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Clinical

Diabetes drug may also treat nicotine withdrawal symptoms

Staff Writer
Staff Writer 4 years ago
Updated 2019/09/07 at 6:21 PM
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As cigarette smoking continues to be the leading cause of preventable death in the US, as recent CDC estimates show, researchers have focused on tackling the biggest factor preventing smokers from quitting: nicotine withdrawal symptoms.

In a study, conducted at the University of Pennsylvania and Johns Hopkins University School of Medicine, researchers found that administering metformin — a first-line drug treatment for type-2 diabetes — may also lessen the symptoms of nicotine withdrawal. The results were published in the journal PNAS.

The team of researchers examined the relationship between the AMP-activated protein kinase (AMPK) and withdrawal symptoms following chronic nicotine use. The AMPK pathway located in the hippocampus is activated after prolonged use of nicotine, however, the effect can be quickly reversed during nicotine withdrawal.

“Increasing pAMPK levels and, consequently, downstream AMPK signaling pharmacologically attenuate anxiety-like behavior following nicotine withdrawal. We show that metformin, a known AMPK activator in the periphery, reduces withdrawal symptoms through a mechanism dependent on the presence of the AMPKα subunits within the hippocampus,” the findings say.

According to the findings, the drug metaformin caused a complete absence of withdrawal symptoms after having been administered to laboratory rodents following two weeks of exposure to nicotine.

“One week of systemic metformin pretreatment resulted in activation of the AMPK pathway following nicotine withdrawal compared with saline-pretreated animals. Strikingly, systemic metformin also completely prevented anxiety-like behaviors caused by nicotine withdrawal at a dose that did not impact body weight, food consumption, or glucose levels under both fed and fasted conditions.”

The results of the study point researchers to a potential new therapeutic target for nicotine cessation, given the preclinical efficacy of metaformin.

“Based on our findings demonstrating the preclinical efficacy of metformin in alleviating anxiety-like behavior following nicotine withdrawal, we propose that AMPK activation in the brain via metformin can be repurposed as a novel pharmacotherapy for nicotine cessation.”

Researchers believe metaformin could have the potential to be a useful treatment for nicotine smokers if clinical trials can prove the drug’s efficacy as demonstrated in this study.

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TAGGED: diabetes, metformin, smoking
Staff Writer April 9, 2018
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Previous Article Dutch study explored the effects of urban popular music on young adult smoking
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