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An ALS Drug Shows Early Promise Against Alzheimer's

HealthDay News
by Robert Preidt
Updated: Aug 2nd 2021

new article illustration

MONDAY, Aug. 2, 2021 (HealthDay News) -- Could a drug used to treat amyotrophic lateral sclerosis (ALS) help people with mild Alzheimer's disease?

The results of a small new study suggest the strategy could work.

Riluzole has been used for more than 20 years to slow the progression of ALS, commonly called Lou Gehrig's disease. This phase 2 study found that the drug slowed brain metabolic decline and had a positive effect on cognition in people with mild Alzheimer's.

It included 50 patients ages 50 to 90 who received either the drug (26) or a placebo (24) twice daily for six months.

"Using two types of brain scans as biomarkers -- this study was able to measure improvements in brain metabolism among treated patients and correlate those improvements with cognitive changes and disease progression," said study co-author Dr. Howard Fillit, founding executive director and chief science officer of the Alzheimer's Drug Discovery Foundation.

"It is a repurposed drug, which helps speed the research process. It targets an important and understudied biological mechanism that goes awry with aging, and the rigorous design of this trial measured both biomarker and clinical outcomes," Fillit noted in a foundation news release.

Riluzole targets a neurotransmitter in the brain called glutamate, which plays a crucial role in the ability of nerve cells to send signals to one another. Glutamate dysregulation is believed to start a cycle of toxicity involved in Alzheimer's disease, the researchers said.

The study found significant changes in glutamate levels in patients who received the drug. Rates of adverse events were the same among patients who took riluzole and those who took the placebo.

The results were recently published online in the journal Brain.

These findings support a phase 3 trial with larger numbers of patients followed for a longer period of time to further assess the safety and efficacy of the drug in Alzheimer's patients, said lead investigator Dr. Ana Pereira, assistant professor of neurology and neuroscience at the Icahn School of Medicine at Mount Sinai in New York City.

More information

The Alzheimer's Association has more on Alzheimer's disease.

SOURCE: Alzheimer's Drug Discovery Foundation, news release, July 28, 2021