Study Shows Viagra Promise in Alzheimer’s
A Cleveland Clinic study says sildenafil (Viatris’ Viagra for treating erectile dysfunction and Revatio for treating pulmonary hypertension) is a promising drug candidate to help prevent and treat Alzheimer’s disease. Findings published by the Cleveland Clinic’s Genomic Medicine Institute in Nature Aging said researchers used computational methodology to screen and validate FDA-approved drugs as potential therapies for Alzheimer’s disease.
They found that sildenafil is associated with a 69% reduced incidence of Alzheimer’s disease, indicating the need for follow-up clinical testing of the drug’s efficacy in patients with the disease, they say.
“Notably,” said lead researcher Feixiong Chang, “we found that sildenafil use reduced the likelihood of Alzheimer’s in individuals with coronary artery disease, hypertension, and Type 2 diabetes, all of which are comorbidities significantly associated with risk of the disease, as well as in those without.”
To further explore the drug’s effect on Alzheimer’s, the researchers developed an Alzheimer’s patient-derived brain cell model using stem cells. In the model, they say, they found that sildenafil increased brain cell growth and decreased hyperphosphorylation of tau proteins, a hallmark that leads to neurofibrillary tangles, offering biological insights into how sildenafil may influence disease-related brain changes.
The researchers say they are planning a mechanistic trial and Phase 2 clinical trial to test causality and confirm sildenafil’s clinical benefits for Alzheimer’s patients.