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NIDA Notes Articles: Estimulantes

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Brain Adaptation May Dampen Effects of Cocaine

octubre del 2010
Reports evidence that a cocaine-induced change in the structure of brain cells represents an adaptive response that may limit the drug’s impact.

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Brain Opioid Receptor Levels Predict Time to Cocaine Relapse

octubre del 2010
Describes study findings revealing that cocaine abusers who maintain high levels of a certain receptor in their brain during early abstinence relapse sooner than abusers whose levels drop.

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Crack Cocaine Promotes Progression of HIV Infection to AIDS

octubre del 2010
Reports on two studies showing a high prevalence of HIV infection and more rapid progression to disability and death among drug abusers.

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Stroop Test Identifies Patients at Risk for Treatment Dropout

abril del 2010
Reports on a study of cocaine abusers revealing that the Stroop test may predict which cocaine abusers are likely to drop out of therapy.

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Recovery May Be Harder for Adolescents, Animal Study Suggests

diciembre del 2009

Reports animal study findings that suggest adolescents' heightened sensitivity to drug reward puts them at enhanced risk of addiction and may also increase their challenges in recovery.

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Test Substance Attenuates Signs of Cocaine Withdrawal in Rats

diciembre del 2009

Reports on several drugs that may ward off depression and anxiety, common withdrawal symptoms from cocaine, based on an animal study.

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Rare Glutamate Receptor Proliferates After Cocaine Withdrawal

diciembre del 2009

Reports findings that a rare neuroreceptor may be linked to the intensive cravings cocaine abusers experience during their first weeks of abstinence.

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Extended Cocaine Exposure Impairs Cognitive Function in Rats

noviembre del 2009

Reports an animal study presenting evidence that cocaine causes cognitive deficits that can persist well into abstinence.

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Methadone Therapy in Prison Benefits Men a Year Out

noviembre del 2009

Describes clinical trial results providing evidence that methadone maintenance to men in prison can pay off in better retention in community treatment and reduced drug abuse following their release.

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Cocaine Locks Rats Into Unrewarding Behaviors

abril del 2009

Describes research with rats to better understand cocaine’s effect on the neural signaling in the learning circuits of the brain.

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Toma el reto nacional sobre el coeficiente intelectual (CI) sobre las drogas