September 2015 In mice, a cocaine-induced imbalance in the activity of two key populations of neurons in the reward system persists for a longer period after repeated exposure to the drug. For long-term users, this change could both weaken the cocaine “high” and strengthen the compulsion to seek the drug.
Researchers monitored the activity of two types of neurons in mice: “urge” neurons, which promote feelings of reward and repeating behaviors that have produced rewards, and “control” neurons, which dampen those feelings and inhibit behavior.
January 2015 Dr. Paul E. M. Phillips spoke on “Phasic Dopamine Transmission During Substance Abuse,” describing investigations that he has led into the role of brief, seconds-long bursts of dopamine signaling in addictive processes. Dr. Rita Z. Goldstein spoke on “Targeting the Brain, Cognition, and Motivation for Intervention in Addiction.”
July 2015 A can-do attitude, ability to cope with potential triggers for drug use, readiness to change, and participation in self-help programs are major assets for people trying to recover from cocaine addiction.
June 2015 A stressed rat will seek a dose of cocaine that is too weak to motivate an unstressed rat. Researchers traced the physiological pathway that links stress and the stress hormone corticosterone to increased dopamine activity and heightened responsiveness to cocaine.
August 2016 Treatment with an extended-release stimulant medication plus cognitive behavioral therapy was associated with reductions in cocaine use and in attention-deficit/hyperactivity disorder symptoms in patients with both disorders.
February 2016 The protein acid-sensing ion channel 1A (ASIC1A) is naturally present in the brain and reduces laboratory animals' attraction to environments in which they have experienced cocaine's effects.
January 2014 Researchers have shut down laboratory rats’ compulsive cocaine seeking by stimulating an area of the animals’ prefrontal cortex. The finding raises the possibility that stimulating neurons in this brain area may weaken or break cocaine’s grip on the behavior of people who are addicted to the drug.