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NIDA Notes Articles: Addiction Science

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Disruption of Serotonin Contributes to Cocaine’s Effects

February 2019
This research traced the effects of cocaine-induced disruption of serotonin regulation in the ventral pallidum and orbitofrontal cortex. The findings suggest that these effects may contribute to drug-seeking and cocaine-associated cognitive impairments.

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Dr. Antonello Bonci Q & A: Lighting Up the Brain To Shut Down Cocaine Seeking

July 2014
The Scientific Director of NIDA’s Intramural Research Program talks about switching off animals’ compulsive cocaine seeking by optogenetically activating the prefrontal cortex, and the implications of this work for people. In an accompanying podcast, Dr. Bonci walks viewers through experiments that showed that prefrontal cortex activity levels may constitute a simple switch controlling whether or not animals compulsively seek cocaine.

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Dr. Joni Rutter Q&A: How Basic Science Is Tackling Addiction

May 2014
One of NIDA’s goals is to try to understand the individual differences that contribute to whether or not someone who takes a drug will become addicted to it. Dr. Rutter’s research focuses on three types of differences: Environmental, developmental, and genetic and epigenetic.

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EEG Indicates That Cocaine Relapse Vulnerability Peaks 1 to 6 Months Into Abstinence

September 2017
Electroencephalography (EEG) may provide an objective measure of cocaine-addicted participants’ vulnerability to cue-induced relapse. The assessment of cue-induced responsiveness may be useful in the clinical setting for assessing relapse risk and tailoring interventions to maintain abstinence among cocaine-addicted adults. 

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Endocannabinoid Regulates Cocaine Reward

March 2017
Investigators have shown that 2-AG, an endocannabinoid (i.e., a cannabinoid manufactured within the body, as opposed to plant-derived), augments the cocaine-induced dopamine surge in the brain’s reward system. The discovery adds to evidence that inhibiting activity in the endocannabinoid system might reduce cocaine’s rewarding and addictive effects.  

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Gene Transfer Therapy for Cocaine Addiction Passes Tests in Animals

January 2016
Giving mice a modified version of a naturally occurring gene blocks cocaine’s stimulant effects without affecting the animals’ physiological or metabolic health. The new evidence advances the proposed therapy a step closer to readiness for testing in people.

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Gene Variants Reduce Opioid Risks

June 2014
Two recent studies suggest that genotyping may enable clinicians to base therapies on individual patients’ potential responsiveness to opioid drugs’ therapeutic effects and vulnerability to their harmful effects.

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How Cocaine Cues Get Planted in the Brain

September 2018
An epigenetic mechanism underlies the powerful cocaine–environment associations that promote relapse.

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Impacts of Drugs on Neurotransmission

March 2017
Drugs can alter the way people think, feel, and behave by disrupting neurotransmission, the process of communication between brain cells. This article discusses the central importance of studying drugs’ effects on neurotransmission and describes some of the most common experimental methods used in this research.  En Español

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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. En Español

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