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https://www.readbyqxmd.com/read/28718398/comparative-study-of-nmr-spectral-profiling-for-the-characterization-and-authentication-of-cannabis
#1
Xinyi Wang, Peter de Harrington, Steven Baugh
For the authentication of botanical materials, it is difficult to obtain representative reference materials because botanicals vary significantly with respect to cultivation conditions. Chemical profiling of plant extracts or spectral fingerprinting can differentiate botanicals and group them by their chemical profiles. NMR spectroscopy yields a powerful and useful method for profiling plant extracts. Both 500 MHz (1)H and (1)H-(1)H correlation NMR spectroscopy coupled with pattern recognition were used to discriminate among Cannabis samples...
July 18, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28717382/neurological-soft-signs-in-tunisian-patients-with-first-episode-psychosis-and-relation-with-cannabis-use
#2
Ahmed Mhalla, Bochra Ben Mohamed, Christoph U Correll, Badii Amamou, Anouar Mechri, Lotfi Gaha
BACKGROUND: Neurological soft signs (NSS) are minor non-localizing neurological abnormalities that are conceptualized as neurodevelopmental markers that mediate the biological risk for psychosis. We aimed to explore the relationship between NSS and cannabis use, an environmental risk factor of psychosis. METHODS: This was a cross-sectional study in consecutively admitted patients hospitalized for first-episode psychosis. NSS were assessed by the NSS scale (23 items exploring motor coordination, motor integrative function, sensory integration, involuntary movements or posture, quality of lateralization)...
2017: Annals of General Psychiatry
https://www.readbyqxmd.com/read/28715729/consistent-association-between-hypnotics-sedatives-and-non-traffic-injuries-results-from-a-national-household-survey
#3
María Del Mar Martín-Rodríguez, José Pulido, Eladio Jiménez-Mejías, Juan Hoyos, Pablo Lardelli-Claret, Gregorio Barrio
AIM: To quantify the relationship between patterns of psychostimulants, hypnotics/sedatives and alcohol consumption and the frequency of unintentional non-traffic injuries (UNTIs) requiring medical assistant in Spain. METHODS: We carried out a cross sectional study using a randomized pooled sample from two household surveys on psychoactive drugs use (n=51,649 subjects aged 15-64 years). We estimated the magnitude of the association between the use of psychostimulants and hypnotics/sedatives in the last 12 months as well as alcohol consumption in the last 30days with the occurrence of UNTIs in the last 12 months (falls, knocks/bumps and cuts) by building several logistic regression models, which took into account the effect of sociodemographic characteristics and the use of other psychoactive drugs (including cannabis)...
July 14, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28711812/bullying-involvement-and-adolescent-substance-use-a-multilevel-investigation-of-individual-and-neighbourhood-risk-factors
#4
Laura J Lambe, Wendy M Craig
BACKGROUND: Youth involved with school bullying are vulnerable to many negative outcomes, including substance use. Research has yet to examine how this vulnerability operates in the context of other individual and neighbourhood differences. The current study aimed to fill this gap by using multilevel modeling to investigate both the individual and neighbourhood risk factors associated with frequent drunkenness and frequent cannabis use among adolescents. METHODS: Data from the 2010 Canadian Health Behaviours in School-Aged Children (HBSC) survey were analyzed...
June 29, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28705601/cannabis-use-attitudes-and-legal-status-in-the-u-s-a-review
#5
REVIEW
Hannah Carliner, Qiana L Brown, Aaron L Sarvet, Deborah S Hasin
Cannabis is widely used among adolescents and adults. In the U.S., marijuana laws have been changing, and Americans increasingly favor legalizing cannabis for medical and recreational uses. While some can use cannabis without harm, others experience adverse consequences. The objective of this review is to summarize information on the legal status of cannabis, perceptions regarding cannabis, prevalence and time trends in use and related adverse consequences, and evidence on the relationship of state medical (MML) and recreational (RML) marijuana laws to use and attitudes...
July 10, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28705600/poor-medication-adherence-and-risk-of-relapse-associated-with-continued-cannabis-use-in-patients-with-first-episode-psychosis-a-prospective-analysis
#6
Tabea Schoeler, Natalia Petros, Marta Di Forti, Ewa Klamerus, Enrico Foglia, Robin Murray, Sagnik Bhattacharyya
BACKGROUND: Cannabis use following the onset of first-episode psychosis has been linked to both increased risk of relapse and non-adherence with antipsychotic medication. Whether poor outcome associated with cannabis use is mediated through an adverse effect of cannabis on medication adherence is unclear. METHODS: In a prospective analysis of data acquired from four different adult inpatient and outpatient units of the South London and Maudsley Mental Health National Health Service Foundation Trust in London, UK, 245 patients were followed up for 2 years from the onset of first-episode psychosis...
July 10, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28704769/characterizing-marijuana-concentrate-users-a-web-based-survey
#7
Raminta Daniulaityte, Francois R Lamy, Monica Barratt, Ramzi W Nahhas, Silvia S Martins, Edward W Boyer, Amit Sheth, Robert G Carlson
AIMS: The study seeks to characterize marijuana concentrate users, describe reasons and patterns of use, perceived risk, and identify predictors of daily/near daily use. METHODS: An anonymous web-based survey was conducted (April-June 2016) with 673 US-based cannabis users recruited via the Bluelight.org web-forum and included questions about marijuana concentrate use, other drugs, and socio-demographics. Multivariable logistic regression analyses were conducted to identify characteristics associated with greater odds of lifetime and daily use of marijuana concentrates...
June 29, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28704167/-i-feel-like-i-ve-hit-the-bottom-and-have-no-idea-what-to-do-supportive-social-networking-on-reddit-for-individuals-with-a-desire-to-quit-cannabis-use
#8
Shaina J Sowles, Melissa J Krauss, Lewam Gebremedhn, Patricia A Cavazos-Rehg
BACKGROUND: Online communities can provide social support to those in need and can foster personal empowerment for individuals experiencing distress. This study examines the content of a Reddit community dedicated to the support of people trying to quit using cannabis, in order to develop an understanding of the type of social networking occurring on this subreddit (e.g. community). METHODS: A total of 100 Reddit posts and their replies (i.e. comments) were collected from the subreddit on June 12, 2015...
July 13, 2017: Substance Abuse
https://www.readbyqxmd.com/read/28701974/substance-use-among-adolescents-involved-in-bullying-a-cross-sectional-multilevel-study
#9
Jorge Gaete, Bernardita Tornero, Daniela Valenzuela, Cristian A Rojas-Barahona, Christina Salmivalli, Eduardo Valenzuela, Ricardo Araya
Being involved in bullying as a victim or perpetrator could have deleterious health consequences. Even though there is some evidence that bullies and victims of bullying have a higher risk for drug use, less is known about bystanders. The aim of this research was to study the association between bullying experience (as victims, bullies, or bystanders) and substance use. We gathered complete information from a nationally representative sample of 36,687 students (51.4% female) attending 756 schools in Chile. We used a self-reported questionnaire which was developed based on similar instruments used elsewhere...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28700366/sex-differences-in-cannabis-use-disorder-diagnosis-involved-hospitalizations-in-the-united-states
#10
He Zhu, Li-Tzy Wu
OBJECTIVES: The study examined sex differences in trend and clinical characteristics of cannabis use disorder (CUD) diagnosis involved hospitalizations among adult patients. METHODS: We analyzed hospitalization data from the 2007-2011 Nationwide Inpatient Samples for patients aged 18-64 years (N = 15,114,930). Descriptive statistics were used to characterize demographic variables and to compare the proportions of CUD diagnosis and comorbid patterns between male and female hospitalizations...
July 11, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28700290/lower-risk-cannabis-use-guidelines-a-comprehensive-update-of-evidence-and-recommendations
#11
Benedikt Fischer, Cayley Russell, Pamela Sabioni, Wim van den Brink, Bernard Le Foll, Wayne Hall, Jürgen Rehm, Robin Room
BACKGROUND: Cannabis use is common in North America, especially among young people, and is associated with a risk of various acute and chronic adverse health outcomes. Cannabis control regimes are evolving, for example toward a national legalization policy in Canada, with the aim to improve public health, and thus require evidence-based interventions. As cannabis-related health outcomes may be influenced by behaviors that are modifiable by the user, evidence-based Lower-Risk Cannabis Use Guidelines (LRCUG)-akin to similar guidelines in other health fields-offer a valuable, targeted prevention tool to improve public health outcomes...
August 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28697856/demographic-and-clinical-correlates-of-substance-use-disorders-in-first-episode-psychosis
#12
Mary F Brunette, Kim T Mueser, Steven Babbin, Piper Meyer-Kalos, Robert Rosenheck, Christoph U Correll, Corrine Cather, Delbert G Robinson, Nina R Schooler, David L Penn, Jean Addington, Sue E Estroff, Jennifer Gottlieb, Shirley M Glynn, Patricia Marcy, James Robinson, John M Kane
BACKGROUND: We assessed the prevalence and correlates of lifetime substance use disorders in people with first episode psychosis using the baseline data from the Recovery After an Initial Schizophrenia Episode (RAISE) Early Treatment Program study. METHODS: Research staff assessed 404 first episode patients at 34 community mental health centers across the United States with the Structured Clinical Interview for DSM-IV for diagnoses of psychotic and substance use disorders...
July 8, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28695562/medical-use-of-cannabis-in-switzerland-analysis-of-approved-exceptional-licences
#13
Gablu Kilcher, Marcel Zwahlen, Christopher Ritter, Lukas Fenner, Matthias Egger
AIMS OF THE STUDY: In recent years, the Swiss Federal Office of Public Health (FOPH) granted exceptional licenses for the medical use of cannabinoids, typically for 6 months with possible extensions. A systematic review of cannabinoids for medical use commissioned by the FOPH supports the use of cannabinoids for the treatment of chronic pain and spasticity. However, little is known about the patients treated with cannabinoids. We aimed to study medical uses of cannabinoids as part of the FOPH's programme of exceptional licenses...
July 11, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/28695243/cns-metabolism-in-high-risk-drug-abuse-insights-gained-from-1-h-31-p-mrs-and-pet
#14
REVIEW
S Bodea
BACKGROUND: High-risk drug consumption is a matter of great concern for public health actors in industrialised countries. The latest trends show a market tendency towards diversification and increasing demand for high-purity synthetic drugs. While most consumers seek medical help after cannabis use, it is high-risk drugs like cocaine, heroin and amphetamines that account for most of the 1000 drug-related deaths that occur in Germany every year. PURPOSE: This article presents the most prominent in vivo cerebral metabolic information in cocaine, heroin and methamphetamine users provided by MRI spectroscopy and PET imaging...
July 10, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28694530/transcriptomic-profiling-of-hemp-bast-fibres-at-different-developmental-stages
#15
Gea Guerriero, Marc Behr, Sylvain Legay, Lauralie Mangeot-Peter, Simone Zorzan, Mohammad Ghoniem, Jean-Francois Hausman
Bast fibres are long extraxylary cells which mechanically support the phloem and they are divided into xylan- and gelatinous-type, depending on the composition of their secondary cell walls. The former, typical of jute/kenaf bast fibres, are characterized by the presence of xylan and a high degree of lignification, while the latter, found in tension wood, as well as flax, ramie and hemp bast fibres, have a high abundance of crystalline cellulose. During their differentiation, bast fibres undergo specific developmental stages: the cells initially elongate rapidly by intrusive growth, subsequently they cease elongation and start to thicken...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694184/engineering-yeasts-as-platform-organisms-for-cannabinoid-biosynthesis
#16
Bastian Zirpel, Friederike Degenhardt, Chantale Martin, Oliver Kayser, Felix Stehle
Δ(9)-tetrahydrocannabinolic acid (THCA) is a plant derived secondary natural product from the plant Cannabis sativa l. The discovery of the human endocannabinoid system in the late 1980s resulted in a growing number of known physiological functions of both synthetic and plant derived cannabinoids. Thus, manifold therapeutic indications of cannabinoids currently comprise a significant area of research. Here we reconstituted the final biosynthetic cannabinoid pathway in yeasts. The use of the soluble prenyltransferase NphB from Streptomyces sp...
July 7, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28693460/linkimputer-user-guided-genotype-calling-and-imputation-for-non-model-organisms
#17
Daniel Money, Zoë Migicovsky, Kyle Gardner, Sean Myles
BACKGROUND: Genomic studies such as genome-wide association and genomic selection require genome-wide genotype data. All existing technologies used to create these data result in missing genotypes, which are often then inferred using genotype imputation software. However, existing imputation methods most often make use only of genotypes that are successfully inferred after having passed a certain read depth threshold. Because of this, any read information for genotypes that did not pass the threshold, and were thus set to missing, is ignored...
July 10, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28686820/cannabis-use-and-cannabis-use-disorders-among-youth-in-the-united-states-2002-2014
#18
Beth Han, Wilson M Compton, Christopher M Jones, Carlos Blanco
OBJECTIVE: To examine trends in past-year cannabis use (CU) and cannabis use disorders (CUD) among youth in the United States, when related changes began, and factors associated with these changes. METHODS: This study used data from 288,300 persons aged 12-17 years who participated in the 2002-2014 National Survey on Drug Use and Health. Descriptive analyses and bivariable and multivariable logistic regressions were applied (using the year 2002 as the reference group for most analyses)...
July 5, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28686545/the-concurrent-validity-of-the-problem-oriented-screening-instrument-for-teenagers-posit-substance-use-abuse-subscale-in-adolescent-patients-in-an-urban-federally-qualified-health-center
#19
Sharon M Kelly, Kevin E O'Grady, Jan Gryczynski, Shannon Gwin Mitchell, Arethusa Kirk, Robert P Schwartz
BACKGROUND: The Problem Oriented Screening Instrument for Teenagers (POSIT)'s substance use/abuse subscale has been validated with high school students, adolescents with criminal justice involvement, and adolescent substance use treatment samples using the Diagnostic and Statistical Manual (DSM)-III-R and DSM-IV. This study examines the concurrent validity of the POSIT's standard 17-item substance use/abuse subscale and a revised, shorter 11-item version using DSM-5 Substance Use Disorder diagnoses...
July 7, 2017: Substance Abuse
https://www.readbyqxmd.com/read/28683783/polydrug-abuse-among-opioid-maintenance-treatment-patients-is-related-to-inadequate-dose-of-maintenance-treatment-medicine
#20
Pertti Kalevi Heikman, Leea Hellevi Muhonen, Ilkka Antero Ojanperä
BACKGROUND: Polydrug abuse is a known problem among opioid-dependent patients receiving opioid maintenance treatment (OMT). However, improved laboratory diagnostics is required to reveal polydrug abuse in its current scope. Furthermore, there are few studies focusing on the relationship between polydrug abuse and adequacy of the dose of OMT medicine. This study aimed to evaluate the polydrug abuse among opioid-dependent patients receiving OMT with inadequate (Group IA) and adequate (Group A) doses of OMT medicine as experienced by the patients...
July 6, 2017: BMC Psychiatry
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