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1.
J Child Adolesc Subst Abuse ; 26(3): 205-218, 2017.
Article in English | MEDLINE | ID: mdl-28845096

ABSTRACT

HIV/sexually transmitted infection (STI) risk-reduction interventions are needed to address the complex risk behaviors among African-American female adolescents in disadvantaged communities in North Carolina. In a two-group randomized trial, we reached 237 sexually active, substance-using African-American female adolescents, to test a risk-reduction intervention, the Young Women's CoOp (YWC), relative to a nutrition control. In efficacy analyses adjusting for baseline condom use, at three-month follow-up participants in the YWC were significantly less likely to report sex without a condom at last sex relative to control. There were mixed findings for within-group differences over follow-up, underscoring the challenges for intervening with substance-using female youths.

2.
Subst Abuse Treat Prev Policy ; 12(1): 29, 2017 05 30.
Article in English | MEDLINE | ID: mdl-28558841

ABSTRACT

BACKGROUND: People who inject drugs (PWID) often have poor health and lack access to health care. The aim of this study was to examine whether PWID engage in self-treatment through nonmedical prescription opioid use (NMPOU). We describe the prevalence and features of self-reported physical pain and its association with NMPOU. METHODS: PWID (N = 702) in San Francisco, California (age 18+) were recruited to complete interviewer administered surveys between 2011 and 2013. Multivariate logistic regression analysis was conducted to examine the associations among self-reported pain dimensions (past 24-h average pain, pain interference with functional domains) and NMPOU, controlling for age, sex, psychiatric illness, opioid substitution treatment, homelessness, street heroin use and unmet healthcare needs. RESULTS: Almost half of the sample reported pain, based on self-reported measures in the 24 h before their interview. The most common pain locations were to their back and lower extremities. Past 24-h NMPOU was common (14.7%) and associated with past 24 h average pain intensity on a 10 point self-rating scale (adjusted odds ratio [AOR] = 2.15, 95% confidence interval [CI] 1.21-3.80), and past 24 h pain interference with general activity (AOR 1.82 [95% CI 1.04-3.21]), walking ability (AOR 2.52 [95% CI 1.37-4.63]), physical ability (AOR 2.01 [95% CI 1.16-3.45]), sleep (AOR 1.98 [95% CI 1.13-3.48]) and enjoyment of life (AOR 1.79 [95% CI 1.02-3.15]). CONCLUSION: Both pain and NMPOU are common among PWID, and highly correlated in this study. These findings suggest that greater efforts are needed to direct preventive health and services toward this population.


Subject(s)
Opioid-Related Disorders/epidemiology , Pain/drug therapy , Pain/epidemiology , Self Medication/statistics & numerical data , Substance Abuse, Intravenous/epidemiology , Substance-Related Disorders/epidemiology , Adolescent , Adult , Aged , California , Comorbidity , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Prevalence , Young Adult
3.
Addict Behav ; 69: 65-77, 2017 06.
Article in English | MEDLINE | ID: mdl-28152391

ABSTRACT

In the United States, nonmedical prescription opioid use is a major public health concern. Various policy initiatives have been undertaken to tackle this crisis, including state prescription drug monitoring programs (PDMPs). This study uses the 2004-2014 National Survey of Drug Use and Health (NSDUH) and exploits state-level variation in the timing of PDMP implementation and PDMP characteristics to investigate whether PDMPs are associated with a reduction in prescription opioid misuse or whether they have the unintended consequence of increasing heroin use. In addition, the study examines the impact of PDMPs on the availability of opioids from various sources. The study finds no effect of PDMP status on various measures of nonmedical prescription opioid use (abuse, dependence, and initiation), but finds evidence of a reduction in the number of days of opioid misuse in the past year. The study also finds that implementation of PDMP was not associated with an increase in heroin use or initiation, but was associated with an increase in number of days of heroin use in the past year. Findings also suggest that PDMPs were associated with a significant decline in doctor shopping among individuals without increasing reliance on illegal sources (e.g., drug dealers, stealing, etc.) or social sources (friends or relatives) as a means of obtaining opioids. The President's FY2017 budget proposed the allocation of $1.1 billion in an effort to reduce prescription drug misuse, and highlighted the use of PDMPs as a policy tool. This study documents evidence that PDMPs might be having measurable impact.


Subject(s)
Health Surveys/statistics & numerical data , Heroin Dependence/epidemiology , Prescription Drug Misuse/statistics & numerical data , Prescription Drug Monitoring Programs/statistics & numerical data , Adolescent , Adult , Aged , Female , Health Surveys/methods , Humans , Male , Middle Aged , United States/epidemiology , Young Adult
4.
Subst Abus ; 38(1): 105-112, 2017.
Article in English | MEDLINE | ID: mdl-27897966

ABSTRACT

BACKGROUND: People who inject drugs (PWID) are at increased risk for bacterial skin and soft tissue infections (SSTIs). Although SSTIs pose significant health risks, little is known about their prevalence and characteristics in the population of PWID in the United States. This study investigates whether behavioral factors related to skin and equipment hygiene and tissue-damaging injection practices are associated with recent SSTIs among PWID. METHODS: Active PWID were recruited using targeted sampling in San Francisco in 2011-2013. Interviewers collected information on behavioral risk factors of past-month self-reported SSTIs. Inferential analyses used multivariate logistic regression methods (i.e., generalized linear model) to characterize risk factors for past-month SSTIs. RESULTS: The self-reported prevalence of lifetime, past-year, and past-month SSTI was 70%, 29%, and 11%, respectively. Several factors were significantly associated with past-month SSTIs in bivariate analysis, including injecting nonpowder drugs (odds ratio [OR] = 3.57; 95% confidence interval [CI] = 1.23, 10.35; P = .01), needle-licking before injection (OR = 3.36; 95% CI = 1.28, 8.81; P = .01), injecting with someone else's preused syringe/needle (OR = 7.97; 95% CI = 2.46, 25.83; P < .001), being injected by another person (OR = 2.63; 95% CI = 1.02, 6.78; P = .04), infrequent skin cleaning before injection (OR = 2.47; 95% CI = 1.00, 6.10; P = .04), and frequent injections (P = .02). In multivariate analysis, only syringe/needle sharing (adjusted OR = 6.38; 95% CI = 1.90, 21.46) remained statistically significant. CONCLUSION: SSTIs are common among PWID. These data highlight the importance of clinical and public health screening efforts to reduce SSTIs. Needle exchange programs may be good venues for SSTIs screening and treatment.


Subject(s)
Injections/psychology , Skin Diseases, Infectious/epidemiology , Soft Tissue Infections/epidemiology , Substance Abuse, Intravenous/psychology , Adult , Female , Humans , Injections/adverse effects , Injections/statistics & numerical data , Male , Middle Aged , Prevalence , Risk Factors , San Francisco/epidemiology
5.
BMC Psychiatry ; 16: 274, 2016 08 04.
Article in English | MEDLINE | ID: mdl-27488186

ABSTRACT

BACKGROUND: Nonmedical prescription drug use (NMPDU) refers to the self-treatment of a medical condition using medication without a prescriber's authorization as well as use to achieve euphoric states. This article reports data from a cross-national investigation of NMPDU in five European Countries, with the aim to understand the prevalence and characteristics of those engaging in NMPDU across the EU. METHODS: A parallel series of self-administered, cross-sectional, general population surveys were conducted in 2014. Data were collected using multi-stage quota sampling and then weighted using General Exponential Model. A total of 22,070 non-institutionalized participants, aged 12 to 49 years, in 5 countries: Denmark, Germany, Great Britain, Spain, and Sweden. Lifetime and past-year nonmedical use of prescription medications such as stimulants, opioids, and sedatives were ascertained via a modified version of the World Health Organization's Composite International Diagnostic Interview. Information about how the medications were acquired for NMPDU were also collected from the respondent. RESULTS: Lifetime and past-year prevalence of nonmedical prescription drug use was estimated for opioids (13.5 and 5.0 %), sedatives (10.9 and 5.8 %), and stimulants (7.0 and 2.8 %). Germany exhibited the lowest levels of NMPDU, with Great Britain, Spain, and Sweden having the highest levels. Mental and sexual health risk factors were associated with an increased likelihood of past-year nonmedical prescription drug use. Among past-year users, about 32, 28, and 52 % of opioid, sedative, and stimulant nonmedical users, respectively, also consumed illicit drugs. Social sources (sharing by friends/family) were the most commonly endorsed methods of acquisition, ranging from 44 % (opioids) to 62 % (sedatives). Of interest is that Internet pharmacies were a common source of medications for opioids (4.1 %), stimulants (7.6 %), and sedatives (2.7 %). CONCLUSIONS: Nonmedical prescription drug use was reported across the five EU countries we studied, with opioids and sedatives being the most prevalent classes of prescription psychotherapeutics. International collaborations are needed for continued monitoring and intervention efforts to target population subgroups at greatest risk for NMDU.


Subject(s)
Analgesics, Opioid/therapeutic use , Central Nervous System Stimulants/therapeutic use , Hypnotics and Sedatives/therapeutic use , Prescription Drugs/therapeutic use , Substance-Related Disorders/epidemiology , Adult , Cross-Sectional Studies , Denmark/epidemiology , European Union , Female , Germany/epidemiology , Humans , Male , Prevalence , Risk Factors , Spain/epidemiology , Sweden/epidemiology , United Kingdom/epidemiology , Young Adult
6.
Subst Abuse Rehabil ; 7: 87-98, 2016.
Article in English | MEDLINE | ID: mdl-27418863

ABSTRACT

BACKGROUND: The primary aim of this work was to present the prevalence data from the National Epidemiologic Survey on Alcohol and Related Conditions (NESARC), a representative 3-year longitudinal survey (ages 18+ years) that captured information on patterns of self-reported pain interference and prescription pain reliever misuse. A second aim was to assess the degree to which the risk of various types of opioid misuse (onset, desistance, and incidence of dependence) was related to the longitudinal course of self-reported pain interference over the 3-year period. METHODS: We used a two-wave, nationally representative sample of adults (aged 18+ years) in which the baseline data were collected during 2001-2002 and a single follow-up was obtained ~3 years later (2004-2005 with 34,332 respondents with complete data on study variables for both waves). RESULTS: Our findings indicated that ~10% reported high pain interference in the past month at each wave. There was tremendous stability in levels of pain, with ~5% reporting consistent levels of high impairment over the 3-year study, a proxy for chronic pain. Levels of pain were more strongly associated with prescription pain reliever misuse concurrently rather than prospectively, and the association was largely linear, with the likelihood of misuse increasing with levels of pain. Finally, health service factors were also prominent predictors of onset, but not the outcomes, of desistance or transitions to problem use. CONCLUSION: This study is the first to use a nationally representative sample with measures of pain and drug use history collected over an extended period. These results may help provide clinicians with an understanding that the risk of misuse is greatest when pain is active and may help guide the selection of appropriate intervention materials and monitor strategies for those at greatest risk.

7.
Health Educ Res ; 31(4): 535-41, 2016 08.
Article in English | MEDLINE | ID: mdl-27142851

ABSTRACT

This study examines the relationship between self-reports of being high on marijuana and perceptions about driving high or drunk. Data were collected in 2014 from an online convenience sample of adult, past 30-day marijuana and hashish users in Colorado and Washington (n = 865). Respondents were asked, "Were you high or feeling the effects of marijuana or hashish when you took this survey?" Logistic regression was used to assess the relationship between being high and beliefs about driving high, controlling for demographics and marijuana use. Respondents who reported being high at the time of survey administration had higher odds of agreeing with the statements, "I can safely drive under the influence of marijuana" (OR = 3.13, P < 0.001) and "I can safely drive under the influence of alcohol" (OR = 3.71, P < 0.001) compared with respondents who did not report being high. Respondents who were high also had higher odds of being open to driving high under certain circumstances. Being high may influence perceptions about the safety of drugged and drunk driving. The effectiveness of public health messages to prevent drugged and drunk driving may depend in part on how persuasive they are among individuals who are high.


Subject(s)
Driving Under the Influence/psychology , Safety , Adolescent , Adult , Alcohol Drinking/psychology , Automobile Driving/psychology , Female , Humans , Male , Marijuana Abuse/psychology , Middle Aged , Self Report , Surveys and Questionnaires , Young Adult
8.
J Stud Alcohol Drugs ; 77(3): 431-40, 2016 05.
Article in English | MEDLINE | ID: mdl-27172575

ABSTRACT

OBJECTIVE: Prior studies of the association between neurocognitive functions and marijuana use among adolescents are mostly cross-sectional and conducted in adolescents who have already initiated marijuana use. The current study used a longitudinal design on a preadolescent, substance-naive sample. We sought to identify demographic factors associated with neurocognitive functions and the complement of neurocognitive function characteristics that predict marijuana initiation in adolescents. METHOD: Substance-naive adolescents (n = 465) ages 10-12 years (51% male) were recruited from a community with high levels of adolescent marijuana use and prospectively followed to ages 12-15. Tasks measuring neurocognitive functions were administered and audio-assisted interviews were conducted. Two types of models were estimated for each outcome: forced-entry models and another using stepwise selection via bidirectional elimination with varying tolerance levels to account for selection misspecification. RESULTS: About 10% (n = 49) initiated marijuana use over the study period. Child's age, academic achievement, and parental education were associated with baseline neurocognitive functions; namely, positive emotion attributions and lower impulsivity. Facial recognition-particularly misattribution of sad faces-was the strongest predictor of marijuana initiation, including in the stepwise model (partial OR = 1.3, 95% CI [1.03, 1.63], p < .05) that resulted in the best-fitting model. CONCLUSIONS: Prediction of marijuana initiation was improved in stepwise models compared with forced-entry models. Emotion perception appears to be an early developmental risk factor that is prospectively associated with marijuana initiation; as expected, other neurocognitive functions did not play an interactive role. Future studies of the interrelationships between emotion perception and the myriad other factors implicated in marijuana initiation, including neurocognitive functions not measured here, will provide a more comprehensive understanding of risk for marijuana initiation.


Subject(s)
Cognition , Marijuana Smoking/psychology , Adolescent , Adult , Child , Female , Humans , Impulsive Behavior , Longitudinal Studies , Male , Prospective Studies , Risk Factors
9.
Drug Alcohol Depend ; 159: 101-8, 2016 Feb 01.
Article in English | MEDLINE | ID: mdl-26748409

ABSTRACT

BACKGROUND: This study examined poly-drug use involving the use of cannabis with nonmedical prescription pain reliever use (NMPR) and alcohol use. METHODS: Computer-assisted survey data from the National Survey on Drug Use and Health were examined. The NSDUH is an annual, cross-sectional survey of non-institutionalized citizens in the United States (ages 12+). Replicate analyses were conducted using the 2013 and 2003 survey waves. RESULTS: Higher levels of cannabis use were consistently associated with more frequent consumption of prescription pain relievers, with findings replicating in both 2013 and 2003. While the prevalence of dual users declined from 2003 (2.5%) to 2013 (2.3%), the average number of days used among dual users increased by an average of 20 days over that period. These changes largely occurred among those aged 35 or older, males, whites, and non-illicit drug users. Past-year marijuana use increased by 16% (10.8-12.6%, p-value<.001) whereas NMPR decreased by 15% (4.9-4.2%, p-value<.001). The largest changes occurred after 2011. Persons using the most cannabis generally had higher levels of alcohol use relative to those using the least amount of cannabis. There was a significant increase in the prevalence of dual use between 2003 (10.2%) and 2013 (11.6%), while the prevalence of past-year alcohol use remained relatively stable. CONCLUSIONS: Clinical efforts and public health interventions should consider the possible co-ingestion of cannabis with NMPR and alcohol, as concomitant use may portend negative health effects in the short and long-term.


Subject(s)
Alcohol Drinking/epidemiology , Analgesics/administration & dosage , Marijuana Smoking/epidemiology , Prescription Drugs/administration & dosage , Self Medication , Substance-Related Disorders/epidemiology , Adolescent , Adult , Alcohol Drinking/trends , Cross-Sectional Studies , Female , Humans , Male , Marijuana Smoking/trends , Middle Aged , Prevalence , United States/epidemiology , Young Adult
10.
Methods Rep RTI Press ; 20162016 Nov.
Article in English | MEDLINE | ID: mdl-28127591

ABSTRACT

Food products containing cannabis extract (edibles) have emerged as a popular and lucrative facet of the legalized market for both recreational and medicinal cannabis. The many formulations of cannabis extracts used in edibles present a unique regulatory challenge for policy makers. Though edibles are often considered a safe, discreet, and effective means of attaining the therapeutic and/or intoxicating effects of cannabis without exposure to the potentially harmful risks of cannabis smoking, little research has evaluated how ingestion differs from other methods of cannabis administration in terms of therapeutic efficacy, subjective effects, and safety. The most prominent difference between ingestion and inhalation of cannabis extracts is the delayed onset of drug effect with ingestion. Consumers often do not understand this aspect of edible use and may consume a greater than intended amount of drug before the drug has taken effect, often resulting in profoundly adverse effects. Written for the educated layperson and for policy makers, this paper explores the current state of research regarding edibles, highlighting the promises and challenges that edibles present to both users and policy makers, and describes the approaches that four states in which recreational cannabis use is legal have taken regarding regulating edibles.

11.
Am J Public Health ; 106(2): 298-300, 2016 Feb.
Article in English | MEDLINE | ID: mdl-26691120

ABSTRACT

We examined initiation patterns among different birth cohorts of people who used prescription opioids and heroin because of historical differences in drug use availability. We examined data from a community-based study of persons who inject drugs (n = 483) in California and a general population survey from the National Survey on Drug Use and Health (n = 1264) and found that individuals born after 1980 were more likely than were individuals born before 1980 to initiate opioids through nonmedical use of prescription opioids than heroin.


Subject(s)
Analgesics, Opioid/therapeutic use , Heroin , Pain/drug therapy , Substance-Related Disorders/epidemiology , Adolescent , Adult , Age of Onset , Aged , California , Cohort Studies , Humans , Middle Aged , Prescription Drug Misuse/adverse effects , Young Adult
12.
Drug Alcohol Depend ; 153: 236-41, 2015 Aug 01.
Article in English | MEDLINE | ID: mdl-26051162

ABSTRACT

BACKGROUND: Clinical, experimental, and ethnographic research suggests that cannabis may be used to help manage pain. Ethnographic research has revealed that some people are using cannabis to temper their illicit opioid use. We seek to learn if there is an association between cannabis use and the frequency of nonmedical opioid use among people who inject drugs (PWID). METHODS: PWID were recruited using targeted sampling methods in Los Angeles and San Francisco, California, 2011-2013. We limited analysis to people who used opioids in past 30 days (N=653). OUTCOME VARIABLE: number of times used any opioids non-medically in past 30 days. Explanatory variable: any cannabis use past 30 days. STATISTICS: multivariable linear regression with a log-transformed outcome variable. RESULTS: About half reported cannabis use in the past 30 days. The mean and median number of times using opioids in past 30 days were significantly lower for people who used cannabis than those who did not use cannabis (mean: 58.3 vs. 76.4 times; median: 30 vs 60 times, respectively; p<0.003). In multivariable analysis, people who used cannabis used opioids less often than those who did not use cannabis (Beta: -0.346; 95% confidence interval: -0.575, -0.116; p<0.003). CONCLUSIONS: There is a statistical association between recent cannabis use and lower frequency of nonmedical opioid use among PWID. This may suggest that PWID use cannabis to reduce their pain and/or nonmedical use of opioids. However, more research, including prospective longitudinal studies, is needed to determine the validity of these findings.


Subject(s)
Marijuana Smoking/epidemiology , Opioid-Related Disorders/epidemiology , Substance Abuse, Intravenous/epidemiology , Adolescent , Adult , Female , Humans , Los Angeles/epidemiology , Male , Middle Aged , Prospective Studies , San Francisco/epidemiology , Young Adult
14.
J Ment Health Policy Econ ; 18(1): 3-15, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25862204

ABSTRACT

BACKGROUND: Nonmedical prescription drug use is estimated to be the second most abused category of drugs after marijuana among adolescents. Prescription drugs can be highly addictive and prolonged use can produce neurological changes and physiological dependence and could result in adverse mental health outcomes. This topic is largely unexplored, as current knowledge of possible mechanisms of the linkage between adverse mental health consequences and prescription drug misuse is limited. AIM OF THE STUDY: This study explores the relationship between nonmedical use of prescription drugs and depression outcomes among adolescents. Given their complex and confounded relationship, our purpose is to better understand the extent to which nonmedical use of prescription drugs is an antecedent of depressive episodes. METHODS: Using data from the 2008-2012 National Survey on Drug Use and Health, the study employs a propensity score matching methodology to ascertain whether nonmedical use of prescription drugs is linked to major depressive episodes among adolescents. RESULTS: The results document a positive relationship between nonmedical prescription drug use and major depressive episodes among adolescents. Specifically, the results indicate that adolescents who used prescription drugs non-medically are 33% to 35% more likely to experience major depressive episodes compared to their non-abusing counterparts. IMPLICATIONS FOR HEALTH POLICY: This provides additional evidence about the potential public health consequences of misuse of prescription drugs on adverse mental health outcomes. Given the significant increased risk of major depressive episode among adolescents who use prescription drugs nonmedically, it seems that the prevention of nonmedical prescription drug use warrants the utilization of both educational and public health resources. IMPLICATIONS FOR FUTURE RESEARCH: An important area for future research is to understand how any policy initiatives in this area must strike a balance between the need to minimize the misuse of prescription drugs and the need to ensure access for their legitimate health care use.


Subject(s)
Analgesics, Opioid/administration & dosage , Depressive Disorder, Major/epidemiology , Mental Health , Substance-Related Disorders/epidemiology , Adolescent , Age Factors , Child , Depressive Disorder, Major/psychology , Female , Humans , Male , Sex Factors , Socioeconomic Factors , Substance-Related Disorders/psychology
15.
J Stud Alcohol Drugs ; 76(2): 195-203, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25785794

ABSTRACT

OBJECTIVE: We assessed the prevalence and characteristics of prescription drug misuse among youth ages 15-25 to examine differences by student and employment status, and associations with workplace antidrug policies and programs. METHOD: Multivariate logistic regressions analyzed associations in weighted data on the 20,457 young adults in the combined 2004-2008 National Surveys on Drug Use and Health. Demographic controls included sex, race, community size, and age group. RESULTS: After we accounted for demographic controls, at ages 15-25, students were less likely than nonstudents to misuse prescription drugs. Segmenting student from nonstudent groups, working consistently was associated with a further reduction in misuse for those ages 18-25. When we controlled for demographics and substance use history, both Employee Assistance Program (EAP) services and awareness that one's employer had a drug-free workplace policy were associated with significantly lower misuse of prescription drugs (OR = 0.85 for each program, 95% CI [0.73, 1.00] and [0.72, 1.00]). Associations of workplace antidrug policies and programs with marijuana use and with Diagnostic and Statistical Manual for Mental Disorders, Fourth Edition, criteria for alcohol abuse and dependence contrasted sharply with these patterns. All four aspects were significantly associated with lower marijuana use. None was associated with problem drinking. CONCLUSIONS: Protective effects of drug-free workplace policy and EAPs persist after other substance use was controlled for. Comparing the effects of workplace programs on illicit drug use and problem drinking versus prescription misuse suggests that those protective associations do not result from selection bias. Thus, drug-free workplace policies and EAPs appear to help protect younger workers against prescription misuse. If workplace substance use disorder programs focused prevention messages and interventions on prescription drug misuse, their impact on misuse might increase.


Subject(s)
Alcoholism/epidemiology , Marijuana Smoking/epidemiology , Prescription Drug Misuse/statistics & numerical data , Substance-Related Disorders/epidemiology , Adolescent , Adult , Employment/statistics & numerical data , Female , Humans , Logistic Models , Male , Prescription Drugs/administration & dosage , Prevalence , Schools , Students/statistics & numerical data , United States/epidemiology , Workplace , Young Adult
16.
PLoS One ; 10(3): e0118149, 2015.
Article in English | MEDLINE | ID: mdl-25786224

ABSTRACT

Fifty percent of variability in HIV-1 susceptibility is attributable to host genetics. Thus identifying genetic associations is essential to understanding pathogenesis of HIV-1 and important for targeting drug development. To date, however, CCR5 remains the only gene conclusively associated with HIV acquisition. To identify novel host genetic determinants of HIV-1 acquisition, we conducted a genome-wide association study among a high-risk sample of 3,136 injection drug users (IDUs) from the Urban Health Study (UHS). In addition to being IDUs, HIV-controls were frequency-matched to cases on environmental exposures to enhance detection of genetic effects. We tested independent replication in the Women's Interagency HIV Study (N=2,533). We also examined publicly available gene expression data to link SNPs associated with HIV acquisition to known mechanisms affecting HIV replication/infectivity. Analysis of the UHS nominated eight genetic regions for replication testing. SNP rs4878712 in FRMPD1 met multiple testing correction for independent replication (P=1.38x10(-4)), although the UHS-WIHS meta-analysis p-value did not reach genome-wide significance (P=4.47x10(-7) vs. P<5.0x10(-8)) Gene expression analyses provided promising biological support for the protective G allele at rs4878712 lowering risk of HIV: (1) the G allele was associated with reduced expression of FBXO10 (r=-0.49, P=6.9x10(-5)); (2) FBXO10 is a component of the Skp1-Cul1-F-box protein E3 ubiquitin ligase complex that targets Bcl-2 protein for degradation; (3) lower FBXO10 expression was associated with higher BCL2 expression (r=-0.49, P=8x10(-5)); (4) higher basal levels of Bcl-2 are known to reduce HIV replication and infectivity in human and animal in vitro studies. These results suggest new potential biological pathways by which host genetics affect susceptibility to HIV upon exposure for follow-up in subsequent studies.


Subject(s)
Carrier Proteins/genetics , Genetic Loci , Genetic Predisposition to Disease , HIV Infections/genetics , HIV-1/physiology , Virus Replication , Cross-Sectional Studies , F-Box Proteins/genetics , Female , Gene Expression , Genome-Wide Association Study , HIV Infections/physiopathology , HIV-1/pathogenicity , Humans , Male , Polymorphism, Single Nucleotide , Proto-Oncogene Proteins c-bcl-2/genetics , Ubiquitin-Protein Ligases/genetics
17.
Drug Alcohol Depend ; 150: 92-7, 2015 May 01.
Article in English | MEDLINE | ID: mdl-25754939

ABSTRACT

BACKGROUND: Concomitant use of opioids and promethazine has been reported in various subpopulations, including methadone maintenance patients, injection drug users, and at-risk teenagers. Promethazine is thought to potentiate the "high" from opioids. However, to date, the prevalence of promethazine use has not been determined among patients prescribed opioids for chronic pain. METHODS: Urine samples from 921 patients prescribed opioids for chronic pain were analyzed for promethazine. Demographic data, toxicology results, and opioid prescription information were obtained through medical record abstraction. We assessed the prevalence and factors associated with promethazine use with bivariable and multivariable statistics. RESULTS: The prevalence of promethazine-positive urine samples among chronic pain patients was 9%. Only 50% of promethazine-positive patients had an active prescription for promethazine. Having benzodiazepine-positive urine with no prescription for a benzodiazepine was statistically associated with promethazine use. Also, having a prescription for methadone for pain or being in methadone maintenance for the treatment of opioid dependence were both statistically associated with promethazine use. Chronic pain patients prescribed only a long-acting opioid were more likely to have promethazine-positive urines than patients prescribed a short-acting opioid. CONCLUSIONS: The study provides compelling evidence of significant promethazine use in chronic pain patients. Promethazine should be considered as a potential drug of abuse that could cause increased morbidity in opioid-using populations.


Subject(s)
Chronic Pain/drug therapy , Histamine H1 Antagonists/therapeutic use , Prescription Drug Misuse/statistics & numerical data , Promethazine/therapeutic use , Adolescent , Adult , Aged , Analgesics, Opioid/therapeutic use , Female , Humans , Male , Methadone/therapeutic use , Middle Aged , Narcotics/therapeutic use , Opiate Substitution Treatment , Opioid-Related Disorders/rehabilitation , Young Adult
18.
AIDS Behav ; 19(1): 192-8, 2015 Jan.
Article in English | MEDLINE | ID: mdl-24934652

ABSTRACT

Drug abuse is a contributing factor in women's HIV risk in low-income communities in Cape Town, South Africa. This study assessed whether experiencing violence is associated with reduced drug abstinence among adult women (n = 603) participating in a randomized field trial for an HIV prevention study in Cape Town. In relation to drug abstinence at 12-month follow-up, multivariable regression models were used to assess (1) baseline partner and non-partner victimization, and (2) victimization at 12-month follow-up among participants reporting baseline victimization. Baseline partner (AOR = 0.6; 95 % CI 0.4-0.9) and non-partner victimization (AOR = 0.6; 95 % CI 0.4-0.9) were associated with a reduced likelihood of drug abstinence at follow-up. Among participants who reported victimization at baseline, those no longer reporting victimization at follow-up did not differ significantly in drug abstinence compared with those who reported victimization at follow-up. The study findings highlight the lasting impact of victimization on women's drug use outcomes, persisting regardless of whether violence was no longer reported at follow-up. Overall, the findings support the need for the primary prevention of violence to address the cycle of violence, drug use, and HIV among women in this setting.


Subject(s)
HIV Infections/prevention & control , Sexual Behavior/statistics & numerical data , Spouse Abuse/statistics & numerical data , Substance-Related Disorders/epidemiology , Violence/statistics & numerical data , Adult , Crime Victims , Female , Follow-Up Studies , HIV Infections/transmission , Humans , Incidence , Risk Factors , Self Report , Sexual Behavior/psychology , Social Environment , South Africa/epidemiology , Spouse Abuse/prevention & control , Spouse Abuse/psychology , Substance-Related Disorders/psychology , Violence/prevention & control , Violence/psychology
19.
BMC Public Health ; 14: 1074, 2014 Oct 15.
Article in English | MEDLINE | ID: mdl-25318563

ABSTRACT

BACKGROUND: South Africa has 6.4 million adults over the age of 15 living with HIV. Gender inequality issues continue to drive the HIV epidemic in South Africa, where Black African women bear the greatest HIV burden. Limited access to services; little capacity to negotiate sex and condom use; and other legal, social, and economic inequities make women highly vulnerable to HIV infection. Behavioral interventions have been shown to decrease risk behaviors, but they have been less successful in reducing HIV incidence. Conversely, biomedical prevention strategies have proven to be successful in reducing HIV incidence, but require behavioral interventions to increase uptake and adherence. Consequently, there is a need for integrated approaches that combine biomedical and behavioral interventions. Effective combination prevention efforts should comprise biomedical, behavioral, and structural programming proven in randomized trials that focuses on the driving forces and key populations at higher risk of HIV infection and transmission. METHODS/DESIGN: This prospective, geographically clustered randomized field experiment is enrolling participants into two arms: a control arm that receives standard HIV testing and referral for treatment; and an intervention arm that receives an evidence-based, woman-focused behavioral intervention that emphasizes risk reduction and retention, the Women's Health CoOp. We divided the city of Pretoria into 14 mutually exclusive geographic zones and randomized these zones into either the control arm or the intervention arm. Outreach workers are recruiting drug-using women from each zone. At baseline, eligible participants complete a questionnaire and biological testing for HIV, recent drug use, and pregnancy. Follow-up interviews are completed at 6 and 12 months. DISCUSSION: The biobehavioral intervention in this study merges an efficacious behavioral HIV prevention intervention for women with biomedical prevention through HIV treatment as prevention using a Seek, Test, Treat and Retain strategy. This combination biobehavioral intervention is designed to (1) improve the quality of life and reduce HIV infectiousness among women who are HIV positive, and (2) reduce HIV risk behaviors among women regardless of their HIV status. If efficacious, this intervention could help control the HIV epidemic in South Africa. TRIAL REGISTRATION: Trial registration no: NCT01497405.


Subject(s)
Black People , HIV Infections/prevention & control , Risk Reduction Behavior , Substance-Related Disorders , Vulnerable Populations , Women's Health , Adolescent , Adult , Female , HIV Infections/diagnosis , HIV Infections/drug therapy , Health Status Disparities , Healthcare Disparities , Humans , Incidence , Mass Screening , Pregnancy , Prospective Studies , Quality of Life , Risk-Taking , Safe Sex , South Africa , Young Adult
20.
AIDS Care ; 26(12): 1494-9, 2014.
Article in English | MEDLINE | ID: mdl-25040338

ABSTRACT

Alcohol and other drug use can negatively affect adherence to and retention in antiretroviral therapy (ART) among people living with HIV/AIDS. Yet, there are few brief interventions that reduce these behaviors among this population. This article presents the findings from a randomized field experiment that assessed the effects of a woman-focused intervention (the Women's Health CoOp [WHC]) on reducing alcohol and other drug use among vulnerable women in Cape Town, South Africa. The analyses were limited to 84 women living with HIV who reported drinking alcohol at baseline. Because of the small sample size, analyses were performed using an exact logistic regression procedure. At 12-month follow-up, women in the WHC arm were more likely to be abstinent from alcohol (odds ratio [OR] = 3.61; 95% confidence intervals [CI] = 1.23, 11.70; p = 0.016) and somewhat more likely to test negative for other drugs (OR = 3.07; 95% CI = 0.83, 12.31; p = 0.105), compared with women in the comparison arms. This study provides preliminary evidence of the efficacy of a brief, woman-focused intervention in reducing alcohol and other drug use among vulnerable women living with HIV and it has implications for HIV treatment.


Subject(s)
Alcohol Drinking/adverse effects , Behavior Therapy/methods , HIV Infections/therapy , Medication Adherence , Women's Health , Adult , Anti-HIV Agents/therapeutic use , Female , Follow-Up Studies , HIV Infections/drug therapy , Humans , Patient Education as Topic , Risk Factors , Risk Reduction Behavior , South Africa , Surveys and Questionnaires , Treatment Outcome
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