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NIDA Notes Articles: Ciencia de la adicción

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Animation: The Rise and Fall of the Cocaine High

noviembre del 2014

This animation shows the rapid passage of cocaine through the brain. It demonstrates that the intensity of the cocaine “high” parallels the trajectory of cocaine levels in the brain.

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A Genetic Nexus of Obesity and Smoking

octubre del 2014

Research shows that some gene variants that influence body mass index also shape smoking behaviors.

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Student-Scientists Present Award-Winning Research at NIDA

agosto del 2014

Four high school students were honored for their work regarding e-cigarettes, the GABAA neuroreceptor, and adolescent multitasking.

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

julio del 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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Gene Variants Reduce Opioid Risks

junio del 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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New Insight Into How Cues Cause Relapse to Cocaine

mayo del 2014

A brain response occurs in the nucleus accumbens when rats encounter a cue that they associate with previous cocaine self-administration, but not a cue associated with a pleasurable non-drug experience. Moreover, the response correlates in time and intensity with the animals’ cue-induced relapse to cocaine-seeking.

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

mayo del 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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Methamphetamine Alters Brain Structures, Impairs Mental Flexibility

Marzo del 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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Stress-Induced Enzyme Compounds Methamphetamine Neurotoxicity

enero del 2014

Ketoprofen, an anti-inflammatory agent commonly prescribed to treat arthritis, reduces neuronal damage in rats that have been exposed to chronic stress and methamphetamine. If this finding of a recent NIDA-supported study extrapolates to humans, anti-inflammatory medications may gain a place in the treatment of methamphetamine addiction.

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Prefrontal Cortex Stimulation Stops Compulsive Drug Seeking in Rats

enero del 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.

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