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Poly drug users

Abigail Lyndon, Suzanne Audrey, Claudia Wells, Erica S Burnell, Suzanne Ingle, Rob Hill, Matthew Hickman, Graeme Henderson
AIM: To examine the risk to heroin users of also using gabapentin or pregabalin (gabapentoids). DESIGN: Multi-disciplinary study: we (a) examined trends in drug-related deaths and gabapentoid prescription data in England and Wales to test for evidence that any increase in deaths mentioning gabapentin or pregabalin is associated with trends in gabapentoid prescribing and is concomitant with opioid use; (b) interviewed people with a history of heroin use about their polydrug use involving gabapentin and pregabalin; and (c) studied the respiratory depressant effects of pregabalin in the absence and presence of morphine in mice to determine whether concomitant exposure increased the degree of respiratory depression observed...
May 10, 2017: Addiction
Manop Kanato, Poonrut Leyatikul
Various drug camps have been introduced in Thailand since the 2000s. This study explored the effects of drug camps in Thailand. Four provinces were selected to represent different region throughout Thailand. Assessments of 2679 drug users were carried out longitudinally, age ranging from 11 to 67 years old; assessments occurred before camp, after camps, and after a 1 year follow-up. Two hundred twenty-six camps organizers, community leaders, and lay people were selected as key informants. Twenty communities were observed prospectively and 400 lay people were studied...
April 25, 2017: Journal of Community Health
Elizabeth A Evans, Christine E Grella, Donna L Washington, Dawn M Upchurch
AIMS: To examine gender and racial/ethnic differences in the effect of substance use disorder (SUD) type on SUD persistence. METHODS: Data were provided by 1025 women and 1835 men from the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) to examine whether gender and race/ethnicity (Non-Hispanic White, Black, Hispanic) moderate the effects of DSM-IV defined past-12 month SUD type (alcohol, drug, poly-substance) on SUD persistence at 3-year follow-up, controlling for covariates...
March 7, 2017: Drug and Alcohol Dependence
Marie Claire Van Hout, Evelyn Hearne
BACKGROUND: The continual diversification of new psychoactive substances (NPS) circumventing legislation creates a public health and law enforcement challenge, and one particularly challenged by availability on Hidden Web cryptomarkets. METHODS: This is the first study of its kind which aimed to explore and characterise cryptomarket forum members' views and perspectives on NPS vendors and products within the context of Hidden Web community dynamics. An internal site search was conducted on two cryptomarkets popular with NPS vendors and hosting fora; Alphabay and Valhalla, using the search terms of 40 popular NPS in the seven categories of stimulant/cathinone; GABA activating; hallucinogen, dissociative, cannabinoid, opioid and other/unspecified/uncategorised NPS...
December 24, 2016: International Journal on Drug Policy
Felix Betzler, Leonard Viohl, Nina Romanczuk-Seiferth
Different cognitive impairments have been reported as a result of long-term MDMA/ecstasy use. Increased impulsivity and altered decision-making have been shown to be associated with the development and maintenance of addictive disorders pointing toward the necessity to understand a potential impairment of decision-making due to MDMA use. Thus, assessing the long-term effects of MDMA is crucial in order to evaluate its controversially discussed therapeutic use. The aim of this systematic review was to summarize the scientific literature on potential effects of chronic MDMA use on higher order decision-making processes in humans...
January 2017: European Journal of Neuroscience
Jessica Storbjörk, Joshua B B Garfield, Andrew Larner
BACKGROUND: Clinical studies of alcohol and drug treatment outcomes frequently apply participant eligibility criteria (EC), which may exclude real-world treatment seekers, impairing the representativeness of studied samples. Some research exists on the impact of EC on alcohol treatment seekers. Little is known about drug treatment and country differences. OBJECTIVES: We tested and compared the degree to which commonly used EC exclude real-world treatment seekers with problem alcohol and drug use in Sweden and Australia, and compared the impact of EC on outcomes...
March 21, 2017: Substance Use & Misuse
Lisa A Sawicki, April M Kloxin
Click chemistries have been investigated for use in numerous biomaterials applications, including drug delivery, tissue engineering, and cell culture. In particular, light-mediated click reactions, such as photoinitiated thiol-ene and thiol-yne reactions, afford spatiotemporal control over material properties and allow the design of systems with a high degree of user-directed property control. Fabrication and modification of hydrogel-based biomaterials using the precision afforded by light and the versatility offered by these thiol-X photoclick chemistries are of growing interest, particularly for the culture of cells within well-defined, biomimetic microenvironments...
September 29, 2016: Journal of Visualized Experiments: JoVE
Juliana Nichterwitz Scherer, Roberta Silvestrin, Felipe Ornell, Vinícius Roglio, Tanara Rosangela Vieira Sousa
BACKGROUND: Substance use disorders are associated with the increased risk of driving under the influence (DUI), but little is known about crack-cocaine and its relationship with road traffic crashes (RTC). METHOD: A multicenter sample of 765 crack-cocaine users was recruited in six Brazilian capitals in order to estimate the prevalence of DUI and RTC involvement. Legal, psychiatric, and drug-use aspects related with traffic safety were evaluated using the Addiction Severity Index - 6th version (ASI-6) and the Mini International Neuropsychiatric Interview...
October 1, 2016: Drug and Alcohol Dependence
Victoria Kostadinov, Ann Roche
OBJECTIVE: To examine the prevalence and predictors of cannabis use among older Australians and discuss implications for service provision. METHOD: Secondary analyses were conducted on the 2004 and 2013 National Drug Strategy Household Survey, a large and nationally representative data set. Frequency analyses explored the distribution of demographic characteristics and cannabis use. Logistic regression explored the predictors of cannabis use. RESULTS: Cannabis use among Australians aged 50 years and over increased significantly (P < 0...
October 12, 2016: Australasian Journal on Ageing
Kymberle Landrum Sterling, Craig S Fryer, Ian Pagano, Pebbles Fagan
INTRODUCTION: In 2016, the Food and Drug Administration announced that it would regulate little cigars and cigarillos (LCCs) and expressed concern about the concomitant use of combustible tobacco products. To understand LCC use among socially-disadvantaged cigarette smokers, we assessed (1) the prevalence of concomitant use of subtypes of LCCs: LCC-tobacco, LCC-blunt, and LCC- poly use, which includes use of both LCC-tobacco and LCC-blunt and (2) and its association with sociodemographic factors and substance use behaviors using race/ethnicity and gender stratified models...
December 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
Mohammad Muntasir Maruf, Muhammad Zillur Rahman Khan, Nasim Jahan
OBJECTIVES: Substance use disorders have become a major public health problem in Bangladesh. We sought to assess the pattern of substance use and related factors among hospitalized patients. METHODS: This was a descriptive study that included 105 patients. All patients who were admitted to a private drug de-addiction clinic in Dhaka, Bangladesh, between 1 July and 31 December 2013 and diagnosed with substance use disorder were enrolled in the study. Data was collected via face-to-face interviews using a semi-structured questionnaire and the information was complemented by the case-notes...
September 2016: Oman Medical Journal
Helle Ruff Laursen, Susanne Henningsson, Julian Macoveanu, Terry L Jernigan, Hartwig R Siebner, Klaus K Holst, Arnold Skimminge, Gitte M Knudsen, Thomas Z Ramsoy, David Erritzoe
The brain's serotonergic system plays a crucial role in the processing of emotional stimuli, and several studies have shown that a reduced serotonergic neurotransmission is associated with an increase in amygdala activity during emotional face processing. Prolonged recreational use of ecstasy (3,4-methylene-dioxymethamphetamine [MDMA]) induces alterations in serotonergic neurotransmission that are comparable to those observed in a depleted state. In this functional magnetic resonance imaging (fMRI) study, we investigated the responsiveness of the amygdala to emotional face stimuli in recreational ecstasy users as a model of long-term serotonin depletion...
December 2016: Journal of Psychopharmacology
Nadine Harker Burnhams, Ria Laubscher, Simon Howell, Mark Shaw, Jodilee Erasmus, Loraine Townsend
BACKGROUND: South Africa continues to witness an increase in illicit poly-substance use, although a precise measurement continues to be compounded by difficulties in accessing users. In a pilot attempt to use respondent-driven sampling (RDS)-a chain referral sampling method used to access populations of individuals who are 'hard-to-reach'-this article documents the feasibility of the method as recorded in a simultaneously run, multisite, poly-substance study in Cape Town. Here we aim to a) document the piloting of RDS among poly-substance users in the three socio-economic disparate communities targeted; b) briefly document the results; and c) review the utility of RDS as a research tool...
2016: Substance Abuse Treatment, Prevention, and Policy
Alexandra Machado, Cassilda Cunha-Reis, Francisca Araújo, Rute Nunes, Vítor Seabra, Domingos Ferreira, José das Neves, Bruno Sarmento
UNLABELLED: Topical pre-exposure prophylaxis (PrEP) with antiretroviral drugs holds promise in preventing vaginal transmission of HIV. However, significant biomedical and social issues found in multiple past clinical trials still need to be addressed in order to optimize protection and users' adherence. One approach may be the development of improved microbicide products. A novel delivery platform comprising drug-loaded nanoparticles (NPs) incorporated into a thin polymeric film base (NPs-in-film) was developed in order to allow the vaginal administration of the microbicide drug candidate tenofovir...
October 15, 2016: Acta Biomaterialia
Linda Richter, Brandie S Pugh, Philip H Smith, Samuel A Ball
BACKGROUND: The increasing popularity of non-cigarette nicotine products, especially among youth, highlights the need for greater attention to their potential risks, including nicotine addiction and other substance use and addiction. OBJECTIVES: To examine the extent to which nicotine product use co-occurs with other substance use and addiction among youth and adults, describe the demographic groups and types of nicotine products associated with an increased risk of such co-occurrence, and discuss implications for research, prevention, clinical practice, and policy...
March 2017: American Journal of Drug and Alcohol Abuse
Kh Todadze, S Mosia
Injecting drug user size estimation studies carried out in 2009, 2012 and 2015 revealed growing trends of drug abuse in Georgia:estimated number of people who inject drugs (PWID) have been increased from 40000 and 45000 to 50000. Since Soviet period the most popular injective narcotics have been opioids: home-made opium, heroine, buprenorphine and home-made desomorphine ("Krokodile") replacing each other on the black market. Self-made desomorphine typically contains big amounts of different toxic substances and causes significant somatic disorders, especially skin, bone, blood infections, liver and kidney failure; is highly addictive, associates with frequent injections that enhance injecting-related harm, including the risk of HIV transmission, in comparison with typical opioids...
May 2016: Georgian Medical News
Subin Park, Hokwang Song
Drug abuse has been widely linked to suicide risk. We examined the factors that affect adolescent drug users' suicide attempts in South Korea. This study analyzed the data of 311 adolescents who had used drugs such as inhalants, psychotropic drugs, and marijuana (195 males and 116 females). Among 311 subjects, 109 (35.0%) had attempted suicide during the last 12 months. After adjusting for other variables, depressive mood (OR=19.79) and poly-drug use (OR=2.79), and low/middle levels of academic achievement compared with a high level (OR=3...
May 2016: Psychiatry Investigation
E M Nehls, A M Rosales, K S Anseth
We present a versatile and facile method to enhance user-control of small molecule drug release from a poly(ethylene glycol)-based hydrogel using the host/guest complex formed between an azobenzene derivative guest and a β-cyclodextrin host. A model drug is formed from a short peptide containing a fluorophore and an azobenzene functional group on one terminus. Upon irradiation with UV light, azobenzene isomerization leads to decreased complex formation and an on-demand acceleratation of the release rate of an entrapped model drug...
2016: Journal of Materials Chemistry. B, Materials for Biology and Medicine
Lauren R Pacek, Maggie M Sweitzer, F Joseph McClernon
INTRODUCTION: Smoking is more prevalent among persons living with HIV (PLWH) than the general population. Little is known about the prevalence of non-cigarette tobacco and poly-tobacco use (PTU; using multiple tobacco products) among this population, which, in the general population is associated with poor health and cessation outcomes. We aimed to characterize the prevalence of cigarette and non-cigarette tobacco use, PTU, and correlates of tobacco use status among a nationally-representative sample of PLWH...
May 1, 2016: Drug and Alcohol Dependence
Omary Ubuguyu, Olivia C Tran, Robert Douglas Bruce, Frank Masao, Cassian Nyandindi, Norman Sabuni, Sheryl McCurdy, Jessie Mbwambo, Barrot H Lambdin
BACKGROUND: Injection of heroin has become widespread in Dar es Salaam, Tanzania and is spreading throughout the country. To prevent potential bridging of HIV epidemics, the Tanzanian government established a methadone maintenance treatment (MMT) clinic in February 2011. We assess the effect of MMT on health-related quality of life (HRQOL) and examine factors, particularly HIV infection and methadone dose, associated with changes in HRQOL. METHODS: This study utilized routine data on clients enrolling in methadone from February 2011 to April 2012 at Muhimbili National Hospital...
April 2016: International Journal on Drug Policy
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