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1.
Psychosom Med ; 86(2): 72-82, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38153259

RESUMEN

OBJECTIVE: This study aimed to evaluate the relationship between early life stress (ELS) and metabolic risk in healthy young adults and assess the role of health behaviors. METHODS: Young adults aged 18 to 40 years ( N = 190) with no medical conditions or medication usage were recruited from the community. Participants with ELS ( N = 113) had a history of childhood maltreatment, and most also experienced parental loss ( n = 88). Controls ( N = 77) had no history of maltreatment or parental loss. Standardized interviews and self-reports assessed demographics, adversity, medical/psychiatric history, and health behaviors. Blood pressure and anthropometrics were measured, and fasting plasma assayed for lipid profiles, glucose, insulin level, and hemoglobin A 1c . We calculated both a clinical cut-point and continuous composite metabolic risk score based on clinical risk factors and the mean of z scores of each measure, respectively. RESULTS: ELS was significantly associated with increased clinical cut-point ( ß = 0.68, 95% confidence interval [CI] = 0.20-1.17, p = .006) and continuous ( ß = 0.23, 95% CI = 0.08-0.038, p = .003) composite metabolic risk scores. On sensitivity analysis, the association of ELS with the continuous composite metabolic risk score was reduced to a trend after adjusting for a range of psychosocial and health predictors ( ß = 0.18, 95% CI = 0.00-0.36, p = .053), with both diet and college graduate status significant in the model. CONCLUSIONS: Healthy young adults with a history of ELS have increased metabolic risk scores as compared with controls. This relationship may be partially due to health behaviors and socioeconomic factors. These findings underline that ELS is an early contributor to metabolic risk.


Asunto(s)
Experiencias Adversas de la Infancia , Enfermedades Cardiovasculares , Muerte Parental , Humanos , Adulto Joven , Factores de Riesgo , Estrés Psicológico
2.
Psychosom Med ; 86(1): 37-43, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-37769227

RESUMEN

OBJECTIVES: Mitochondrial dysfunction is implicated in the pathophysiology of psychiatric disorders. Levels of circulating cell-free mitochondrial DNA (cf-mtDNA) are observed to be altered in depression. However, the few studies that have measured cf-mtDNA in depression have reported conflicting findings. This study examined cf-mtDNA and depressive symptoms in low-active adults who smoke. METHODS: Participants were adults 18 to 65 years old ( N = 109; 76% female) with low baseline physical activity and depressive symptoms recruited for a smoking cessation study. Self-report measures assessed depression severity, positive and negative affect, and behavioral activation. Blood was collected and analyzed for cf-mtDNA. Relationships between depressive symptoms and cf-mtDNA were examined with correlations and linear regression. RESULTS: Levels of cf-mtDNA were associated with categorically defined depression (Center for Epidemiologic Studies Depression Scale score >15), lower positive affect, and decreased behavioral activation ( p < .05). Relationships remained significant after adjustment for age, sex, and nicotine dependence. In a linear regression model including all depressive symptom measures as predictors, Center for Epidemiologic Studies Depression Scale group and lower positive affect remained significant. CONCLUSIONS: This work suggests that mitochondrial changes are associated with depressive symptoms in low-active adults who smoke. Higher levels of cf-mtDNA in association with depression and with lower positive affect and decreased behavioral activation are consistent with a possible role for mitochondrial function in depressive symptoms.


Asunto(s)
Ácidos Nucleicos Libres de Células , Tabaquismo , Adulto , Humanos , Femenino , Adolescente , Adulto Joven , Persona de Mediana Edad , Anciano , Masculino , Depresión/complicaciones , ADN Mitocondrial/genética , Mitocondrias , Fumar
3.
Brain Cogn ; 177: 106164, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38670050

RESUMEN

Recent work has found that the presence of transient, oscillatory burst-like events, particularly within the beta band (15-29 Hz), is more closely tied to disease state and behavior across species than traditional electroencephalography (EEG) power metrics. This study sought to examine whether features of beta events over frontoparietal electrodes were associated with early life stress (ELS) and the related clinical presentation. Eighteen adults with documented ELS (n = 18; ELS + ) and eighteen adults without documented ELS (n = 18; ELS-) completed eyes-closed resting state EEG as part of their participation in a larger childhood stress study. The rate, power, duration, and frequency span of transient oscillatory events were calculated within the beta band at five frontoparietal electrodes. ELS variables were positively associated with beta event rate at Fp2 and beta event duration at Pz, in that greater ELS was associated with higher resting rates and longer durations. These beta event characteristics were used to successfully distinguish between ELS + and ELS- groups. In an independent clinical dataset (n = 25), beta event power at Pz was positively correlated with ELS. Beta events deserve ongoing investigation as a potential disease marker of ELS and subsequent psychiatric treatment outcomes.


Asunto(s)
Ritmo beta , Electroencefalografía , Estrés Psicológico , Humanos , Femenino , Adulto , Masculino , Ritmo beta/fisiología , Estrés Psicológico/fisiopatología , Electroencefalografía/métodos , Lóbulo Frontal/fisiopatología , Lóbulo Parietal/fisiopatología , Adulto Joven , Persona de Mediana Edad
4.
J Behav Med ; 2024 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-38762606

RESUMEN

Childhood adversity is linked to psychological, behavioral, and physical health problems, including obesity and cardiometabolic disease. Epigenetic alterations are one pathway through which the effects of early life stress and adversity might persist into adulthood. Epigenetic mechanisms have also been proposed to explain why cardiometabolic health can vary greatly between individuals with similar Body Mass Index (BMIs). We evaluated two independent cross-sectional cohorts of adults without known medical illness, one of which explicitly recruited individuals with early life stress (ELS) and control participants (n = 195), and the other a general community sample (n = 477). In these cohorts, we examine associations between childhood adversity, epigenetic aging, and metabolic health. Childhood adversity was associated with increased GrimAge Acceleration (GAA) in both cohorts, both utilizing a dichotomous yes/no classification (both p < 0.01) as well as a continuous measure using the Childhood Trauma Questionnaire (CTQ) (both p < 0.05). Further investigation demonstrated that CTQ subscales for physical and sexual abuse (both p < 0.05) were associated with increased GAA in both cohorts, whereas physical and emotional neglect were not. In both cohorts, higher CTQ was also associated with higher BMI and increased insulin resistance (both p < 0.05). Finally, we demonstrate a moderating effect of BMI on the relationship between GAA and insulin resistance where GAA correlated with insulin resistance specifically at higher BMIs. These results, which were largely replicated between two independent cohorts, suggest that interactions between epigenetics, obesity, and metabolic health may be important mechanisms through which childhood adversity contributes to long-term physical and metabolic health effects.

5.
Dev Psychobiol ; 66(2)2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38601953

RESUMEN

Parent-child relationship dynamics have been shown to predict socioemotional and behavioral outcomes for children, but little is known about how they may affect biological development. The aim of this study was to test if observational assessments of parent-child relationship dynamics (cohesion, enmeshment, and disengagement) were associated with three biological indices of early life adversity and downstream health risk: (1) methylation of the glucocorticoid receptor gene (NR3C1), (2) telomere attrition, and (3) mitochondrial biogenesis, indexed by mitochondrial DNA copy number (mtDNAcn), all of which were measured in children's saliva. We tested hypotheses using a sample of 254 preschool-aged children (M age = 51.04 months) with and without child welfare-substantiated maltreatment (52% with documented case of moderate-severe maltreatment) who were racially and ethnically diverse (17% Black, 40% White, 23% biracial, and 20% other races; 45% Hispanic) and from primarily low-income backgrounds (91% qualified for public assistance). Results of path analyses revealed that: (1) higher parent-child cohesion was associated with lower levels of methylation of NR3C1 exon 1D and longer telomeres, and (2) higher parent-child disengagement was associated with higher levels of methylation of NR3C1 exon 1D and shorter telomeres. Results suggest that parent-child relationship dynamics may have distinct biological effects on children.


Asunto(s)
Maltrato a los Niños , Acortamiento del Telómero , Preescolar , Humanos , Maltrato a los Niños/psicología , Metilación de ADN , Relaciones Padres-Hijo , Pobreza
6.
Appetite ; 162: 105180, 2021 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-33684530

RESUMEN

Early life adversity has been linked to poor health, including obesity. Understanding the role of unhealthy food intake, may elucidate the importance of self-soothing behaviors in explaining the association between early life adversity and poor health in adulthood. The purpose of this study was to assess the association between early life adversity and dietary quality in a sample of adults from the Lifestyle Influences of Family Environment study. Early life adversity, demographic, and dietary data were obtained for 145 participants using formal interviews and two days of interviewer-administered 24-h recalls. Dietary quality was measured using the 2015 Healthy Eating Index (HEI) scoring algorithm to compute total and component scores. The association between early life adversity and dietary quality was assessed through linear regression and in models adjusted for age and sex. The mean ± SD HEI score for all participants was 54.6 ± 12.8. Individuals with early life adversity had a 4.51 lower overall HEI score when compared to those without early life adversity, 95% CI (0.35, 8.68). After adjusting for age and sex, early life adversity was associated with a 4.6 lower HEI score, 95% CI (0.45, 8.73). HEI component scores indicated that individuals with early life adversity were significantly more likely to have lower whole grain (0.7 versus 2.4) and total dairy (4.3 versus 6.1) scores compared to those without early life adversity. ELA was associated with lower measures of dietary quality. Results warrant future research on dietary and behavioral factors that underly the association between early life adversity and poor health outcomes.


Asunto(s)
Dieta Saludable , Dieta , Adulto , Estudios Transversales , Encuestas sobre Dietas , Humanos , Obesidad , Sobrevivientes
7.
Behav Med ; 47(1): 21-30, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-31141465

RESUMEN

The present research sought to examine whether hatha yoga, implemented as an adjunctive intervention for major depression, influences markers of inflammation. A subset of 84 participants who were enrolled in a randomized controlled trial (RCT) of hatha yoga vs. health education control provided blood samples at baseline (pre-treatment) and at 3-(during treatment) and 10-week (end of treatment) follow-up visits. To be eligible for the RCT, participants met criteria for a current or recent (past two years) major depressive episode, had current elevated depression symptoms, and current antidepressant medication use. Venous blood was drawn between 2 and 6 pm and following at least one hour of fasting, and inflammatory markers (IL-6, CRP, and TNF-α) were assayed. Effects of participation in yoga relative to health education on inflammatory markers over time were examined with latent growth analyses. We observed a significant reduction in IL-6 concentrations in the yoga treatment group relative to the health education control group as demonstrated by a negative interaction between treatment group and slope of IL-6. TNF-α and CRP did not evidence significant interactions of treatment group by mean slope or intercept. In addition to the benefits of hatha yoga as an adjunctive intervention for individuals who have shown inadequate response to antidepressant medications, our findings point to possible benefits of yoga on IL-6 in depressed populations. Further research is needed to explore the effects of hatha yoga on immune function over time.


Asunto(s)
Trastorno Depresivo Mayor/sangre , Trastorno Depresivo Mayor/rehabilitación , Interleucina-6/sangre , Yoga , Adulto , Proteína C-Reactiva/metabolismo , Femenino , Estudios de Seguimiento , Humanos , Inflamación/sangre , Inflamación/terapia , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Rehabilitación Psiquiátrica , Factor de Necrosis Tumoral alfa/sangre
8.
Annu Rev Clin Psychol ; 16: 165-186, 2020 05 07.
Artículo en Inglés | MEDLINE | ID: mdl-32092280

RESUMEN

In seeking to understand mental health and disease, it is fundamental to identify the biological substrates that draw together the experiences and physiological processes that underlie observed psychological changes. Mitochondria are subcellular organelles best known for their central role in energetics, producing adenosine triphosphate to power most cellular processes. Converging lines of evidence indicate that mitochondria play a key role in the biological embedding of adversity. Preclinical research documents the effects of stress exposure on mitochondrial structure and function, and recent human research suggests alterations constituting recalibrations, both adaptive and nonadaptive. Current research suggests dynamic relationships among stress exposure, neuroendocrine signaling, inflammation, and mitochondrial function. These complex relationships are implicated in disease risk, and their elucidation may inform prevention and treatment of stress- and trauma-related disorders. We review and evaluate the evidence for mitochondrial dysfunction as a consequence of stress exposure and as a contributing factor to psychiatric disease.


Asunto(s)
Experiencias Adversas de la Infancia , Alostasis , Trastornos Mentales , Mitocondrias , Estrés Psicológico , Alostasis/fisiología , Humanos , Trastornos Mentales/inmunología , Trastornos Mentales/metabolismo , Trastornos Mentales/fisiopatología , Mitocondrias/fisiología , Estrés Psicológico/inmunología , Estrés Psicológico/metabolismo , Estrés Psicológico/fisiopatología
9.
Neuromodulation ; 22(8): 898-903, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30153360

RESUMEN

BACKGROUND: Cognitive behavioral therapy (CBT) is effective in the treatment of major depressive disorder (MDD). Transcranial Direct Current Stimulation (tDCS) has demonstrated preliminary antidepressant effects and beneficial effects on cognitive function. OBJECTIVE: We investigated the feasibility and acceptability of using tDCS to enhance the effects of computer-based CBT for treatment of MDD. MATERIALS AND METHODS: In a randomized, double-blind, sham-controlled study, 14 patients with MDD on stable or no pharmacotherapy received active or sham bifrontal tDCS for four weeks with concurrent CBT. RESULTS: Ten participants completed the protocol. Three withdrew from the study because of lack of efficacy or dislike of the eCBT program. One was discontinued from the protocol by the investigators. Treatment was well tolerated, and most side-effects were mild and consistent with prior tDCS research. Pooled data from both groups showed significant baseline to endpoint improvement in depression (p = 0.008). Overall percent change on the HAMD-21 was 28.98%. The study was underpowered to detect differences in tDCS treatment groups. CONCLUSIONS: Combining tDCS with computer-based CBT is feasible for MDD. Further work is needed to evaluate potential synergistic effects of combined tDCS and CBT.


Asunto(s)
Terapia Cognitivo-Conductual/métodos , Trastorno Depresivo Mayor/terapia , Terapia Asistida por Computador/métodos , Estimulación Transcraneal de Corriente Directa/métodos , Adulto , Cognición , Terapia Combinada , Trastorno Depresivo Mayor/psicología , Método Doble Ciego , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Escalas de Valoración Psiquiátrica , Estimulación Transcraneal de Corriente Directa/efectos adversos
10.
Dev Psychopathol ; 29(5): 1619-1626, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29162169

RESUMEN

Serotonin signaling pathways play a key role in brain development, stress reactivity, and mental health. Epigenetic alterations in the serotonin system may underlie the effect of early life stress on psychopathology. The current study examined methylation of the serotonin receptor 2A (HTR2A) gene in a sample of 228 children including 119 with child welfare documentation of moderate to severe maltreatment within the last 6 months. Child protection records, semistructured interviews in the home, and parent reports were used to assess child stress exposure, psychiatric symptoms, and behavior. The HTR2A genotype and methylation of HTR2A were measured at two CpG sites (-1420 and -1224) from saliva DNA. HTR2A genotype was associated with HTR2A methylation at both CpG sites. HTR2A genotype also moderated associations of contextual stress exposure and HTR2A methylation at site -1420. Contextual stress was positively associated with -1420 methylation among A homozygotes, but negatively associated with -1420 methylation among G homozygotes. Posttraumatic stress disorder and major depressive disorder symptoms were negatively associated with methylation at -1420, but positively associated with methylation at -1224. Results support the view that the serotonin system is sensitive to stress exposure and psychopathology, and HTR2A methylation may be a mechanism by which early adversity is biologically encoded.


Asunto(s)
Maltrato a los Niños/psicología , Metilación de ADN , Trastorno Depresivo Mayor/genética , Receptor de Serotonina 5-HT2A/genética , Trastornos por Estrés Postraumático/genética , Preescolar , Trastorno Depresivo Mayor/psicología , Femenino , Interacción Gen-Ambiente , Genotipo , Humanos , Masculino , Regiones Promotoras Genéticas , Transducción de Señal/genética , Trastornos por Estrés Postraumático/psicología , Estrés Psicológico/genética , Estrés Psicológico/psicología
11.
Dev Psychopathol ; 29(5): 1635-1648, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29162170

RESUMEN

Epigenetics processes may play a vital role in the biological embedding of early environmental adversity and the development of psychopathology. Accumulating evidence suggests that maltreatment is linked to methylation of the glucocorticoid receptor gene, nuclear receptor subfamily 3, group C, member 1 (NR3C1), which is a key regulator of the hypothalamus-pituitary-adrenal axis. However, prior work has been exclusively cross-sectional, greatly constraining our understanding of stress-related epigenetic processes over time. In the current study, we examined the effect of maltreatment and other adversity on change in NR3C1 methylation among at-risk preschoolers to begin to characterize within-child epigenetic changes during this sensitive developmental period. Participants were 260 preschoolers (3-5 years old, 53.8% female), including 51.5% with moderate to severe maltreatment in the past 6 months. Child protection records, semistructured interviews, and parent reports were used to assess child stress exposure. Methylation of exons 1D and 1F of NR3C1 via saliva DNA were measured at two time points approximately 6 months apart. Results indicate that maltreated children evidence higher baseline levels of NR3C1 methylation, significant decreases in methylation over time, and then at follow-up, lower levels of methylation, relative to nonmaltreated preschoolers. Findings from the current study highlight the complex nature of stress-related epigenetic processes during early development.


Asunto(s)
Maltrato a los Niños , Desarrollo Infantil/fisiología , Metilación de ADN , Receptores de Glucocorticoides/genética , Preescolar , Exones , Femenino , Humanos , Sistema Hipotálamo-Hipofisario/metabolismo , Masculino , Sistema Hipófiso-Suprarrenal/metabolismo , Receptores de Glucocorticoides/metabolismo
12.
Dev Psychopathol ; 29(5): 1627-1634, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-29162173

RESUMEN

FK506 binding protein 5 (FKBP5) alters stress response system functioning, and childhood maltreatment is associated with methylation of the FKBP5 gene. Yet it is unknown if maltreatment contributes to change in FKBP5 methylation over time. The current study draws upon a sample of 231 preschoolers, including 123 with child welfare documentation of moderate to severe maltreatment in the past 6 months, to understand if maltreatment contributes to change in FKBP5 methylation over a 6-month period. Review of child protection records and semistructured interviews in the home were used to assess maltreatment and exposure to other contextual stressors, as well as service utilization. Methylation of FKBP5 at two CpG sites in intron 7 was measured from saliva DNA at the time of initial study enrollment, and 6 months following enrollment. Child maltreatment was associated with change in FKBP5 methylation over time, but only when children were exposed to high levels of other contextual stressors. Service utilization was associated with increases in methylation over time, but only among children with the FKPB5 rs1360780 protective CC genotype. Methylation of FKBP5 is sensitive to stress exposure and may be a mechanism linking early adversity to long-term health and developmental outcomes.


Asunto(s)
Maltrato a los Niños , Metilación de ADN , Proteínas de Unión a Tacrolimus/genética , Preescolar , Femenino , Genotipo , Humanos , Intrones , Masculino
13.
Child Dev ; 87(1): 86-97, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26822445

RESUMEN

Accumulating evidence suggests that early adversity is linked to methylation of the glucocorticoid receptor (GR) gene, NR3C1, which is a key regulator of the hypothalamic-pituitary-adrenal axis. Yet no prior work has considered the contribution of methylation of NR3C1 to emerging behavior problems and psychopathology in childhood. This study examined the links between methylation of NR3C1 and behavior problems in preschoolers. Data were drawn from a sample of preschoolers with early adversity (n = 171). Children ranged in age from 3 to 5 years, were racially and ethnically diverse, and nearly all qualified for public assistance. Seventy-one children had child welfare documentation of moderate to severe maltreatment in the past 6 months. Structured record review and interviews in the home were used to assess early adversity. Parents reported on child internalizing and externalizing behavior problems. Methylation of NR3C1 at exons 1D , 1F , and 1H were measured via sodium bisulfite pyrosequencing from saliva DNA. Methylation of NR3C1 at exons 1D and 1F was positively associated with internalizing (r = .21, p < .01 and r = .23, p < .01, respectively), but not externalizing, behavior problems. Furthermore, NR3C1 methylation mediated effects of early adversity on internalizing behavior problems. These results suggest that methylation of NR3C1 contributes to psychopathology in young children, and NR3C1 methylation from saliva DNA is salient to behavioral outcomes.


Asunto(s)
Maltrato a los Niños , Conducta Infantil/fisiología , Metilación de ADN , Problema de Conducta , Trauma Psicológico/metabolismo , Receptores de Glucocorticoides/metabolismo , Estrés Psicológico/metabolismo , Preescolar , Femenino , Humanos , Masculino , Pobreza
14.
Dev Psychopathol ; 28(4pt2): 1319-1331, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27691985

RESUMEN

Early childhood experiences have lasting effects on development, including the risk for psychiatric disorders. Research examining the biologic underpinnings of these associations has revealed the impact of childhood maltreatment on the physiologic stress response and activity of the hypothalamus-pituitary-adrenal axis. A growing body of literature supports the hypothesis that environmental exposures mediate their biological effects via epigenetic mechanisms. Methylation, which is thought to be the most stable form of epigenetic change, is a likely mechanism by which early life exposures have lasting effects. We present recent evidence related to epigenetic regulation of genes involved in hypothalamus-pituitary-adrenal axis regulation, namely, the glucocorticoid receptor gene (nuclear receptor subfamily 3, group C, member 1 [NR3C1]) and FK506 binding protein 51 gene (FKBP5), after childhood adversity and associations with risk for psychiatric disorders. Implications for the development of interventions and future research are discussed.


Asunto(s)
Maltrato a los Niños/psicología , Epigénesis Genética/genética , Glucocorticoides/fisiología , Sistema Hipotálamo-Hipofisario/fisiopatología , Sistema Hipófiso-Suprarrenal/fisiopatología , Receptores de Glucocorticoides/genética , Transducción de Señal/genética , Estrés Psicológico/complicaciones , Adulto , Niño , Femenino , Humanos , Trastornos Mentales/genética , Trastornos Mentales/psicología , Factores de Riesgo , Medio Social , Estrés Psicológico/psicología , Proteínas de Unión a Tacrolimus/genética
15.
Dev Psychopathol ; 27(4 Pt 2): 1637-45, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26535949

RESUMEN

A growing body of evidence suggests that alterations of the stress response system may be a mechanism by which childhood maltreatment alters risk for psychopathology. FK506 binding protein 51 (FKBP5) binds to the glucocorticoid receptor and alters its ability to respond to stress signaling. The aim of the present study was to examine methylation of the FKBP5 gene (FKBP5), and the role of an FKBP5 genetic variant, in relation to childhood maltreatment in a sample of impoverished preschool-aged children. One hundred seventy-four families participated in this study, including 69 with child welfare documentation of moderate to severe maltreatment in the past 6 months. The children, who ranged in age from 3 to 5 years, were racially and ethnically diverse. Structured record review and interviews in the home were used to assess a history of maltreatment, other traumas, and contextual life stressors; and a composite variable assessed the number exposures to these adversities. Methylation of two sites in intron 7 of FKBP5 was measured via sodium bisulfite pyrosequencing. Maltreated children had significantly lower levels of methylation at both CpG sites (p < .05). Lifetime contextual stress exposure showed a trend for lower levels of methylation at one of the sites, and a trend for an interaction with the FKBP5 polymorphism. A composite adversity variable was associated with lower levels of methylation at one of the sites as well (p < .05). FKBP5 alters glucocorticoid receptor responsiveness, and FKBP5 gene methylation may be a mechanism of the biobehavioral effects of adverse exposures in young children.


Asunto(s)
Maltrato a los Niños/psicología , Pobreza/psicología , Estrés Psicológico/metabolismo , Proteínas de Unión a Tacrolimus/genética , Preescolar , Metilación de ADN/genética , Femenino , Humanos , Masculino , Polimorfismo Genético , Riesgo
16.
Dev Psychopathol ; 27(2): 567-76, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25997772

RESUMEN

Exposure to early life adversity is linked to impaired affective, cognitive, and behavioral functioning and increases risk for various psychiatric and medical conditions. Stress-induced increases in pro-inflammatory cytokines may be a biological mechanism of these effects. Few studies have examined cytokine levels in children experiencing early life adversity, and very little research has investigated cytokines or other markers of inflammation in saliva. In the present study, we examined salivary interleukin (IL)-1ß and C-reactive protein (CRP) levels in relation to stress exposure in 40 children aged 3 to 5 years who were enrolled in a larger study of early life adversity. Childhood maltreatment status was assessed via review of child welfare records. Contextual stress exposure, traumatic life event history, and symptoms of psychopathology were assessed via caregiver interviews at a home visit. In a subsequent visit, salivary IL-1ß and CRP were obtained before and after participation in four emotion-eliciting tasks. The number of past-month contextual stressors, lifetime contextual stressors, and traumatic life events each demonstrated a significant main effect on IL-1ß. Baseline IL-1ß was positively associated with each of the significant main-effect adversities. Postchallenge IL-1ß displayed positive associations with each adversity variable, but these were not significant. CRP was not significantly associated with any of the adversity variables. Given the evidence suggesting the involvement of IL-1ß in the neuropathology of psychiatric conditions, these results may have important implications for developmental outcomes.


Asunto(s)
Interleucina-1beta/análisis , Acontecimientos que Cambian la Vida , Estrés Psicológico/metabolismo , Biomarcadores/análisis , Proteína C-Reactiva/análisis , Preescolar , Femenino , Humanos , Inflamación/metabolismo , Masculino , Saliva/química , Medio Social
17.
Dev Psychopathol ; 27(2): 577-85, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25997773

RESUMEN

Epigenetic modifications to the genome are a key mechanism involved in the biological encoding of experience. Animal studies and a growing body of literature in humans have shown that early adversity is linked to methylation of the gene for the glucocorticoid receptor (GR), which is a key regulator of the hypothalamic-pituitary-adrenal axis as well as a broad range of physiological systems including metabolic and immune function. One hundred eighty-four families participated, including n = 74 with child welfare documentation of moderate-severe maltreatment in the past 6 months. Children ranged in age from 3 to 5 years, and were racially and ethnically diverse. Structured record review and interviews in the home were used to assess a history of maltreatment, other traumas, and contextual life stressors, and a composite variable assessed the number exposures to these adversities. Methylation of regions 1(D), 1(F), and 1(H) of the GR gene was measured via sodium bisulfite pyrosequencing. The composite measure of adversity was positively correlated with methylation at exons 1(D) and 1(F) in the promoter of the GR gene. Individual stress measures were significantly associated with a several CpG sites in these regions. GR gene methylation may be a mechanism of the biobehavioral effects of adverse exposures in young children.


Asunto(s)
Maltrato a los Niños , Metilación de ADN , Sistema Hipotálamo-Hipofisario/metabolismo , Sistema Hipófiso-Suprarrenal/metabolismo , Regiones Promotoras Genéticas , Receptores de Glucocorticoides/genética , Preescolar , Epigénesis Genética , Exones , Femenino , Humanos , Masculino
18.
Adv Psychosom Med ; 34: 92-108, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25832516

RESUMEN

Telomeres are structures of tandem TTAGGG repeats that are found at the ends of chromosomes and preserve genomic DNA by serving as a disposable buffer to protect DNA termini during chromosome replication. In this process, the telomere itself shortens with each cell division and can consequently be thought of as a cellular 'clock', reflecting the age of a cell and the time until senescence. Telomere shortening and changes in the levels of telomerase, the enzyme that maintains telomeres, occur in the context of certain somatic diseases and in response to selected physical stressors. Emerging evidence indicates that telomeres shorten with exposure to psychosocial stress (including early-life stress) and perhaps in association with some psychiatric disorders. These discoveries suggest that telomere shortening might be a useful biomarker for the overall stress response of an organism to various pathogenic conditions. In this regard, telomeres and their response to both somatic and psychiatric illness could serve as a unifying stress-response biomarker that crosses the brain/body distinction that is often made in medicine. Prospective studies will help to clarify whether this biomarker has broad utility in psychiatry and medicine for the evaluation of responses to psychosocial stressors. The possibility that telomere shortening can be slowed or reversed by psychiatric and psychosocial interventions could represent an opportunity for developing novel preventative and therapeutic approaches.


Asunto(s)
Biomarcadores/metabolismo , Maltrato a los Niños , Trastornos Mentales/metabolismo , Estrés Psicológico/metabolismo , Telómero/metabolismo , Niño , Humanos
19.
Dev Psychopathol ; 26(4 Pt 2): 1277-87, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25422961

RESUMEN

Evidence now implicates inflammatory proteins in the neurobiology of internalizing disorders. Genetic factors may influence individual responses to maltreatment; however, little work has examined inflammatory genetic variants in adults and none in children. The present study examined the role of an interleukin 1B gene (IL1B) variant in preschoolers exposed to maltreatment and other forms of adversity in internalizing symptom development. One hundred ninety-eight families were enrolled, with one child (age 3-5 years) from each family. Adversity measures included child protective service documentation of moderate-severe maltreatment in the last 6 months and interview-assessed contextual stressors. Internalizing symptoms were measured using the Child Behavior Checklist and the Diagnostic Infant and Preschool Assessment. Maltreated children had higher major depressive disorder (MDD) and posttraumatic stress disorder symptoms and marginally higher internalizing symptoms on the Child Behavior Checklist. Controlling for age, sex, and race, IL1B genotype was associated with MDD symptoms (p = .002). Contextual stressors were significantly associated with MDD and posttraumatic stress disorder and marginally with internalizing symptoms. The IL1B genotype interacted with contextual stress such that children homozygous for the minor allele had more MDD symptoms (p = .045). These results suggest that genetic variants of IL1B may modulate the development of internalizing symptoms in the face of childhood adversity.


Asunto(s)
Maltrato a los Niños/psicología , Depresión , Trastorno Depresivo Mayor , Interacción Gen-Ambiente , Interleucina-1beta/genética , Acontecimientos que Cambian la Vida , Trastornos por Estrés Postraumático , Preescolar , Depresión/etiología , Depresión/genética , Trastorno Depresivo Mayor/etiología , Trastorno Depresivo Mayor/genética , Femenino , Humanos , Masculino , Trastornos por Estrés Postraumático/etiología , Trastornos por Estrés Postraumático/genética
20.
J Psychiatr Res ; 169: 298-306, 2024 01.
Artículo en Inglés | MEDLINE | ID: mdl-38070470

RESUMEN

The emergence of psychiatric symptoms is a common consequence of childhood stress exposure. However, there are a dearth of reliable clinical hallmarks or physiological biomarkers to predict post-trauma symptom emergence. The objective of this study was to examine if childhood stressors and stress-related symptoms are associated with altered midline theta power (MTP) during cognitive control demands, and how these associations interact with gender and early adversity. N = 53 children (ages 9-13 years old) from a longitudinal study of children maltreated during early childhood and non-maltreated children participated in this study. EEG recorded neural activity during a Zoo-Themed Go/No-Go task. Stress-related symptoms, recent stressful events, and other adversity experiences were identified. MTP was analyzed with clinical variables in a series of follow-up analyses. The number of stressors in the past six months was negatively correlated with MTP in those with low preschool adversity, but not in those with high preschool adversity. MTP was higher in girls than in boys, and the associations of MTP with stressors and symptoms were moderated by gender. MTP was negatively associated with stressors in the past six months in girls, while in boys, MTP was associated with stress-related symptoms. Childhood stressful events were associated with reduced MTP during cognitive control demands, and this was finding was moderated by gender and early life adversity. These preliminary findings suggest that boys and girls may process stressful experiences in distinct ways, and preschool adversity may potentially blunt the interaction between current stress and neural dynamics. However, ongoing investigation is needed.


Asunto(s)
Depresión , Estrés Psicológico , Masculino , Niño , Femenino , Humanos , Preescolar , Adolescente , Estudios Longitudinales , Estrés Psicológico/psicología , Depresión/psicología , Escolaridad , Cognición
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