Behavioral pharmacology of buprenorphine, with a
focus on preclinical models of reward and addiction
by
Tzschentke TM.
Grunenthal GmbH, Biomedical Research,
Department of Pharmacology,
Postfach 500444, 52088 Aachen, Germany,
thomas.tzschentke@grunenthal.de
Psychopharmacology (Berl) 2002 Apr;161(1):1-16

ABSTRACT

RATIONALE: Buprenorphine is a potent &mgr;-receptor partial agonist and is widely used as an analgesic drug. It is also increasingly considered to be an alternative to methadone in the maintenance and eventual detoxification of heroin addicts, and also in the treatment of cocaine addiction. So far, buprenorphine has been available as a sublingual tablet and as a solution for IV injection. Recently, a new transdermal formulation of buprenorphine in slow-release matrix patches has been introduced (Transtec) for the treatment of intermediate to severe pain. OBJECTIVES: The aim of this paper is to review, from a preclinical perspective, the current status of what is known about the behavioral pharmacology of buprenorphine, with a particular emphasis on the issues of reward, addiction, and dependence. It will also point to open questions that should be addressed in the future to improve our understanding of the effects and the mechanisms of action of this drug. RESULTS AND CONCLUSIONS: Since buprenorphine is a potent opioid drug, the issue of addiction and dependence in this context is an important one. Although there are still some gaps in the behavioral pharmacological characterization of buprenorphine, the general conclusion that can be drawn from the reviewed literature is that despite the high affinity of buprenorphine for the &mgr; receptor it appears to be a remarkably safe drug, with a benign overall side effect profile and low addictive and dependence-inducing potential. This favorable side effect profile appears to be due, to a large extent, to the partial agonistic properties of the drug, in combination with its particular receptor kinetics (i.e. very slow dissociation from the &mgr; receptor after binding).

Methadone
Alcoholism
Endomorphins
Norbuprenorphine
LAAM v methadone
Subutex and Suboxone
Opioids and depression
Buprenorphine and reward
Transdermal buprenorphine
Buprenorphine and naltrexone
Buprenorphine and the receptors
Buprenorphine for speedball users
Buprenorphine as an antidepressant
Buprenorphine: the standard wisdom
Pharmacokinetics and pharmacodynamics
Buprenorphine versus buprenorphine/nalaxone

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