En español
NIDA

Menu

NIDA Notes Articles: Basic Science

NIDA Notes Category Graphic

Nicotine Makes Mouse Brain More Responsive to Cocaine

February 2013

Nicotine sensitizes the mouse brain to the addictive effects of cocaine, according to recent NIDA-supported research. The results accord with the hypothesis that a person’s initial use of an addictive substance physiologically sensitizes his or her brain to the rewarding and addictive effects of other substances. If the findings carry over to people, then preventing youths from smoking might reduce their vulnerability to cocaine abuse and addiction, and cocaine-dependent individuals might ease their path to recovery by quitting smoking.

NIDA Notes Category Graphic

Nicotine Boosts Mood, Brain Dopamine Levels

November 2009

Highlights findings from a study showing that nicotine triggers a surge in levels of the neurotransmitter dopamine in the brain's main reward area for cigarette smokers.

NIDA Notes Category Graphic

New Tracer for Nicotinic Receptors Promises Improved Specificity

April 2009

Reports on NIDA researchers who developed a new tracer compound that binds readily to nicotine receptors and enhances positron emission tomography images.

NIDA Notes Category Graphic

New Technique Links 89 Genes to Drug Dependence

September 2008

Presents research findings linking 89 genes to drug abuse and dependence, found using genome-wide association studies, a new technique for identifying genes.

NIDA Notes Category Graphic

New Method Uncovers How Internal States Influence the Living Brain to Change Behavior

March 2012
In an innovative NIDA-funded study, published in Cell, scientists introduced a modified dopamine receptor gene into the brain of a living vinegar fly

NIDA Notes Category Graphic

New Insight Into How Cues Cause Relapse to Cocaine

May 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.

NIDA Notes Category Graphic

New Class of Regulators for Addiction Genes

November 2011
New studies show that microRNAs, snippets of RNA implicated in a wide variety of biological processes, are involved in promoting and inhibiting cocaine addiction. The findings could pave a new path for the development of anti-addiction therapies.

NIDA Notes Category Graphic

Neuropeptide Promotes Behaviors Tied to Addiction and Overeating

July 2011

Reports on several studies implicating a certain neuropeptide (a signaling molecule) in fostering addition and overeating and discusses implications for addiction treatment.

NIDA Notes Category Graphic

Morphine-Induced Immunosuppression, From Brain to Spleen

June 2008

Reports on scientists who pinpointed the biochemical trigger from morphine that sets off a chain reaction that inhibits an immune cell that is key in fighting viruses and cancer.

NIDA Notes Category Graphic

Molecular Alterations of DNA Contribute to Persistence of Memory

November 2011
In a new series of studies tracing the molecular events that occur in the brain as memories are formed and preserved, researchers find that certain epigenetic changes may promote vulnerability to relapse.

Pages

NIDA Notes

Tags

Drug Topics

Drugs of Abuse

Population Groups

Related Topics