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A class of medication used to improve cognitive impairments from Alzheimer\'s disease has the potential to help smokers to permanently kick the butt. Despite several safe drug therapies available to help smokers quit, three-quarters report relapsing within six months of a quit attempt, the study pointed out.
A class of medication used to improve cognitive impairments from Alzheimer's disease has the potential to help smokers to permanently kick the butt. Despite several safe drug therapies available to help smokers quit, three-quarters report relapsing within six months of a quit attempt, the study pointed out.
In a study consisting of a rat trial and a human trial, the researchers studied the effects of two acetylcholinesterase inhibitors, or AChEIs, called galantamine and donepezil on overall nicotine intake. The researchers found that pretreating the rodents with an AChEI decreased their nicotine consumption.
For both drugs “we were able to show a reduction in total nicotine self-administered," said one of the researchers Rebecca Ashare, University of Pennsylvania in the US. "At the doses shown to reduce nicotine self-administration, the AChEIs did not make our animals sick," Schmidt noted.
The findings sparked the clinical trial, which has to date studied 33 smokers ages 18 to 60. People who were interested in quitting smoking signed on for 23 days. Clinical trial participants taking the AChEI, not the placebo, smoked 2.3 fewer cigarettes daily, a 12 per cent decrease for seven straight day, and noted feeling less satisfied with the cigarettes they did smoke.
The findings are promising, particularly given that those who do not smoke during that first crucial week are 32 times more likely to quit smoking permanently, the researchers said. In the brain, the neurotransmitter called acetylcholine is important to cognitive functions like learning and short-term memory.
When nicotine enters the body, it binds to the same receptors in the brain that acetylcholine binds to, resulting in smoking's rewarding and reinforcement effects. Acetylcholinesterase inhibitors increase acetylcholine levels in the brain and, in effect, substitute nicotine's effects, the study explained.
(The findings were detailed in the journal Translational Psychiatry.)
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