This investigation used meta-analytic techniques to evaluate the effectiveness of school-based prevention programming in reducing cannabis use among youth aged 12 to 19. It summarized the results from 15 studies published in peer-reviewed journals since 1999 and identified features that influenced program effectiveness. The results from the set of 15 studies indicated that these school-based programs had a positive impact on reducing students' cannabis use (d = 0.58, CI: 0.55, 0.62) compared to control conditions. Findings revealed that programs incorporating elements of several prevention models were significantly more effective than were those based on only a social influence model. Programs that were longer in duration (≥15 sessions) and facilitated by individuals other than teachers in an interactive manner also yielded stronger effects. The results also suggested that programs targeting high school students were more effective than were those aimed at middle-school students. Implications for school-based prevention programming are discussed.

The finding that drug use is more common than alcohol use among drivers highlights the need for a unique and separate societal response to the use of drugs by drivers commensurate with the extent of safety risks posed to road users. The observed differences between driving after drug use and driving after drinking have implications for enforcement and prevention.

The findings indicated that a second step of a stepped care approach did not significantly reduce binge-eating symptoms beyond the effects of USH alone. The study provided some evidence for the second step potentially to reduce factors known to maintain binge eating in the long run, such as attachment avoidance and interpersonal problems.

Simian immunodeficiency virus (SIV)-infected nonhuman primates can serve as a relevant model for AIDS neuropathogenesis. Current SIV-induced encephalitis (SIVE)/neurological complications of AIDS (neuroAIDS) models are generally associated with rapid progression to neuroAIDS, which does not reflect the tempo of neuroAIDS progression in humans. Recently, we isolated a neuropathogenic clone, SIVsm804E-CL757 (CL757), obtained from an SIV-infected rhesus macaque (RM). CL757 causes a more protracted progression to disease, inducing SIVE in 50% of inoculated animals, with high cerebral spinal fluid viral loads, multinucleated giant cells (MNGCs), and perivascular lymphocytic cuffing in the central nervous system (CNS). This latter finding is reminiscent of human immunodeficiency virus (HIV) encephalitis in humans but not generally observed in rapid progressor animals with neuroAIDS. Here, we studied which subsets of cells within the CNS were targeted by CL757 in animals with neurological symptoms of SIVE. Immunohistochemistry of brain sections demonstrated infiltration of CD4+ T cells (CD4) and macrophages (MΦs) to the site of MNGCs. Moreover, an increase in mononuclear cells isolated from the brain tissues of RMs with SIVE correlated with increased cerebrospinal fluid (CSF) viral load. Subset analysis showed a specific increase in brain CD4+ memory T cells (Br-mCD4), brain-MΦs (Br-MΦs), and brain B cells (Br-B cells). Both Br-mCD4s and Br-MΦs harbored replication-competent viral DNA, as demonstrated by virus isolation by coculture. However, only in animals exhibiting SIVE/neuroAIDS was virus isolated from Br-MΦs. These findings support the use of CL757 to study the pathogenesis of AIDS viruses in the central nervous system and indicate a previously unanticipated role of CD4s cells as a potential reservoir in the brain. IMPORTANCE While the use of combination antiretroviral therapy effectively suppresses systemic viral replication in the body, neurocognitive disorders as a result of HIV infection of the central nervous system (CNS) remain a clinical problem. Therefore, the use of nonhuman primate models is necessary to study mechanisms of neuropathogenesis. The neurotropic, molecular clone SIVsm804E-CL757 (CL757) results in neuroAIDS in 50% of infected rhesus macaques approximately 1 year postinfection. Using CL757-infected macaques, we investigate disease progression by examining subsets of cells within the CNS that were targeted by CL757 and could potentially serve as viral reservoirs. By isolating mononuclear cells from the brains of SIV-infected rhesus macaques with and without encephalitis, we show that immune cells invade the neuroparenchyma and increase in number in the CNS in animals with SIV-induced encephalitis (SIVE). Of these cells, both brain macrophages and brain memory CD4+ T cells harbor replication-competent SIV DNA; however, only brain CD4+ T cells harbored SIV DNA in animals without SIVE. These findings support use of CL757 as an important model to investigate disease progression in the CNS and as a model to study virus reservoirs in the CNS.

The findings from this study will facilitate the process of identifying the correct category of drug ingested by focusing on critical signs and symptoms of drug influence. This work will have direct and immediate relevance to the training of drug recognition experts (DREs) by providing the foundation for an innovative, statistically based approach to drug classification decisions by DREs.

The objective of this paper is to illustrate the accuracy with which police officers trained as Drug Recognition Experts (DREs) can identify the category of drug(s) ingested by persons suspected of being impaired as the result of drug use. The study examined 1,349 drug evaluations completed by DREs in Canada to determine the extent to which DRE opinions about the category of drug(s) used matched the results of toxicological analysis of fluid samples. The paper presents measures of sensitivity, specificity, the false alarm rate, and miss rate for all drug categories combined as well as for the most commonly found substances. The data demonstrate that the drug evaluations conducted by DREs in Canada are accurate. RÉSUMÉLe présent article met en évidence l'efficacité avec laquelle les policiers formés pour être des experts en reconnaissance de drogues (ERD) sont capables de déterminer quelle catégorie de drogues a consommées une personne suspectée de conduire avec les facultés affaiblies par la drogue. L'étude a examiné 1349 évaluations faites par des ERD au Canada pour établir le niveau de concordance entre les opinions ERD sur la catégorie de drogues et les résultats des analyses toxicologiques de fluides corporels. L'article présente les mesures de sensibilité, la spécificité, le taux de fausse alarme et le taux de dépistage manqué, et ce, pour toutes les catégories de drogues combinées et pour les substances les plus couramment détectées. Les données montrent que les évaluations faites par les ERD au Canada sont précises.

The IRP program combined immediate short-term roadside suspensions with vehicle impoundment and monetary penalties to enhance the swiftness, certainty, and perceived severity of sanctions for drinking and driving. The introduction of these measures was associated with a substantial reduction in the prevalence of driving with a BAC over 50 mg/dL and driving with a BAC over 80 mg/dL.

Genetic Counseling Graduate Programs (GCGPs) have progressively increased in number and class size, and implementation of the National Matching Services in 2018 was a major step toward streamlining the admissions process. Standardized applications (SAs), which have been incorporated into the admissions process for undergraduate studies as well as several professional graduate programs, could also be considered for GCGPs. In this study, we assessed the opinions of GCGP Program Directors (PDs) regarding the implementation of an SA for GCGP admissions processes. GCGP PDs participated in an anonymous online survey designed to evaluate interest in an SA and assess perceived implementation barriers. The survey collected GCGP and PD demographic information, data on current application components, and PD opinions of an SA. Thirty PDs were included in this study, and just over half (n = 16/30, 53.3%) reported their current application structure would allow for SA implementation. While 40% (n = 12/30) of respondents anticipated an SA would benefit GCGPs, an additional 23.3% (n = 7/30) anticipated no impact to GCGPs. Most respondents (n = 26/30, 86.6%) anticipated that an SA would be beneficial for GCGP applicants. The main perceived benefit to GCGPs was an efficient application process, while perceived benefits to applicants included decreased redundancy and increased application access. Perceived harms to GCGPs included more generic applications, while perceived harms to applicants included increased competition for admission to individual GCGPs. The most common SA implementation barrier cited by respondents was current administrative structures. This study demonstrates that while GCGP leadership largely perceives an SA to be beneficial for applicants, opinions on impact to GCGPs vary. While the majority of respondents perceive implementation of an SA to be feasible, there are implementation barriers that must be addressed. Interestingly, GCGP leadership had mixed perceptions about the structure of a hypothetical SA, and thus overall impact, demonstrating the need for further study.