Dataset Information

Extending Previous cG×I Findings on 5-HTTLPR's Moderation of Intervention Effects on Adolescent Substance Misuse Initiation.

ABSTRACT: This study addresses replication in candidate gene × environment interaction (cG×E) research by investigating if the key findings from Brody, Beach, Philibert, Chen, and Murry (2009) can be detected using data (N = 1,809) from the PROSPER substance use preventive intervention delivery system. Parallel to Brody et al., this study tested the hypotheses that substance misuse initiation would increase faster from age 11 to age 14 and be higher at age 14 among: (a) 5-HTTLPR short carrier adolescents versus long homozygotes, (b) control versus intervention adolescents, and (c) 5-HTTLPR short carriers in the control condition versus all other participants. The hypotheses were generally supported and results were consistent with Brody et al.'s cG×I finding. Results are discussed in light of replication issues in cG×E research and implications for intervention.

SUBMITTER: Schlomer GL

PROVIDER: S-EPMC5422137 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Extending Previous cG×I Findings on 5-HTTLPR's Moderation of Intervention Effects on Adolescent Substance Misuse Initiation.

Schlomer Gabriel L GL Cleveland H Harrington HH Feinberg Mark E ME Wolf Pedro S A PSA Greenberg Mark T MT Spoth Richard L RL Redmond Cleve C Tricou Eric P EP Vandenbergh David J DJ

Child development 20161108 6

This study addresses replication in candidate gene × environment interaction (cG×E) research by investigating if the key findings from Brody, Beach, Philibert, Chen, and Murry (2009) can be detected using data (N = 1,809) from the PROSPER substance use preventive intervention delivery system. Parallel to Brody et al., this study tested the hypotheses that substance misuse initiation would increase faster from age 11 to age 14 and be higher at age 14 among: (a) 5-HTTLPR short carrier adolescents ...[more]

PMID: 27861757

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Project description:BackgroundReducing meat consumption is often advised; however, inadvertent nutritional deficiencies during pregnancy may result in residual neurodevelopmental harms to offspring. This study assessed possible effects of maternal diets in pregnancy on adverse substance use among adolescent offspring.MethodsPregnant women and their 13-year-old offspring taking part in a prospective birth cohort study, the Avon Longitudinal Study of Parents and Children (ALSPAC), provided Food Frequency Questionnaire data from which dietary patterns were derived using principal components analysis. Multivariable logistic regression models including potential confounders evaluated adverse alcohol, cannabis, and tobacco use of the children at 15 years of age.ResultsLower maternal meat consumption was associated with greater problematic substance use among 15-year-old offspring in dose-response patterns. Comparing never to daily meat consumption after adjustment, risks were greater for all categories of problem substance use: alcohol, odds ratio OR = 1.75, 95% CI = (1.23, 2.56), p < 0.001; tobacco use OR = 1.85, 95% CI = (1.28, 2.63), p < 0.001; and cannabis OR = 2.70, 95% CI = (1.89, 4.00), p < 0.001. Given the likelihood of residual confounding, potential causality was evaluated using stratification for maternal allelic variants that impact biological activity of cobalamin (vitamin B12) and iron. Lower meat consumption disproportionally increased the risks of offspring substance misuse among mothers with optimally functional (homozygous) variants (rs1801198) of the gene transcobalamin 2 gene (TCN2) which encodes the vitamin B12 transport protein transcobalamin 2 implicating a causal role for cobalamin deficits. Functional maternal variants in iron metabolism were unrelated to the adverse substance use. Risks potentially attributable to cobalamin deficits during pregnancy include adverse adolescent alcohol, cannabis, and tobacco use (14, 37, and 23, respectively).ConclusionsLower prenatal meat consumption was associated with increased risks of adolescent substance misuse. Interactions between TCN2 variant status and meat intake implicate cobalamin deficiencies.

Project description:PurposeResearch consistently connects parental and youth substance misuse, yet less is known about the mechanisms driving this association among justice-involved youth. We examine whether harsh parenting is an explanatory mechanism for the association between parental substance use and parental mental health and youth substance use disorder in a sample of justice-involved youth.MethodsData were drawn from the Northwestern Juvenile Project, a large-scale longitudinal survey of mental health and substance misuse in a representative sample of youth in juvenile detention. Harsh parenting, child maltreatment, youth alcohol and cannabis use disorder, and parental substance misuse and mental health were assessed among 1,825 detained youth (35.95% female) at baseline, three-year follow-up, and four-year follow-up.ResultsAt baseline, over 80% of youth used alcohol and/or cannabis; at the four-year follow-up, 16.35% and 19.69% of the youth were diagnosed with alcohol and cannabis use disorder, respectively. More than 20% of youth reported their parent misused substances and 6.11% reported a parent had a severe mental health need. Black youth experienced significantly fewer types of harsh parenting compared to White youth. Multivariate path analyses revealed harsh parenting mediated the association between parental substance misuse and mental health on youth alcohol and cannabis use disorder. Harsh parenting that does not rise to the level of child maltreatment mediated the association between parental substance misuse and mental health on youth alcohol use disorder; in contrast, child maltreatment did not mediate these associations. Multigroup analyses revealed the effect of harsh parenting on youth alcohol and cannabis use disorder did not vary across sex or race-ethnic subgroups.ConclusionsHarsh parenting represents one mechanism for the intergenerational continuity of alcohol and cannabis misuse and should be regularly assessed for and addressed in juvenile justice settings.

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Project description:Adolescents in residential level of care for substance-related problems have high risk of relapse following discharge. Parent engagement lowers relapse risk, but there are myriad barriers to engaging parents in residential treatment and continuing care. Parent SMART (Substance Misuse in Adolescents in Residential Treatment) is a technology-assisted parenting intervention that was designed to circumvent barriers associated with traditional, office-based continuing care interventions to better engage parents. This pilot randomized trial assessed the acceptability, feasibility, and preliminary effectiveness of Parent SMART as an adjunctive intervention to adolescent residential treatment-as-usual (TAU). Sixty-one parent-adolescent dyads were randomized to Parent SMART+TAU or TAU-only. Thirty-seven dyads were recruited from a short-term facility and 24 dyads were recruited from a long-term facility. Those randomized to Parent SMART received a multi-component technology-assisted intervention combining an off-the-shelf online parenting program, coaching sessions, and a parent networking forum. Parent and adolescent assessments were conducted at baseline, 6, 12, and 24-weeks post-discharge. Feasibility (e.g., parental effectiveness) and acceptability (e.g., parental satisfaction, willingness to recommend the intervention) benchmarks were specified a priori as the primary hypotheses. Secondary effectiveness indicators were the proportion of days adolescent used alcohol, cannabis, and any substance. All acceptability and feasibility benchmarks were met or exceeded among dyads in both short- and long-term residential. Generalized linear mixed models showed no significant effects pooled across sites. Analyses by facility revealed two significant time by condition interactions. Adolescents in short-term residential whose parents received Parent SMART showed fewer drinking days and fewer school problems over time, relative to adolescents whose parents received TAU. Results indicate that Parent SMART was both acceptable and feasible, with preliminary indication of effectiveness among those in short-term residential. A fully-powered trial is warranted to reliably test the effectiveness of Parent SMART and understand possible mechanisms of improvement.

Dataset Information

Extending Previous cG×I Findings on 5-HTTLPR's Moderation of Intervention Effects on Adolescent Substance Misuse Initiation.

Publications

Extending Previous cG×I Findings on 5-HTTLPR's Moderation of Intervention Effects on Adolescent Substance Misuse Initiation.

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