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Alcohol / Addiction / Illegal Drugs News From Medical News Today
Latest Alcohol / Addiction / Illegal Drugs News From Medical News Today.
08/28/2008
Scientists' Findings May Lead To New Drug-Abuse Treatments
Increased connections among brain cells caused by excessive drug use may represent the body's defense mechanism to combat addiction and related behaviors, scientists at UT Southwestern Medical Center have found. Previous studies have shown that repeated use of drugs such as cocaine, amphetamines and nicotine increase the number of anatomical structures called dendritic spines in brain regions associated with pleasure and reward.
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08/28/2008
Use Of Opioids Studied
Researchers from Boston University's Slone Epidemiology Center have found that in a given week, over 10 million Americans are taking opioids, and more than 4 million are taking them regularly (at least five days per week, for at least four weeks). These findings appear in the August 31 issue of the journal Pain. Opioids are commonly administered for the treatment of moderate to severe pain and are among the most widely prescribed drugs in the United States.
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08/28/2008
News From The Journal Of Neuroscience
1. A New Striatal Microcircuit Matthew A. Sullivan, Huanmian Chen, and Hitoshi Morikawa Cholinergic neurons in the striatum generally fire tonically, but stop firing briefly when the animal receives a reward. The physiological mechanisms responsible for these pauses, which are thought to be important for associative learning, are not clear. This week, Sullivan et al. describe a novel striatal microcircuit that may contribute to pausing.
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08/28/2008
Smoking Study May Explain Why We Have Trouble Quitting
A new study from researchers at the University of Pittsburgh and Carnegie Mellon University sheds light on why smokers' intentions to quit "cold turkey" often fizzle out within days or even hours. If a smoker isn't yearning for a cigarette when he makes the decision to kick the habit-and most aren't-he isn't able to foresee how he will feel when he's in need of a nicotine buzz.
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