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Toward Tailored Interventions: Sympathetic and Parasympathetic Functioning Predicts Responses to an Intervention for Conduct Problems Delivered in Two Formats.

ABSTRACT: Coping Power is an evidence-based preventive intervention for youth with aggressive behavior problems that has traditionally been delivered in small group formats, but because of concerns about potentially diminished effects secondary to aggregation of high-risk youth, an individual format of Coping Power has been developed. The current study examined whether physiological characteristics of the child may provide information about which intervention delivery format works best for that individual. Indicators of sympathetic and parasympathetic nervous system functioning were examined in 360 fourth-grade children (65% male; 76.4% self-reported African-American) who were randomly assigned to Group Coping Power (GCP) or Individual Coping Power (ICP) (Lochman et al. 2015). Longitudinal assessments of teacher- and parent-reported proactive and reactive aggression were collected through a 1-year follow-up. For children with higher initial levels of aggression, those with lower parasympathetic functioning at pre-intervention showed greater reductions in teacher-rated proactive aggression in the ICP condition than the GCP condition. For children with high parasympathetic functioning, there was no differential effect of intervention format. Regardless of intervention format, youth with lower levels of sympathetic functioning at pre-intervention demonstrated greater reductions in teacher-rated proactive aggression. These findings suggest that physiological indicators may be worth considering in future studies examining which youth respond best to specific types of interventions.

SUBMITTER: Glenn AL

PROVIDER: S-EPMC6035887 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature

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Project description:Variants in transcription factor 7-like 2 (266096218TCF7L2266096218USuser266096218Gene names have been italicized per house style. Please check and confirm whether there are other instances that need to be italicized or instances where italics have been inappropriately applied.) gene have been found strongly associated with an increased risk of type 2 diabetes, as well as with an impairment of glucagon-like peptide-1 (GLP-1) signalling chain. In rats, stimulation of central GLP-1 receptors increases heart rate and activates autonomic regulatory neurons. We aimed to evaluate the potential role of TCF7L2 gene polymorphisms on sympathovagal response in relation to changes in plasma insulin and/or GLP-1 concentration after glucose ingestion. Genotyping was performed for rs12255372 and rs7903146 TCF7L2 gene variants in 250 non-related healthy volunteers (mean age 27±3 years). Consistent with previous reports, both single-nucleotide polymorphisms were in strong linkage disequilibrium (D'=0.87, r(2)=0.76). A subset of 167 patients underwent an oral glucose tolerance test while a continuous recording of heart rate variability was performed. At baseline, no differences in fasting plasma insulin, in GLP-1 levels and in LF/HF (low frequency/high frequency) ratio between the three genotypes were found. Along with glucose ingestion TT subjects had lower INS(AUC) (insulin area under curve), as well as higher LF/HF(AUC) (LF/HF area under curve) values. No difference in GLP-1(AUC) (GLP-1 area under curve) between TCF7L2 gene variants was found. A multivariate analysis including multiple covariates showed that only INS(AUC,) GLP-1(AUC) and TCF7L2 gene variants were independently associated with LF/HF(AUC). In conclusion, TT genotype of rs12255372 and rs7903146 TCF7L2 gene variants is associated with lower insulin secretion and higher cardiosympathetic activity. Moreover, such effect is independent of GLP-1 and insulin plasma concentrations suggesting a potential role of such gene variants in increasing cardiovascular risk through enhanced sympathetic nervous system activity.

Project description:Exposure to community violence through witnessing or being directly victimized has been associated with conduct problems in a range of studies. However, the relationship between community violence exposure (CVE) and conduct problems has never been studied separately in healthy individuals and individuals with conduct disorder (CD). Therefore, it is not clear whether the association between CVE and conduct problems is due to confounding factors, because those with high conduct problems also tend to live in more violent neighborhoods, i.e., an ecological fallacy. Hence, the aim of the present study was: (1) to investigate whether the association between recent CVE and current conduct problems holds true for healthy controls as well as adolescents with a diagnosis of CD; (2) to examine whether the association is stable in both groups when including effects of aggression subtypes (proactive/reactive aggression), age, gender, site and socioeconomic status (SES); and (3) to test whether proactive or reactive aggression mediate the link between CVE and conduct problems. Data from 1178 children and adolescents (62% female; 44% CD) aged between 9 years and 18 years from seven European countries were analyzed. Conduct problems were assessed using the Kiddie-Schedule of Affective Disorders and Schizophrenia diagnostic interview. Information about CVE and aggression subtypes was obtained using self-report questionnaires (Social and Health Assessment and Reactive-Proactive aggression Questionnaire (RPQ), respectively). The association between witnessing community violence and conduct problems was significant in both groups (adolescents with CD and healthy controls). The association was also stable after examining the mediating effects of aggression subtypes while including moderating effects of age, gender and SES and controlling for effects of site in both groups. There were no clear differences between the groups in the strength of the association between witnessing violence and conduct problems. However, we found evidence for a ceiling effect, i.e., individuals with very high levels of conduct problems could not show a further increase if exposed to CVE and vice versa. Results indicate that there was no evidence for an ecological fallacy being the primary cause of the association, i.e., CVE must be considered a valid risk factor in the etiology of CD.

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Toward Tailored Interventions: Sympathetic and Parasympathetic Functioning Predicts Responses to an Intervention for Conduct Problems Delivered in Two Formats.

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