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Rayna B Hirst, Anna M Teague, Louise M Sodos, Robert E Wickham, L Taighlor Whittington, Brent M Mills, Mitch Earleywine
BACKGROUND: Few studies examining the cognitive effects of chronic cannabis use utilize research designs where examiners are blind to user status. Even in those that do, researchers may be able to guess the user status of participants, leaving these studies vulnerable to the expectancy effect confound. OBJECTIVES: The present study examined the ability of neuropsychologists (those who would conduct research on the cognitive effects of cannabis) to differentiate cannabis users and nonusers based on physical appearance from photographs...
October 25, 2016: Substance Use & Misuse
Annelies Cannaert, Jolien Storme, Florian Franz, Volker Auwärter, Christophe P Stove
Synthetic cannabinoids (SCs) are the largest group of compounds currently monitored in Europe by the EU Early Warning System on new psychoactive substances. Emerging recreational use of these products has led to multiple cases of adverse health effects and even death. In contrast to marijuana, where Δ9-tetrahydrocannabinol (Δ9THC) is metabolized to only one major active metabolite, it has been reported that several major phase I metabolites of SCs remain biologically active, exerting cannabinoid (CB) receptor affinity, potency and efficacy greater than Δ9THC...
October 25, 2016: Analytical Chemistry
John Samaan, Gerardo F Ferrer, Boye Akinyemi, Patricia Junquera, Juan Oms, Rhaisa Dumenigo
Introduction. Marijuana has been used for its psychotropic effects including enhanced relaxation and perceptual alterations. However, the use of synthetic marijuana (SM) leads to more frequent and drastic side effects than the typical use of regular marijuana, owing to the fact that SM has a shorter duration and an earlier peak of action. Despite all the potential adverse health effects associated with SM use, current health policies on SM are very limited. It is believed that the popularity of SM has increased, due to its easy accessibility in the US and lack of detection in typical urine drug screens for THC...
2016: Case Reports in Psychiatry
Raminta Daniulaityte, Lu Chen, Francois R Lamy, Robert G Carlson, Krishnaprasad Thirunarayan, Amit Sheth
BACKGROUND: To harness the full potential of social media for epidemiological surveillance of drug abuse trends, the field needs a greater level of automation in processing and analyzing social media content. OBJECTIVES: The objective of the study is to describe the development of supervised machine-learning techniques for the eDrugTrends platform to automatically classify tweets by type/source of communication (personal, official/media, retail) and sentiment (positive, negative, neutral) expressed in cannabis- and synthetic cannabinoid-related tweets...
October 24, 2016: JMIR Public Health and Surveillance
David G Stewart, Erin C Siebert, Virginia K Arlt, Claudine Moise-Campbell, Elizabeth Lehinger
We aimed to examine the impact of a school-based Motivational Interviewing (MI) intervention, Project READY, on reducing adolescent substance use. We randomly assigned students (N = 244) to receive the intervention immediately (READY First) or to be in a waitlist control group (WLC). Those in WLC received the intervention once those in READY First had completed the intervention. Our hypotheses were: (1) adolescents in READY First would make greater initial reductions in their alcohol and marijuana use compared to adolescents assigned to WLC, (2) adolescents in READY First would make greater initial reductions in their alcohol and marijuana-related consequences compared to adolescents assigned to WLC, and (3) upon completing treatment, adolescents assigned to WLC would yield substance-related outcomes comparable to their peers in the READY First group...
December 2016: Journal of Substance Abuse Treatment
Namkee G Choi, Diana M DiNitto, C Nathan Marti
BACKGROUND: Given increasing numbers of older-adult marijuana users, this study examined the association of marijuana use and marijuana use disorder with life stressors and perceived social support in the 50+ age group. METHODS: Data came from the 2012-2013 National Epidemiologic Survey on Alcohol and Related Conditions (N=14,715 respondents aged 50+). Life stressors were measured with 12 items related to interpersonal, legal, and financial problems and being a crime victim...
October 18, 2016: Drug and Alcohol Dependence
Rubin Khoddam, Nicholas J Jackson, Adam M Leventhal
AIM: The complex interplay of externalizing and internalizing problems in substance use risk is not well understood. This study tested whether the relationship of conduct problems and several internalizing disorders with future substance use is redundant, incremental, or interactive in adolescents. METHODS: Two semiannual waves of data from the Happiness and Health Study were used, which included 3383 adolescents (M age=14.1years old; 53% females) in Los Angeles who were beginning high school at baseline...
October 17, 2016: Drug and Alcohol Dependence
Mary Beth Miller, Tim Janssen, Kristina M Jackson
PURPOSE: This study aimed to determine the unique utility of poor sleep health in predicting the onset of substance use in adolescents. METHODS: Middle school students (N = 829, mean (M)age = 12.6 years, 52% female, 73% white) who participated in an ongoing prospective study of alcohol onset and progression completed a set of Web-based health behavior surveys over a 4-year period, with recruitment beginning in 2009. Surveys included assessments of alcohol, cigarette, and marijuana use as well as sleep duration, bedtime delay (from weekdays to weekends), and daytime sleepiness...
October 18, 2016: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
John Stogner, Julia A Martinez, Bryan Lee Miller, Kenneth J Sher
BACKGROUND: Underage college students who obtain and use false identification (fake ID) are at risk for negative outcomes. However, it is currently unclear how uniquely the fake ID itself serves as a vehicle to subsequent harm (i.e., the "fake ID effect") over and above general and trait-related risk factors (e.g., deviant peers, low self-control). METHODS: To investigate whether the "fake ID effect" would hold after accounting for phenotypic risk, we utilized propensity score matching (PSM) in a cross-sectional sample of 1,454 students, and a longitudinal replication sample of 3,720 undergraduates...
October 21, 2016: Alcoholism, Clinical and Experimental Research
Helene R White, Jordan Beardslee, Dustin Pardini
OBJECTIVE: Although several studies have delineated risk factors for adolescent regular marijuana use, few studies have identified those factors that differentiate who will and will not eventually stop using marijuana during young adulthood. This study examined the extent to which adolescent risk factors, including individual attitudes, temperament, and behaviors and peer, family, and neighborhood factors, could prospectively identify which adolescence-onset monthly marijuana users (AMMU) would stop using marijuana in young adulthood and whether race moderated these associations...
October 10, 2016: Addictive Behaviors
Martie L Skinner, Kevin P Haggerty, Mary Casey-Goldstein, Ronald W Thompson, Laura Buddenberg, W Alex Mason
OBJECTIVES: The changes in Washington State and Colorado marijuana laws call for the development of new brief family-focused adolescent marijuana use preventive interventions that are relevant for and tailored to the context of legalization for retail sale. To that end, focus groups with parents and teens were conducted to find out about their concerns and needs in the context of legalization. METHODS: Six semi-structured focus groups (3 with parents, 3 with teens) were conducted in Washington State in 2013 related to consequences of teen marijuana use and messages that would be effective in helping to prevent teens from using marijuana in the context of legal adult use...
October 21, 2016: Substance Use & Misuse
Grace Kong, Bulat Idrisov, Artur Galimov, Radik Masagutov, Steve Sussman
BACKGROUND: Information on e-cigarettes among youth in the Russian Federation is lacking. OBJECTIVE: We examined prevalence of and factors associated with youth e-cigarette use in the Russian Federation. METHODS: A cross-sectional, anonymous survey, conducted among 716 (females 51.5%) high school students in three cities (i.e., Ufa, Sterlitamak, Karagaevo) within the Republic of Bashkortostan, Russian Federation in 2015, assessed e-cigarette use and its correlates (i...
October 21, 2016: Substance Use & Misuse
Sivakumar Sanjeev, Deepti Zutshi, Navid Seraji-Bozorgzad, Aashit Shah
Marijuana-based treatment for refractory epilepsy shows promise in surveys, case series and clinical trials. However, literature on their electroencephalography (EEG) effects is sparse. Our objective is to analyze the effect of marijuana on EEG in a 24-year-old patient with idiopathic generalized epilepsy (IGE) treated with cannabis. We blindly reviewed three long-term EEGs-a 24-hour study while only on antiepileptic drugs (AEDs), a 72-hour EEG with Cannabis indica smoked on days one and three in addition to AEDs and a 48-hour EEG with combination C...
October 18, 2016: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
Luis Ig Ribeiro, Philip W Ind
As cannabis use increases, physicians need to be familiar with the effects of both cannabis and tobacco on the lungs. However, there have been very few long-term studies of cannabis smoking, mostly due to legality issues and the confounding effects of tobacco. It was previously thought that cannabis and tobacco had similar long-term effects as both cause chronic bronchitis. However, recent large studies have shown that, instead of reducing forced expiratory volume in 1 s and forced vital capacity (FVC), marijuana smoking is associated with increased FVC...
October 20, 2016: NPJ Primary Care Respiratory Medicine
Shaniece Criss, Dahiana Rodriguez, Roberta E Goldman
Our qualitative study examined how stresses of daily life affected substance use and perceived risk among Black and Hispanic adolescents. We conducted 11 focus groups with students aged 13-25 in public and alternative schools in Providence, Rhode Island, using Bourdieu's Social Practice theoretical approach to guide questioning and data analysis. Despite participants' frequent marijuana use, they perceived the emphasis society places on substance use as misguided, obfuscating the persistence of more critical problems such as stress and reduced opportunity resulting from neighborhood violence, poor schools, financial difficulties, and home troubles...
2016: Journal of Health Care for the Poor and Underserved
Denise D Walker, Robert S Stephens, Claire E Blevins, Kelsey E Banes, Lauren Matthews, Roger A Roffman
OBJECTIVE: Brief interventions for adolescent marijuana users offered in schools reach users who would not otherwise present for treatment. The current study builds on previous trials of a school-based, 2-session motivational enhancement therapy (MET) intervention by adding periodic, brief motivational check-ins to reinforce gains and bolster motivation. METHOD: Adolescent participants were randomly assigned to a motivational check-in (MCI; n = 128) or assessment-only check-in (ACI; n = 124) comparison condition...
November 2016: Journal of Consulting and Clinical Psychology
Susan E Luczak, Rubin Khoddam, Sheila Yu, Tamara L Wall, Anna Schwartz, Steve Sussman
BACKGROUND AND OBJECTIVES: We conducted a review of the prevalence and co-occurrence of 12 types of addictions in US ethnic/racial groups and discuss the implications of the results for genetic research on addictions. METHODS: We utilized MEDLINE and PsycINFO databases to review the literature on alcohol, tobacco, marijuana, illicit drugs, gambling, eating/food, internet, sex, love, exercise, work, and shopping. We present results for each addiction based on total US prevalence, prevalence within ethnic groups, and co-occurrence of addictions among ethnic groups when available...
October 19, 2016: American Journal on Addictions
Jeremy T Goldbach, Ethan H Mereish, Claire Burgess
BACKGROUND: Prescription drug, e-cigarette, smokeless tobacco, and synthetic marijuana use has risen dramatically in the United States over the past decade. OBJECTIVES: This paper investigates the use of risky substances among adolescents, and examines disparities between sexual minority (i.e., mostly heterosexual and lesbian, gay, bisexual; LGB) and heterosexual adolescents in use of novel and emerging substances. Given the public health risk and the imminence of these substances in the media, emerging drug use was examined in a county wide sample of adolescents in a Southern state...
October 19, 2016: Substance Use & Misuse
Sanjay Bhandari, Thangam Venkatesan
Cyclic vomiting syndrome (CVS) is a chronic functional gastrointestinal disorder that is characterized by episodic nausea and vomiting. Initially thought to only affect children, CVS in adults was often misdiagnosed with significant delays in therapy. Over the last decade, there has been a considerable increase in recognition of CVS in adults but there continues to be a lack of knowledge about management of this disorder. This paper seeks to provide best practices in the treatment of CVS and also highlight some novel therapies that have the potential in better treating this disorder in the future...
October 18, 2016: Current Treatment Options in Gastroenterology
Gordon D Ko, Sara L Bober, Sean Mindra, Jason M Moreau
Cannabis has been widely used as a medicinal agent in Eastern medicine with earliest evidence in ancient Chinese practice dating back to 2700 BC. Over time, the use of medical cannabis has been increasingly adopted by Western medicine and is thus a rapidly emerging field that all pain physicians need to be aware of. Several randomized controlled trials have shown a significant and dose-dependent relationship between neuropathic pain relief and tetrahydrocannabinol - the principal psychoactive component of cannabis...
2016: Journal of Pain Research
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