Examining profiles of convergence and divergence in reports of parental warmth: Links to adolescent developmental problems.

Parental warmth during the transition from childhood to adolescence is a key protective factor against a host of adolescent problems, including substance use, maladjustment, and diminished well-being. Moreover, adolescents and parents often disagree in their perceptions of parenting quality, and these discrepancies may confer risk for problem outcomes. The current study applies latent profile analysis to a sample of 687 mother-father-6th grade adolescent triads to identify patterns of adolescent-parent convergence and divergence in perceptions of parental warmth. Five profiles were identified, and associations with adolescent positive well-being, substance use, and maladjustment outcomes in 9th grade were assessed. Patterns of divergence in which adolescents had a pronounced negative perception of parental warmth compared to parents, as well as those wherein pronounced divergence was present in only one adolescent-parent dyad, were associated with diminished positive well-being compared to adolescents who had more positive perceptions of warmth than parents. Having more negative perceptions of warmth compared to parents was also associated with elevated risk for alcohol and marijuana initiation, but only when the divergence was pronounced rather than more moderate. These findings add nuance to findings from previous between-family investigations of informant discrepancies, calling for further family-centered methods for investigating multiple perspectives.

Innovation to Impact: Introduction to the Special Issue on Evidence from the Teen Pregnancy Prevention Program Experiment with Innovation.

Congress has provided funding for the federal Teen Pregnancy Prevention (TPP) Program since 2009 for spending beginning in Fiscal Year 2010. Designated TPP programs develop, test, and evaluate innovations for reducing teen pregnancy, teen pregnancy disparities, and associated risk factors and for promoting positive youth development. Since its inception, the TPP Program has experimented with multiple uniquely structured cohorts of innovation and demonstration projects, producing critical insights into equitable and effective public health innovation while also serving as a highly productive contributor of evidence-based, TPP innovations for scale. This article briefly documents the innovation history of the TPP Program and its iterations in response to the shifting needs of the field. We then synthesize findings from the fifteen TPP innovators published in this special edition. We highlight emergent priorities of the TPP Program informed by this federal experiment in rigorous adolescent sexual health innovation development, testing, evaluation, and scaling and conclude by discussing how the TPP program adapted and refined its approach for fostering dynamic innovation-to-scale projects over time.

The Impact of Brief Interventions With Condom Demonstrations on Youth: A Systematic Review.

PURPOSE: This review examined whether there is evidence that brief interventions with condom demonstration lessons have impacts on behavioral and nonbehavioral outcomes for youth and young adults. METHODS: We conducted a systematic review using a prespecified search strategy and processes consistent with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We identified a pool of 11 eligible studies that tested the effectiveness of a single-session intervention that was no longer than 60 minutes and included a condom demonstration. We included all outcomes at all time points and organized them into eight domains. RESULTS: Single-session interventions with condom demonstrations showed favorable short-term and long-term impacts for samples of largely sexually active youth. Studies found statistically significant impacts in 29%-50% of the tests for effects on attitudes toward condoms, knowledge of sexual health and condom use, perceptions of condom use and sexuality, and condoms use intentions. DISCUSSION: Our review found evidence that brief interventions with condom demonstrations have potential effects on behavioral and nonbehavioral outcomes for vulnerable and transient sexually active youth warranting future studies to assess condom demonstrations in isolation.

Suppressive effects of iron chelation in clear cell renal cell carcinoma and their dependency on VHL inactivation.

Increasing data implicate iron accumulation in tumorigenesis of the kidney, particularly the clear cell renal cell carcinoma (ccRCC) subtype. The von Hippel Lindau (VHL)/hypoxia inducible factor-α (HIF-α) axis is uniquely dysregulated in ccRCC and is a major regulator and regulatory target of iron metabolism, yet the role of iron in ccRCC tumorigenesis and its potential interplay with VHL inactivation remains unclear. We investigated whether ccRCC iron accumulation occurs due to increased cell dependency on iron for growth and survival as a result of VHL inactivation. Free iron levels were compared between four VHL-mutant ccRCC cell lines (786-0, A704, 769-P, RCC4) and two benign renal tubule epithelial cell lines (RPTEC, HRCEp) using the Phen Green SK fluorescent iron stain. Intracellular iron deprivation was achieved using two clinical iron chelator drugs, deferasirox (DFX) and deferoxamine (DFO), and chelator effects were measured on cell line growth, cell cycle phase, apoptosis, HIF-1α and HIF-2α protein levels and HIF-α transcriptional activity based on expression of target genes CA9, OCT4/POU5F1 and PDGFß/PDGFB. Similar assays were performed in VHL-mutant ccRCC cells with and without ectopic wild-type VHL expression. Baseline free iron levels were significantly higher in ccRCC cell lines than benign renal cell lines. DFX depleted cellular free iron more rapidly than DFO and led to greater growth suppression of ccRCC cell lines (>90% at ~30-150 µM) than benign renal cell lines (~10-50% at up to 250 µM). Similar growth responses were observed using DFO, with the exception that a prolonged treatment duration was necessary to deplete cellular iron adequately for differential growth suppression of the less susceptible A704 ccRCC cell line relative to benign renal cell lines. Apoptosis and G1-phase cell cycle arrest were identified as potential mechanisms of chelator growth suppression based on their induction in ccRCC cell lines but not benign renal cell lines. Iron chelation in ccRCC cells but not benign renal cells suppressed HIF-1α and HIF-2α protein levels and transcriptional activity, and the degree and timing of HIF-2α suppression correlated with the onset of apoptosis. Restoration of wild-type VHL function in ccRCC cells was sufficient to prevent chelator-induced apoptosis and G1 cell cycle arrest, indicating that ccRCC susceptibility to iron deprivation is VHL inactivation-dependent. In conclusion, ccRCC cells are characterized by high free iron levels and a cancer-specific dependency on iron for HIF-α overexpression, cell cycle progression and apoptotic escape. This iron dependency is introduced by VHL inactivation, revealing a novel interplay between VHL/HIF-α dysregulation and ccRCC iron metabolism. Future study is warranted to determine if iron deprivation using chelator drugs provides an effective therapeutic strategy for targeting HIF-2α and suppressing tumor progression in ccRCC patients.