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Diabetes drug alleviates anxiety in mice

Diabetes drug alleviates anxiety in mice
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Diabetes drug alleviates anxiety in mice

Jun 03, 2019

Source: Society for Neuroscience

The antidiabetic medication metformin reduces anxiety-like behaviors in male mice by increasing serotonin availability in the brain, according to a study published in JNeurosci. These findings could have implications for the treatment of patients with both metabolic and mental disorders.

People with diabetes have an increased risk for mood disorders such as depression. Although the mechanisms underlying the relationship between insulin resistance — the precursor to diabetes — and depression are not known, studies suggest the neurotransmitter serotonin may be the culprit.

In mice raised on a high fat diet, Bruno Guiard and colleagues demonstrate that the insulin-sensitizing drug metformin reduces levels of amino acids that impair the entry of tryptophan in the brain and thereby limit its conversion into serotonin. The drug’s antidepressant-like effects were accompanied…

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