examined using polymerase chain reaction. Stroke subtype was classified using the Oxfordshire Community Stroke Project classification scheme and the Trial of Org 10172 in Acute Stroke Treatment criteria. Impairment as assessed using the National Institutes of Health Stroke Scale (NIHSS), and disability as measured using the modified Rankin Scale (mRS), were compared against the ApoE genotype.There was no significant association between the type of ApoE allele present and the stroke subtype. On multivariate regression analysis, the apolipoprotein EE4 allele genotype did not predict poor outcome at discharge and or at 6 months after stroke onset. A higher NIHSS score on admission, older age, and higher fasting glucose levels did predict poor outcome at hospital discharge. Higher glucose levels and higher NIHSS scores on admission were independent risk factors predicting poor neurologic status at 6 months after stroke onset.The presence of the apolipoprotein EE4 and apolipoprotein EE2 genotypes, although related to cholesterol and triglyceride levels, do not affect recovery during rehabilitation. A higher NIHSS score on admission and a higher fasting glucose level predict poor neurologic status, both at hospital discharge and 6 months after onset.
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Affiliation(s)
- Yajing Zhang
- Department of Neurology, The Second Hospital of Tianjin Medical University,Tianjin, China
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
| | - Shuling Liu
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
- School of Nursing, Peking University,Beijing, China
| | - Wei Yue
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
| | - Zhihong Shi
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
| | - Yalin Guan
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
| | - Mingzi Li
- School of Nursing, Peking University,Beijing, China
| | - Yong Ji
- Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
- Tianjin Key Laboratory of Cerebrovascular Disease and Neurodegenerative Disease, Tianjin Huanhu Hospital, Tianjin, China
| | - Xin Li
- Department of Neurology, The Second Hospital of Tianjin Medical University,Tianjin, China
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Larifla L, Armand C, Bangou J, Blanchet-Deverly A, Numeric P, Fonteau C, Michel CT, Ferdinand S, Bourrhis V, Vélayoudom-Céphise FL. Association of APOE gene polymorphism with lipid profile and coronary artery disease in Afro-Caribbeans. PLoS One 2017; 12:e0181620. [PMID: 28727855 PMCID: PMC5519172 DOI: 10.1371/journal.pone.0181620] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 07/04/2017] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES Apolipoprotein E gene (APOE) polymorphism is associated with the lipid profile and cardio-vascular disease. However, these relationships vary between ethnic groups. We evaluated, for the first time in an Afro-Caribbean population, the distribution of APOE polymorphisms and their associations with coronary artery disease (CAD), the lipid profile and other cardio-metabolic risk factors. METHODS We studied 712 Afro-Caribbean subjects including 220 with documented CAD and 492 healthy subjects. TaqMan assays were performed to genotype rs7412 and rs429358, the two variants that determine the APOE alleles ε2, ε3 and ε4. The association between APOE genotype and the lipid profile was analysed by comparing ε2 carriers, ε3 homozygotes and ε4 carriers. RESULTS The frequencies of ε2, ε3 and ε4 in the overall sample were 8%, 70% and 22%, respectively. CAD was not associated with APOE polymorphism. The total cholesterol level was higher in ε4 carriers compared with ε2 carriers: 5.07 vs 4.59 mmol/L (P = 0.016). The LDL-cholesterol level was lower in APOE ε2 carriers compared with ε3 homozygotes and ε4 carriers: 2.65 vs 3.03 and 3.17 mmol/L, respectively (p = 0.002). The total cholesterol/HDL-cholesterol and LDL-cholesterol/HDL-cholesterol ratios were similar in the three allelic groups. APOE polymorphism was not associated with diabetes, hypertension, waist circumference or body mass index. CONCLUSIONS Our results indicate that APOE gene polymorphism is associated with the lipid profile but not with CAD in Afro-Caribbean people. This lack of association with CAD may be explained by the low atherogenic profile observed in ε4 carriers, which may warrant further investigation.
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Affiliation(s)
- Laurent Larifla
- Research Group Clinical Epidemiology and Medicine, ECM/L.A.M.I.A EA 4540, University of Antilles, Pointe-à-Pitre, France
- Department of Cardiology, University Hospital of Guadeloupe, Pointe-à-Pitre, France
- * E-mail: ,
| | - Christophe Armand
- Research Group Clinical Epidemiology and Medicine, ECM/L.A.M.I.A EA 4540, University of Antilles, Pointe-à-Pitre, France
- Department of Medical Information and Public Health, University Hospital of Guadeloupe, Pointe-à-Pitre, France
| | - Jacqueline Bangou
- Research Group Clinical Epidemiology and Medicine, ECM/L.A.M.I.A EA 4540, University of Antilles, Pointe-à-Pitre, France
- Biochemistry Unit, University Hospital of Guadeloupe, Pointe-à-Pitre, France
| | - Anne Blanchet-Deverly
- Research Group Clinical Epidemiology and Medicine, ECM/L.A.M.I.A EA 4540, University of Antilles, Pointe-à-Pitre, France
| | - Patrick Numeric
- Department of Internal Medicine Unit, University Hospital of Martinique, Fort-de France, France
| | - Christiane Fonteau
- Biochemistry Unit, University Hospital of Martinique, Fort-de France, France
| | - Carl-Thony Michel
- Department of Cardiology, University Hospital of Guadeloupe, Pointe-à-Pitre, France
| | - Séverine Ferdinand
- Department of Medical Information and Public Health, University Hospital of Guadeloupe, Pointe-à-Pitre, France
| | - Véronique Bourrhis
- Department of Medicine, University Hospital of Guadeloupe, Pointe-à-Pitre, France
| | - Fritz-Line Vélayoudom-Céphise
- Research Group Clinical Epidemiology and Medicine, ECM/L.A.M.I.A EA 4540, University of Antilles, Pointe-à-Pitre, France
- Department of Endocrinology and Diabetology, University Hospital of Guadeloupe, Pointe-à-Pitre, France
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Sivadas A, Salleh MZ, Teh LK, Scaria V. Genetic epidemiology of pharmacogenetic variants in South East Asian Malays using whole-genome sequences. THE PHARMACOGENOMICS JOURNAL 2016; 17:461-470. [PMID: 27241059 DOI: 10.1038/tpj.2016.39] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 03/16/2016] [Accepted: 05/02/2016] [Indexed: 12/28/2022]
Abstract
Expanding the scope of pharmacogenomic research by including multiple global populations is integral to building robust evidence for its clinical translation. Deep whole-genome sequencing of diverse ethnic populations provides a unique opportunity to study rare and common pharmacogenomic markers that often vary in frequency across populations. In this study, we aim to build a diverse map of pharmacogenetic variants in South East Asian (SEA) Malay population using deep whole-genome sequences of 100 healthy SEA Malay individuals. We investigated the allelic diversity of potentially deleterious pharmacogenomic variants in SEA Malay population. Our analysis revealed 227 common and 466 rare potentially functional single nucleotide variants (SNVs) in 437 pharmacogenomic genes involved in drug metabolism, transport and target genes, including 74 novel variants. This study has created one of the most comprehensive maps of pharmacogenetic markers in any population from whole genomes and will hugely benefit pharmacogenomic investigations and drug dosage recommendations in SEA Malays.
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Affiliation(s)
- A Sivadas
- GN Ramachandran Knowledge Center for Genome Informatics, CSIR Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi, India
| | - M Z Salleh
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Malaysia, Puncak Alam, Selangor, Malaysia.,Faculty of Pharmacy, Universiti Teknologi MARA (UiTM) Malaysia, Puncak Alam, Selangor, Malaysia
| | - L K Teh
- Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA (UiTM) Malaysia, Puncak Alam, Selangor, Malaysia.,Faculty of Pharmacy, Universiti Teknologi MARA (UiTM) Malaysia, Puncak Alam, Selangor, Malaysia
| | - V Scaria
- GN Ramachandran Knowledge Center for Genome Informatics, CSIR Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi, India
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14
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Al-Asmary SM, Kadasah S, Arfin M, Tariq M, Al-Asmari A. Apolipoprotein E polymorphism is associated with susceptibility to schizophrenia among Saudis. Arch Med Sci 2015; 11:869-76. [PMID: 26322100 PMCID: PMC4548040 DOI: 10.5114/aoms.2015.53308] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 07/12/2013] [Accepted: 09/10/2013] [Indexed: 01/12/2023] Open
Abstract
INTRODUCTION Apolipoprotein E (APOE) genotypes influence the phenotype of several neurodegenerative disorders including Alzheimer's and Parkinson disease and may affect schizophrenia pathogenesis. This study was undertaken to determine the association between APOE gene polymorphisms and schizophrenia in the Saudi population. MATERIAL AND METHODS APOE allele and genotype frequencies were studied in 380 Saudi subjects including schizophrenia patients and matched controls using polymerase chain reaction (PCR) and reverse-hybridization techniques. RESULTS The frequencies of the APOE allele ε2 and genotypes ε2/ε3 and ε2/ε4 were significantly higher in the schizophrenia patients as compared to controls, suggesting that the ε2 allele and its heterozygous genotypes may increase the susceptibility to schizophrenia. In contrast, the frequencies of the ε3 allele and ε3/ε3 genotype were lower in patients as compared to controls, suggesting a protective effect of APOE ε3 for schizophrenia. This study indicated that APOE ε4 was differentially associated with schizophrenia depending on the symptoms as the frequency of the ε4 allele was significantly higher in schizophrenia patients with positive symptoms. By contrast, no significant association between APOE ε4 and schizophrenia patients with negative symptoms was observed. Genotypes ε2/ε2 and ε4/ε4 were absent in patients and controls. Moreover, the age of onset was significantly lower in patients with the APOE ε2/ε3 genotype. There was no significant difference in the frequencies of APOE alleles and genotypes between male and female schizophrenia patients. CONCLUSIONS The results of this study clearly show that APOE alleles and genotypes are associated with risk of developing schizophrenia and early age of onset in Saudis.
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Affiliation(s)
| | - Saeed Kadasah
- Department of Psychiatry, Riyadh Military Hospital, Riyadh, Saudi Arabia
| | - Misbahul Arfin
- Research Center, Riyadh Military Hospital, Riyadh, Saudi Arabia
| | - Mohammad Tariq
- Research Center, Riyadh Military Hospital, Riyadh, Saudi Arabia
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No change of the lipid profile under the control of ApoE gene polymorphism in schizophrenics under paliperidone treatment. Psychiatr Q 2014; 85:487-96. [PMID: 25085446 DOI: 10.1007/s11126-014-9309-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The present study tried to explore the effects of Paliperidone on the lipid profiles of schizophrenia patients. One hundred twenty-nine subjects diagnosed with schizophrenia were enrolled into this study and completed the lipid profile evaluation. Their blood samples were obtained on the morning following a 12-hours fast. Cholesterol and triglyceride (TG) levels in plasma were determined, and lipoproteins were determined by enzymatic methods. All participants provided written informed consent, and underwent additional venous blood withdrawal for DNA extraction for genetic study of the ApoE gene polymorphism. Under T test, TC, TG and HDL levels all declined after Paliperidone treatment although with no statistically significant difference. The ratios of TC/HDL declined after Paliperidone treatment, but without statistically significant difference. After GEE-I analysis, we found that ApoE4 genotype (β = 34.471; p < 0.001) had a positive effect on the total cholesterol (TC) level; female had positive effect on the high-density lipoprotein (HDL) level (β = 15.361; p = 0.003); and age had a positive effect on the TG level (β = 1.317; p = 0.030). Smoking (β = 0.961; p = 0.016) had a positive effect on the ratio of TC/HDL change. Lipid profiles were not increased after Paliperidone treatment under the control of ApoE gene polymorphism.
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16
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Choi SW, Kweon SS, Choi JS, Rhee JA, Lee YH, Nam HS, Jeong SK, Park KS, Ryu SY, Kim HN, Song HR, Shin MH. Association between Apolipoprotein E Polymorphism and Chronic Kidney Disease in the Korean General Population: Dong-gu Study. Korean J Fam Med 2014; 35:276-82. [PMID: 25426275 PMCID: PMC4242905 DOI: 10.4082/kjfm.2014.35.6.276] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 10/07/2014] [Indexed: 11/18/2022] Open
Abstract
Background Few studies have investigated the association between Apolipoprotein E (APOE) polymorphisms and chronic kidney disease (CKD) in the general population, and their results are inconsistent. Methods The current study population was composed of 9,033 subjects aged ≥ 50 years who participated in the baseline survey of the Dong-gu Study, which was conducted in Korea between 2007 and 2010. APOE polymorphisms were identified by polymerase chain reaction, and the estimated glomerular filtration rate (eGFR) was calculated using the Modification of Diet in Renal Disease equation. Results Individuals with the APOE E2 allele had significantly lower total and low density lipoprotein cholesterol levels, those with the APOE E4 allele had lower high density lipoprotein (HDL) cholesterol levels, and those with the APOE E3 allele had lower log-triglyceride levels. Adjusting for covariates (sex, age, body mass index, smoking, systolic blood pressure, hypertension, diabetes, total cholesterol, HDL cholesterol, log-transformed triglycerides, and log-transformed albumin to creatinine ratio), mean eGFR was not significantly different among APOE alleles (E2, 69.4 mL/min/1.73 m2; E3, 69.5 mL/min/1.73 m2; E4, 69.4 ml/min/1.73 m2; P = 0.873). Additionally, the odds ratios (ORs) indicated that APOE polymorphisms were not independent risk factors for CKD (OR, 1.07; 95% confidence interval [CI], 0.91 to 1.26 for the E2 vs. E3 allele; OR, 1.01; 95% CI, 0.88 to 1.16 for the E4 vs. E3 allele). Conclusion APOE polymorphisms were not associated with either eGFR or CKD in the general Korean population.
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Affiliation(s)
- Seong-Woo Choi
- Department of Preventive Medicine, Chosun University School of Medicine, Gwangju, Korea
| | - Sun-Seog Kweon
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea. ; Jeonnam Regional Cancer Center, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Jin-Su Choi
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Jung-Ae Rhee
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Young-Hoon Lee
- Department of Preventive Medicine & Institute of Wonkwang Medical Science, Wonkwang University College of Medicine, Iksan, Korea
| | - Hae-Sung Nam
- Department of Preventive Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seul-Ki Jeong
- Department of Neurology & Research Institute of Clinical Medicine, Chonbuk National University-Biomedical Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Kyeong-Soo Park
- Department of Preventive Medicine, Seonam University College of Medicine, Namwon, Korea
| | - So-Yeon Ryu
- Department of Preventive Medicine, Chosun University School of Medicine, Gwangju, Korea
| | - Hee Nam Kim
- Center for Creative Biomedical Scientists, Chonnam National University, Gwangju, Korea
| | - Hye-Rim Song
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Min-Ho Shin
- Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Korea
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Gao H, Tian Y, Meng H, Hou J, Xu L, Zhang L, Shi D, Lu R, Feng X, Wang X, Chen Z. Associations of apolipoprotein E and low-density lipoprotein receptor-related protein 5 polymorphisms with dyslipidemia and generalized aggressive periodontitis in a Chinese population. J Periodontal Res 2014; 50:509-18. [PMID: 25329009 DOI: 10.1111/jre.12237] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2014] [Indexed: 12/23/2022]
Affiliation(s)
- H. Gao
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - Y. Tian
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - H. Meng
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - J. Hou
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - L. Xu
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - L. Zhang
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - D. Shi
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - R. Lu
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - X. Feng
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - X. Wang
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
| | - Z. Chen
- Department of Periodontology; Peking University School and Hospital of Stomatology; Beijing China
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Downer B, Estus S, Katsumata Y, Fardo DW. Longitudinal trajectories of cholesterol from midlife through late life according to apolipoprotein E allele status. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2014; 11:10663-93. [PMID: 25325355 PMCID: PMC4211000 DOI: 10.3390/ijerph111010663] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/23/2014] [Accepted: 09/26/2014] [Indexed: 01/20/2023]
Abstract
BACKGROUND Previous research indicates that total cholesterol levels increase with age during young adulthood and middle age and decline with age later in life. This is attributed to changes in diet, body composition, medication use, physical activity, and hormone levels. In the current study we utilized data from the Framingham Heart Study Original Cohort to determine if variations in apolipoprotein E (APOE), a gene involved in regulating cholesterol homeostasis, influence trajectories of total cholesterol, HDL cholesterol, and total: HDL cholesterol ratio from midlife through late life. METHODS Cholesterol trajectories from midlife through late life were modeled using generalized additive mixed models and mixed-effects regression models. RESULTS APOE e2+ subjects had lower total cholesterol levels, higher HDL cholesterol levels, and lower total: HDL cholesterol ratios from midlife to late life compared to APOE e3 and APOE e4+ subjects. Statistically significant differences in life span cholesterol trajectories according to gender and use of cholesterol-lowering medications were also detected. CONCLUSION The findings from this research provide evidence that variations in APOE modify trajectories of serum cholesterol from midlife to late life. In order to efficiently modify cholesterol through the life span, it is important to take into account APOE allele status.
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Affiliation(s)
- Brian Downer
- Sealy Center on Aging, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555, USA.
| | - Steven Estus
- Department of Physiology, College of Medicine, University of Kentucky, 138 Leader Avenue, Lexington, KY 40506, USA.
| | - Yuriko Katsumata
- Department of Biostatistics, College of Public Health, University of Kentucky, Suite 205, 725 Rose Street, Lexington, KY 40536, USA.
| | - David W Fardo
- Sanders-Brown Center on Aging, University of Kentucky, 101 Sanders-Brown Building, 800 S. Limestone Street, Lexington, KY 40536, USA.
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Apolipoprotein E gene polymorphisms in Lebanese with hypercholesterolemia. Gene 2013; 522:84-8. [DOI: 10.1016/j.gene.2013.03.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 03/07/2013] [Indexed: 11/17/2022]
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Zhang J, Xuemei Zhang, Fan P, Liu R, Huang Y, Liang S, Liu Y, Wu Y, Bai H. Distribution and effect of apo E genotype on plasma lipid and apolipoprotein profiles in overweight/obese and nonobese Chinese subjects. J Clin Lab Anal 2012; 26:200-5. [PMID: 22628237 DOI: 10.1002/jcla.21494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Apolipoprotein E (apo E) polymorphism has been reported to influence some lipid profile abnormalities in some ethnic groups. This study was conducted mainly to examine the possible association of apo E polymorphism with overweight/obesity in a South West Chinese population. METHODS Four hundred and fifty-four Han Chinese (282 overweight/obese and 172 normal weight control subjects) in Chengdu area were studied using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. RESULTS The genotype and allele frequencies of apo E polymorphism in cases of overweight/obesity showed no significant statistical difference compared to those of controls. In the control group, both apo E4 and E3 allele carriers had the higher serum LDL-C and lower triglycerides (TGs) and apo E concentrations than those with apo E2 carriers, while apo E2 allele carriers had higher serum apo C-II levels than apo E3 carriers (P < 0.05). In overweight/obese group, genotype-related low density Lipoprotein-Cholesterol (LDL-C) variations were also evident, with the changes being in a same direction as the effect in the controls, and apo B100 levels were decreased and apo E increased in apo E2 allele carriers when compared with respective apo E4 and apo E4/apo E3 allele carriers (all P < 0.05). CONCLUSION Polymorphism of the apo E gene is associated with altered plasma LDL-C and TG, as well as apo B, apo C-II, and apo E concentrations. The effects on TG, apo B, and apo C-II levels are BMI dependent in Chinese population of Chengdu area.
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Affiliation(s)
- Juan Zhang
- Laboratory of Genetic Disease and Perinatal Medicine, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, P. R. China
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Catindig JAS, Venketasubramanian N, Ikram MK, Chen C. Epidemiology of dementia in Asia: Insights on prevalence, trends and novel risk factors. J Neurol Sci 2012; 321:11-6. [DOI: 10.1016/j.jns.2012.07.023] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 05/19/2012] [Accepted: 07/11/2012] [Indexed: 10/28/2022]
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Chaudhary R, Likidlilid A, Peerapatdit T, Tresukosol D, Srisuma S, Ratanamaneechat S, Sriratanasathavorn C. Apolipoprotein E gene polymorphism: effects on plasma lipids and risk of type 2 diabetes and coronary artery disease. Cardiovasc Diabetol 2012; 11:36. [PMID: 22520940 PMCID: PMC3372424 DOI: 10.1186/1475-2840-11-36] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 04/23/2012] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The most common apolipoprotein E (apoE) gene polymorphism has been found to influence plasma lipid concentration and its correlation with coronary artery disease (CAD) has been extensively investigated in the last decade. It is, however, unclear whether apoE gene polymorphism is also associated with increased risk of type 2 diabetes mellitus (T2DM). The knowledge of this study may provide the primary prevention for T2DM and CAD development before its initiation and progression. Therefore, this study was carried out to determine the association between apoE gene polymorphism and T2DM with and without CAD and its role in lipid metabolism. METHODS The case-control study was carried out on a total of 451 samples including 149 normal control subjects, 155 subjects with T2DM, and 147 subjects with T2DM complicated with CAD. The apoE gene polymorphism was tested by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Univariable and multivariable logistic regression analyses were used to identify the possible risks of T2DM and CAD. RESULTS A significantly increased frequency of E3/E4 genotype was observed only in T2DM with CAD group (p = 0.0004), whereas the ε4 allele was significantly higher in both T2DM (p = 0.047) and T2DM with CAD (p = 0.009) as compared with controls. E3/E4 genotype was also the independent risk in developing CAD after adjusting with established risk factors with adjusted odds ratio (OR) 2.52 (95%CI 1.28-4.97, p = 0.008). The independent predictor of individuals carrying ε4 allele still remained significantly associated with both CAD (adjusted OR 2.32, 95%CI 1.17-4.61, p = 0.016) and T2DM (adjusted OR 2.04, 95%CI 1.07-3.86, p = 0.029). After simultaneously examining the joint association of E3/E4 genotype combined with either obesity or smoking the risk increased to approximately 5-fold in T2DM (adjusted OR 4.93, 95%CI 1.74-13.98, p = 0.003) and 10-fold in CAD (adjusted OR 10.48, 95%CI 3.56-30.79, p < 0.0001). The association between apoE genotypes on plasma lipid levels was compared between E3/E3 as a reference and E4-bearing genotypes. E4-bearing genotypes showed lower HDL-C and higher VLDL-C and TG, whereas other values of plasma lipid concentrations showed no significant difference. CONCLUSIONS These results indicate that ε4 allele has influence on lipid profiles and is associated with the development of both T2DM with and without CAD, and furthermore, it increased the risk among the subjects with obesity and/or smoking, the conditions associated with high oxidative stress.
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Affiliation(s)
- Rajesh Chaudhary
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
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Vasunilashorn S, Glei DA, Lan CY, Brookmeyer R, Weinstein M, Goldman N. Apolipoprotein E is associated with blood lipids and inflammation in Taiwanese older adults. Atherosclerosis 2011; 219:349-54. [PMID: 21840004 PMCID: PMC3225086 DOI: 10.1016/j.atherosclerosis.2011.07.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/09/2011] [Accepted: 07/14/2011] [Indexed: 11/25/2022]
Abstract
Polymorphisms of the apolipoprotein E gene (ApoE) have been associated with health and longevity. Numerous studies have linked ApoE to health outcomes including cardiovascular disease and mortality, but far fewer studies have examined the relationship of ApoE to other biological markers of health. This study investigates the relationship between ApoE and mortality, as well as ApoE and a set of biomarkers related to cardiovascular and immune function, in a population-based sample of Taiwanese adults ages 54+. ApoE £2 carriers were less likely to have at-risk levels of high-density lipoprotein (HDL-C) and total cholesterol (total-C) than non-carriers (odds ratio [OR] 0.45, 95% confidence interval [CI] 0.25-0.83 and OR 0.45, 95% CI 0.29-0.71, respectively). ApoE £4 carriers were less likely to have elevated levels of C-reactive protein (CRP) than non-carriers (OR 0.62, 95% CI 0.39-0.96). ApoE genotype was not, however, associated with mortality after 8 years of follow-up. Our findings confirm the association between ApoE £2and cholesterol levels, suggesting a potential protective effect of ApoE £2 on blood lipids. They also contribute to reports on the relationship between ApoE £4 carrier status and lower CRP levels.
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APOE, MTHFR, LDLR and ACE Polymorphisms Among Angami and Lotha Naga Populations of Nagaland, India. J Community Health 2011; 36:975-85. [DOI: 10.1007/s10900-011-9397-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Subramaniam T, Nang EEK, Su Chi Lim, Yi Wu, Chin Meng Khoo, Lee J, Heng D, Suok Kai Chew, Wong TY, Shyong Tai E. Distribution of ankle—brachial index and the risk factors of peripheral artery disease in a multi-ethnic Asian population. Vasc Med 2011; 16:87-95. [DOI: 10.1177/1358863x11400781] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Peripheral artery disease (PAD) is a manifestation of systemic atherosclerosis and is associated with increased cardiovascular morbidity and mortality. We describe the prevalence and risk factors of PAD in a multi-ethnic Asian population (Chinese, Malays and Indians) in Singapore. The Singapore Prospective Study Program recruited 4132 individuals between 2004 and 2006 in which the ankle—brachial index (ABI) was measured using the Smartdop™ 20EX bi-directional blood flow detector. PAD was defined as ≤ 0.9 and a high ABI > 1.4, with ABI 1.11—1.20 as reference. The mean age (SD) of individuals in the study was 49.9 (11.8) years, with 51.8% females. PAD was present in 4.3% of the population and a high ABI (> 1.4) was rare. Malays and Indians had a higher risk (especially in females). Compared to those with an ABI between 1.11 and 1.20, those with PAD were more likely to be of Malay and Indian ethnicity, female sex, with higher systolic blood pressure and pulse pressure, with increased prevalence of diabetes mellitus, hypertension, albuminuria and renal impairment, and with a past history of stroke. In conclusion, in this large multi-ethnic Asian population, we document the distribution and risk factor associations for PAD. PAD shows an ethnic distribution similar to that of coronary artery disease in Singapore, with differences in sex distribution. Apart from traditional vascular risk factors, pulse pressure, renal impairment and a past history of stroke are important determinants of PAD.
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Affiliation(s)
| | - Ei Ei Khaing Nang
- Department of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Su Chi Lim
- Department of Medicine, Khoo Teck Puat Hospital, Singapore
| | - Yi Wu
- Department of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Chin Meng Khoo
- Department of Medicine, National University Hospital, Singapore
| | - Jeannette Lee
- Department of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Derrick Heng
- Epidemiology and Disease Control Division, Ministry of Health, Singapore
| | - Suok Kai Chew
- Epidemiology and Disease Control Division, Ministry of Health, Singapore
| | - Tien Y Wong
- Centre for Eye Research Australia, University of Melbourne, Melbourne, Victoria, Australia, Singapore Eye Research Institute, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - E. Shyong Tai
- Department of Epidemiology and Public Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Department of Medicine, National University Hospital, Singapore
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Tong TYY, Yong RYY, Goh VHH, Liang S, Chong APL, Mok HPP, Yong EL, Yap EPH, Moochhala S. Association between an intronic apolipoprotein E polymorphism and bone mineral density in Singaporean Chinese females. Bone 2010; 47:503-10. [PMID: 20546958 DOI: 10.1016/j.bone.2010.05.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Revised: 04/26/2010] [Accepted: 05/17/2010] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Apolipoprotein E (ApoE) is implicated in the pathogenesis of osteoporosis. OBJECTIVE To investigate possible association of the non-classical APOE gene +113C/G (rs440446) intron 1 enhancer polymorphism with bone mineral density (BMD) in a homogeneous Chinese population in Singapore. METHODS A total of 655 volunteers, males and females, aged between 31 and 72 years, from the public participated. BMD was measured using dual-energy X-ray absorptiometry and APOE +113C/G (rs440446) genotypes were determined by Sequenom MassARRAY system. To adjust for potential confounders, anthropometric, demographic, and lifestyle determinants were obtained, and serum lipids and E(2) were measured. RESULTS The +113C/G (rs440446) polymorphism within the APOE gene was associated with BMD in Chinese Singaporean females only. Females with the heterozygous CG genotype were significantly associated with reduced total, lumbar spine, and femoral neck of hip BMD, after multilevel adjustment of confounders. The association was stronger in the spine than in the hip. When females were stratified according to WHO classification for osteoporosis, those with CG and GG genotypes had increased risk (OR 3.50 and 2.22, respectively) of developing osteopenia/osteoporosis in the lumbar spine. Serum lipids did not explain the influence of APOE +113 C/G (rs440446) on BMD. CONCLUSION This study demonstrated an association between APOE +113C/G (rs440446) polymorphism with measures of BMD in Singaporean Chinese females.
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Affiliation(s)
- Terry Y Y Tong
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University Health System, 119074, Singapore.
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Association Between Apoliprotein E Gene Polymorphism and Hypercholesterolemic Phenotype in Maracaibo, Zulia State, Venezuela. Am J Ther 2010; 17:330-6. [DOI: 10.1097/mjt.0b013e3181c1235d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Daneshpour MS, Hedayati M, Eshraghi P, Azizi F. Association of Apo E gene polymorphism with HDL level in Tehranian population. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900207] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Zhang L, Qiao Q, Tuomilehto J, Janus ED, Lam TH, Ramachandran A, Mohan V, Stehouwer CDA, Dong Y, Nakagami T, Onat A, Söderberg S. Distinct ethnic differences in lipid profiles across glucose categories. J Clin Endocrinol Metab 2010; 95:1793-801. [PMID: 20118302 DOI: 10.1210/jc.2009-2348] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
CONTEXT Dyslipidemia coexists with hyperglycemia. However, little is known about the ethnic differences in lipid profiles at comparable glucose tolerance status. OBJECTIVE The aim was to study ethnic differences in lipid profiles stratified by glucose levels. DESIGN AND SETTING Data from 31 study cohorts of 12 countries, consisting of 24,760 men and 27,595 women aged 25-74 yr, were compared. The odds ratio for having dyslipidemia was estimated for each ethnic group stratified by glucose categories. RESULTS Compared with central and northern Europeans, multivariable adjusted odds ratios (95% confidence intervals) for having lower high-density lipoprotein-cholesterol were 4.74 (4.19-5.37), 5.05 (3.88-6.56), 3.07 (2.15-4.40), and 2.37 (1.67-3.35) in Asian Indian men, but 0.12 (0.09-0.16), 0.07 (0.04-0.13), 0.11 (0.07-0.20), and 0.16 (0.08-0.32) in Chinese men who had normoglycemia, prediabetes, and undiagnosed and diagnosed diabetes, respectively. Similar results were obtained for women. The prevalence of low high-density lipoprotein-cholesterol remained higher in Asian Indians (62.8% of the nondiabetic and 67.4% of the diabetic) than in central and northern Europeans (20.3 and 37.3%), Japanese (25.7 and 34.1%), or Qingdao Chinese (15.7 and 17.0%), even in individuals with low-density lipoprotein-cholesterol of less than 3 mmol/liter. CONCLUSION There are distinct patterns of lipid profiles associated with ethnicity regardless of the glucose levels, suggesting that ethnic-specific strategies and guidelines on risk assessment and prevention of cardiovascular disease are required.
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Affiliation(s)
- Lei Zhang
- Department of Public Health, University of Helsinki, PL41, Mannerheimintie 172, FIN-00014 Helsinki, Finland
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Hu P, Qin YH, Jing CX, Lu L, Hu B, Du PF. Does the geographical gradient of ApoE4 allele exist in China? A systemic comparison among multiple Chinese populations. Mol Biol Rep 2010; 38:489-94. [DOI: 10.1007/s11033-010-0132-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2009] [Accepted: 03/23/2010] [Indexed: 11/24/2022]
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De Silva DA, Woon FP, Chen CLH, Chang HM, Wong MC. Ethnic South Asian ischaemic stroke patients have a higher prevalence of a family history of vascular disease compared to age, gender and diabetes-matched ethnic Chinese subjects. J Neurol Sci 2009; 285:118-20. [DOI: 10.1016/j.jns.2009.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Revised: 05/26/2009] [Accepted: 06/10/2009] [Indexed: 10/20/2022]
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Tasdemir N, Tamam Y, Toprak R, Tamam B, Tasdemir MS. Association of Apolipoprotein E Genotype and Cerebrovascular Disease Risk Factors in a Turkish Population. Int J Neurosci 2009; 118:1109-29. [DOI: 10.1080/00207450701769190] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tamam Y, Tasdemir N, Toprak R, Tamam B, Iltumur K. Apolipoprotein E genotype in patients with cerebrovascular diseases and its effect on the disease outcome. Int J Neurosci 2009; 119:919-35. [PMID: 19466630 DOI: 10.1080/00207450802686350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A total of 100 hospitalized stroke patients and 30 healthy controls were included in a study aiming to determine the predictive role of ApoE genotype polymorphism for stroke outcome in the Turkish population. The most frequent ApoE genotype was epsilon3/3 reflecting Asian population polymorphic distribution. ApoE polymorphism in the Eastern Turkish population was found to be independent of stroke type, OSCP subtypes of infarction, localization of hemorrhage, severity of carotid artery stenosis, and resultant stroke outcome. Distinct polymorphic results in populations from nearby regions suggest a multifactorial pathogenesis and presence of very complex genetic factors in the development of stroke and stroke outcome.
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Affiliation(s)
- Yusuf Tamam
- Department of Neurology, Medical School Dicle University, Diyarbakir, Turkey.
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Burman D, Mente A, Hegele RA, Islam S, Yusuf S, Anand SS. Relationship of the ApoE polymorphism to plasma lipid traits among South Asians, Chinese, and Europeans living in Canada. Atherosclerosis 2009; 203:192-200. [PMID: 18656198 DOI: 10.1016/j.atherosclerosis.2008.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2008] [Revised: 06/11/2008] [Accepted: 06/11/2008] [Indexed: 11/28/2022]
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Sahadevan S, Saw SM, Gao W, Tan LCS, Chin JJ, Hong CY, Venketasubramanian N. Ethnic differences in Singapore's dementia prevalence: the stroke, Parkinson's disease, epilepsy, and dementia in Singapore study. J Am Geriatr Soc 2008; 56:2061-8. [PMID: 19016940 DOI: 10.1111/j.1532-5415.2008.01992.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To study the prevalence of dementia in Singapore among Chinese, Malays, and Indians. DESIGN A two-phase, cross-sectional study of randomly selected population from central Singapore with disproportionate race stratification. SETTING Community-based study. Subjects screened to have cognitive impairment at phase 1 in their homes were evaluated clinically for dementia at phase 2 in nearby community centers. PARTICIPANTS Fourteen thousand eight hundred seventeen subjects aged 50 and older (67% participation rate). MEASUREMENTS The locally validated Abbreviated Mental Test was used to screen for cognitive impairment at phase 1. Dementia was diagnosed at phase 2 as per Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition criteria. Possible Alzheimer's disease (AD) and possible vascular dementia (VD) were diagnosed along the National Institute of Neurological and Communicative Disorders-Alzheimer's Disease and Related Disorders Association and National Institute of Neurological Disorders and Stroke-Association Internationale pour la Recherche et l'Enseignement en Neuroscienes criteria, respectively. RESULTS The overall age- and race-standardized dementia prevalence was 1.26% (95% confidence interval (CI)=1.10-1.45). Prevalence (in 5-year age bands) was 0.08% (50-54), 0.08% (55-59), 0.44% (60-64), 1.16% (65-69), 1.84% (70-74), 3.26% (75-79), 8.35% (80-84), and 16.42% (>/=85). From age 50 to 69, 65% of dementia cases were VD; at older ages, 60% were AD. Logistic regression (adjusted for age, sex, education) showed that Malays had twice the risk for AD as Chinese, and Indians had more than twice the risk for AD and VD than Chinese. CONCLUSION Singapore's dementia prevalence, primarily influenced by its Chinese majority, is lower than seen in the West. The striking interethnic differences suggest a need for a dementia incidence study and further investigation of underlying genetic and cultural differences between the three ethnic groups in relation to dementia risk.
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Affiliation(s)
- Suresh Sahadevan
- Department of General Medicine, Tan Tock Seng Hospital, Singapore.
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Chaaba R, Attia N, Hammami S, Smaoui M, Hamda KB, Mahjoub S, Hammami M. The effect of apolipoprotein E polymorphism on plasma cholesteryl ester transfer protein activity in type 2 diabetic patients. Mol Biol 2008. [DOI: 10.1134/s0026893308060010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nonyane BAS, Foulkes AS. Application of two machine learning algorithms to genetic association studies in the presence of covariates. BMC Genet 2008; 9:71. [PMID: 19014573 PMCID: PMC2620353 DOI: 10.1186/1471-2156-9-71] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Accepted: 11/14/2008] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Population-based investigations aimed at uncovering genotype-trait associations often involve high-dimensional genetic polymorphism data as well as information on multiple environmental and clinical parameters. Machine learning (ML) algorithms offer a straightforward analytic approach for selecting subsets of these inputs that are most predictive of a pre-defined trait. The performance of these algorithms, however, in the presence of covariates is not well characterized. METHODS AND RESULTS In this manuscript, we investigate two approaches: Random Forests (RFs) and Multivariate Adaptive Regression Splines (MARS). Through multiple simulation studies, the performance under several underlying models is evaluated. An application to a cohort of HIV-1 infected individuals receiving anti-retroviral therapies is also provided. CONCLUSION Consistent with more traditional regression modeling theory, our findings highlight the importance of considering the nature of underlying gene-covariate-trait relationships before applying ML algorithms, particularly when there is potential confounding or effect mediation.
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Affiliation(s)
- Bareng AS Nonyane
- Division of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA, USA
| | - Andrea S Foulkes
- Division of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts Amherst, MA, USA
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Association between apolipoprotein E polymorphism, lipids, and coronary artery disease in Tunisian type 2 diabetes. J Clin Lipidol 2008; 2:360-4. [PMID: 21291761 DOI: 10.1016/j.jacl.2008.08.441] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2008] [Revised: 08/11/2008] [Accepted: 08/11/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND The relationship between apolipoprotein E (ApoE) polymorphism, fasting lipid parameters, and coronary artery disease (CAD) is controversial. METHODS We studied this relationship, for the first time, in Tunisian type 2 diabetic patients. The studied population comprised 157 type 2 diabetic patients (145 of them were not on any lipid-lowering drugs). Fasting lipids were measured by enzymatic methods and ApoE genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism. RESULTS Our results showed that the alleles E2, E3, and E4 were found in 4%, 88%, and 8% of patients, respectively. In the total type 2 diabetic population, no association was found between ApoE polymorphism, lipid parameters, and CAD. However, the E4 allele was associated with elevated low-density lipoprotein cholesterol concentration and with CAD in type 2 diabetic men. CONCLUSION The effect of ApoE polymorphism on CAD is gender-dependent in the Tunisian type 2 diabetic population. ApoE 4 allele may enhance atherogenesis indirectly by a strong effect on low-density lipoprotein cholesterol.
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Wood KC, Fullerton MD, El-Sohemy A, Bakovic M. Interactions between hepatic lipase and apolipoprotein E gene polymorphisms affect serum lipid profiles of healthy Canadian adults. Appl Physiol Nutr Metab 2008; 33:761-8. [DOI: 10.1139/h08-054] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of this study was to assess the individual and interactive effects between hepatic lipase (LIPC; C-514T, G-250A) and apolipoprotein E (APOE) (E2, E3, E4) gene polymorphisms on levels of plasma lipoprotein cholesterol and triglyceride among healthy, young, Canadian adults (n = 440). All subjects with at least one APOE2 allele had significantly lower low-density lipoprotein cholesterol, total cholesterol, and total cholesterol – high-density lipoprotein cholesterol ratio when compared with those with the APOE3 or APOE4 allele. There were significant differences in the LIPC allele and genotype frequencies between Caucasian (n = 207) and Asian (n = 211) individuals, but ethnicity did not contribute to the variations in circulating lipids. In addition, the lowest triglyceride levels (0.87 ± 0.27 mmol·mL–1) were found in all APOE2 individuals carrying LIPC-514-CC and LIPC-250-GG genotypes, whereas the highest triglyceride levels (1.29 ± 0.34 –1.32 ± 0.32 mmol·mL–1) were found in APOE2 individuals carrying the opposite genotypes, LIPC-514TT and LIPC-250AA. These observations, distinct from the anti-atherogenic effects of APOE2 through the lowering of low-density lipoprotein cholesterol and LIPC on high-density lipoprotein cholesterol, suggest that there is an interactive effect between APOE and LIPC genotypes on plasma triglyceride levels. These results provide the basis for further studies on establishing which genotype combinations would be the most protective against hypertriglyceridemia.
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Affiliation(s)
- Kevin C.M. Wood
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, N1G 2W1
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, M5S 3E2
| | - Morgan D. Fullerton
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, N1G 2W1
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, M5S 3E2
| | - Ahmed El-Sohemy
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, N1G 2W1
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, M5S 3E2
| | - Marica Bakovic
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, N1G 2W1
- Department of Nutritional Sciences, University of Toronto, Toronto, ON, M5S 3E2
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Liang S, Pan M, Geng HH, Chen H, Gu LQ, Qin XT, Qian JJ, Zhu JH, Liu CF. Apolipoprotein E polymorphism in normal Han Chinese population: frequency and effect on lipid parameters. Mol Biol Rep 2008; 36:1251-6. [PMID: 18600472 DOI: 10.1007/s11033-008-9305-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 06/20/2008] [Indexed: 12/01/2022]
Abstract
Apolipoprotein E (ApoE) genotypes were studied in order to determine the prevalence and effect on lipid parameters in normal Han Chinese population. Fragments of ApoE gene forth exon containing codon 112 and 158 polymorphic locus were amplified by PCR, and then digested with Cfo I endonuclease. Genotypes and alleles frequencies of 168 healthy Han Chinese were calculated. The frequency of genotypes epsilon3/3, epsilon3/4, and epsilon2/3 was found to be 75.00, 10.70, and 11.90%, respectively, and 0.60, 1.20, and 0.60% for epsilon2/2, epsilon2/4, and epsilon4/4. The effects of ApoE genotypes and alleles on lipid parameters were analyzed. The effects of ApoE alleles on TC, LDL-C, ApoB was: along a decreasing gradient epsilon4 > epsilon3 > epsilon2. The effect of epsilon4 allele was to increase serum levels of TC, LDL-C and ApoB, and epsilon2 allele had an effect opposite to that of epsilon4 allele. Results obtained in this study indicate that ApoE polymorphism is an independent genetic factor on individual serum levels of lipids and apolipoproteins.
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Affiliation(s)
- Shu Liang
- Department of Neurology, Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215000, People's Republic of China
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Yin R, Pan S, Wu J, Lin W, Yang D. Apolipoprotein E gene polymorphism and serum lipid levels in the Guangxi Hei Yi Zhuang and Han populations. Exp Biol Med (Maywood) 2008; 233:409-18. [PMID: 18367629 DOI: 10.3181/0709-rm-254] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Hei Yi Zhuang is an isolated subgroup of the Zhuang minority in China. Little is known about the distribution of apolipoprotein (apo) E genetic variations and its role in lipid metabolism in this population. The present study was undertaken to compare the effect of apoE gene polymorphism on serum lipid levels between the Guangxi Hei Yi Zhuang and Han populations. A total of 873 subjects of Hei Yi Zhuang and 867 participants of Han Chinese were surveyed by a stratified randomized cluster sampling. Genotyping of apoE was performed using polymerase chain reaction and restriction fragment length polymorphism. The frequencies of 2, 3, and 4 alleles were 15.23%, 79.84%, and 4.93% in Hei Yi Zhuang, and 9.23%, 81.43%, and 9.34% in Han (P < 0.001); respectively. The frequencies of 2/ 2, 2/ 3, 2/ 4, 3/ 3, 3/ 4, and 4/ 4 genotypes were 4.70%, 17.86%, 3.21%, 68.16%, 5.50%, and 0.57% in Hei Yi Zhuang, and 2.54%, 9.23%, 4.15%, 70.70%, 12.23%, and 1.15% in Han (P < 0.001); respectively. Total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and apoB levels were lower in Hei Yi Zhuang than in Han (P < 0.01-0.001), but high-density lipoprotein cholesterol (HDL-C) levels and the ratio of apoA-I to apoB were higher in Hei Yi Zhuang than in Han (P < 0.001 for each). There were significant differences in TC, HDL-C, LDL-C, and apoB levels among the six genotypes in both ethnic groups (P < 0.01-0.001). Hyperlipidemia was positively correlated with age, body mass index, hypertension, alcohol consumption, and apoE allele in both populations (P < 0.05-0.001). TC, LDL-C, and apoB levels were positively correlated, and HDL-C levels were negatively associated with apoE genotypes in both ethnic groups (P < 0.001 for all). The differences in the lipid profiles between Hei Yi Zhuang and Han Chinese might partly attribute to the differences in apoE genotypic and allelic frequencies.
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Affiliation(s)
- Ruixing Yin
- Department of Cardiology, Institute of Cardiovascular Diseases, Guangxi Medical University, 22 Shuangyong Road, Nanning 530021, Guangxi, P. R. China.
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Millar JS, Brousseau ME, Diffenderfer MR, Barrett PHR, Welty FK, Cohn JS, Wilson A, Wolfe ML, Nartsupha C, Schaefer PM, Digenio AG, Mancuso JP, Dolnikowski GG, Schaefer EJ, Rader DJ. Effects of the cholesteryl ester transfer protein inhibitor torcetrapib on VLDL apolipoprotein E metabolism. J Lipid Res 2008; 49:543-9. [DOI: 10.1194/jlr.m700268-jlr200] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Hedlund E, Lange A, Hammar N. Acute myocardial infarction incidence in immigrants to Sweden. Country of birth, time since immigration, and time trends over 20 years. Eur J Epidemiol 2007; 22:493-503. [PMID: 17636418 DOI: 10.1007/s10654-007-9147-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2006] [Accepted: 05/29/2007] [Indexed: 11/24/2022]
Abstract
This study investigates incidence of first acute myocardial infarction (MI) among foreign born persons in Sweden using case control methods, taking into consideration country of birth, gender, socio-economic group and time since immigration and evaluates if the decreasing incidence of MI in Sweden during the study period was also present in immigrants. The study base consisted of persons 30-74 years of age in Stockholm County 1977-96. All incident cases of first acute MI in the study population were identified using registers of hospital discharges and deaths. Controls were selected randomly from the study base and the sampling fractions were known, enabling estimates of person time at risk. Foreign born subjects had a higher incidence of MI than subjects born in Sweden (men RR[Relative risk]=1,17; 95% CI 1,13-1,21; women RR = 1,15; 95% CI 1,09-1,21) after adjustment for calendar year, age and socio-economic group. An increased incidence was present primarily in subjects born in Finland, other Nordic countries, Poland, Turkey, Syria and South Asia in both genders, from the Netherlands among men and from Iraq among women and was still present after more than 20 years in Sweden. The incidence rate of MI 1977-96 among foreign born persons followed the general decline in the Swedish population. We conclude that foreign born persons in Sweden have an increased incidence of first MI which persists several years after immigration and is not explained by socio-economic differences. It is likely that this to an important extent has a background in factors in the country of origin.
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Affiliation(s)
- Ebba Hedlund
- Department of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Minihane AM, Jofre-Monseny L, Olano-Martin E, Rimbach G. ApoE genotype, cardiovascular risk and responsiveness to dietary fat manipulation. Proc Nutr Soc 2007; 66:183-97. [PMID: 17466101 DOI: 10.1017/s0029665107005435] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cardiovascular risk is determined by the complex interactions between genetic and environmental factors. The apoE genotype represents the most-widely-studied single nucleotide polymorphism in relation to CVD risk, with >3600 publications cited in PubMed. Although originally described as a mediator of lipoprotein metabolism, the lipoprotein-independent functions of apoE are being increasingly recognised, with limited data available on the potential impact of genotype on these metabolic processes. Furthermore, although meta-analyses suggest that apoE4 carriers may have a 40-50% increased CVD risk, the associations reported in individual studies are highly heterogeneous and it is recognised that environmental factors such as smoking status and dietary fat composition influence genotype-phenotype associations. However, information is often derived from observational studies or small intervention trials in which retrospective genotyping of the cohort results in small group sizes in the rarer E2 and E4 subgroups. Either larger well-standardised intervention trials or smaller trials with prospective recruitment according to apoE genotype are needed to fully establish the impact of diet on genotype-CVD associations and to establish the potential of dietary strategies such as reduced total fat, saturated fat, or increased antioxidant intakes to counteract the increased CVD burden in apoE4 carriers.
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Affiliation(s)
- A M Minihane
- Hugh Sinclair Unit of Human Nutrition, School of Chemistry, Food Biosciences and Pharmacy, University of Reading, Reading RG6 6AP, UK.
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Pei WD, Zhang YH, Sun YH, Gu YC, Wang YF, Zhang CY, Zhang J, Liu LS, Hui RT, Liu YQ, Yang YJ. Apolipoprotein E polymorphism influences lipid phenotypes in Chinese families with familial combined hyperlipidemia. Circ J 2007; 70:1606-10. [PMID: 17127808 DOI: 10.1253/circj.70.1606] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Apolipoprotein E (apoE) polymorphism is associated with changes in the lipoprotein profile of individuals with familial combined hyperlipidemia (FCHL), but its effects on the lipoprotein profiles of members of Chinese families with FCHL remain uncertain. METHODS AND RESULTS 43 FCHL families (n=449) and 9 normolipidemic families (n=73) were recruited to assess the influence of apoE polymorphism on plasma lipids. The relative frequency of the epsilon4 allele in affected and unaffected FCHL relatives, spouses and normolipidemic members was 13.8%, 5.3%, 9.1% and 6.8%, respectively, with a significantly higher frequency in affected FCHL relatives, compared with unaffected FCHL relatives or normolipidemic members (p=0.0002 or p=0.029). In FCHL relatives, the apoE4 subset (E4/4 and E4/3) exhibited significantly higher levels of apoB, total cholesterol and low-density lipoprotein-cholesterol (LDL-C) than did the apoE3 (E3/3) subset, especially in women (all p<0.05), and there was significant elevation of LDL-C concentrations in men only (p<0.05). In men, the apoE2 (E3/2) subset indicated a decreased level of apoB and increased apoA1 compared with those in the apoE3 subset (p<0.05). CONCLUSIONS ApoE polymorphism appears to be associated with variance of the lipoprotein phenotype in Chinese families with FCHL.
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Affiliation(s)
- Wei-Dong Pei
- Division of Cardiology, Cardiovascular Institute and Fu Wai Heart Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Merchant AT, Anand SS, Kelemen LE, Vuksan V, Jacobs R, Davis B, Teo K, Yusuf S. Carbohydrate intake and HDL in a multiethnic population. Am J Clin Nutr 2007; 85:225-30. [PMID: 17209200 DOI: 10.1093/ajcn/85.1.225] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Ethnic differences in serum lipids are not explained by genetics, central adiposity, lifestyle, or diet, possibly because dietary carbohydrate has not been considered. OBJECTIVE The aim was to evaluate the relation between carbohydrate intake and HDL and triacylglycerol concentrations in a multiethnic population. DESIGN We conducted a population-based cross-sectional study of 619 Canadians of Aboriginal, South Asian, Chinese, and European origin with no previously diagnosed medical conditions. Energy-adjusted carbohydrate intake was measured by a validated food-frequency questionnaire. RESULTS South Asians consumed the most carbohydrate, followed by European, Aboriginal, and Chinese persons. Mean (95% CI) HDL concentrations in the lowest and highest categories of carbohydrate intake after adjustment for age, sex, ethnicity, physical activity, smoking, the waist-to-hip ratio, body mass index, alcohol intake, and intakes of total energy, protein, and fiber were 1.21 mmol/L (1.16, 1.27 mmol/L) and 1.08 mmol/L (1.02, 1.13 mmol/L), respectively, and HDL cholesterol was significantly (P < 0.01) higher in the lowest tertile of carbohydrate intake than in the highest tertile. High carbohydrate intake was associated with higher fasting triacylglycerols (P = 0.04); the adjusted mean fasting triacylglycerol concentrations in the lowest and highest categories of carbohydrate intake were 1.43 mmol/L (1.28, 1.60 mmol/L) and 1.71 mmol/L (1.57, 1.87 mmol/L), respectively. Fewer servings of sugar-containing soft drinks, juices, and snacks were associated with higher HDL (P for trend = 0.02); the multivariate-adjusted mean HDL in the lowest and highest categories of carbohydrate intake was 1.22 mmol/L (1.17, 1.27 mmol/L) and 1.11 mmol/L (1.06, 1.26 mmol/L), respectively. CONCLUSIONS Differences in HDL and triacylglycerols observed in different ethnic groups may be due in part to carbohydrate intake. Reducing the frequency of intake of sugar-containing soft drinks, juices, and snacks may be beneficial.
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Tavintharan S, Lim SC, Chan YH, Sum CF. Apolipoprotein E genotype affects the response to lipid-lowering therapy in Chinese patients with type 2 diabetes mellitus. Diabetes Obes Metab 2007; 9:81-6. [PMID: 17199722 DOI: 10.1111/j.1463-1326.2006.00577.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate the effect of apolipoprotein E (apoE) genotype on baseline lipid levels and the response to hydroxy-methyl glutaryl coenzyme A reductase inhibitors (statins) therapy in Chinese patients with type 2 diabetes mellitus (DM). RESEARCH DESIGN AND METHODS We consecutively recruited Chinese patients with type 2 DM requiring lipid-lowering therapy according to current guidelines. Patients were started on either simvastatin 10 mg daily or given an equivalent dose of lovastatin 20 mg. After 12 weeks of statin therapy, patients had fasting lipid profiles repeated. ApoE genotyping was performed by restriction fragment length polymorphism (RFLP). RESULTS Ninety-six patients were studied. The epsilon3/epsilon3 genotype was in 62.5%, epsilon2/epsilon3 and epsilon3/epsilon4, 16.7 and 20.8%, respectively. After adjusting for confounding variables, baseline total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) levels were significantly higher in those with epsilon3/epsilon4 compared with epsilon2/epsilon3 genotype (6.7 vs. 5.5 mm for TC, 4.5 vs. 3.6 mm for LDL-C; p = 0.015 and p = 0.025, respectively). With statin therapy, epsilon3/epsilon4 patients had significantly greater LDL-C lowering compared with epsilon2/epsilon3 patients (48 vs. 27.7%; p = 0.04). There was no gender difference in baseline lipid parameters or response to statin therapy. CONCLUSIONS ApoE genotype accounts for interindividual variability of baseline cholesterol levels, and response to statin therapy in Chinese patients with type 2 DM.
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Affiliation(s)
- S Tavintharan
- Department of Medicine, Alexandra Hospital, Singapore.
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Yen YC, Shu BC, Wang CS, Yang MJ, Kao WT, Shih CH, Lung FW. A positive relationship between Apo ε2 allele and high-density lipoprotein cholesterol. Nutr Res 2006. [DOI: 10.1016/j.nutres.2006.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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