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Cannabis studies

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https://www.readbyqxmd.com/read/29471387/heavy-cannabis-use-associated-with-reduction-in-activated-and-inflammatory-immune-cell-frequencies-in-antiretroviral-therapy-treated-human-immunodeficiency-virus-infected-individuals
#1
Jennifer A Manuzak, Toni M Gott, Jay S Kirkwood, Ernesto Coronado, Tiffany Hensley-McBain, Charlene Miller, Ryan K Cheu, Ann C Collier, Nicholas T Funderburg, Jeffery N Martin, Michael C Wu, Nina Isoherranen, Peter W Hunt, Nichole R Klatt
Background: Cannabis is a widely used drug in the United States, and the frequency of cannabis use in the human immunodeficiency virus (HIV)-infected population is disproportionately high. Previous human and macaque studies suggest that cannabis may have an impact on plasma viral load; however, the relationship between cannabis use and HIV-associated systemic inflammation and immune activation has not been well defined. Methods: The impact of cannabis use on peripheral immune cell frequency, activation, and function was assessed in 198 HIV-infected, antiretroviral-treated individuals by flow cytometry...
February 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29471226/examining-effects-of-medical-cannabis-narratives-on-beliefs-attitudes-and-intentions-related-to-recreational-cannabis-a-web-based-randomized-experiment
#2
Sharon R Sznitman, Nehama Lewis
BACKGROUND: This experimental study tests effects of exposure to video narratives about successful symptom relief with Medical Cannabis (MC) on attitudes, beliefs, and intentions related to recreational cannabis use. METHODS: Patient video testimonials were modeled after those found in extant media coverage. Israeli participants (N = 396) recruited through an online survey company were randomly assigned to view a narrative or a non-narrative video containing equivalent information about MC...
January 31, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29471225/location-location-location-assessing-the-spatial-patterning-between-marijuana-licenses-alcohol-outlets-and-neighborhood-characteristics-within-washington-state
#3
Loni Philip Tabb, Christina Fillmore, Steven Melly
BACKGROUND: The availability of marijuana products is becoming increasingly prevalent across the United States (US), many states are allowing for the production, processing, and retailing of these products for medical and/or recreational use. The purpose of this study is to: (1) examine the spatial patterning of marijuana licenses, and (2) examine the impact of alcohol outlets in addition to other neighborhood characteristics on marijuana licenses within the state of Washington. METHODS: This cross-sectional observational study examined 1458 census tracts in Washington state from 2017, using marijuana and alcohol data from the Washington State Liquor and Cannabis Board as well as neighborhood characteristics data from the American Community Survey 2011-2015 5-year estimates...
February 13, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29470605/considering-the-context-social-factors-in-responses-to-drugs-in-humans
#4
REVIEW
Harriet de Wit, Michael Sayette
BACKGROUND: Drugs are typically used in social settings. Here, we consider two factors that may contribute to this observation: (i) the presence of other people may enhance the positive mood effects of a drug, and conversely, (ii) drugs may enhance the value of social stimuli. METHODS: We review evidence from controlled laboratory studies with human volunteers, which investigated either of these interactions between social factors and responses to drugs. We examine the bidirectional effects of social stimuli and single doses of alcohol, stimulants, opioids, and cannabis...
February 22, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29469245/antipsychotic-prescriptions-among-adults-with-major-depressive-disorder-in-office-based-outpatient-settings-national-trends-from-2006-to-2015
#5
Taeho Greg Rhee, Somaia Mohamed, Robert A Rosenheck
OBJECTIVE: A recent moderately long-term study found an antipsychotic to be more effective than an antidepressant as the next-step treatment of unresponsive major depressive disorder (MDD). It is thus timely to examine recent trends in the pharmacoepidemiology of antipsychotic treatment of MDD. METHODS: Data from the 2006-2015 National Ambulatory Medical Care Survey, nationally representative samples of office-based outpatient visits in adults with MDD (ICD-9-CM codes 296...
February 13, 2018: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/29467073/the-consumption-of-new-psychoactive-substances-and-methamphetamine
#6
Elena Gomes de Matos, Tessa-Virginia Hannemann, Josefine Atzendorf, Ludwig Kraus, Daniela Piontek
BACKGROUND: The abuse of new psychoactive substances (NPS) and methamphetamine has severe adverse effects. Here we provide the first report of regional patterns in NPS and methamphetamine consumption in Germany, on the basis of epidemiologic data from six federal states (Bavaria, Hamburg, Hesse, North Rhine-Westphalia, Saxony, and Thuringia). METHODS: Data were derived from the 2015 Epidemiological Survey of Substance Abuse (Epidemiologischer Suchtsurvey) and supplemented with additional cases from the federal states that were studied...
January 26, 2018: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29466945/diversity-and-evolution-of-the-repetitive-genomic-content-in-cannabis-sativa
#7
Rahul Pisupati, Daniela Vergara, Nolan C Kane
BACKGROUND: The repetitive content of the genome, once considered to be "junk DNA", is in fact an essential component of genomic architecture and evolution. In this study, we used the genomes of three varieties of Cannabis sativa, three varieties of Humulus lupulus and one genotype of Morus notabilis to explore their repetitive content using a graph-based clustering method, designed to explore and compare repeat content in genomes that have not been fully assembled. RESULTS: The repetitive content in the C...
February 21, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29466093/efficacy-of-a-web-based-tailored-intervention-to-reduce-cannabis-use-among-young-people-attending-adult-education-centers-in-quebec
#8
José Côté, Sébastien Tessier, Hélène Gagnon, Nicole April, Geneviève Rouleau, Miguel Chagnon
BACKGROUND: Cannabis use is common among young adults. Web-based interventions are an increasingly popular way to reach this population. The aim of this study was to evaluate the efficacy of a Web-based tailored intervention, developed on theoretical and empirical grounds, to reduce cannabis use among young people by promoting a more positive intention to abstain. METHODS: An experimental design was employed to evaluate the efficacy of the intervention in reducing cannabis use (primary outcome) by bolstering intention (secondary outcome) to abstain from use...
February 21, 2018: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/29463913/impact-of-co-administration-of-oxycodone-and-smoked-cannabis-on-analgesia-and-abuse-liability
#9
Ziva D Cooper, Gillinder Bedi, Divya Ramesh, Rebecca Balter, Sandra D Comer, Margaret Haney
Cannabinoids combined with opioids produce synergistic antinociceptive effects, decreasing the lowest effective antinociceptive opioid dose (i.e., opioid-sparing effects) in laboratory animals. Although pain patients report greater analgesia when cannabis is used with opioids, no placebo-controlled studies have assessed the direct effects of opioids combined with cannabis in humans or the impact of the combination on abuse liability. This double-blind, placebo-controlled, within-subject study determined if cannabis enhances the analgesic effects of low dose oxycodone using a validated experimental model of pain and its effects on abuse liability...
February 5, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29461932/clinical-outcomes-from-a-10-week-follow-up-psychoeducational-programme-for-dual-diagnosis
#10
J Chilton, D Crone, P J Tyson
BACKGROUND: Dual diagnosis covers a broad spectrum of mental health and substance misuse conditions occurring concurrently (NICE, 2016). Its manifestation is complex and as such, the disorder is recognized as influencing adherence to prescribed medication, service engagement and has a worse prognosis than substance use and mental health conditions occurring independently. AIMS: To determine the effectiveness of psycho-educational group therapy on a sample of dual diagnosis patients...
February 20, 2018: Journal of Dual Diagnosis
https://www.readbyqxmd.com/read/29461346/medical-cannabis-for-the-treatment-of-fibromyalgia
#11
George Habib, Suheil Artul
BACKGROUND: Fibromyalgia is a chronic pain syndrome, characterized by chronic musculoskeletal pain, fatigue, and mood disturbances. There are nearly no data on the effect of medical cannabis (MC) treatment on patients with fibromyalgia. METHODS: Data were obtained from the registries of 2 hospitals in Israel (Laniado Hospital and Nazareth Hospital) on patients with a diagnosis of fibromyalgia who were treated with MC. After obtaining patient consent, demographic, clinical, and laboratory parameters were documented...
February 14, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29459327/changes-in-dependent-patients-with-schizophrenia-versus-non-psychiatric-controls-during-28-days-of-cannabis-abstinence
#12
Rachel A Rabin, Sarah S Dermody, Tony P George
BACKGROUND: Tobacco and cannabis are highly co-morbid in the general population and in patients with schizophrenia. Given the putative causal mechanisms facilitating co-use, it is important to determine how cannabis cessation may influence concurrent tobacco use. Using a 28-day cannabis abstinence paradigm, we prospectively examined changes in tobacco consumption in patients with schizophrenia and controls with cannabis dependence and daily cigarette use. METHODS: Cannabis dependent patients with schizophrenia (n = 19) and controls (n = 20) completed the study with abstinence rates of 42% and 55%, respectively...
February 12, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29459175/-alveolar-hemorrhage-and-cocaine-use
#13
REVIEW
M Underner, J Perriot, B Wallaert, G Peiffer, J-C Meurice, N Jaafari
In France, cocaine is the second most commonly illicit drug used after cannabis. Cocaine, mainly smoked in the form of crack, can be responsible for a wide range of respiratory disorders. The aim of this systematic literature review was to clarify what is known about the link between cocaine use and alveolar hemorrhage. We performed a Medline search covering the period 1980-2016 and collected data from 84 articles. The number of acute forms described in the literature is small but postmortem studies show that hidden forms are frequent...
February 16, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29457674/a-review-of-brain-stimulation-methods-to-treat-substance-use-disorders
#14
REVIEW
Alexandria S Coles, Karolina Kozak, Tony P George
BACKGROUND: Substance use disorders (SUDs) are a leading cause of disability worldwide. While several pharmacological and behavioral treatments for SUDs are available, these may not be effective for all patients. Recent studies using non-invasive neuromodulation techniques including Repetitive Transcranial Magnetic Stimulation (rTMS), Transcranial Direct Current Stimulation (tDCS), and Deep Brain Stimulation (DBS) have shown promise for SUD treatment. OBJECTIVE: Multiple studies were evaluated investigating the therapeutic potential of non-invasive brain stimulation techniques in treatment of SUDs...
February 19, 2018: American Journal on Addictions
https://www.readbyqxmd.com/read/29457671/abstinence-and-reduced-frequency-of-use-are-associated-with-improvements-in-quality-of-life-among-treatment-seekers-with-cannabis-use-disorder
#15
Christina A Brezing, C Jean Choi, Martina Pavlicova, Daniel Brooks, Amy L Mahony, John J Mariani, Frances R Levin
BACKGROUND AND OBJECTIVE: Many patients with cannabis use disorder (CUD) do not achieve or do not have abstinence as a goal of treatment, rather they reduce their use. Assessing outcome measures as they relate to functioning and reductions in cannabis use is an important area of study. Quality of life (QoL) shows promise as one such measure. Past studies have demonstrated gender differences in QoL and CUD. We aim to assess (1) the relationship between cannabis use and QoL and (2) gender effects in an outpatient medication treatment study for CUD...
February 19, 2018: American Journal on Addictions
https://www.readbyqxmd.com/read/29457219/smokin-hot-adolescent-smoking-and-the-risk-of-psychosis
#16
A Mustonen, T Ahokas, T Nordström, G K Murray, P Mäki, E Jääskeläinen, A Heiskala, J J Mcgrath, J G Scott, J Miettunen, S Niemelä
OBJECTIVE: Daily smoking has been associated with a greater risk of psychosis. However, we are still lacking studies to adjust for baseline psychotic experiences and other substance use. We examined associations between daily smoking and psychosis risk in a 15-year follow-up while accounting for these covariates in a prospective sample (N = 6081) from the Northern Finland Birth Cohort 1986. METHODS: Self-report questionnaires on psychotic experiences (PROD-screen), tobacco smoking and other substance use were completed when the cohort members were 15-16 years old...
February 18, 2018: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/29456355/role-of-yoga-in-management-of-substance-use-disorders-a-narrative-review
#17
REVIEW
Pooja Patnaik Kuppili, Arpit Parmar, Ankit Gupta, Yatan Pal Singh Balhara
Substance use disorders are comparable to chronic medical illnesses and have a chronic relapsing course. Despite being significant contributors to morbidity and mortality, limited treatment options exist. The current narrative review was aimed at providing an overview of yoga therapy in substance-use disorders and discuss the relevant methodological issues. Articles published in English language till May 2017 indexed with PubMed, PubMed central, and Google Scholar were searched using search terms "Yoga," "Substance use," "Drug dependence," "Nicotine," "Tobacco," "Alcohol," "Opioids," "Cannabis," "Cocaine," "Stimulants," "Sedative hypnotics," "Inhalants," and "Hallucinogens" for inclusion in the review...
January 2018: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/29456273/the-effects-of-acute-cannabis-use-on-nontraffic-injury-risk-reviewing-the-available-literature-and-identifying-ways-forward
#18
Gabriel Andreuccetti, Yu Ye, Jaewook Kang, Rachael Korcha, Jane A Witbrodt, Heraclito B Carvalho, Cheryl J Cherpitel
Recent evidence has indicated that cannabis use before driving is associated with a modest but increased risk for traffic-related injuries. However, the question of whether recent cannabis use is associated with a greater risk for other types of injuries remains unanswered. Aiming to understand better how acute cannabis use might affect the risk for all causes of injury, we have summarized the limited data available in the literature on the risk of non-traffic injuries associated with recent cannabis use. Very few studies were able to provide estimate risks for all injuries or injuries other than those related to road traffic injuries, with the limited evidence available showing mixed findings...
June 2017: Contemporary Drug Problems
https://www.readbyqxmd.com/read/29455452/cannabinoids-in-arterial-pulmonary-and-portal-hypertension-mechanisms-of-action-and-potential-therapeutic-significance
#19
REVIEW
Barbara Malinowska, Marek Toczek, Anna Pędzińska-Betiuk, Eberhard Schlicker
The endocannabinoid system is overactivated in arterial, pulmonary and portal hypertension. In this paper, we present limited clinical data concerning the role of cannabinoids in human hypertension including polymorphism of endocannabinoid system components. We underline differences between the acute cannabinoid administration and their potential hypotensive effect after chronic application in experimental hypertension. We discuss pleiotropic effects of cannabinoids on the cardiovascular system mediated via numerous neuronal and non-neuronal mechanisms both in normo- and in hypertension...
February 18, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29454037/melatonin-attenuates-%C3%AE-9-tetrahydrocannabinol-induced-reduction-in-rat-sperm-motility-and-kinematics-in-vitro
#20
Isiaka Abdullateef Alagbonsi, Luqman Aribidesi Olayaki
The use of Cannabis sativa (CS) has been widely demonstrated to have detrimental effect on male reproductive functions. Despite the well-known existence of endocannabinoid and melatonergic systems in semen, the physiological significance of their interaction is not understood. We recently showed that melatonin exacerbates the CS-induced gonadotoxicity in-vivo. To overcome the limitations associated with our in-vivo studies and further understand the role of cannabinoid-melatonin relationship in sperm functions, this study investigated the in-vitro effect of tetrahydrocannabinol (THC) and/or melatonin on motility and kinematics of capacitating rat sperms...
February 14, 2018: Reproductive Toxicology
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