View clinical trials related to Behavior and Behavior Mechanisms.
Filter by:The purpose of this study is to understand the factors that lead to adolescent sexual risk behavior by investigating both the family contexts and romantic relationships that influence adolescent couples' decision-making.
Adolescents with solid organ transplants have poorer outcomes than adults, and do not respond as well to post-rejection treatment. In addition to well-recognized declines in individual health-related quality of life, premature graft loss creates considerable health and economic burdens. High nonadherence rates among adolescents are believed to contribute majorly to rejection, premature allograft dysfunction and failure. Studies suggest that a telephone-based peer mentoring approach, with texting and e-communication, is a promising, practical means to promote medication adherence in adolescent solid organ transplant recipients. The study's main objectives are 1) to determine the efficacy of peer mentoring to improve medication adherence and health-related quality of life vs. usual care in adolescents and young adults with solid organ transplants, and 2) to determine the mechanisms through which peer mentoring impacts medication adherence and health-related quality of life.
The purpose of this study is to test the feasibility and efficacy of a triadic intervention designed to target both healthcare providers and parents in order to prevent adolescent sexual risk behavior in Latino and African American adolescents. The intervention will be administered in the context of mothers waiting for their children to complete a non-acute care visit.
This observational study seeks to establish evidence: 1. that physiologic changes, unrelated to effect on the Phenylalanine Hydroxylase (PAH) enzyme, occur in Phenylketonuria (PKU) patients who are treated with sapropterin (Kuvan®) therapy, 2. that these changes may be caused by enhanced neurotransmitter synthesis in the brain or an upregulation of gene expression (increasing the ability of genes to produce functional enzymes), 3. and that beneficial changes in behavior and cognition, especially executive functioning skills may result. The objective of this study is to correlate any change in behavior and executive function skills of PKU patients who are non-responsive to sapropterin effect on the PAH enzyme, as defined by lowered blood PHE levels, with urine neurotransmitter levels and broad gene expression prior to and after sapropterin administration. Expected outcomes would include evidence of sapropterin effects on upregulation of enzymes other than PAH that control neurotransmitter synthesis, and any resulting correlation with behavioral and cognitive changes. The investigators hope this study will inform further detailed investigations into the biochemical and molecular actions of sapropterin (Kuvan®) that lead to increased understanding of possible treatment effects beyond a lowered blood PHE response.
This study will evaluate the effectiveness of a parent-based intervention in reducing sexual risk behavior in high-risk Latino and African-American adolescents.