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Pilkay S, Riffer A, Carroll A. Trauma context exerts intergenerational effects on child mental health via DNA methylation. Epigenetics 2024; 19:2333654. [PMID: 38577817 PMCID: PMC11000619 DOI: 10.1080/15592294.2024.2333654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 03/18/2024] [Indexed: 04/06/2024] Open
Abstract
Many people experience traumatic or negative events, but few develop mental health issues as a result. This study investigated whether newborn DNA methylation (DNAm) previously associated with maternal childhood physical abuse by her father affected the child's mental health and physical growth, as well as whether it mediated or moderated developmental outcomes. METHODS Study sample (N = 903) and data came from Bristol University's Avon Longitudinal Study of Parents and Children. DNAm was measured in cord blood at birth. DNAm data was preprocessed, normalized, and quality controlled before subsetting to 60 CpG sites of interest from previous research. Linear regression analysis examined newborn DNAm and child development outcome associations. Sobel test examined the mediating relationship between mother's history of childhood abuse by father, newborn targeted gene DNAm of significant CpG sites, and child's mental health and physical growth. Moderation analyses examined the interaction effects between the significant CpG sites and mothers' physical abuse by their fathers on child's mental health and physical growth. RESULTS Full cohort analyses showed that newborn DNAm of several different CpG sites associates with separation anxiety, fear, and unhappy/tearful presentations in children aged 6-7 y. Sex-specific associations emerged with boys showing associations with anxiety and fear, and girls showing associations with fear and unhappiness. In boys only, cord blood DNAm mediates the effect of maternal childhood trauma on offspring mental health. No moderation effects emerged. CONCLUSION Intergenerational effects of mother's relationship to her abuser present in newborn DNAm associate with 7-year-old child's mental health, show sex-specific effects, and newborn DNAm does mediate maternal childhood trauma effects on offspring mental health in early-life.
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Affiliation(s)
- Stefanie Pilkay
- Falk College of Sport and Human Dynamics, School of Social Work, Syracuse University, Syracuse, NYUSA
| | - Andie Riffer
- Jane Addams College of Social Work, University of Illinois at Chicago, Chicago, IL, USA
| | - Andrew Carroll
- Falk College of Sport and Human Dynamics, School of Social Work, Syracuse University, Syracuse, NYUSA
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Borra C, González L, Patiño D. Mothers' school starting age and infant health. Health Econ 2024; 33:1153-1191. [PMID: 38341769 DOI: 10.1002/hec.4809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 02/13/2024]
Abstract
We study the effects of women's school starting age on the infant health of their offspring. In Spain, children born in December start school a year earlier than those born the following January, despite being essentially the same age. We follow a regression discontinuity design to compare the health at birth of the children of women born in January versus the previous December, using administrative, population-level data. We find small and insignificant effects on average weight at birth, but, compared to the children of December-born mothers, the children of January-born mothers are more likely to have very low birthweight. We then show that January-born women have the same educational attainment and the same partnership dynamics as December-born women. However, they finish school later and are (several months) older when they have their first child. Our results suggest that maternal age is a plausible mechanism behind our estimated impacts of school starting age on infant health.
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Affiliation(s)
- Cristina Borra
- Economics and Economic History, Facultad de Ciencias Económicas y Empresariales, Universidad de Sevilla, Seville, Spain
| | - Libertad González
- Universitat Pompeu Fabra and Barcelona School of Economics, Barcelona, Spain
| | - David Patiño
- Economics and Economic History, Facultad de Ciencias Económicas y Empresariales, Universidad de Sevilla, Seville, Spain
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3
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Liu X, Liu F, Liu L, Song Y, Liu H. Carbamazepine transmits immune effect by activation of gut-liver axis and TLR signaling pathway from parental zebrafish to offspring. Toxicol Sci 2024; 199:108-119. [PMID: 38445754 DOI: 10.1093/toxsci/kfae026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
Carbamazepine (CBZ) has been identified in the aquatic environment as an emerging contaminant. Its immune effect across generations at environmentally relevant concentrations is little known. We aim to elucidate the effects of CBZ on the immune system in zebrafish (Danio rerio), hypothesizing the effects caused by CBZ exposure in the parental generation can be passed on to its offspring, leading to impairment of innate immune function and defense against pathogen weakened. A suite of bioassays (including a test with added lipopolysaccharide) was used to measure the effects of environmentally relevant levels of CBZ (1, 10, and 100 μg/l) on zebrafish at multiple biological levels, and across 2 successive generations (21 days exposure for F0; 5 and 21 days exposure or nonexposure for F1). The results showed that CBZ affected homeostasis in the immune system, caused liver vacuolization, increased the inflammation-related microbiota proportion in gut, and decreased reproduction, by induction of oxidative stress and modulation of Toll-like receptors (TLR) signaling pathway on gut-liver axis. The effects of exposure to CBZ over 21 days in F0 could be passed to the next generation. Intergenerational effects on TLR and antioxidant defense system were also observed in nonexposed F1 at 5 days post-fertilization (5 dpf), but diminished at 21 dpf. The finding provided evidence to unravel immune response by gut-liver axis mediated and oxidative stress under 4 test conditions. The study has raised a potential concern about the multigenerational immune effects of environmental pollutants and calls for a focus on the risk of synergetic pathogen infection.
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Affiliation(s)
- Xuan Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Fan Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - Li Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
| | - You Song
- Section of Ecotoxicology and Risk Assessment, Norwegian Institute for Water Research (NIVA), Oslo 0579, Norway
| | - Hongling Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P.R. China
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4
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Xue L, Sun J, Sun Y, Wang Y, Zhang K, Fan M, Qian H, Li Y, Wang L. Maternal Brown Rice Diet during Pregnancy Promotes Adipose Tissue Browning in Offspring via Reprogramming PKA Signaling and DNA Methylation. Mol Nutr Food Res 2024:e2300861. [PMID: 38566521 DOI: 10.1002/mnfr.202300861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/23/2024] [Indexed: 04/04/2024]
Abstract
SCOPE Brown rice, the most consumed food worldwide, has been shown to possess beneficial effects on the prevention of metabolic diseases. However, the way in which maternal brown rice diet improves metabolism in offspring and the regulatory mechanisms remains unclear. The study explores the epigenetic regulation of offspring energy metabolic homeostasis by maternal brown rice diet during pregnancy. METHODS AND RESULTS Female mice are fed brown rice during pregnancy, and then body phenotypes, the histopathological analysis, and adipose tissues biochemistry assay of offspring mice are detected. It is found that maternal brown rice diet significantly reduces body weight and fat mass, increases energy expenditure and heat production in offspring. Maternal brown rice diet increases uncoupling protein 1 (UCP1) protein level and upregulates the mRNA expression of thermogenic genes in adipose tissues. Mechanistically, protein kinase A (PKA) signaling is likely responsible in the induced thermogenic program in offspring adipocytes, and the progeny adipocytes browning program is altered due to decreased level of DNA methyltransferase 1 protein and hypomethylation of the transcriptional coregulator positive regulatory domain containing 16 (PRDM16). CONCLUSIONS These findings demonstrate that maternal brown rice during pregnancy improves offspring mice metabolic homeostasis via promoting adipose browning, and its mechanisms may be mediated by DNA methylation reprogramming.
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Affiliation(s)
- Lamei Xue
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Juan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yujie Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yu Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Kuiliang Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Mingcong Fan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Haifeng Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Yan Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Li Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
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Crino OL, Bonduriansky R, Martin LB, Noble DWA. A conceptual framework for understanding stress-induced physiological and transgenerational effects on population responses to climate change. Evol Lett 2024; 8:161-171. [PMID: 38370553 PMCID: PMC10871929 DOI: 10.1093/evlett/qrad037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/03/2023] [Accepted: 09/04/2023] [Indexed: 02/20/2024] Open
Abstract
Organisms are experiencing higher average temperatures and greater temperature variability because of anthropogenic climate change. Some populations respond to changes in temperature by shifting their ranges or adjusting their phenotypes via plasticity and/or evolution, while others go extinct. Predicting how populations will respond to temperature changes is challenging because extreme and unpredictable climate changes will exert novel selective pressures. For this reason, there is a need to understand the physiological mechanisms that regulate organismal responses to temperature changes. In vertebrates, glucocorticoid hormones mediate physiological and behavioral responses to environmental stressors and thus are likely to play an important role in how vertebrates respond to global temperature changes. Glucocorticoids have cascading effects that influence the phenotype and fitness of individuals, and some of these effects can be transmitted to offspring via trans- or intergenerational effects. Consequently, glucocorticoid-mediated responses could affect populations and could even be a powerful driver of rapid evolutionary change. Here, we present a conceptual framework that outlines how temperature changes due to global climate change could affect population persistence via glucocorticoid responses within and across generations (via epigenetic modifications). We briefly review glucocorticoid physiology, the interactions between environmental temperatures and glucocorticoid responses, and the phenotypic consequences of glucocorticoid responses within and across generations. We then discuss possible hypotheses for how glucocorticoid-mediated phenotypic effects might impact fitness and population persistence via evolutionary change. Finally, we pose pressing questions to guide future research. Understanding the physiological mechanisms that underpin the responses of vertebrates to elevated temperatures will help predict population-level responses to the changing climates we are experiencing.
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Affiliation(s)
- Ondi L Crino
- College of Science and Engineering, Flinders University, Bedford Park, SA, Australia
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT, Australia
| | - Russell Bonduriansky
- Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Lynn B Martin
- Global Health and Infectious Disease Research Center and Center for Genomics, University of South Florida, Tampa, FL, United States
| | - Daniel W A Noble
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, ACT, Australia
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6
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Ritfeld GJ, Wang M, Shapiro Z, Kable JA, Coles CD. Parenting by individuals with fetal alcohol spectrum disorders and neurobehavioral outcomes in their offspring. Alcohol Clin Exp Res (Hoboken) 2024; 48:400-408. [PMID: 38149361 PMCID: PMC10922647 DOI: 10.1111/acer.15256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/28/2023]
Abstract
BACKGROUND The neurobehavioral health impairments associated with prenatal alcohol exposure are now known to persist through adulthood. However, little is known about how these impairments affect individuals' parenting abilities and the neurobehavioral health of their offspring. This study compares parents with fetal alcohol spectrum disorder (FASD) with socioeconomically matched, nonexposed parents on measures of parenting and family support and assesses the neurobehavioral health of the children in both groups. METHODS Forty-nine parent-child dyads were recruited from a longitudinal cohort of low socioeconomic status. Measures included the Parenting Styles and Dimensions Questionnaire, Family Support Scale, an in-depth psychosocial history, the Pediatric Symptom Checklist (PSC; parent and child reports), the Achenbach Child Behavior Checklist (CBCL), a screening psychiatric evaluation of the child, the NIH Toolbox Cognition Battery for Children, The Vineland Adaptive Behavior Scales-Third Edition caregiver rating form, and the Traumatic Events Screening Inventory (parent and child reports). RESULTS Cognitive functioning was impaired for both offspring of parents with FASD (x ¯ = 81.1, SD = 13.0) and control parents (x ¯ = 79.9, SD = 16.1), but despite similar impairments, children of parents with FASD were less likely to have an Individualized Education Plan than controls. Adaptive functioning was adequate for both groups (x ¯ = 92.1, SD = 15.4 in exposed vs.x ¯ = 94.3, SD = 12.3 in controls) and CBCL and PSC scores in both groups were within normal limits. Parents in both groups showed a predominantly authoritative parenting style. Despite a similar frequency of adverse childhood experiences in both groups, parents with FASD were less likely to recognize their child's adverse experiences. CONCLUSION Parents with FASD display notable strengths including a predominantly authoritative parenting style. However, parents with FASD underrecognize child trauma and underutilize developmental services compared to socioeconomically matched controls, despite similar neurocognitive impairments. Impairments in adaptive functioning in parents with FASD may translate into difficulties with child-parent communication and limit both insight into neurobehavioral problems and advocacy skills. There is a need to identify and support parents with FASD to optimize their parenting abilities in the context of their individual strengths and difficulties.
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Affiliation(s)
- Gaby J Ritfeld
- Barrow Neurological Institute at Phoenix Children's, Phoenix, Arizona, USA
- Department of Child Health, University of Arizona College of Medicine-Phoenix, Phoenix, Arizona, USA
- Department of Psychiatry and Behavioral Sciences and Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
- Department of Psychiatry, Creighton University School of Medicine, Phoenix, Arizona, USA
| | - Michael Wang
- Department of Psychiatry, Creighton University School of Medicine, Phoenix, Arizona, USA
| | - Zvi Shapiro
- Department of Psychiatry and Behavioral Sciences and Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Julie A Kable
- Department of Psychiatry and Behavioral Sciences and Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Claire D Coles
- Department of Psychiatry and Behavioral Sciences and Pediatrics, Emory University School of Medicine, Atlanta, Georgia, USA
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7
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Li J, Liu J, Zhang Y, Qiu H, Zheng J, Xue J, Jin J, Ni F, Zhang C, Chen C, Sun X, Wang H, Zhang D. Effects of paternal ionizing radiation exposure on fertility and offspring's health. Reprod Med Biol 2024; 23:e12567. [PMID: 38528990 PMCID: PMC10961711 DOI: 10.1002/rmb2.12567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/13/2024] [Accepted: 02/20/2024] [Indexed: 03/27/2024] Open
Abstract
Purpose The intergenerational effects of ionizing radiation remain controversial. Extensive insights have been revealed for DNA mutations and cancer incidence in progeny, yet many of these results were obtained by immediate post-radiation mating. However, conception at short times after radiation exposure is likely to be avoided. After a long period of fertility recovery, whether unexposed sperm derived from exposed spermatogonia would challenge the health of the offspring is not yet clearly demonstrated. Methods Ten-week-old C57BL/6J males underwent whole-body acute γ irradiation at 0 and 6.4 Gy. Testes and sperm were collected at different times after radiation to examine reproductive changes. The reproductive, metabolic, and neurodevelopmental parameters were measured in the offspring of controls and the offspring derived from irradiated undifferentiated spermatogonia. Results Paternal fertility was lost after acute 6.4 Gy γ radiation and recovered at 10-11 weeks post irradiation in mice. The reproductive, metabolic, and neurodevelopmental health of offspring born to irradiated undifferentiated spermatogonia were comparable to those of controls. Conclusion The male mice could have healthy offspring after recovery from the damage caused by ionizing radiation.
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Affiliation(s)
- Jiaqun Li
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Juan Liu
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Yanye Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Hong Qiu
- Zhejiang Provincial Key Laboratory for Cancer Molecular Cell BiologyLife Sciences Institute, Zhejiang UniversityHangzhouChina
| | - Junyan Zheng
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Jinglei Xue
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Jiani Jin
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Feida Ni
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Chunxi Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Chuan Chen
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Xiao Sun
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
| | - Huiquan Wang
- The School of Aeronautics and AstronauticsZhejiang UniversityHangzhouChina
| | - Dan Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's HospitalZhejiang University School of MedicineZhejiangChina
- Clinical Research Center on Birth Defect Prevention and Intervention of Zhejiang ProvinceHangzhouChina
- Zhejiang Provincial Clinical Research Center for Child HealthHangzhouChina
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Auge G, Hankofer V, Groth M, Antoniou-Kourounioti R, Ratikainen I, Lampei C. Plant environmental memory: implications, mechanisms and opportunities for plant scientists and beyond. AoB Plants 2023; 15:plad032. [PMID: 37415723 PMCID: PMC10321398 DOI: 10.1093/aobpla/plad032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 06/01/2023] [Indexed: 07/08/2023]
Abstract
Plants are extremely plastic organisms. They continuously receive and integrate environmental information and adjust their growth and development to favour fitness and survival. When this integration of information affects subsequent life stages or the development of subsequent generations, it can be considered an environmental memory. Thus, plant memory is a relevant mechanism by which plants respond adaptively to different environments. If the cost of maintaining the response is offset by its benefits, it may influence evolutionary trajectories. As such, plant memory has a sophisticated underlying molecular mechanism with multiple components and layers. Nonetheless, when mathematical modelling is combined with knowledge of ecological, physiological, and developmental effects as well as molecular mechanisms as a tool for understanding plant memory, the combined potential becomes unfathomable for the management of plant communities in natural and agricultural ecosystems. In this review, we summarize recent advances in the understanding of plant memory, discuss the ecological requirements for its evolution, outline the multilayered molecular network and mechanisms required for accurate and fail-proof plant responses to variable environments, point out the direct involvement of the plant metabolism and discuss the tremendous potential of various types of models to further our understanding of the plant's environmental memory. Throughout, we emphasize the use of plant memory as a tool to unlock the secrets of the natural world.
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Affiliation(s)
| | - Valentin Hankofer
- Institute of Biochemical Plant Pathology, Helmholtz Munich, Ingolstädter Landstraße 1, 85764 Oberschleißheim, Neuherberg, Germany
| | - Martin Groth
- Institute of Functional Epigenetics, Helmholtz Munich, Ingolstädter Landstraße 1, 85764 Oberschleißheim, Neuherberg, Germany
| | - Rea Antoniou-Kourounioti
- School of Molecular Biosciences, University of Glasgow, Sir James Black Building, University Ave, Glasgow G12 8QQ, UK
| | - Irja Ratikainen
- Department of Biology, Centre for Biodiversity Dynamics, Norwegian University of Science and Technology, Realfagbygget, NO-7491 Trondheim, Norway
| | - Christian Lampei
- Department of Biology (FB17), Plant Ecology and Geobotany Group, University of Marburg, Karl-von-Frisch-Straße 8, 35032 Marburg, Germany
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Gregory S, Suderman M, Northstone K, Pembrey M, Watkins S, Iles-Caven Y, Golding J. Regular smoking of male ancestors in adolescence and fat mass in young adult grandchildren and great-grandchildren. Wellcome Open Res 2023; 7:184. [PMID: 36320451 PMCID: PMC9597126 DOI: 10.12688/wellcomeopenres.17950.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2023] [Indexed: 03/25/2023] Open
Abstract
Background: Previous studies using the Avon Longitudinal Study of Parents and Children (ALSPAC) have shown that if men commenced smoking prior to the onset of puberty their sons, their granddaughters and great-granddaughters were more likely to have excess fat (but not lean) mass during childhood, adolescence and early adulthood. In this study we assess associations between ancestral smoking during adolescence (ages 11-16 years) with fat and lean mass of subsequent generations at two ages. Methods: We analysed data on exposures of grandparents and great-grandparents collected by ALSPAC. The outcomes were the fat masses of their grandchildren and great-grandchildren measured at ages 17 and 24. Measures of lean mass were used as controls. Adjustment was made for 8-10 demographic factors using multiple regression. Results: We found associations between adolescent smoking of the paternal grandfathers and the adjusted fat mass of their grandchildren, but no associations with the grandchildren's lean mass. Grandchildren at age 17 had an average excess fat mass of +1.65 [95% CI +0.04, +3.26] Kg, and at age 24 an average excess of +1.55 [95% CI -0.27, +3.38] Kg. Adolescent smoking by the maternal grandfather showed similar, but weaker, associations: at 17 an average excess fat mass of +1.02 Kg [95% CI -0.20, +2.25] Kg, and at 24 an average excess of +1.28 [95% CI -0.11, +2.66] Kg. There were no pronounced differences between the sexes of the children. For the great-grandparents there were few convincing results, although numbers were small. Conclusions: We have shown associations between grandfathers' smoking in adolescence and increased fat (but not lean) mass in their children. Confirmation of these associations is required, either in a further data set or by demonstrating the presence of supportive biomarkers.
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Affiliation(s)
- Steven Gregory
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Matthew Suderman
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Kate Northstone
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Marcus Pembrey
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Sarah Watkins
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Yasmin Iles-Caven
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Jean Golding
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
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10
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Zeender V, Sbilordo SH, Roy J, Lüpold S. Paternal condition affects offspring reproduction and life history in a sex-specific manner in Drosophila melanogaster. Evolution 2023; 77:467-481. [PMID: 36626809 DOI: 10.1093/evolut/qpac051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 11/21/2022] [Accepted: 12/06/2022] [Indexed: 01/12/2023]
Abstract
Nongenetic parental effects can contribute to the adaptation of species to changing environments by circumventing some of the limitations of genetic inheritance. A clearer understanding of the influence of nongenetic inheritance and its potentially sex-specific responses in daughters and sons is needed to better predict the evolutionary trajectories of species. However, whereas nongenetic maternal effects have long been recognized and widely studied, comparatively little is known about corresponding paternal effects. Here, by following 30 isogenic lines of Drosophila melanogaster across two generations, each reared under two dietary regimes in each generation, we tested how protein restriction during larval development of the fathers affects the fitness and health of their daughters and sons. We then quantified genetic and non-genetic paternal, and direct environmental, effects across multiple axes of offspring fitness. Daughters and sons responded differently to their father's developmental history. While isolines differed in mean trait values, their specific responses to protein restriction generally varied little. The sex- and trait-specific responses to paternal effects emphasize the complexity of inter-generational parental effects, which raise important questions about their mode of transmission and adaptive value, including the potential for conflict between the sexes.
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Affiliation(s)
- Valérian Zeender
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Sonja H Sbilordo
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Jeannine Roy
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Stefan Lüpold
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
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11
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Sparks AM, Hammers M, Komdeur J, Burke T, Richardson DS, Dugdale HL. Sex-dependent effects of parental age on offspring fitness in a cooperatively breeding bird. Evol Lett 2022; 6:438-449. [PMID: 36579166 PMCID: PMC9783413 DOI: 10.1002/evl3.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
Parental age can have considerable effects on offspring phenotypes and health. However, intergenerational effects may also have longer term effects on offspring fitness. Few studies have investigated parental age effects on offspring fitness in natural populations while also testing for sex- and environment-specific effects. Further, longitudinal parental age effects may be masked by population-level processes such as the selective disappearance of poor-quality individuals. Here, we used multigenerational data collected on individually marked Seychelles warblers (Acrocephalus sechellensis) to investigate the impact of maternal and paternal age on offspring life span and lifetime reproductive success. We found negative effects of maternal age on female offspring life span and lifetime reproductive success, which were driven by within-mother effects. There was no difference in annual reproductive output of females born to older versus younger mothers, suggesting that the differences in offspring lifetime reproductive success were driven by effects on offspring life span. In contrast, there was no association between paternal age and female offspring life span or either maternal or paternal age and male offspring life span. Lifetime reproductive success, but not annual reproductive success, of male offspring increased with maternal age, but this was driven by between-mother effects. No paternal age effects were found on female offspring lifetime reproductive success but there was a positive between-father effect on male offspring lifetime reproductive success. We did not find strong evidence for environment-dependent parental age effects. Our study provides evidence for parental age effects on the lifetime fitness of offspring and shows that such effects can be sex dependent. These results add to the growing literature indicating the importance of intergenerational effects on long-term offspring performance and highlight that these effects can be an important driver of variation in longevity and fitness in the wild.
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Affiliation(s)
- Alexandra M. Sparks
- Faculty of Biological Sciences, School of BiologyUniversity of LeedsLeedsLS2 9JTUnited Kingdom,School of BiosciencesUniversity of SheffieldSheffieldS10 2TNUnited Kingdom
| | - Martijn Hammers
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningen9712 CPThe Netherlands,Aeres University of Applied SciencesAlmere1325 WBThe Netherlands
| | - Jan Komdeur
- Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningen9712 CPThe Netherlands
| | - Terry Burke
- School of BiosciencesUniversity of SheffieldSheffieldS10 2TNUnited Kingdom
| | - David S. Richardson
- School of Biological SciencesUniversity of East AngliaNorwichNR4 7TJUnited Kingdom,Nature SeychellesMahéRepublic of Seychelles
| | - Hannah L. Dugdale
- Faculty of Biological Sciences, School of BiologyUniversity of LeedsLeedsLS2 9JTUnited Kingdom,Groningen Institute for Evolutionary Life SciencesUniversity of GroningenGroningen9712 CPThe Netherlands
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12
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Torres JM, Yang Y, Rudolph KE, Meza E, Glymour MM, Courtin E. Adult Child Schooling and Older Parents' Cognitive Outcomes in the Survey of Health, Aging and Retirement in Europe (SHARE): A Quasi-Experimental Study. Am J Epidemiol 2022; 191:1906-1916. [PMID: 36040294 PMCID: PMC9767648 DOI: 10.1093/aje/kwac151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 06/29/2022] [Accepted: 08/16/2022] [Indexed: 02/01/2023] Open
Abstract
A growing body of research suggests that adult child educational attainment benefits older parents' cognitive outcomes via financial (e.g., direct monetary transfers) and nonfinancial (e.g., psychosocial) mechanisms. Quasi-experimental studies are needed to circumvent confounding bias. No such quasi-experimental studies have been completed in higher-income countries, where financial transfers from adult children to aging parents are rare. Using data on 8,159 adults aged ≥50 years in the Survey for Health, Aging and Retirement in Europe (2004/2005), we leveraged changes in compulsory schooling laws as quasi-experiments. Each year of increased schooling among respondents' oldest children was associated with better verbal fluency (β = 0.07, 95% CI: 0.02, 0.12) scores; overall associations with verbal memory scores were null, with mixed and imprecise evidence of association in models stratified by parent gender. We also evaluated associations with psychosocial outcomes as potentially important mechanisms. Increased schooling among respondents' oldest children was associated with higher quality-of-life scores and fewer depressive symptoms. Our findings present modest albeit inconsistent evidence that increases in schooling may have an "upward" influence on older parents' cognitive performance even in settings where financial transfers from adult children to their parents are uncommon. Associations with parents' psychosocial outcomes were more robust.
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Affiliation(s)
- Jacqueline M Torres
- Correspondence to Dr. Jacqueline M. Torres, Department of Epidemiology & Biostatistics, University of California, San Francisco, 550 16th Street, San Francisco, CA 94143 (e-mail: )
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13
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Affiliation(s)
- Nickole Moon
- Department of Psychiatry, University of Colorado, Aurora, CO, USA
| | | | - Tracy L Bale
- Department of Psychiatry, University of Colorado, Aurora, CO, USA
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14
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Gregory S, Suderman M, Northstone K, Pembrey M, Watkins S, Iles-Caven Y, Golding J. Regular smoking of male ancestors in adolescence and fat mass in young adult grandchildren and great-grandchildren. Wellcome Open Res 2022; 7:184. [PMID: 36320451 PMCID: PMC9597126 DOI: 10.12688/wellcomeopenres.17950.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2022] [Indexed: 11/20/2022] Open
Abstract
Background: Previous studies using the Avon Longitudinal Study of Parents and Children (ALSPAC) have shown that if men commenced smoking prior to the onset of puberty their sons, their granddaughters and great-granddaughters were more likely to have excess fat (but not lean) mass during childhood, adolescence and early adulthood. In this study we assess associations between ancestral smoking during adolescence (ages 11-16 years) with fat and lean mass of subsequent generations at two ages. Methods: We analysed data on exposures of grandparents and great-grandparents collected by ALSPAC. The outcomes were the fat masses of their grandchildren and great-grandchildren measured at ages 17 and 24. Measures of lean mass were used as controls. Adjustment was made for 8-10 demographic factors using multiple regression. Results: We found associations between adolescent smoking of the paternal grandfathers and the adjusted fat mass of their grandchildren, but no associations with the grandchildren's lean mass. Grandchildren at age 17 had an average excess fat mass of +1.65 [95% CI +0.04, +3.26] Kg, and at age 24 an average excess of +1.55 [95% CI -0.27, +3.38] Kg. Adolescent smoking by the maternal grandfather showed similar, but weaker, associations: at 17 an average excess fat mass of +1.02 Kg [95% CI -0.20, +2.25] Kg, and at 24 an average excess of +1.28 [95% CI -0.11, +2.66] Kg. There were no pronounced differences between the sexes of the children. For the great-grandparents there were few convincing results, although numbers were small. Conclusions: We have shown associations between grandfathers' smoking in adolescence and increased fat (but not lean) mass in their children. Confirmation of these associations is required, either in a further data set or by demonstrating the presence of supportive biomarkers.
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Affiliation(s)
- Steven Gregory
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Matthew Suderman
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Kate Northstone
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Marcus Pembrey
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Sarah Watkins
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Yasmin Iles-Caven
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
| | - Jean Golding
- Bristol Medical School (Population Health Sciences), University of Bristol, Bristol, Bristol, BS8 2BN, UK
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15
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Xue L, Sun J, Liu J, Hu C, Wu D, Nie C, Zhang K, Wang Y, Zhao L, Li X, Lu Y, Zhang L, Zhang D, Fan M, Qian H, Jiang H, Wong J, Li Y, Ying H, Chow BKC, Wang L, Li Y. Maternal secretin ameliorates obesity by promoting white adipose tissue browning in offspring. EMBO Rep 2022; 23:e54132. [PMID: 35652247 PMCID: PMC9253765 DOI: 10.15252/embr.202154132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 04/26/2022] [Accepted: 05/05/2022] [Indexed: 12/09/2023] Open
Abstract
Our knowledge of the coordination of intergenerational inheritance and offspring metabolic reprogramming by gastrointestinal endocrine factors is largely unknown. Here, we showed that secretin (SCT), a brain-gut peptide, is downregulated by overnutrition in pregnant mice and women. More importantly, genetic loss of SCT in the maternal gut results in undesirable phenotypes developed in offspring including enhanced high-fat diet (HFD)-induced obesity and attenuated browning of inguinal white adipose tissue (iWAT). Mechanistically, loss of maternal SCT represses iWAT browning in offspring by a global change in genome methylation pattern through upregulation of DNMT1. SCT functions to facilitate ubiquitination and degradation of DNMT1 by activating AMPKα, which contributes to the observed alteration of DNMT1 in progeny. Lastly, we showed that SCT treatment during pregnancy can reduce the development of obesity and improve glucose tolerance and insulin resistance in offspring of HFD-fed females, suggesting that SCT may serve as a novel biomarker or a strategy for preventing metabolic diseases.
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Affiliation(s)
- Lamei Xue
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Juan Sun
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Jinxin Liu
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Chaoping Hu
- Department of Neuromuscular DiseaseChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Dandan Wu
- Shanghai Key Laboratory of StomatologyDepartment of Oral & Cranio‐maxillofacial ScienceShanghai 9th People's HospitalCollege of StomatologySchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Chenzhipeng Nie
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Kuiliang Zhang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Yu Wang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Lei Zhao
- Department of Neuromuscular DiseaseChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Xihua Li
- Department of Neuromuscular DiseaseChildren’s Hospital of Fudan UniversityShanghaiChina
| | - Yan Lu
- Department of Endocrinology and MetabolismZhongshan HospitalFudan UniversityShanghaiChina
| | - Li Zhang
- Joint International Research Laboratory of CNS RegenerationGuangdong‐Hong Kong‐Macau Institute of CNS RegenerationJinan UniversityGuangzhouChina
| | - Duo Zhang
- Clinical and Experimental TherapeuticsCollege of PharmacyUniversity of Georgia and Charlie Norwood VA Medical CenterAugustaGAUSA
| | - Mingcong Fan
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Haifeng Qian
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Haowen Jiang
- State Key Laboratory of Drug ResearchShanghai Institute of Materia MedicaChinese Academy of SciencesShanghaiChina
| | - Jiemin Wong
- Shanghai Key Laboratory of Regulatory BiologyFengxian District Central Hospital‐ECNU Joint Center of Translational MedicineInstitute of Biomedical Sciences and School of Life SciencesEast China Normal UniversityShanghaiChina
| | - Yuying Li
- Chinese Academy of Sciences Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Hao Ying
- Chinese Academy of Sciences Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Billy KC Chow
- School of Biological SciencesUniversity of Hong KongHong KongChina
| | - Li Wang
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Yan Li
- State Key Laboratory of Food Science and TechnologySchool of Food Science and TechnologyJiangnan UniversityWuxiChina
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16
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Kronholm I. Evolution of anticipatory effects mediated by epigenetic changes. Environ Epigenet 2022; 8:dvac007. [PMID: 35475265 PMCID: PMC9031056 DOI: 10.1093/eep/dvac007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/07/2022] [Accepted: 03/14/2022] [Indexed: 05/20/2023]
Abstract
Anticipatory effects mediated by epigenetic changes occur when parents modify the phenotype of their offspring by making epigenetic changes in their gametes, guided by information from an environmental cue. To investigate when do anticipatory effects mediated by epigenetic changes evolve in a fluctuating environment, I use an individual-based simulation model with explicit genetic architecture. The model allows for the population to respond to environmental changes by evolving plasticity, bet hedging, or by tracking the environment with genetic adaptation, in addition to the evolution of anticipatory effects. The results show that anticipatory effects evolve when the environmental cue provides reliable information about the environment and the environment changes at intermediate rates, provided that fitness costs of anticipatory effects are rather low. Moreover, evolution of anticipatory effects is quite robust to different genetic architectures when reliability of the environmental cue is high. Anticipatory effects always give smaller fitness benefits than within-generation plasticity, suggesting a possible reason for generally small observed anticipatory effects in empirical studies.
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Affiliation(s)
- Ilkka Kronholm
- *Correspondence address. Department of Biological and Environmental Sciences, University of Jyväskylä, P.O. Box 35, Jyväskylä 40014, Finland. Tel: +358 14 617 239; Fax: +358 14 617 239; E-mail:
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17
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Schellhas L, Haan E, Easey KE, Wootton RE, Sallis HM, Sharp GC, Munafò MR, Zuccolo L. Maternal and child genetic liability for smoking and caffeine consumption and child mental health: an intergenerational genetic risk score analysis in the ALSPAC cohort. Addiction 2021; 116:3153-3166. [PMID: 33891774 PMCID: PMC9376939 DOI: 10.1111/add.15521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/30/2020] [Accepted: 04/07/2021] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND AIMS Previous studies suggest an association between maternal tobacco and caffeine consumption during and outside of pregnancy and offspring mental health. We aimed to separate effects of the maternal environment (intrauterine or postnatal) from pleiotropic genetic effects. DESIGN Secondary analysis of a longitudinal study. We (i) validated smoking and caffeine genetic risk scores (GRS) derived from published genome-wide association study (GWAS) for use during pregnancy, (ii) compared estimated effects of maternal and offspring GRS on childhood mental health outcomes and (iii) tested associations between maternal and offspring GRS on their respective outcomes. SETTING We used data from a longitudinal birth cohort study from England, the Avon Longitudinal Study of Parents and Children (ALSPAC). PARTICIPANTS Our sample included 7921 mothers and 7964 offspring. MEASUREMENTS Mental health and non-mental health phenotypes were derived from questionnaires and clinical assessments: 79 maternal phenotypes assessed during and outside of pregnancy and 71 offspring phenotypes assessed in childhood (<10 years) and adolescence (11-18 years). FINDINGS The maternal smoking and caffeine GRS were associated with maternal smoking and caffeine consumption during pregnancy (2nd trimester: Psmoking = 3.0 × 10-7 , Pcaffeine = 3.28 × 10-5 ). Both the maternal and offspring smoking GRS showed evidence of association with reduced childhood anxiety symptoms (βmaternal = -0.033; βoffspring = -0.031) and increased conduct disorder symptoms (βmaternal = 0.024; βoffspring = 0.030), after correcting for multiple testing. Finally, the maternal and offspring smoking GRS were associated with phenotypes related to sensation seeking behaviours in mothers and adolescence (e.g. increased symptoms of externalising disorders, extraversion and monotony avoidance). The caffeine GRS showed weaker evidence for associations with mental health outcomes. CONCLUSIONS We did not find strong evidence that maternal smoking and caffeine genetic risk scores have a causal effect on offspring mental health outcomes. Our results confirm that the smoking genetic risk scores also captures liability for sensation seeking personality traits.
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Affiliation(s)
- Laura Schellhas
- School of Psychological ScienceUniversity of BristolBristolUK
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
| | - Elis Haan
- School of Psychological ScienceUniversity of BristolBristolUK
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
| | - Kayleigh E. Easey
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- Department of Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUK
| | - Robyn E. Wootton
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- Department of Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUK
| | - Hannah M. Sallis
- School of Psychological ScienceUniversity of BristolBristolUK
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- Centre for Academic Mental Health, Bristol Medical SchoolUniversity of BristolBristolUK
| | - Gemma C. Sharp
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- Bristol Dental SchoolUniversity of BristolBristolUK
| | - Marcus R. Munafò
- School of Psychological ScienceUniversity of BristolBristolUK
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- NIHR Biomedical Research Centre at the University Hospitals Bristol NHS Foundation Trust and the University of BristolBristolUK
| | - Luisa Zuccolo
- MRC Integrative Epidemiology Unit at the University of BristolBristolUK
- Department of Population Health Sciences, Bristol Medical SchoolUniversity of BristolBristolUK
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18
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Abstract
Old parental age is commonly associated with negative effects on offspring life-history traits. Such parental senescence effects are predicted to have a cumulative detrimental effect over successive generations. However, old parents may benefit from producing higher quality offspring when these compete for seasonal resources. Thus, old parents may choose to increase investment in their offspring, thereby producing fewer but larger and more competitive progeny. We show that Caenorhabditis elegans hermaphrodites increase parental investment with advancing age, resulting in fitter offspring who reach their reproductive peak earlier. Remarkably, these effects increased over six successive generations of breeding from old parents and were subsequently reversed following a single generation of breeding from a young parent. Our findings support the hypothesis that offspring of old parents receive more resources and convert them into increasingly faster life histories. These results contradict the theory that old parents transfer a cumulative detrimental 'ageing factor' to their offspring.
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Affiliation(s)
- Laura M Travers
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Hanne Carlsson
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Martin I Lind
- Department of Ecology and Genetics, Animal Ecology, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden
| | - Alexei A Maklakov
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
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19
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Martynyuk AE, Ju LS, Morey TE. The potential role of stress and sex steroids in heritable effects of sevoflurane. Biol Reprod 2021; 105:735-746. [PMID: 34192761 DOI: 10.1093/biolre/ioab129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/17/2021] [Accepted: 06/25/2021] [Indexed: 12/11/2022] Open
Abstract
Most surgical procedures require general anesthesia, which is a reversible deep sedation state lacking all perception. The induction of this state is possible because of complex molecular and neuronal network actions of general anesthetics (GAs) and other pharmacological agents. Laboratory and clinical studies indicate that the effects of GAs may not be completely reversible upon anesthesia withdrawal. The long-term neurocognitive effects of GAs, especially when administered at the extremes of ages, are an increasingly recognized health concern and the subject of extensive laboratory and clinical research. Initial studies in rodents suggest that the adverse effects of GAs, whose actions involve enhancement of GABA type A receptor activity (GABAergic GAs), can also extend to future unexposed offspring. Importantly, experimental findings show that GABAergic GAs may induce heritable effects when administered from the early postnatal period to at least young adulthood, covering nearly all age groups that may have children after exposure to anesthesia. More studies are needed to understand when and how the clinical use of GAs in a large and growing population of patients can result in lower resilience to diseases in the even larger population of their unexposed offspring. This minireview is focused on the authors' published results and data in the literature supporting the notion that GABAergic GAs, in particular sevoflurane, may upregulate systemic levels of stress and sex steroids and alter expressions of genes that are essential for the functioning of these steroid systems. The authors hypothesize that stress and sex steroids are involved in the mediation of sex-specific heritable effects of sevoflurane.
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Affiliation(s)
- Anatoly E Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA.,McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, USA
| | - Ling-Sha Ju
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Timothy E Morey
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL, USA
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20
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Hahn J, Gold DR, Coull BA, McCormick MC, Finn PW, Perkins DL, Rifas Shiman SL, Oken E, Kubzansky LD. Air Pollution, Neonatal Immune Responses, and Potential Joint Effects of Maternal Depression. Int J Environ Res Public Health 2021; 18:5062. [PMID: 34064967 PMCID: PMC8150899 DOI: 10.3390/ijerph18105062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 04/23/2021] [Accepted: 05/08/2021] [Indexed: 02/07/2023]
Abstract
Prenatal maternal exposure to air pollution may cause adverse health effects in offspring, potentially through altered immune responses. Maternal psychosocial distress can also alter immune function and may increase gestational vulnerability to air pollution exposure. We investigated whether prenatal exposure to air pollution is associated with altered immune responses in cord blood mononuclear cells (CBMCs) and potential modification by maternal depression in 463 women recruited in early pregnancy (1999-2001) into the Project Viva longitudinal cohort. We estimated black carbon (BC), fine particulate matter (PM2.5), residential proximity to major roadways, and near-residence traffic density, averaged over pregnancy. Women reported depressive symptoms in mid-pregnancy (Edinburgh Postnatal Depression Scale) and depression history by questionnaire. Immune responses were assayed by concentrations of three cytokines (IL-6, IL-10, and TNF-α), in unstimulated or stimulated (phytohemagglutinin (PHA), cockroach extract (Bla g 2), house dust mite extract (Der f 1)) CBMCs. Using multivariable linear or Tobit regression analyses, we found that CBMCs production of IL-6, TNF-a, and IL-10 were all lower in mothers exposed to higher levels of PM2.5 during pregnancy. A suggestive but not statistically significant pattern of lower cord blood cytokine concentrations from ever (versus never) depressed women exposed to PM2.5, BC, or traffic was also observed and warrants further study.
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Affiliation(s)
- Jill Hahn
- Department of Social and Behavioral Sciences, The Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; (M.C.M.); (L.D.K.)
| | - Diane R. Gold
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA;
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA;
| | - Brent A. Coull
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA;
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Marie C. McCormick
- Department of Social and Behavioral Sciences, The Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; (M.C.M.); (L.D.K.)
| | - Patricia W. Finn
- Division of Pulmonary, Critical Care, Sleep, and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - David L. Perkins
- Division of Nephrology, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Department of Surgery, University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Bioengineering, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Sheryl L. Rifas Shiman
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA 02215, USA; (S.L.R.S.); (E.O.)
| | - Emily Oken
- Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA 02215, USA; (S.L.R.S.); (E.O.)
| | - Laura D. Kubzansky
- Department of Social and Behavioral Sciences, The Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA; (M.C.M.); (L.D.K.)
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21
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Lombó M, Herráez P. The effects of endocrine disruptors on the male germline: an intergenerational health risk. Biol Rev Camb Philos Soc 2021; 96:1243-1262. [PMID: 33660399 DOI: 10.1111/brv.12701] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 12/22/2022]
Abstract
Environmental pollution is becoming one of the major concerns of society. Among the emerging contaminants, endocrine-disrupting chemicals (EDCs), a large group of toxicants, have been the subject of many scientific studies. Besides the capacity of these compounds to interfere with the endocrine system, they have also been reported to exert both genotoxic and epigenotoxic effects. Given that spermatogenesis is a coordinated process that requires the involvement of several steroid hormones and that entails deep changes in the chromatin, such as DNA compaction and epigenetic remodelling, it could be affected by male exposure to EDCs. A great deal of evidence highlights that these compounds have detrimental effects on male reproductive health, including alterations to sperm motility, sexual function, and gonad development. This review focuses on the consequences of paternal exposure to such chemicals for future generations, which still remain poorly known. Historically, spermatozoa have long been considered as mere vectors delivering the paternal haploid genome to the oocyte. Only recently have they been understood to harbour genetic and epigenetic information that plays a remarkable role during offspring early development and long-term health. This review examines the different modes of action by which the spermatozoa represent a key target for EDCs, and analyses the consequences of environmentally induced changes in sperm genetic and epigenetic information for subsequent generations.
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Affiliation(s)
- Marta Lombó
- Department of Animal Reproduction, INIA, Puerta de Hierro 18, Madrid, 28040, Spain
| | - Paz Herráez
- Department of Molecular Biology, Faculty of Biology, Universidad de León, Campus de Vegazana s/n, León, 24071, Spain
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22
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Masullo T, Biondo G, Natale MD, Tagliavia M, Bennici CD, Musco M, Ragusa MA, Costa S, Cuttitta A, Nicosia A. Gene Expression Changes after Parental Exposure to Metals in the Sea Urchin Affect Timing of Genetic Programme of Embryo Development. Biology (Basel) 2021; 10:biology10020103. [PMID: 33535713 PMCID: PMC7912929 DOI: 10.3390/biology10020103] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/20/2021] [Accepted: 01/30/2021] [Indexed: 12/14/2022]
Abstract
It is widely accepted that phenotypic traits can be modulated at the epigenetic level so that some conditions can affect the progeny of exposed individuals. To assess if the exposure of adult animals could result in effects on the offspring, the Mediterranean sea urchin and its well-characterized gene regulatory networks (GRNs) was chosen as a model. Adult animals were exposed to known concentrations of zinc and cadmium (both individually and in combination) for 10 days, and the resulting embryos were followed during the development. The oxidative stress occurring in parental gonads, embryo phenotypes and mortality, and the expression level of a set of selected genes, including members of the skeletogenic and endodermal GRNs, were evaluated. Increased oxidative stress at F0, high rates of developmental aberration with impaired gastrulation, in association to deregulation of genes involved in skeletogenesis (dri, hex, sm50, p16, p19, msp130), endodermal specification (foxa, hox11/13b, wnt8) and epigenetic regulation (kat2A, hdac1, ehmt2, phf8 and UBE2a) occurred either at 24 or 48 hpf. Results strongly indicate that exposure to environmental pollutants can affect not only directly challenged animals but also their progeny (at least F1), influencing optimal timing of genetic programme of embryo development, resulting in an overall impairment of developmental success.
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Affiliation(s)
- Tiziana Masullo
- Institute for Studies on the Mediterranean-National Research Council (ISMED-CNR), Detached Unit of Palermo, Via Filippo Parlatore 65, 90145 Palermo, Italy; (T.M.); (M.D.N.); (C.D.B.); (M.M.)
| | - Girolama Biondo
- Institute for Anthropic Impacts and Sustainability in Marine Environment-National Research Council (IAS-CNR), Detached Unit of Capo Granitola, Via del mare 3, 91021 Campobello di Mazara, Italy;
| | - Marilena Di Natale
- Institute for Studies on the Mediterranean-National Research Council (ISMED-CNR), Detached Unit of Palermo, Via Filippo Parlatore 65, 90145 Palermo, Italy; (T.M.); (M.D.N.); (C.D.B.); (M.M.)
- Department of Earth and Marine Science (DiSTeM), University of Palermo, Via Archirafi 20, 90123 Palermo, Italy
| | - Marcello Tagliavia
- Institute for Biomedical Research and Innovation-National Research Council-(IRIB-CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy;
| | - Carmelo Daniele Bennici
- Institute for Studies on the Mediterranean-National Research Council (ISMED-CNR), Detached Unit of Palermo, Via Filippo Parlatore 65, 90145 Palermo, Italy; (T.M.); (M.D.N.); (C.D.B.); (M.M.)
| | - Marianna Musco
- Institute for Studies on the Mediterranean-National Research Council (ISMED-CNR), Detached Unit of Palermo, Via Filippo Parlatore 65, 90145 Palermo, Italy; (T.M.); (M.D.N.); (C.D.B.); (M.M.)
| | - Maria Antonietta Ragusa
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze Ed. 16, 90128 Palermo, Italy; (M.A.R.); (S.C.)
| | - Salvatore Costa
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze Ed. 16, 90128 Palermo, Italy; (M.A.R.); (S.C.)
| | - Angela Cuttitta
- Institute for Studies on the Mediterranean-National Research Council (ISMED-CNR), Detached Unit of Palermo, Via Filippo Parlatore 65, 90145 Palermo, Italy; (T.M.); (M.D.N.); (C.D.B.); (M.M.)
- Correspondence: (A.C.); (A.N.)
| | - Aldo Nicosia
- Institute for Biomedical Research and Innovation-National Research Council-(IRIB-CNR), Via Ugo La Malfa 153, 90146 Palermo, Italy;
- Correspondence: (A.C.); (A.N.)
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23
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Zipple MN, Altmann J, Campos FA, Cords M, Fedigan LM, Lawler RR, Lonsdorf EV, Perry S, Pusey AE, Stoinski TS, Strier KB, Alberts SC. Maternal death and offspring fitness in multiple wild primates. Proc Natl Acad Sci U S A 2021; 118:e2015317118. [PMID: 33443206 PMCID: PMC7821045 DOI: 10.1073/pnas.2015317118] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Primate offspring often depend on their mothers well beyond the age of weaning, and offspring that experience maternal death in early life can suffer substantial reductions in fitness across the life span. Here, we leverage data from eight wild primate populations (seven species) to examine two underappreciated pathways linking early maternal death and offspring fitness that are distinct from direct effects of orphaning on offspring survival. First, we show that, for five of the seven species, offspring face reduced survival during the years immediately preceding maternal death, while the mother is still alive. Second, we identify an intergenerational effect of early maternal loss in three species (muriquis, baboons, and blue monkeys), such that early maternal death experienced in one generation leads to reduced offspring survival in the next. Our results have important implications for the evolution of slow life histories in primates, as they suggest that maternal condition and survival are more important for offspring fitness than previously realized.
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Affiliation(s)
| | - Jeanne Altmann
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544
- Institute of Primate Research, National Museums of Kenya, 00502 Nairobi, Kenya
| | - Fernando A Campos
- Department of Anthropology, University of Texas at San Antonio, San Antonio, TX 78249
| | - Marina Cords
- Department of Ecology, Evolution, and Environmental Biology, Columbia University, New York, NY 10027
| | - Linda M Fedigan
- Department of Anthropology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Richard R Lawler
- Department of Sociology and Anthropology, James Madison University, Harrisonburg, VA 22807
| | | | - Susan Perry
- Department of Anthropology, University of California, Los Angeles, CA 90095
| | - Anne E Pusey
- Department of Evolutionary Anthropology, Duke University, Durham, NC 27710
| | - Tara S Stoinski
- The Dian Fossey Gorilla Fund International, Atlanta, GA 30315
| | - Karen B Strier
- Department of Anthropology, University of Wisconsin-Madison, Madison, WI 53706
| | - Susan C Alberts
- Department of Biology, Duke University, Durham, NC 27708;
- Institute of Primate Research, National Museums of Kenya, 00502 Nairobi, Kenya
- Department of Evolutionary Anthropology, Duke University, Durham, NC 27710
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24
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Hagen R, Vitali V, Catania F. Cross-Generational Effects and Non-random Developmental Response to Temperature Variation in Paramecium. Front Cell Dev Biol 2020; 8:584219. [PMID: 33195230 PMCID: PMC7606892 DOI: 10.3389/fcell.2020.584219] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/30/2020] [Indexed: 12/16/2022] Open
Abstract
Unicellular organisms such as ciliates are largely neglected in research on adaptive developmental plasticity, although their nuclear dualism offers ideal circumstances to study development outside an embryonic context. Here, we gain first insights into the ability of the ciliate Paramecium to develop potentially adaptive phenotypic changes in response to early-life adversity. We show that, upon exposure to unconventional culture temperatures, germ line-to-soma differentiation gives rise to coordinated molecular changes that may help attune the number of functional gene copies to the new external conditions. The non-random somatic heterogeneity that developmental plasticity generates is largely epigenetically controlled, shaped by the parental experience, and may prompt a stress response. These findings establish Paramecium as a new model system to study the molecular basis and evolutionary significance of developmental plasticity. In echoing previous indications in mammals, they call for an incorporation of intergenerational effects in adaptation studies.
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Affiliation(s)
- Rebecca Hagen
- Department of Biology, Institute for Evolution and Biodiversity, University of Münster, Münster, Germany
| | - Valerio Vitali
- Department of Biology, Institute for Evolution and Biodiversity, University of Münster, Münster, Germany
| | - Francesco Catania
- Department of Biology, Institute for Evolution and Biodiversity, University of Münster, Münster, Germany
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25
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Abstract
The view of maternal effects (nongenetic maternal environmental influence on offspring phenotype) has changed from one of distracting complications in evolutionary genetics to an important evolutionary mechanism for improving offspring fitness. Recent studies have shown that maternal effects act as an adaptive mechanism to prepare offspring for stressful environments. Although research into the magnitude of maternal effects is abundant, the molecular mechanisms of maternal influences on offspring phenotypic variation are not fully understood. Despite recent work identifying DNA methylation as a potential mechanism of nongenetic inheritance, currently proposed links between DNA methylation and parental effects are indirect and primarily involve genomic imprinting. We combined a factorial breeding design and gene-targeted sequencing methods to assess inheritance of methylation during early life stages at 14 genes involved in growth, development, metabolism, stress response, and immune function of Chinook salmon (Oncorhynchus tshawytscha). We found little evidence for additive or nonadditive genetic effects acting on methylation levels during early development; however, we detected significant maternal effects. Consistent with conventional maternal effect data, maternal effects on methylation declined through development and were replaced with nonadditive effects when offspring began exogenous feeding. We mapped methylation at individual CpG sites across the selected candidate genes to test for variation in site-specific methylation profiles and found significant maternal effects at selected CpG sites that also declined with development stage. While intergenerational inheritance of methylated DNA is controversial, we show that CpG-specific methylation may function as an underlying molecular mechanism for maternal effects, with important implications for offspring fitness.
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Affiliation(s)
- Clare J Venney
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada
| | - Oliver P Love
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
| | - Ellen Jane Drown
- Yellow Island Aquaculture Ltd., Campbell River, British Columbia, Canada
| | - Daniel D Heath
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, Ontario, Canada.,Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
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26
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Xu N, Lei L, Lin Y, Ju LS, Morey TE, Gravenstein N, Yang J, Martynyuk AE. A Methyltransferase Inhibitor (Decitabine) Alleviates Intergenerational Effects of Paternal Neonatal Exposure to Anesthesia With Sevoflurane. Anesth Analg 2020; 131:1291-1299. [PMID: 32925350 PMCID: PMC7593836 DOI: 10.1213/ane.0000000000005097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Neonatal exposure to sevoflurane induces neurobehavioral and neuroendocrine abnormalities in exposed male rats (generation F0) and neurobehavioral, but not neuroendocrine, abnormalities in their male, but not female, offspring (generation F1). These effects of sevoflurane are accompanied by a hypermethylated neuron-specific K-2Cl (Kcc2) Cl exporter gene in the F0 spermatozoa and the F1 male hypothalamus, while the gene's expression is reduced in the F0 and F1 hypothalamus. We investigated whether inhibition of deoxyribonucleic acid methyltransferases (DNMTs) before paternal sevoflurane exposure could alleviate the anesthetic's F0 and F1 effects. METHODS Sprague-Dawley male rats were anesthetized with 2.1% sevoflurane for 5 hours on postnatal day (P) 5 and mated with control females on P90 to generate offspring. The nonselective DNMT inhibitor decitabine (0.5 mg/kg, intraperitoneally) was administered 30 minutes before sevoflurane exposure. The F0 and F1 male rats were evaluated in in vivo and in vitro tests in adulthood. RESULTS Paternal exposure to sevoflurane induced impaired prepulse inhibition of the acoustic startle response and exacerbated corticosterone responses to stress in F0 males and impaired prepulse inhibition of the startle responses in F1 males. These effects were accompanied in both generations by reduced and increased expressions of hypothalamic Kcc2 and Dnmt3a/b, respectively. Decitabine deterred the effects of paternal exposure to sevoflurane in F0 and F1 males. CONCLUSIONS These results suggest that similar decitabine-sensitive mechanisms regulating expression of multiple genes are involved in the mediation of neurobehavioral abnormalities in sires neonatally exposed to sevoflurane and in their future unexposed male offspring.
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Affiliation(s)
- Ning Xu
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Lei Lei
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Yunan Lin
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Ling-Sha Ju
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Timothy E. Morey
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
| | - Nikolaus Gravenstein
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
- McKnight Brain Institute, University of Florida College of Medicine, Gainesville, Florida
| | - Jianjun Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Anatoly E. Martynyuk
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
- McKnight Brain Institute, University of Florida College of Medicine, Gainesville, Florida
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27
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Sánchez-Tójar A, Lagisz M, Moran NP, Nakagawa S, Noble DWA, Reinhold K. The jury is still out regarding the generality of adaptive 'transgenerational' effects. Ecol Lett 2020; 23:1715-1718. [PMID: 32844521 DOI: 10.1111/ele.13479] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/02/2020] [Accepted: 01/23/2020] [Indexed: 12/30/2022]
Abstract
A recent meta-analysis concluded, 'transgenerational effects are widespread, strong and persistent'. We identify biases in the literature search, data and analyses, questioning that conclusion. Re-analyses indicate few studies actually tested transgenerational effects - making it challenging to disentangle condition-transfer from anticipatory parental effects, and providing little insight into the underlying mechanisms.
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Affiliation(s)
| | - Malgorzata Lagisz
- Evolution & Ecology Research Centre and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Nicholas P Moran
- Department of Evolutionary Biology, Bielefeld University, Bielefeld, Germany
| | - Shinichi Nakagawa
- Evolution & Ecology Research Centre and School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Daniel W A Noble
- Division of Ecology and Evolution, Research School of Biology, The Australian National University, Canberra, Australia
| | - Klaus Reinhold
- Department of Evolutionary Biology, Bielefeld University, Bielefeld, Germany
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28
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Schellong K, Melchior K, Ziska T, Rancourt RC, Henrich W, Plagemann A. Maternal but Not Paternal High-Fat Diet (HFD) Exposure at Conception Predisposes for 'Diabesity' in Offspring Generations. Int J Environ Res Public Health 2020; 17:E4229. [PMID: 32545776 DOI: 10.3390/ijerph17124229] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 01/02/2023]
Abstract
While environmental epigenetics mainly focuses on xenobiotic endocrine disruptors, dietary composition might be one of the most important environmental exposures for epigenetic modifications, perhaps even for offspring generations. We performed a large-scale rat study on key phenotypic consequences from parental (F0) high-caloric, high-fat diet (HFD) food intake, precisely and specifically at mating/conception, focusing on ‘diabesity’ risk in first- (F1) and second- (F2) generation offspring of both sexes. F0 rats (maternal or paternal, respectively) received HFD overfeeding, starting six weeks prior to mating with normally fed control rats. The maternal side F1 offspring of both sexes developed a ‘diabesity’ predisposition throughout life (obesity, hyperleptinemia, hyperglycemia, insulin resistance), while no respective alterations occurred in the paternal side F1 offspring, neither in males nor in females. Mating the maternal side F1 females with control males under standard feeding conditions led, again, to a ‘diabesity’ predisposition in the F2 generation, which, however, was less pronounced than in the F1 generation. Our observations speak in favor of the critical impact of maternal but not paternal metabolism around the time frame of reproduction for offspring metabolic health over generations. Such fundamental phenotypic observations should be carefully considered in front of detailed molecular epigenetic approaches on eventual mechanisms.
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29
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Ly L, Chan D, Landry M, Angle C, Martel J, Trasler J. Impact of mothers' early life exposure to low or high folate on progeny outcome and DNA methylation patterns. Environ Epigenet 2020; 6:dvaa018. [PMID: 33240529 PMCID: PMC7673481 DOI: 10.1093/eep/dvaa018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/03/2020] [Accepted: 09/19/2020] [Indexed: 05/14/2023]
Abstract
The dynamic patterning of DNA and histone methylation during oocyte development presents a potentially susceptible time for epigenetic disruption due to early life environmental exposure of future mothers. We investigated whether maternal exposure to folic acid deficient and supplemented diets starting in utero could affect oocytes and cause adverse developmental and epigenetic effects in next generation progeny. Female BALB/c mice (F0) were placed on one of four amino acid defined diets for 4 weeks before pregnancy and throughout gestation and lactation: folic acid control (rodent recommended daily intake; Ctrl), 7-fold folic acid deficient, 10-fold folic acid supplemented or 20-fold folic acid supplemented diets. F1 female pups were weaned onto Ctrl diets, mated to produce the F2 generation and the F2 offspring were examined at E18.5 for developmental and epigenetic abnormalities. Resorption rates were increased and litter sizes decreased amongst F2 E18.5-day litters in the 20-fold folic acid supplemented group. Increases in abnormal embryo outcomes were observed in all three folic acid deficient and supplemented groups. Subtle genome-wide DNA methylation alterations were found in the placentas and brains of F2 offspring in the 7-fold folic acid deficient , 10-fold folic acid supplemented and 20-fold folic acid supplemented groups; in contrast, global and imprinted gene methylation were not affected. The findings show that early life female environmental exposures to both low and high folate prior to oocyte maturation can compromise oocyte quality, adversely affecting offspring of the next generation, in part by altering DNA methylation patterns.
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Affiliation(s)
- Lundi Ly
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Donovan Chan
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Mylène Landry
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Camille Angle
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada
| | - Josée Martel
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Jacquetta Trasler
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Pharmacology & Therapeutics, McGill University, Montreal, QC, Canada
- Department of Pediatrics, McGill University, Montreal, QC, Canada
- Correspondence address. Research Institute of the McGill University Health Centre, 1001 Boulevard Décarie, Block E.M.0.3211, Montreal, QC, Canada H4A 3J1. Tel: +1-514-934-1934 (ext. 25235); Fax: +1-514-933-9673; E-mail:
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30
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Eisenberg DTA, Rej PH, Duazo P, Carba D, Hayes MG, Kuzawa CW. Testing for paternal influences on offspring telomere length in a human cohort in the Philippines. Am J Phys Anthropol 2019; 171:520-528. [PMID: 31845317 DOI: 10.1002/ajpa.23983] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Telomeres, emerging biomarkers of aging, are comprised of DNA repeats located at chromosomal ends that shorten with cellular replication and age in most human tissues. In contrast, spermatocyte telomeres lengthen with age. These changes in telomere length (TL) appear to be heritable, as older paternal ages of conception (PAC) predict longer offspring TL. Mouse-model studies raise questions about the potential for effects of paternal experiences on human offspring TL, as they suggest that smoking, inflammation, DNA damage, and stressors all shorten sperm TL. Here, we examined whether factors from the paternal environment predict offspring TL as well as interact with PAC to predict offspring TL. MATERIALS AND METHODS Using data from the Philippines, we tested if smoking, psychosocial stressors, or shorter knee height (a measure of early life adversity) predict shorter offspring TL. We also tested if these interacted with PAC in predicting offspring TL. RESULTS While we did not find the predicted associations, we observed a trend toward fathers with shorter knee height having offspring with longer TL. In addition, we found that knee height interacted with PAC to predict offspring TL. Specifically, fathers with shorter knee heights showed a stronger positive effect of PAC on offspring TL. DISCUSSION While the reasons for these associations remain uncertain, shorter knee height is characteristic of earlier puberty. Since spermatocyte TL increases with the production of sperm, we speculate that individuals with earlier puberty, and its concomitant commencement of production of sperm, had more time to accumulate longer sperm telomeres.
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Affiliation(s)
- Dan T A Eisenberg
- Department of Anthropology, University of Washington, Seattle, Washington.,Center for Studies in Demography and Ecology, University of Washington, Seattle, Washington
| | - Peter H Rej
- Department of Anthropology, University of Washington, Seattle, Washington
| | - Paulita Duazo
- USC-Office of Population Studies Foundation, Inc., University of San Carlos, Cebu City, Philippines
| | - Delia Carba
- USC-Office of Population Studies Foundation, Inc., University of San Carlos, Cebu City, Philippines
| | - M Geoffrey Hayes
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL.,Center for Genetic Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL.,Department of Anthropology, Northwestern University, Chicago, IL
| | - Christopher W Kuzawa
- Department of Anthropology, Northwestern University, Chicago, IL.,Institute for Policy Research, Northwestern University, Chicago, IL
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31
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George HCPH, Miles G, Bemrose J, White A, Bond MN, Cameron TC. Intergenerational effects of CO 2-induced stream acidification in the Trinidadian guppy ( Poecilia reticulata). Ecol Evol 2019; 9:12836-12845. [PMID: 31788218 PMCID: PMC6875657 DOI: 10.1002/ece3.5761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 12/20/2022] Open
Abstract
Rising atmospheric carbon dioxide levels are driving decreases in aquatic pH. As a result, there has been a surge in the number of studies examining the impact of acidification on aquatic fauna over the past decade. Thus far, both positive and negative impacts on the growth of fish have been reported, creating a disparity in results. Food availability and single-generation exposure have been proposed as some of the reasons for these variable results, where unrealistically high food treatments lead to fish overcoming the energetic costs associated with acclimating to decreased pH. Likewise, exposure of fish to lower pH for only one generation may not capture the likely ecological response to acidification that wild populations might experience over two or more generations. Here we compare somatic growth rates of laboratory populations of the Trinidadian guppy (Poecilia reticulata) exposed to pH levels that represent the average and lowest levels observed in streams in its native range. Specifically, we test the role of maternal acclimation and resource availability on the response of freshwater fishes to acidification. Acidification had a negative impact on growth at more natural, low food treatments. With high food availability, fish whose mothers were acclimated to the acidified treatment showed no reduction in growth, compared to controls. Compensatory growth was observed in both control-acidified (maternal-natal environment) and acidified-control groups, where fish that did not experience intergenerational effects achieved the same size in response to acidification as those that did, after an initial period of stunted growth. These results suggest that future studies on the effects of shifting mean of aquatic pH on fishes should take account of intergenerational effects and compensatory growth, as otherwise effects of acidification may be overestimated.
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Affiliation(s)
| | - George Miles
- School of Life SciencesUniversity of EssexColchesterUK
| | - James Bemrose
- School of Life SciencesUniversity of EssexColchesterUK
| | - Amelia White
- School of Life SciencesUniversity of EssexColchesterUK
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32
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Thayer ZM, Sweetman CA. How maternal adversity impacts offspring. eLife 2019; 8:51206. [PMID: 31553306 PMCID: PMC6760968 DOI: 10.7554/elife.51206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 09/20/2019] [Indexed: 11/14/2022] Open
Abstract
Adversities experienced by female baboons early in life can affect the survival of their offspring years later.
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Affiliation(s)
- Zaneta M Thayer
- Department of Anthropology, Dartmouth College, Hanover, United States.,Ecology, Evolution, Environment and Society Program, Dartmouth College, Hanover, United States
| | - Chlöe A Sweetman
- Department of Anthropology, Dartmouth College, Hanover, United States.,Ecology, Evolution, Environment and Society Program, Dartmouth College, Hanover, United States
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33
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Zipple MN, Archie EA, Tung J, Altmann J, Alberts SC. Intergenerational effects of early adversity on survival in wild baboons. eLife 2019; 8:e47433. [PMID: 31549964 PMCID: PMC6759315 DOI: 10.7554/elife.47433] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/06/2019] [Indexed: 01/09/2023] Open
Abstract
Early life adversity can affect an individual's health, survival, and fertility for many years after the adverse experience. Whether early life adversity also imposes intergenerational effects on the exposed individual's offspring is not well understood. We fill this gap by leveraging prospective, longitudinal data on a wild, long-lived primate. We find that juveniles whose mothers experienced early life adversity exhibit high mortality before age 4, independent of the juvenile's own experience of early adversity. These juveniles often preceded their mothers in death by 1 to 2 years, indicating that high adversity females decline in their ability to raise offspring near the end of life. While we cannot exclude direct effects of a parent's environment on offspring quality (e.g., inherited epigenetic changes), our results are completely consistent with a classic parental effect, in which the environment experienced by a parent affects its future phenotype and therefore its offspring's phenotype.
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Affiliation(s)
| | - Elizabeth A Archie
- Department of Biological SciencesUniversity of Notre DameSouth BendUnited States
- Institute of Primate Research, National Museums of KenyaNairobiKenya
| | - Jenny Tung
- Department of BiologyDuke UniversityDurhamUnited States
- Institute of Primate Research, National Museums of KenyaNairobiKenya
- Department of Evolutionary AnthropologyDuke UniversityDurhamUnited States
- Duke Population Research InstituteDuke UniversityDurhamUnited States
| | - Jeanne Altmann
- Institute of Primate Research, National Museums of KenyaNairobiKenya
- Department of Ecology and Evolutionary BiologyPrinceton UniversityPrincetonUnited States
| | - Susan C Alberts
- Department of BiologyDuke UniversityDurhamUnited States
- Institute of Primate Research, National Museums of KenyaNairobiKenya
- Department of Evolutionary AnthropologyDuke UniversityDurhamUnited States
- Duke Population Research InstituteDuke UniversityDurhamUnited States
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Moraes TGV, Pishnamazi A, Wenger II, Renema RA, Zuidhof MJ. Energy and protein dilution in broiler breeder pullet diets reduced offspring body weight and yield. Poult Sci 2019; 98:2555-2561. [PMID: 30690576 PMCID: PMC6527511 DOI: 10.3382/ps/pey603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 01/15/2019] [Indexed: 11/20/2022] Open
Abstract
The objective of the current research was to evaluate transgenerational effects of maternal dietary energy and protein on growth, efficiency, and yield of broiler offspring. A factorial arrangement of treatments consisting of high and low ME and CP levels fed during the rearing and laying phases was used. The study was a final 2 × 2 × 2 × 2 factorial arrangement of treatments, including broiler sex. Ross 708 broiler breeder pullets (n = 933) were fed diets containing 2,736 (HEREAR) or 2,528 kcal/kg ME (LEREAR) with either 15.3% (HPREAR) or 13.7% CP (LPREAR). From 25 wk, dams were fed a 15% CP laying diet containing 2,900 (HELAY) or 2,800 kcal/kg ME (LELAY). Following artificial insemination of the dams at 35 wk, eggs were collected for 1 wk, incubated, and pedigree hatched to preserve maternal identity. Broiler offspring were placed sex-separately into 32 pens, according to laying phase maternal treatments, with rearing maternal treatments nested within pens. Individual BW and pen level feed intake were recorded weekly. Broilers were processed at 40 d of age to evaluate yield. Maternal diet effects on offspring BW were sex dependent and transient. Female LPREAR × LELAY broilers had lower pectoralis major and carcass yield than HPREAR × LELAY females. Male HPREAR × HELAY broilers had increased breast yield (19.8%) compared with 18.4% in HPREAR × LELAY broilers. Carcass yield was lower in LEREAR × HPREAR broilers (63.7%) compared with HEREAR × HPREAR broilers (64.9%). LEREAR × HPREAR dams had the lowest ME to CP ratio (E: P) diets and highest rearing phase CP intake. Maternal diet did not influence offspring FCR. The most consistent contributor to increased BW was higher maternal dietary CP and ME during rearing. Low ME maternal laying phase diets increased BW of male offspring more consistently than of female offspring. Maternal nutrition also influenced broiler yield, and is thus economically important. Energy and protein dilution in broiler breeder pullet diets may have detrimental effects on offspring performance.
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Affiliation(s)
- T G V Moraes
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - A Pishnamazi
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - I I Wenger
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - R A Renema
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - M J Zuidhof
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
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Hahn J, Gold DR, Coull BA, McCormick MC, Finn PW, Perkins DL, Rich-Edwards JW, Rifas Shiman SL, Oken E, Kubzansky LD. Prenatal Maternal Depression and Neonatal Immune Responses. Psychosom Med 2019; 81:320-7. [PMID: 31048634 DOI: 10.1097/PSY.0000000000000686] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The aim of the study was to examine the association of lifetime maternal depression with regulation of immune responses in the infant, measured by cytokine levels and lymphocyte proliferation (LP) in cord blood mononuclear cells collected at delivery. METHODS We studied women recruited in early pregnancy into the Project Viva longitudinal cohort who had cord blood assayed after delivery (N = 463). Women reported about depressive symptoms in midpregnancy (Edinburgh Postnatal Depression Scale) and depression history by questionnaire. Immune responses were assayed by an index of LP, and concentrations of five cytokines (interleukin [IL]-6, IL-10, IL-13, tumor necrosis tumor necrosis factor factor α, and interferon γ) after incubation of cord blood mononuclear cells either in medium alone or stimulated with phytohemagglutinin (PHA), cockroach extract, or house dust mite extract. We examined associations of maternal depression with these sets of cytokine measures using multivariable linear or tobit regression analyses. RESULTS After adjustment for confounders (mother's age, race/ethnicity, education, household income, season of birth, and child sex), levels of IL-10 after stimulation with cockroach or dust mite allergen were lower in cord blood from ever versus never depressed women, and a similar trend was evident in IL-10 stimulated with PHA (percentage difference: cockroach extract = -41.4, p = .027; house dust mite extract = 1-36.0, p = .071; PHA = -24.2, p = .333). No significant differences were seen in levels of other cytokines or LP. CONCLUSIONS Maternal depression is associated with offspring immune responses at birth, which may have implications for later life atopic risk or immune function.
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Chapman SN, Pettay JE, Lummaa V, Lahdenperä M. Limits to Fitness Benefits of Prolonged Post-reproductive Lifespan in Women. Curr Biol 2019; 29:645-650.e3. [PMID: 30744967 DOI: 10.1016/j.cub.2018.12.052] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/17/2018] [Accepted: 12/19/2018] [Indexed: 11/16/2022]
Abstract
Recent advances in medicine and life-expectancy gains have fueled multidisciplinary research into the limits of human lifespan [1-3]. Ultimately, how long humans can live for may depend on selection favoring extended longevity in our evolutionary past [4]. Human females have an unusually extended post-reproductive lifespan, which has been explained by the fitness benefits provided from helping to raise grandchildren following menopause [5, 6]. However, formal tests of whether such grandmothering benefits wane with grandmother age and explain the observed length of post-reproductive lifespan are missing. This is critical for understanding prevailing selection pressures on longevity but to date has been overlooked as a possible mechanism driving the evolution of lifespan. Here, we use extensive data from pre-industrial humans to show that fitness gains from grandmothering are dependent on grandmother age, affecting selection on the length of post-reproductive lifespan. We find both opportunities and ability to help grandchildren declined with age, while the hazard of death of women increased greatly in their late 60s and 70s compared to menopausal ages, together implying waning selection on subsequent longevity. The presence of maternal grandmothers aged 50-75 increased grandchild survival after weaning, confirming the fitness advantage of post-reproductive lifespan. However, co-residence with paternal grandmothers aged 75+ was detrimental to grandchild survival, with those grandmothers close to death and presumably in poorer health particularly associated with lower grandchild survival. The age limitations of gaining inclusive fitness from grandmothering suggests that grandmothering can select for post-reproductive longevity only up to a certain point.
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Affiliation(s)
- Simon N Chapman
- Department of Biology, University of Turku, 20014 Turku, Finland
| | - Jenni E Pettay
- Department of Biology, University of Turku, 20014 Turku, Finland
| | - Virpi Lummaa
- Department of Biology, University of Turku, 20014 Turku, Finland.
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Ly L, Chan D, Aarabi M, Landry M, Behan NA, MacFarlane AJ, Trasler J. Intergenerational impact of paternal lifetime exposures to both folic acid deficiency and supplementation on reproductive outcomes and imprinted gene methylation. Mol Hum Reprod 2018; 23:461-477. [PMID: 28535307 DOI: 10.1093/molehr/gax029] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 05/19/2017] [Indexed: 12/24/2022] Open
Abstract
STUDY QUESTION Do paternal exposures to folic acid deficient (FD), and/or folic acid supplemented (FS) diets, throughout germ cell development adversely affect male germ cells and consequently offspring health outcomes? SUMMARY ANSWER Male mice exposed over their lifetimes to both FD and FS diets showed decreased sperm counts and altered imprinted gene methylation with evidence of transmission of adverse effects to the offspring, including increased postnatal-preweaning mortality and variability in imprinted gene methylation. WHAT IS KNOWN ALREADY There is increasing evidence that disruptions in male germ cell epigenetic reprogramming are associated with offspring abnormalities and intergenerational disease. The fetal period is the critical time of DNA methylation pattern acquisition for developing male germ cells and an adequate supply of methyl donors is required. In addition, DNA methylation patterns continue to be remodeled during postnatal spermatogenesis. Previous studies have shown that lifetime (prenatal and postnatal) folic acid deficiency can alter the sperm epigenome and increase the incidence of fetal morphological abnormalities. STUDY DESIGN, SIZE, DURATION Female BALB/c mice (F0) were placed on one of four amino-acid defined diets for 4 weeks before pregnancy and throughout pregnancy and lactation: folic acid control (Ctrl; 2 mg/kg), 7-fold folic acid deficient (7FD; 0.3 mg/kg), 10-fold high FS (10FS, 20 mg/kg) or 20-fold high FS (20FS, 40 mg/kg) diets. F1 males were weaned to their respective prenatal diets to allow for diet exposure during all windows of germline epigenetic reprogramming: the erasure, re-establishment and maintenance phases. PARTICIPANTS/MATERIALS, SETTINGS, METHODS F0 females were mated with chow-fed males to produce F1 litters whose germ cells were exposed to the diets throughout embryonic development. F1 males were subsequently mated with chow-fed female mice. Two F2 litters, unexposed to the experimental diets, were generated from each F1 male; one litter was collected at embryonic day (E)18.5 and one delivered and followed postnatally. DNA methylation at a global level and at the differentially methylated regions of imprinted genes (H19, Imprinted Maternally Expressed Transcript (Non-Protein Coding)-H19, Small Nuclear Ribonucleoprotein Polypeptide N-Snrpn, KCNQ1 Opposite Strand/Antisense Transcript 1 (Non-Protein Coding)-Kcnq1ot1, Paternally Expressed Gene 1-Peg1 and Paternally Expressed Gene 3-Peg3) was assessed by luminometric methylation analysis and bisulfite pyrosequencing, respectively, in F1 sperm, F2 E18.5 placenta and F2 E18.5 brain cortex. MAIN RESULTS AND THE ROLE OF CHANCE F1 males exhibited lower sperm counts following lifetime exposure to both folic acid deficiency and the highest dose of folic acid supplementation (20FS), (both P < 0.05). Post-implantation losses were increased amongst F2 E18.5 day litters from 20FS exposed F1 males (P < 0.05). F2 litters derived from both 7FD and 20FS exposed F1 males had significantly higher postnatal-preweaning pup death (both P < 0.05). Sperm from 10FS exposed males had increased variance in methylation across imprinted gene H19, P < 0.05; increased variance at a few sites within H19 was also found for the 7FD and 20FS groups (P < 0.05). While the 20FS diet resulted in inter-individual alterations in methylation across the imprinted genes Snrpn and Peg3 in F2 E18.5 placenta, ≥50% of individual sites tested in Peg1 and/or Peg3 were affected in the 7FD and 10FS groups. Inter-individual alterations in Peg1 methylation were found in F2 E18.5 day 10FS group brain cortex (P < 0.05). LARGE SCALE DATA Not applicable. LIMITATIONS REASONS FOR CAUTION The cause of the increase in postnatal-preweaning mortality was not investigated post-mortem. Further studies are required to understand the mechanisms underlying the adverse effects of folic acid deficiency and supplementation on developing male germ cells. Genome-wide DNA and histone methylome studies as well as gene expression studies are required to better understand the links between folic acid exposures, an altered germ cell epigenome and offspring outcomes. WIDER IMPLICATIONS OF THE FINDINGS The findings of this study provide further support for paternally transmitted environmental effects. The results indicate that both folic acid deficiency and high dose supplementation can be detrimental to germ cell development and reproductive fitness, in part by altering DNA methylation in sperm. STUDY FUNDING AND COMPETING INTERESTS This study was supported by a grant to J.M.T. from the Canadian Institutes of Health Research (CIHR #89944). The authors declare they have no conflicts of interest.
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Affiliation(s)
- Lundi Ly
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Donovan Chan
- Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Mahmoud Aarabi
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Mylène Landry
- Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1
| | - Nathalie A Behan
- Nutrition Research Division, Health Canada, 251 Promenade Sir Frederick Banting Driveway, Ottawa, ON, Canada K1A 0K9
| | - Amanda J MacFarlane
- Nutrition Research Division, Health Canada, 251 Promenade Sir Frederick Banting Driveway, Ottawa, ON, Canada K1A 0K9
| | - Jacquetta Trasler
- Department of Human Genetics, McGill University, 1205 Dr. Penfield Avenue, Montréal, QC, Canada H3A 1B1.,Child Health and Human Development Program (CHHD), Research Institute of McGill University Health Centre, 1001 Decarie Blvd, Westmount, QC, Canada H4A 3J1.,Pharmacology & Therapeutics, 3655 Prom. Sir William Osler, Montreal, QC, Canada H3G 1Y6
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Gibbs VK, Schwartz TS, Johnson MS, Patki A, Nagy TR, George BJ, Allison DB. No Significant Effect of Maternal Perception of the Food Environment on Reproductive Success or Pup Outcomes in C57BL/6J Mice. Obesity (Silver Spring) 2018; 26:723-729. [PMID: 29476611 PMCID: PMC5866215 DOI: 10.1002/oby.22141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/05/2018] [Accepted: 01/09/2018] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Prior work concerning maternal perception of the food environment suggests that perceived disparities in food resources resulted in reduced pup mass and dam reproductive success. This study attempted to replicate this result with increased sample size and additional measures. METHODS Female C57BL/6J mice (n = 160; 3 weeks old) were randomly assigned to either subject or peer and were pair housed in partitioned cages with olfactory and visual contact. After a 6-week maturation period on an energy-rich cafeteria diet, cages were randomly assigned to Control (subject and peer fed pelleted diet) or Treatment (subject fed pellets, peer fed cafeteria diet), and subjects were bred. After weaning, one pup from each sex per litter was reared to 5 months. RESULTS Treatment did not affect the number of births, pup size at birth, or the proportion of pups surviving to weaning (P > 0.09). Treatment did not affect dam body or fat mass at parturition (P > 0.22), but these measures were higher in some Treatment dams at weaning (P < 0.05). Smaller female pups were weaned from Treatment dams pregnant on the first breeding attempt (P = 0.01), but no other pup effects were observed (P > 0.07). CONCLUSIONS Exposure to food-environment disparity in this study did not replicate previous findings or affect pup growth after weaning.
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Affiliation(s)
- Victoria K. Gibbs
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Comprehensive Center for Healthy Aging, University of Alabama at Birmingham, Birmingham, Alabama, United States
- UAB Nathan Shock Center of Excellence, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Department of Biology, Birmingham-Southern College, Birmingham, Alabama, United States
| | - Tonia S. Schwartz
- Office of Energetics, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Department of Biological Sciences, Auburn University, Auburn, Alabama, United States
| | - Maria S. Johnson
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Amit Patki
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Tim R. Nagy
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Comprehensive Center for Healthy Aging, University of Alabama at Birmingham, Birmingham, Alabama, United States
- UAB Nathan Shock Center of Excellence, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Diabetes Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - Brandon J. George
- Office of Energetics, University of Alabama at Birmingham, Birmingham, Alabama, United States
| | - David B. Allison
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Comprehensive Center for Healthy Aging, University of Alabama at Birmingham, Birmingham, Alabama, United States
- UAB Nathan Shock Center of Excellence, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Diabetes Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Office of Energetics, University of Alabama at Birmingham, Birmingham, Alabama, United States
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, Alabama, United States
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Chapman SN, Pettay JE, Lummaa V, Lahdenperä M. Limited support for the X-linked grandmother hypothesis in pre-industrial Finland. Biol Lett 2018; 14:rsbl.2017.0651. [PMID: 29321245 DOI: 10.1098/rsbl.2017.0651] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/11/2017] [Indexed: 01/28/2023] Open
Abstract
The level of kin help often depends on the degree of relatedness between a helper and the helped. In humans, grandmother help is known to increase the survival of grandchildren, though this benefit can differ between maternal grandmothers (MGMs) and paternal grandmothers (PGMs) and between grandsons and granddaughters. The X-linked grandmother hypothesis posits that differential X-chromosome relatedness between grandmothers and their grandchildren is a leading driver of differential grandchild survival between grandmother lineages and grandchild sexes. We tested this hypothesis using time-event models on a large, multigenerational dataset from pre-industrial Finland. We found that the presence of an MGM increases grandson survival more than PGM presence, and that granddaughter survival is higher than that of grandsons in the presence of a PGM. However, there was no support for the key prediction that the presence of PGMs improves granddaughter survival more than that of MGMs, diminishing the overall support for the hypothesis. Our results call for alternative explanations for differences in the effects of maternal and paternal kin to grandchild survival in humans.
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Affiliation(s)
- Simon N Chapman
- Department of Biology, University of Turku, Turku 20014, Finland
| | - Jenni E Pettay
- Department of Biology, University of Turku, Turku 20014, Finland
| | - Virpi Lummaa
- Department of Biology, University of Turku, Turku 20014, Finland
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Lomanowska AM, Boivin M, Hertzman C, Fleming AS. Parenting begets parenting: A neurobiological perspective on early adversity and the transmission of parenting styles across generations. Neuroscience 2017. [PMID: 26386294 DOI: 10.1016/neuroscience.2015.09.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The developing brains of young children are highly sensitive to input from their social environment. Nurturing social experience during this time promotes the acquisition of social and cognitive skills and emotional competencies. However, many young children are confronted with obstacles to healthy development, including poverty, inappropriate care, and violence, and their enhanced sensitivity to the social environment means that they are highly susceptible to these adverse childhood experiences. One source of social adversity in early life can stem from parenting that is harsh, inconsistent, non-sensitive or hostile. Parenting is considered to be the cornerstone of early socio-emotional development and an adverse parenting style is associated with adjustment problems and a higher risk of developing mood and behavioral disorders. Importantly, there is a growing literature showing that an important predictor of parenting behavior is how parents, especially mothers, were parented themselves. In this review, we examine how adversity in early-life affects mothering behavior in later-life and how these effects may be perpetuated inter-generationally. Relying on studies in humans and animal models, we consider evidence for the intergenerational transmission of mothering styles. We then describe the psychological underpinnings of mothering, including responsiveness to young, executive function and affect, as well as the physiological mediators of mothering behavior, including hormones, brain regions and neurotransmitters, and we consider how development in these relevant domains may be affected by adversity experienced in early life. Finally, we explore how genes and early experience interact to predict mothering behavior, including the involvement of epigenetic mechanisms. Understanding how adverse parenting begets adverse parenting in the next generation is critical for designing interventions aimed at preventing this intergenerational cycle of early adversity.
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Affiliation(s)
- A M Lomanowska
- School of Psychology, Laval University, Quebec City, QC G1V 0A6, Canada; Centre de recherche de l'Institut universitaire en santé mentale de Québec, Quebec City, QC G1J 2G3, Canada; Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada.
| | - M Boivin
- School of Psychology, Laval University, Quebec City, QC G1V 0A6, Canada; Institute of Genetic, Neurobiological, and Social Foundations of Child Development, Tomsk State University, Tomsk, Russian Federation
| | - C Hertzman
- School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z9, Canada
| | - A S Fleming
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada; Fraser Mustard Institute for Human Development, University of Toronto, Toronto, ON M5S 1V6, Canada.
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Sopinka NM, Capelle PM, Semeniuk CAD, Love OP. Glucocorticoids in Fish Eggs: Variation, Interactions with the Environment, and the Potential to Shape Offspring Fitness. Physiol Biochem Zool 2016; 90:15-33. [PMID: 28051944 DOI: 10.1086/689994] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Wild and captive vertebrates face multiple stressors that all have the potential to induce chronic maternal stress (i.e., sustained, elevated plasma glucocorticoids), resulting in embryo exposure to elevated maternally derived glucocorticoids. In oviparous taxa such as fish, maternally derived glucocorticoids in eggs are known for their capacity to shape offspring phenotype. Using a variety of methodologies, scientists have quantified maternally derived levels of egg cortisol, the primary glucocorticoid in fishes, and examined the cascading effects of egg cortisol on progeny phenotype. Here we summarize and interpret the current state of knowledge on egg cortisol in fishes and the relationships linking maternal stress/state to egg cortisol and offspring phenotype/fitness. Considerable variation in levels of egg cortisol exists across species and among females within a species; this variation is hypothesized to be due to interspecific differences in reproductive life history and intraspecific differences in female condition. Outcomes of experimental studies manipulating egg cortisol vary both inter- and intraspecifically. Moreover, while exogenous elevation of egg cortisol (as a proxy for maternal stress) induces phenotypic changes commonly considered to be maladaptive (e.g., smaller offspring size), emerging work in other taxa suggests that there can be positive effects on fitness when the offspring's environment is taken into account. Investigations into (i) mechanisms by which egg cortisol elicits phenotypic change in offspring (e.g., epigenetics), (ii) maternal and offspring buffering capacity of cortisol, and (iii) factors driving natural variation in egg cortisol and how this variation affects offspring phenotype and fitness are all germane to discussions on egg glucocorticoids as signals of maternal stress.
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Clark MM, Blangero J, Dyer TD, Sobel EM, Sinsheimer JS. The Quantitative-MFG Test: A Linear Mixed Effect Model to Detect Maternal-Offspring Gene Interactions. Ann Hum Genet 2015; 80:63-80. [PMID: 26567478 DOI: 10.1111/ahg.12137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/11/2015] [Indexed: 12/18/2022]
Abstract
Maternal-offspring gene interactions, aka maternal-fetal genotype (MFG) incompatibilities, are neglected in complex diseases and quantitative trait studies. They are implicated in birth to adult onset diseases but there are limited ways to investigate their influence on quantitative traits. We present the quantitative-MFG (QMFG) test, a linear mixed model where maternal and offspring genotypes are fixed effects and residual correlations between family members are random effects. The QMFG handles families of any size, common or general scenarios of MFG incompatibility, and additional covariates. We develop likelihood ratio tests (LRTs) and rapid score tests and show they provide correct inference. In addition, the LRT's alternative model provides unbiased parameter estimates. We show that testing the association of SNPs by fitting a standard model, which only considers the offspring genotypes, has very low power or can lead to incorrect conclusions. We also show that offspring genetic effects are missed if the MFG modeling assumptions are too restrictive. With genome-wide association study data from the San Antonio Family Heart Study, we demonstrate that the QMFG score test is an effective and rapid screening tool. The QMFG test therefore has important potential to identify pathways of complex diseases for which the genetic etiology remains to be discovered.
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Affiliation(s)
- Michelle M Clark
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - John Blangero
- South Texas Diabetes and Obesity Institute, School of Medicine, University of Texas, Rio Grande Valley, Brownsville, TX, USA
| | - Thomas D Dyer
- South Texas Diabetes and Obesity Institute, School of Medicine, University of Texas, Rio Grande Valley, Brownsville, TX, USA
| | - Eric M Sobel
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Janet S Sinsheimer
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, CA, USA.,Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.,Department of Biomathematics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
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Lomanowska AM, Boivin M, Hertzman C, Fleming AS. Parenting begets parenting: A neurobiological perspective on early adversity and the transmission of parenting styles across generations. Neuroscience 2015; 342:120-139. [PMID: 26386294 DOI: 10.1016/j.neuroscience.2015.09.029] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 09/08/2015] [Accepted: 09/09/2015] [Indexed: 12/30/2022]
Abstract
The developing brains of young children are highly sensitive to input from their social environment. Nurturing social experience during this time promotes the acquisition of social and cognitive skills and emotional competencies. However, many young children are confronted with obstacles to healthy development, including poverty, inappropriate care, and violence, and their enhanced sensitivity to the social environment means that they are highly susceptible to these adverse childhood experiences. One source of social adversity in early life can stem from parenting that is harsh, inconsistent, non-sensitive or hostile. Parenting is considered to be the cornerstone of early socio-emotional development and an adverse parenting style is associated with adjustment problems and a higher risk of developing mood and behavioral disorders. Importantly, there is a growing literature showing that an important predictor of parenting behavior is how parents, especially mothers, were parented themselves. In this review, we examine how adversity in early-life affects mothering behavior in later-life and how these effects may be perpetuated inter-generationally. Relying on studies in humans and animal models, we consider evidence for the intergenerational transmission of mothering styles. We then describe the psychological underpinnings of mothering, including responsiveness to young, executive function and affect, as well as the physiological mediators of mothering behavior, including hormones, brain regions and neurotransmitters, and we consider how development in these relevant domains may be affected by adversity experienced in early life. Finally, we explore how genes and early experience interact to predict mothering behavior, including the involvement of epigenetic mechanisms. Understanding how adverse parenting begets adverse parenting in the next generation is critical for designing interventions aimed at preventing this intergenerational cycle of early adversity.
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Affiliation(s)
- A M Lomanowska
- School of Psychology, Laval University, Quebec City, QC G1V 0A6, Canada; Centre de recherche de l'Institut universitaire en santé mentale de Québec, Quebec City, QC G1J 2G3, Canada; Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada.
| | - M Boivin
- School of Psychology, Laval University, Quebec City, QC G1V 0A6, Canada; Institute of Genetic, Neurobiological, and Social Foundations of Child Development, Tomsk State University, Tomsk, Russian Federation
| | - C Hertzman
- School of Population and Public Health, University of British Columbia, Vancouver, BC V6T 1Z9, Canada
| | - A S Fleming
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON L5L 1C6, Canada; Fraser Mustard Institute for Human Development, University of Toronto, Toronto, ON M5S 1V6, Canada.
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Kye B, Mare RD. Intergenerational effects of shifts in women's educational distribution in South Korea: Transmission, differential fertility, and assortative mating. Soc Sci Res 2012; 41:1495-514. [PMID: 23017970 PMCID: PMC4075181 DOI: 10.1016/j.ssresearch.2012.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 02/20/2012] [Accepted: 05/10/2012] [Indexed: 05/14/2023]
Abstract
This study examines the intergenerational effects of changes in women's education in South Korea. We define intergenerational effects as changes in the distribution of educational attainment in an offspring generation associated with the changes in a parental generation. Departing from the previous approach in research on social mobility that has focused on intergenerational association, we examine the changes in the distribution of educational attainment across generations. Using a simulation method based on Mare and Maralani's recursive population renewal model, we examine how intergenerational transmission, assortative mating, and differential fertility influence intergenerational effects. The results point to the following conclusions. First, we find a positive intergenerational effect: improvement in women's education leads to improvement in daughter's education. Second, we find that the magnitude of intergenerational effects substantially depends on assortative marriage and differential fertility: assortative mating amplifies and differential fertility dampens the intergenerational effects. Third, intergenerational effects become bigger for the less educated and smaller for the better educated over time, which is a consequence of educational expansion. We compare our results with Mare and Maralani's original Indonesian study to illustrate how the model of intergenerational effects works in different socioeconomic circumstances.
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Affiliation(s)
- Bongoh Kye
- Kookmin University, Department of Sociology, Jeongneung Ro-77 Seoungbuk-Gu Seoul 136-702 Korea
- Corresponding author. Fax: +82 2 910 4429
| | - Robert D. Mare
- University of California – Los Angeles, Department of Sociology, 264 Haines Hall, Box 951551, Los Angeles, CA 90095-1551, United States
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Rickard IJ, Courtiol A, Prentice AM, Fulford AJC, Clutton-Brock TH, Lummaa V. Intergenerational effects of maternal birth season on offspring size in rural Gambia. Proc Biol Sci 2012; 279:4253-62. [PMID: 22896641 PMCID: PMC3441076 DOI: 10.1098/rspb.2012.1363] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 07/26/2012] [Indexed: 01/10/2023] Open
Abstract
Environmental conditions experienced in early life can influence an individual's growth and long-term health, and potentially also that of their offspring. However, such developmental effects on intergenerational outcomes have rarely been studied. Here we investigate intergenerational effects of early environment in humans using survey- and clinic-based data from rural Gambia, a population experiencing substantial seasonal stress that influences foetal growth and has long-term effects on first-generation survival. Using Fourier regression to model seasonality, we test whether (i) parental birth season has intergenerational consequences for offspring in utero growth (1982 neonates, born 1976-2009) and (ii) whether such effects have been reduced by improvements to population health in recent decades. Contrary to our predictions, we show effects of maternal birth season on offspring birth weight and head circumference only in recent maternal cohorts born after 1975. Offspring birth weight varied according to maternal birth season from 2.85 to 3.03 kg among women born during 1975-1984 and from 2.84 to 3.41 kg among those born after 1984, but the seasonality effect reversed between these cohorts. These results were not mediated by differences in maternal age or parity. Equivalent patterns were observed for offspring head circumference (statistically significant) and length (not significant), but not for ponderal index. No relationships were found between paternal birth season and offspring neonatal anthropometrics. Our results indicate that even in rural populations living under conditions of relative affluence, brief variation in environmental conditions during maternal early life may exert long-term intergenerational effects on offspring.
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Affiliation(s)
- Ian J Rickard
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.
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Abstract
Struening et al.1 demonstrated a widening disparity of low birthweight (LOB) rates among New York City health areas from 1980-1986, clearly a dynamic process. In contrast, the New York City Department of Health reported static citywide LOB rate in 1988-2008.2 Struening et al.1 is extended here at the health district level with mapping and regression analyses. Additionally, birthweight data are reported for babies born in 1998-2001 to a group of African-American and Dominican women in Upper Manhattan. The data reported in this paper indicate that both fetal programming of the mother herself (life course model) and stress during or shortly before pregnancy may play a role in LOB. Current stress may arise from past events. Intergenerational effects, thus, could arise from stresses on the grandmother and their residual impacts on the mother as well as new stresses on the mother as an adult. The average weight of babies born to the Upper Manhattan mothers who were born in 1970-1974 was 3,466 g, with 1.6% below 2,500 g; that of babies of mothers born in 1975-1979, 3,320 g, with 6% below 2,500 g. The latter group was born during the 1975-1979 housing destruction. Intergenerational impacts of that event may be reflected in this elevated rate of LOB. Health district maps of LOB incidence ranges show improvement from 1990-2000 and then deterioration in 2005 and 2008. Bivariate regressions of socioeconomic (SE) factors and LOB incidence showed many strong associations in 1990; but by 2000, the number and strength of these associations declined. In 1990, 2000, and 2008, black segregation was the SE factor most strongly associated with LOB. Black segregation and murder rate explained about 85% of the pattern of 1990 LOB. Regressing the 1970-1980 percent population change against the SE factors showed effects even in 2000. The 1990 murder rate and 1989 percentage of public assistance explained over half the 2008 LOB incidence pattern. The housing destruction of the 1970s continued to influence LOB incidence indirectly in 2008. The ability of community and individual to cope with current stressors may hinge on resilience status, which is shaped by past events and circumstances. The present interacts with the past in many ways. Serial displacement exemplifies this interaction of immense importance to public health.
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Affiliation(s)
- Deborah Wallace
- New York State Psychiatric Institute, New York, NY 10032, USA.
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Paltiel O, Yanetz R, Calderon-Margalit R, Manor O, Sharon N, Harlap S, Friedlander Y. Very high birth weight of offspring is associated with an increased risk of leukemia in their mothers: results of a population-based cohort study. Leuk Res 2008; 32:1709-14. [PMID: 18485477 PMCID: PMC2571958 DOI: 10.1016/j.leukres.2008.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2008] [Revised: 04/03/2008] [Accepted: 04/04/2008] [Indexed: 11/26/2022]
Abstract
Although the association between birth weight and childhood leukemia is well described, the relation between a child's birth weight and parental risk of leukemia is unknown. We linked data from the Jerusalem Perinatal Study to the Israel Cancer Registry to ascertain the incidence of leukemia in mothers and fathers in relation to their offspring's birth weight. Birth weight >or=4500 g in any of the offspring was associated with a >3-fold risk of leukemia in mothers, but not fathers. Potential mechanisms include shared exposures of high birth weight infants and their mothers, possibly to radiation or growth factors, or genetic pathways leading to both high birth weight and leukemia.
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Affiliation(s)
- Ora Paltiel
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel.
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