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Scheffers LE, Kok R, van den Berg LE, Jmp H, Boersma E, van Capelle CI, Helbing WA, Ploeg AT, Koopman LP. Effects of enzyme replacement therapy on cardiac function in classic infantile Pompe disease. Int J Cardiol 2023; 380:65-71. [PMID: 36893858 DOI: 10.1016/j.ijcard.2023.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/17/2023] [Accepted: 03/05/2023] [Indexed: 03/09/2023]
Abstract
OBJECTIVE Patients with classic infantile Pompe disease are born with a hypertrophic cardiomyopathy, which resolves after treatment with Enzyme replacement therapy (ERT). We aimed to assess potential deterioration of cardiac function over time using myocardial deformation analysis. METHODS Twenty-seven patients treated with ERT were included. Cardiac function was assessed at regular time intervals (before and after start with ERT) using conventional echocardiography and myocardial deformation analysis. Separate linear mixed effect models were used to asses temporal changes within the first year and the long-term follow-up period. Echocardiograms of 103 healthy children served as controls. RESULTS A total of 192 echocardiograms were analyzed. Median follow-up was 9.9 years (IQR: 7.5-16.3). Mean LVMI before start of ERT was increased 292.3 g/m2 (95% CI: 202.8-381.8, mean Z-score + 7.6) and normalized after 1 year of ERT 87.3 g/m2 (CI: 67.5-107.1, mean Z-score + 0.8, p < 0.001). Mean shortening fraction was within normal limits before start of ERT, up to 22 years of follow-up. Cardiac function measured by RV/LV longitudinal, and circumferential strain was diminished before start of ERT, but normalized (<-16%) within 1 year after start of ERT, and all remained within normal limits during follow-up. Only LV circumferential strain gradually worsened in Pompe patients (+0.24%/year) during follow-up compared to controls. LV longitudinal strain was diminished in Pompe patients, but did not change significantly over time compared to controls. CONCLUSION Cardiac function, measured using myocardial deformation analysis, normalizes after start of ERT, and seems to remain stable over a median follow-up period of 9.9 years.
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Affiliation(s)
- L E Scheffers
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands; Center for Lysosomal and Metabolic Diseases, Erasmus MC- Sophia children's hospital, Rotterdam, the Netherlands.
| | - R Kok
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - L E van den Berg
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands; Center for Lysosomal and Metabolic Diseases, Erasmus MC- Sophia children's hospital, Rotterdam, the Netherlands; Department of Orthopedics and Sports Medicine, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Hout Jmp
- Center for Lysosomal and Metabolic Diseases, Erasmus MC- Sophia children's hospital, Rotterdam, the Netherlands
| | - E Boersma
- Department of Cardiology, Erasmus MC- Sophia children's hospital, Rotterdam, the Netherlands
| | - C I van Capelle
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - W A Helbing
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands; Department of Pediatrics, division of Cardiology, Radboud umc - Amalia Children's Hospital, Nijmegen, the Netherlands; Department of Radiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands
| | - A T Ploeg
- Center for Lysosomal and Metabolic Diseases, Erasmus MC- Sophia children's hospital, Rotterdam, the Netherlands
| | - L P Koopman
- Department of Pediatric Cardiology, Erasmus MC - Sophia Children's Hospital, Rotterdam, the Netherlands
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Bertens LCM, Mohabier KSC, van der Hulst M, Broekharst DSE, Ismaili M’hamdi H, Burdorf A, Kok R, de Graaf JP, Steegers EAP. Complexity and interplay of faced adversities and perceived health and well-being in highly vulnerable pregnant women-the Mothers of Rotterdam program. BMC Public Health 2023; 23:43. [PMID: 36609315 PMCID: PMC9817271 DOI: 10.1186/s12889-023-14975-7] [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: 06/10/2022] [Accepted: 01/02/2023] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Living in socially disadvantaged circumstances has a widespread impact on one's physical and mental health. That is why individuals living in this situation are often considered vulnerable. When pregnant, not only the woman's health is affected, but also that of her (unborn) child. It is well accepted that vulnerable populations experience worse (perinatal) health, however, little is known about the lived adversities and health of these vulnerable individuals. OBJECTIVES With this article, insights into this group of highly vulnerable pregnant women are provided by describing the adversities these women face and their experienced well-being. METHODS Highly vulnerable women were recruited when referred to tailored social care during pregnancy. Being highly vulnerable was defined as facing at least three different adversities divided over two or more life-domains. The heat map method was used to assess the interplay between adversities from the different life domains. Demographics and results from the baseline questionnaires on self-sufficiency and perceived health and well-being were presented. RESULTS Nine hundred nineteen pregnant women were referred to social care (2016-2020). Overall, women had a median of six adversities, distributed over four life-domains. The heat map revealed a large variety in lived adversities, which originated from two parental clusters, one dominated by financial adversities and the other by a the combination of a broad range of adversities. The perceived health was moderate, and 25-34% experienced moderate to severe levels of depression, anxiety or stress. This did not differ between the two parental clusters. CONCLUSIONS This study shows that highly vulnerable pregnant women deal with multiple adversities affecting not only their social and economic position but also their health and well-being.
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Affiliation(s)
- L. C. M. Bertens
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - K. S. C. Mohabier
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - M. van der Hulst
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - D. S. E. Broekharst
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - H. Ismaili M’hamdi
- grid.5645.2000000040459992XDepartment of Medical Ethics and Philosophy of Medicine, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - A. Burdorf
- grid.5645.2000000040459992XDepartment of Public Health, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - R. Kok
- grid.6906.90000000092621349Erasmus School of Social and Behavioural Sciences Clinical, Child and Family Studies, Erasmus University, Rotterdam, The Netherlands
| | - J. P. de Graaf
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - E. A. P. Steegers
- grid.5645.2000000040459992XDepartment of Obstetrics and Gynaecology, Erasmus University Medical Centre Rotterdam, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
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Eberhart J, Koepp AE, Howard SJ, Kok R, McCoy DC, Baker ST. Advancing Educational Research on Children’s Self-Regulation With Observational Measures. Journal of Psychoeducational Assessment 2022. [DOI: 10.1177/07342829221143208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Self-regulation is crucial for children’s development and learning. Almost by convention, it is assumed that self-regulation is a relatively stable skill, and little is known about its dynamic nature and context dependency. Traditional measurement approaches such as single direct assessments and adult reports are not well suited to address questions around variations of self-regulation within individuals and influences from social-contextual factors. Measures relying on child observations are uniquely positioned to address these questions and to advance the field by shedding light on self-regulatory variability and incremental growth. In this paper, we review traditional measurement approaches (direct assessments and adult reports) and recently developed observational measures. We discuss which questions observational measures are best suited to address and why traditional measurement approaches fall short. Finally, we share lessons learned based on our experiences using child observations in educational settings and discuss how measurement approaches should be carefully aligned to the research questions.
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Affiliation(s)
| | | | | | - Rianne Kok
- Erasmus University Rotterdam, Rotterdam, Netherlands
| | - Dana C. McCoy
- Harvard Graduate School of Education, Cambridge, MA, USA
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van der Hulst M, Kok R, Prinzie P, Steegers EAP, Bertens LCM. Early Maternal Caregiving Capacities in Highly Vulnerable, Multi-Problem Families. Int J Environ Res Public Health 2022; 19:16130. [PMID: 36498211 PMCID: PMC9738820 DOI: 10.3390/ijerph192316130] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/25/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Caregiving capacities may be an important link between multi-problem circumstances and adverse child development. This study aims to assess caregiving capacities and their correlations in highly vulnerable, multi-problem families in Rotterdam, the Netherlands. Caregiving capacity (overall, emotional and instrumental) was prospectively assessed in 83 highly vulnerable women using video-observations of daily caregiving tasks, six week postpartum. Supporting data were collected at three time points: at inclusion, six weeks after inclusion and six weeks postpartum, and these included psychological symptoms, self-sufficiency, problematic life domains, home environment, income, depression, anxiety and stress. Pregnancy- and delivery-related information was collected from obstetric care professionals. Maternal caregiving scores averaged below adequate quality. Mothers living in an unsafe home environment (B = 0.62) and mothers with more problematic life domains (≤3 domains, B = 0.32) showed significantly higher instrumental caregiving capacities. Other variables were not related to caregiving capacities. Caregiving capacity in this highly vulnerable population was below adequate quality. However, in most cases there was no significant association between caregiving and the variables related to vulnerability. This means that a potential association between vulnerability and caregiving capacities might be driven by the interaction between several problems, rather than the type or number of problems.
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Affiliation(s)
- Marije van der Hulst
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000 CA Rotterdam, The Netherlands
- Research Group Transforming Youth Care, The Hague University of Applied Sciences, 2521 EN The Hague, The Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3062 DR Rotterdam, The Netherlands
| | - Peter Prinzie
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, 3062 DR Rotterdam, The Netherlands
| | - Eric A. P. Steegers
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000 CA Rotterdam, The Netherlands
| | - Loes C. M. Bertens
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Postbus 2040, 3000 CA Rotterdam, The Netherlands
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Dall' Aglio L, Rijlaarsdam J, Mulder RH, Neumann A, Felix JF, Kok R, Bakermans-Kranenburg MJ, van Ijzendoorn MH, Tiemeier H, Cecil CAM. Epigenome-wide associations between observed maternal sensitivity and offspring DNA methylation: a population-based prospective study in children. Psychol Med 2022; 52:2481-2491. [PMID: 33267929 DOI: 10.1017/s0033291720004353] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Experimental work in animals has shown that DNA methylation (DNAm), an epigenetic mechanism regulating gene expression, is influenced by typical variation in maternal care. While emerging research in humans supports a similar association, studies to date have been limited to candidate gene and cross-sectional approaches, with a focus on extreme deviations in the caregiving environment. METHODS Here, we explored the prospective association between typical variation in maternal sensitivity and offspring epigenome-wide DNAm, in a population-based cohort of children (N = 235). Maternal sensitivity was observed when children were 3- and 4-years-old. DNAm, quantified with the Infinium 450 K array, was extracted at age 6 (whole blood). The influence of methylation quantitative trait loci (mQTLs), DNAm at birth (cord blood), and confounders (socioeconomic status, maternal psychopathology) was considered in follow-up analyses. RESULTS Genome-wide significant associations between maternal sensitivity and offspring DNAm were observed at 13 regions (p < 1.06 × 10-07), but not at single sites. Follow-up analyses indicated that associations at these regions were in part related to genetic factors, confounders, and baseline DNAm levels at birth, as evidenced by the presence of mQTLs at five regions and estimate attenuations. Robust associations with maternal sensitivity were found at four regions, annotated to ZBTB22, TAPBP, ZBTB12, and DOCK4. CONCLUSIONS These findings provide novel leads into the relationship between typical variation in maternal caregiving and offspring DNAm in humans, highlighting robust regions of associations, previously implicated in psychological and developmental problems, immune functioning, and stress responses.
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Affiliation(s)
- Lorenza Dall' Aglio
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Jolien Rijlaarsdam
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rosa H Mulder
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Alexander Neumann
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada
| | - Janine F Felix
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | | | - Marinus H van Ijzendoorn
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
- Primary Care Unit School of Clinical Medicine, University of Cambridge, UK
| | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, USA
| | - Charlotte A M Cecil
- Department of Child and Adolescent Psychiatry, Erasmus MC, University Medical Center Rotterdam-Sophia Children's Hospital, Rotterdam, The Netherlands
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, 2333 ZC, Leiden, The Netherlands
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6
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Luites JWH, Kuijer PPFM, Hulshof CTJ, Kok R, Langendam MW, Oosterhuis T, Anema JR, Lapré-Utama VP, Everaert CPJ, Wind H, Smeets RJEM, van Zaanen Y, Hoebink EA, Voogt L, de Hoop W, Boerman DH, Hoving JL. The Dutch Multidisciplinary Occupational Health Guideline to Enhance Work Participation Among Low Back Pain and Lumbosacral Radicular Syndrome Patients. J Occup Rehabil 2022; 32:337-352. [PMID: 34313903 PMCID: PMC9576671 DOI: 10.1007/s10926-021-09993-4] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/28/2021] [Indexed: 05/06/2023]
Abstract
Purpose Based on current scientific evidence and best practice, the first Dutch multidisciplinary practice guideline for occupational health professionals was developed to stimulate prevention and enhance work participation in patients with low back pain (LBP) and lumbosacral radicular syndrome (LRS). Methods A multidisciplinary working group with health care professionals, a patient representative and researchers developed the recommendations after systematic review of evidence about (1) Risk factors, (2) Prevention, (3) Prognostic factors and (4) Interventions. Certainty of the evidence was rated with GRADE and the Evidence to Decision (EtD) framework was used to formulate recommendations. High or moderate certainty resulted in a recommendation "to advise", low to very low in a recommendation "to consider", unless other factors in the framework decided differently. Results An inventory of risk factors should be considered and an assessment of prognostic factors is advised. For prevention, physical exercises and education are advised, besides application of the evidence-based practical guidelines "lifting" and "whole body vibration". The stepped-care approach to enhance work participation starts with the advice to stay active, facilitated by informing the worker, reducing workload, an action plan and a time-contingent increase of work participation for a defined amount of hours and tasks. If work participation has not improved within 6 weeks, additional treatments should be considered based on the present risk and prognostic factors: (1) physiotherapy or exercise therapy; (2) an intensive workplace-oriented program; or (3) cognitive behavioural therapy. After 12 weeks, multi-disciplinary (occupational) rehabilitation therapy need to be considered. Conclusions Based on systematic reviews and expert consensus, the good practice recommendations in this guideline focus on enhancing work participation among workers with LBP and LRS using a stepped-care approach to complement existing guidelines focusing on recovery and daily functioning.
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Affiliation(s)
- J W H Luites
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands.
| | - P P F M Kuijer
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
| | - C T J Hulshof
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
- Netherlands Society of Occupational Medicine (NVAB), Utrecht, The Netherlands
| | - R Kok
- Dutch Society of Insurance Medicine (NVVG), Amsterdam, The Netherlands
| | - M W Langendam
- Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam Institute of Public Health, Amsterdam, The Netherlands
| | - T Oosterhuis
- Netherlands Society of Occupational Medicine (NVAB), Utrecht, The Netherlands
| | - J R Anema
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
- Research Center for Insurance Medicine (KCVG), Amsterdam, The Netherlands
| | - V P Lapré-Utama
- Dutch Association of Medical Officers in Private Insurances (GAV), Utrecht, The Netherlands
| | - C P J Everaert
- Netherlands Society of Occupational Medicine (NVAB), Utrecht, The Netherlands
- Arbo Unie, Arnhem, The Netherlands
| | - H Wind
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
- Dutch Society of Insurance Medicine (NVVG), Amsterdam, The Netherlands
| | - R J E M Smeets
- Department of Rehabilitation Medicine, Maastricht University, Maastricht, the Netherlands
- Libra Rehabilitation and Audiology, Eindhoven, The Netherlands
- Netherlands Society of Physical and Rehabilitation Medicine (VRA), Utrecht, The Netherlands
| | - Y van Zaanen
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
- Dutch Association of Physiotherapists Working in Occupational Health and Ergonomics (NVBF-KNGF), Amersfoort, The Netherlands
| | - E A Hoebink
- Department of Orthopaedic Surgery, Foundation for Orthopaedic Research Care and Education (FORCE), Amphia Hospital, Breda, The Netherlands
| | - L Voogt
- Dutch Association for Patients With Back Problems (NVvR), Rotterdam, The Netherlands
| | - W de Hoop
- Dutch Association for Labour Experts (NVvA), Nijkerk, The Netherlands
| | - D H Boerman
- Department of Neurology, Rijnstate Hospital, Arnhem, The Netherlands
- Netherlands Society for Neurology (NVN), Utrecht, The Netherlands
| | - J L Hoving
- Department of Public and Occupational Health, Amsterdam UMC, Amsterdam, The Netherlands
- Research Center for Insurance Medicine (KCVG), Amsterdam, The Netherlands
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Choenni V, Kok R, Verhulst FC, van Lier MHM, Lambregtse-van den Berg MP. The Dutch Infant Caregiving Assessment Scales: Psychometric properties in mothers with and without a severe psychiatric disorder. Int J Methods Psychiatr Res 2022; 31:e1902. [PMID: 35088917 PMCID: PMC9159692 DOI: 10.1002/mpr.1902] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 11/02/2021] [Accepted: 12/07/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES This study examines the psychometric properties of the Dutch adaptation of the Infant Caregiving Assessment Scales (INCAS). This standardized observation procedure is the first to assess both emotional and instrumental caregiving skills of mothers with a severe psychiatric disorder, during the postpartum period. METHODS Mothers with and without a severe psychiatric disorder (N = 123) were observed at home at the infant age of 6 weeks during daily caregiving; changing a diaper, bathing, dressing, and feeding. Recordings of observations were coded independently by trained coders, blind for group membership. Subsequently, the component structure, internal consistency, interrater reliability, and concurrent validity of the INCAS were examined. RESULTS Principal component analysis largely confirmed the two a priori defined caregiving domains. The internal consistencies of the emotional and instrumental domains were deemed excellent and good, respectively. The interrater reliability was substantial for the emotional domain and moderate for the instrumental domain. Furthermore, evidence for good concurrent validity of the emotional domain was found. Lastly, significant correlations were found between specific instrumental caregiving skills and maternal neuropsychological functioning. CONCLUSION Psychometric findings support the INCAS as a comprehensive and reliable instrument for standardized assessment of caregiving by mothers with a severe psychiatric disorder.
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Affiliation(s)
- Vandhana Choenni
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, University Medical Center, Rotterdam, The Netherlands
| | - Rianne Kok
- Department of Psychology, Education, & Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Frank C Verhulst
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, University Medical Center, Rotterdam, The Netherlands.,Child and Adolescent Mental Health Center, Mental Health Services, Capital Region of Denmark, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Monique H M van Lier
- Department of the Parnassia Psychiatric Institute, Youz, Center for Youth Mental Healthcare, The Hague, The Netherlands
| | - Mijke P Lambregtse-van den Berg
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC-Sophia Children's Hospital, University Medical Center, Rotterdam, The Netherlands.,Department of Psychiatry, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
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8
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van der Hulst M, Polinder S, Kok R, Prinzie P, de Groot MW, Burdorf A, Bertens LCM. Socio-economic determinants of healthcare costs in early life: a register-based study in the Netherlands. Int J Equity Health 2022; 21:5. [PMID: 35022032 PMCID: PMC8756721 DOI: 10.1186/s12939-021-01589-x] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 11/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background Children with low socioeconomic status (SES) have an increased risk of a suboptimal start in life with ensuing higher healthcare costs. This study aims to investigate the effects of individual- (monthly household income) and contextual-level SES (household income and neighborhood deprivation), and perinatal morbidity (preterm birth and small for gestational age ((<10th percentile), SGA)) on healthcare costs in early life (0–3 years of age). Methods Individual-linked data from three national registries (Perinatal Registry Netherlands, Statistics Netherlands, and Healthcare Vektis) were obtained of all children born between 2011 and 2014 (N = 480,471) in the Netherlands. Binomial logistic regression was used to model annual healthcare costs as a function of their household income (per €1000), neighborhood deprivation index (range − 13.26 – 10.70), their perinatal morbidity and demographic characteristics. Annual healthcare cost were dichotomized into low healthcare costs (Q1-Q3 below €1000) and high healthcare costs (Q4 €1000 or higher). Results Children had a median of €295 annual healthcare costs, ranging from €72 to €4299 (5–95%). Binomial logistic regression revealed that for every €1000 decrease in monthly household income, the OR for having high healthcare costs is 0.99 (0.99–0.99). Furthermore, for every one-unit increase in neighborhood deprivation the OR for having high healthcare costs increase 1.02 (1.01–1.02). Finally, the model revealed an OR of 2.55 (2.48–2.61) for preterm born children, and an OR of 1.44 (1.41–1.48) for children SGA, to have high healthcare costs compared to their healthy peers. Conclusion More neighborhood deprivation was directly related to higher healthcare costs in young children. On top of this, lower household income was consistently and independently related to higher healthcare costs. By optimizing conditions for low SES populations, the impact of low SES circumstances on their healthcare costs can be positively influenced. Additionally, policies that influence more timely and appropriate healthcare use in low SES populations can reduce healthcare costs further.
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Affiliation(s)
- Marije van der Hulst
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000, CA, Rotterdam, the Netherlands. .,Research Group Transforming Youth Care, The Hague University of Applied Sciences, The Hague, The Netherlands.
| | - Suzanne Polinder
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University, Rotterdam, the Netherlands
| | - Peter Prinzie
- Department of Psychology, Education and Child Studies, Erasmus University, Rotterdam, the Netherlands
| | - Marijke W de Groot
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000, CA, Rotterdam, the Netherlands.,Department of Obstetrics and Gynecology, Elisabeth Twee Steden Hospital, Tilburg, the Netherlands
| | - Alex Burdorf
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Loes C M Bertens
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, P.O. Box 2040, 3000, CA, Rotterdam, the Netherlands
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9
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Ringoot AP, Jansen PW, Kok R, IJzendoorn MH, Verlinden M, Verhulst FC, Bakermans‐Kranenburg M, Tiemeier H. Parenting, young children's behavioral self‐regulation and the quality of their peer relationships. Social Development 2021. [DOI: 10.1111/sode.12573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ank P. Ringoot
- Department of Psychology, Education and Child Studies Erasmus University Rotterdam Rotterdam The Netherlands
- Department of Psychology and Educational Sciences Open University of the Netherlands Heerlen The Netherlands
- Department of Child and Adolescent Psychiatry/Psychology Erasmus University Medical Center Rotterdam The Netherlands
| | - Pauline W. Jansen
- Department of Psychology, Education and Child Studies Erasmus University Rotterdam Rotterdam The Netherlands
- Department of Child and Adolescent Psychiatry/Psychology Erasmus University Medical Center Rotterdam The Netherlands
- The Generation R Study Group Erasmus University Medical Center Rotterdam The Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies Erasmus University Rotterdam Rotterdam The Netherlands
| | - Marinus H. IJzendoorn
- Department of Psychology, Education and Child Studies Erasmus University Rotterdam Rotterdam The Netherlands
- Research Department of Clinical, Educational and Health Psychology Faculty of Brain Sciences UCL University of London London UK
| | - Marina Verlinden
- College of Natural and Health Sciences Zayed University Abu Dhabi U.A.E
| | - Frank C. Verhulst
- Department of Child and Adolescent Psychiatry/Psychology Erasmus University Medical Center Rotterdam The Netherlands
- Faculty of Health and Medical Sciences Department of Clinical Medicine University of Copenhagen Copenhagen Denmark
| | | | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry/Psychology Erasmus University Medical Center Rotterdam The Netherlands
- Department of Social and Behavioral Science Harvard TH Chan School of Public Health Boston USA
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10
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Lutz MC, Kok R, Verveer I, Malbec M, Koot S, van Lier PAC, Franken IHA. Diminished error-related negativity and error positivity in children and adults with externalizing problems and disorders: a meta-analysis on error processing. J Psychiatry Neurosci 2021; 46:E615-E627. [PMID: 34753790 PMCID: PMC8580828 DOI: 10.1503/jpn.200031] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 07/03/2020] [Accepted: 07/04/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Deficits in error processing are reflected in an inability of people with externalizing problems to adjust their problem behaviour. The present study contains 2 meta-analyses, testing whether error processing - indexed by the event-related potentials error-related negativity (ERN) and error positivity (Pe) - is reduced in children and adults with externalizing problems and disorders compared to healthy controls. METHODS We conducted a systematic search in PubMed (1980 to December 2018), PsycInfo (1980 to December 2018) and Scopus (1970 to December 2018), identifying 328 studies. We included studies that measured error processing using the Eriksen flanker task, the go/no-go task or the stop-signal task in healthy controls and in adults or children with clearly described externalizing behavioural problems (e.g., aggression) or a clinical diagnosis on the externalizing spectrum (e.g., addiction). RESULTS Random-effect models (ERN: 23 studies, 1739 participants; Pe: 27 studies, 1456 participants) revealed a reduced ERN amplitude (Hedges' g = 0.44, 95% confidence interval [CI] 0.29 to 0.58) and a reduced Pe amplitude (Hedges' g = -0.27, 95% CI -0.44 to -0.09) during error processing in people with externalizing problems or disorders compared to healthy controls. Type of diagnosis, age and the presence of performance feedback or comorbidity did not moderate the results. The employed cognitive task was a moderator for Pe but not for ERN. The go/no-go task generated a greater amplitude difference in Pe than the Eriksen flanker task. Small-sample assessment revealed evidence of publication bias for both event-related potentials. However, a p curve analysis for ERN showed that evidential value was present; for Pe, the p curve analysis was inconclusive. LIMITATIONS The moderators did not explain the potential heterogeneity in most of the analysis, suggesting that other disorder- and patient-related factors affect error processing. CONCLUSION Our findings indicate the presence of compromised error processing in externalizing psychopathology, suggesting diminished activation of the prefrontal cortex during performance monitoring.
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Affiliation(s)
- Miranda Christine Lutz
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier).
| | - Rianne Kok
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
| | - Ilse Verveer
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
| | - Marcelo Malbec
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
| | - Susanne Koot
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
| | - Pol A C van Lier
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
| | - Ingmar H A Franken
- From the Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, the Netherlands (Lutz, Kok, Verveer, Malbec, Franken); the Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, HV Amsterdam, the Netherlands (Lutz, Koot, van Lier)
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11
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Broeks CW, Kok R, Choenni V, Van R, Hoogendijk W, Hillegers M, Kamperman A, Lambregtse-Van den Berg MP. Salivary cortisol reactivity in 6-month-old infants of mothers with severe psychiatric disorders: findings from the face-to-Face Still-Face paradigm. Comprehensive Psychoneuroendocrinology 2021; 7:100078. [PMID: 35757057 PMCID: PMC9216463 DOI: 10.1016/j.cpnec.2021.100078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/10/2021] [Accepted: 08/02/2021] [Indexed: 11/21/2022] Open
Abstract
Background. Maternal psychopathology is associated with altered HPA axis functioning in offspring. Most studies have focused on mildly affected populations, but less is known about the effect of severe maternal psychopathology. In our explorative study we investigated in a heterogenic sample of mothers with severe and long-lasting psychiatric disorders, if a diagnosis of depression and severity of general maternal psychiatric symptomatology were associated with infant salivary cortisol reactivity to the Face-to-Face Still-Face (FFSF) paradigm at 6 months of age. Methods. A clinical sample of 36 mother-infant dyads was explored. All mothers fulfilled criteria for a severe psychiatric disorder and had psychiatric complaints for the last two consecutive years. Maternal diagnosis was established during pregnancy using a diagnostic interview and general maternal psychiatric symptom severity was established by self-report at the time of the FFSF procedure. The FFSF paradigm was used to assess infants’ response to social stress at the age of 6 months. Infant saliva samples were collected at three time points: 5 min before and 15 and 30 min after the social stressor. Cortisol reactivity was operationalized as incremental Area Under the Curve (AUCi). Potential confounders were identified and adjusted for. Results. In regression analyses, a negative relationship was found between infant cortisol reactivity (AUCi) during the FFSF paradigm at 6 months and general maternal symptom severity at time of the FFSF paradigm (unadjusted n = 36, ß = −0.331, B = −9.758, SE 4.8, p = .048; adjusted n = 36, ß = −0.335, B = −9.868, SE 4.5, p = .039) and for diagnosis of perinatal depression at trend level (unadjusted n = 36, ß = −0.293, B = −8.640, SE 4.8, p = .083; adjusted n = 36, ß = −0.317, B = −9.347, SE 4.6, p = .052). Analyses were adjusted for gestational age. Conclusions. Preliminary results on cortisol reactivity in 6-month-old infants of mothers with severe and long-lasting psychiatric disorders show a significant reduction in the group of mothers who experienced a high level of psychiatric symptoms in the post-partum period, compared to mothers with lower levels of psychiatric symptomatology. The same trend was found for mothers with and without a diagnosis of perinatal depression. Since these infants are considered to be at increased risk for later psychopathology, our study suggests that future longitudinal studies should investigate whether reduced cortisol reactivity in babies could be a marker for any adverse outcomes, besides other possible risk factors (e.g. (epi)genetic phenomena). Psychiatric symptom severity in mothers might affect infant cortisol reactivity during the Face-to-Face-Still-Face (FFSF) paradigm. Infants of mothers with a diagnosis of depression show borderline diminished reactivity of cortisol during the FFSF paradigm. Under-activation of cortisol reactivity in infants of severely affected mothers might point to early patterns of blunted HPA-axis functioning.
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Affiliation(s)
- Carlinde W. Broeks
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Psychiatry, Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Arkin Institute for Mental Health, Amsterdam, the Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, the Netherlands
| | - Vandhana Choenni
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Rien Van
- Arkin Institute for Mental Health, Amsterdam, the Netherlands
| | - Witte Hoogendijk
- Department of Psychiatry, Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Manon Hillegers
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Astrid Kamperman
- Department of Psychiatry, Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Epidemiological and Social Psychiatric Research Institute, Erasmus MC, Rotterdam, the Netherlands
| | - Mijke P. Lambregtse-Van den Berg
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Psychiatry, Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Corresponding author. PhD Address: P.O. Box 2040, 3000 CA Rotterdam, the Netherlands.
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12
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Lutz MC, Kok R, Franken IHA. Event-related potential (ERP) measures of error processing as biomarkers of externalizing disorders: A narrative review. Int J Psychophysiol 2021; 166:151-159. [PMID: 34146603 DOI: 10.1016/j.ijpsycho.2021.06.002] [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: 05/14/2020] [Revised: 03/24/2021] [Accepted: 06/06/2021] [Indexed: 12/12/2022]
Abstract
Previous studies have shown that electrophysiological measures of error processing are affected in patients at risk or diagnosed with internalizing disorders, hence, suggesting that error processing could be a suitable biomarker for internalizing disorders. In this narrative review, we will evaluate studies that address the role of event-related potential (ERP) measures of error-processing in externalizing disorders and discuss to what extend these can be considered a biomarker for externalizing disorders. Currently, there is evidence for the notion that electrophysiological indices of error processing such as the error-related negativity (ERN) and error positivity (Pe) are reduced in individuals with substance use disorders, attention-deficit/hyperactivity disorder, and in forensic populations. However, it remains unclear whether this is also the case for other understudied disorders such as behavioral addiction. Furthermore, to fully understand how these deficits affect day to day behavior, we encourage research to focus on testing current theories and hypotheses of ERN and Pe. In addition, we argue that within an externalizing disorder, individual differences in error processing deficits may be related to prognosis and gender of the patient, methodological issues and presence of comorbidity. Next, we review studies that have related treatment trajectories with ERP measures of error processing, and we discuss the prospect of improving error processing as a treatment option. We conclude that ERP measures of error processing are candidate biomarkers for externalizing disorders, albeit we strongly urge researchers to continue looking into the predictive value of these measures in the etiology and treatment outcome through multi-method and longitudinal designs.
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Affiliation(s)
- Miranda C Lutz
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, P.O. 1738, 3000 DR Rotterdam, the Netherlands; Department of Clinical, Neuro- and Developmental Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081 HV Amsterdam, the Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, P.O. 1738, 3000 DR Rotterdam, the Netherlands
| | - Ingmar H A Franken
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, P.O. 1738, 3000 DR Rotterdam, the Netherlands.
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13
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Os NMV, Kok R, Bolsman TABM. Alkylarylsulphonate: Beziehungen zwischen chemischer Struktur und ihren physikochemischen Eigenschaften / Alkylarenesulphonates: The Effect of Chemical Structure on Physico-chemical Properties. TENSIDE SURFACT DET 2021. [DOI: 10.1515/tsd-1992-290311] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Luo M, Meehan AJ, Walton E, Röder S, Herberth G, Zenclussen AC, Cosín-Tomás M, Sunyer J, Mulder RH, Cortes Hidalgo AP, Bakermans-Kranenburg MJ, Felix JF, Relton C, Suderman M, Pappa I, Kok R, Tiemeier H, van IJzendoorn MH, Barker ED, Cecil CAM. Neonatal DNA methylation and childhood low prosocial behavior: An epigenome-wide association meta-analysis. Am J Med Genet B Neuropsychiatr Genet 2021; 186:228-241. [PMID: 34170065 DOI: 10.1002/ajmg.b.32862] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 05/26/2021] [Accepted: 06/02/2021] [Indexed: 11/10/2022]
Abstract
Low prosocial behavior in childhood has been consistently linked to later psychopathology, with evidence supporting the influence of both genetic and environmental factors on its development. Although neonatal DNA methylation (DNAm) has been found to prospectively associate with a range of psychological traits in childhood, its potential role in prosocial development has yet to be investigated. This study investigated prospective associations between cord blood DNAm at birth and low prosocial behavior within and across four longitudinal birth cohorts from the Pregnancy And Childhood Epigenetics (PACE) Consortium. We examined (a) developmental trajectories of "chronic-low" versus "typical" prosocial behavior across childhood in a case-control design (N = 2,095), and (b) continuous "low prosocial" scores at comparable cross-cohort time-points (N = 2,121). Meta-analyses were performed to examine differentially methylated positions and regions. At the cohort-specific level, three CpGs were found to associate with chronic low prosocial behavior; however, none of these associations was replicated in another cohort. Meta-analysis revealed no epigenome-wide significant CpGs or regions. Overall, we found no evidence for associations between DNAm patterns at birth and low prosocial behavior across childhood. Findings highlight the importance of employing multi-cohort approaches to replicate epigenetic associations and reduce the risk of false positive discoveries.
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Affiliation(s)
- Mannan Luo
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands.,Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Alan J Meehan
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.,Yale Child Study Center, Yale School of Medicine, New Haven, USA
| | - Esther Walton
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.,Department of Psychology, University of Bath, Bath, UK
| | - Stefan Röder
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Gunda Herberth
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Ana C Zenclussen
- Department for Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany
| | - Marta Cosín-Tomás
- ISGlobal, Barcelona, Catalonia, Spain.,Universitat Pompeu Fabra, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - Jordi Sunyer
- ISGlobal, Barcelona, Catalonia, Spain.,Universitat Pompeu Fabra, Barcelona, Catalonia, Spain.,Centro de Investigación Biomédica en Red en Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,IMIM Parc Salut Mar, Barcelona, Catalonia, Spain
| | - Rosa H Mulder
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Andrea P Cortes Hidalgo
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | | | - Janine F Felix
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Caroline Relton
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Matthew Suderman
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Irene Pappa
- Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands
| | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Social and Behavioral Science, Harvard TH Chan School of Public Health, Boston, Massachusetts, USA
| | - Marinus H van IJzendoorn
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, Rotterdam, The Netherlands.,Department of Clinical, Educational and Health Psychology, Faculty of Brain Sciences, University College London, London, UK
| | - Edward D Barker
- Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Charlotte A M Cecil
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Psychology, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
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15
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Chavez Arana C, de Pauw SS, van IJzendoorn MH, de Maat DA, Kok R, Prinzie P. No differential susceptibility or diathesis stress to parenting in early adolescence: Personality facets predicting behaviour problems. Personality and Individual Differences 2021. [DOI: 10.1016/j.paid.2020.110406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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16
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Broeks CW, Choenni V, Kok R, van der Voorn B, de Kruijff I, van den Akker ELT, van Rossum EFC, Hoogendijk WJG, Hillegers MHJ, Kamperman AM, Lambregtse-Van den Berg MP. An exploratory study of perinatal hair cortisol concentrations in mother-infant dyads with severe psychiatric disorders versus healthy controls. BJPsych Open 2021; 7:e28. [PMID: 33407971 PMCID: PMC8058941 DOI: 10.1192/bjo.2020.159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Maternal psychopathology during pregnancy is associated with negative outcomes in offspring. Increased placental transfer of maternal cortisol may contribute to mediate this association. Hair cortisol concentrations (HCCs) appear to be a good biomarker of long-term prenatal stress exposure. Little is known about the associations between severe maternal psychopathology and perinatal infant HCCs. AIMS We assessed HCCs in the perinatal period in mother-infant dyads with and without severe psychiatric disorders. METHOD We examined group differences in HCCs of mother-infant dyads (n = 18) subjected to severe maternal psychiatric disorders versus healthy control dyads (n = 27). We assessed the correlation of HCCs between mother and infant within both groups, and the association between current maternal symptoms and HCCs in patient dyads. RESULTS Median (interquartile range) and distribution of HCC differed in patients compared with control mothers (U = 468.5, P = 0.03). HCCs in infants of patients did not differ from control infants (U = 250.0, P = 0.67). Subsequently, we found that HCCs within healthy control dyads were correlated (n = 27, r 0.55 (0.14), P = 0.003), but were not within patient dyads (n = 18, r 0.082 (0.13), P = 0.746). HCCs in infants of patients showed a positive correlation with maternal symptoms (n = 16, r = 0.63 (0.06), P = 0.008). CONCLUSIONS These preliminary findings suggest that infant HCC reflect perinatal stress exposure. In infants, these early differences could influence lifetime hypothalamic-pituitary-adrenal axis functioning, which might be associated with increased susceptibility to later disease.
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Affiliation(s)
- Carlinde W Broeks
- Department of Psychiatry, Erasmus University Medical Center, the Netherlands; and Department of Psychiatry, Arkin Institute for Mental Health, the Netherlands
| | - Vandhana Choenni
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University Rotterdam, the Netherlands
| | - Bibian van der Voorn
- Department of Pediatric Endocrinology, Obesity Center CGG, Erasmus MC-Sophia Children's Hospital, the Netherlands; and Division of Endocrinology, Department of Internal Medicine, Erasmus University Medical Center, the Netherlands
| | - Ineke de Kruijff
- Department of Pediatrics, St Antonius Hospital Nieuwegein, the Netherlands
| | | | - Elisabeth F C van Rossum
- Division of Endocrinology, Department of Internal Medicine, Erasmus University Medical Center, the Netherlands
| | | | - Manon H J Hillegers
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands
| | - Astrid M Kamperman
- Department of Psychiatry, Erasmus University Medical Center, the Netherlands; and Epidemiological and Social Psychiatric Research Institute, Erasmus University Medical Center, the Netherlands
| | - Mijke P Lambregtse-Van den Berg
- Department of Psychiatry, Erasmus University Medical Center, the Netherlands; and Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, the Netherlands
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17
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van der Hulst M, Polinder S, de Groot MW, Kok R, Prinzie P, Steegers EAP, Burdorf A, Bertens LCM. The relation between deprivation and healthcare costs for Dutch children. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky214.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - S Polinder
- Erasmus Medical Center, Rotterdam, Netherlands
| | - MW de Groot
- Erasmus Medical Center, Rotterdam, Netherlands
| | - R Kok
- Erasmus University, Rotterdam, Netherlands
| | - P Prinzie
- Erasmus University, Rotterdam, Netherlands
| | | | - A Burdorf
- Erasmus Medical Center, Rotterdam, Netherlands
| | - LCM Bertens
- Erasmus Medical Center, Rotterdam, Netherlands
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18
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van der Hulst M, de Groot MW, de Graaf JP, Kok R, Prinzie P, Burdorf A, Bertens LCM, Steegers EAP. Targeted social care for highly vulnerable pregnant women: protocol of the Mothers of Rotterdam cohort study. BMJ Open 2018; 8:e020199. [PMID: 29549208 PMCID: PMC5857660 DOI: 10.1136/bmjopen-2017-020199] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Social vulnerability is known to be related to ill health. When a pregnant woman is socially vulnerable, the ill health does not only affect herself, but also the health and development of her (unborn) child. To optimise care for highly vulnerable pregnant women, in Rotterdam, a holistic programme was developed in close collaboration between the university hospital, the local government and a non-profit organisation. This programme aims to organise social and medical care from pregnancy until the second birthday of the child, while targeting adult and child issues simultaneously. In 2014, a pilot in the municipality of Rotterdam demonstrated the significance of this holistic approach for highly vulnerable pregnant women. In the 'Mothers of Rotterdam' study, we aim to prospectively evaluate the effectiveness of the holistic approach, referred to as targeted social care. METHODS AND ANALYSIS The Mothers of Rotterdam study is a pragmatic prospective cohort study planning to include 1200 highly vulnerable pregnant women for the comparison between targeted social care and care as usual. Effectiveness will be compared on the following outcomes: (1) child development (does the child show adaptive development at year 1?) and (2) maternal mental health (is maternal distress reduced at the end of the social care programme?). Propensity scores will be used to correct for baseline differences between both social care programmes. ETHICS AND DISSEMINATION The prospective cohort study was approved by the Erasmus Medical Centre Ethics Committee (ref. no. MEC-2016-012) and the first results of the study are expected to be available in the second half of 2019 through publication in peer-reviewed international journals. TRIAL REGISTRATION NUMBER NTR6271; Pre-results.
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Affiliation(s)
- Marije van der Hulst
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Marjolein W de Groot
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Johanna P de Graaf
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Rianne Kok
- Department of Psychology, Education and Child Studies, Erasmus University, Rotterdam, The Netherlands
| | - Peter Prinzie
- Department of Psychology, Education and Child Studies, Erasmus University, Rotterdam, The Netherlands
| | - Alex Burdorf
- Department of Public Health, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
| | - Loes C M Bertens
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Eric A P Steegers
- Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Centre Rotterdam, Rotterdam, The Netherlands
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19
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Kok R, Prinzie P, Bakermans-Kranenburg MJ, Verhulst FC, White T, Tiemeier H, van IJzendoorn MH. Socialization of prosocial behavior: Gender differences in the mediating role of child brain volume. Child Neuropsychol 2017. [PMID: 28627295 DOI: 10.1080/09297049.2017.1338340] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Evidence has been accumulating for the impact of normal variation in caregiving quality on brain morphology in children, but the question remains whether differences in brain volume related to early caregiving translate to behavioral implications. In this longitudinal population-based study (N = 162), moderated mediation was tested for the relation between parental sensitivity and child prosocial behavior via brain volume, in boys and girls. Both maternal and paternal sensitivity were repeatedly observed between 1 and 4 years of age. Brain volume was assessed using magnetic resonance imaging measurements at age 8, and self-reported prosocial behavior of children was assessed at 9 years of age. Parental sensitivity was positively related to child brain volume, and to child prosocial behavior at trend level. Child brain volume was negatively related to child prosocial behavior. A significant gender-by-brain interaction was found, illustrating that daughters of sensitive parents were more prosocial and that less prosocial behavior was reported for girls with a larger total brain volume. Child gender significantly moderated the indirect effect of parental sensitivity on prosocial behavior via total brain volume. A significant indirect pathway was found only in girls. The results warrant replication but indicate the importance of considering gender when studying the behavioral implications of differences in brain volume related to early caregiving experiences.
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Affiliation(s)
- Rianne Kok
- a Department of Psychology Education and Child Studies , Erasmus University, Rotterdam , the Netherlands
| | - Peter Prinzie
- a Department of Psychology Education and Child Studies , Erasmus University, Rotterdam , the Netherlands
| | | | - Frank C Verhulst
- c Department of Child and Adolescent Psychiatry , Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam , the Netherlands.,d Department of Clinical Medicine , University of Copenhagen, Copenhagen , Denmark
| | - Tonya White
- c Department of Child and Adolescent Psychiatry , Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam , the Netherlands.,e Department of Radiology , Erasmus University Medical Center, Rotterdam , the Netherlands
| | - Henning Tiemeier
- c Department of Child and Adolescent Psychiatry , Erasmus University Medical Center-Sophia Children's Hospital, Rotterdam , the Netherlands.,f Department of Epidemiology , Erasmus University Medical Center, Rotterdam , the Netherlands.,g Department of Psychiatry , Erasmus University Medical Center, Rotterdam , the Netherlands
| | - Marinus H van IJzendoorn
- a Department of Psychology Education and Child Studies , Erasmus University, Rotterdam , the Netherlands.,b Centre for Child and Family Studies , Leiden University, Leiden , the Netherlands
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Berm E, Kok R, Hak E, Wilffert B. Relation between CYP2D6 Genotype, Phenotype and Therapeutic Drug Concentrations among Nortriptyline and Venlafaxine Users in Old Age Psychiatry. Pharmacopsychiatry 2016; 49:186-190. [PMID: 27101231 DOI: 10.1055/s-0042-105443] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Objectives: To determine relations between drug concentrations and the cytochrome P450-CYP2D6 genotype or phenotype among elderly patients treated with nortriptyline or venlafaxine. Methods: A post-hoc analysis of a clinical trial was performed. Patients were grouped into phenotypes according to the metabolite/mother compound ratio. Genotypes were assessed by the CYP2D6 *3 and *4 alleles. Results: Data was available from 81 patients (41 nortriptyline, 40 venlafaxine) with a mean age of 72 years. No phenoconversion from poor metabolizers (PM) to extensive metabolizers (EM), or vice versa, was found. However, we did find phenoconversion from PM to intermediate metabolizers (IM), IM to EM, or vice versa in 36% of observations. Among nortriptyline users, patients with a PM or IM genotype had more supra-therapeutic blood levels, although this did not reach statistical significance. In exploratory analyses we found men were more likely (RR: 2.4; 95% CI: 1.14-5.07) to display phenoconversion from an IM genotype to EM phenotype. In addition, compared to non-PMs, PMs were found to have higher risk (RR: 1.56; 95% CI: 1.03-2.37) on non-response, although this was only significant when response was measured on the Hamilton Rating Scale for Depression and not on the Montgomery Åsberg Depression Rating Scale. Conclusion: Patients phenoconversed, but we did not observe phenoconversion from PM to EM or vice versa. Genotype information could be used as a valuable tool, in addition to therapeutic drug monitoring, to prevent supratherapeutic drug levels of nortriptyline or venlafaxine in elderly patients with a PM genotype.
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Affiliation(s)
- E Berm
- Pharmacotherapy and Pharmaceutical Care, University of Groningen, Groningen, Netherlands
| | - R Kok
- Parnassia Psychiatric Institute, Old age, The Hague, Germany
| | - E Hak
- Pharmacoepidemiology and Pharmacoeconomics, University of Groningen, Groningen, Netherlands
| | - B Wilffert
- Pharmacotherapy and Pharmaceutical Care, University of Groningen, Groningen, Netherlands
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Kok R, Thijssen S, Bakermans-Kranenburg MJ, Jaddoe VWV, Verhulst FC, White T, van IJzendoorn MH, Tiemeier H. Normal variation in early parental sensitivity predicts child structural brain development. J Am Acad Child Adolesc Psychiatry 2015; 54:824-831.e1. [PMID: 26407492 DOI: 10.1016/j.jaac.2015.07.009] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 06/24/2015] [Accepted: 07/29/2015] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Early caregiving can have an impact on brain structure and function in children. The influence of extreme caregiving experiences has been demonstrated, but studies on the influence of normal variation in parenting quality are scarce. Moreover, no studies to date have included the role of both maternal and paternal sensitivity in child brain maturation. This study examined the prospective relation between mothers' and fathers' sensitive caregiving in early childhood and brain structure later in childhood. METHOD Participants were enrolled in a population-based prenatal cohort. For 191 families, maternal and paternal sensitivity was repeatedly observed when the child was between 1 year and 4 years of age. Head circumference was assessed at 6 weeks, and brain structure was assessed using magnetic resonance imaging (MRI) measurements at 8 years of age. RESULTS Higher levels of parental sensitivity in early childhood were associated with larger total brain volume (adjusted β = 0.15, p = .01) and gray matter volume (adjusted β = 0.16, p = .01) at 8 years, controlling for infant head size. Higher levels of maternal sensitivity in early childhood were associated with a larger gray matter volume (adjusted β = 0.13, p = .04) at 8 years, independent of infant head circumference. Associations with maternal versus paternal sensitivity were not significantly different. CONCLUSION Normal variation in caregiving quality is related to markers of more optimal brain development in children. The results illustrate the important role of both mothers and fathers in child brain development.
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Affiliation(s)
- Rianne Kok
- Leiden University, Leiden, the Netherlands; Erasmus University, Rotterdam, the Netherlands; Generation R Study Group, Rotterdam, the Netherlands
| | - Sandra Thijssen
- Erasmus University, Rotterdam, the Netherlands; Generation R Study Group, Rotterdam, the Netherlands
| | | | - Vincent W V Jaddoe
- Generation R Study Group, Rotterdam, the Netherlands; Erasmus MC: University Medical Center in Rotterdam, Rotterdam, the Netherlands
| | - Frank C Verhulst
- Erasmus MC: University Medical Center in Rotterdam, Rotterdam, the Netherlands
| | - Tonya White
- Erasmus MC: University Medical Center in Rotterdam, Rotterdam, the Netherlands
| | | | - Henning Tiemeier
- Erasmus MC: University Medical Center in Rotterdam, Rotterdam, the Netherlands.
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Lucassen N, Kok R, Bakermans-Kranenburg MJ, Van Ijzendoorn MH, Jaddoe VWV, Hofman A, Verhulst FC, Lambregtse-Van den Berg MP, Tiemeier H. Executive functions in early childhood: the role of maternal and paternal parenting practices. Br J Dev Psychol 2015; 33:489-505. [PMID: 26359942 DOI: 10.1111/bjdp.12112] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [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: 07/03/2014] [Revised: 05/23/2015] [Indexed: 11/28/2022]
Abstract
We investigated the association between mothers' and fathers' harsh parenting and sensitive parenting practices and child's executive functions (EF) in early childhood in 607 families. We focused on three broad dimensions of child EF: Emergent metacognition, inhibitory self-control, and flexibility measured with the parent-reported Behavior Rating Inventory of Executive Function-Preschool Version. Less sensitive parenting of the mother and harsher parenting of the father were related to lower scores of emergent metacognition and inhibitory self-control. Parenting was not associated with child flexibility. This study extends previous research on the association between parenting and EF by the focus on the role of the father and demonstrates independent effects of mother and father on child EF.
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Affiliation(s)
- Nicole Lucassen
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, The Netherlands.,The Generation R Study, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Pedagogical and Educational Sciences, Erasmus University Rotterdam, The Netherlands
| | - Rianne Kok
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, The Netherlands.,The Generation R Study, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Pedagogical and Educational Sciences, Erasmus University Rotterdam, The Netherlands
| | | | - Marinus H Van Ijzendoorn
- Department of Pedagogical and Educational Sciences, Erasmus University Rotterdam, The Netherlands.,Centre for Child and Family Studies, Leiden University, Leiden, The Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Frank C Verhulst
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Mijke P Lambregtse-Van den Berg
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Psychiatry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands.,Department of Psychiatry, Erasmus University Medical Center, Rotterdam, The Netherlands
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Dierckx B, Kok R, Tulen JH, Jaddoe VW, Hofman A, Verhulst FC, Bakermans-Kranenburg MJ, van Ijzendoorn MH, Tiemeier H. A prospective study of heart rate and externalising behaviours in young children. Int J Psychophysiol 2014. [DOI: 10.1016/j.ijpsycho.2014.08.763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Cents RAM, Kok R, Tiemeier H, Lucassen N, Székely E, Bakermans-Kranenburg MJ, Hofman A, Jaddoe VWV, van IJzendoorn MH, Verhulst FC, Lambregtse-van den Berg MP. Variations in maternal 5-HTTLPR affect observed sensitive parenting. J Child Psychol Psychiatry 2014; 55:1025-32. [PMID: 24484301 DOI: 10.1111/jcpp.12205] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/28/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND Little is known about the genetic determinants of sensitive parenting. Two earlier studies examined the effect of the serotonin transporter polymorphism (5-HTTLPR) on sensitive parenting, but reported opposite results. In a large cohort we further examined whether 5-HTTLPR is a predictor of observed maternal sensitivity and whether observed child social fearfulness moderates the effect of 5-HTTLPR on maternal sensitivity. METHODS The population-based cohort consisted of 767 mother-child dyads. Maternal sensitivity was repeatedly observed at the child's age of 14 months, 36 months and 48 months. Sensitivity was coded using the Ainsworth's rating scales for sensitivity and cooperation and the revised Erickson rating scales for Supportive presence and Intrusiveness. Child social fearfulness was observed using the Stranger Approach episode of the Laboratory Temperament Assessment Battery at 36 months. RESULTS Repeated measurement analyses showed a consistent main effect of maternal 5-HTTLPR on sensitivity; mothers carrying the S-allele were more sensitive toward their children (p = .005). This effect was not explained by the child's 5-HTTLPR genotype. We found no evidence that child social fearfulness moderated the effect of 5-HTTLPR on sensitivity. CONCLUSIONS This study suggests that variations in maternal 5-HTTLPR genotype appear to be involved in the etiology of parenting behavior. The observed effects of this genetic variation are consistent with the notion that parenting may have a genetic component, but large studies are needed to find the specific small molecular effects.
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Affiliation(s)
- Rolieke A M Cents
- The Generation R Study Group, Erasmus MC-University Medical Centre, Rotterdam, The Netherlands; Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC-University Medical Centre, Rotterdam, The Netherlands
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Dierckx B, Kok R, Tulen JH, Jaddoe VW, Hofman A, Verhulst FC, Bakermans-Kranenburg MJ, van Ijzendoorn MH, Tiemeier H. A prospective study of heart rate and externalising behaviours in young children. J Child Psychol Psychiatry 2014; 55:402-10. [PMID: 24795956 DOI: 10.1111/jcpp.12175] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Low heart rate predicts externalising and delinquent behaviour in adults, adolescents and school-age children. In younger children the evidence is less clear. Moreover, the specificity of the relation between the autonomic nervous system and different forms of externalising behaviour is uncertain. We investigated the longitudinal relation between resting mean heart rate and different externalising behaviours. METHODS In 412 children of the Generation R Study, we measured resting mean heart rate at 14 months. At 3 years, child problem behaviour was assessed by the mother with the Child Behavior Checklist. In a gift delay task, we observed whether children were compliant and whether they lied about their noncompliance. The association of heart rate with behaviour was contrasted with the effect of harsh parenting. RESULTS In our main analysis, we examined the association between heart rate and reported and observed child behaviour. For comparison, the association of heart rate with behaviour was contrasted with the effect of harsh parenting. Mean heart rate was positively associated with Anxious/Depressed scale scores (β = .1, 95% CI = 0.01; 0.2, p = .04), but not with Aggressive Behaviour (β = .02; 95% CI = −0.1; 0.1, p = .8) nor Attention Problem scale scores (β = .08, 95% CI = −0.3; 0.5, p = .8). We could not demonstrate an association between mean heart rate and noncompliance during the gift delay task (OR = 1.14, 95% CI = 0.9; 1.1, p = .2), but lower heart rate predicted higher odds of the child lying (OR = 0.56, 95% CI = 0.3; 0.9, p = .03). In contrast, harsh parenting was associated with mother-reported Aggressive Behaviour (β = .7, 95% CI = 0.4; 0.9, p < .001) and Attention Problems (β = .2, 95% CI = 0.1; 0.3, p < .001), but not with observed lying (OR = 1.03, 95% CI = 0.8; 1.4, p = .8). CONCLUSIONS Lower resting mean heart rate at age 14 months predicts low anxiety symptoms and higher odds of lying at age 3 years. Low resting mean heart rate may be less an indicator of early childhood aggression than of fearless behaviour.
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Affiliation(s)
- Bram Dierckx
- The Generation R Study Group; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Child and Adolescent Psychiatry/Psychology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Rianne Kok
- Centre for Child and Family Studies; Leiden University; Leiden The Netherlands
| | - Joke H.M. Tulen
- Department of Psychiatry; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Vincent W. Jaddoe
- The Generation R Study Group; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Epidemiology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Paediatrics; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Albert Hofman
- Department of Epidemiology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | - Frank C. Verhulst
- Department of Child and Adolescent Psychiatry/Psychology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
| | | | - Marinus H. van Ijzendoorn
- Centre for Child and Family Studies; Leiden University; Leiden The Netherlands
- School for Pedagogical and Educational Sciences; Erasmus University Rotterdam; Rotterdam The Netherlands
| | - Henning Tiemeier
- Department of Child and Adolescent Psychiatry/Psychology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Psychiatry; Erasmus MC University Medical Centre; Rotterdam The Netherlands
- Department of Epidemiology; Erasmus MC University Medical Centre; Rotterdam The Netherlands
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Abstract
Street food vending has and is becoming globally a convenient and in most cases an essential service. Lifestyle changes and socio economic factors creates very little space for consumers to look at other alternatives one of which would be to prepare one’s own meal. Street food therefore becomes an easy and economic means to acquire prepared food. Safe hygiene practices should become integral to the vendor as the product will be consumed by people of all ages and many may be vulnerable to poor quality food. The street food vendor in turn relies on this service as a means of employment and income generation. The competition between vendors is increased and the pressure to cut corners becomes a reality and one significant corner is appropriate hygiene practices. The practice of appropriate hygiene practices is also as a result of total ignorance of many vendors and the nature of the food that they prepare. The paper explores lessons from various countries in respect of dealing with ensuring good hygiene practices of street food vendors and its usefulness to the South African perspective. One such initiative is the programme launched by the India’s Food Safety and Standards Authority and the National Association of Street Vendors of India. South African street food industry is rapidly increasing in size and proportion. Several studies have been undertaken to look at this operation from various perspectives including hygiene practices and small business. Employment creation has become a national imperative of the country and small business development is seen as a significant component to employment creation. This paper sets out to establish the global practices in street food vending from a hygiene perspective and its relevance to the South African context.
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Kok R, Lucassen N, Bakermans-Kranenburg MJ, van IJzendoorn MH, Ghassabian A, Roza SJ, Govaert P, Jaddoe VW, Hofman A, Verhulst FC, Tiemeier H. Parenting, corpus callosum, and executive function in preschool children. Child Neuropsychol 2013; 20:583-606. [DOI: 10.1080/09297049.2013.832741] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Zullino D, Achab S, Thorens G, Khan R, Manghi R, Khazaal Y, Lallemand F, Ward R, De Witte P, Caroli D, Rosa-Rizzotto E, Peraro L, Cocchio S, Baldo V, Simoncello I, Vendramin A, De Lazzari F, Lobello S, Van den Berg J, Hermes J, Van den Brink W, Blanken P, Kist N, Kok R. O6 * FREE ORAL COMMUNICATIONS 6: PSYCHOSOCIAL FACTORS AND ALCOHOL USE DISORDERS. Alcohol Alcohol 2013. [DOI: 10.1093/alcalc/agt112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kok R, van IJzendoorn MH, Linting M, Bakermans-Kranenburg MJ, Tharner A, Luijk MPCM, Székely E, Jaddoe VWV, Hofman A, Verhulst FC, Tiemeier H. Attachment insecurity predicts child active resistance to parental requests in a compliance task. Child Care Health Dev 2013; 39:277-87. [PMID: 22394322 DOI: 10.1111/j.1365-2214.2012.01374.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM We studied the effects of early mother-child relationship quality and child temperament on the development of child compliance and active resistance in a large population-based cohort study (n = 534). BACKGROUND Parenting and the quality of the parent-child relationship can either hamper or support the development of child compliance directly or in interplay with child temperament. METHODS Mother-infant dyads were observed at 14 and 36 months and maternal and child behaviours were independently coded. The quality of compliance was assessed at 36 months in a clean-up task. Child behaviour was coded using a system differentiating between two dimensions: Compliance and Active Resistance. RESULTS Controlling for concurrent maternal sensitivity, child temperament, and gender children with a more insecure attachment relationship showed higher levels of active resistance during Clean-Up than more securely attached children. The effect was stronger for boys than for girls and mainly driven by attachment avoidance. CONCLUSIONS Early attachment is an important contributor to child socialization of moral behaviour.
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Affiliation(s)
- R Kok
- Centre for Child and Family Studies, Leiden University, Leiden, The Netherlands
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Abstract
BACKGROUND Guidelines and mental healthcare models suggest the use of psychological treatment for anxiety disorders in primary care but systematic estimates of the effect sizes in primary care settings are lacking. The aim of this study was to examine the effectiveness of psychological therapies in primary care for anxiety disorders. METHOD The Cochrane Central Register of Controlled Trials (CENTRAL), EMBASE, Medline, PsycINFO and Pubmed databases were searched in July 2010. Manuscripts describing psychological treatment for anxiety disorders/increased level of anxiety symptoms in primary care were included if the research design was a randomized controlled trial (RCT) and if the psychological treatment was compared with a control group. RESULTS In total, 1343 abstracts were identified. Of these, 12 manuscripts described an RCT comparing psychological treatment for anxiety with a control group in primary care. The pooled standardized effect size (12 comparisons) for reduced symptoms of anxiety at post-intervention was d = 0.57 [95% confidence interval (CI) 0.29-0.84, p = 0.00, the number needed to treat (NNT) = 3.18]. Heterogeneity was significant among the studies (I 2 = 58.55, Q = 26.54, p < 0.01). The quality of studies was not optimal and missing aspects are summarized. CONCLUSIONS We found a moderate effect size for the psychological treatment of anxiety disorders in primary care. Several aspects of the treatment are related to effect size. More studies are needed to evaluate the long-term effects given the chronicity and recurrent nature of anxiety.
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Affiliation(s)
- W Seekles
- Department of Clinical Psychology, VU University, Amsterdam, The Netherlands.
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Kok R, Bakermans-Kranenburg MJ, van IJzendoorn MH, Velders FP, Linting M, Jaddoe VW, Hofman A, Verhulst FC, Tiemeier H. The role of maternal stress during pregnancy, maternal discipline, and child COMT Val158Met genotype in the development of compliance. Dev Psychobiol 2012; 55:451-64. [DOI: 10.1002/dev.21049] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 04/23/2012] [Indexed: 01/15/2023]
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Maas C, Kok R, Segers P, Boogaart A, Eilander S, Haalebos MM, Leicher FG, Bakhuizen R. The use of the Biomedicus centrifugal pump in combination with a separate reservoir with integrated heat exchanger in aneurysms of the thoracic aorta. Perfusion 1999; 7:273-81. [PMID: 10148024 DOI: 10.1177/026765919200700405] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The surgical correction of aneurysms in the descending thoracic aorta necessitates clamping the aorta both proximal and distal to the aneurysm. The affected length can vary from a few centimetres to large portions of the upper and lower descending aorta. Clamping times can vary from a few minutes to more than one hour. No matter which technique is applied, these operations are often accompanied by excessive blood loss and the need for rapid transfusion, resulting in substantial haemodynamic fluctuations. Hypothermia may become a problem in these patients because most blood warmers are unable to warm blood adequately ( greater than 35 degrees C) at high flow rates (>100 cc/min). This may result in clotting problems. For this reason, our clinic decided from November 1990 to integrate a reservoir with its own heat exchanger (Cobe) into our left-left bypass system. This system largely regulates transfusion during partial extracorporeal circulation (PECC). The advantages of such a system are that (1) the transfusion rate can be adapted to blood loss and is not dependent on the quality and quantity of the infusion systems; (2) blood products and other infusion liquids are filtered; and (3) the transfusion blood is warmed. In this article, we describe our experience with this application of PECC on three patients who suffered excessive blood loss during operations for large thoracic aneurysms.
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Affiliation(s)
- C Maas
- Department of Extra Corporeal Circulation, Weezenlanden Hospital, Zwolle, The Netherlands
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Maas C, Kok R, Segers P, Boogaart A, Eilander S, de Vries I, Ennema J, van der Starre PJ, Leicher FG, Haalebos MM. Intermittent antegrade/selective cerebral perfusion during circulatory arrest for repair of the aortic arch. Perfusion 1997; 12:127-32. [PMID: 9160364 DOI: 10.1177/026765919701200207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
If the aortic arch requires repair or replacement due to an aneurysm or dissection, conventional cardiopulmonary bypass (CPB) is not possible during the period in which the aortic arch is excluded from the circulation. This creates a situation in which there is no cerebral circulation. The brain needs adequate protection from this ischaemic insult. Hypothermic circulatory arrest (HCA), antegrade/selective cerebral perfusion (ASCP) and retrograde cerebral perfusion (RCP) are reported to exhibit their cerebral protective capabilities during procedures involving the aortic arch. HCA can provide adequate protection in procedures of short duration and avoids the complications associated with cerebral perfusion techniques. The main disadvantage of HCA is that the 'safe' duration of circulatory arrest is not clearly defined. Topical cooling of the head may enhance cerebral hypothermia and provide additional protection. If longer periods of circulatory arrest are anticipated or occur unexpectedly, we suggest that ASCP can offer improved cerebral protection by providing adequate brain perfusion and improved cerebral cooling. By using a coronary sinus perfusion catheter as a carotid artery cannula, it is not necessary to snare or clamp the carotid arteries. This technique minimizes the chance of damaging the carotid arteries. In this report, we describe our set-up and ASCP perfusion protocol for the surgical repair of an aortic arch aneurysm.
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Affiliation(s)
- C Maas
- Department of Extracorporeal Circulation, Weezenlanden Hospital, Zwolle, The Netherlands
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Bompensieri S, Gonzalez R, Kok R, Miranda MV, Nutgeren-Roodzant I, Hellingwerf KJ, Cascone O, Nudel BC. Purification of a lipase from Acinetobacter calcoaceticus AAC323-1 by hydrophobic-interaction methods. Biotechnol Appl Biochem 1996; 23:77-81. [PMID: 8867899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The performance of hydrophobic-interaction chromatography (HIC) for the purification of Acinetobacter calcoaceticus AAC323-1 lipase was compared with that of various aqueous two-phase systems. While a 42% lipase yield with a purification factor of 140 could be recovered by HIC, higher yields were achieved by using aqueous two-phase systems, either those formed by poly(ethylene glycol) and dextran or those based upon the use of a detergent. Triton X-114-based aqueous two-phase partition showed the best performance, with a yield of 81% and a purification factor of 68. Further detergent removal was easily achieved with an adsorbent, with no significant decrease in yields. Owing to its simplicity, the method should be easy to scale-up.
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Affiliation(s)
- S Bompensieri
- Cátedra de Microbiología Industrial y Biotecnología, Universidad de Buenos Aires, Argentina
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van der Waarde JJ, Kok R, Janssen DB. Cometabolic degradation of chloroallyl alcohols in batch and continuous cultures. Appl Microbiol Biotechnol 1994. [DOI: 10.1007/bf00170240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mudde AH, Kok R. [Hypercalcemia caused by lithium medication in a female patient with a bipolar affective disorder]. Ned Tijdschr Geneeskd 1993; 137:2549-51. [PMID: 8272143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In a 68-year-old woman, who used lithium carbonate because of longstanding recurring depression, an association was found between hypercalcaemia and the use of lithium. The serum calcium concentration appeared to be significantly correlated with the serum lithium concentration (y = 2.38 + 0.37x; r = 0.36; p = 0.009). There was a significant inverse correlation between the ratio of 24-hour urinary calcium and creatinine excretion and the serum lithium concentration (y = 0.80 - 0.22x; r = 0.43; p = 0.030). The association of hypercalcaemia and use of lithium has been reported before. The finding may be due to an effect of lithium on the parthyroids and (or) on the kidneys.
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Affiliation(s)
- A H Mudde
- Afd. Interne Geneeskunde, Slingeland Ziekenhuis, Doetinchem
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Bettermann H, Kleist E, Kok R. The determination of absorption cross sections and line profiles in vibrational overtone spectra with the use of intracavity absorption spectroscopy. J Mol Struct 1993. [DOI: 10.1016/0022-2860(93)80317-o] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
Three Pseudomonas strains capable of utilizing 2-chloroallylalcohol (2-chloropropenol) as the sole carbon source for growth were isolated from soil. The fastest growth was observed with strain JD2, with a generation time of 3.6 h. Degradation of 2-chloroallylalcohol was accompanied by complete dehalogenation. Chloroallylalcohols that did not support growth were dechlorinated by resting cells; the dechlorination level was highest if an alpha-chlorine substituent was present. Crude extracts of strain JD2 contained inducible alcohol dehydrogenase activity that oxidized mono- and dichloroallylalcohols but not trichloroallylalcohol. The enzyme used phenazine methosulfate as an artificial electron acceptor. Further oxidation yielded 2-chloroacrylic acid. The organism also produced hydrolytic dehalogenases converting 2-chloroacetic acid and 2-chloropropionic acid.
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Abstract
Three Acinetobacter calcoaceticus transformation-deficient mutants, obtained by insertional mutagenesis with the nptll gene, have been characterized physiologically. One mutant (AAC211) was found to be completely transformation deficient, while two others, AAC213 and AAC214, were severely impaired in transformation efficiency (100-1000 times lower than the wild type). The latter applied to both chromosomal as well as plasmid DNA. Analysis of the chromosomal DNA fragments flanking the nptll gene in the mutants showed that mutants AAC213 and AAC214 had an insertion of the nptll gene in the same chromosomal region, but that they were the result of two independent mutational events, whereas the insertion in mutant AAC211 was at a different position. None of the three mutants showed phenotypic or genotypic characteristics typical of a RecA-deficient strain.
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Affiliation(s)
- R Palmen
- Department of Microbiology, University of Amsterdam, The Netherlands
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Abstract
The cDNA of mouse pancreatic mRNA has been cloned. After the library was screened with a rat ribonuclease cDNA probe, the positive clones were isolated and sequenced. There were no differences from the previously determined protein sequence. The mRNA codes for a preribonuclease of 149 amino acid residues including a signal peptide of 25 amino acids. The 3' noncoding region has a length of 260 bp, and the total mRNA length is approximately 940 bp. Comparison with the rat pancreatic ribonuclease sequence showed a high rate of nucleotide substitution. Within the coding region, nonsynonymous and synonymous substitution rates are 4.3 X 10(-9) and 15 X 10(-9) nucleotide substitutions/site/year, respectively. The latter value is one of the highest rates observed in the molecular evolution of mammalian nuclear genes. In the signal sequences the synonymous substitution rate is much lower and about the same as the nonsynonymous rate. Signal sequences of other mouse and rat proteins also exhibit little difference between synonymous and nonsynonymous rates. The sequences of rat and mouse pancreatic ribonuclease messengers were compared with those of bovine pancreatic, seminal, and brain ribonuclease. While the 3' noncoding regions of rat and mouse are very similar, as are those of the three bovine messengers, there is no significant similarity between both rodent and the three bovine messengers for the greater part of these regions. There is a duplication of approximately 50 nucleotides in the 3' noncoding region of the bovine messengers, with a region rich in A and C in between. The presence of this structural feature may be correlated with recent gene duplications that have occurred in the bovine genome.
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Affiliation(s)
- C Schüller
- Biochemisch Laboratorium, Rijksuniversiteit Groningen, The Netherlands
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Abstract
The effect of manure concentration on the growth of the heterogeneous microbial population under batch condition was studied. Four manure concentrations were used in the study. The dehydrogenase activity was used as a measure of the active biomass in the manure. The chemical oxygen demand test was used to measure the change in organic material caused by biological activities. The growth curve of the heterogeneous microbial population in swine manure was essentially similar to that of a pure culture grown batchwise in that it had the four principle phases: lag, exponential growth, stationary, and death. The exponential growth phase followed a diauxic growth pattern. High concentration of manure had an inhibitory effect on the microbial growth. Manure diluted less than 1:3 (manure:water) depressed the specific growth rate of the microbial population.
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Affiliation(s)
- A E Ghaly
- Department of Agricultural Engineering, Technical University of Nova Scotia, Halifax, Canada
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Jakobs C, Douwes AC, Kok R, de Jong A, Endres W, Shin YS. Elevated plasma galactitol levels in patients with congenital cataracts without apparent enzyme defect. Eur J Pediatr 1988; 147:446. [PMID: 3396605 DOI: 10.1007/bf00496438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Meese GB, Schiefer RE, Küstner P, Kok R, Lewis MI. Subjective comfort vote and air temperature as predictors of performance in factory workers. Eur J Appl Physiol Occup Physiol 1986; 55:195-7. [PMID: 3699007 DOI: 10.1007/bf00715004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Volunteer factory workers performed a series of tests in a mobile climate laboratory. The tests simulated factory skills and were performed at 6 degrees, 12 degrees, 18 degrees or 24 degrees C at low vapour pressures. At each temperature four groups of about 30 workers were tested: black men, and women and white men and women. A first order polynomial was used to fit the data for temperature and comfort vote. The comfort vote predicted about 6% of performance, temperature about 11%. On some manual tasks air temperature predicted more than 40% of performance. There were few differences between the groups.
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Abstract
The relationship between finger skin temperature (FST) and performance was demonstrated with four manual dexterity tasks all of which were performed by black and white, male and female subjects. At air temperatures below 24 degrees C the white subjects tended to have warmer FSTs than the black subjects; white subjects were also able to equal the performance of the black subjects at air temperatures as much as 6 degrees C below that required by the black subjects.
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Affiliation(s)
- R E Schiefer
- National Building Research Institute, Council for Scientific and Industrial Research, PO Box 395, Pretoria 0001, South Africa
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Meese GB, Kok R, Lewis MI, Wyon DP. A laboratory study of the effects of moderate thermal stress on the performance of factory workers. Ergonomics 1984; 27:19-43. [PMID: 6705759 DOI: 10.1080/00140138408963461] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Senay LC, Kok R. Effects of training and heat acclimatization on blood plasma contents of exercising men. J Appl Physiol Respir Environ Exerc Physiol 1977; 43:591-9. [PMID: 908673 DOI: 10.1152/jappl.1977.43.4.591] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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