March 2008 Describes a new chemical tracer that binds specifically to cannabinoid receptors making it potentially useful in future research to clarify the relationship between the receptors and drug abuse.
March 2008 Reports on research showing that the neurons that deliver dopamine to two regions of the brain's mesolimbic reward system respond differently to opioids, an important finding for drug treatment research.
April 2009 Describes findings from an animal study showing that cocaine lowers availability of dopamine receptors in the basal ganglia, an area of the brain that includes portions of the reward system.
April 2010 Describes a literature analysis reporting on the prevalence of people with bipolar disorder who also have a substance use disorder and discusses the genetic link that may contribute to this comorbidity.
April 2010 Describes an animal study reporting that peer interaction enhances adolescent rats’ drug reward and discusses the impact of these findings to future research on drug reward in social context.