Researchers found a protein triggered by rheumatoid arthritis could undo the "tangles" in the brain that are thought to cause Alzheimer's. Memory loss associated with the disease was partially reversed by the protein, GM-CSF, which also lowered the risk of getting the illness.
Scientists at the University of South Florida even found that in some cases the memory impairment was completely reversed after treatment. The protein is commercially available and known as Leukine. As people with rheumatoid arthritis suffer swollen joints, the protein stimulates scavenger cells in the body. In tests on mice, these cells removed deposits left by Alzheimer's in the brain.
Scientists said they were excited by the research, published online in the Journal of Alzheimer’s
Disease. Prof Huntingdon Potter, a molecular medicine expert involved in the study, said yesterday that he hoped the treatment could soon be tested on humans. “Our findings provide a compelling explanation for why rheumatoid arthritis is a negative risk factor for Alzheimer’s disease,” he said.
In the study, scientists used two groups of mice, one healthy and the other genetically modified to develop Alzheimer’s-like symptoms, including memory loss.
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