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NIDA Notes Articles: Ciencia de la adicción

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Stress Hormone Sets the Stage for Relapse to Cocaine Use

junio del 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.

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Animal Study Suggests Marijuana May Affect Future Offspring’s Susceptibility to Heroin

febrero del 2015

Can marijuana use put offspring at heightened risk for opiate addiction, even if the use stops before the offspring are conceived? Results from a recent NIDA-funded study are consistent with other studies suggesting that a parent’s history of drug use, even preconception, may affect a child’s brain function and behavior.

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Waletzky Memorial Award Winners’ Lectures at NIDA Illuminate Cocaine’s Many Effects on Brain Structure, Circuitry

enero del 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.”

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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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