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Davis EP, Glynn LM. Annual Research Review: The power of predictability - patterns of signals in early life shape neurodevelopment and mental health trajectories. J Child Psychol Psychiatry 2024; 65:508-534. [PMID: 38374811 PMCID: PMC11283837 DOI: 10.1111/jcpp.13958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 02/21/2024]
Abstract
The global burden of early life adversity (ELA) is profound. The World Health Organization has estimated that ELA accounts for almost 30% of all psychiatric cases. Yet, our ability to identify which individuals exposed to ELA will develop mental illness remains poor and there is a critical need to identify underlying pathways and mechanisms. This review proposes unpredictability as an understudied aspect of ELA that is tractable and presents a conceptual model that includes biologically plausible mechanistic pathways by which unpredictability impacts the developing brain. The model is supported by a synthesis of published and new data illustrating the significant impacts of patterns of signals on child development. We begin with an overview of the existing unpredictability literature, which has focused primarily on longer patterns of unpredictability (e.g. years, months, and days). We then describe our work testing the impact of patterns of parental signals on a moment-to-moment timescale, providing evidence that patterns of these signals during sensitive windows of development influence neurocircuit formation across species and thus may be an evolutionarily conserved process that shapes the developing brain. Next, attention is drawn to emerging themes which provide a framework for future directions of research including the evaluation of functions, such as effortful control, that may be particularly vulnerable to unpredictability, sensitive periods, sex differences, cross-cultural investigations, addressing causality, and unpredictability as a pathway by which other forms of ELA impact development. Finally, we provide suggestions for prevention and intervention, including the introduction of a screening instrument for the identification of children exposed to unpredictable experiences.
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Affiliation(s)
- Elysia Poggi Davis
- Department of Psychology, University of Denver, Denver, CO, United States
- Department of Pediatrics, University of California, Irvine, Irvine, CA, United States
| | - Laura M. Glynn
- Department of Psychology, Chapman University, Orange, CA, United States
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Kember AJ, Elangainesan P, Ferraro ZM, Jones C, Hobson SR. Common sleep disorders in pregnancy: a review. Front Med (Lausanne) 2023; 10:1235252. [PMID: 37671402 PMCID: PMC10475609 DOI: 10.3389/fmed.2023.1235252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/02/2023] [Indexed: 09/07/2023] Open
Abstract
In this review, we provide a comprehensive overview of common sleep disorders during pregnancy, including their characterization, prevalence, risk factors, and possible contribution to maternal and fetal outcomes. We conducted a quasi-systematic literature search of the MEDLINE database and identified 744 studies from 1991 through 2021, inclusive, that met our inclusion criteria. We synthesized the existing literature on sleep disorders during pregnancy and highlighted controversies, research gaps, and needed clinical developments. Our review covers a range of sleep disorders, including insomnia, obstructive sleep apnea, restless legs syndrome, and circadian rhythm disorders. We discuss the prevalence of these disorders in pregnancy and their potential impact on maternal and fetal health outcomes. We also explore the relationship between sleep disorders, pre-pregnancy comorbidities such as obesity, and pregnancy-related conditions such as gestational diabetes mellitus and preeclampsia. In addition to summarizing the existing literature on sleep disorders during pregnancy, we also highlight opportunities for further research in this area. We suggest that future studies should strive to employ validated and objective measurement tools for sleep disorders and prioritize utilization of longitudinal methods with participant follow-up through postpartum, mid-life, menopause, and beyond. We also put forward investigation into the impact of circadian rhythm disruption on reproductive physiology and early pregnancy outcomes as an area of important work. Overall, our review provides valuable insights on sleep and reproduction and into common sleep disorders during pregnancy and their potential impact on maternal and fetal health outcomes.
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Affiliation(s)
- Allan J. Kember
- Department of Obstetrics and Gynaecology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health, Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, ON, Canada
- Shiphrah Biomedical Inc., Toronto, ON, Canada
| | - Praniya Elangainesan
- Temerty Faculty of Medicine, Medical Education, University of Toronto, Toronto, ON, Canada
| | - Zachary M. Ferraro
- Department of Obstetrics and Gynaecology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Claire Jones
- Department of Obstetrics and Gynaecology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Reproductive Endocrinology and Infertility, Mount Sinai Hospital, Toronto, ON, Canada
| | - Sebastian R. Hobson
- Department of Obstetrics and Gynaecology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health, Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, ON, Canada
- Temerty Faculty of Medicine, Medical Education, University of Toronto, Toronto, ON, Canada
- Temerty Faculty of Medicine, Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Maternal-Fetal Medicine Division, Mount Sinai Hospital, Toronto, ON, Canada
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Silva I, Costa D. Consequences of Shift Work and Night Work: A Literature Review. Healthcare (Basel) 2023; 11:healthcare11101410. [PMID: 37239693 DOI: 10.3390/healthcare11101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Nonstandard work schedules such as shift work and night work tend to trigger problems for workers in different areas. To illustrate the diversity of areas affected and the relative interest of the scientific community, we conducted a literature review of the effects of shift work and night work on workers. In particular, we intended to identify the main variables addressed in the field of health, the family sphere, and the organizational context. The literature review was carried out using the Web of Science with the following terms: "shift work", "rotating shifts", and "night work". Inclusion criteria incorporated empirical studies and articles written in Portuguese or English published in 2019. We selected 129 of the 619 articles identified. Regarding the impacts of shift work and night work, there existed a high discrepancy of focus between the three defined areas: health, family life, and organizational context. Specifically, health-related variables were the most studied (83.4%), followed by organizational variables (9.2%), and, lastly, family variables (7.4%). Based on these results, it is essential to extend the study of the two underrepresented impacts to other crucial areas, not only for the worker but also for organizations.
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Affiliation(s)
- Isabel Silva
- Interdisciplinary Centre of Social Sciences (CICS.NOVA.UMinho), University of Minho, 4710-057 Braga, Portugal
- School of Psychology (EPsi-UMinho), University of Minho, 4710-057 Braga, Portugal
| | - Daniela Costa
- School of Psychology (EPsi-UMinho), University of Minho, 4710-057 Braga, Portugal
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Liao CW, Wei CF, Chen MH, Hsieh WS, Lin CC, Chen PC. Association between maternal shift work during pregnancy child overweight and metabolic outcomes in early childhood. Front Public Health 2022; 10:1006332. [PMID: 36249262 PMCID: PMC9565036 DOI: 10.3389/fpubh.2022.1006332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 08/30/2022] [Indexed: 01/27/2023] Open
Abstract
Background Previous studies found that maternal shift work during pregnancy was associated with many reproductive hazards, including small for gestational age, preterm birth, stillbirth, and neurodevelopmental impairment. Some studies also showed that these children are more likely to become overweight in early childhood. However, the association with metabolic factors, such as insulin resistance and dyslipidemia, was less studied. Hence, we aimed to understand better the relationship between maternal shift work during pregnancy and the risk of childhood overweight and metabolic outcomes. Confounding factors were also discussed, including diet, exercise, and demographical factors. Methods We enrolled pregnant women before delivery in the Taiwan Birth Panel Study (TBPS) II conducted between 2010 and 2012, and followed the children of these participants in 2018. The objective of this study is to investigate the influence of prenatal and postnatal factors on infant and early childhood health. During the follow-up in 2018, we checked children's demographic data, obtained blood specimens, and checked their blood sugar, blood insulin, and lipid profiles. Structured questionnaires were used to evaluate demographic data. Multiple linear and logistic regressions were used to examine the associations between maternal shift work during pregnancy and child overweight, metabolic disorders, such as HOMA-IR, and lipid profiles. Results In this study, we included 407 mother-children pairs with different work shifts (350 day workers and 57 shift workers), and a sub-population without underweight children was also created (290 day workers and 47 shift workers). Shift work during pregnancy was associated with a higher Homeostasis Model Assessment-Insulin Resistance index (HOMA-IR) and a higher odds ratio for overweight in children born from mothers doing shift work during pregnancy after adjustment. The findings were attenuated when we investigated the effect of shift work before pregnancy. Conclusion Our study suggested that maternal shift work during pregnancy was associated with child overweight and insulin resistance in early childhood.
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Affiliation(s)
- Che-Wei Liao
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan,Department of Environmental and Occupational Medicine, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan
| | - Chih-Fu Wei
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Mei-Huei Chen
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan,Department of Pediatrics, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan
| | - Wu-Shiun Hsieh
- Department of Pediatrics, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan,Department of Pediatrics, Cathay General Hospital, Taipei, Taiwan
| | - Ching-Chun Lin
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan,*Correspondence: Ching-Chun Lin
| | - Pau-Chung Chen
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan,Department of Environmental and Occupational Medicine, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan,Department of Public Health, National Taiwan University College of Public Health, Taipei, Taiwan,National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli, Taiwan,Pau-Chung Chen
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Attention deficit hyperactivity disorder among children related to maternal job stress during pregnancy in Taiwan: a prospective cohort study. Int Arch Occup Environ Health 2022; 95:1231-1241. [PMID: 34999998 DOI: 10.1007/s00420-021-01821-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/25/2021] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Attention deficit hyperactivity disorder (ADHD) is the most common neurobehavioral disorders. Although studies have suggested relationships between ADHD in children and maternal psychosocial stress during pregnancy, little is known about the effects of work-related mental stress. Considering the increasing number of pregnant women who continue to work during the gestation period, this study investigated whether work-related stress during pregnancy is related to offspring ADHD. METHODS The Taiwan Birth Cohort Study followed selected representative mother-infant pairs in a face-to-face interview since a child was 6 months old. A total of 10,556 working pregnant women who completed follow-up 8 years later were included. Whether the 8-year-old child had ever received a diagnosis of ADHD were inquired. Self-reported job stress during pregnant period was obtained 6 months after delivery. Factors including perinatal and socioeconomic factors as well as the mother's job conditions were further analyzed with logistic regression. RESULTS Among those who continued working during pregnancy, 3850 (36.5%) mothers reported having job stress during pregnancy, and 210 (2.0%) of the children were diagnosed as having ADHD before 8 years of age. Compared with mothers who reported no job stress, the adjusted odds ratio of child ADHD was 1.91 (95% CI 1.21-3.07) for mothers with "very stressful" jobs during pregnancy and 1.53 (95% CI 1.04-2.25) for mothers with "rather stressful" jobs. CONCLUSION Among pregnant female workers, higher levels of job stress were related to the higher occurrence of ADHD in their children.
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Snyder K, Rech JP, Masuda K, Dinkel D. Perspectives of infant active play: a qualitative comparison of working versus stay-at-home parents. BMC Public Health 2021; 21:250. [PMID: 33516184 PMCID: PMC7847006 DOI: 10.1186/s12889-021-10286-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 01/20/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Parents play a key role in infant's development through their interactions and the type of environment they provide to promote active play. The amount of time parents are able to spend with their infant is dependent on their working status, yet few studies have explored parent perception of their infant's active play by working status. The purpose of this study was to explore parent perception of active play and compare responses between working and stay-at-home parents. METHODS Twenty-nine parents participated in this qualitative study by completing a one-time, in-person semi-structured interview based on the Theory of Planned Behavior. Themes were developed and compared based on parental working status using a directed content analysis approach. RESULTS All parents believed active play could have a positive effect on their child's development through physical, social and emotional, cognitive, and/or language and communication development. However, stay-at-home parents reported a broader impact of active play across these domains; whereas working parents most often referenced active play as impacting infant's physical development. Social and emotional interactions were the highest reported form of active play among all parents. Additionally, all parents described similar barriers to increasing the time for active play. The most commonly reported barrier for all parents was time or schedule followed by care needs of the infant, environmental concerns, and need for restrictive devices (e.g., car seats). More stay-at-home parents than working parents reported the care needs of the infant as being a barrier. Recommendations for active play were not widely known amongst all parents, with a higher percentage of working parents reporting they would desire advice from a healthcare provider. CONCLUSIONS Working status of parents appears to have implications on perceptions of active play which in turn may influence infants' development. Future studies should objectively assess the impact of parents' working status on infant development and explore how gender of the parent may serve as a confounding variable.
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Affiliation(s)
- Kailey Snyder
- School of Pharmacy and Health Professions, Creighton University, 2500 California Plaza, Omaha, NE, 68178, USA.
| | - John P Rech
- School of Health & Kinesiology, University of Nebraska at Omaha, 6001 Dodge Street, Omaha, NE, 68182, USA
| | - Kim Masuda
- School of Pharmacy and Health Professions, Creighton University, 2500 California Plaza, Omaha, NE, 68178, USA
| | - Danae Dinkel
- School of Health & Kinesiology, University of Nebraska at Omaha, 6001 Dodge Street, Omaha, NE, 68182, USA
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