Moderation of the association between childhood maltreatment and neuroticism by the corticotropin-releasing hormone receptor 1 gene

Background: Neuroticism is a personality trait reflecting the tendency to experience negative affect. It is a major risk for psychopathology, especially depression and anxiety disorders. Childhood maltreatment is another major risk factor for psychopathology and may influence personality. Maltreatment may interact with genotype to predict developmental outcomes. Variation in three polymorphisms of the CRHR1 gene has been found to moderate the association of childhood maltreatment with depression, and we hypothesized that it would also be linked to neuroticism. Methods: Variation in three CRHR1 SNPs (rs110402, rs242924, rs7209436) was assessed in 339 maltreated and 275 demographically similar nonmaltreated children, who participated in a day camp research program. Maltreated children were further categorized based on the number of types of maltreatment they had experienced and the most severe form of maltreatment experienced. Genotype and maltreatment status were used to predict the Big Five personality traits, as assessed by camp counselors following a week of interaction with children. Results: CRHR1 genotype significantly moderated the association of maltreatment with neuroticism but none of the other traits. Having two copies of the TAT haplotype of CRHR1 was associated with higher levels of neuroticism among maltreated children relative to nonmaltreated children, with the exception of sexually abused children and children who had experienced 3 or 4 types of abuse. Effects sizes of these interactions ranged from η² = .01 (p = .02) to η² = .03 (p = .006). Conclusions: Variation in CRHR1 moderates the association of maltreatment with neuroticism. The effects of specific types of maltreatment on neuroticism are differentially moderated by CRHR1 genotype, as are the effects of experiencing more or fewer types of maltreatment.     

Risk factors for recurrence of maltreatment: a systematic review

Background

Children who have been maltreated are at increased risk of further maltreatment. Competent identification of those at highest risk of further maltreatment is an important part of safe and effective practice, but is a complex and demanding task.

Aim

To systematically review the research base predicting those children at highest risk of recurrent maltreatment.

Methods

Systematic review of cohort studies investigating factors associated with substantiated maltreatment recurrence in children.

Results

Sixteen studies met the inclusion criteria. The studies were heterogeneous. A variety of forms of maltreatment were considered. Four factors were most consistently identified as predicting future maltreatment: number of previous episodes of maltreatment; neglect (as opposed to other forms of maltreatment); parental conflict; and parental mental health problems. Children maltreated previously were approximately six times more likely to experience recurrent maltreatment than children who had not previously been maltreated. The risk of recurrence was highest in the period soon after the index episode of maltreatment (within 30 days), and diminished thereafter.

Conclusions

There are factors clearly associated with an increased risk of recurrent maltreatment, and these should be considered in professional assessments of children who have been maltreated. A comprehensive approach to risk assessment, including but not solely based on these factors, is likely to lead to interventions which offer greater protection to children.     

Reduced orbitofrontal and temporal grey matter in a community sample of maltreated children

Background: Childhood maltreatment is strongly associated with increased risk of psychiatric disorder. Previous neuroimaging studies have reported atypical neural structure in the orbitofrontal cortex, temporal lobe, amygdala, hippocampus and cerebellum in maltreated samples. It has been hypothesised that these structural differences may relate to increased psychiatric vulnerability. However, previous studies have typically recruited clinical samples with concurrent psychiatric disorders, or have poorly characterised the range of maltreatment experiences and levels of concurrent anxiety or depression, limiting the interpretation of the observed structural differences. Methods: We used voxel‐based morphometry to compare grey matter volume in a group of 18 children (mean age 12.01 years, SD = 1.4), referred to community social services, with documented and well‐characterised experiences of maltreatment at home and a group of 20 nonmaltreated children (mean age 12.6 years, SD = 1.3). Both groups were comparable on age, gender, cognitive ability, ethnicity and levels of anxiety, depression and posttraumatic stress symptoms. We examined five a priori regions of interest: the prefrontal cortex, temporal lobes, amygdala, hippocampus and cerebellum. Results: Maltreated children, compared to nonmaltreated peers, presented with reduced grey matter in the medial orbitofrontal cortex and the left middle temporal gyrus. Conclusions: The medial orbitofrontal cortex and the middle temporal gyrus have been implicated in reinforcement‐based decision‐making, emotion regulation and autobiographical memory, processes that are impaired in a number of psychiatric disorders associated with maltreatment. We speculate that grey matter disturbance in these regions in a community sample of maltreated children may represent a latent neurobiological risk factor for later psychopathology and heightened risk taking.     

Effects of chronic maltreatment and maltreatment timing on children’s behavior and cognitive abilities

Background: Chronic maltreatment has been associated with the poorest developmental outcomes, but its effects may depend on the age when the maltreatment began, or be confounded by co‐occurring psychosocial risk factors. Method: We used data from the National Survey of Child and Adolescent Well‐Being (NSCAW) to identify four groups of children who varied in the timing, extent, and continuity of their maltreatment from birth to 9 years. Internalizing and externalizing problems, prosocial behavior, and IQ were assessed 21 months, on average, following the most recent maltreatment report. Results: Children maltreated in multiple developmental periods had more externalizing and internalizing problems and lower IQ scores than children maltreated in only one developmental period. Chronically maltreated children had significantly more family risk factors than children maltreated in one developmental period and these accounted for maltreatment chronicity effects on externalizing and internalizing problems, but not IQ. The timing of maltreatment did not have a unique effect on cognitive or behavioral outcomes, although it did moderate the effect of maltreatment chronicity on prosocial behavior. Conclusion: There is a need for early intervention to prevent maltreatment from emerging and to provide more mental health and substance use services to caregivers involved with child welfare services.     

Emotion regulation predicts attention bias in maltreated children at-risk for depression

Background: Child maltreatment is associated with heightened risk for depression; however, not all individuals who experience maltreatment develop depression. Previous research indicates that maltreatment contributes to an attention bias for emotional cues, and that depressed individuals show attention bias for sad cues. Method: The present study examined attention patterns for sad, depression‐relevant cues in children with and without experience of maltreatment. We also explored whether individual differences in physiological reactivity and emotion regulation in response to a sad emotional state predict heightened attention to sad cues associated with depression. Results: Children who experienced high levels of maltreatment showed an increase in attention bias for sad faces throughout the course of the study, such that they showed biased attention for sad faces following the initiation of a sad emotional state. Maltreated children who had high levels of trait rumination showed an attention bias toward sad faces across all time points. Conclusions: These data suggest that maltreated children show heightened attention for depression‐relevant cues in certain contexts (e.g. after experience of a sad emotional state). Additionally, maltreated children who tend to engage in rumination show a relatively stable pattern of heightened attention for depression‐relevant cues. These patterns may identify which maltreated children are most likely to exhibit biased attention for sad cues and be at heightened risk for depression.     

Radiological features of child maltreatment

Child maltreatment is serious, highly prevalent and topical. Approximately 1% of children are neglected or psychologically maltreated and 4%–16% are physically abused each year.     

Demographic characteristics and needs of the Canadian urban adolescent mother and her child

INTRODUCTION:

There is a paucity of Canadian-based literature on urban adolescent mothers and their children. To inform clinical assessment and interventions and to mitigate the risks that adolescent mothers and their children face, it is essential to understand the characteristics of this high-risk population.

METHODS:

A retrospective review of 116 adolescent mothers attending an urban academic hospital-based outpatient clinic in Canada from 2005 to 2009 was conducted. The following information was collected: demographic characteristics, maternal maltreatment history, substance use, postpartum depression symptoms, and child socioemotional and developmental functioning.

RESULTS:

The mean maternal age was 16.1 years and the mean education level was grade 9. Ninety-nine percent of adolescent mothers were single, 47% had a history of child welfare involvement and 18% had previous involvement with the judicial system. More than one-half of participants reported a history of both maltreatment and substance abuse, and 20% of adolescent mothers scored in the clinical range for postpartum depression. A substantial proportion of children scored in the clinical range for behavioural problems, regulatory difficulties and suspected developmental delays.

CONCLUSION:

The present study serves to illustrate the high-risk nature of urban adolescent mothers. These observations can be used to improve clinical practice for health care providers in community and hospital-based settings working with this population.     

Annual Research Review: Umbrella synthesis of meta-analyses on child maltreatment antecedents and interventions: differential susceptibility perspective on risk and resilience

Child maltreatment in the family context is a prevalent and pervasive phenomenon in many modern societies. The global perpetration of child abuse and neglect stands in stark contrast to its almost universal condemnation as exemplified in the United Nation’s Convention on the Rights of the Child. Much work has been devoted to the task of prevention, yet a grand synthesis of the literature is missing. Focusing on two core elements of prevention, that is, antecedents for maltreatment and the effectiveness of (preventative) interventions, we performed an umbrella review of meta-analyses published between January 1, 2014, and December 17, 2018. Meta-analyses were systematically collected, assessed, and integrated following a uniform approach to allow their comparison across domains. From this analysis of thousands of studies including almost 1.5 million participants, the following risk factors were derived: parental experience of maltreatment in his or her own childhood (d = .47), low socioeconomic status of the family (d = .34), dependent and aggressive parental personality (d = .45), intimate partner violence (d = .41), and higher baseline autonomic nervous system activity (d = .24). The effect size for autonomic stress reactivity was not significant (d = −.10). The umbrella review of interventions to prevent or reduce child maltreatment showed modest intervention effectiveness (d = .23 for interventions targeting child abuse potential or families with self-reported maltreatment and d = .27 for officially reported child maltreatment cases). Despite numerous studies on child maltreatment, some large gaps in our knowledge of antecedents exist. Neurobiological antecedents should receive more research investment. Differential susceptibility theory may shed more light on questions aimed at breaking the intergenerational transmission of maltreatment and on the modest (preventive) intervention effects. In combination with family-based interaction-focused interventions, large-scale socioeconomic experiments such as cash transfer trials and experiments with vouchers to move to a lower-poverty area might be tested to prevent or reduce child maltreatment. Prevalence, antecedents, and preventive interventions of prenatal maltreatment deserve continuing scientific, clinical, and policy attention.     

A descriptive survey of Swedish child health nurses' awareness of abuse and neglect. II. Characteristics of the children

AIM: To determine whether children considered by child health nurses to be at risk of abuse or neglect differed from the general population in gender, age and health status, and whether such child characteristics were related to nurses' perceptions of case seriousness, or to reporting to the child protection services (CPS). METHODS: Questionnaires were sent to nurses in the preventive Child Health Services, 951 of whom identified a total of 6044 children aged 0 to 6 y as suspected of risk of maltreatment. RESULTS: Boys and older children were over-represented among the identified children, possibly because the attention of the nurses was attracted by salient symptoms in older boys. Children with health problems and boys exposed to disturbed parenting/neglect were perceived as more serious cases than other children. Children aged 4-6 y were more likely to be reported to the CPS than children under 3 y of age. CONCLUSION: The findings raise the question whether possibly maltreated children who are very young, female or in good health run a particularly high risk of non-detection, of being considered non-serious cases and of not being reported to the CPS. The risk of going unnoticed may be higher for some children at risk of maltreatment than for others.     

A prospective analysis of the relationship between reported child maltreatment and special education eligibility among poor children

This study presents data from the first large-scale longitudinal study to track the involvement of children reported for maltreatment in both the special education and child welfare systems. A range of state and local administrative databases were combined and cross-sector service histories were established for 7,940 children who had received Aid to Families With Dependent Children between 1993 and 1994. The authors address the following questions: (a) Is maltreatment associated with entry into special education after controlling for other factors? (b) among maltreated children, does maltreatment type or child welfare service use predict special education eligibility? and (c) what is the relationship between maltreatment type and type of educational disability? Results indicate that child maltreatment system involvement generally predates special education entry and is predictive of entry even after controlling for other factors. A range of other associations between factors such as child and maternal characteristics, services received, maltreatment type, and special education classification are detailed.     

The impact of childhood maltreatment on biological systems: Implications for clinical interventions

Childhood maltreatment represents a significant risk factor for the development of a number of mental and physical health outcomes. Converging evidence suggests that early adversity induces significant and persistent biological changes in individuals (‘biological embedding’). The present review focuses on the impact of childhood maltreatment on the hypothalamic-pituitary-adrenal axis and immune system function in both children and adults. Research suggests that childhood maltreatment is associated with hypothalamic-pituitary-adrenal axis dysregulation and diurnal cortisol profiles, as well as stress reactivity. Furthermore, childhood maltreatment is associated with disruptions in various immune system markers including pro- and anti-inflammatory substances, and markers of cell-mediated immunity. The potential of interventions to reduce these negative biological effects in maltreated children is also discussed.     

MyD88和TICAM1基因多态性及其交互作用与儿童社区获得性肺炎的关联研究

目的 探讨髓样分化因子88(myeloid differentiation factor 88,MyD88)和Toll样受体衔接分子1(Toll-like receptor adaptor molecule 1,TICAM1)基因的单核苷酸多态性及其交互作用与儿童社区获得性肺炎（community-acquired pneumonia,CAP）的相关性。方法 前瞻性采用改良多重高温连接酶检测反应技术对2015年8月—2017年9月在延安大学医学院第二附属医院儿科就诊的375例CAP患儿和306例健康体检儿童的MyD88和TICAM1基因的9个标签位点进行分型,并采用logistic回归分析评价各位点基因型及其交互作用与儿童CAP的关联。结果 TICAM1基因rs11466711T/C位点多态性与儿童CAP易感性密切相关（P<0.05）;rs35747610G/A位点AA基因型可显著降低CAP患儿并发脓毒症的风险（P<0.05）;rs6510826G/A位点AA基因型与CAP患儿急性期C反应蛋白水平的增高显著关联（P<0.05）。MyD88基因rs7744A/G位点GG...     

Predictors of re-referral to child protective services: a longitudinal follow-up of an urban cohort maltreated as infants

Decades of research has identified several psychosocial risk factors for child maltreatment, only some of which are modifiable. The relative importance of the most modifiable psychosocial variables, as compared to more static variables such as demographic characteristics, is not well understood, particularly among children maltreated at a very young age. This study examined predictors of re-referral among 149 urban children originally referred for maltreatment as infants. Of these children, 42.3% were re-referred over a period of 11 to 15 years. Cox regression analyses with time-varying covariates revealed that modifiable psychosocial risk factors failed to predict risk for re-referral in a multivariate model. Demographic characteristics and characteristics of the index incident of maltreatment were the strongest predictors of re-referral. Existing services may not be addressing the underlying reasons for maltreatment, particularly in families with young children. A clearer understanding of the underlying causes of maltreatment is needed.     

Child protection in Sweden: Are routine assessments reliable?

AIM: To study the validity of the decision not to investigate mandatory reports of suspected child maltreatment. METHODS: Written files of 220 reports indicating possible child maltreatment were analysed and re-evaluated. As a measure of the justification for the decisions, a 5-y follow-up study was done. RESULTS: We determined that 76% of the reports still indicated child maltreatment after the initial assessment was done. In the follow-up study, 45% of the children had been investigated. The social worker used the family as the only source of information in 74% of the cases, in 6% someone outside the family was contacted, and in 11% no further information in addition to the report was collected. In 9%, data on information sources were missing. CONCLUSION: The findings are rather discouraging, as they challenge the belief that a report is a means of ensuring that maltreatment does not continue. The study shows that, depending upon the way in which the initial assessments are made, maltreated children may run a risk of not being identified, even though the maltreatment has been reported. This suggests that there may be a need for national guidelines concerning the reporting of maltreatment.     

Relations of parental report and observation of parenting to maltreatment history

Parenting assessments (the Parent-Child Conflict Tactics Scale, CTSPC; and a mother-child observation) were examined for their ability to identify mothers with a history of physically abusing or neglecting their child. Participants were mothers of 139 children (age 3 to 6 years; 58 with a history of maltreatment). Mothers with a history of maltreatment reported higher scores on the Neglect, Nonviolent Discipline, and Psychological Aggression subscales of the CTSPC. These group differences, however, were limited to mothers who acknowledged a history of maltreatment, as mothers who concealed their maltreatment history rated themselves similar to controls. Observation of parental behaviors during a brief, nonstressful task did not discriminate mothers who maltreated from mothers who did not maltreat. The findings suggest that parental report using the CTSPC may be useful in assessing parenting behaviors among mothers with a history of maltreatment, although socially desirable responding is a significant problem.     

IL1R1基因多态性与儿童哮喘的相关性

目的 探讨我国中部地区儿童IL1R1 基因的两个SNP 位点(rs1558641 和rs949963)的多态性与哮喘易感性的相关性。方法 采用病例-对照的研究方法,选取来自于我国中部地区的208 例哮喘患儿(哮喘组)和223 例同时期体检正常的儿童(健康对照组)作为研究对象。利用限制性片段长度多态性分析(PCRRFLP)的方法检测IL1R1 基因两个SNP 位点(rs1558641 和rs949963)的多态性分布;酶联免疫吸附试验(ELISA)测定血清中IL1R1 的水平。结果 哮喘组患儿SNP 位点(rs1558641)的基因型及等位基因频率与健康对照组相比差异无统计学意义。而哮喘组患儿SNP 位点(rs949963)GG 基因型的比例显著高于健康对照组(P=0.031),且两组等位基因频率差异也有统计学意义(P=0.018)。哮喘组血清IL1R1 的水平明显高于健康对照组(P=0.011),且SNP 位点(rs949963)GG 基因型的患儿血清IL1R1 水平高于其他基因型(AA+AG)的患儿(P=0.028)。结论 IL1R1 基因SNP 位点(rs949963)的多态性与我国中部地区儿童哮喘的易感性相关,且该位点的多态性可能影响患儿血清中IL1R1 的表达水平。     

Longitudinal pathways linking child maltreatment,emotion regulation,peer relations,and psychopathology

Background: The aim of this study was to investigate longitudinal relations among child maltreatment, emotion regulation, peer acceptance and rejection, and psychopathology. Methods: Data were collected on 215 maltreated and 206 nonmaltreated children (ages 6–12 years) from low‐income families. Children were evaluated by camp counselors on emotion regulation and internalizing and externalizing symptomatology and were nominated by peers for peer acceptance and rejection. Results: Structural equation modeling analyses revealed that experiencing neglect, physical and/or sexual abuse, multiple maltreatment subtypes, and earlier onset of maltreatment were related to emotion dysregulation. Lower emotion regulation (Time 1) was associated with higher externalizing symptomatology (Time 1) that contributed to later peer rejection (Time 2), which in turn was related to higher externalizing symptomatology (Time 2). Conversely, higher emotion regulation was predictive of higher peer acceptance over time, which was related to lower internalizing symptomatology controlling for initial levels of symptomatology. Conclusions: The findings emphasize the important role of emotion regulation as a risk or a protective mechanism in the link between earlier child maltreatment and later psychopathology through its influences on peer relations.     

Association of MBL2 polymorphism with asthma after bronchiolitis in infancy

Background: Mannose‐binding lectin (MBL) is a component of innate immunity and has been linked with the pathogenesis of asthma. The aim of the present study was to evaluate the association of MBL genotypes with preschool asthma and allergy in children with bronchiolitis in early infancy. Methods: In all, 205 infants were hospitalized for bronchiolitis at <6 months of age. Asthma and allergy were studied from a total of 166 children at 6.4 years (mean). A total of 141 (85%) frozen whole blood samples were available for MBL genotyping and MBL2 gene mutations were determined on pyrosequencing for detection of three single‐nucleotide polymorphisms. Results: Ninety‐five children (67.4%) had the wild‐type MBL genotype A/A and 46 had A/O or O/O genotypes. Asthma was present in 16 children (11.3%) at 5–7 years of age. Nine children (19.6%) with non‐AA genotype had asthma (vs 7.4% of those with genotype AA, P= 0.03). The result remained significant after adjustment for age, gender and atopy. There were no significant associations between MBL genotypes and asthma at any age before the study. Atopic dermatitis, allergic rhinitis or paternal and/or maternal asthma had no significant associations with MBL genotypes. Conclusions: The variant non‐A/A MBL genotype is associated with asthma after bronchiolitis in infancy, but not earlier than at 5–7 years of age.     

Child maltreatment and foster care: unpacking the effects of prenatal and postnatal parental substance use

Parental substance use is a well-documented risk for children. However, little is known about specific effects of prenatal and postnatal substance use on child maltreatment and foster care placement transitions. In this study, the authors unpacked unique effects of (a) prenatal and postnatal parental alcohol and drug use and (b) maternal and paternal substance use as predictors of child maltreatment and foster care placement transitions in a sample of 117 maltreated foster care children. Models were tested with structural equation path modeling. Results indicated that prenatal maternal alcohol use predicted child maltreatment and that combined prenatal maternal alcohol and drug use predicted foster care placement transitions. Prenatal maternal alcohol and drug use also predicted postnatal paternal alcohol and drug use, which in turn predicted foster care placement transitions. Findings highlight the potential integrative role that maternal and paternal substance use has on the risk for child maltreatment and foster care placement transitions.