Background: Previous studies have suggested that varenicline, an α4β2 nicotinic receptor partial agonist, and α7 nicotinic receptor full agonist, may be effective for the treatment of methamphetamine (MA) dependence due to dopaminergic effects, relief of glutamatergic and cognitive dysfunction, and activation of nicotinic cholinergic systems. This study aimed to determine if varenicline (1 mg BID) resulted in reduced methamphetamine use compared to placebo among treatment-seeking MA-dependent volunteers.
Methods: Treatment-seeking MA-dependent volunteers were randomized to varenicline 1 mg twice daily (n = 27) or placebo (n = 25) and cognitive behavioral therapy for 9 weeks.
Drug Alcohol Depend
September 2017
Background: Inattention is a deficit related to instilling abstinence from methamphetamine (MA) dependence. This study aimed to determine whether ibudilast (IB; 50mg bid) improves attentional abilities compared to placebo during early abstinence from MA dependence.
Methods: Attention was assessed in 11 MA-dependent non-treatment seeking participants in a phase IB safety-interaction trial.
Background: Methamphetamine dependence is a significant public health concern without any approved medications for treatment. We evaluated ibudilast, a nonselective phosphodiesterase inhibitor, to assess the safety and tolerability during intravenous methamphetamine administration. We conducted a randomized, double-blind, placebo-controlled, within-subjects crossover clinical trial.
View Article and Find Full Text PDFBackground: Despite numerous clinical trials no efficacious medications for methamphetamine (MA) have been identified. Neuroinflammation, which has a role in MA-related reward and neurodegeneration, is a novel MA pharmacotherapy target. Ibudilast inhibits activation of microglia and pro-inflammatory cytokines and has reduced MA self-administration in preclinical research.
View Article and Find Full Text PDFAbstract Among women, methamphetamine (meth) use has been associated with intimate partner violence (IPV); however, few studies have looked at the context of IPV. This qualitative pilot study explored the experiences of meth-using women in Los Angeles County regarding: (1) IPV in their most recent primary relationship; (2) use of contraception and reproductive health services; and (3) meth use during pregnancy. Participants (n=30) were recruited through community advertising and at three addiction treatment centers to participate in 15-20 minute, semi-structured interviews recorded with handwritten transcripts.
View Article and Find Full Text PDFAims: Two previous randomized trials found an effect for bupropion in reducing methamphetamine use in the subgroup with lower frequency of methamphetamine use at baseline. This study aimed to replicate these results by comparing bupropion versus placebo in methamphetamine-dependent participants with less than daily methamphetamine use at baseline.
Methods: Methamphetamine-dependent volunteers reporting methamphetamine use on ≤29 of past 30 days were randomized to bupropion 150 mg twice daily (n = 41) or placebo (n = 43) and out-patient counseling for 12 weeks.
In 2008-2009, we conducted a 6-week, open-label trial of transdermal nicotine replacement therapy and practical counseling for 34 adolescents seeking smoking cessation in Los Angeles. Dependent outcomes were study retention, use of the patch, and 7-day quit status at the end-of-study and at follow-up visits. Predictors of outcomes included cigarette dependence, withdrawal symptoms, demographic and psychiatric measures, and other substance use.
View Article and Find Full Text PDFTreatment responses of placebo groups in addiction medicine trials have important implications for research methodology and clinical practice, however studies examining placebo group responses in addiction medicine are scarce. Extant data suggest the importance of early treatment responsiveness for long-term outcomes. Among methamphetamine-(MA) dependent individuals randomized to placebo pill plus behavioral support conditions in pharmacotherapy development trials, we hypothesized that immediate abstinence would be a necessary but insufficient predictor for end-of-trial (EOT) abstinence.
View Article and Find Full Text PDFBackground: Two clinical trials have shown efficacy for bupropion in treating methamphetamine (MA) dependence among those with moderate baseline MA use. However, treatment response is highly variable and it is unclear what duration of treatment is necessary to determine if maintaining the treatment course is indicated or if discontinuation or augmentation is appropriate. The present study assessed the relationship among early bupropion treatment response for moderate MA users and end-of-treatment (EOT) abstinence.
View Article and Find Full Text PDFIntroduction And Aims: Cigarette smoking occurs frequently among individuals with methamphetamine (MA) dependence. Preclinical and clinical evidence has suggested that the common co-abuse of MA and cigarettes represents a pharmacologically meaningful pattern.
Methods: The present study is a secondary analysis of a randomised, placebo-controlled trial of bupropion treatment for MA dependence (bupropion n = 36; placebo n = 37).
Objective: To compare modafinil to placebo for reducing methamphetamine (MA) use, improving retention, and reducing depressive symptoms and MA cravings. Rates of adverse events and cigarette smoking with modafinil versus placebo were also compared.
Methods: Following a 2-week, non-medication lead-in period, 71 treatment-seeking MA-dependent participants were randomly assigned to modafinil (400mg once daily; N=34) or placebo (once daily; N=37) for 12 weeks under double-blind conditions.
Despite the worldwide extent of methamphetamine dependence, no medication has been shown to effectively treat afflicted individuals. One relatively unexplored approach is modulation of cholinergic system function. Animal research suggests that enhancement of central cholinergic activity, possibly at nicotinic acetylcholine receptors (nAChRs), can reduce methamphetamine-related behaviors.
View Article and Find Full Text PDFThis paper examines the performance of 13 mobile testing units (MTUs) and rapid HIV testing technology in Los Angeles County as reflected in the relationship between the cognitive strategies used by MTU staff regarding instructions to clients about picking up their test results and returning for test results, and following up with those clients who did not return, and the spatial distribution of MTUs and AIDS rates in 2003. Maps were created using geographic information systems (GIS) data on 93 MTU testing locations and 2003 AIDS cases data. MTU staff (N = 45) were interviewed and several themes were identified.
View Article and Find Full Text PDFBackground: In the U.S., HIV infections are increasing among men who have sex with men (MSM), particularly young, racial/ethnic minority MSM.
View Article and Find Full Text PDFAlthough some individuals who abuse methamphetamine have considerable cognitive deficits, no prior studies have examined whether neurocognitive functioning is associated with outcome of treatment for methamphetamine dependence. In an outpatient clinical trial of bupropion combined with cognitive behavioral therapy and contingency management (Shoptaw, S., Heinzerling, K.
View Article and Find Full Text PDFThis study examines organizational, provider, client, and test-event level predictors of HIV partner notification (PN) discussion and agreements based on providers' most recent HIV-positive post-test counseling session. Staff (n = 621) were sampled from for-profit, nonprofit, and county government HIV testing organizations (N = 159) in Los Angeles County from 2003 to 2007. Among providers who conducted an HIV-positive post-test counseling session (n = 204), 65% discussed PN but only 10% had confirmed agreement to provider-involved PN (PIPN).
View Article and Find Full Text PDFObjective: To compare bupropion to placebo for reducing methamphetamine (MA) use, increasing retention, and reducing the severity of depressive symptoms and MA-cravings. A secondary objective compared bupropion to placebo for reducing cigarette smoking among MA dependent participants.
Methods: Following a 2-week, non-medication baseline screening period, 73 treatment-seeking MA dependent participants were randomly assigned to bupropion sustained release (150 mg twice daily; N=36) or placebo (twice daily; N=37) for 12-weeks under double-blind conditions.
In this study, the authors explored HIV test counselors' perceptions of and experiences working with "difficult" and "good" clients in alternative HIV testing sites. Trained interviewers made field observations and conducted sixteen 60-minute, semistructured interviews with counselors. Counselors reported 7 main characteristics of difficult clients: (1) uncooperative, (2) mean, (3) inebriated, (4) threatening, (5) "crazy," (6) sexually inappropriate, and (7) aesthetically unappealing/overly appealing.
View Article and Find Full Text PDFAIDS Patient Care STDS
September 2007
Rapid HIV antibody testing is a new technology whose implementation promises to facilitate the early detection of persons with HIV/AIDS. The goal of this study was to review and summarize the literature from 2000-2006 regarding four outcomes of rapid (including both blood and oral fluid) HIV testing: rates of client acceptance; rates of clients' receiving their test results; rates of entry into medical care for those found to be HIV positive; and the efficacy of prevention counseling after testing. A total of 116 studies in peer-reviewed journals were screened.
View Article and Find Full Text PDFJ Int Assoc Physicians AIDS Care (Chic)
March 2007
Background: Individuals at elevated risk of contracting HIV frequently fail to return for their test result. Because rapid HIV antibody testing is still not widely implemented, failure to return for test results under conditions of standard testing remains a problem.
Methods: Direct field observation and semistructured interviews with clients (N = 16) and test counselors (N = 16) of 3 community HIV testing sites were conducted.
This study examined HIV test counselors' beliefs and practices regarding communicating indeterminate HIV test results to clients. There are many reasons for an indeterminate HIV antibody/ Western blot assay including early HIV infection, infection with other contagious diseases, autoimmune diseases, and second or subsequent pregnancies in women. Field observations of three community HIV testing sites and semistructured interviews with 16 HIV test counselors were conducted from August 2002 through June 2003.
View Article and Find Full Text PDFBackground: Early detection of HIV is increasingly important in light of advances in HIV research and treatment. Although treatment advances offer the potential to curtail HIV incidence and seroprevalence, the full benefits remain unrealised because many infected individuals remain unaware of their serostatus. An intensive observational study of HIV testing and counselling was undertaken in a large health maintenance organisation's urgent-care clinic (UCC) for non-threatening illnesses and non-traumatic injuries in order to better understand the HIV testing process in a medical setting.
View Article and Find Full Text PDF