Youth Adversities Amplify the Association between Adult Stressors and Chronic Inflammation in a Domain Specific Manner: Nuancing the Early Life Sensitivity Model

Childhood exposure to danger increases Black youths' alcohol consumption, accelerated aging, and cardiac risk as young adults: A test of the incubation hypothesis

Using the dual-pathway framework (Beach et al., a), we tested a Neuro-immune Network (NIN) hypothesis: i.e., that chronically elevated inflammatory processes may have delayed (i.e., incubation) effects on young adult substance use, leading to negative health outcomes. In a sample of 449 participants in the Family and Community Health Study who were followed from age 10 to age 29, we examined a non-self-report index of young adult elevated alcohol consumption (EAC). By controlling self-reported substance use at the transition to adulthood, we were able to isolate a significant delayed (incubation) effect from childhood exposure to danger to EAC (β = -.157, p = .006), which contributed to significantly worse aging outomes. Indirect effects from danger to aging outcomes via EAC were: GrimAge (IE = .010, [.002, .024]), Cardiac Risk (IE = -.004, [-.011, -.001]), DunedinPACE (IE = .002, [.000, .008]). In exploratory analyses we examined potential sex differences in effects, showing slightly stronger incubation effects for men and slightly stronger effects of EAC on aging outcomes for women. Results support the NIN hypothesis that incubation of immune pathway effects contributes to elevated alcohol consumption in young adulthood, resulting in accelerated aging and elevated cardiac risk outcomes via health behavior.

Ripple Effects of Early Life Stress on Vascular Health

The term early life stress encompasses traumatic events occurring before the age of 18 years, such as physical abuse, verbal abuse, household dysfunctions, sexual abuse, childhood neglect, child maltreatment, and adverse childhood experiences. Adverse psychological experiences in early life are linked to enduring effects on mental and physical health in adulthood. In this review, we first describe the effects and potential mechanisms of early life stress on the components of the vasculature. Next, we dive into the impact of early life stress on the vasculature across the lifespan through alterations of the epigenetic landscape. Finally, we consolidate the critical gaps in knowledge for focusing future research including the potential for resilience in combatting the impact of early life stress on vascular health.

Stress Accumulation, Depressive Symptoms, and Sleep Problems among Black Americans in the Rural South

Centuries of systemic racism in the United States have led to Black Americans facing a disproportionate amount of life stressors. These stressors can have negative effects on mental and physical health, contributing to inequities throughout the lifespan. The current study used longitudinal data from 692 Black adults in the rural South to examine the ways in which neighborhood stress, financial strain, and interpersonal experiences of racial discrimination operate independently and in tandem to impact depressive symptoms and sleep problems over time. Findings provided strong support for univariate and additive stress effects and modest support for multiplicative stress effects. Results underscore how multiple stressors stemming from systemic racism can undermine health among Black Americans and highlight the need for further research on factors that promote well-being in the face of these stressors.

Discrimination, cognitive styles, and their associations with adolescents' mental and physical health

This study is based on the hopelessness theory of depression and previous research on perceived everyday discrimination (PED) and both depressive symptoms and Interleukin-6 (an inflammatory cytokine; IL-6) in adolescents. The purpose of this study is to examine the negative attribution, self, and consequence cognitive styles (CSs) proposed in the hopelessness theory as a possible mechanism underlying the association between PED and inflammation in adolescents and expand our understanding of the comorbidities between depressive symptoms and systemic inflammation (IL-6). This cross-sectional study featured a sample of 102 adolescents aged 13-16 (M = 14.10, SD = 0.52) who identified as White (47.5%), Black (41.4%), Mixed Race (7.1%), Latino (2%), and other (2%). Data analysis was conducted using PROCESS to compute regressions and effects between PED, negative CSs, depressive symptoms, and Interleukin-6. Results showed that negative attribution CS is the only negative CS associated with PED, depressive symptoms, and IL-6. Negative attribution CS is also the only negative CS of the three negative CSs that mediates both the association between PED and depressive symptoms and PED and IL-6 in our adolescent sample. Overall, these results indicate that individual negative CSs proposed in the hopelessness theory impact adolescents' physical and mental outcomes differently, which can inform targeted treatments. Nurses should provide cognitive-based interventions and promote societal-level change to reduce the experience and impact of PED on the mental and physical health of their adolescent patients.

Stress begets stress: The moderating role of childhood adversity in the relationship between job stress and sleep quality among nurses

BACKGROUND

Nurses exhibit considerable variations in sleep quality and experience high job stress levels. Distal factors, such as childhood adversity, and proximal factors, both influence sleep quality. We investigated the moderating role of childhood adversity with job stress and sleep quality, and whether this aligns with the stress-sensitization or stress-amplification models.

METHODS

The impact of job stressors' total score and its dimensions on sleep quality was analyzed using traditional linear regression models and the extreme gradient boosting machine learning algorithm. The hierarchical regression examined the moderating role of childhood adversity in the relationship between job stress and sleep quality. An interactive tool was used to visualize the results.

RESULTS

Among the dimensions of job stress, "time allocation and workload" strongly correlated with sleep quality, followed by "nursing profession and work problems," "patient care issues," "management and interpersonal problems," and "working environment and equipment problems." The moderating role of childhood adversity in the relationship between different dimensions of job stressors (except working environment and equipment problems) and sleep quality aligns with the stress-sensitization model.

LIMITATIONS

This study was susceptible to recall bias and objective sleep data were unavailable. Cross-sectional study design was used, thus limiting causal inferences. Finally, the moderating effect of childhood adversity on subsequent stress among nurses remains unclear.

CONCLUSION

Childhood adversity and job stress were integrated into a stress-sensitization model, providing a nuanced and specific examination of sleep quality. Healthcare policymakers should focus on job stress and childhood adversity, improve nurses' sleep quality, and ultimately benefit patient care and outcomes.

What is Common Becomes Normal; Black-White Variation in the Effects of Adversities on Subsequent Initiation of Tobacco and Marijuana During Transitioning into Adolescence

Background

While adversities across domains of finance, race, family, and life may operate as risk factors for initiation of substance use in adolescents, the influence of these factors may vary across racial groups of youth. Unfortunately, the existing knowledge is minimal about racial differences in the types of adversities that may increase the risk of subsequent substance use initiation during the transition into adolescence.

Aim

To compare racial groups for the effects of adversities across domains of finance, race, family, and life on subsequent substance use initiation among pre-adolescents transitioning into adolescence.

Methods

In this longitudinal study, we analyzed data from 6003 non-Latino White and 1562 non-Latino African American 9-10-year-old children transitioning into adolescence. Data came from the Adolescent Brain Cognitive Development (ABCD) study. Participants were followed for up to thirty-six months as they transitioned to adolescence. The independent variables were adversities related to the domains of finance, race, family, and life. The primary outcomes were time to first tobacco or marijuana use. Age, puberty, and gender were confounders. Cox regression models were used for data analysis.

Results

For White youth, tobacco use was under influence of having two parents in the household (HR = .611; 95% CI = .419-.891), parental education (HR = .900; 95% CI = .833-.972), household income (HR = .899; 95% CI = .817-.990), racial stress (HR = 1.569; 95% CI = 1.206-2.039), and life stress (HR =1.098 ; 95% CI = 1.024-1.178) and marijuana use was under influence of neighborhood income (HR = .576; 95% CI = .332-.999) and financial stress (HR =4.273; 95% CI = 1.280-17.422). No adverse condition predicted tobacco or marijuana use of African American youth.

Conclusion

The effects of adversities on substance use depend on race. While various types of adversities tend to increase subsequent initiation of tobacco and marijuana, such factors may be less influential for African American adolescents, who experience more of such adversities. What is common may become normal.

The Impact of Early and Recent Life Stress on Trajectories of Inflammatory Biomarkers in a Diverse Sample of Adolescents

Elevated inflammatory activity is one possible pathway through which exposure to childhood adversity engenders risk for physical and psychiatric illnesses. Limited research has investigated the compounding effects of childhood and adolescent stress exposure on changes in circulating levels of inflammatory biomarkers. This study assessed whether childhood adversity interacted with chronic or acute stress during adolescence to affect the temporal trajectories of five inflammatory biomarkers across at least three blood draws in a diverse sample of adolescents (N = 134; observations = 462). Using multilevel modeling, the interaction of childhood adversity, time, and within-person variance of acute stressors significantly predicted trajectories of higher interleukin-10 levels, controlling for demographics, medication use, and body mass index. Adolescents with high levels of childhood adversity who were exposed to a higher frequency of acute stressors compared to their own average rate of stress exposure consistently had higher levels of IL-10 as they got older, but those with average and below frequency of acute stressors had decreasing trajectories of log IL-10 as they matured. The results demonstrate how events early in life shape biological responses to the adolescent environment. This study also highlights the importance of developmental timing on the body's enhanced reactivity to acute and sustained stressors following childhood adversity.

Chronic Stress and Latent Virus Reactivation: Effects on Immune Aging, Chronic Disease Morbidity, and Mortality

OBJECTIVES

Social stress has been shown to affect immune functioning. Past research has found that chronic social stress and latent viral infections accelerate immune aging, leading to chronic disease morbidity and mortality. Chronic stress may also reactivate latent viral infections, like cytomegalovirus (CMV), accelerating the aging of the immune system.

METHOD

Utilizing panel survey data from 8,995 U.S. adults aged 56 or older from the Health and Retirement Study, this study investigates whether chronic stress interacts with CMV positivity to drive aging of the immune system, multimorbidity, and mortality.

RESULTS

Results of moderated mediation analysis indicate that the effect of CMV positivity on morbidity and mortality as mediated by immune aging indicators is amplified by chronic stress.

DISCUSSION

These findings suggest that immune aging is a biological pathway underlying the stress process and help explain past findings in the literature on stress and health.

Racial discrimination, childhood adversity, and depression among Black men: Tests of stress sensitization hypotheses

Racial discrimination has been linked to depression among Black American men. Racial discrimination, however, does not uniformly confer risk for depression. According to the stress sensitization theory, racial discrimination can be particularly harmful for those with histories of adversity in childhood. Existing research on stress sensitization is limited in that it has conceptualized childhood adversity as a unidimensional construct composed of a broad range of stressful experiences. To fill this gap in the literature, the current study investigated stress sensitization hypotheses, focusing on how different dimensions of adverse childhood experiences moderate the association between racial discrimination and depression. Study sample was 504 young Black men (mean age at baseline = 20.3, SD = 1.08) living in rural counties in South Georgia where childhood adversity is disproportionately high. The association between racial discrimination and increased risk for depressive symptoms varied by the degree of childhood experience of deprivation, but not threat. Our findings suggest that no or low levels of childhood deprivation, which is commonly regarded as a protective factor, can elevate the negative effects of discrimination on depression. This finding emphasizes that clinicians should consider developmental risk and protective factors that are unique to Black American men.

Conceptualizing the Influence of Social and Structural Determinants of Neurobiology and Mental Health: Why and How Biological Psychiatry Can Do Better at Addressing the Consequences of Inequity

Psychiatry and allied disciplines have recognized the potency of structural and social determinants of mental health, yet there has been scant attention given to the roles of neurobiology in the links between structural and social determinants and mental health. In this article, we make the case for why greater attention must be given to structural and social determinants of biological psychiatry by researchers, practitioners, and policy-makers. After defining these terms and theoretical frameworks for considering their relevance in biological psychiatry, we review empirical research with marginalized and minoritized racial, ethnic, gender, sexual, and economic communities that reveals the ways in which structural and social determinants affect neurobiological functioning with implications for mental health. We give particular emphasis to developmental science and developmentally informed research, because structural and social determinants influence neurobiological adaptation and maturation across the lifespan. We conclude with recommendations for advancing research, practice, and policy that connect biological psychiatry with structural and social determinants of health. Foremost among these is diversifying the ranks of biological psychiatry, from classrooms through laboratories, hospitals, and community health centers. Transforming and advancing the understanding of the structural and social determinants of neurobiology and mental health is most likely to come through transforming the discipline itself.

Examining the relationships between adverse childhood experiences (ACEs), cortisol, and inflammation among young adults

Adverse childhood experiences (ACEs) are associated with dysregulation of inflammation and cortisol. The objectives of this study were to use principal component analysis to explore the inflammatory biomarker data to create inflammation composite variables; to examine the relationship between these composite measures of inflammation with ACEs and cortisol; and to assess whether these relationships were moderated by sex. The analysis included 232 young adults from the Niagara Longitudinal Heart Study (NLHS). After adjusting for covariates, higher exposure to ACEs significantly predicted higher low-grade inflammation. These results further support the use of multiple biomarkers to understand the complex relationships among ACEs, cortisol, and inflammation, which should be further examined in longitudinal studies to study biomarker trajectories.

Non-invasive diagnosis and monitoring tool of children’s mental health: A point-of-care immunosensor for IL-6 quantification in saliva samples

Mental disorders are commonly featured as chronic conditions with often onset during childhood. In this context, inflammation has been associated with a higher risk of developing physical and mental health problems. Interleukin (IL)-6 is a key mediator of inflammatory responses and plays a pivotal role in immune and nervous system interaction. High levels of IL-6 during childhood are associated with mental problems, indicating that the IL-6 molecular pathway may represent a new target for monitoring and treating these conditions. Here, we report the detection of IL-6 in saliva samples from children (N = 118, mean age 4.4 years old) with behavioral problems using an immunosensor based on electrochemical impedance spectroscopy. This work demonstrates that the proposed immunosensor requires smaller sample volumes and is significantly faster and more sensitive than conventional ELISA while maintaining comparable levels of specificity and reproducibility. The point-of care immunosensor for detection of IL-6 in saliva samples presented herewith is, therefore, an attractive solution to the clinical practice as a rapid non-invasive, high-sensitive monitoring tool of mental health problems, especially in vulnerable patient populations such as children.

Adolescents' and young people's needs and preferences for support when living with a parent with life-threatening cancer: a grounded theory study

BACKGROUND

Living with a parent facing life-threatening illness and losing a mom or dad at a young age can cause both short- and long-term health problems. Without satisfactory support, adolescents' and young people are at risk of developing low self-esteem, behavioural difficulties (e.g., anger and aggression), long-term illness or premature death caused by severe mental illness, substance abuse, self-harm and suicide attempts. The aim of this study was to explore adolescents' and young people's needs and preferences for support as they live with a parent with life-threatening cancer.

METHODS

Qualitative interviews were conducted with 10 respondents (17-24 years) in Norway and Sweden. Data were analysed through grounded theory according to Charmaz.

RESULTS

Adolescents' and young peoples' needs and preferences for support were described through the main category 'To feel safe and secure and to be prepared' and further broken down into five subcategories 'Relationships in the immediate family-balancing support and protection'; 'The social network-support and normalcy in a carefully selected group'; 'Maintaining everyday life-challenges in school and working life'; 'The right support at the right time-competence, trust and continuity in meeting health care professionals'; and 'Support outside the home-an opportunity for full transparency'.

CONCLUSION

Adolescents' and young peoples' preferences for support when living with a parent facing life-threatening illness are individual and unique, but they share a common need to feel safe and secure and to be prepared. Adolescents and young people express that they primarily want support from parents and friends, but they also want support from health care professionals, especially in situations when the ill parent becomes worse. Therefore, it is of the utmost importance for health care professionals to identify the most vulnerable adolescents and young people by mapping their social networks and paying extra attention to their needs for support when there is deterioration in the parent's illness state. This study also highlights the importance for health care professionals to establish a good relationship with adolescents and young people to meet their needs and preferences for support. In addition, information and support are needed in a timely manner and adapted to the life-threatening ill parent's illness state and individual's needs and preferences to optimise preparedness.

Rethinking minority stress: A social safety perspective on the health effects of stigma in sexually-diverse and gender-diverse populations

For over two decades, the minority stress model has guided research on the health of sexually-diverse individuals (those who are not exclusively heterosexual) and gender-diverse individuals (those whose gender identity/expression differs from their birth-assigned sex/gender). According to this model, the cumulative stress caused by stigma and social marginalization fosters stress-related health problems. Yet studies linking minority stress to physical health outcomes have yielded mixed results, suggesting that something is missing from our understanding of stigma and health. Social safety may be the missing piece. Social safety refers to reliable social connection, inclusion, and protection, which are core human needs that are imperiled by stigma. The absence of social safety is just as health-consequential for stigmatized individuals as the presence of minority stress, because the chronic threat-vigilance fostered by insufficient safety has negative long-term effects on cognitive, emotional, and immunological functioning, even when exposure to minority stress is low. We argue that insufficient social safety is a primary cause of stigma-related health disparities and a key target for intervention.

Childhood adversity is associated with heightened inflammation after sleep loss

OBJECTIVES

To investigate whether childhood adversity exacerbates the relationship between sleep restriction and inflammation.

METHODS

Participants (N = 46) were randomly assigned to an experimental sleep restriction group (n = 25) or a night of typical sleep (n = 21). Participants provided a dried blood spot sample the morning before and after the experimental night.

RESULTS

A significant interaction emerged between childhood adversity and group assignment on C-reactive protein (CRP) after the experimental night (Beta = -0.02, SE = 0.01, P = .03, 95% CI: -0.05, -0.002). Sleep restriction resulted in an increase in CRP at high levels of childhood adversity (+1 SD; Effect = -0.57, SE = 0.15, P< .001; 95% CI: -0.87, -0.26) but not low levels of childhood adversity (Effect = -0.08, SE = 0.10, P = .40; 95% CI: -0.29, 0.12).

CONCLUSION

Childhood adversity may amplify the effect of sleep loss on markers of inflammation.

Associations of childhood and adult adversity with daily experiences in adulthood

Data from 213 adults were analysed to test the stress accumulation and stress sensitization models as they relate to daily mood, health behaviours and social interactions. Adults reported on childhood adversity, past year adversity, and daily experiences on 14 evenings. Results largely supported the stress accumulation and not stress sensitization model such that childhood and past year adversity had independent but not synergistic effects on daily experiences. Both adversity measures were independently associated with greater daily negative affect and negative affect variability. Childhood adversity independently associated with greater mean variability in daily positive affect. Past year adversity was associated with more daily social activities, greater odds of reporting interpersonal tension at least once, and daily tension. Although childhood adversity was associated with greater odds of sharing about one's day at least once, past year adversity was associated with more daily sharing and childhood adversity with less. Both measures were unrelated to daily health behaviours except childhood adversity was associated with lower odds of being a current drinker. The only support for the stress sensitization model was number of daily cigarettes among smokers. Our findings suggest childhood and recent adversity independently relate to adults' daily experiences and should be considered jointly.

Life course trajectories of chronic financial strain and acute stress reactivity: Steeling in response to recovery from strain

The steeling hypothesis suggests experiencing moderate strain may improve an individual's ability to cope with future strain, whereas crisis theory suggests that experiencing temporary strain will reduce the effect of future strain. The current study improves on past research by utilizing data from two independent prospective panel studies (one of 553 white rural Midwesterner women and 451 men and one of 624 African American women) spanning 26 and 22 years, respectively. We utilize growth mixture modeling to identify latent groups based on trajectories of financial strain and test interactions between class membership and later acute stressful events on chronic illness and physical health using three subscales from the RAND SF-12. We find being a group that experienced a period of temporary strain weakened the effect of later acute stressors on physical health for both samples and chronic illness for the African American sample. Results support crisis theory and highlight the importance of considering chronic strain as a life course process.

Children and adolescents’ preferences for support when living with a dying parent – An integrative review

Aim

To identify and synthesize the evidence base regarding children and adolescents’ preferences for support when living with a dying parent.

Design

Integrative literature review study.

Methods

Searches were conducted in PubMed, CINAHL, PsycINFO, the Cochrane Library, Sociological Abstracts and Scopus, between 1 October 2019 and May 2021. Data were analysed and synthesized using integrative thematic analysis according to the analysis stages specified by Whittermore and Knafl.

Results

Twenty‐two articles were identified. Children and adolescents’ preferences for support were described through one overarching theme, Striving to achieve control and balance, together with six subthemes; “Involvement in the sick parent's care and treatment”; “Wanting to be with the sick parent but needing respite”; “Information must be continuous and individually adapted”; “emotional and communicative support from parents and family members”; “professional, compassionate and informative support”; and “support in friendships and opportunities to maintain normality.”

Applications of psychoneuroimmunology models of toxic stress in prevention and intervention efforts across early development

Although evidence supporting psychoneuroimmunology (PNI) models of toxic stress have emerged over the past decade, the PNI field has struggled to integrate these important findings into real-world practical applications. There is great potential for these models to reduce the societal burden of childhood adversity by facilitating early detection and prevention with those children and adolescents at greatest risk for stress-related physical and psychological disorders. But further research is needed to validate and scale developmentally appropriate interventions with specific immune and endocrine mechanism-based targets that are developmentally sensitive. The allostatic load and additive PNI models of toxic stress exposure in youth are summarized. These models highlight the importance of integrating a standardized screening of environmental and interpersonal risk factors with stable and scalable cognitive and biological markers of risk. PNI models of toxic stress illustrate the need for intervention delivery as early as possible to prevent negative health outcomes in youth and comprehensive screening efforts would facilitate the deployment of community and family level interventions. This review discusses practical applications of toxic stress models that are currently under investigation, clarifies key obstacles, such as research gaps and scalability, and provides potential solutions, including cross-disciplinary partnerships.

Systemic inflammation as a driver of health disparities among sexually-diverse and gender-diverse individuals

Sexually-diverse individuals (those who seek sexual or romantic relationships with the same and/or multiple genders) and gender-diverse individuals (those whose gender identity and/or expression differs from their birth-assigned sex/gender) have disproportionately high physical health problems, but the underlying biological causes for these health disparities remain unclear. Building on the minority stress model linking social stigmatization to health outcomes, we argue that systemic inflammation (the body's primary response to both physical and psychological threats, indicated by inflammatory markers such as C-reactive protein and proinflammatory cytokines) is a primary biobehavioral pathway linking sexual and gender stigma to physical health outcomes. Expectations and experiences of social threat (i.e., rejection, shame, and isolation) are widespread and chronic among sexually-diverse and gender-diverse individuals, and social threats are particularly potent drivers of inflammation. We review research suggesting that framing "minority stress" in terms of social safety versus threat, and attending specifically to the inflammatory consequences of these experiences, can advance our understanding of the biobehavioral consequences of sexual and gender stigma and can promote the development of health promoting interventions for this population.

The impact of adverse childhood experiences on healthcare utilization in children

BACKGROUND

Adverse childhood experiences (ACEs) are related to long-term negative outcomes. The impact of these experiences on healthcare utilization in children has been understudied.

OBJECTIVE

To examine the impact of ACEs on children's healthcare utilization, medical diagnoses, and pharmacological treatment.

PARTICIPANTS AND SETTING

Children aged 6 months to 17 years who were screened for ACEs in the Behavioral Health Department or in primary care locations as part of an initial consultation visit and who had at least one subsequent healthcare visit during the study period were included in the study.

METHODS

Adverse childhood experiences were measured using the ACE screening questionnaire designed by Felitti et al. (1998). Data from the year following administration of the ACE screening tool were retrospectively extracted from the electronic health record.

RESULTS

Overall, 1,183 children met study inclusion criteria. Children with any reported ACEs were more likely to no show appointments (1-3 ACEs incidence rate ratio (IRR) [95 % confidence interval (CI)]: 1.40 [1.11-1.77]; 4+ ACEs IRR [95 % CI]: 1.41 [1.08-1.84]) and to use emergency services (1-3 ACEs IRR [95 % CI]: 1.24 [1.00-1.53]; 4+ ACEs: IRR [95 % CI]: 1.42 [1.11-1.81) than children with no ACEs. Those with 4+ ACEs used the telephone nurse advisor less frequently (1-3 ACEs IRR [95 % CI]: 0.67 [0.53-0.84]; 4+ ACEs IRR [95 % CI]: 0.69 [0.53-0.90]). Although ACE scores were associated with healthcare utilization, insurance status was more robustly associated with healthcare utilization than ACE score.

CONCLUSIONS

Healthcare systems may employ results from this study to adopt trauma-informed care initiatives. Ensuring that all patients have insurance may be a first step toward improving healthcare utilization.

The prospective association between stressful life events and inflammation among adolescents with a history of early institutional rearing

Early adversity has been shown to sensitize individuals to the effects of later stress and enhance risk of psychopathology. Using a longitudinal randomized trial of foster care as an alternative to institutional care, we extend the stress sensitization hypothesis to examine whether early institutional rearing sensitizes individuals to stressful events in adolescence engendering chronic low-grade inflammation. At baseline, institutionalized children in Romania (ages 6-31 months) were randomly assigned to foster care or to remain in usual care within institutions. A group of never-institutionalized children was recruited as an in-country comparison sample. At ages 12 and 16, participants reported stressful events. At age 16, Interleukin-6 (IL-6) and C-reactive protein (CRP) were derived from blood spots. Among children assigned to care as usual, more stressful events at age 12, but not age 16, were associated with higher IL-6. In the same group, stressful events at age 16 were associated with higher CRP, though these effects attenuated after adjusting for covariates. These associations were not observed in the foster care or never-institutionalized groups. The findings suggest that heightened inflammation following stress exposure is one pathway through which early neglect could compromise physical health. In contrast, early family care might buffer against these risks.

Stress genomics revisited: gene co-expression analysis identifies molecular signatures associated with childhood adversity

Childhood adversity is related to an increased risk for psychopathology in adulthood. Altered regulation of stress response systems, as well as the changes in stress-immune interplay have been suggested as potential mechanisms underlying these long-term effects. We have previously shown altered transcriptional responses to acute psychosocial stress in adults reporting the experience of childhood adversity. Here, we extend these analyses using a network approach. We performed a co-expression network analysis of genome-wide mRNA data derived from isolated monocytes, sampled 3 h after stress exposure from healthy adults, who experienced childhood adversity and a matched control group without adverse childhood experiences. Thirteen co-expression modules were identified, of which four modules were enriched for genes related to immune system function. Gene set enrichment analysis showed differential module activity between the early adversity and control group. In line with previous findings reporting a pro-inflammatory bias following childhood adversity, one module included genes associated with pro-inflammatory function (hub genes: IL6, TM4SF1, ADAMTS4, CYR61, CCDC3), more strongly expressed in the early adversity group. Another module downregulated in the early adversity group was related to platelet activation and wound healing (hub genes: GP9, CMTM5, TUBB1, GNG11, PF4), and resembled a co-expression module previously found over-expressed in post-traumatic stress disorder resilient soldiers. These discovery analysis results provide a system wide and more holistic understanding of gene expression programs associated with childhood adversity. Furthermore, identified hub genes can be used in directed hypothesis testing in future studies.

The moderating effects of traumatic stress on vulnerability to emotional distress during pregnancy

Emotional distress during pregnancy is likely influenced by both maternal history of adversity and concurrent prenatal stressors, but prospective longitudinal studies are lacking. Guided by a life span model of pregnancy health and stress sensitization theories, this study investigated the influence of intimate partner violence (IPV) during pregnancy on the association between childhood adversity and prenatal emotional distress. Participants included an urban, community-based sample of 200 pregnant women (aged 18-24) assessed annually from ages 8 to 17 for a range of adversity domains, including traumatic violence, harsh parenting, caregiver loss, and compromised parenting. Models tested both linear and nonlinear effects of adversity as well as their interactions with IPV on prenatal anxiety and depression symptoms, controlling for potential confounds such as poverty and childhood anxiety and depression. Results showed that the associations between childhood adversity and pregnancy emotional distress were moderated by prenatal IPV, supporting a life span conceptualization of pregnancy health. Patterns of interactions were nonlinear, consistent with theories conceptualizing stress sensitization through an "adaptive calibration" lens. Furthermore, results diverged based on adversity subdomain and type of prenatal IPV (physical vs. emotional abuse). Findings are discussed in the context of existing stress sensitization theories and highlight important avenues for future research and practice.

Perceived Racial Discrimination and Marijuana Use a Decade Later; Gender Differences Among Black Youth

Background: Researchers have reported gender differences in the association between perceived racial discrimination (PRD) and substance use including marijuana use (MU). A limited number of longitudinal studies, however, have documented the long-term effect of PRD during adolescence on subsequent MU in young adulthood. Objective: In the current longitudinal study, we tested gender differences in the association between baseline PRD during adolescence and subsequent MU during young adulthood within Black population. Methods: A cohort of 595 Black (278 male and 317 female) ninth grade students were followed for 13 years from 1999 (mean age 20) to 2012 (mean age 33). Participants were selected from an economically disadvantaged urban area in the Midwest, United States. The independent variable was PRD measured in 1999. The outcome was average MU between 2000 and 2012 (based on eight measurements). Covariates included age, socio-demographics (family structure, and parental employment), and substance use by friends and parents. Gender was the focal moderator. Linear regression was used for statistical analysis. Results: In the pooled sample, PRD in 1999 was not associated with average MU between 2000 and 2012. We did, however, find an interaction effect between baseline PRD and gender on average MU, suggesting stronger association for males than females. In gender-specific models, baseline PRD predicted average MU between 2000 and 2012 for males, but not for females. Conclusion: Exposure to PRD during late adolescence may have a larger role on MU of male than female Black young adults. Although we found that males are more vulnerable to the effects of PRD on MU, PRD should be prevented regardless of race, gender, and other social identities. While PRD is pervasive among Black Americans, exposure to PRD increase the risk of MU for Black males. Hence, substance use prevention efforts for Black males, in particular, should emphasize coping with PRD.