This 4 year study aims to evaluate Naltrexone (N), Lofexidine (L) and their combination (N+L) in conjunction with psychosocial treatment to prevent relapse in detoxified heroin addicts. We hypothesize that each of these medications will be helpful, but that the combination of N+L will be more effective than either medication alone. The study will be done in collaboration with researchers at the Pavlov University in St. Petersburg, Russia. Subjects will be 280 male and female heroin addicts who have been detoxified in one of two addiction treatment hospitals in St. Petersburg. Patients must have a family member willing and able to supervise medication compliance. After giving informed consent and passing a narcan challenge, subjects will be randomly assigned to one of four groups of 70 patients each: N 50 mg a day + L placebo; L 2.4 mg a day + N placebo; N+L ; or N placebo + L placebo. All patients will receive biweekly clinical management/compliance enhancement counseling and treatment will last 6 months. Assessments will be at baseline, at each biweekly appointment, and at 3 and 6-months following the end of treatment. Primary outcomes will be drop-out and relapse to heroin dependence, adherence to medication, and protracted withdrawal symptoms; secondary outcomes will be HIV risk, psychiatric symptoms, and other measures of adjustment. This study will extend previous work at Pavlov Medical University with naltrexone and at Yale University with Iofexidine, will provide information about the efficacy of these medications in preventing relapse in a cultural setting where agonist substitution therapy is not available, and also provide data on the long term course of heroin addiction in this cultural setting.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Research Project (R01)
Project #
5R01DA018863-04
Application #
7289201
Study Section
Human Development Research Subcommittee (NIDA)
Program Officer
Biswas, Jamie
Project Start
2004-09-28
Project End
2011-05-31
Budget Start
2007-06-01
Budget End
2011-05-31
Support Year
4
Fiscal Year
2007
Total Cost
$155,473
Indirect Cost
Name
Baylor College of Medicine
Department
Psychiatry
Type
Schools of Medicine
DUNS #
051113330
City
Houston
State
TX
Country
United States
Zip Code
77030
Krupitsky, Evgeny; Zvartau, Edwin; Blokhina, Elena et al. (2013) Naltrexone with or without guanfacine for preventing relapse to opiate addiction in St.-Petersburg, Russia. Drug Alcohol Depend 132:674-80
Stotts, Angela L; Dodrill, Carrie L; Kosten, Thomas R (2009) Opioid dependence treatment: options in pharmacotherapy. Expert Opin Pharmacother 10:1727-40