The use of plasma levels to optimize methadone maintenance treatment

The question of the optimal methadone dose during maintenance therapy is controversial. For both philosophical and practical reasons, therapeutic drug monitoring has not been generally used. Some therapists prescribe low doses of methadone more for psychological than pharmacological reasons. This study examines, in 104 methadone patients, the relation between self-rating, observer-rating, urine tests, HIV-1 serostatus, daily methadone doses and plasma levels of methadone. No differences were found between HIV-1 infected and seronegative patients in these respects. The optimal methadone plasma level as judged by self- and observer-rating was more than 150 ng/ml. For oral methadone, the best results are obtained in patients receiving more than 90 mg daily. We found a significant relationship between methadone dose and plasma levels, also in patients who also used illicit drugs. We conclude that therapeutic drug monitoring should become routine in methadone treatment to achieve optimum results, especially in patients who complain of withdrawal symptoms and continue high-risk behaviour.     

Antisocial personality in treatment-seeking cocaine abusers: Psychosocial functioning and HIV risk

Antisocial personality disorder (ASP) is common in substance abusers and may be associated with increased severity of psychosocial problems and risk of HIV infection. This study compared 174 treatment-seeking cocaine abusers with and without ASP on Addiction Severity Index (ASI) scores and the HIV risk behavior scale. Patients with ASP comprised 35% of the sample. These patients evidenced more severe problems than non-ASP patients on alcohol, legal, and psychiatric indices of the ASI. Patients with ASP also reported greater participation in lifetime sexual risk behaviors, including number of casual sexual partners, inconsistent condom use, and frequency of anal sex. This study suggests the importance of screening for ASP when patients initiate treatment. Specific and more intensive treatment may be necessary to improve outcomes in this patient population.     

Educational lectures enhance knowledge about the human immunodeficiency virus (HIV) and reduce risky behavior and fear among methadone maintenance treatment patients

Abstract

Background: The aim of this study was to characterize human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS)-related knowledge and stigma among methadone maintenance treatment (MMT) patients and evaluate the contribution of an educational lecture in reducing risky behavior and unjustified overprotective behavior due to fear and stigma among MMT patients. Methods: Patients from an MMT clinic within a tertiary medical center were invited to an educational lecture on HIV/AIDS. Seventy participants (of current 330) were chosen by a random sample (December 2015), plus at-risk patients and HIV patients. Attendee compliance and change in scores of questionnaires on knowledge (modified HIV-K-Q-22) and on sexual and injection behaviors were studied. Results: Forty-six patients (65.7% compliance) attended the lecture, and their knowledge and behavior scores improved 2?weeks post-lecture (knowledge: from 14.2?±?3 to 19.0?±?2.2 [P?<?.0005], sexual behavior: from 12.1?±?2.9 to 8.8?±?3.0 [P?<?.0005], and injection behavior: from 7.3?±?6.2 to 0.2?±?1.3 [P?<?.0005]). The unjustified fear of proximity to HIV carriers reported by 50% attendees fell to 35% post-lecture. Eight months post-lecture, the scores on knowledge and risky behavior of 21 randomly chosen attendees were still better than pre-lecture scores (knowledge: 15.4?±?2.3 vs. 17.2?±?1.8 [paired t test, P?=?.001], sexual behavior: 13.2?±?2.3 vs. 9.7?±?2.9 [P?<?.0005], and injection behavior: 9.3?±?5.6 vs. 2.8?±?3.1 [P?<?.0005]). Drug abuse and treatment adherence were not related to intervention and to risky behavior. Conclusions: More knowledge, less fear, and less risky behavior immediately and at 8?months post-lecture reflect the success and importance of the educational intervention. Future efforts are needed in order to reduce ignorance and fear associated with HIV/AIDS.     

Anti-social personality disorder and response to methadone maintenance treatment

A sample of 183 current methadone maintenance patients were interviewed on their drug use history, criminal history, current drug use, and symptoms of Anti-social Personality Disorder (ASPD). Thirty-nine percent of patients met the DSM-III-R criteria for a diagnosis of ASPD. ASPD patients had an earlier onset of drug use, drug injecting, heroin use, had wider polydrug using histories and had been arrested earlier and more frequently than other patients. Despite the different pretreatment histories of ASPD and other patients, there were no differences between the two groups in retention in treatment, methadone dosage or heroin use. It is concluded that heroin-dependent ASPD patients can be successfully retained in methadone treatment, on similar methadone doses and with similar in-treatment drug use patterns as those of non-ASPD heroin dependent patients.     

A staging system to predict prognosis among methadone maintenance patients,based on admission characteristics

As U.S. general internists play an increasing role in providing opioid maintenance therapy in practice offices, they are having to face the challenge of identifying patients who need specialized services especially at the outset of treatment. In methadone maintenance treatment, prognostic studies have failed to find robust predictors on the basis of single predictive variables. We hypothesize that a multivariable staging system will predict treatment outcome more accurately than single variables. We reviewed baseline and treatment data regarding 226 consecutive patients admitted to a methadone maintenance program in New Haven, Connecticut, from January 1, 1993 to March 28, 1994, and followed until December 1, 1996. The staging system was developed from the data on the first 112 patients, confirmed in the remaining 114 patients, and then applied to the entire cohort of 226 patients. Retention was the main outcome measure used in developing the staging system. The staging system was also validated as a predictor of illicit drug use during treatment and adverse discharge. In the staging system one point is scored for each of the following: use of more than two bags of heroin daily, previous prison term, previous period in reform school, and a history of diseases related to substance use, e.g., endocarditis, hepatitis, abscesses, and overdose. The total score classifies patients as Stage I (0 and 1 points), Stage II (2 points), or Stage III (3 and 4 points). This staging system was significantly associated with retention in a proportional‐hazards model, and no other variable added any additional predictive influence. The specific stage was also found to be a significant predictor of adverse discharge. Although additional validation is necessary in other populations, we found the staging system to be a useful and simple way of identify ing patients at risk for early attrition and adverse discharge.     

Directly administered antiretroviral therapy: Pilot study of a structural intervention in methadone maintenance

Devising interventions to provide integrated treatment for addiction and medical problems is an urgent issue. This study piloted a structural intervention, Directly Administered Antiretroviral Therapy (DAART), to assist methadone-maintenance patients in HIV medication adherence. Twenty-four participants received: (1) antiretroviral medications at the methadone clinic daily before receiving their methadone; (2) take-home antiretroviral medication for days they were not scheduled to attend the methadone clinic, and (3) brief adherence counseling to address adherence barriers. DAART lasted 24 weeks, with a planned step-down to twice-weekly administration in weeks 25–36, followed by self-administration in weeks 37–48. Retention rates at weeks 24, 36, and 48 were 83, 92, and 75% respectively. DAART was associated with improvement in the proportion of participants achieving viral suppression as well as with high medication adherence rates (clinic-verified; 85% and self-reported 97%) during the active intervention phase. DAART was effective as an intervention but did not promote transition to self-administration. This study demonstrates that DAART is adaptable and simple enough to be implemented into methadone treatment programs interested in providing HIV adherence services.     

Methadone Maintenance Therapy and HIV Counseling and Testing are Associated with Lower frequency of Risky Behaviors Among Injection Drug Users in China

Three consecutive cross-sectional surveys were conducted among injection drug users (IDUs). Of 2,530 participants, 47.7% reported ever sharing needles, 78.2% having had unprotected sex in the last month, 34.4% not receiving either methadone maintenance therapy (MMT) or HIV voluntary counseling and testing (VCT), 4.8% ever receiving MMT-only, 36.6% ever receiving VCT-only, and 24.2% ever receiving both MMT and VCT. MMT-only and the combination of MMT and VCT had significant associations with needle sharing and on unprotected sexual behaviors. Effectively integrating VCT into MMT services is a logical way to maximize the impact of both interventions on risky behaviors among IDUs.     

社区美沙酮维持治疗对海洛因成瘾者高危行为的改变

目的：了解美沙酮门诊药物维持治疗对海洛因成瘾者高危行为改变的效果。方法：采用问卷对2006年9月～2008年12月在常州市美沙酮门诊接受治疗的371例吸毒者进行基线调查和1年后的高危行为评估调查。结果：受治者过去1个月注射吸毒的比例从治疗前的73．0％下降到治疗后的16．7％;在有注射行为人群中,过去1个月平均注射吸毒次数由参加治疗前的90次下降到治疗后的2．5次;过去1个月共用针具率由治疗前的2．2％降至治疗后的1．1％。最近1次性行为时安全套的使用率由治疗前的14．3％增至治疗后的28．1％。受治者中未出现新的HIV、HCV感染病例。结论：美沙酮维持治疗能够减少海洛因成瘾者毒品使用,减少注射毒品、共用针具等高危行为,提高安全性行为意识。     

The Relationship Between Vulnerable Attachment Style,Psychopathology, Drug Abuse,and Retention in Treatment Among Methadone Maintenance Treatment Patients

The relationship between vulnerable attachment style, psychopathology, drug abuse, and retention in treatment among patients in methadone maintenance treatment (MMT) was examined by the Vulnerable Attachment Style Questionnaire (VASQ), the Symptom Checklist-90 (SCL-90), and drug abuse urine tests. After six years, retention in treatment and repeated urine test results were studied. Patients with vulnerable attachment style (a high VASQ score) had higher rates of drug abuse and higher psychopathology levels compared to patients with secure attachment style, especially on the interpersonal sensitivity, anxiety, hostility, phobic anxiety, and paranoid ideation scales. Drug abstinence at baseline was related to retention in treatment and to higher rates of drug abstinence after six years in MMT, whereas a vulnerable attachment style could not predict drug abstinence and retention in treatment. Clinical Implications concerning treatment of drug abusing populations and methodological issues concerning the VASQ’s subscales are also discussed.     

306例吸毒者吸毒行为及HIV/AIDS的KAB调查

目的 :了解吸毒者的吸毒行为及有关HIV AIDS的知识、态度和行为情况。方法 :采用自制问卷匿名填表方法于 1998年 6月对昆明市两戒毒机构的戒毒人员进行横断面调查。调查结果用SPSS10 .0版本进行统计分析。结果 :77.1%的吸毒者以静脉注射的方式吸毒 ,其中 ,6 8.3%的人共用过注射器 ,仅 6 .2 %人采用正确方法消毒注射器。吸毒者中 79.6 %的人有两个以上的性伴侣 ,经常或每次使用安全套的人仅占 16 .9%。大多数吸毒者能正确回答艾滋病的传播途径但缺乏预防艾滋病的知识。结论 :吸毒人群感染HIV AIDS的危险行为非常普遍 ,且知晓知识到行为改变仍有很大距离 ,建议开展减少伤害的干预项目。     

Trends in Substance Abuse and Infectious Disease Over 20 Years in a Large Methadone Maintenance Treatment (MMT) Clinic in Israel

ABSTRACT

Background: The objective was to study substance abuse, infectious disease, and patient outcomes (retention and substance abuse abstinence) over 2 decades in a large methadone maintenance treatment (MMT) facility within a tertiary-referral medical center.Methods: Prevalence of substance abuse was determined monthly between 1993 (35 patients) and 2013 (350 patients) based on observed random urine tests. On entry, patients were tested for hepatitis C and human immunodeficiency virus (HIV) antibodies. One-year retention and substance abuse abstinence were calculated. Results: At admission, mean age and rate of cocaine and benzodiazepines abuse increased over the years, with no change in the prevalence of hepatitis C (50%) and HIV (<10%). Retention rate increased (P = .008) (range: 42.9%–92.4%; overall: 76.2%) and opiate abstinence also increased (P = .006) (range: 49.1%–85.7%; overall: 68.1%), reflecting outcome improvement over the years.Conclusions: Outcome improvement could be attributed to the staff's growing experience and improvements in treatment but also to changes in patient characteristics over the past 2 decades.     

Safety, efficacy, and tolerability of nelfinavir-containing antiretroviral therapy for patients coinfected with HIV and hepatitis C undergoing methadone maintenance

The safety, efficacy, and tolerability of nelfinavir (NFV)-containing antiretroviral therapy were evaluated in patients coinfected with HIV and hepatitis C undergoing methadone maintenance at an urban outpatient opioid treatment program serving a minority adult population. Eligibility covered methadone-maintained patients coinfected with HIV and hepatitis C who had received or were currently receiving NFV. The yield was 51 case patients. Parameters examined looked into safety, efficacy, and tolerability. Nelfinavir was discontinued in 2 patients for liver function abnormalities but resumed in 1 patient. One patient developed laboratory abnormalities during NFV therapy that were not present before NFV therapy; in 12 case patients, pre-NFV therapy liver function abnormalities resolved completely during NFV therapy. There was a statistically significant increase in CD4 count during NFV therapy. Viral load decreased or was unchanged in 10 case patients and increased in 8, of whom 5 had a CD4 count increase during NFV therapy. Three patients had diarrhea and 4 patients had constipation. Nelfinavir was not discontinued—neither was dose adjusted—in any of these patients. Patients who had received NFV ≥36 months had a smaller increase in mean methadone dose as compared with patients who had received NFV <36 months. The results show that NFV is safe, efficacious, and well tolerated.     

Hepatitis C and human immunodeficiency virus risk behaviors in polydrug users on methadone maintenance

We examined the impact of methadone maintenance treatment (MMT) on risk behaviors for transmission of blood-borne diseases in polydrug users who had tested positive or negative for hepatitis C virus (HCV). At intake, HCV-positive participants (n=362) engaged in more human immunodeficiency virus (HIV) risk behaviors (as measured by the HIV Risk-Taking Behavior Scale) than HCV-negative participants (n=297; p< .001). This difference was specific to injection-related behaviors and decreased significantly within the first few weeks of MMT (p< .0001). Where needles continued to be used, HCV-positive participants became more likely over time to engage in safer injecting practices. Furthermore, HCV-positive participants became more likely to use condoms than HCV-negative participants. These findings demonstrate that both drug- and sex-related risk behaviors decrease during MMT and emphasize the benefits of methadone programs for public health and HIV/HCV prevention.     

深圳市宝安区美沙酮门诊海洛因依赖人群HIV、HCV和梅毒感染状况分析

目的：了解深圳市宝安区美沙酮门诊海洛因依赖人群HIV、HCV和梅毒感染状况,为相应的疾病控制干预提供科学依据。方法：对参加维持治疗的249名海洛因依赖者进行HIV、HCV和梅毒血清学检测。结果：HIV抗体阳性率1．2％（3／249）;HCV抗体阳性率62．2％（155／249）,其中静脉注射吸毒者HCV阳性率72．82％（142／195）明显高于非静脉吸毒者24．07％（13／54）（P〈0．001）;梅毒抗体阳性率2．0％（5／249）;3名HIV及5名梅毒阳性患者均合并感染HCV。结论：深圳市宝安区美沙酮门诊海洛因依赖人群中HCV感染率较高,尤其是静脉注射吸毒者。     

Sociodemographic and Substance Use Disorder Determinants of HIV Sexual Risk Behavior in Men and Women in Outpatient Drug Treatment in the NIDA National Drug Abuse Treatment Clinical Trials Network

Background: Sexual risk behavior is now the primary vector of HIV transmission among substance users in the United States with gender as a crucial moderator of risk behavior. Objectives: The purpose of this study was to examine gender differences in factors (age, race/ethnicity, education) that predict main-partner unprotected sexual occasions (USO) using the unique platform of two parallel NIDA National Drug Abuse Treatment Clinical Trials Network gender-specific safer sex intervention trials. Methods: Baseline assessments of male (N = 430) and female (N = 377) participants included demographic characteristics; past 3-month sexual activity; and a diagnostic assessment for alcohol, cocaine/stimulant, and opioid use disorders. Using mixed effects generalized linear modeling of the main outcome USO, two-way interactions of gender with age, race/ethnicity, and education were evaluated and adjusted by alcohol, cocaine/stimulant, or opioid use disorder. Results: When adjusted for alcohol use disorder, the interaction of education and gender was significant. For men, a high school or greater education was significantly associated with more USO compared to men with less than high school. For women, greater than high school education was significantly associated with less USO compared to women with a high school education. None of the other interactions were significant when adjusted for cocaine/stimulant or opioid use disorder. Conclusions/Importance: This study demonstrates gender differences in the relationship of education, alcohol use disorder, and main-partner USO in individuals in substance abuse treatment. This underscores the importance of considering demographic and substance use factors in HIV sexual risk behavior and in crafting prevention messages for this population.