Could a Diabetes Drug Reduce Cognitive Impairment?- The LANC
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Diabetes is an independent risk factor for cognitive impairment. We aimed to investigate the association between the glucagon-like peptide-1 (GLP-1) receptor agonist dulaglutide and cognitive impairment as an exploratory analysis within the Researching Cardiovascular Events With a Weekly Incretin in Diabetes (REWIND) trial.

REWIND is a randomised, double-blind placebo-controlled trial at 371 sites in 24 countries. It included men and women (aged ?50 years) with either established or newly diagnosed T2D and additional CV risk factors, glycated haemoglobin of up to 9·5% on a maximum of two oral glucose-lowering drugs with or without basal insulin, and a BMI of at least 23 kg/m square. Participants were randomly assigned (1:1) subcutaneous injections once a week of either dulaglutide (1·5 mg) or an equal volume of matching placebo.

Between Aug 18, 2011, and Aug 14, 2013, 9901 participants were randomly assigned to either dulaglutide (n=4949) or placebo (n=4952). During median follow-up of 5·4 years, 8828 participants provided a baseline and one or more follow-up MoCA or DSST scores, of whom 4456 were assigned dulaglutide and 4372 were assigned placebo. The cognitive outcome occurred in 4·05 per 100 patient-years in participants assigned dulaglutide and 4·35 per 100 patient-years in people assigned placebo. After post-hoc adjustment for individual standardised baseline scores, the hazard of substantive cognitive impairment was reduced by 14% in those assigned dulaglutide.

Conclusively, Long-term treatment with dulaglutide might reduce cognitive impairment in people with type 2 diabetes. Further studies of this drug focused on brain health and cognitive function are clearly indicated.

Source: https://www.thelancet.com/journals/laneur/article/PIIS1474-4422(20)30173-3/fulltext
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