Reports study results suggesting that genes for several acetylcholine receptor proteins influence early smoking responses and the likelihood of nicotine dependence.
Reports findings that a rare neuroreceptor may be linked to the intensive cravings cocaine abusers experience during their first weeks of abstinence.
Describes an animal study showing that rats raised in isolation may prove useful in future studies exploring the neurobiology that links impulsivity and vulnerability to addiction.
Reports an animal study presenting evidence that cocaine causes cognitive deficits that can persist well into abstinence.
Highlights findings from a study showing that nicotine triggers a surge in levels of the neurotransmitter dopamine in the brain's main reward area for cigarette smokers.
Describes research providing evidence that chronic methamphetamine abuse is associated with increased microglial cell activity in the brain leading to neurodegeneration.
Describes study findings revealing that the act of smoking, apart from actual or expected nicotine delivery, may soothe a smoker's negative mood.
Reports on an animal study suggesting that the manic stage of bipolar disorder promotes signs of drug abuse vulnerability by enhancing sensitivity to rewards, both natural and drug-related.
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.
Reports on a discovery of previously unrecognized dopamine receptors in the brain that when triggered by drug abuse lead to potentially long-term neuronal effects.