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Johnson RK, Ireton AJ, Carry PM, Vanderlinden LA, Dong F, Romero A, Johnson DR, Ghosh D, Yang F, Frohnert B, Yang IV, Kechris K, Rewers M, Norris JM. DNA Methylation Near DLGAP2 May Mediate the Relationship between Family History of Type 1 Diabetes and Type 1 Diabetes Risk. Pediatr Diabetes 2023; 2023:5367637. [PMID: 38765731 PMCID: PMC11100224 DOI: 10.1155/2023/5367637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
Given the differential risk of type 1 diabetes (T1D) in offspring of affected fathers versus affected mothers and our observation that T1D cases have differential DNA methylation near the imprinted DLGAP2 gene compared to controls, we examined whether methylation near DLGAP2 mediates the association between T1D family history and T1D risk. In a nested case-control study of 87 T1D cases and 87 controls from the Diabetes Autoimmunity Study in the Young, we conducted causal mediation analyses at 12 DLGAP2 region CpGs to decompose the effect of family history on T1D risk into indirect and direct effects. These effects were estimated from two regression models adjusted for the human leukocyte antigen DR3/4 genotype: a linear regression of family history on methylation (mediator model) and a logistic regression of family history and methylation on T1D (outcome model). For 8 of the 12 CpGs, we identified a significant interaction between T1D family history and methylation on T1D risk. Accounting for this interaction, we found that the increased risk of T1D for children with affected mothers compared to those with no family history was mediated through differences in methylation at two CpGs (cg27351978, cg00565786) in the DLGAP2 region, as demonstrated by a significant pure natural indirect effect (odds ratio (OR) = 1.98, 95% confidence interval (CI): 1.06-3.71) and nonsignificant total natural direct effect (OR = 1.65, 95% CI: 0.16-16.62) (for cg00565786). In contrast, the increased risk of T1D for children with an affected father or sibling was not explained by DNA methylation changes at these CpGs. Results were similar for cg27351978 and robust in sensitivity analyses. Lastly, we found that DNA methylation in the DLGAP2 region was associated (P<0:05) with gene expression of nearby protein-coding genes DLGAP2, ARHGEF10, ZNF596, and ERICH1. Results indicate that the maternal protective effect conferred through exposure to T1D in utero may operate through changes to DNA methylation that have functional downstream consequences.
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Affiliation(s)
- Randi K. Johnson
- Department of Biomedical Informatics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Amanda J. Ireton
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Patrick M. Carry
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Lauren A. Vanderlinden
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Fran Dong
- Barbara Davis Center for Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Alex Romero
- Department of Biomedical Informatics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - David R. Johnson
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Debashis Ghosh
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Fan Yang
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Brigitte Frohnert
- Barbara Davis Center for Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Ivana V. Yang
- Department of Biomedical Informatics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Katerina Kechris
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Marian Rewers
- Barbara Davis Center for Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jill M. Norris
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Head ST, Leslie EJ, Cutler DJ, Epstein MP. POIROT: a powerful test for parent-of-origin effects in unrelated samples leveraging multiple phenotypes. Bioinformatics 2023; 39:btad199. [PMID: 37067493 PMCID: PMC10148680 DOI: 10.1093/bioinformatics/btad199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/18/2023] Open
Abstract
MOTIVATION There is widespread interest in identifying genetic variants that exhibit parent-of-origin effects (POEs) wherein the effect of an allele on phenotype expression depends on its parental origin. POEs can arise from different phenomena including genomic imprinting and have been documented for many complex traits. Traditional tests for POEs require family data to determine parental origins of transmitted alleles. As most genome-wide association studies (GWAS) sample unrelated individuals (where allelic parental origin is unknown), the study of POEs in such datasets requires sophisticated statistical methods that exploit genetic patterns we anticipate observing when POEs exist. We propose a method to improve discovery of POE variants in large-scale GWAS samples that leverages potential pleiotropy among multiple correlated traits often collected in such studies. Our method compares the phenotypic covariance matrix of heterozygotes to homozygotes based on a Robust Omnibus Test. We refer to our method as the Parent of Origin Inference using Robust Omnibus Test (POIROT) of multiple quantitative traits. RESULTS Through simulation studies, we compared POIROT to a competing univariate variance-based method which considers separate analysis of each phenotype. We observed POIROT to be well-calibrated with improved power to detect POEs compared to univariate methods. POIROT is robust to non-normality of phenotypes and can adjust for population stratification and other confounders. Finally, we applied POIROT to GWAS data from the UK Biobank using BMI and two cholesterol phenotypes. We identified 338 genome-wide significant loci for follow-up investigation. AVAILABILITY AND IMPLEMENTATION The code for this method is available at https://github.com/staylorhead/POIROT-POE.
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Affiliation(s)
- S Taylor Head
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA 30322, United States
| | - Elizabeth J Leslie
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, United States
| | - David J Cutler
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, United States
| | - Michael P Epstein
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, United States
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Patel J, Bircan E, Tang X, Orloff M, Hobbs CA, Browne ML, Botto LD, Finnell RH, Jenkins MM, Olshan A, Romitti PA, Shaw GM, Werler MM, Li J, Nembhard WN. Paternal genetic variants and risk of obstructive heart defects: A parent-of-origin approach. PLoS Genet 2021; 17:e1009413. [PMID: 33684136 PMCID: PMC7971842 DOI: 10.1371/journal.pgen.1009413] [Citation(s) in RCA: 2] [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: 09/23/2020] [Revised: 03/18/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022] Open
Abstract
Previous research on risk factors for obstructive heart defects (OHDs) focused on maternal and infant genetic variants, prenatal environmental exposures, and their potential interaction effects. Less is known about the role of paternal genetic variants or environmental exposures and risk of OHDs. We examined parent-of-origin effects in transmission of alleles in the folate, homocysteine, or transsulfuration pathway genes on OHD occurrence in offspring. We used data on 569 families of liveborn infants with OHDs born between October 1997 and August 2008 from the National Birth Defects Prevention Study to conduct a family-based case-only study. Maternal, paternal, and infant DNA were genotyped using an Illumina Golden Gate custom single nucleotide polymorphism (SNP) panel. Relative risks (RR), 95% confidence interval (CI), and likelihood ratio tests from log-linear models were used to estimate the parent-of-origin effect of 877 SNPs in 60 candidate genes in the folate, homocysteine, and transsulfuration pathways on the risk of OHDs. Bonferroni correction was applied for multiple testing. We identified 3 SNPs in the transsulfuration pathway and 1 SNP in the folate pathway that were statistically significant after Bonferroni correction. Among infants who inherited paternally-derived copies of the G allele for rs6812588 in the RFC1 gene, the G allele for rs1762430 in the MGMT gene, and the A allele for rs9296695 and rs4712023 in the GSTA3 gene, RRs for OHD were 0.11 (95% CI: 0.04, 0.29, P = 9.16x10-7), 0.30 (95% CI: 0.17, 0.53, P = 9.80x10-6), 0.34 (95% CI: 0.20, 0.57, P = 2.28x10-5), and 0.34 (95% CI: 0.20, 0.58, P = 3.77x10-5), respectively, compared to infants who inherited maternally-derived copies of the same alleles. We observed statistically significant decreased risk of OHDs among infants who inherited paternal gene variants involved in folate and transsulfuration pathways. Obstructive heart defects are birth defects that cause obstruction to the blood flow of the developing heart. Common OHDs include coarctation of the aorta, aortic stenosis and pulmonary stenosis. While there is a fair amount of literature indicating an association between maternal genetic variants and OHDs, less is known about the role of paternal genetic variants in the etiology of OHDs. We used a genotype clustering algorithm, SNPMClust, that was developed in-house at the Arkansas Center for Birth Defects Research and Prevention to study the role of paternal genetic variants in the folate, homocysteine and transsulfuration pathways. Maternal, paternal, and infant DNA specimens were collected from participants of the National Birth Defects Prevention Study, a large population-based case-control study in the United States, and were genotyped using an Illumina Golden Gate custom single nucleotide polymorphism (SNP) panel. We identified 4 SNPs in the folate and transsulfuration pathways, rs6812588, rs1762430, rs9296695, and rs4712023, that were associated with a statistically significant decreased risk of OHDs for infants who inherited a paternally-derived copy of the variant allele compared to infants who inherited a maternal copy of the variant allele. In conclusion, we observed a significantly decreased risk and less epigenetic influence of paternal genetic variants on OHDs compared to maternally-derived variants.
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Affiliation(s)
- Jenil Patel
- Department of Epidemiology, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Arkansas Center for Birth Defects Research and Prevention, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Department of Epidemiology, Human Genetics and Environmental Sciences, The University of Texas Health Science Center at Houston (UTHealth) School of Public Health, Dallas, TX, United States of America
| | - Emine Bircan
- Department of Epidemiology, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Arkansas Center for Birth Defects Research and Prevention, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
| | - Xinyu Tang
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Arkansas Children’s Research Institute, Little Rock, AR, United States of America
| | - Mohammed Orloff
- Department of Epidemiology, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Arkansas Center for Birth Defects Research and Prevention, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
| | - Charlotte A. Hobbs
- Rady Children’s Institute for Genomic Medicine, San Diego, CA, United States of America
| | - Marilyn L. Browne
- Birth Defects Research Section, New York State Department of Health, Albany, NY, United States of America
- Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, Rensselaer, NY, United States of America
| | - Lorenzo D. Botto
- Division of Medical Genetics, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States of America
| | - Richard H. Finnell
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States of America
| | - Mary M. Jenkins
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Andrew Olshan
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States of America
| | - Paul A. Romitti
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA, United States of America
| | - Gary M. Shaw
- Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, United States of America
| | - Martha M. Werler
- Department of Epidemiology, School of Public Health, Boston University, Boston, MA, United States of America
| | - Jingyun Li
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Arkansas Children’s Research Institute, Little Rock, AR, United States of America
| | - Wendy N. Nembhard
- Department of Epidemiology, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Arkansas Center for Birth Defects Research and Prevention, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- * E-mail:
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Baulina N, Kiselev I, Favorova O. Imprinted Genes and Multiple Sclerosis: What Do We Know? Int J Mol Sci 2021; 22:1346. [PMID: 33572862 PMCID: PMC7866243 DOI: 10.3390/ijms22031346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune neurodegenerative disease of the central nervous system that arises from interplay between non-genetic and genetic risk factors. The epigenetics functions as a link between these factors, affecting gene expression in response to external influence, and therefore should be extensively studied to improve the knowledge of MS molecular mechanisms. Among others, the epigenetic mechanisms underlie the establishment of parent-of-origin effects that appear as phenotypic differences depending on whether the allele was inherited from the mother or father. The most well described manifestation of parent-of-origin effects is genomic imprinting that causes monoallelic gene expression. It becomes more obvious that disturbances in imprinted genes at the least affecting their expression do occur in MS and may be involved in its pathogenesis. In this review we will focus on the potential role of imprinted genes in MS pathogenesis.
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Affiliation(s)
- Natalia Baulina
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Ivan Kiselev
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
| | - Olga Favorova
- Institute of Translational Medicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia; (I.K.); (O.F.)
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, 117997 Moscow, Russia
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Chabosseau P, Rutter GA, Millership SJ. Importance of Both Imprinted Genes and Functional Heterogeneity in Pancreatic Beta Cells: Is There a Link? Int J Mol Sci 2021; 22:1000. [PMID: 33498234 PMCID: PMC7863946 DOI: 10.3390/ijms22031000] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 02/02/2023] Open
Abstract
Diabetes mellitus now affects more than 400 million individuals worldwide, with significant impacts on the lives of those affected and associated socio-economic costs. Although defects in insulin secretion underlie all forms of the disease, the molecular mechanisms which drive them are still poorly understood. Subsets of specialised beta cells have, in recent years, been suggested to play critical roles in "pacing" overall islet activity. The molecular nature of these cells, the means through which their identity is established and the changes which may contribute to their functional demise and "loss of influence" in both type 1 and type 2 diabetes are largely unknown. Genomic imprinting involves the selective silencing of one of the two parental alleles through DNA methylation and modified imprinted gene expression is involved in a number of diseases. Loss of expression, or loss of imprinting, can be shown in mouse models to lead to defects in beta cell function and abnormal insulin secretion. In the present review we survey the evidence that altered expression of imprinted genes contribute to loss of beta cell function, the importance of beta cell heterogeneity in normal and disease states, and hypothesise whether there is a direct link between the two.
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Affiliation(s)
| | | | - Steven J. Millership
- Section of Cell Biology and Functional Genomics, Division of Diabetes, Endocrinology and Metabolism, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK; (P.C.); (G.A.R.)
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Granot-Hershkovitz E, Wu P, Karasik D, Peter I, Peloso GM, Levy D, Vasan RS, Adrienne Cupples L, Liu CT, Meigs JB, Siscovick DS, Dupuis J, Friedlander Y, Hochner H. Searching for parent-of-origin effects on cardiometabolic traits in imprinted genomic regions. Eur J Hum Genet 2020; 28:646-655. [PMID: 31896779 PMCID: PMC7170899 DOI: 10.1038/s41431-019-0568-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 12/12/2019] [Accepted: 12/17/2019] [Indexed: 11/08/2022] Open
Abstract
Cardiometabolic traits pose a major global public health burden. Large-scale genome-wide association studies (GWAS) have identified multiple loci accounting for up to 30% of the genetic variance in complex traits such as cardiometabolic traits. However, the contribution of parent-of-origin effects (POEs) to complex traits has been largely ignored in GWAS. Family-based studies enable the assessment of POEs in genetic association analyses. We investigated POEs on a range of complex traits in 3 family-based studies. The discovery phase was carried out in large pedigrees from the Kibbutzim Family Study (n = 901 individuals) and in 872 parent-offspring trios from the Jerusalem Perinatal Study. Focusing on imprinted genomic regions, we examined parent-specific associations with 12 complex traits (i.e., body-size, blood pressure, lipids), mostly cardiometabolic risk traits. Forty five of the 11,967 SNPs initially found to have POE were evaluated for replication (p value < 1 × 10-4) in Framingham Heart Study families (max n = 8000 individuals). Three common variants yielded evidence of POE in the meta-analysis. Two variants, located on chr6 in the HLA region, showed a paternal effect on height (rs1042136: βpaternal = -0.023, p value = 1.5 × 10-8 and rs1431403: βpaternal = -0.011, p value = 5.4 × 10-6). The corresponding maternally-derived effects were statistically nonsignificant. The variant rs9332053, located on chr13 in RCBTB2 gene, demonstrated a maternal effect on hip circumference (βmaternal = -4.24, p value = 9.6 × 10-6; βpaternal = 1.29, p value = 0.23). These findings provide evidence for the utility of incorporating POEs into association studies of cardiometabolic traits, especially anthropometric traits. The study highlights the benefits of using family-based data for deciphering the genetic architecture of complex traits.
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Affiliation(s)
| | - Peitao Wu
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
| | - David Karasik
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Inga Peter
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Gina M Peloso
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
| | - Daniel Levy
- Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, MA, 01702, USA
- The Population Sciences Branch, Division of Intramural Research, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD, USA
| | - Ramachandran S Vasan
- Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, MA, 01702, USA
- Sections of Preventive medicine and Epidemiology, and cardiovascular medicine, Departments of Medicine and Epidemiology, Boston University Schools of Medicine and Public health, Boston, MA, 02118, USA
| | - L Adrienne Cupples
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
- Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, MA, 01702, USA
| | - Ching-Ti Liu
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
| | - James B Meigs
- Programs in Metabolism and Medical & Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - David S Siscovick
- Institute for Urban Health, New York Academy of Medicine, New York, NY, USA
| | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, 02118, USA
- Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, MA, 01702, USA
| | - Yechiel Friedlander
- Braun School of Public Health, The Hebrew University of Jerusalem, 99112102, Jerusalem, Israel
| | - Hagit Hochner
- Braun School of Public Health, The Hebrew University of Jerusalem, 99112102, Jerusalem, Israel.
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Emborski C, Mikheyev AS. Ancestral diet transgenerationally influences offspring in a parent-of-origin and sex-specific manner. Philos Trans R Soc Lond B Biol Sci 2020; 374:20180181. [PMID: 30966955 PMCID: PMC6365861 DOI: 10.1098/rstb.2018.0181] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Parent-of-origin effects, whereby specific phenotypes are differentially inherited paternally or maternally, provide useful clues to better understand transgenerational effect transmission. Ancestral diet influences offspring phenotypes, including body composition and fitness. However, the specific role that mothers and fathers play in the transmission of altered phenotypes to male and female offspring remains unclear. We investigated the influence of the parent-of-origin's diet on adult progeny phenotypes and reproductive output for three generations in fruit flies (Drosophila melanogaster). Males and females reared on a control diet were exposed to the control diet or one of two altered (no- or high-) sugar treatment diets for a single generation. Flies from one of the two altered diet treatments were then mated to control flies in a full-factorial design to produce F1 offspring and kept on control media for each following generation. We found parent-of-origin (triglyceride) and non-parent-of-origin (sugar) body composition effects, which were transgenerational and sex-specific. Additionally, we observed a negative correlation between intergenerational maternal reproductive output and triglyceride levels, suggesting that ancestral diet may affect fitness. This work demonstrates that ancestral diet can transmit altered phenotypes in a parent-of-origin and sex-specific manner and highlights that mechanisms regulating such transmission have been greatly overlooked. This article is part of the theme issue ‘The role of plasticity in phenotypic adaptation to rapid environmental change’.
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Affiliation(s)
- Carmen Emborski
- 1 The Institute of Environmental and Human Health, Texas Tech University , Lubbock, TX 79416 , USA.,2 Okinawa Institute of Science and Technology , 1919-1 Tancha, Onna, Kunigami District, Okinawa Prefecture 904-0495 , Japan
| | - Alexander S Mikheyev
- 2 Okinawa Institute of Science and Technology , 1919-1 Tancha, Onna, Kunigami District, Okinawa Prefecture 904-0495 , Japan.,3 Research School of Biology, Australia National University , 134 Linnaeus Way, Acton, Australian Capital Territory 2601 , Australia
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Almari M, Alsaedi S, Mohammad A, Ziyab AH. Associations of adiposity and parental diabetes with prediabetes among adolescents in Kuwait: A cross-sectional study. Pediatr Diabetes 2018; 19:1362-1369. [PMID: 30255624 DOI: 10.1111/pedi.12780] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 09/03/2018] [Accepted: 09/17/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Prediabetes, a high-risk state for developing diabetes, has become more prevalent among children and adolescents in recent decades. This study sought to estimate the prevalence of prediabetes and assess its association with adiposity among adolescents in Kuwait. Also, to determine whether maternal and paternal history of diabetes associate with offspring prediabetes in a sex-specific manner. METHODS A cross-sectional study was conducted by enrolling students (n = 1959; aged 14-19 years) attending high schools across Kuwait. Body mass index-for-age z-scores were estimated using the World Health Organization growth reference. Glycated hemoglobin A1c (HbA1c) was measured in capillary blood using point-of-care testing. Prediabetes was defined according to the diagnostic criteria of the American Diabetes Association (ADA; 5.7 ≤ HbA1c% ≤ 6.4) and the International Expert Committee (IEC; 6.0 ≤ HbA1c% ≤ 6.4). Adjusted prevalence ratios (aPR) and 95% confidence intervals (CI) were estimated using Poisson regression with robust variance estimation. RESULTS According to the ADA criteria, 33.3% (620/1845) of participants had prediabetes; whereas, 8.5% (157/1845) met the IEC definition for prediabetes. Subjects classified as obese had higher prevalence of prediabetes compared to children in the thinness/normal group (aPR = 1.68, 95% CI: 1.44-1.95). Analysis stratified by offspring sex showed that maternal history of diabetes is associated with prediabetes among male offspring (aPR = 1.29, 95% CI: 1.02-1.63). In contrast, paternal history of diabetes showed an association with prediabetes among female offspring (aPR = 1.22, 95% CI: 1.01-1.48). CONCLUSIONS Prediabetes affects a substantial proportion of adolescents in Kuwait and adiposity and parental diabetes being the main associated factors with prediabetes.
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Affiliation(s)
- Mohammad Almari
- Department of Community Medicine and Behavioral Sciences, Faculty of Medicine, Kuwait University, Safat, Kuwait.,Medical Services Directorate, Kuwait National Guard, Safat, Kuwait
| | - Saad Alsaedi
- Medical Services Directorate, Kuwait National Guard, Safat, Kuwait
| | - Anwar Mohammad
- Epidemiology and Public Health Unit, Dasman Diabetes Institute, Safat, Kuwait
| | - Ali H Ziyab
- Department of Community Medicine and Behavioral Sciences, Faculty of Medicine, Kuwait University, Safat, Kuwait.,Epidemiology and Public Health Unit, Dasman Diabetes Institute, Safat, Kuwait
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Acevedo-Negrete AP, Porchia LM, Gonzalez-Mejia ME, Torres-Rasgado E, Solis-Cano DG, Ruiz-Vivanco G, Pérez-Fuentes R. The impact of parental history of type 2 diabetes on hyperinsulinemia and insulin resistance in subjects from central Mexico. Diabetes Metab Syndr 2017; 11 Suppl 2:S895-S900. [PMID: 28697997 DOI: 10.1016/j.dsx.2017.07.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 07/01/2017] [Indexed: 01/16/2023]
Abstract
AIMS Hyperinsulinemia and insulin resistance are both associated with the development of Type 2 Diabetes and other pathologies; however, the influence of parental history of Type 2 diabetes (PH-T2D) has yet to be investigated. Therefore, this study was conducted to determine the effect of PH-T2D has on the risk of developing hyperinsulinemia and IR. MATERIALS AND METHODS 1092 subjects (703 non-pregnant females and 389 males) were enrolled for a cross-sectional study. Clinical and biochemical parameters were collected. Subjects were allocated according to their PH-T2D: no parents, one parent, or both parents. Insulin resistance was calculated using the HOMA1 equation (HOMA1-IR). Logistic regression was used to determine the association (odds ratio) between PH-T2D and hyperinsulinemia or insulin resistance. RESULTS Increasing degrees of PH-T2D were associated with significant increases in fasting plasma glucose, insulin, and HOMA1-IR (p <0.05). Subjects having one or both parents were associated with an increase risk of developing hyperinsulinemia (odds ratio=1.53, 95%CI: 1.12-2.09, and odds ratio=1.92, 95%CI: 1.21-3.06, respectively) and insulin resistance (odds ratio=1.47, 95%CI: 1.08-2.00 and odds ratio=1.77, 95%CI: 1.09-2.87, respectively), when adjusting for age, sex, BMI, fasting plasma glucose, and triglycerides. CONCLUSION The presences of PH-T2D significantly increased the risk of developing hyperinsulinemia and insulin resistance.
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Affiliation(s)
- Ana Paula Acevedo-Negrete
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Carretera Federal Atlixco-Metepec Km 4.5, C.P. 42730 Atlixco, Pue, Mexico
| | - Leonardo M Porchia
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Carretera Federal Atlixco-Metepec Km 4.5, C.P. 42730 Atlixco, Pue, Mexico
| | - M Elba Gonzalez-Mejia
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2901 Colonia Volcanes, C.P. 72000, Puebla, Pue, Mexico
| | - Enrique Torres-Rasgado
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2901 Colonia Volcanes, C.P. 72000, Puebla, Pue, Mexico
| | - Dania G Solis-Cano
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Carretera Federal Atlixco-Metepec Km 4.5, C.P. 42730 Atlixco, Pue, Mexico
| | - Guadalupe Ruiz-Vivanco
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Carretera Federal Atlixco-Metepec Km 4.5, C.P. 42730 Atlixco, Pue, Mexico; Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2901 Colonia Volcanes, C.P. 72000, Puebla, Pue, Mexico
| | - Ricardo Pérez-Fuentes
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Carretera Federal Atlixco-Metepec Km 4.5, C.P. 42730 Atlixco, Pue, Mexico; Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, Calle 13 Sur 2901 Colonia Volcanes, C.P. 72000, Puebla, Pue, Mexico.
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Wu M, Wen J, Qin Y, Zhao H, Pan X, Su J, Du W, Pan E, Zhang Q, Zhang N, Sheng H, Liu C, Shen C. Familial History of Diabetes is Associated with Poor Glycaemic Control in Type 2 Diabetics: A Cross-sectional Study. Sci Rep 2017; 7:1432. [PMID: 28469277 PMCID: PMC5431173 DOI: 10.1038/s41598-017-01527-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 03/31/2017] [Indexed: 12/27/2022] Open
Abstract
To investigate the association of familial history (FH) of diabetes with the glycaemic control status of patients with type 2 diabetes (T2D), a cross-sectional study using stratified cluster sampling was conducted with 20,340 diabetic patients in Jiangsu, China. In total, 21.3% of the subjects reported a FH of diabetes. Patients with a FH of diabetes showed a higher risk of poor glycaemic control (59.7%) than those without a diabetic FH (49.8%), with an odds ratio (OR) of 1.366 (P < 0.001). Glycaemic control status did not significantly differ between the T2D patients with parental FH and those with sibling FH. Compared with patients with paternal FH, patients with maternal FH had a higher risk of poor glycaemic control (OR = 1.611, P = 0.013). Stratified analyses showed that a FH of diabetes was significantly associated with poor glycaemic control among T2D patients with a low education level (P < 0.05). In the <60 years old, overweight, and low level of physical activity groups, patients with a maternal history of diabetes showed a higher risk of poor glycaemic control than those without a FH (P < 0.05). In conclusion, FH of diabetes, especially a maternal history, had an independently adverse effect on the glycaemic control of T2D patients.
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Affiliation(s)
- Ming Wu
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Jinbo Wen
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Yu Qin
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Hailong Zhao
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Xiaoqun Pan
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Jian Su
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Wencong Du
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, China
| | - Enchun Pan
- Department of Chronic Disease Prevention and Control, Huai'an City Center for Disease Control and Prevention, Huai'an, 223001, China
| | - Qin Zhang
- Department of Chronic Disease Prevention and Control, Huai'an City Center for Disease Control and Prevention, Huai'an, 223001, China
| | - Ning Zhang
- Changshu County Center for Disease Control and Prevention, Suzhou, 215500, China
| | - Hongyan Sheng
- Changshu County Center for Disease Control and Prevention, Suzhou, 215500, China
| | - Chunlan Liu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Chong Shen
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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11
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Wang C, Yatsuya H, Tamakoshi K, Toyoshima H, Wada K, Li Y, Hilawe EH, Uemura M, Chiang C, Zhang Y, Otsuka R, Ota A, Hirakawa Y, Aoyama A. Association between parental history of diabetes and the incidence of type 2 diabetes mellitus differs according to the sex of the parent and offspring's body weight: A finding from a Japanese worksite-based cohort study. Prev Med 2015; 81:49-53. [PMID: 26257371 DOI: 10.1016/j.ypmed.2015.07.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/06/2015] [Accepted: 07/28/2015] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To investigate differences in the association of parental history of diabetes with the risk of type 2 diabetes mellitus (T2DM) in the offspring according to the sex of the parent and the offspring's body weight. METHODS A prospective cohort study of 4446 middle-aged non-diabetic Japanese men and women were followed in Aichi Prefecture, central Japan, from 2002 to 2011. Subjects were categorized by their self-reported parental history of diabetes ("no parental history," "father only," "mother only," and "both"). The association of parental history of diabetes and incidence in the offspring was examined according to overweight status adjusted for age, sex, birth weight, smoking, alcohol consumption, physical activity, total energy intake, body mass index, and number of metabolic syndrome components. RESULTS During follow-up (median 8.9 years), 277 subjects developed T2DM. Parental history of diabetes was positively associated with T2DM incidence. However, stratified analysis by overweight status revealed that only maternal history was associated with increased T2DM incidence in non-overweight subjects (hazard ratio=2.35, 95% confidence interval: 1.41-3.91). While in overweight subjects, paternal history was significantly associated with higher T2DM incidence (hazard ratio=1.98, 95% confidence interval: 1.19-3.28). CONCLUSIONS Our results suggest that parental history of diabetes mellitus is associated with the incidence of T2DM in offspring differently according to the sex of the affected parent and the offspring's body weight.
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Affiliation(s)
- Chaochen Wang
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Public Health, Aichi Medical University School of Medicine, Nagakute, Aichi, Japan
| | - Hiroshi Yatsuya
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Public Health, Fujita Health University School of Medicine, Toyoake, Aichi, Japan.
| | - Koji Tamakoshi
- Department of Nursing, Nagoya University School of Health Science, Nagoya, Japan
| | - Hideaki Toyoshima
- Education and Clinical Research Training Center, Anjo Kosei Hospital, Anjo, Aichi, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuanying Li
- Department of Public Health, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Esayas Haregot Hilawe
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mayu Uemura
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Epidemiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Chifa Chiang
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yan Zhang
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Rei Otsuka
- Section of Longitudinal Study of Aging, National Institute for Longevity Sciences (NILS-LSA), National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Atsuhiko Ota
- Department of Public Health, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Yoshihisa Hirakawa
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsuko Aoyama
- Department of Public Health and Health Systems, Nagoya University Graduate School of Medicine, Nagoya, Japan
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12
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Zayats T, Johansson S, Haavik J. Expanding the toolbox of ADHD genetics. How can we make sense of parent of origin effects in ADHD and related behavioral phenotypes? Behav Brain Funct 2015; 11:33. [PMID: 26475699 PMCID: PMC4609130 DOI: 10.1186/s12993-015-0078-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/07/2015] [Indexed: 01/09/2023] Open
Abstract
Genome-wide association (GWA) studies have shown that many different genetic variants cumulatively contribute to the risk of psychiatric disorders. It has also been demonstrated that various parent-of-origin effects (POE) may differentially influence the risk of these disorders. Together, these observations have provided important new possibilities to uncover the genetic underpinnings of such complex phenotypes. As POE so far have received little attention in neuropsychiatric disorders, there is still much progress to be made. Here, we mainly focus on the new and emerging role of POE in attention-deficit hyperactivity disorder (ADHD). We review the current evidence that POE play an imperative role in vulnerability to ADHD and related disorders. We also discuss how POE can be assessed using statistical genetics tools, expanding the resources of modern psychiatric genetics. We propose that better comprehension and inspection of POE may offer new insight into the molecular basis of ADHD and related phenotypes, as well as the potential for preventive and therapeutic interventions.
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Affiliation(s)
- Tetyana Zayats
- Department of Biomedicine, K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Bergen, Norway.
| | - Stefan Johansson
- Department of Clinical Science, K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Bergen, Norway. .,Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen, Norway.
| | - Jan Haavik
- Department of Biomedicine, K.G. Jebsen Centre for Neuropsychiatric Disorders, University of Bergen, Bergen, Norway. .,Division of Psychiatry, Haukeland University Hospital, Bergen, Norway.
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13
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Hochner H, Allard C, Granot-Hershkovitz E, Chen J, Sitlani CM, Sazdovska S, Lumley T, McKnight B, Rice K, Enquobahrie DA, Meigs JB, Kwok P, Hivert MF, Borecki IB, Gomez F, Wang T, van Duijn C, Amin N, Rotter JI, Stamatoyannopoulos J, Meiner V, Manor O, Dupuis J, Friedlander Y, Siscovick DS. Parent-of-Origin Effects of the APOB Gene on Adiposity in Young Adults. PLoS Genet 2015; 11:e1005573. [PMID: 26451733 PMCID: PMC4599806 DOI: 10.1371/journal.pgen.1005573] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 09/15/2015] [Indexed: 01/23/2023] Open
Abstract
Loci identified in genome-wide association studies (GWAS) of cardio-metabolic traits account for a small proportion of the traits' heritability. To date, most association studies have not considered parent-of-origin effects (POEs). Here we report investigation of POEs on adiposity and glycemic traits in young adults. The Jerusalem Perinatal Family Follow-Up Study (JPS), comprising 1250 young adults and their mothers was used for discovery. Focusing on 18 genes identified by previous GWAS as associated with cardio-metabolic traits, we used linear regression to examine the associations of maternally- and paternally-derived offspring minor alleles with body mass index (BMI), waist circumference (WC), fasting glucose and insulin. We replicated and meta-analyzed JPS findings in individuals of European ancestry aged ≤50 belonging to pedigrees from the Framingham Heart Study, Family Heart Study and Erasmus Rucphen Family study (total N≅4800). We considered p<2.7x10-4 statistically significant to account for multiple testing. We identified a common coding variant in the 4th exon of APOB (rs1367117) with a significant maternally-derived effect on BMI (β = 0.8; 95%CI:0.4,1.1; p = 3.1x10-5) and WC (β = 2.7; 95%CI:1.7,3.7; p = 2.1x10-7). The corresponding paternally-derived effects were non-significant (p>0.6). Suggestive maternally-derived associations of rs1367117 were observed with fasting glucose (β = 0.9; 95%CI:0.3,1.5; p = 4.0x10-3) and insulin (ln-transformed, β = 0.06; 95%CI:0.03,0.1; p = 7.4x10-4). Bioinformatic annotation for rs1367117 revealed a variety of regulatory functions in this region in liver and adipose tissues and a 50% methylation pattern in liver only, consistent with allelic-specific methylation, which may indicate tissue-specific POE. Our findings demonstrate a maternal-specific association between a common APOB variant and adiposity, an association that was not previously detected in GWAS. These results provide evidence for the role of regulatory mechanisms, POEs specifically, in adiposity. In addition this study highlights the benefit of utilizing family studies for deciphering the genetic architecture of complex traits. To date, genetic variants identified in large-scale genetic studies using recent technical and methodological advances explain only a small proportion of the genetic basis of obesity, diabetes and other cardiovascular risk factors. These studies were typically conducted in samples of unrelated individuals. Here we utilize a family-based approach to identify genetic variants associated with obesity-related traits. Specifically, we examined the separate contribution of maternally- vs. paternally-inherited common genetic variants to these traits. By examining 1250 young adults and their mothers from Jerusalem, we show that a specific genetic variant, rs1367117, located in the APOB gene on chromosome 2 is related to body mass index and waist circumference when inherited from mother and not from father. This maternal effect is not restricted to Jerusalemites, but is also seen in a large sample of individuals of European descent from independent family studies worldwide. Our findings provide support of the role of complex genetic mechanisms in obesity, and highlight the benefit of utilizing family studies for uncovering genetic pathways underlying common risk factors and diseases.
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Affiliation(s)
- Hagit Hochner
- Braun School of Public Health, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
- * E-mail:
| | - Catherine Allard
- Département de Mathématiques, Université de Sherbrooke and Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Quebec, Canada
| | | | - Jinbo Chen
- Department of Biostatistics and Epidemiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Colleen M. Sitlani
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Cardiovascular Health Research Unit, University of Washington, Seattle, Washington, United States of America
| | - Sandra Sazdovska
- Braun School of Public Health, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Thomas Lumley
- Department of Statistics, University of Auckland, Auckland, New Zealand
| | - Barbara McKnight
- Department of Biostatistics, University of Washington, Seattle, Washington, United States of America
| | - Kenneth Rice
- Department of Biostatistics, University of Washington, Seattle, Washington, United States of America
| | - Daniel A. Enquobahrie
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - James B. Meigs
- Harvard Medical School and General Medicine Division, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Pui Kwok
- Institute of Human Genetics, University of California, San Francisco, California, United States of America
- Cardiovascular Research Institute, University of California, San Francisco, California, United States of America
- Department of Dermatology, University of California, San Francisco, California, United States of America
| | - Marie-France Hivert
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, Massachusetts, United States of America
| | - Ingrid B. Borecki
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Felicia Gomez
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Ting Wang
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Cornelia van Duijn
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus Medical Center, University Medical Center, Rotterdam, the Netherlands
| | - Najaf Amin
- Genetic Epidemiology Unit, Department of Epidemiology, Erasmus Medical Center, University Medical Center, Rotterdam, the Netherlands
| | - Jerome I. Rotter
- Institute for Translational Genomics and Population Sciences and Department of Pediatrics, Los Angeles BioMedical Research Institute at Harbor-UCLA Medical Center, Torrance, California, United States of America
| | - John Stamatoyannopoulos
- Department of Medicine, University of Washington, Seattle, Washington, United States of America
- Department of Genome Sciences, University of Washington, Seattle, Washington, United States of America
| | - Vardiella Meiner
- Department of Genetics and Metabolism, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Orly Manor
- Braun School of Public Health, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, United States of America
| | - Yechiel Friedlander
- Braun School of Public Health, Hebrew University-Hadassah Medical Center, Jerusalem, Israel
| | - David S. Siscovick
- New York Academy of Medicine, New York, New York, United States of America
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14
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Weijmans M, van der Graaf Y, Reitsma JB, Visseren FLJ. Paternal or maternal history of cardiovascular disease and the risk of cardiovascular disease in offspring. A systematic review and meta-analysis. Int J Cardiol 2014; 179:409-16. [PMID: 25464496 DOI: 10.1016/j.ijcard.2014.11.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/27/2014] [Accepted: 11/03/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Parental history of cardiovascular disease (CVD) is an established risk factor for the development of CVD in offspring. Several studies have suggested that a maternal transmission of CVD is more important for the development of CVD than paternal transmission. METHODS A systematic search and meta-analysis were conducted, using the Medline and Embase databases. Included were cohort, case-control and cross-sectional studies (n=26) focusing on the relation between paternal and maternal histories of cardiovascular disease and offspring CVD (myocardial infarction, stroke or cardiovascular mortality). The pooled estimates were calculated using a random-effects model. RESULTS The pooled OR of CVD in offspring having a positive paternal history of CVD compared to not having a positive parental history was 1.91 (95% CI 1.56-2.34; I(2)53%), the RR1.54 (95% CI 1.33-1.77; I(2)96%). The OR of a maternal history was 2.16 (95% CI 1.71-2.74; I(2)50%), RR1.59 (95% CI 1.38-1.84; I(2)90%). Regarding different age limits, a maternal history <50 years (3.15, 95% CI 2.18-4.55) and paternal history <55 years (2.82, 95% CI 2.25-3.54) were associated with the highest cardiovascular risk. Additional analyses for sons demonstrated an estimate for a positive paternal history of 1.55 (95% CI 1.39-1.71; I(2)74%) and 1.56 (95% CI 1.46-1.67; I(2)16%) for maternal history. For daughters, the estimate for paternal history was 1.48 (95% CI 1.26-1.74; I(2)73%) and 1.79 (95% CI 1.50-2.13; I(2)68%) for maternal history . CONCLUSIONS The conferred risk of CVD in offspring was not substantially different between positive paternal and maternal histories of CVD, the highest risk was observed for maternal history <50years. Since a positive parental history of CVD involves an increased cardiovascular risk, parental history inquiry is useful in clinical practice. No distinction has to be made whether the affected parent is the mother or the father.
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Affiliation(s)
- M Weijmans
- Departments of Vascular Medicine, University Medical Center Utrecht, The Netherlands
| | - Y van der Graaf
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, The Netherlands
| | - J B Reitsma
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, The Netherlands
| | - F L J Visseren
- Departments of Vascular Medicine, University Medical Center Utrecht, The Netherlands.
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Novel approach identifies SNPs in SLC2A10 and KCNK9 with evidence for parent-of-origin effect on body mass index. PLoS Genet 2014; 10:e1004508. [PMID: 25078964 PMCID: PMC4117451 DOI: 10.1371/journal.pgen.1004508] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/14/2014] [Indexed: 01/12/2023] Open
Abstract
The phenotypic effect of some single nucleotide polymorphisms (SNPs) depends on their parental origin. We present a novel approach to detect parent-of-origin effects (POEs) in genome-wide genotype data of unrelated individuals. The method exploits increased phenotypic variance in the heterozygous genotype group relative to the homozygous groups. We applied the method to >56,000 unrelated individuals to search for POEs influencing body mass index (BMI). Six lead SNPs were carried forward for replication in five family-based studies (of ∼4,000 trios). Two SNPs replicated: the paternal rs2471083-C allele (located near the imprinted KCNK9 gene) and the paternal rs3091869-T allele (located near the SLC2A10 gene) increased BMI equally (beta = 0.11 (SD), P<0.0027) compared to the respective maternal alleles. Real-time PCR experiments of lymphoblastoid cell lines from the CEPH families showed that expression of both genes was dependent on parental origin of the SNPs alleles (P<0.01). Our scheme opens new opportunities to exploit GWAS data of unrelated individuals to identify POEs and demonstrates that they play an important role in adult obesity.
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16
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Connolly S, Heron EA. Review of statistical methodologies for the detection of parent-of-origin effects in family trio genome-wide association data with binary disease traits. Brief Bioinform 2014; 16:429-48. [PMID: 24903222 DOI: 10.1093/bib/bbu017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 04/14/2014] [Indexed: 11/13/2022] Open
Abstract
The detection of parent-of-origin effects aims to identify whether the functionality of alleles, and in turn associated phenotypic traits, depends on the parental origin of the alleles. Different parent-of-origin effects have been identified through a variety of mechanisms and a number of statistical methodologies for their detection have been proposed, in particular for genome-wide association studies (GWAS). GWAS have had limited success in explaining the heritability of many complex disorders and traits, but successful identification of parent-of-origin effects using trio (mother, father and offspring) GWAS may help shed light on this missing heritability. However, it is important to choose the most appropriate parent-of-origin test or methodology, given knowledge of the phenotype, amount of available data and the type of parent-of-origin effect(s) being considered. This review brings together the parent-of-origin detection methodologies available, comparing them in terms of power and type I error for a number of different simulated data scenarios, and finally offering guidance as to the most appropriate choice for the different scenarios.
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Barnes DR, Barrowdale D, Beesley J, Chen X, James PA, Hopper JL, Goldgar D, Chenevix-Trench G, Antoniou AC, Mitchell G. Estimating single nucleotide polymorphism associations using pedigree data: applications to breast cancer. Br J Cancer 2013; 108:2610-22. [PMID: 23756864 PMCID: PMC3694253 DOI: 10.1038/bjc.2013.277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 05/06/2013] [Accepted: 05/09/2013] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Pedigrees with multiple genotyped family members have been underutilised in breast cancer (BC) genetic-association studies. We developed a pedigree-based analytical framework to characterise single-nucleotide polymorphism (SNP) associations with BC risk using data from 736 BC families ascertained through multiple affected individuals. On average, eight family members had been genotyped for 24 SNPs previously associated with BC. METHODS Breast cancer incidence was modelled on the basis of SNP effects and residual polygenic effects. Relative risk (RR) estimates were obtained by maximising the retrospective likelihood (RL) of observing the family genotypes conditional on all disease phenotypes. Models were extended to assess parent-of-origin effects (POEs). RESULTS Thirteen SNPs were significantly associated with BC under the pedigree RL approach. This approach yielded estimates consistent with those from large population-based studies. Logistic regression models ignoring pedigree structure generally gave larger RRs and association P-values. SNP rs3817198 in LSP1, previously shown to exhibit POE, yielded maternal and paternal RR estimates that were similar to those previously reported (paternal RR=1.12 (95% confidence interval (CI): 0.99-1.27), P=0.081, one-sided P=0.04; maternal RR=0.94 (95% CI: 0.84-1.06), P=0.33). No other SNP exhibited POE. CONCLUSION Our pedigree-based methods provide a valuable and efficient tool for characterising genetic associations with BC risk or other diseases and can complement population-based studies.
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Affiliation(s)
- D R Barnes
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - D Barrowdale
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - J Beesley
- Department of Genetics, Institute of Medical Research, Brisbane, Queensland, Australia
| | - X Chen
- Department of Genetics, Institute of Medical Research, Brisbane, Queensland, Australia
| | - kConFab Investigators
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
- Department of Genetics, Institute of Medical Research, Brisbane, Queensland, Australia
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Sydney, New South Wales, Australia
- Queensland Institute of Medical Research, Brisbane, Queensland, Australia
- Familial Cancer Centre, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Victoria 3002, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria 3010, Australia
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, Melbourne School of Population Health, University of Melbourne, Melbourne, Victoria, Australia
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Australian Ovarian Cancer Study Group
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
- Department of Genetics, Institute of Medical Research, Brisbane, Queensland, Australia
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Department of Gynaecological Oncology, Westmead Hospital, Westmead Institute for Cancer Research, University of Sydney at Westmead Millennium Institute, Sydney, New South Wales, Australia
- Queensland Institute of Medical Research, Brisbane, Queensland, Australia
- Familial Cancer Centre, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Victoria 3002, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria 3010, Australia
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, Melbourne School of Population Health, University of Melbourne, Melbourne, Victoria, Australia
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - P A James
- Familial Cancer Centre, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Victoria 3002, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - J L Hopper
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, Melbourne School of Population Health, University of Melbourne, Melbourne, Victoria, Australia
| | - D Goldgar
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - G Chenevix-Trench
- Department of Genetics, Institute of Medical Research, Brisbane, Queensland, Australia
| | - A C Antoniou
- Department of Public Health and Primary Care, Centre for Cancer Genetic Epidemiology, University of Cambridge, Cambridge, UK
| | - G Mitchell
- Familial Cancer Centre, Peter MacCallum Cancer Centre, St Andrews Place, East Melbourne, Victoria 3002, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria 3010, Australia
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Sakurai M, Nakamura K, Miura K, Takamura T, Yoshita K, Sasaki S, Nagasawa S, Morikawa Y, Ishizaki M, Kido T, Naruse Y, Suwazono Y, Nakagawa H. Family history of diabetes, lifestyle factors, and the 7-year incident risk of type 2 diabetes mellitus in middle-aged Japanese men and women. J Diabetes Investig 2013; 4:261-8. [PMID: 24843664 PMCID: PMC4015662 DOI: 10.1111/jdi.12033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 10/26/2012] [Accepted: 11/11/2012] [Indexed: 12/20/2022] Open
Abstract
Aims/Introduction This cohort study of middle‐aged Japanese participants investigated the relationship between family history of diabetes, the incident risk of type 2 diabetes and the interaction of these variables with other factors. Materials and Methods Study participants were 3,517 employees (2,037 men and 1,480 women) of a metal products factory in Japan. Baseline health examinations included questions about medical history, physical examination, anthropometric measurements, questions about lifestyle factors, such as smoking, alcohol consumption and habitual exercise, and a self‐administered diet history questionnaire. Family history of diabetes was defined as having at least one‐first‐degree relative with diabetes. The incidence of diabetes was determined in annual medical examinations over a 7‐year period. Hazard ratios (HRs) for type 2 diabetes were estimated by Cox proportional hazards analysis. Results Of the 3,517 participants, 630 (18%) had a family history of diabetes mellitus. During the study, 228 participants developed diabetes. The age and sex‐adjusted HR for type 2 diabetes in participants with a family history of diabetes was 1.82 (95% confidence interval 1.36–2.43) as compared with those without a family history of diabetes. HRs did not change after adjustment for body mass index and lifestyle factors. We found no interactions with body mass index, insulin resistance, pancreatic β‐cell function or lifestyle factors. Conclusions Family history of diabetes was associated with the incident risk of diabetes, and these associations were independent of other risk factors, such as obesity, insulin resistance, and lifestyle factors in Japanese men and women.
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Affiliation(s)
- Masaru Sakurai
- Department of Epidemiology and Public HealthKanazawa Medical UniversityIshikawaJapan
- Department of Preventive MedicineNorthwestern University Feinberg School of MedicineChicagoIllinoisUSA
- Corresponding author. Masaru Sakurai Tel.: +81‐76‐286‐2211 Fax: +81‐76‐286‐3728
E‐mail address:
| | - Koshi Nakamura
- Department of Epidemiology and Public HealthKanazawa Medical UniversityIshikawaJapan
| | - Katsuyuki Miura
- Department of Health ScienceShiga University of Medical ScienceKanazawa UniversityKanazawaJapan
| | - Toshinari Takamura
- Department of Disease Control and HomeostasisKanazawa University Graduate School of Medical ScienceKanazawa UniversityKanazawaJapan
| | - Katsushi Yoshita
- Department of Food Science and NutritionGraduate School of Human Life ScienceOsaka City UniversityOsakaJapan
| | - Satoshi Sasaki
- Department of Social and Preventive EpidemiologySchool of Public Healththe University of TokyoTokyoJapan
| | - Shin‐ya Nagasawa
- Department of Epidemiology and Public HealthKanazawa Medical UniversityIshikawaJapan
| | - Yuko Morikawa
- Department of Epidemiology and Public HealthKanazawa Medical UniversityIshikawaJapan
| | - Masao Ishizaki
- Department of Social and Environmental MedicineKanazawa Medical UniversityIshikawa
| | - Teruhiko Kido
- School of Health SciencesCollege of Medical, Pharmaceutical and Health SciencesKanazawa UniversityKanazawaJapan
| | - Yuchi Naruse
- Department of Community and Geriatric NursingToyama UniversityToyamaJapan
| | - Yasushi Suwazono
- Department of Occupation and Environmental MedicineGraduate School of MedicineChiba UniversityChibaJapan
| | - Hideaki Nakagawa
- Department of Epidemiology and Public HealthKanazawa Medical UniversityIshikawaJapan
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Family-based association tests for sequence data, and comparisons with population-based association tests. Eur J Hum Genet 2013; 21:1158-62. [PMID: 23386037 DOI: 10.1038/ejhg.2012.308] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/22/2012] [Accepted: 11/21/2012] [Indexed: 11/08/2022] Open
Abstract
Recent advances in high-throughput sequencing technologies make it increasingly more efficient to sequence large cohorts for many complex traits. We discuss here a class of sequence-based association tests for family-based designs that corresponds naturally to previously proposed population-based tests, including the classical Burden and variance-component tests. This framework allows for a direct comparison between the powers of sequence-based association tests with family- vs population-based designs. We show that for dichotomous traits using family-based controls results in similar power levels as the population-based design (although at an increased sequencing cost for the family-based design), while for continuous traits (in random samples, no ascertainment) the population-based design can be substantially more powerful. A possible disadvantage of population-based designs is that they can lead to increased false-positive rates in the presence of population stratification, while the family-based designs are robust to population stratification. We show also an application to a small exome-sequencing family-based study on autism spectrum disorders. The tests are implemented in publicly available software.
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20
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Hermans MP, Ahn SA, Rousseau MF. The multi-faceted outcomes of conjunct diabetes and cardiovascular familial history in type 2 diabetes. J Diabetes Complications 2012; 26:187-94. [PMID: 22521319 DOI: 10.1016/j.jdiacomp.2012.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 02/21/2012] [Accepted: 03/13/2012] [Indexed: 01/02/2023]
Abstract
BACKGROUND Familial history of early-onset CHD (EOCHD) is a major risk factor for CHD. Familial diabetes history (FDH) impacts β-cell function. Some transmissible, accretional gradient of CHD risk may exist when diabetes and EOCHD familial histories combine. We investigated whether the impact of such combination is neutral, additive, or potentiating in T2DM descendants, as regards cardiometabolic phenotype, glucose homeostasis and micro-/macroangiopathies. METHODS Cross-sectional retrospective cohort study of 796 T2DM divided according to presence (Diab[+]) or absence (Diab[-]) of 1st-degree diabetes familial history and/or EOCHD (CVD(+) and (-)). Four subgroups: (i) [Diab(-)CVD(-)] (n=355); (ii) [Diab(+)CVD(-)] (n=338); (iii) [Diab(-)CVD(+)] (n=47); and (iv) [Diab(+)CVD(+)] (n=56). RESULTS No interaction on subgroup distribution between presence of both familial histories, the combination of which translated into additive detrimental outcomes and higher rates of fat mass, sarcopenia, (hs)CRP and retinopathy. FDH(+) had lower insulinemia, insulin secretion, hyperbolic product, and accelerated hyperbolic product loss. An EOCHD family history affected neither insulin secretion nor sensitivity. There were significant differences regarding macroangiopathy/CAD, more prevalent in [Diab(-)CVD(+)] and [Diab(+)CVD(+)]. Among CVD(+), the highest macroangiopathy prevalence was observed in [Diab(-)CVD(+)], who had 66% macroangiopathy, and 57% CAD, rates higher (absolute-relative) by 23%-53% (overall) and 21%-58% (CAD) than [Diab(+)CVD(+)], who inherited the direst cardiometabolic familial history (p 0.0288 and 0.0310). CONCLUSIONS A parental history for diabetes markedly affects residual insulin secretion and secretory loss rate in T2DM offspring without worsening insulin resistance. It paradoxically translated into lower macroangiopathy with concurrent familial EOCHD. Conjunct diabetes and CV familial histories generate multi-faceted vascular outcomes in offspring, including lesser macroangiopathy/CAD.
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Affiliation(s)
- Michel P Hermans
- Division of Endocrinology and Nutrition, Université catholique de Louvain, Brussels, Belgium.
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21
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Patel S, Fraser A, Davey Smith G, Lindsay RS, Sattar N, Nelson SM, Lawlor DA. Associations of gestational diabetes, existing diabetes, and glycosuria with offspring obesity and cardiometabolic outcomes. Diabetes Care 2012; 35:63-71. [PMID: 22124718 PMCID: PMC3241309 DOI: 10.2337/dc11-1633] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess associations of gestational diabetes, existing diabetes, and glycosuria with adiposity and cardiometabolic risk factors in offspring at adolescence. RESEARCH DESIGN AND METHODS Multivariable regression analyses were conducted in a prospective pregnancy cohort (n = 2,563-4,198 for different outcomes). Obstetric data were abstracted from clinical records. Offspring outcomes were assessed at mean age 15.5 years. Compared with those lost to follow-up, participants included in the analysis were of higher socioeconomic position. Outcomes included BMI, waist circumference, fat mass determined by dual-energy X-ray absorptiometry scan, systolic and diastolic blood pressure (sBP and dBP, respectively), fasting glucose, insulin, lipids, and C-reactive protein (CRP). RESULTS Maternal existing diabetes, gestational diabetes, and glycosuria were associated with higher offspring BMI and fat mass (z scores); however, this effect was attenuated in the confounder-adjusted model, and the CIs included the null value. Existing diabetes and gestational diabetes were associated with higher offspring fasting glucose levels (0.24 mmol/L [95% CI 0.03-0.45] and 0.20 mmol/L [0.02-0.39], respectively). Glycosuria was associated with higher fasting insulin (adjusted ratio of geometric means 1.12 [1.01-1.25]), but there were no clear associations of existing or gestational diabetes with offspring fasting insulin. There was little evidence of an association of maternal diabetes or glycosuria with offspring dBP, sBP, lipids, or CRP. CONCLUSIONS Maternal pregnancy glycosuria, gestational diabetes, and existing diabetes show some associations with higher offspring fasting glucose and insulin assessed in adolescence but are not clearly associated with a wider range of cardiometabolic risk factors.
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Affiliation(s)
- Sumaiya Patel
- MRC (Medical Research Council) Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, UK.
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22
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Abbasi A, Corpeleijn E, van der Schouw YT, Stolk RP, Spijkerman AMW, van der A DL, Navis G, Bakker SJL, Beulens JWJ. Maternal and paternal transmission of type 2 diabetes: influence of diet, lifestyle and adiposity. J Intern Med 2011; 270:388-96. [PMID: 21251094 DOI: 10.1111/j.1365-2796.2011.02347.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Transmission of family history of type 2 diabetes to the next generation is stronger for maternal than paternal diabetes in some populations. The aim of the present study was to investigate whether this difference is explained by diet, lifestyle factors and/or adiposity. METHODS We analysed 35174 participants from the Dutch contribution to the European Prospective Investigation into Cancer and Nutrition, a prospective population-based cohort (aged 20-70 years) with a median follow-up of 10.2 years. Parental history of diabetes was self-reported. Occurrence of diabetes was mainly identified by self-report and verified by medical records. RESULTS Amongst 35174 participants, 799 incident cases of diabetes were observed. In age- and sex-adjusted analyses, hazard ratio (HR) and 95% confidence intervals (CIs) for diabetes by maternal and paternal diabetes were 2.66 (2.26-3.14) and 2.40 (1.91-3.02), respectively. Maternal transmission of risk of diabetes was explained by diet (9.4%), lifestyle factors including smoking, alcohol consumption, physical activity and educational level (7.8%) and by adiposity, i.e. body mass index and waist and hip circumference (23.5%). For paternal transmission, the corresponding values were 2.9%, 0.0% and 9.6%. After adjustment for diet, lifestyle factors and adiposity, the HRs for maternal (2.20; 95% CI, 1.87-2.60) and paternal (2.23; 95% CI, 1.77-2.80) transmission of diabetes were comparable. CONCLUSIONS Both maternal and paternal diabetes are associated with increased risk of type 2 diabetes, independently of diet, lifestyle and adiposity. The slightly higher risk conferred by maternal compared to paternal diabetes was explained by a larger contribution of diet, lifestyle factors and adiposity.
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Affiliation(s)
- A Abbasi
- Department of Epidemiology, University Medical Center Groningen, the Netherlands.
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Lawson HA, Cady JE, Partridge C, Wolf JB, Semenkovich CF, Cheverud JM. Genetic effects at pleiotropic loci are context-dependent with consequences for the maintenance of genetic variation in populations. PLoS Genet 2011; 7:e1002256. [PMID: 21931559 PMCID: PMC3169520 DOI: 10.1371/journal.pgen.1002256] [Citation(s) in RCA: 44] [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: 02/22/2011] [Accepted: 07/08/2011] [Indexed: 02/06/2023] Open
Abstract
Context-dependent genetic effects, including genotype-by-environment and genotype-by-sex interactions, are a potential mechanism by which genetic variation of complex traits is maintained in populations. Pleiotropic genetic effects are also thought to play an important role in evolution, reflecting functional and developmental relationships among traits. We examine context-dependent genetic effects at pleiotropic loci associated with normal variation in multiple metabolic syndrome (MetS) components (obesity, dyslipidemia, and diabetes-related traits). MetS prevalence is increasing in Western societies and, while environmental in origin, presents substantial variation in individual response. We identify 23 pleiotropic MetS quantitative trait loci (QTL) in an F16 advanced intercross between the LG/J and SM/J inbred mouse strains (Wustl:LG,SM-G16; n = 1002). Half of each family was fed a high-fat diet and half fed a low-fat diet; and additive, dominance, and parent-of-origin imprinting genotypic effects were examined in animals partitioned into sex, diet, and sex-by-diet cohorts. We examine the context-dependency of the underlying additive, dominance, and imprinting genetic effects of the traits associated with these pleiotropic QTL. Further, we examine sequence polymorphisms (SNPs) between LG/J and SM/J as well as differential expression of positional candidate genes in these regions. We show that genetic associations are different in different sex, diet, and sex-by-diet settings. We also show that over- or underdominance and ecological cross-over interactions for single phenotypes may not be common, however multidimensional synthetic phenotypes at loci with pleiotropic effects can produce situations that favor the maintenance of genetic variation in populations. Our findings have important implications for evolution and the notion of personalized medicine. We look at gene-by-diet and gene-by-sex interactions underlying natural variation in multiple metabolic traits mapping to the same regions of the genome in a mouse model. We find that the underlying genetic architecture of these traits is different in different sex and diet contexts. We further use expression data and whole-genome polymorphism data to identify compelling candidates for experimental follow-up. We use these results to examine theoretical evolutionary predictions about how variation in populations can be maintained. There has been much discussion of late on how to use evolutionary theory to inform medical genomics. Mouse models may be especially appropriate for bridging the divide between evolutionary and biomedical research, because they allow the study of the effects of natural alleles on normal variation and because human-mouse homology is well defined. Our study is unique in examining quantitative trait loci from both evolutionary and biomedical perspectives, and we highlight the complex connections of the traits comprising the metabolic syndrome and the evolutionary implications of their underlying genetic architecture. This is important for understanding disease etiology and is relevant to personalized medicine.
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Affiliation(s)
- Heather A Lawson
- Washington University in St Louis, St Louis, Missouri, United States of America.
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24
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Affiliation(s)
- Toni I Pollin
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
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25
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Lawson HA, Lee A, Fawcett GL, Wang B, Pletscher LS, Maxwell TJ, Ehrich TH, Kenney-Hunt JP, Wolf JB, Semenkovich CF, Cheverud JM. The importance of context to the genetic architecture of diabetes-related traits is revealed in a genome-wide scan of a LG/J × SM/J murine model. Mamm Genome 2011; 22:197-208. [PMID: 21210123 PMCID: PMC3650899 DOI: 10.1007/s00335-010-9313-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 12/03/2010] [Indexed: 10/18/2022]
Abstract
Variations in diabetic phenotypes are caused by complex interactions of genetic effects, environmental factors, and the interplay between the two. We tease apart these complex interactions by examining genome-wide genetic and epigenetic effects on diabetes-related traits among different sex, diet, and sex-by-diet cohorts in a Mus musculus model. We conducted a genome-wide scan for quantitative trait loci that affect serum glucose and insulin levels and response to glucose stress in an F(16) Advanced Intercross Line of the LG/J and SM/J intercross (Wustl:LG,SM-G16). Half of each sibship was fed a high-fat diet and half was fed a relatively low-fat diet. Context-dependent genetic (additive and dominance) and epigenetic (parent-of-origin imprinting) effects were characterized by partitioning animals into sex, diet, and sex-by-diet cohorts. We found that different cohorts often have unique genetic effects at the same loci, and that genetic signals can be masked or erroneously assigned to specific cohorts if they are not considered individually. Our data demonstrate that the effects of genes on complex trait variation are highly context-dependent and that the same genomic sequence can affect traits differently depending on an individual's sex and/or dietary environment. Our results have important implications for studies of complex traits in humans.
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Affiliation(s)
- Heather A Lawson
- Department of Anatomy & Neurobiology, Washington University School of Medicine, 3820 North Building, Campus Box 8108, St. Louis, MO 63110, USA.
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Abstract
Although genetics determines endocrine phenotypes, it cannot fully explain the great variability and reversibility of the system in response to environmental changes. Evidence now suggests that epigenetics, i.e. heritable but reversible changes in gene function without changes in nucleotide sequence, links genetics and environment in shaping endocrine function. Epigenetic mechanisms, including DNA methylation, histone modification, and microRNA, partition the genome into active and inactive domains based on endogenous and exogenous environmental changes and developmental stages, creating phenotype plasticity that can explain interindividual and population endocrine variability. We will review the current understanding of epigenetics in endocrinology, specifically, the regulation by epigenetics of the three levels of hormone action (synthesis and release, circulating and target tissue levels, and target-organ responsiveness) and the epigenetic action of endocrine disruptors. We will also discuss the impacts of hormones on epigenetics. We propose a three-dimensional model (genetics, environment, and developmental stage) to explain the phenomena related to progressive changes in endocrine functions with age, the early origin of endocrine disorders, phenotype discordance between monozygotic twins, rapid shifts in disease patterns among populations experiencing major lifestyle changes such as immigration, and the many endocrine disruptions in contemporary life. We emphasize that the key for understanding epigenetics in endocrinology is the identification, through advanced high-throughput screening technologies, of plasticity genes or loci that respond directly to a specific environmental stimulus. Investigations to determine whether epigenetic changes induced by today's lifestyles or environmental 'exposures' can be inherited and are reversible should open doors for applying epigenetics to the prevention and treatment of endocrine disorders.
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Affiliation(s)
- Xiang Zhang
- Department of Environmental Health, Center for Environmental Genetics, University of Cincinnati College of Medicine, 3223 Eden Avenue, Kettering Complex Suite 130, Cincinnati, Ohio 45267, USA
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27
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Lawson HA, Zelle KM, Fawcett GL, Wang B, Pletscher LS, Maxwell TJ, Ehrich TH, Kenney-Hunt JP, Wolf JB, Semenkovich CF, Cheverud JM. Genetic, epigenetic, and gene-by-diet interaction effects underlie variation in serum lipids in a LG/JxSM/J murine model. J Lipid Res 2010; 51:2976-84. [PMID: 20601649 PMCID: PMC2936764 DOI: 10.1194/jlr.m006957] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 07/02/2010] [Indexed: 11/20/2022] Open
Abstract
Variation in serum cholesterol, free-fatty acids, and triglycerides is associated with cardiovascular disease (CVD) risk factors. There is great interest in characterizing the underlying genetic architecture of these risk factors, because they vary greatly within and among human populations and between the sexes. We present results of a genome-wide scan for quantitative trait loci (QTL) affecting serum cholesterol, free-fatty acids, and triglycerides in an F(16) advanced intercross line of LG/J and SM/J (Wustl:LG,SM-G16). Half of the population was fed a high-fat diet and half was fed a relatively low-fat diet. Context-dependent genetic (additive and dominance) and epigenetic (imprinting) effects were characterized by partitioning animals into sex, diet, and sex-by-diet cohorts. Here we examine genetic, environmental, and genetic-by-environmental interactions of QTL overlapping previously identified loci associated with CVD risk factors, and we add to the serum lipid QTL landscape by identifying new loci.
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Affiliation(s)
- Heather A Lawson
- Department of Anatomy and Neurobiology, Washington University School of Medicine, St. Louis, MO, USA.
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Abstract
Genomic imprinting refers to a class of transmissible genetic effects in which the expression of the phenotype in the offspring depends on the parental origin of the transmitted allele. The DNA from one parent may be epigenetically modified so that only a single allele of the imprinted gene is expressed in the offspring. Although imprinting has an important role in the regulation of growth and development through its role in regulating gene expression, its contribution to susceptibility to common complex disorders is not well understood. We summarize current views on the role of imprinting in diabetes and in particular chromosome 6q24-related transient neonatal diabetes mellitus, the best known example of an imprinted genetic disorder that leads to diabetes.
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Affiliation(s)
- Braxton D Mitchell
- Division of Endocrinology, Diabetes and Nutrition, University of Maryland, 6601 West Redwood Street, Baltimore, MD 21201, USA.
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Barkalifa R, Yagil Y, Yagil C. Sex-specific genetic dissection of diabetes in a rodent model identifies Ica1 and Ndufa4 as major candidate genes. Physiol Genomics 2010; 42:445-55. [PMID: 20530722 DOI: 10.1152/physiolgenomics.00042.2010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of the study was to initiate a sex-specific investigation of the molecular basis of diabetes, using a genomic approach in the Cohen Diabetic rat model of diet-induced Type 2 diabetes. We used an F2 population resulting from a cross between Cohen Diabetic susceptible (CDs) and resistant (CDr) and consisting of 132 males and 159 females to detect relevant QTLs by linkage and cosegregation analyses. To confirm the functional relevance of the QTL, we applied the "chromosome substitution" strategy. We identified candidate genes within the quantitative trait locus (QTL) and studied their differential expression. We sequenced the differentially expressed candidate genes to account for differences in their expression. We confirmed in this new cross in males a previously detected major QTL on rat chromosome 4 (RNO4); we identified in females this major QTL as well. We found three additional diabetes-related QTLs on RNO11, 13, and 20 in females only. We pursued the investigation of the QTL on RNO4 and generated a CDs.4(CDr) consomic strain, which provided us with functional confirmation for the contribution of the QTL to the diabetic phenotype in both sexes. We successfully narrowed the QTL span to 2.6 cM and identified within it six candidate genes, but only two of which, Ica1 (islet cell autoantigen 1) and Ndufa4 (NADH dehydrogenase ubiquinone) were differentially expressed between CDs and CDr. We sequenced the exons and promoter regions of Ica1 and Ndufa4 but did not identify sequence variations between the strains. The detection of the QTL on RNO4 in both sexes suggests involvement of Ica1, Ndufa4, the Golgi apparatus, the mitochondria and genetic susceptibility to dietary-environmental factors in the pathophysiology of diabetes in our model. The additional sex-specific QTLs are likely to account for differences in the diabetic phenotype between the sexes.
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Affiliation(s)
- Ronit Barkalifa
- Faculty of Health Sciences, Ben-Gurion University, Barzilai Medical Center Campus, Ashkelon, Israel
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Ho DH, Burggren WW. Epigenetics and transgenerational transfer: a physiological perspective. ACTA ACUST UNITED AC 2010; 213:3-16. [PMID: 20008356 DOI: 10.1242/jeb.019752] [Citation(s) in RCA: 194] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Epigenetics, the transgenerational transfer of phenotypic characters without modification of gene sequence, is a burgeoning area of study in many disciplines of biology. However, the potential impact of this phenomenon on the physiology of animals is not yet broadly appreciated, in part because the phenomenon of epigenetics is not typically part of the design of physiological investigations. Still enigmatic and somewhat ill defined is the relationship between the overarching concept of epigenetics and interesting transgenerational phenomena (e.g. 'maternal/parental effects') that alter the physiological phenotype of subsequent generations. The lingering effect on subsequent generations of an initial environmental disturbance in parent animals can be profound, with genes continuing to be variously silenced or expressed without an associated change in gene sequence for many generations. Known epigenetic mechanisms involved in this phenomenon include chromatin remodeling (DNA methylation and histone modification), RNA-mediated modifications (non-coding RNA and microRNA), as well as other less well studied mechanisms such as self-sustaining loops and structural inheritance. In this review we: (1) discuss how the concepts of epigenetics and maternal effects both overlap with, and are distinct from, each other; (2) analyze examples of existing animal physiological studies based on these concepts; and (3) offer a construct by which to integrate these concepts into the design of future investigations in animal physiology.
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Affiliation(s)
- D H Ho
- Department of Biological Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203-5017, USA.
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Kong A, Steinthorsdottir V, Masson G, Thorleifsson G, Sulem P, Besenbacher S, Jonasdottir A, Sigurdsson A, Kristinsson KT, Jonasdottir A, Frigge ML, Gylfason A, Olason PI, Gudjonsson SA, Sverrisson S, Stacey SN, Sigurgeirsson B, Benediktsdottir KR, Sigurdsson H, Jonsson T, Benediktsson R, Olafsson JH, Johannsson OT, Hreidarsson AB, Sigurdsson G, Ferguson-Smith AC, Gudbjartsson DF, Thorsteinsdottir U, Stefansson K. Parental origin of sequence variants associated with complex diseases. Nature 2009; 462:868-74. [PMID: 20016592 PMCID: PMC3746295 DOI: 10.1038/nature08625] [Citation(s) in RCA: 464] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Accepted: 10/29/2009] [Indexed: 11/08/2022]
Abstract
Effects of susceptibility variants may depend on from which parent they are inherited. Although many associations between sequence variants and human traits have been discovered through genome-wide associations, the impact of parental origin has largely been ignored. Here we show that for 38,167 Icelanders genotyped using single nucleotide polymorphism (SNP) chips, the parental origin of most alleles can be determined. For this we used a combination of genealogy and long-range phasing. We then focused on SNPs that associate with diseases and are within 500 kilobases of known imprinted genes. Seven independent SNP associations were examined. Five-one with breast cancer, one with basal-cell carcinoma and three with type 2 diabetes-have parental-origin-specific associations. These variants are located in two genomic regions, 11p15 and 7q32, each harbouring a cluster of imprinted genes. Furthermore, we observed a novel association between the SNP rs2334499 at 11p15 and type 2 diabetes. Here the allele that confers risk when paternally inherited is protective when maternally transmitted. We identified a differentially methylated CTCF-binding site at 11p15 and demonstrated correlation of rs2334499 with decreased methylation of that site.
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Affiliation(s)
| | | | - Gisli Masson
- deCODE genetics, Sturlugata 8, 101 Reykjavík, Iceland
| | | | - Patrick Sulem
- deCODE genetics, Sturlugata 8, 101 Reykjavík, Iceland
| | | | | | | | | | | | | | | | | | | | | | | | - Bardur Sigurgeirsson
- Department of Dermatology, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | | | - Helgi Sigurdsson
- Department of Oncology, Landspitali-University Hospital, 101 Reykjavík, Iceland
| | - Thorvaldur Jonsson
- Department of Surgery, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | - Rafn Benediktsson
- Department of Endocrinology and Metabolism, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | - Jon H. Olafsson
- Department of Dermatology, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | | | - Astradur B. Hreidarsson
- Department of Endocrinology and Metabolism, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | - Gunnar Sigurdsson
- Department of Endocrinology and Metabolism, Landspitali-University Hospital, 101 Reykjavik, Iceland
| | | | | | | | - Unnur Thorsteinsdottir
- deCODE genetics, Sturlugata 8, 101 Reykjavík, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
| | - Kari Stefansson
- deCODE genetics, Sturlugata 8, 101 Reykjavík, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
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