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Richards-Steed R, Wan N, Bakian A, Medina RM, Brewer SC, Smith KR, VanDerslice JA. Observational methods for human studies of transgenerational effects. Epigenetics 2024; 19:2366065. [PMID: 38870389 PMCID: PMC11178273 DOI: 10.1080/15592294.2024.2366065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024] Open
Abstract
There are substantial challenges in studying human transgenerational epigenetic outcomes resulting from environmental conditions. The task requires specialized methods and tools that incorporate specific knowledge of multigenerational relationship combinations of probands and their ancestors, phenotype data for individuals, environmental information of ancestors and their descendants, which can span historical to present datasets, and informative environmental data that chronologically aligns with ancestors and descendants over space and time. As a result, there are few epidemiologic studies of potential transgenerational effects in human populations, thus limiting the knowledge of ancestral environmental conditions and the potential impacts we face with modern human health outcomes. In an effort to overcome some of the challenges in studying human transgenerational effects, we present two transgenerational study designs: transgenerational space-time cluster detection and transgenerational case-control study design. Like other epidemiological methods, these methods determine whether there are statistical associations between phenotypic outcomes (e.g., adverse health outcomes) among probands and the shared environments and environmental factors facing their ancestors. When the ancestor is a paternal grandparent, a statistically significant association provides some evidence that a transgenerational inheritable factor may be involved. Such results may generate useful hypotheses that can be explored using epigenomic data to establish conclusive evidence of transgenerational heritable effects. Both methods are proband-centric: They are designed around the phenotype of interest in the proband generation for case selection and family pedigree creation. In the examples provided, we incorporate at least three generations of paternal lineage in both methods to observe a potential transgenerational effect.
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Affiliation(s)
| | - Neng Wan
- Geography, University of Utah Department of Geography, Salt Lake City, UT, USA
| | - Amanda Bakian
- Psychiatry, University of Utah Health, Salt Lake City, UT, USA
| | - Richard M. Medina
- Geography, University of Utah Department of Geography, Salt Lake City, UT, USA
| | - Simon C. Brewer
- Geography, University of Utah Department of Geography, Salt Lake City, UT, USA
| | - Ken R. Smith
- Child and Consumer Studies, University of Utah Health, Salt Lake City, UT, USA
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Lo JO, Hedges JC, Chou WH, Tager KR, Bachli ID, Hagen OL, Murphy SK, Hanna CB, Easley CA. Influence of substance use on male reproductive health and offspring outcomes. Nat Rev Urol 2024:10.1038/s41585-024-00868-w. [PMID: 38664544 DOI: 10.1038/s41585-024-00868-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/29/2024] [Indexed: 04/30/2024]
Abstract
The prevalence of substance use globally is rising and is highest among men of reproductive age. In Africa, and South and Central America, cannabis use disorder is most prevalent and in Eastern and South-Eastern Europe, Central America, Canada and the USA, opioid use disorder predominates. Substance use might be contributing to the ongoing global decline in male fertility, and emerging evidence has linked paternal substance use with short-term and long-term adverse effects on offspring development and outcomes. This trend is concerning given that substance use is increasing, including during the COVID-19 pandemic. Preclinical studies have shown that male preconception substance use can influence offspring brain development and neurobehaviour through epigenetic mechanisms. Additionally, human studies investigating paternal health behaviours during the prenatal period suggest that paternal tobacco, opioid, cannabis and alcohol use is associated with reduced offspring mental health, in particular hyperactivity and attention-deficit hyperactivity disorder. The potential effects of paternal substance use are areas in which to focus public health efforts and health-care provider counselling of couples or individuals interested in conceiving.
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Affiliation(s)
- Jamie O Lo
- Department of Urology, Oregon Heath & Science University, Portland, OR, USA.
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA.
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR, USA.
| | - Jason C Hedges
- Department of Urology, Oregon Heath & Science University, Portland, OR, USA
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
- Department of Obstetrics and Gynecology, Oregon Health & Science University, Portland, OR, USA
| | - Wesley H Chou
- Department of Urology, Oregon Heath & Science University, Portland, OR, USA
| | - Kylie R Tager
- Department of Environmental Health Science, University of Georgia College of Public Health, Athens, GA, USA
| | - Ian D Bachli
- Department of Environmental Health Science, University of Georgia College of Public Health, Athens, GA, USA
| | - Olivia L Hagen
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Susan K Murphy
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Carol B Hanna
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Charles A Easley
- Department of Environmental Health Science, University of Georgia College of Public Health, Athens, GA, USA
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3
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Panier S, Wang S, Schumacher B. Genome Instability and DNA Repair in Somatic and Reproductive Aging. ANNUAL REVIEW OF PATHOLOGY 2024; 19:261-290. [PMID: 37832947 DOI: 10.1146/annurev-pathmechdis-051122-093128] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2023]
Abstract
Genetic material is constantly subjected to genotoxic insults and is critically dependent on DNA repair. Genome maintenance mechanisms differ in somatic and germ cells as the soma only requires maintenance during an individual's lifespan, while the germline indefinitely perpetuates its genetic information. DNA lesions are recognized and repaired by mechanistically highly diverse repair machineries. The DNA damage response impinges on a vast array of homeostatic processes and can ultimately result in cell fate changes such as apoptosis or cellular senescence. DNA damage causally contributes to the aging process and aging-associated diseases, most prominently cancer. By causing mutations, DNA damage in germ cells can lead to genetic diseases and impact the evolutionary trajectory of a species. The mechanisms ensuring tight control of germline DNA repair could be highly instructive in defining strategies for improved somatic DNA repair. They may provide future interventions to maintain health and prevent disease during aging.
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Affiliation(s)
- Stephanie Panier
- Institute for Genome Stability in Aging and Disease and Cluster of Excellence: Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne and University Hospital of Cologne, Cologne, Germany;
- Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Siyao Wang
- Institute for Genome Stability in Aging and Disease and Cluster of Excellence: Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne and University Hospital of Cologne, Cologne, Germany;
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Institute of Molecular Biology (IMB), Mainz, Germany
| | - Björn Schumacher
- Institute for Genome Stability in Aging and Disease and Cluster of Excellence: Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne and University Hospital of Cologne, Cologne, Germany;
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
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Siegel MR, Rocheleau CM, Hollerbach BS, Omari A, Jahnke SA, Almli LM, Olshan AF. Birth defects associated with paternal firefighting in the National Birth Defects Prevention Study. Am J Ind Med 2023; 66:30-40. [PMID: 36345775 PMCID: PMC9969860 DOI: 10.1002/ajim.23441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/30/2022] [Accepted: 10/27/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Few studies have evaluated birth defects among children of firefighters. We investigated associations between birth defects and paternal work as a firefighter compared to work in non-firefighting and police officer occupations. METHODS We analyzed 1997-2011 data from the multi-site case-control National Birth Defects Prevention Study. Cases included fetuses or infants with major structural birth defects and controls included a random sample of live-born infants without major birth defects. Mothers of infants self-reported information about parents' occupations held during pregnancy. We investigated associations between paternal firefighting and birth defect groups using logistic regression to estimate odds ratios (ORs) and 95% confidence intervals (CIs). Referent groups included families reporting fathers working non-firefighting and police officer jobs. RESULTS Occupational groups included 227 firefighters, 36,285 non-firefighters, and 433 police officers. Twenty-nine birth defects were analyzed. In adjusted analyses, fathers of children with total anomalous pulmonary venous return (TAPVR; OR = 3.1; 95% CI = 1.1-8.7), cleft palate (OR = 1.8; 95% CI = 1.0-3.3), cleft lip (OR = 2.2; 95% CI = 1.2-4.2), and transverse limb deficiency (OR = 2.2; 95% CI = 1.1-4.7) were more likely than fathers of controls to be firefighters, versus non-firefighters. In police-referent analyses, fathers of children with cleft palate were 2.4 times more likely to be firefighters than fathers of controls (95% CI = 1.1-5.4). CONCLUSIONS Paternal firefighting may be associated with an elevated risk of birth defects in offspring. Additional studies are warranted to replicate these findings. Further research may contribute to a greater understanding of the reproductive health of firefighters and their families for guiding workplace practices.
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Affiliation(s)
- Miriam R. Siegel
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and HealthCincinnatiOhioUSA
| | - Carissa M. Rocheleau
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and HealthCincinnatiOhioUSA
| | | | - Amel Omari
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and HealthCincinnatiOhioUSA
| | - Sara A. Jahnke
- Center for Fire, Rescue, and EMS Health ResearchNDRI‐USA, IncLeawoodKansasUSA
| | - Lynn M. Almli
- Division of Birth Defects and Infant DisordersNational Center on Birth Defects and Developmental Disabilities, CDCAtlantaGeorgiaUSA
| | - Andrew F. Olshan
- Department of Epidemiology, Gillings School of Global Public HealthUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
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Escher J, Yan W, Rissman EF, Wang HLV, Hernandez A, Corces VG. Beyond Genes: Germline Disruption in the Etiology of Autism Spectrum Disorders. J Autism Dev Disord 2022; 52:4608-4624. [PMID: 34596807 PMCID: PMC9035896 DOI: 10.1007/s10803-021-05304-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2021] [Indexed: 01/31/2023]
Abstract
Investigations into the etiology of autism spectrum disorders have been largely confined to two realms: variations in DNA sequence and somatic developmental exposures. Here we suggest a third route-disruption of the germline epigenome induced by exogenous toxicants during a parent's gamete development. Similar to cases of germline mutation, these molecular perturbations may produce dysregulated transcription of brain-related genes during fetal and early development, resulting in abnormal neurobehavioral phenotypes in offspring. Many types of exposures may have these impacts, and here we discuss examples of anesthetic gases, tobacco components, synthetic steroids, and valproic acid. Alterations in parental germline could help explain some unsolved phenomena of autism, including increased prevalence, missing heritability, skewed sex ratio, and heterogeneity of neurobiology and behavior.
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Affiliation(s)
- Jill Escher
- Escher Fund for Autism, 1590 Calaveras Avenue, San Jose, CA, USA.
| | - Wei Yan
- The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Emilie F Rissman
- Center for Human Health and the Environment and Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Hsiao-Lin V Wang
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
| | - Arturo Hernandez
- Maine Medical Center Research Institute, MaineHealth, Scarborough, ME, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Victor G Corces
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA, USA
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Godschalk RWL, Janssen MCM, Vanhees K, van Doorn-Khosrovani SBVW, van Schooten FJ. Maternal exposure to genistein during pregnancy and oxidative DNA damage in testes of male mouse offspring. Front Nutr 2022; 9:904368. [PMID: 35923192 PMCID: PMC9340160 DOI: 10.3389/fnut.2022.904368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/24/2022] [Indexed: 11/17/2022] Open
Abstract
Background Genistein is a dietary supplement with phyto-estrogenic properties. Therefore, high intake of genistein during pregnancy may have adverse effects on the genetic integrity of testes and germ cells of male offspring. In this study, we examined whether maternal exposure to genistein during pregnancy induced oxidative DNA damage in the male germline at adolescence. Methods Atm-ΔSRI mice have lower glucose-6-phosphate dehydrogenase (G6PDH) activity, which is important for maintaining levels of reduced glutathione and therefore these mice have an increased susceptibility to oxidative stress. Parental heterozygous Atm-ΔSRI mice received a genistein-rich or control diet, after which they were mated to obtain offspring. During pregnancy, mothers remained on the respective diets and after delivery all animals received control diets. Redox status and oxidative DNA damage were assessed in testes and sperm of 12 weeks old male offspring. Gene expression of Cyp1b1, Comt, and Nqo1 was assessed in testes, and DNA methylation as possible mechanism for transmission of effects to later life. Results Intake of genistein during pregnancy increased oxidative DNA damage in testes of offspring, especially in heterozygous Atm-ΔSRI mice. These increased DNA damage levels coincided with decreased expression of Comt and Nqo1. Heterozygous Atm-ΔSRI mice had higher levels of DNA strand breaks in sperm compared to wild type littermates, and DNA damage was further enhanced by a genistein-rich maternal diet. G6PDH activity was higher in mice with high maternal intake of genistein compared to control diets, suggesting compensation against oxidative stress. A positive correlation was observed between the levels of DNA methylation and oxidative DNA damage in testes. Conclusion These data indicate that prenatal exposure to genistein altered gene expression and increased DNA damage in testes and sperm of adolescent male offspring. These effects of genistein on DNA damage in later life coincided with alterations in DNA methylation.
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Fico G, Oliva V, De Prisco M, Giménez-Palomo A, Sagué-Vilavella M, Gomes-da-Costa S, Garriga M, Solé E, Valentí M, Fanelli G, Serretti A, Fornaro M, Carvalho AF, Vieta E, Murru A. The U-shaped relationship between parental age and the risk of bipolar disorder in the offspring: A systematic review and meta-analysis. Eur Neuropsychopharmacol 2022; 60:55-75. [PMID: 35635997 DOI: 10.1016/j.euroneuro.2022.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 01/06/2023]
Abstract
Parenthood age may affect the risk for the development of different psychiatric disorders in the offspring, including bipolar disorder (BD). The present systematic review and meta-analysis aimed to appraise the relationship between paternal age and risk for BD and to explore the eventual relationship between paternal age and age at onset of BD. We searched the MEDLINE, Scopus, Embase, PsycINFO online databases for original studies from inception, up to December 2021. Random-effects meta-analyses were conducted. Sixteen studies participated in the qualitative synthesis, of which k = 14 fetched quantitative data encompassing a total of 13,424,760 participants and 217,089 individuals with BD. Both fathers [adjusted for the age of other parent and socioeconomic status odd ratio - OR = 1.29(95%C.I. = 1.13-1.48)] and mothers aged ≤ 20 years [(OR = 1.23(95%C.I. = 1.14-1.33)] had consistently increased odds of BD diagnosis in their offspring compared to parents aged 25-29 years. Fathers aged ≥ 45 years [adjusted OR = 1.29 (95%C.I. = 1.15-1.46)] and mothers aged 35-39 years [OR = 1.10(95%C.I. = 1.01-1.19)] and 40 years or older [OR = 1.2(95% C.I. = 1.02-1.40)] likewise had inflated odds of BD diagnosis in their offspring compared to parents aged 25-29 years. Early and delayed parenthood are associated with an increased risk of BD in the offspring. Mechanisms underlying this association are largely unknown and may involve a complex interplay between psychosocial, genetic and biological factors, and with different impacts according to sex and age range. Evidence on the association between parental age and illness onset is still tentative but it points towards a possible specific effect of advanced paternal age on early BD-onset.
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Affiliation(s)
- Giovanna Fico
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Vincenzo Oliva
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Michele De Prisco
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain; Department of Neuroscience, Section of Psychiatry, Reproductive Science and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Anna Giménez-Palomo
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Maria Sagué-Vilavella
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Susana Gomes-da-Costa
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Marina Garriga
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Eva Solé
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Marc Valentí
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Giuseppe Fanelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Alessandro Serretti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Michele Fornaro
- Department of Neuroscience, Section of Psychiatry, Reproductive Science and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Andre F Carvalho
- IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Vic., Australia 6 Perinatal Health Unit, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, Deakin University, Barcelona, Catalonia, Spain
| | - Eduard Vieta
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain.
| | - Andrea Murru
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
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Yim G, Roberts A, Ascherio A, Wypij D, Kioumourtzoglou MA, Weisskopf AMG. Smoking During Pregnancy and Risk of Attention-deficit/Hyperactivity Disorder in the Third Generation. Epidemiology 2022; 33:431-440. [PMID: 35213510 PMCID: PMC9010055 DOI: 10.1097/ede.0000000000001467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Animal experiments indicate that environmental factors, such as cigarette smoke, can have multigenerational effects through the germline. However, there are little data on multigenerational effects of smoking in humans. We examined the associations between grandmothers' smoking while pregnant and risk of attention-deficit/hyperactivity disorder (ADHD) in her grandchildren. METHODS Our study population included 53,653 Nurses' Health Study II (NHS-II) participants (generation 1 [G1]), their mothers (generation 0 [G0]), and their 120,467 live-born children (generation 2 [G2]). In secondary analyses, we used data from 23,844 mothers of the nurses who were participants in the Nurses' Mothers' Cohort Study (NMCS), a substudy of NHS-II. RESULTS The prevalence of G0 smoking during the pregnancy with the G1 nurse was 25%. ADHD was diagnosed in 9,049 (7.5%) of the grandchildren (G2). Grand-maternal smoking during pregnancy was associated with increased odds of ADHD among the grandchildren (adjusted odds ratio [aOR] = 1.2; 95% confidence interval [CI] = 1.1, 1.2), independent of G1 smoking during pregnancy. In the Nurses' Mothers' Cohort Study, odds of ADHD increased with increasing cigarettes smoked per day by the grandmother (1-14 cigarettes: aOR = 1.1; 95% CI = 1.0, 1.2; 15+: aOR = 1.2; 95% CI = 1.0, 1.3), compared with nonsmoking grandmothers. CONCLUSIONS Grandmother smoking during pregnancy is associated with an increased risk of ADHD among the grandchildren.
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Affiliation(s)
- Gyeyoon Yim
- From the Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Andrea Roberts
- From the Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Alberto Ascherio
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA
| | - David Wypij
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA
- Department of Cardiology, Children's Hospital Boston, Boston, MA
| | | | - And Marc G Weisskopf
- From the Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
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Gajski G, Ravlić S, Godschalk R, Collins A, Dusinska M, Brunborg G. Application of the comet assay for the evaluation of DNA damage in mature sperm. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108398. [PMID: 34893163 DOI: 10.1016/j.mrrev.2021.108398] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/26/2021] [Accepted: 11/05/2021] [Indexed: 06/14/2023]
Abstract
DNA integrity is considered an important parameter of semen quality and is of significant value as a predictor of male fertility. Currently, there are several methods that can assess sperm DNA integrity. One such assay is the comet assay, or single-cell gel electrophoresis, which is a simple, sensitive, reliable, quick and low-cost technique that is used for measuring DNA strand breaks and repair at the level of individual cells. Although the comet assay is usually performed with somatic cells from different organs, the assay has the ability to detect genotoxicity in germ cells at different stages of spermatogenesis. Since the ability of sperm to remove DNA damage differs between the stages, interpretation of the results is dependent on the cells used. In this paper we give an overview on the use and applications of the comet assay on mature sperm and its ability to detect sperm DNA damage in both animals and humans. Overall, it can be concluded that the presence in sperm of significantly damaged DNA, assessed by the comet assay, is related to male infertility and seems to reduce live births. Although there is some evidence that sperm DNA damage also has a long-term impact on offspring's health, this aspect of DNA damage in sperm is understudied and deserves further attention. In summary, the comet assay can be applied as a useful tool to study effects of genotoxic exposures on sperm DNA integrity in animals and humans.
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Affiliation(s)
- Goran Gajski
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia.
| | - Sanda Ravlić
- University of Zagreb, Centre for Research and Knowledge Transfer in Biotechnology, Zagreb, Croatia
| | - Roger Godschalk
- Maastricht University, School for Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology & Toxicology, Maastricht, the Netherlands
| | - Andrew Collins
- University of Oslo, Institute of Basic Medical Sciences, Department of Nutrition, Oslo, Norway
| | - Maria Dusinska
- Norwegian Institute for Air Research (NILU), Department of Environmental Chemistry, Health Effects Laboratory, Kjeller, Norway
| | - Gunnar Brunborg
- Norwegian Institute of Public Health (NIPH), Section of Molecular Toxicology, Department of Environmental Health, Oslo, Norway
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Aitken RJ, Bakos HW. Should we be measuring DNA damage in human spermatozoa? New light on an old question. Hum Reprod 2021; 36:1175-1185. [PMID: 33532854 DOI: 10.1093/humrep/deab004] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/29/2020] [Indexed: 12/13/2022] Open
Abstract
Assessments of sperm DNA damage are controversial because of perceived uncertainties over the relationship with pregnancy and the limited range of therapies available should positive results be returned. In this article, we highlight recent data supporting a chain of associations between oxidative stress in the male germ line, DNA damage in spermatozoa, defective DNA repair in the oocyte, the mutational load carried by the resulting embryo and the long-term health trajectory of the offspring. Any condition capable of generating oxidative damage in spermatozoa (age, obesity, smoking, prolonged abstinence, varicocele, chemical exposures, radiation etc.) is capable of influencing offspring health in this manner, creating a range of pathologies in the progeny including neuropsychiatric disorders and cancer. If sperm DNA damage is detected, there are several therapeutic interventions that can be introduced to improve DNA quality prior to the use of these cells in ART. We therefore argue that infertility specialists should be engaged in the diagnosis and remediation of sperm DNA damage as a matter of best practice, in order to minimize the risk of adverse health outcomes in children conceived using ART.
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Affiliation(s)
- R John Aitken
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Hassan W Bakos
- Priority Research Centre for Reproductive Science, University of Newcastle, Callaghan, NSW 2308, Australia
- Monash IVF Group Limited, Level 2, 1 Fennell Street, Parramatta, NSW 2151 Australia
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11
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Zeid D, Goldberg LR, Seemiller LR, Mooney-Leber S, Smith PB, Gould TJ. Multigenerational nicotine exposure affects offspring nicotine metabolism, nicotine-induced hypothermia, and basal corticosterone in a sex-dependent manner. Neurotoxicol Teratol 2021; 85:106972. [PMID: 33727150 DOI: 10.1016/j.ntt.2021.106972] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/01/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022]
Abstract
Parental nicotine exposure can impact phenotypes in unexposed offspring. Our laboratory recently published data showing that nicotine reward and hippocampal gene expression involved in stress pathways were perturbed in F1 offspring of male C57BL/6J mice chronically exposed to nicotine. For the current study, we aimed to further test nicotine and stress-sensitivity phenotypes that may predict vulnerability to nicotine addiction in new cohorts of F1 offspring derived from nicotine-exposed males. We tested locomotor and body temperature sensitivity to acute nicotine administration, serum concentration of nicotine and nicotine metabolites after acute nicotine dosing, and serum corticosterone levels in male and female F1 offspring of nicotine- or saline-exposed males. Paternal nicotine exposure reduced sensitivity to nicotine-induced hypothermia in males, altered nicotine metabolite concentrations in males and females, and reduced serum basal corticosterone levels in females. These findings may point to reduced susceptibility to nicotine addiction-related phenotypes as a result of parental nicotine exposure.
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Affiliation(s)
- Dana Zeid
- Department of Biobehavioral Health, Penn State University, University Park, PA, USA.
| | - Lisa R Goldberg
- Department of Biobehavioral Health, Penn State University, University Park, PA, USA
| | - Laurel R Seemiller
- Department of Biobehavioral Health, Penn State University, University Park, PA, USA
| | - Sean Mooney-Leber
- Department of Psychology, University of Wisconsin-Stevens Point, Stevens Point, WI, USA
| | - Philip B Smith
- The Huck Institutes of the Life Sciences, Penn State University, University Park, PA, USA
| | - Thomas J Gould
- Department of Biobehavioral Health, Penn State University, University Park, PA, USA
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12
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Zhang D, Dai J, Zhang M, Xie Y, Cao Y, He G, Xu W, Wang L, Qiao Z, Qiao Z. Paternal nicotine exposure promotes hepatic fibrosis in offspring. Toxicol Lett 2021; 343:44-55. [PMID: 33640489 DOI: 10.1016/j.toxlet.2021.02.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/29/2021] [Accepted: 02/22/2021] [Indexed: 02/06/2023]
Abstract
Paternal nicotine exposure can alter phenotypes in future generations. The aim of this study is to explore whether paternal nicotine exposure affects the hepatic repair to chronic injury which leads to hepatic fibrosis in offspring. Our results demonstrate that nicotine down regulates mmu-miR-15b expression via the hyper-methylation on its CpG island shore region in the spermatozoa. This epigenetic modification imprinted in the liver of the offspring. The decreased mmu-miR-15b promotes the expression of Wnt4 and activates the Wnt pathway in the offspring mice liver. The activation of the Wnt pathway improves the activation and proliferation of hepatic stellate cells (HSCs) leading to liver fibrosis. Moreover, the Wnt pathway promotes the activation of the TGF-β pathway and the two pathways cooperate to promote the transcription of extracellular matrix (ECM) genes. In conclusion, this study found that nicotine promotes hepatic fibrosis in the offspring via the activation of Wnt pathway by imprinting the hyper-methylation of mmu-miR-15b.
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Affiliation(s)
- Dong Zhang
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Jingbo Dai
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University, 225 E Chicago Ave, Chicago, IL, 60611, USA
| | - Meixing Zhang
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yilin Xie
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Yong Cao
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Guang He
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Wangjie Xu
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Lianyun Wang
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Zhiguang Qiao
- Renji Hospital, South Campus, Shanghai Jiao Tong University School of Medicine, Shanghai, 201112, China
| | - Zhongdong Qiao
- School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
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13
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Jawaid A, Jehle KL, Mansuy IM. Impact of Parental Exposure on Offspring Health in Humans. Trends Genet 2020; 37:373-388. [PMID: 33189388 DOI: 10.1016/j.tig.2020.10.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/12/2020] [Accepted: 10/16/2020] [Indexed: 12/11/2022]
Abstract
The possibility that parental life experiences and environmental exposures influence mental and physical health across generations is an important concept in biology and medicine. Evidence from animal models has established the existence of a non-genetic mode of inheritance. This form of heredity involves transmission of the effects of parental exposure to the offspring through epigenetic changes in the germline. Studying the mechanisms of epigenetic inheritance in humans is challenging because it is difficult to obtain multigeneration cohorts, to collect reproductive cells in exposed parents, and to exclude psychosocial and cultural confounders. Nonetheless, epidemiological studies in humans exposed to famine, stress/trauma, or toxicants have provided evidence that parental exposure can impact the health of descendants, in some cases, across several generations. A few studies have also started to reveal epigenetic changes in the periphery and sperm after certain exposures. This article reviews these studies and evaluates the current evidence for the potential contribution of epigenetic factors to heredity in humans. The challenges and limitations of this fundamental biological process, its implications, and its societal relevance are also discussed.
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Affiliation(s)
- Ali Jawaid
- Laboratory of Neuroepigenetics, Brain Research Institute, Medical Faculty of the University of Zurich, Zürich, Switzerland; Institute for Neuroscience, Department of Health Science and Technology of the Swiss Federal Institute of Technology (ETH), Zürich, Switzerland; BRAINCITY EMBL-Nencki Center of Excellence for Neural Plasticity and Brain Disorders, Nencki Institute of Experimental Biology, Warsaw, Poland; Department of Neurology, University of Texas Health Science Center, Houston, TX, USA
| | | | - Isabelle M Mansuy
- Laboratory of Neuroepigenetics, Brain Research Institute, Medical Faculty of the University of Zurich, Zürich, Switzerland; Institute for Neuroscience, Department of Health Science and Technology of the Swiss Federal Institute of Technology (ETH), Zürich, Switzerland.
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14
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Bline AP, Dearfield KL, DeMarini DM, Marchetti F, Yauk CL, Escher J. Heritable hazards of smoking: Applying the "clean sheet" framework to further science and policy. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:910-921. [PMID: 33064321 PMCID: PMC7756471 DOI: 10.1002/em.22412] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/26/2020] [Accepted: 10/11/2020] [Indexed: 05/06/2023]
Abstract
All the cells in our bodies are derived from the germ cells of our parents, just as our own germ cells become the bodies of our children. The integrity of the genetic information inherited from these germ cells is of paramount importance in establishing the health of each generation and perpetuating our species into the future. There is a large and growing body of evidence strongly suggesting the existence of substances that may threaten this integrity by acting as human germ cell mutagens. However, there generally are no absolute regulatory requirements to test agents for germ cell effects. In addition, the current regulatory testing paradigms do not evaluate the impacts of epigenetically mediated intergenerational effects, and there is no regulatory framework to apply new and emerging tests in regulatory decision making. At the 50th annual meeting of the Environmental Mutagenesis and Genomics Society held in Washington, DC, in September 2019, a workshop took place that examined the heritable effects of hazardous exposures to germ cells, using tobacco smoke as the example hazard. This synopsis provides a summary of areas of concern regarding heritable hazards from tobacco smoke exposures identified at the workshop and the value of the Clean Sheet framework in organizing information to address knowledge and testing gaps.
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Affiliation(s)
- Abigail P. Bline
- Fielding School of Public HealthUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | | | | | - Francesco Marchetti
- Environmental Health Science Research Bureau, Health CanadaOttawaOntarioCanada
| | - Carole L. Yauk
- Department of BiologyUniversity of OttawaOttawaOntarioCanada
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15
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Eubanks AA, Nobles CJ, Hill MJ, DeCherney AH, Kim K, Sjaarda LA, Perkins NJ, Ye A, Zolton JR, Silver RM, Schisterman EF, Mumford SL. Recalled maternal lifestyle behaviors associated with anti-müllerian hormone of adult female offspring. Reprod Toxicol 2020; 98:75-81. [PMID: 32916273 DOI: 10.1016/j.reprotox.2020.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/18/2020] [Accepted: 08/27/2020] [Indexed: 11/17/2022]
Abstract
Anti-müllerian hormone (AMH) is an established marker of ovarian reserve that decreases with age. Though the pool of ovarian follicles is established during fetal development, impacts of in utero exposures on AMH are uncertain. Thus, we sought to evaluate associations of in utero exposures with AMH of adult daughters with a prospective cohort study of adult daughters at university medical centers. Women noted their mother's reported use of diethylstilbestrol (DES), vitamins, tobacco, alcohol, and caffeine during pregnancy, and their mother's occupation during pregnancy. All participants were reproductive age women (18-40 years) enrolled in the Effects of Aspirin in Gestation and Reproduction (EAGeR) trial. Serum AMH concentrations were measured at baseline prior to conception and categorized using clinical guidelines. Multinomial regression models estimated associations between each exposure and high (>3.5 ng/mL) and low (<1.0 ng/mL) versus normal AMH (1.0-3.5 ng/mL), adjusting for participant's age, mother's age, mother's history of fertility treatment, and mother's use of vitamins. In 1202 women with available data, maternal caffeine use was associated with an increased risk of low AMH, compared to normal (relative risk [RR] 1.90, 95 % confidence interval [CI] 1.09, 3.30). Vitamins were associated with an increased risk of high AMH compared to normal (RR 1.93, 95 % CI 1.24, 3.00). Other exposures were not associated with AMH concentrations in offspring. Maternal caffeine and vitamin use during pregnancy may be associated with ovarian reserve in adult offspring, highlighting the potential importance of pregnancy lifestyle on the reproductive health of daughters.
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Affiliation(s)
- Allison A Eubanks
- Department of Obstetrics and Gynecology, Walter Reed National Military Medical Center, 8901 Rockville Pike, Bethesda, MD, 20852, United States
| | - Carrie J Nobles
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Micah J Hill
- Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Alan H DeCherney
- Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Keewan Kim
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Lindsey A Sjaarda
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Neil J Perkins
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Aijun Ye
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Jessica R Zolton
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States; Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
| | - Robert M Silver
- Department of Obstetrics and Gynecology, University of Utah Health Sciences Center, Room 2B200 SOM, 50 North Medical Drive, Salt Lake City, UT, 84132, United States
| | - Enrique F Schisterman
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States.
| | - Sunni L Mumford
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, United States
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16
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Murphy PJ, Guo J, Jenkins TG, James ER, Hoidal JR, Huecksteadt T, Broberg DS, Hotaling JM, Alonso DF, Carrell DT, Cairns BR, Aston KI. NRF2 loss recapitulates heritable impacts of paternal cigarette smoke exposure. PLoS Genet 2020; 16:e1008756. [PMID: 32520939 PMCID: PMC7307791 DOI: 10.1371/journal.pgen.1008756] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/22/2020] [Accepted: 04/03/2020] [Indexed: 12/16/2022] Open
Abstract
Paternal cigarette smoke (CS) exposure is associated with increased risk of behavioral disorders and cancer in offspring, but the mechanism has not been identified. Here we use mouse models to investigate mechanisms and impacts of paternal CS exposure. We demonstrate that CS exposure induces sperm DNAme changes that are partially corrected within 28 days of removal from CS exposure. Additionally, paternal smoking is associated with changes in prefrontal cortex DNAme and gene expression patterns in offspring. Remarkably, the epigenetic and transcriptional effects of CS exposure that we observed in wild type mice are partially recapitulated in Nrf2-/- mice and their offspring, independent of smoking status. Nrf2 is a central regulator of antioxidant gene transcription, and mice lacking Nrf2 consequently display elevated oxidative stress, suggesting that oxidative stress may underlie CS-induced heritable epigenetic changes. Importantly, paternal sperm DNAme changes do not overlap with DNAme changes measured in offspring prefrontal cortex, indicating that the observed DNAme changes in sperm are not directly inherited. Additionally, the changes in sperm DNAme associated with CS exposure were not observed in sperm of unexposed offspring, suggesting the effects are likely not maintained across multiple generations.
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Affiliation(s)
- Patrick J. Murphy
- Department of Biomedical Genetics, Wilmot Cancer Institute, University of Rochester Medical Center, Rochester, New York, United States of America
- Howard Hughes Medical Institute, Department of Oncological Sciences and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Jingtao Guo
- Howard Hughes Medical Institute, Department of Oncological Sciences and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Timothy G. Jenkins
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Emma R. James
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Department of Obstetrics and Gynecology, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - John R. Hoidal
- Department of Internal Medicine, University of Utah School of Medicine and Salt Lake VA Medical Center, Salt Lake City, Utah, United States of America
| | - Thomas Huecksteadt
- Department of Internal Medicine, University of Utah School of Medicine and Salt Lake VA Medical Center, Salt Lake City, Utah, United States of America
| | - Dallin S. Broberg
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - James M. Hotaling
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - David F. Alonso
- Department of Psychology, University of Utah, Salt Lake City, Utah, United States of America
| | - Douglas T. Carrell
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Department of Obstetrics and Gynecology, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
- Department of Genetics, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Bradley R. Cairns
- Howard Hughes Medical Institute, Department of Oncological Sciences and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Kenneth I. Aston
- Andrology and IVF Laboratories, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
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ROS-induced oxidative damage in lymphocytes ex vivo/in vitro from healthy individuals and MGUS patients: protection by myricetin bulk and nanoforms. Arch Toxicol 2020; 94:1229-1239. [PMID: 32107588 PMCID: PMC7225194 DOI: 10.1007/s00204-020-02688-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 02/21/2020] [Indexed: 01/01/2023]
Abstract
We investigated the protective role of myricetin bulk and nanoforms, against reactive oxygen species (ROS)-induced oxidative stress caused by hydrogen peroxide and tertiary-butyl hydro peroxide in lymphocytes in vitro from healthy individuals and those from pre-cancerous patients suffering with monoclonal gammopathy of undetermined significance (MGUS). The change in intracellular reactive oxygen species was measured once cells were treated with myricetin bulk forms and nanoforms with and without either hydrogen peroxide or tertiary-butyl hydro peroxide co-supplementation. The direct and indirect antioxidant activity of myricetin was spectrofluometrically measured using the fluorescent dye 2',7'-dichlorofluorescin diacetate and using the Comet assay, respectively. Hydrogen peroxide (50 µM) and tertiary-butyl hydro peroxide (300 µM) induced a higher level of reactive oxygen species-related DNA damage and strand breaks. Addition of myricetin nanoform (20 µM) and bulk (10 µM) form could, however, significantly prevent hydrogen peroxide- and tertiary-butyl hydro peroxide-induced oxidative imbalances and the nanoform was more effective. Glutathione levels were also quantified using a non-fluorescent dye. Results suggest that myricetin treatment had no significant effect on the cellular antioxidant enzyme, glutathione. The current study also investigates the effect of myricetin on the induction of double-strand breaks by staining the gamma-H2AX foci immunocytochemically. It was observed that myricetin does not induce double-strand breaks at basal levels rather demonstrated a protective effect.
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18
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Intolerance of loud sounds in childhood: Is there an intergenerational association with grandmaternal smoking in pregnancy? PLoS One 2020; 15:e0229323. [PMID: 32092095 PMCID: PMC7039668 DOI: 10.1371/journal.pone.0229323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 02/04/2020] [Indexed: 01/08/2023] Open
Abstract
Recent research using the Avon Longitudinal Study of Parents and Children (ALSPAC) demonstrated an association between maternal grandmother smoking in pregnancy and the autistic traits of impaired social communication and repetitive behaviour in granddaughters but not grandsons, but of paternal grandmother smoking and early development of myopia in the grandchild. Here we investigate whether grandmaternal smoking in pregnancy is associated with intolerance to loud sounds. ALSPAC collected information during the index pregnancy from the study parents on the smoking habits, social and other features of their own parents. Maternal report when the child was aged 6 and 13 included hating loud sounds; at age 11 the child was tested for volume preference for listening to music through headphones. Statistical analysis compared results for grandchildren in relation to whether a parent had been exposed in utero to maternal smoking, adjusted for their grandparents’ social and demographic attributes. We hypothesised that there would be sex differences in the effects of grandmaternal prenatal smoking, based on previous intergenerational studies. For 6-year-old children maternal report of intolerance to loud noise was more likely in grandsons if the maternal grandmother had smoked [adjusted odds ratio (AOR) 1.27; 95% confidence interval (CI) 1.03,1.56; P = 0.025], but less likely in girls [AOR 0.82; 95%CI 0.63,1.07] Pinteraction <0.05. If the paternal grandmother had smoked the grandchildren were less likely to be intolerant, especially girls. The objective measure of choice of volume for music through headphones showed that grandsons of both maternal and paternal smoking grandmothers were less likely to choose high volumes compared with granddaughters (P<0.05). In line with our prior hypothesis of sex differences, we showed that grandsons were more intolerant of loud sounds than granddaughters particularly at age 6, and this was confirmed by objective measures at age 11.
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19
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Godschalk RWL, Yauk CL, van Benthem J, Douglas GR, Marchetti F. In utero Exposure to Genotoxicants Leading to Genetic Mosaicism: An Overlooked Window of Susceptibility in Genetic Toxicology Testing? ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2020; 61:55-65. [PMID: 31743493 PMCID: PMC6973016 DOI: 10.1002/em.22347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 05/08/2023]
Abstract
In utero development represents a sensitive window for the induction of mutations. These mutations may subsequently expand clonally to populate entire organs or anatomical structures. Although not all adverse mutations will affect tissue structure or function, there is growing evidence that clonally expanded genetic mosaics contribute to various monogenic and complex diseases, including cancer. We posit that genetic mosaicism is an underestimated potential health problem that is not fully addressed in the current regulatory genotoxicity testing paradigm. Genotoxicity testing focuses exclusively on adult exposures and thus may not capture the complexity of genetic mosaicisms that contribute to human disease. Numerous studies have shown that conversion of genetic damage into mutations during early developmental exposures can result in much higher mutation burdens than equivalent exposures in adults in certain tissues. Therefore, we assert that analysis of genetic effects caused by in utero exposures should be considered in the current regulatory testing paradigm, which is possible by harmonization with current reproductive/developmental toxicology testing strategies. This is particularly important given the recent proposed paradigm change from simple hazard identification to quantitative mutagenicity assessment. Recent developments in sequencing technologies offer practical tools to detect mutations in any tissue or species. In addition to mutation frequency and spectrum, these technologies offer the opportunity to characterize the extent of genetic mosaicism following exposure to mutagens. Such integration of new methods with existing toxicology guideline studies offers the genetic toxicology community a way to modernize their testing paradigm and to improve risk assessment for vulnerable populations. Environ. Mol. Mutagen. 61:55-65, 2020. © 2019 The Authors. Environmental and Molecular Mutagenesis published by Wiley Periodicals, Inc. on behalf of Environmental Mutagen Society.
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Affiliation(s)
- Roger W. L. Godschalk
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM)Maastricht UniversityMaastrichtThe Netherlands
| | - Carole L. Yauk
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
| | - Jan van Benthem
- Center for Health ProtectionNational Institute for Public Health and the Environment (RIVM)BilthovenThe Netherlands
| | - George R. Douglas
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
| | - Francesco Marchetti
- Mechanistic Studies DivisionEnvironmental Health Science and Research Bureau, Health CanadaOttawaK1A 0K9OntarioCanada
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20
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Multicolor Laser Scanning Confocal Immunofluorescence Microscopy of DNA Damage Response Biomarkers. Methods Mol Biol 2019. [PMID: 31473966 DOI: 10.1007/978-1-4939-9646-9_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
DNA damage through endogenous and environmental toxicants is a constant threat to both a human's ability to pass on intact genetic information to its offspring as well as in somatic cells for its own survival. To counter these threats posed by DNA damage, cells have evolved a series of highly choreographed mechanisms-collectively defined as the DNA-damage response (DDR)-to sense DNA lesions, signal their presence, and mediate their repair. Thus, regular DDR signaling cascades are vital to prevent the initiation and progression of many human diseases including cancer. Consequently, quantitative assessment of DNA damage and response became an important biomarker for assessment of human health and disease risk in biomonitoring studies. However, most quantitative DNA damage biomarker techniques require dissolution of the nuclear architecture and hence loss of spatial information. Laser scanning confocal immunofluorescence microscopy (LSCIM) of three-dimensionally preserved nuclei can be, quantitative and maintain the spatial information. Here we describe the experimental protocols to quantify individual key events of the DDR cascade in three-dimensionally preserved nuclei by LSCIM with high resolution, using the simultaneous detection of Rad50 as well as phosphorylated H2AX and ATM and in somatic and germ cells as an example.
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21
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Golding J, Gregory S, Northstone K, Iles-Caven Y, Ellis G, Pembrey M. Investigating Possible Trans/Intergenerational Associations With Obesity in Young Adults Using an Exposome Approach. Front Genet 2019; 10:314. [PMID: 31024624 PMCID: PMC6459952 DOI: 10.3389/fgene.2019.00314] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 03/21/2019] [Indexed: 11/13/2022] Open
Abstract
Animal experiments demonstrate ways in which an exposure in one generation can be reflected in a variety of outcomes in later generations. In parallel human observational studies have shown associations between grandparental and parental exposures to cigarette smoking and/or nutrition and growth and survival of the grandchild. These studies have controlled for just a few confounders selected ad hoc. Here we use an exposome approach (using all available measures of exposure) to determine trans/inter-generational factors that may be important in studying environmental factors associated with fat mass in young human adults. The study takes advantage of the rich data available in the Avon Longitudinal Study of Parents and Children (ALSPAC). We test associations with features of grandparents (G0) and the childhood of the parents (G1) of 24-year olds (G2). We hypothesized that intergenerational associations would be revealed, particularly with exposure to cigarette smoke, and that these would vary with the sexes of all three generations. The study exposome analyzed 172 exposures to the maternal line and 182 to the paternal line. A series of stepwise regression analyses reduced the initial 40 unadjusted factors (P < 0.05) to eight independent features on the maternal line, and of 26 on the paternal line to five. We found strong associations between the father starting to smoke cigarettes regularly before age 11 and increased fat mass in his adult children (unadjusted = +7.82 [95% CI +2.75, +12.90] Kg; adjusted = +11.22 [+5.23, +17.22] Kg); this association was stronger in male offspring. In addition, when the paternal grandmother had smoked in pregnancy her adult granddaughters, but not grandsons had elevated mean fat mass (interaction with sex after adjustment, P = 0.001). The exposome technique identified other factors that were independently associated with fat mass in young adults. These may be useful in identifying appropriate confounders in other more proximal analyses, but also may identify features that may be on epigenetic pathways leading to increased fat mass in subsequent generations. We acknowledge that the results need to be replicated in other cohorts and encourage further linkage of outcomes with previous generational exposures, particularly along the paternal line.
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Affiliation(s)
- Jean Golding
- Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
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22
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Godschalk R, Remels A, Hoogendoorn C, van Benthem J, Luijten M, Duale N, Brunborg G, Olsen AK, Bouwman FG, Munnia A, Peluso M, Mariman E, van Schooten FJ. Paternal Exposure to Environmental Chemical Stress Affects Male Offspring's Hepatic Mitochondria. Toxicol Sci 2019; 162:241-250. [PMID: 29145655 DOI: 10.1093/toxsci/kfx246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Preconceptional paternal exposures may affect offspring's health, which cannot be explained by mutations in germ cells, but by persistent changes in the regulation of gene expression. Therefore, we investigated whether pre-conceptional paternal exposure to benzo[a]pyrene (B[a]P) could alter the offspring's phenotype. Male C57BL/6 mice were exposed to B[a]P by gavage for 6 weeks, 3× per week, and were crossed with unexposed BALB-c females 6 weeks after the final exposure. The offspring was kept under normal feeding conditions and was sacrificed at 3 weeks of age. Analysis of the liver proteome by 2D-gel electrophoresis and mass spectrometry indicated that proteins involved in mitochondrial function were significantly downregulated in the offspring of exposed fathers. This down-regulation of mitochondrial proteins was paralleled by a reduction in mitochondrial DNA copy number and reduced activity of citrate synthase and β-hydroxyacyl-CoA dehydrogenase, but in male offspring only. Surprisingly, analysis of hepatic mRNA expression revealed a male-specific up-regulation of the genes, whose proteins were downregulated, including Aldh2 and Ogg1. This discrepancy could be related to several selected microRNA (miRNA)'s that regulate the translation of these proteins; miRNA-122, miRNA-129-2-5p, and miRNA-1941 were upregulated in a gender-specific manner. Since mitochondria are thought to be a source of intracellular reactive oxygen species, we additionally assessed oxidatively-induced DNA damage. Both 8-hydroxy-deoxyguanosine and malondialdehyde-dG adduct levels were significantly reduced in male offspring of exposed fathers. In conclusion, we show that paternal exposure to B[a]P can regulate mitochondrial metabolism in offspring, which may have profound implications for our understanding of health and disease risk inherited from fathers.
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Affiliation(s)
- Roger Godschalk
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Alex Remels
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Camiel Hoogendoorn
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
| | - Jan van Benthem
- Laboratory for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Mirjam Luijten
- Laboratory for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Nur Duale
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Gunnar Brunborg
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Ann-Karin Olsen
- Department of Molecular Biology, Norwegian Institute of Public Health, Nydalen, Oslo, Norway
| | - Freek G Bouwman
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Armelle Munnia
- Cancer Risk Factor Branch, Cancer Prevention Laboratory, ISPO-Cancer Prevention and Research Institute, Florence, Italy
| | - Marco Peluso
- Cancer Risk Factor Branch, Cancer Prevention Laboratory, ISPO-Cancer Prevention and Research Institute, Florence, Italy
| | - Edwin Mariman
- Department of Human Biology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Frederik Jan van Schooten
- Department of Pharmacology & Toxicology, NUTRIM, School for Nutrition and Translational Research in Metabolism, Maastricht University, 6200MD Maastricht, The Netherlands
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23
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Abstract
Human biomonitoring studies aim to identify potential exposures to environmental, occupational, or lifestyle toxicants in human populations and are commonly used by public health decision makers to predict disease risk. The Comet assay measures changes in genomic stability and is one of the most reliable biomarkers to indicate early biological effects and therefore accepted by various governmental regulatory agencies. The appeal of the Comet assay lies in its relative simplicity, rapidity, sensitivity, and economic efficiency. Furthermore, the assay is known for its broad versatility, as it can be applied to virtually any human cell and easily adapted in order to detect particular biomarkers of interest, such as DNA repair capacity or single and double-strand breaks. In a standard experiment, isolated single cells are first embedded in agarose, and then lysed in high-salt solutions in order to remove all cellular contents except the DNA attached to a nuclear scaffold. Subsequent electrophoresis results in accumulation of undamaged DNA sequences at the proximity of the nuclear scaffold, while damaged sequences migrate toward the anode. When visualized with fluorochromes, these migrated DNA fragments resemble a Comet tail and can be quantified for their intensity and shape according to internationally drafted guidelines.
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Affiliation(s)
- Diana Anderson
- Faculty of Life Sciences, University of Bradford, Bradford, UK.
| | - Alok Dhawan
- Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
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24
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Axelsson J, Sabra S, Rylander L, Rignell-Hydbom A, Lindh CH, Giwercman A. Association between paternal smoking at the time of pregnancy and the semen quality in sons. PLoS One 2018; 13:e0207221. [PMID: 30462692 PMCID: PMC6248964 DOI: 10.1371/journal.pone.0207221] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 10/26/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Maternal smoking during pregnancy has repeatedly been associated with decreased sperm counts in sons. Nevertheless, our team recently detected a lower total sperm count in the sons of smoking fathers as compared to sons of non-smoking fathers. Since paternal and maternal tobacco smoking often coincide, it is difficult to discriminate whether effects are mediated paternally or maternally when using questionnaire- or register-based studies. Therefore, getting an objective measure of the maternal nicotine exposure level during pregnancy might help disentangling the impact of paternally and maternally derived exposure. OBJECTIVES Our aim was to study how paternal smoking at the time of the pregnancy was associated with semen quality in the sons after adjusting for the maternal levels of nicotine exposure during pregnancy. METHODS We recruited 104 men (17-20 years old) from the general Swedish population. The participants answered a questionnaire about paternal smoking. Associations between smoking and semen volume, total sperm count, sperm concentration, morphology and motility were adjusted for levels of the nicotine metabolite cotinine in stored maternal serum samples obtained from rubella screening between the 6th and 35th week of pregnancy. We additionally adjusted for the estimated socioeconomic status. RESULTS After adjusting for the maternal cotinine, the men of smoking fathers had 41% lower sperm concentration and 51% lower total sperm count than the men of non-smoking fathers (p = 0.02 and 0.003, respectively). This was robust to the additional adjustment. CONCLUSIONS Our results suggest a negative association between paternal smoking and sperm counts in the sons, independent of the level maternal nicotine exposure during the pregnancy.
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Affiliation(s)
- Jonatan Axelsson
- Molecular Reproductive Medicine, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
- Occupational and Environmental Medicine, Laboratory Medicine, Faculty of Medicine, Lund University, Lund, Sweden
| | - Sally Sabra
- Occupational and Environmental Medicine, Laboratory Medicine, Faculty of Medicine, Lund University, Lund, Sweden
| | - Lars Rylander
- Occupational and Environmental Medicine, Laboratory Medicine, Faculty of Medicine, Lund University, Lund, Sweden
| | - Anna Rignell-Hydbom
- Occupational and Environmental Medicine, Laboratory Medicine, Faculty of Medicine, Lund University, Lund, Sweden
| | - Christian H. Lindh
- Occupational and Environmental Medicine, Laboratory Medicine, Faculty of Medicine, Lund University, Lund, Sweden
| | - Aleksander Giwercman
- Molecular Reproductive Medicine, Department of Translational Medicine, Faculty of Medicine, Lund University, Malmö, Sweden
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25
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Patton GC, Olsson CA, Skirbekk V, Saffery R, Wlodek ME, Azzopardi PS, Stonawski M, Rasmussen B, Spry E, Francis K, Bhutta ZA, Kassebaum NJ, Mokdad AH, Murray CJL, Prentice AM, Reavley N, Sheehan P, Sweeny K, Viner RM, Sawyer SM. Adolescence and the next generation. Nature 2018; 554:458-466. [PMID: 29469095 DOI: 10.1038/nature25759] [Citation(s) in RCA: 192] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/18/2018] [Indexed: 12/30/2022]
Abstract
Adolescent growth and social development shape the early development of offspring from preconception through to the post-partum period through distinct processes in males and females. At a time of great change in the forces shaping adolescence, including the timing of parenthood, investments in today's adolescents, the largest cohort in human history, will yield great dividends for future generations.
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Affiliation(s)
- George C Patton
- The University of Melbourne, Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, Parkville, Victoria 3010, Australia.,Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Centre for Adolescent Health, Royal Children's Hospital, Parkville, Victoria 3052, Australia
| | - Craig A Olsson
- The University of Melbourne, Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, Parkville, Victoria 3010, Australia.,Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Centre for Adolescent Health, Royal Children's Hospital, Parkville, Victoria 3052, Australia.,Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Victoria 3220, Australia
| | - Vegard Skirbekk
- Centre for Fertility and Health, Norwegian Institute of Public Health, Nydalen, Oslo 0403, Norway.,Columbia University, New York, New York 10032, USA
| | - Richard Saffery
- The University of Melbourne, Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, Parkville, Victoria 3010, Australia.,Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia
| | - Mary E Wlodek
- The University of Melbourne, Department of Physiology, Parkville, Victoria 3010, Australia
| | - Peter S Azzopardi
- The University of Melbourne, Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, Parkville, Victoria 3010, Australia.,Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Maternal and Child Health Program, International Development Discipline, Burnet Institute, Melbourne, Victoria 3004, Australia.,Wardliparingga Aboriginal Research Unit, South Australian Health and Medical Research Institute, Adelaide, South Australia 5000, Australia
| | - Marcin Stonawski
- Department of Demography, Cracow University of Economics, Cracow 31-510, Poland.,European Commission, Joint Research Centre, Centre for Advanced Studies, Ispra, Varese 21027, Italy
| | - Bruce Rasmussen
- Victoria Institute of Strategic Economic Studies, Victoria University, Melbourne, Victoria 3000, Australia
| | - Elizabeth Spry
- Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Centre for Adolescent Health, Royal Children's Hospital, Parkville, Victoria 3052, Australia.,Deakin University Geelong, Centre for Social and Early Emotional Development, School of Psychology, Faculty of Health, Geelong, Victoria 3220, Australia
| | - Kate Francis
- Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Centre for Adolescent Health, Royal Children's Hospital, Parkville, Victoria 3052, Australia
| | - Zulfiqar A Bhutta
- SickKids Centre for Global Child Health, Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.,Centre of Excellence in Women and Child Health, Aga Khan University, Karachi 74800, Pakistan
| | - Nicholas J Kassebaum
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington 98121, USA.,Division of Pediatric Anesthesiology & Pain Medicine, Seattle Children's Hospital, Seattle, Washington 98105, USA
| | - Ali H Mokdad
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington 98121, USA
| | - Christopher J L Murray
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington 98121, USA
| | - Andrew M Prentice
- MRC Unit The Gambia, Fajara, Gambia.,MRC International Nutrition Group, London School of Hygiene & Tropical Medicine, London WC1E 7HT, UK
| | - Nicola Reavley
- The University of Melbourne, Melbourne School of Population and Global Health, Parkville, Victoria 3010, Australia
| | - Peter Sheehan
- Victoria Institute of Strategic Economic Studies, Victoria University, Melbourne, Victoria 3000, Australia
| | - Kim Sweeny
- Victoria Institute of Strategic Economic Studies, Victoria University, Melbourne, Victoria 3000, Australia
| | - Russell M Viner
- UCL Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Susan M Sawyer
- The University of Melbourne, Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, Parkville, Victoria 3010, Australia.,Murdoch Children's Research Institute, Parkville, Victoria 3052, Australia.,Centre for Adolescent Health, Royal Children's Hospital, Parkville, Victoria 3052, Australia
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26
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Ren J, Cheng Y, Ming ZH, Dong XY, Zhou YZ, Ding GL, Pang HY, Rahman TU, Akbar R, Huang HF, Sheng JZ. Intrauterine hyperglycemia exposure results in intergenerational inheritance via DNA methylation reprogramming on F1 PGCs. Epigenetics Chromatin 2018; 11:20. [PMID: 29801514 PMCID: PMC5968593 DOI: 10.1186/s13072-018-0192-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 05/21/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The existing reports about intergenerational or transgenerational effects of intrauterine hyperglycemia have included both intrauterine and postnatal metabolic exposure factors, while the impact of intrauterine hyperglycemia per se has not been assessed alone. A number of studies suggest DNA methylation reprogramming of gametes plays a crucial role in the metabolic inheritance, but it is unclear when and how DNA methylation patterns are altered when exposed to intrauterine hyperglycemia. In this study, we selected nondiabetic F1- and F2-gestational diabetes mellitus (GDM) male mice as founders to examine metabolic changes in the next generation and performed methylome sequencing of day 13.5 primordial germ cells (PGCs) from F1-GDM to explore the underlying epigenetic mechanism. RESULTS We found that intrauterine hyperglycemia exposure resulted in obesity, insulin resistance, and/or glucose intolerance in F2 male mice, but no metabolic changes in F3 male mice at 8 weeks. Using reduced representation bisulfite sequencing, we found DNA methylome of day 13.5 PGCs from F1-GDM fetuses revealed differently methylated genes enriched in obesity and diabetes. Methylation validation of the insulin resistance and fat accumulation gene Fyn showed a consistent hypomethylation status in F1 PGCs, F1 fetal testes, sperm from F1/C-GDM mice, and somatic cells from F2-GDM male mice. In contrast, no methylation alteration was observed in F2-GDM male germ cells and F3-GDM somatic cells. CONCLUSION We provide evidence that intrauterine hyperglycemia exposure per se contributes to intergenerational metabolic changes in the F2 but not F3 generation. And the aberrant DNA methylation reprogramming occurs as early as day 13.5 in PGCs of the F1 generation. Our findings suggest that intrauterine exposure alone is sufficient to cause the epigenetic inheritance in F2 offspring, and the epigenetic memory carried by DNA methylation pattern could be erased by the second wave of methylation reprogramming in F2 PGCs during fetal development.
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Affiliation(s)
- Jun Ren
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Yi Cheng
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Zhen-Hua Ming
- The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China.,Department of Reproductive Endocrinology, Zhejiang Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xin-Yan Dong
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Yu-Zhong Zhou
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Guo-Lian Ding
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Hai-Yan Pang
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Tanzil Ur Rahman
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - Rubab Akbar
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China
| | - He-Feng Huang
- The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China. .,The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Jian-Zhong Sheng
- Department of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China. .,The Key Laboratory of Reproductive Genetics (Zhejiang University), Ministry of Education, Hangzhou, China.
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27
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Svanes C, Koplin J, Skulstad SM, Johannessen A, Bertelsen RJ, Benediktsdottir B, Bråbäck L, Elie Carsin A, Dharmage S, Dratva J, Forsberg B, Gislason T, Heinrich J, Holm M, Janson C, Jarvis D, Jögi R, Krauss-Etschmann S, Lindberg E, Macsali F, Malinovschi A, Modig L, Norbäck D, Omenaas E, Waatevik Saure E, Sigsgaard T, Skorge TD, Svanes Ø, Torén K, Torres C, Schlünssen V, Gomez Real F. Father's environment before conception and asthma risk in his children: a multi-generation analysis of the Respiratory Health In Northern Europe study. Int J Epidemiol 2018; 46:235-245. [PMID: 27565179 DOI: 10.1093/ije/dyw151] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2016] [Indexed: 01/04/2023] Open
Abstract
Background Whereas it is generally accepted that maternal environment plays a key role in child health, emerging evidence suggests that paternal environment before conception also impacts child health. We aimed to investigate the association between children's asthma risk and parental smoking and welding exposures prior to conception. Methods In a longitudinal, multi-country study, parents of 24 168 offspring aged 2-51 years provided information on their life-course smoking habits, occupational exposure to welding and metal fumes, and offspring's asthma before/after age 10 years and hay fever. Logistic regressions investigated the relevant associations controlled for age, study centre, parental characteristics (age, asthma, education) and clustering by family. Results Non-allergic early-onset asthma (asthma without hay fever, present in 5.8%) was more common in the offspring with fathers who smoked before conception {odds ratio [OR] = 1.68 [95% confidence interval (CI) = 1.18-2.41]}, whereas mothers' smoking before conception did not predict offspring asthma. The risk was highest if father started smoking before age 15 years [3.24 (1.67-6.27)], even if he stopped more than 5 years before conception [2.68 (1.17-6.13)]. Fathers' pre-conception welding was independently associated with non-allergic asthma in his offspring [1.80 (1.29-2.50)]. There was no effect if the father started welding or smoking after birth. The associations were consistent across countries. Conclusions Environmental exposures in young men appear to influence the respiratory health of their offspring born many years later. Influences during susceptible stages of spermatocyte development might be important and needs further investigation in humans. We hypothesize that protecting young men from harmful exposures may lead to improved respiratory health in future generations.
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Affiliation(s)
- Cecilie Svanes
- Centre for International Health, University of Bergen, Norway.,Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway.,Department of Clinical Science, University of Bergen, Norway
| | - Jennifer Koplin
- Centre for International Health, University of Bergen, Norway.,School of Population and Global Health, University of Melbourne, Australia.,Murdoch Childrens Research Institute, Melbourne, Australia
| | - Svein Magne Skulstad
- Department of Clinical Science, University of Bergen, Norway.,Department of Obstetrics, Oslo University Hospital, Rikshospitalet, Oslo, Norway
| | - Ane Johannessen
- Department of Clinical Science, University of Bergen, Norway.,Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
| | - Randi Jakobsen Bertelsen
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway.,Department of Clinical Science, University of Bergen, Norway
| | - Byndis Benediktsdottir
- Department of Allergy, Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland.,University of Iceland, Medical Faculty
| | - Lennart Bråbäck
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Sweden
| | - Anne Elie Carsin
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - Shyamali Dharmage
- Department of Clinical Science, University of Bergen, Norway.,School of Population and Global Health, University of Melbourne, Australia
| | - Julia Dratva
- Centre for International Health, University of Bergen, Norway.,Department of Epidemiology and Public Health, Gender & Health, Swiss Tropical and Public Health Institute, Basel University, Switzerland
| | - Bertil Forsberg
- Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Sweden
| | - Thorarinn Gislason
- Department of Allergy, Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland.,University of Iceland, Medical Faculty
| | | | - Mathias Holm
- Occupational and Environmental Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden
| | | | - Deborah Jarvis
- Faculty of Medicine, National Heart & Lung Institute, Imperial College, London, UK
| | - Rain Jögi
- Lung Clinic, Foundation Tartu University Clinics, Tartu, Estonia.,Department of Pulmonary Medicine, Tartu University, Estonia
| | - Susanne Krauss-Etschmann
- Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Divison of Experimental Asthma Research, University of Kiel, Germany
| | - Eva Lindberg
- Department of Medical Sciences, Uppsala University, Sweden
| | - Ferenc Macsali
- Department of Obstetrics and Gynecology, Haukeland, University Hospital, Bergen, Norway
| | | | - Lars Modig
- Centre for International Health, University of Bergen, Norway.,Occupational and Environmental Medicine, Department of Public Health and Clinical Medicine, Umeå University, Sweden
| | - Dan Norbäck
- Department of Medical Sciences, Uppsala University, Sweden
| | - Ernst Omenaas
- Department of Clinical Science, University of Bergen, Norway.,Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
| | | | | | - Trude Duelien Skorge
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - Øistein Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway.,Department of Clinical Science, University of Bergen, Norway
| | - Kjell Torén
- Occupational and Environmental Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden
| | - Carl Torres
- Department of Clinical Science, University of Bergen, Norway
| | | | - Francisco Gomez Real
- Department of Clinical Science, University of Bergen, Norway.,Department of Obstetrics and Gynecology, Haukeland, University Hospital, Bergen, Norway
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28
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Albers L, Sobotzki C, Kuß O, Ajslev T, Batista RF, Bettiol H, Brabin B, Buka SL, Cardoso VC, Clifton VL, Devereux G, Gilman SE, Grzeskowiak LE, Heinrich J, Hummel S, Jacobsen GW, Jones G, Koshy G, Morgen CS, Oken E, Paus T, Pausova Z, Rifas-Shiman SL, Sharma AJ, da Silva AA, Sørensen TI, Thiering E, Turner S, Vik T, von Kries R. Maternal smoking during pregnancy and offspring overweight: is there a dose-response relationship? An individual patient data meta-analysis. Int J Obes (Lond) 2018; 42:1249-1264. [PMID: 29717267 DOI: 10.1038/s41366-018-0050-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 11/13/2017] [Accepted: 12/27/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND/OBJECTIVES A number of meta-analyses suggest an association between any maternal smoking in pregnancy and offspring overweight obesity. Whether there is a dose-response relationship across number of cigarettes and whether this differs by sex remains unclear. SUBJECT/METHODS Studies reporting number of cigarettes smoked during pregnancy and offspring BMI published up to May 2015 were searched. An individual patient data meta-analysis of association between the number of cigarettes smoked during pregnancy and offspring overweight (defined according to the International Obesity Task Force reference) was computed using a generalized additive mixed model with non-linear effects and adjustment for confounders (maternal weight status, breastfeeding, and maternal education) and stratification for sex. RESULTS Of 26 identified studies, 16 authors provided data on a total of 238,340 mother-child-pairs. A linear positive association was observed between the number of cigarettes smoked and offspring overweight for up to 15 cigarettes per day with an OR increase per cigarette of 1.03, 95% CI = [1.02-1.03]. The OR flattened with higher cigarette use. Associations were similar in males and females. Sensitivity analyses supported these results. CONCLUSIONS A linear dose-response relationship of maternal smoking was observed in the range of 1-15 cigarettes per day equally in boys and girls with no further risk increase for doses above 15 cigarettes.
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Affiliation(s)
- Lucia Albers
- Division of Epidemiology, Institute of Social Paediatrics and Adolescents Medicine, Ludwig-Maximilians-University Munich, Munich, Germany.
| | - Christina Sobotzki
- Division of Epidemiology, Institute of Social Paediatrics and Adolescents Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Oliver Kuß
- German Diabetes Center, Institute of Biometrics and Epidemiology, Düsseldorf, 40225, Germany
| | - Teresa Ajslev
- Department of Clinical Epidemiology (formerly Institute of Preventive Medicine), Bispebjerg and Frederiksberg Hospitals, The Capital Region, Denmark
| | - Rosangela Fl Batista
- Departamento de Saúde Pública, Universidade Federal do Maranhão, São Luís, MA, Brazil
| | - Heloisa Bettiol
- Departamento de Puericultura e Pediatria, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Bernard Brabin
- Child and Reproductive Health Group, Liverpool School of Tropical Medicine, Liverpool, UK.,Department of Community Child Health,Royal Liverpool Children's Hospital, NHS Trust Alder Hey, Liverpool, UK.,Emma Kinderziekenhuis, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Stephen L Buka
- Department of Epidemiology, Brown University School of Public Health, Providence, Rhode Island, USA
| | - Viviane C Cardoso
- Departamento de Puericultura e Pediatria, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Vicki L Clifton
- Adelaide Medical School, The Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | | | - Stephen E Gilman
- Health Behavior Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.,Department of Social and Behavioral Sciences, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Luke E Grzeskowiak
- Adelaide Medical School, The Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Joachim Heinrich
- Institute of Occupational, Social, and Environmental Medicine, University Hospital, Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Occupational, Social, and Environmental Medicine, University Hospital, Neuherberg, Germany
| | - Sandra Hummel
- Forschergruppe Diabetes der Technischen Universität München, Munich, Germany.,Institut für Diabetesforschung der Forschergruppe Diabetes e.V. am Helmholtz Zentrum München, Munich, Germany
| | - Geir W Jacobsen
- Department of Public Health and General Practice, NTNU, Norwegian University of Science and Technology, Trondheim, Norway
| | - Graeme Jones
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Gibby Koshy
- Child and Reproductive Health Group, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Camilla Schmidt Morgen
- Department of Clinical Epidemiology (formerly Institute of Preventive Medicine), Bispebjerg and Frederiksberg Hospitals, The Capital Region, Denmark
| | - Emily Oken
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - Tomas Paus
- Rotman Research Institute and Departments of Psychology and Psychiatry, University of Toronto, Toronto, Canada
| | - Zdenka Pausova
- Hospital for Sick Children and Departments of Physiology and Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Sheryl L Rifas-Shiman
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | | | - Antônio Am da Silva
- Departamento de Saúde Pública, Universidade Federal do Maranhão, São Luís, MA, Brazil
| | - Thorkild Ia Sørensen
- Department of Clinical Epidemiology (formerly Institute of Preventive Medicine), Bispebjerg and Frederiksberg Hospitals, The Capital Region, Denmark.,Novo Nordisk Foundation Centre for Basic Metabolic Research, and Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Elisabeth Thiering
- Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Epidemiology I, Neuherberg, Germany
| | | | - Torstein Vik
- Department of Laboratory Medicine, Children and Women's Health, Norwegian University of Science and Technology, Trondheim, Norway
| | - Rüdiger von Kries
- Division of Epidemiology, Institute of Social Paediatrics and Adolescents Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
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29
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Soubry A. Epigenetics as a Driver of Developmental Origins of Health and Disease: Did We Forget the Fathers? Bioessays 2017; 40. [PMID: 29168895 DOI: 10.1002/bies.201700113] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/04/2017] [Indexed: 12/15/2022]
Abstract
What are the effects of our environment on human development and the next generation? Numerous studies have provided ample evidence that a healthy environment and lifestyle of the mother is important for her offspring. Biological mechanisms underlying these environmental influences have been proposed to involve alterations in the epigenome. Is there enough evidence to suggest a similar contribution from the part of the father? Animal models provide proof of a transgenerational epigenetic effect through the paternal germ line, but can this be translated to humans? To date, literature on fathers is scarce. Human studies do not always incorporate appropriate tools to evaluate paternal influences or epigenetic effects. In reviewing the literature, I stress the need to explore and recognize paternal contributions to offspring's health within the Developmental Origins of Health and Disease hypothesis, and coin this new concept the Paternal Origins of Health and Disease paradigm (POHaD). A better understanding of preconceptional origins of disease through the totality of paternal exposures, or the paternal exposome, will provide evidence-based public health recommendations for future fathers.
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Affiliation(s)
- Adelheid Soubry
- Epidemiology Research Group, Department of Public Health and Primary Care, Faculty of Medicine, KU Leuven - University of Leuven, Leuven, Belgium
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30
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Rumrich IK, Vähäkangas K, Viluksela M, Gissler M, Surcel HM, de Ruyter H, Jokinen J, Hänninen O. The MATEX cohort - a Finnish population register birth cohort to study health effects of prenatal exposures. BMC Public Health 2017; 17:871. [PMID: 29115964 PMCID: PMC5678812 DOI: 10.1186/s12889-017-4881-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 10/26/2017] [Indexed: 12/11/2022] Open
Abstract
Background The prevalence of chronic diseases, such as immune, neurobehavioral, and metabolic disorders has increased in recent decades. According to the concept of Developmental Origin of Health and Disease (DOHaD), developmental factors associated with environmental exposures and maternal lifestyle choices may partly explain the observed increase. Register-based epidemiology is a prime tool to investigate the effects of prenatal exposures over the whole life course. Our aim is to establish a Finnish register-based birth cohort, which can be used to investigate various (prenatal) exposures and their effects during the whole life course with first analyses focusing on maternal smoking and air pollution. In this paper we (i) review previous studies to identify knowledge gaps and overlaps available for cross-validation, (ii) lay out the MATEX study plan for register linkages, and (iii) analyse the study power of the baseline MATEX cohort for selected endpoints identified from the international literature. Methods/design The MATEX cohort is a fully register-based cohort identified from the Finnish Medical Birth Register (MBR) (1987–2015). Information from the MBR will be linked with other Finnish health registers and the population register to link the cohort with air quality data. Epidemiological analyses will be conducted for maternal smoking and air pollution and a range of health endpoints. Discussion The MATEX cohort consists of 1.75 million mother-child pairs with a maximum follow up time of 29 years. This makes the cohort big enough to reach sufficient statistical power to investigate rare outcomes, such as birth anomalies, childhood cancers, and sudden infant death syndrome (SIDS). The linkage between different registers allows for an extension of the scope of the cohort and a follow up from the prenatal period to decades later in life. Electronic supplementary material The online version of this article (10.1186/s12889-017-4881-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Isabell K Rumrich
- Department of Environmental and Biological Sciences, University of Eastern Finland (UEF), Kuopio, Finland. .,Department of Public Health Solutions, National Institute for Health and Welfare (THL), Kuopio, Finland.
| | - Kirsi Vähäkangas
- University of Eastern Finland (UEF), School of Pharmacy/Toxicology, Kuopio, Finland
| | - Matti Viluksela
- Department of Environmental and Biological Sciences, University of Eastern Finland (UEF), Kuopio, Finland.,Department of Public Health Solutions, National Institute for Health and Welfare (THL), Kuopio, Finland
| | - Mika Gissler
- Department of Information Services, National Institute for Health and Welfare, Helsinki, Finland
| | - Heljä-Marja Surcel
- Department of Welfare, National Institute for Health and Welfare, Oulu, Finland
| | | | - Jukka Jokinen
- Department of Public Health Solutions, National Institute for Health and Welfare (THL), Kuopio, Finland
| | - Otto Hänninen
- Department of Public Health Solutions, National Institute for Health and Welfare (THL), Kuopio, Finland
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31
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Christensen P, Humaidan P. Testing of sperm DNA damage and clinical recommendations. Transl Androl Urol 2017; 6:S607-S609. [PMID: 29082187 PMCID: PMC5643640 DOI: 10.21037/tau.2017.03.34] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
| | - Peter Humaidan
- The Fertility Clinic, Skive Regional Hospital, Skive, Denmark.,Faculty of Health, Aarhus University, Aarhus, Denmark
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32
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Abstract
Early - intrauterine - environmental factors are linked to the development of cardiovascular disease in later life. Traditionally, these factors are considered to be maternal factors such as maternal under and overnutrition, exposure to toxins, lack of micronutrients, and stress during pregnancy. However, in the recent years, it became obvious that also paternal environmental factors before conception and during sperm development determine the health of the offspring in later life. We will first describe clinical observational studies providing evidence for paternal programming of adulthood diseases in progeny. Next, we describe key animal studies proving this relationship, followed by a detailed analysis of our current understanding of the underlying molecular mechanisms of paternal programming. Alterations of noncoding sperm micro-RNAs, histone acetylation, and targeted as well as global DNA methylation seem to be in particular involved in paternal programming of offspring's diseases in later life.
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33
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Beal MA, Yauk CL, Marchetti F. From sperm to offspring: Assessing the heritable genetic consequences of paternal smoking and potential public health impacts. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2017; 773:26-50. [PMID: 28927533 DOI: 10.1016/j.mrrev.2017.04.001] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/05/2017] [Accepted: 04/07/2017] [Indexed: 12/16/2022]
Abstract
Individuals who smoke generally do so with the knowledge of potential consequences to their own health. What is rarely considered are the effects of smoking on their future children. The objective of this work was to review the scientific literature on the effects of paternal smoking on sperm and assess the consequences to offspring. A literature search identified over 200 studies with relevant data in humans and animal models. The available data were reviewed to assess the weight of evidence that tobacco smoke is a human germ cell mutagen and estimate effect sizes. These results were used to model the potential increase in genetic disease burden in offspring caused by paternal smoking, with specific focus on aneuploid syndromes and intellectual disability, and the socioeconomic impacts of such an effect. The review revealed strong evidence that tobacco smoking is associated with impaired male fertility, and increases in DNA damage, aneuploidies, and mutations in sperm. Studies support that these effects are heritable and adversely impact the offspring. Our model estimates that, with even a modest 25% increase in sperm mutation frequency caused by smoke-exposure, for each generation across the global population there will be millions of smoking-induced de novo mutations transmitted from fathers to offspring. Furthermore, paternal smoking is estimated to contribute to 1.3 million extra cases of aneuploid pregnancies per generation. Thus, the available evidence makes a compelling case that tobacco smoke is a human germ cell mutagen with serious public health and socio-economic implications. Increased public education should be encouraged to promote abstinence from smoking, well in advance of reproduction, to minimize the transmission of harmful mutations to the next-generation.
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Affiliation(s)
- Marc A Beal
- Carleton University, Ottawa, Ontario K1S 5B6, Canada; Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Carole L Yauk
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario K1A 0K9, Canada
| | - Francesco Marchetti
- Environmental Health Science and Research Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Ontario K1A 0K9, Canada.
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34
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Grand-maternal smoking in pregnancy and grandchild's autistic traits and diagnosed autism. Sci Rep 2017; 7:46179. [PMID: 28448061 PMCID: PMC5407180 DOI: 10.1038/srep46179] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/10/2017] [Indexed: 12/31/2022] Open
Abstract
Although there is considerable research into the genetic background of autism spectrum disorders, environmental factors are likely to contribute to the variation in prevalence over time. Rodent experiments indicate that environmental exposures can have effects on subsequent generations, and human studies indicate that parental prenatal exposures may play a part in developmental variation. Here we use the Avon Longitudinal Study of Parents and Children (ALSPAC) to test the hypothesis that if the mother or father (F1) had been exposed to their own mother’s (F0) smoking during pregnancy, the offspring (F2) would be at increased risk of autism. We find an association between maternal grandmother smoking in pregnancy and grand daughters having adverse scores in Social Communication and Repetitive Behaviour measures that are independently predictive of diagnosed autism. In line with this, we show an association with actual diagnosis of autism in her grandchildren. Paternal grandmothers smoking in pregnancy showed no associations.
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35
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Menon R, Behnia F, Polettini J, Saade GR, Campisi J, Velarde M. Placental membrane aging and HMGB1 signaling associated with human parturition. Aging (Albany NY) 2016; 8:216-30. [PMID: 26851389 PMCID: PMC4789578 DOI: 10.18632/aging.100891] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Aging is associated with the onset of several diseases in various organ systems; however, different tissues may age differently, rendering some of them dysfunctional sooner than others. Placental membranes (fetal amniochorionic membranes) protect the fetus throughout pregnancy, but their longevity is limited to the duration of pregnancy. The age-associated dysfunction of these membranes is postulated to trigger parturition. Here, we investigated whether cellular senescence-the loss of cell division potential as a consequence of stress-is involved in placental membrane function at term. We show telomere reduction, p38 MAPK activation, increase in p21 expression, loss of lamin B1 loss, increase in SA-β-galactosidase , and senescence-associated secretory phenotype (SASP) gene expression in placental membranes after labor and delivery (term labor [TL]) compared to membranes prior to labor at term (term, not-in-labor [TNIL]). Exposing TNIL placental membranes to cigarette smoke extract, an oxidative stress inducer, also induced markers of cellular senescence similar to those in TL placental membranes. Bioinformatics analysis of differentially expressed SASP genes revealed HMGB1 signaling among the top pathways involved in labor. Further, we show that recombinant HMGB1 upregulates the expression of genes associated with parturition in myometrial cells. These data suggest that the natural physiologic aging of placental tissues is associated with cellular senescence and human parturition.
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Affiliation(s)
- Ramkumar Menon
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX 77555-1062, USA
| | - Faranak Behnia
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX 77555-1062, USA
| | - Jossimara Polettini
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX 77555-1062, USA
| | - George R Saade
- Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX 77555-1062, USA
| | - Judith Campisi
- Buck Institute for Research on Aging, Novato, CA 94945, USA.,Department of Cell and Molecular Biology, Lawrence Berkley National Laboratory, Berkeley, CA 94720, USA
| | - Michael Velarde
- Buck Institute for Research on Aging, Novato, CA 94945, USA.,Institute of Biology, University of Philippines, Diliman, 1101 Quezon City, Philippines
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36
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Oboni JB, Marques-Vidal P, Bastardot F, Vollenweider P, Waeber G. Impact of smoking on fertility and age of menopause: a population-based assessment. BMJ Open 2016; 6:e012015. [PMID: 27864244 PMCID: PMC5128850 DOI: 10.1136/bmjopen-2016-012015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND AND AIMS Studies in patients seeking medically assisted reproduction have shown that smoking reduces fertility, but little information is available in the general population. We assessed the associations between smoking and the number of children, childbearing planning and age at menopause in a representative sample of the population of Lausanne, Switzerland. METHODS Data from 6711 participants (3530 women, age range 35-75 years) collected between 2003 and 2006 and again in 2009 and 2012. Smoking status, number of offsprings and age of menopause were assessed. RESULTS Women who currently smoke had significantly less children than former or never smokers: the number of children per women (average±SD) was 1.38±1.05, 1.45±1.07 and 1.576±1.16, respectively (p<0.001). Women who currently smoke had their first child at an earlier age than the others: 26.7±5.2, 27.4±5.4 and 26.9±5.2 years old for current, former and never smokers, respectively, (p=0.01). Similar findings were found for men: number of children per men 1.475±1.16, 1.67±1.13 and 1.55±1.22 for current, former and never smokers, respectively (p<0.001); no difference was found regarding age at the first child. The difference persisted after multivariate adjustment (adjusted for age, body mass index, Caucasian origins, alcohol consumption, caffeinated drinks consumption, educational level, receiving social help and women taking contraceptives) for the age at first child among women. No association was found between Heaviness of Smoking Index and the number of children among current smokers in both genders. Women who smoke had their menopause more than 1 year prior than never-smoking women (48.9±0.2 years compared with 47.8±0.3 years, respectively, p=0.002). CONCLUSIONS Smoking is associated with an earlier age of having the first child and of menopause among women.
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Affiliation(s)
- Jean-Baptiste Oboni
- Department of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Pedro Marques-Vidal
- Department of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - François Bastardot
- Department of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Peter Vollenweider
- Department of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Gérard Waeber
- Department of Internal Medicine, Lausanne University Hospital (CHUV), Lausanne, Switzerland
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37
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Unal F, Ataseven N, Celebi Keskin A, Yuzbasioglu D. Answer to letter sent by Dr. M.D. Rogers (Chairman of the International Glutamate Technical Committee (IGTC), Belgium) related to Ataseven et al. article published in Food and Chemical Toxicology 2016; 91:8–18. Food Chem Toxicol 2016; 94:262-7. [DOI: 10.1016/j.fct.2016.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 11/29/2022]
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38
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Dutta EH, Behnia F, Boldogh I, Saade GR, Taylor BD, Kacerovský M, Menon R. Oxidative stress damage-associated molecular signaling pathways differentiate spontaneous preterm birth and preterm premature rupture of the membranes. Mol Hum Reprod 2016; 22:143-57. [PMID: 26690900 DOI: 10.1093/molehr/gav074] [Citation(s) in RCA: 115] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 12/15/2015] [Indexed: 12/16/2022] Open
Abstract
STUDY HYPOTHESIS In women with preterm premature rupture of the membranes (PPROM), increased oxidative stress may accelerate premature cellular senescence, senescence-associated inflammation and proteolysis, which may predispose them to rupture. STUDY FINDING We demonstrate mechanistic differences between preterm birth (PTB) and PPROM by revealing differences in fetal membrane redox status, oxidative stress-induced damage, distinct signaling pathways and senescence activation. WHAT IS KNOWN ALREADY Oxidative stress-associated fetal membrane damage and cell cycle arrest determine adverse pregnancy outcomes, such as spontaneous PTB and PPROM. STUDY DESIGN, SAMPLES/MATERIALS, METHODS Fetal membranes and amniotic fluid samples were collected from women with PTB and PPROM. Molecular, biochemical and histologic markers were used to document differences in oxidative stress and antioxidant enzyme status, DNA damage, secondary signaling activation by Ras-GTPase and mitogen-activated protein kinases, and activation of senescence between membranes from the two groups. MAIN RESULTS AND THE ROLE OF CHANCE Oxidative stress was higher and antioxidant enzymes were lower in PPROM compared with PTB. PTB membranes had minimal DNA damage and showed activation of Ras-GTPase and ERK/JNK signaling pathway with minimal signs of senescence. PPROM had higher numbers of cells with DNA damage, prosenescence stress kinase (p38 MAPK) activation and signs of senescence. LIMITATIONS, REASONS FOR CAUTION Samples were obtained retrospectively after delivery. The markers of senescence that we tested are specific but are not sufficient to confirm senescence as the pathology in PPROM. WIDER IMPLICATIONS OF THE FINDINGS Oxidative stress-induced DNA damage and senescence are characteristics of fetal membranes from PPROM, compared with PTB with intact membranes. PTB and PPROM arise from distinct pathophysiologic pathways. Oxidative stress and oxidative stress-induced cellular damages are likely determinants of the mechanistic signaling pathways and phenotypic outcome. STUDY FUNDING AND COMPETING INTERESTS This study is supported by developmental funds to Dr R. Menon from the Department of Obstetrics and Gynecology at The University of Texas Medical Branch at Galveston and funds to Dr M. Kacerovský from the Ministry of Health Czech Republic (UHHK, 001799906). The authors report no conflict of interest.
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Affiliation(s)
- Eryn H Dutta
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, 301 University Blvd, MRB 11-158, Galveston, TX 77555, USA Medical Corps GME Programs (FTOS/OFI), Navy Medicine Professional Development Center, Bethesda, MD, USA
| | - Faranak Behnia
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, 301 University Blvd, MRB 11-158, Galveston, TX 77555, USA
| | - Istvan Boldogh
- Department of Microbiology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - George R Saade
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, 301 University Blvd, MRB 11-158, Galveston, TX 77555, USA
| | - Brandie D Taylor
- Department of Epidemiology & Biostatistics, Texas A&M University System Health Science Center, College Station, TX, USA
| | - Marian Kacerovský
- Department of Obstetrics & Gynecology, Charles University of Prague, Faculty of Medicine, University Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Ramkumar Menon
- Division of Maternal-Fetal Medicine & Perinatal Research, Department of Obstetrics & Gynecology, The University of Texas Medical Branch at Galveston, 301 University Blvd, MRB 11-158, Galveston, TX 77555, USA
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39
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Langie SAS, Koppen G, Desaulniers D, Al-Mulla F, Al-Temaimi R, Amedei A, Azqueta A, Bisson WH, Brown DG, Brunborg G, Charles AK, Chen T, Colacci A, Darroudi F, Forte S, Gonzalez L, Hamid RA, Knudsen LE, Leyns L, Lopez de Cerain Salsamendi A, Memeo L, Mondello C, Mothersill C, Olsen AK, Pavanello S, Raju J, Rojas E, Roy R, Ryan EP, Ostrosky-Wegman P, Salem HK, Scovassi AI, Singh N, Vaccari M, Van Schooten FJ, Valverde M, Woodrick J, Zhang L, van Larebeke N, Kirsch-Volders M, Collins AR. Causes of genome instability: the effect of low dose chemical exposures in modern society. Carcinogenesis 2015; 36 Suppl 1:S61-88. [PMID: 26106144 DOI: 10.1093/carcin/bgv031] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Genome instability is a prerequisite for the development of cancer. It occurs when genome maintenance systems fail to safeguard the genome's integrity, whether as a consequence of inherited defects or induced via exposure to environmental agents (chemicals, biological agents and radiation). Thus, genome instability can be defined as an enhanced tendency for the genome to acquire mutations; ranging from changes to the nucleotide sequence to chromosomal gain, rearrangements or loss. This review raises the hypothesis that in addition to known human carcinogens, exposure to low dose of other chemicals present in our modern society could contribute to carcinogenesis by indirectly affecting genome stability. The selected chemicals with their mechanisms of action proposed to indirectly contribute to genome instability are: heavy metals (DNA repair, epigenetic modification, DNA damage signaling, telomere length), acrylamide (DNA repair, chromosome segregation), bisphenol A (epigenetic modification, DNA damage signaling, mitochondrial function, chromosome segregation), benomyl (chromosome segregation), quinones (epigenetic modification) and nano-sized particles (epigenetic pathways, mitochondrial function, chromosome segregation, telomere length). The purpose of this review is to describe the crucial aspects of genome instability, to outline the ways in which environmental chemicals can affect this cancer hallmark and to identify candidate chemicals for further study. The overall aim is to make scientists aware of the increasing need to unravel the underlying mechanisms via which chemicals at low doses can induce genome instability and thus promote carcinogenesis.
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Affiliation(s)
- Sabine A S Langie
- Environmental Risk and Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium, Health Canada, Environmental Health Sciences and Research Bureau, Environmental Health Centre, Ottawa, Ontario K1A0K9, Canada, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy, Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Navarra, Pamplona 31009, Spain, Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97331, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, PO Box 4404, N-0403 Oslo, Norway, Hopkins Building, School of Biological Sciences, University of Reading, Reading, Berkshire RG6 6UB, UK, Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Human and Environmental Safety Research, Department of Health Sciences, College of North Atlantic, Doha, State of Qatar, Mediterranean Institute of Oncology, 95029 Viagrande, Italy, Laboratory for Cell Genetics, Vrije Universiteit Brussel, Brussels 1050, Belgium, Department of Biomedical Science, Faculty of Medicine and Health Sciences, University Putra, Serdang 43400, Selangor, Malaysia, University of Copenhagen, Department of Public Health, Copenhagen 1353, Denmark, Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy, Medical Phys
| | - Gudrun Koppen
- Environmental Risk and Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium, Health Canada, Environmental Health Sciences and Research Bureau, Environmental Health Centre, Ottawa, Ontario K1A0K9, Canada, Department of Pathology, Kuwait University, Safat 13110, Kuwait, Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy, Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Navarra, Pamplona 31009, Spain, Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97331, USA, Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA, Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, PO Box 4404, N-0403 Oslo, Norway, Hopkins Building, School of Biological Sciences, University of Reading, Reading, Berkshire RG6 6UB, UK, Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA, Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy, Human and Environmental Safety Research, Department of Health Sciences, College of North Atlantic, Doha, State of Qatar, Mediterranean Institute of Oncology, 95029 Viagrande, Italy, Laboratory for Cell Genetics, Vrije Universiteit Brussel, Brussels 1050, Belgium, Department of Biomedical Science, Faculty of Medicine and Health Sciences, University Putra, Serdang 43400, Selangor, Malaysia, University of Copenhagen, Department of Public Health, Copenhagen 1353, Denmark, Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy, Medical Phys
| | - Daniel Desaulniers
- Health Canada, Environmental Health Sciences and Research Bureau, Environmental Health Centre, Ottawa, Ontario K1A0K9, Canada
| | - Fahd Al-Mulla
- Department of Pathology, Kuwait University, Safat 13110, Kuwait
| | | | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Firenze, Florence 50134, Italy
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Navarra, Pamplona 31009, Spain
| | - William H Bisson
- Environmental and Molecular Toxicology, Environmental Health Sciences Center, Oregon State University, Corvallis, OR 97331, USA
| | - Dustin G Brown
- Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Gunnar Brunborg
- Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, PO Box 4404, N-0403 Oslo, Norway
| | - Amelia K Charles
- Hopkins Building, School of Biological Sciences, University of Reading, Reading, Berkshire RG6 6UB, UK
| | - Tao Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA
| | - Annamaria Colacci
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Firouz Darroudi
- Human and Environmental Safety Research, Department of Health Sciences, College of North Atlantic, Doha, State of Qatar
| | - Stefano Forte
- Mediterranean Institute of Oncology, 95029 Viagrande, Italy
| | - Laetitia Gonzalez
- Laboratory for Cell Genetics, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Roslida A Hamid
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, University Putra, Serdang 43400, Selangor, Malaysia
| | - Lisbeth E Knudsen
- University of Copenhagen, Department of Public Health, Copenhagen 1353, Denmark
| | - Luc Leyns
- Laboratory for Cell Genetics, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | | | - Lorenzo Memeo
- Mediterranean Institute of Oncology, 95029 Viagrande, Italy
| | - Chiara Mondello
- Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy
| | - Carmel Mothersill
- Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario L8S4L8, Canada
| | - Ann-Karin Olsen
- Department of Chemicals and Radiation, Division of Environmental Medicine, Norwegian Institute of Public Health, PO Box 4404, N-0403 Oslo, Norway
| | - Sofia Pavanello
- Department of Cardiac, Thoracic and Vascular Sciences, Unit of Occupational Medicine, University of Padova, Padova 35128, Italy
| | - Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario K1A0K9, Canada
| | - Emilio Rojas
- Departamento de Medicina Genomica y Toxicologia Ambiental, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de México, México CP 04510, México
| | - Rabindra Roy
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences/Food Science and Human Nutrition, College of Veterinary Medicine and Biomedical Sciences, Colorado State University/Colorado School of Public Health, Fort Collins, CO 80523-1680, USA
| | - Patricia Ostrosky-Wegman
- Departamento de Medicina Genomica y Toxicologia Ambiental, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de México, México CP 04510, México
| | - Hosni K Salem
- Urology Department, kasr Al-Ainy School of Medicine, Cairo University, El Manial, Cairo 12515, Egypt
| | - A Ivana Scovassi
- Institute of Molecular Genetics, National Research Council, Pavia 27100, Italy
| | - Neetu Singh
- Centre for Advanced Research, King George's Medical University, Chowk, Lucknow 226003, Uttar Pradesh, India
| | - Monica Vaccari
- Center for Environmental Carcinogenesis and Risk Assessment, Environmental Protection and Health Prevention Agency, Bologna 40126, Italy
| | - Frederik J Van Schooten
- Department of Toxicology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, 6200MD, PO Box 61, Maastricht, The Netherlands
| | - Mahara Valverde
- Departamento de Medicina Genomica y Toxicologia Ambiental, Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de México, México CP 04510, México
| | - Jordan Woodrick
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Luoping Zhang
- Division of Environmental Health Sciences, School of Public Health, University of California, Berkeley, CA 94720-7360, USA
| | - Nik van Larebeke
- Laboratory for Analytical and Environmental Chemistry, Vrije Universiteit Brussel, Brussels 1050, Belgium, Study Centre for Carcinogenesis and Primary Prevention of Cancer, Ghent University, Ghent 9000, Belgium
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Chen X, Xu W, Miao M, Zhu Z, Dai J, Chen Z, Fang P, Wu J, Nie D, Wang L, Wang Z, Qiao Z, Shi H. Alteration of sperm protein profile induced by cigarette smoking. Acta Biochim Biophys Sin (Shanghai) 2015; 47:504-15. [PMID: 26063603 DOI: 10.1093/abbs/gmv045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 04/12/2015] [Indexed: 11/13/2022] Open
Abstract
Cigarette smoking is associated with lower semen quality, but how cigarette smoking changes the semen quality remains unclear. The aim of this study was to screen the differentially expressed proteins in the sperm of mice with daily exposure to cigarette smoke. The 2D gel electrophoresis (2DE) and mass spectrometry (MS) analyses results showed that the mouse sperm protein profile was altered by cigarette smoking. And 22 of the most abundant proteins that correspond to differentially expressed spots in 2DE gels of the sperm samples were identified. These proteins were classified into different groups based on their functions, such as energy metabolism, reproduction, and structural molecules. Furthermore, the 2DE and MS results of five proteins (Aldoa, ATP5a1, Gpx4, Cs, and Spatc1) were validated by western blot analysis and reverse transcriptase-polymerase chain reaction. Results showed that except Spatc1 the other four proteins showed statistically significant different protein levels between the smoking group and the control group (P < 0.05). The expressions of three genes (Aldoa, Gpx4, and Spatc1) were significantly different (P < 0.05) at transcription level between the smoking group and the control group. In addition, five proteins (Aldoa, ATP5a1, Spatc1, Cs, and Gpx4) in human sperm samples from 30 male smokers and 30 non-smokers were detected by western blot analysis. Two proteins (Aldoa and Cs) that are associated with energy production were found to be significantly altered, suggesting that these proteins may be potential diagnostic markers for evaluation of smoking risk in sperm. Further study of these proteins may provide insight into the pathogenic mechanisms underlying infertility in smoking persons.
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Affiliation(s)
- Xiaohui Chen
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China Shanghai Institute of Medical Genetics, Shanghai 200040, China
| | - Wangjie Xu
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Maohua Miao
- China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Zijue Zhu
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jingbo Dai
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhong Chen
- Department of Urology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Peng Fang
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Junqing Wu
- China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
| | - Dongsheng Nie
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lianyun Wang
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhaoxia Wang
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhongdong Qiao
- School of Life Sciences and Biotechnology, Shanghai Key Laboratory of Reproductive Medicine, Shanghai Jiao Tong University, Shanghai 200240, China Shanghai Institute of Medical Genetics, Shanghai 200040, China
| | - Huijuan Shi
- China National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, SIPPR, Fudan University, Shanghai 200032, China
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Nuclear and mitochondrial DNA alterations in newborns with prenatal exposure to cigarette smoke. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2015; 12:1135-55. [PMID: 25648174 PMCID: PMC4344659 DOI: 10.3390/ijerph120201135] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 01/13/2015] [Indexed: 12/17/2022]
Abstract
Newborns exposed to maternal cigarette smoke (CS) in utero have an increased risk of developing chronic diseases, cancer, and acquiring decreased cognitive function in adulthood. Although the literature reports many deleterious effects associated with maternal cigarette smoking on the fetus, the molecular alterations and mechanisms of action are not yet clear. Smoking may act directly on nuclear DNA by inducing mutations or epigenetic modifications. Recent studies also indicate that smoking may act on mitochondrial DNA by inducing a change in the number of copies to make up for the damage caused by smoking on the respiratory chain and lack of energy. In addition, individual genetic susceptibility plays a significant role in determining the effects of smoking during development. Furthermore, prior exposure of paternal and maternal gametes to cigarette smoke may affect the health of the developing individual, not only the in utero exposure. This review examines the genetic and epigenetic alterations in nuclear and mitochondrial DNA associated with smoke exposure during the most sensitive periods of development (prior to conception, prenatal and early postnatal) and assesses how such changes may have consequences for both fetal growth and development.
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Clinical applications of epigenetics in cardiovascular disease: the long road ahead. Transl Res 2015; 165:143-53. [PMID: 24768945 PMCID: PMC4190107 DOI: 10.1016/j.trsl.2014.04.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/01/2014] [Accepted: 04/01/2014] [Indexed: 12/18/2022]
Abstract
Epigenetic processes, defined as heritable changes in gene expression that occur without changes to the DNA sequence, have emerged as a promising area of cardiovascular disease research. Epigenetic information transcends that of the genotype alone and provides for an integrated etiologic picture of cardiovascular disease pathogenesis because of the interaction of the epigenome with the environment. Epigenetic biomarkers, which include DNA methylation, histone modifications, and RNA-based mechanisms, are both modifiable and cell-type specific, which makes them not only responsive to the environment, but also an attractive target for drug development. However, the enthusiasm surrounding possible applications of cardiovascular epigenetics currently outpaces available evidence. In this review, the authors synthesize the evidence linking epigenetic changes with cardiovascular disease, emphasizing the gap between the translational potential and the clinical reality of cardiovascular epigenetics.
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Ali A, Kurzawa-Zegota M, Najafzadeh M, Gopalan RC, Plewa MJ, Anderson D. Effect of drinking water disinfection by-products in human peripheral blood lymphocytes and sperm. Mutat Res 2014; 770:136-43. [PMID: 25771880 DOI: 10.1016/j.mrfmmm.2014.08.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 07/30/2014] [Accepted: 08/20/2014] [Indexed: 05/15/2023]
Abstract
BACKGROUND Drinking water disinfection by-products (DBPs) are generated by the chemical disinfection of water and may pose hazards to public health. Two major classes of DBPs are found in finished drinking water: haloacetic acids (HAAs) and trihalomethanes (THMs). HAAs are formed following disinfection with chlorine, which reacts with iodide and bromide in the water. Previously the HAAs were shown to be cytotoxic, genotoxic, mutagenic, teratogenic and carcinogenic. OBJECTIVES To determine the effect of HAAs in human somatic and germ cells and whether oxidative stress is involved in genotoxic action. In the present study both somatic and germ cells have been examined as peripheral blood lymphocytes and sperm. METHODS The effects of three HAA compounds: iodoacetic acid (IAA), bromoacetic acid (BAA) and chloroacetic acid (CAA) were investigated. After determining appropriate concentration responses, oxygen radical involvement with the antioxidants, butylated hydroxanisole (BHA) and the enzyme catalase, were investigated in the single cell gel electrophoresis (Comet) assay under alkaline conditions, >pH 13 and the micronucleus assay. RESULTS In the Comet assay, BHA and catalase were able to reduce DNA damage in each cell type compared to HAA alone. In the micronucleus assay, micronuclei (MNi) were found in peripheral lymphocytes exposed to all three HAAs and catalase and BHA were in general, able to reduce MNi induction, suggesting oxygen radicals play a role in both assays. CONCLUSION These observations are of concern to public health since both human somatic and germ cells show similar genotoxic responses.
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Affiliation(s)
- Aftab Ali
- Genetic & Reproductive Toxicology Group, Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - Malgorzata Kurzawa-Zegota
- Genetic & Reproductive Toxicology Group, Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - Mojgan Najafzadeh
- Genetic & Reproductive Toxicology Group, Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - Rajendran C Gopalan
- Genetic & Reproductive Toxicology Group, Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
| | - Michael J Plewa
- Department of Crop Sciences and NSF Science and Technology Center of Advanced Materials for the Purification of Water with Systems, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Diana Anderson
- Genetic & Reproductive Toxicology Group, Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK.
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Huang Y, Huang J, Lan H, Zhao G, Huang C. A meta-analysis of parental smoking and the risk of childhood brain tumors. PLoS One 2014; 9:e102910. [PMID: 25058491 PMCID: PMC4109951 DOI: 10.1371/journal.pone.0102910] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 06/23/2014] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Previous studies regarding the association between parental smoking and the risk of childhood brain tumors (CBT) have reported inconsistent results. We performed a meta-analysis to summarize evidence on this association and to quantify the potential dose-response relationship. METHODS A systematic literature search was conducted in the Medline and Embase databases. The summary relative risks (RRs) with 95% confidence intervals (CIs) were calculated. Dose-response meta-analysis was also performed for studies that reported categorical risk estimates for a series of smoking exposure levels. RESULTS A total of 17 studies fulfilled the inclusion criteria. In the meta-analyses, the summary RRs (95% CIs) of CBT for maternal smoking during pregnancy, paternal smoking during pregnancy, maternal smoking before pregnancy, and paternal smoking before pregnancy were 0.96 (0.86-1.07), 1.09 (0.97-1.22), 0.93 (0.85-1.00), and 1.09 (1.00-1.20), respectively. Dose-response meta-analysis also showed no significant association between parental smoking and the risk of CBT. CONCLUSIONS Findings from our meta-analysis indicate that parental smoking may not be associated with a risk of CBT.
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Affiliation(s)
- Yi Huang
- Department of Neurosurgery, Guangxi Minzu Hospital, Nanning, Guangxi Province, China
| | - Jianrong Huang
- Department of Neurosurgery, Guangxi Minzu Hospital, Nanning, Guangxi Province, China
| | - Huan Lan
- Department of Neurosurgery, Guangxi Minzu Hospital, Nanning, Guangxi Province, China
| | - GuanYan Zhao
- Department of Neurosurgery, Guangxi Minzu Hospital, Nanning, Guangxi Province, China
| | - ChunZhen Huang
- Department of Neurosurgery, Guangxi Minzu Hospital, Nanning, Guangxi Province, China
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Prepubertal start of father's smoking and increased body fat in his sons: further characterisation of paternal transgenerational responses. Eur J Hum Genet 2014; 22:1382-6. [PMID: 24690679 PMCID: PMC4085023 DOI: 10.1038/ejhg.2014.31] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 12/18/2013] [Accepted: 01/21/2014] [Indexed: 01/05/2023] Open
Abstract
Despite interest in the idea that transgenerational effects of adverse exposures might contribute to population health trends, there are few human data. This non-genetic inheritance is all the more remarkable when transmission is down the male-line as reported in a historical Swedish study, where the paternal grandfather's food supply in mid childhood was associated with the mortality rate in his grandsons. Using the Avon Longitudinal Study of Parents and Children's questionnaire data on smoking and smoking onset from 9886 fathers, we examined the growth of their children from 7–17 years. Adjusting for potential confounders, we assessed associations between body mass index (BMI), waist circumference, total fat mass and lean mass with the age at which the father had started smoking regularly. Of 5376 fathers who reported having ever smoked, 166 reported regular smoking <11 years of age. Before adjustment, those offspring whose fathers started smoking <11 years had the highest mean BMIs at each age tested. The adjusted mean differences in BMI, waist circumference and total fat mass in those sons whose fathers started smoking <11 years, compared with all other sons, increased with age, being significantly greater from 13 years onwards. There were no significant BMI associations in daughters, but they showed a reduction in total lean mass. Our results highlight the importance of the developmental timing of the paternal exposure as well as gender differences in offspring outcomes. Smoking by boys in mid childhood may contribute to obesity in adolescent boys of the next generation.
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Soubry A, Hoyo C, Jirtle RL, Murphy SK. A paternal environmental legacy: evidence for epigenetic inheritance through the male germ line. Bioessays 2014; 36:359-71. [PMID: 24431278 PMCID: PMC4047566 DOI: 10.1002/bies.201300113] [Citation(s) in RCA: 238] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Literature on maternal exposures and the risk of epigenetic changes or diseases in the offspring is growing. Paternal contributions are often not considered. However, some animal and epidemiologic studies on various contaminants, nutrition, and lifestyle-related conditions suggest a paternal influence on the offspring's future health. The phenotypic outcomes may have been attributed to DNA damage or mutations, but increasing evidence shows that the inheritance of environmentally induced functional changes of the genome, and related disorders, are (also) driven by epigenetic components. In this essay we suggest the existence of epigenetic windows of susceptibility to environmental insults during sperm development. Changes in DNA methylation, histone modification, and non-coding RNAs are viable mechanistic candidates for a non-genetic transfer of paternal environmental information, from maturing germ cell to zygote. Inclusion of paternal factors in future research will ultimately improve the understanding of transgenerational epigenetic plasticity and health-related effects in future generations.
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Affiliation(s)
- Adelheid Soubry
- Epidemiology Research Group, Department of Public Health and Primary Care, Faculty of Medicine, KU Leuven, Leuven, Belgium
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Anderson D, Schmid TE, Baumgartner A. Male-mediated developmental toxicity. Asian J Androl 2014; 16:81-8. [PMID: 24369136 PMCID: PMC3901885 DOI: 10.4103/1008-682x.122342] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 09/28/2013] [Accepted: 10/10/2013] [Indexed: 01/06/2023] Open
Abstract
Male-mediated developmental toxicity has been of concern for many years. The public became aware of male-mediated developmental toxicity in the early 1990s when it was reported that men working at Sellafield might be causing leukemia in their children. Human and animal studies have contributed to our current understanding of male-mediated effects. Animal studies in the 1980s and 1990s suggested that genetic damage after radiation and chemical exposure might be transmitted to offspring. With the increasing understanding that there is histone retention and modification, protamine incorporation into the chromatin and DNA methylation in mature sperm and that spermatozoal RNA transcripts can play important roles in the epigenetic state of sperm, heritable studies began to be viewed differently. Recent reports using molecular approaches have demonstrated that DNA damage can be transmitted to babies from smoking fathers, and expanded simple tandem repeats minisatellite mutations were found in the germline of fathers who were exposed to radiation from the Chernobyl nuclear power plant disaster. In epidemiological studies, it is possible to clarify whether damage is transmitted to the sons after exposure of the fathers. Paternally transmitted damage to the offspring is now recognized as a complex issue with genetic as well as epigenetic components.
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Affiliation(s)
- Diana Anderson
- Division of Medical Sciences, School of Life Sciences, University of Bradford, Bradford West Yorkshire, BD, UK
| | - Thomas E Schmid
- Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Adolf Baumgartner
- Division of Medical Sciences, School of Life Sciences, University of Bradford, Bradford West Yorkshire, BD, UK
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Fraser A, McNally W, Sattar N, Anderson EL, Lashen H, Fleming R, Lawlor DA, Nelson SM. Prenatal exposures and anti-Mullerian hormone in female adolescents: the Avon Longitudinal Study of Parents and Children. Am J Epidemiol 2013; 178:1414-23. [PMID: 24008900 PMCID: PMC3813311 DOI: 10.1093/aje/kwt137] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Given that the primordial ovarian follicular pool is established in utero, it may be influenced by parental characteristics and the intrauterine environment. Anti-Müllerian hormone (AMH) levels are increasingly recognized as a biomarker of ovarian reserve in females in adulthood and adolescence. We examined and compared associations of maternal and paternal prenatal exposures with AMH levels in adolescent (mean age, 15.4 years) female offspring (n = 1,399) using data from the Avon Longitudinal Study of Parents and Children, a United Kingdom birth cohort study that originated in 1991 and is still ongoing (data are from 1991–2008). The median AMH level was 3.67 ng/mL (interquartile range: 2.46–5.57). Paternal but not maternal smoking prior to and during pregnancy were inversely associated with AMH levels. No or irregular maternal menstrual cycles before pregnancy were associated with higher AMH levels in daughter during adolescence. High maternal gestational weight gain (top fifth versus the rest of the distribution) was associated with lower AMH levels in daughters. Parental age, body mass index, and alcohol intake during pregnancy, child's birth weight, and maternal parity and time to conception were not associated with daughters' AMH levels. Our results suggest that some parental preconceptual characteristics and environmental exposures while the child is in utero may influence the long-term ovarian development and function in female offspring.
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Affiliation(s)
- Abigail Fraser
- Correspondence to Dr. Abigail Fraser, Medical Research Council Integrative Epidemiology Unit, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK (e-mail: )
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Laubenthal J, Gdula MR, Dhawan A, Anderson D. Multicolor laser scanning confocal immunofluorescence microscopy of DNA damage response biomarkers. Methods Mol Biol 2013; 1044:311-23. [PMID: 23896884 DOI: 10.1007/978-1-62703-529-3_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
DNA damage through endogenous and environmental toxicants is a constant threat to both a human's ability to pass on intact genetic information to its offspring as well as somatic cells for their own survival. To counter these threats posed by DNA damage, cells have evolved a series of highly choreographed mechanisms--collectively defined as the DNA damage response (DDR)--to sense DNA lesions, signal their presence, and mediate their repair. Thus, regular DDR signalling cascades are vital to prevent the initiation and progression of many human diseases including cancer. Consequently, quantitative assessment of DNA damage and response became an important biomarker for assessment of human health and disease risk in biomonitoring studies. However, most quantitative DNA damage biomarker techniques require dissolution of the nuclear architecture and hence loss of spatial information. Laser scanning confocal immunofluorescence microscopy (LSCIM) of three-dimensionally preserved nuclei can be quantitative and maintain the spatial information. Here we describe the experimental protocols to quantify individual key events of the DDR cascade in three-dimensionally preserved nuclei by LSCIM with high resolution, using the simultaneous detection of Rad50 as well as phosphorylated H2AX and ATM and in somatic and germ cells as an example.
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Affiliation(s)
- Julian Laubenthal
- Medical Sciences Division, School of Life Sciences, University of Bradford, Bradford, UK
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Axelsson J, Rylander L, Rignell-Hydbom A, Silfver KÅ, Stenqvist A, Giwercman A. The Impact of Paternal and Maternal Smoking on Semen Quality of Adolescent Men. PLoS One 2013; 8:e66766. [PMID: 23840528 PMCID: PMC3694111 DOI: 10.1371/journal.pone.0066766] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 05/15/2013] [Indexed: 01/22/2023] Open
Abstract
Background Maternal smoking during pregnancy has been reported to negatively impact sperm counts of the sons. Sufficient data on the effect of paternal smoking is lacking. Objectives We wished to elucidate the impact of maternal and paternal smoking during pregnancy and current own smoking on reproductive function of the male offspring. Methods Semen parameters including sperm DNA integrity were analyzed in 295 adolescents from the general population close to Malmö, Sweden, recruited for the study during 2008–2010. Information on maternal smoking was obtained from the Swedish Medical Birth Register, and regarding own and paternal smoking from questionnaires. The impacts of maternal, paternal and own smoking were evaluated in a multivariate regression model and by use of models including interaction terms. Totally, three exposures and five outcomes were evaluated. Results In maternally unexposed men, paternal smoking was associated with 46% lower total sperm count (95%CI: 21%, 64%) in maternally unexposed men. Both paternal and maternal smoking were associated with a lower sperm concentration (mean differences: 35%; 95%CI: 8.1%, 55% and 36%; 95%CI: 3.9%, 57%, respectively) if the other parent was a non-smoker. No statistically significant impact of own smoking on semen parameters was seen. Conclusions Prenatal both maternal and paternal smoking were separately associated with some decrease in sperm count in men of whom the other parent was not reported to smoke.
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Affiliation(s)
- Jonatan Axelsson
- Reproductive Medicine Centre, Skåne University Hospital, Malmö, Sweden
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
- * E-mail:
| | - Lars Rylander
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Anna Rignell-Hydbom
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | | | - Amelie Stenqvist
- Reproductive Medicine Centre, Skåne University Hospital, Malmö, Sweden
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