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The Neuroscientist
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REVIEW {blacksquare} : Long-lasting Effects of Recreational Drugs of Abuse on the Central Nervous System

Una D. McCann

Biological Psychiatry Branch NIMH-IRP Bethesda, Maryland

Kelly A. Lowe

Department of Neurology Johns Hopkins Medical Institutions Baltimore, Maryland

George A. Ricaurte

Department of Neurology Johns Hopkins Medical Institutions Baltimore, Maryland

Although a wealth of knowledge exists regarding the acute pharmacological effects of recreational drugs on the CNS, much less is known about the long-term toxic effects of recreational drugs on the CNS. Recent findings in nonhuman primates treated with amphetamine analogs, such as ±3,4-methylenedioxymetham phetamine (MDMA), indicate that these drugs can produce long-lasting, probably permanent, changes in brain serotonin innervation. Similarly, animals treated with phencyclidine (PCP) and related drugs develop neurodegenerative changes in selected brain regions. It seems clear, then, that some psychoactive drugs have the potential to produce persistent changes in CNS structure and, possibly, function. The goal of this article is to summarize current knowledge regarding the long-term effects of several popular recreational drugs, including MDMA and related amphetamine analogs, cocaine, marijuana, alcohol, PCP, lysergic acid (LSD), and opiates. Gaps in the current knowledge base are identified, and areas ripe for future research efforts are suggested. NEUROSCIENTIST 3:399-411, 1997

Key Words: Drug abuse • Long-term effects • CNS • Amphetamines • Serotonin • Neurotoxicity

The Neuroscientist, Vol. 3, No. 6, 399-411 (1997)
DOI: 10.1177/107385849700300613
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