Caffeine One of Several Compounds That May Protect Against Dementia

August 2, 2017 · Posted in Risk Factors 

cup of coffee

A 2017 article by Yousuf O. Ali and colleagues in the journal Scientific Reports finds that 24 different compounds may boost a brain enzyme that protects against dementia. The enzyme, NMNAT2, protects neurons from stress and combats misfolded proteins called tau that form plaques in the brain as people age.

Ali and colleagues screened 1280 compounds to identify those that might increase NMNAT2 production. Twenty-four of these looked promising, including caffeine and rolipram, an “orphaned drug” once studied as an antidepressant but discontinued in the 1990s. Others with weaker effects on NMNAT2 production included the atypical antipsychotic ziprasidone, cantharidin (a wart-removing substance secreted by blister beetles), fungal metabolite wortmannin, and retinoic acid, a vitamin A derivative. Thirteen of the compounds tested decreased NMNAT2 production.

The researchers followed up the caffeine finding by testing caffeine in mice genetically engineered to produce less NMNAT2. The caffeine administration normalized NMNAT2 production levels in these mice.

Senior researcher Hui-Chen Lu hopes this research will lead to the development of new drugs that can create a chemical blockade against the effects of neurodegenerative illnesses.

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