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NIDA Notes Articles: Basic Science

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Marker for Neuronal Damage Resolves a Year after Methamphetamine

December 2011

New results extend previous findings that some methamphetamine-induced neuronal damage resolves after a year of abstinence.

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Methamphetamine Abuse Alters Response to Facial Cues

October 2009

Highlights research showing methamphetamine abusers may have more difficulty than nonabusers in responding with empathy and self-control to people who are experiencing intense emotions.

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Methamphetamine Abusers Show Increased Distractibility

April 2009

Highlights findings from a study of former methamphetamine abusers showing evidence of impairment in areas of the brain known to influence cognition, emotion, and decision making.

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Methamphetamine Alters Brain Structures, Impairs Mental Flexibility

March 2014

Methamphetamine alters brain structures involved in decision-making and impairs the ability to suppress habitual behaviors that have become useless or counterproductive. The two effects were correlated, indicating that the structural change underlies the decline in mental flexibility.

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Methamphetamine Restricts Fetal Growth, Increases Lethargy in Newborns

June 2008

Reports on research showing that newborns whose mothers abused methamphetamine during pregnancy showed lower rates of fetal growth as compared with unexposed newborns.

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Methamphetamine Turns Helper Cells Into Destroyers

November 2009

Describes research providing evidence that chronic methamphetamine abuse is associated with increased microglial cell activity in the brain leading to neurodegeneration.

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Mice With Genetic Alteration Eschew Cocaine

June 2008

Reports on a study involving researchers who successfully desensitized mice to cocaine by genetically altering their dopamine transporters.

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Molecular Alterations of DNA Contribute to Persistence of Memory

November 2011
In a new series of studies tracing the molecular events that occur in the brain as memories are formed and preserved, researchers find that certain epigenetic changes may promote vulnerability to relapse.

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Morphine-Induced Immunosuppression, From Brain to Spleen

June 2008

Reports on scientists who pinpointed the biochemical trigger from morphine that sets off a chain reaction that inhibits an immune cell that is key in fighting viruses and cancer.

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Neuropeptide Promotes Behaviors Tied to Addiction and Overeating

July 2011

Reports on several studies implicating a certain neuropeptide (a signaling molecule) in fostering addition and overeating and discusses implications for addiction treatment.

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