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From Medicineworld.org: New Drug Target For Alzheimer's Disease

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New Drug Target For Alzheimer's Disease




New Drug Target For Alzheimer's Disease
Gladstone scientists identify new drug target for Alzheimer's disease.

Scientists at the Gladstone Institute of Neurological Disease have identified a potential new way to stop brain cell death related to Alzheimer's disease.

Working with cell cultures, the researchers investigated how amyloid beta (A?) proteins, which build up in the brain tissue of people with Alzheimer's disease, kill neurons. The cell cultures were established from brain tissue of laboratory rats. Study findings showed that A? could be prevented from causing neuronal cell death with a compound called resveratrol, which is also found as a natural ingredient in red wine.

"Our study suggests that resveratrol and related compounds may protect against neuronal loss associated with Alzheimer's disease," explains senior author Li Gan, PhD, a staff research investigator at the Gladstone Institute of Neurological Disease and an assistant professor of neurology at UC San Francisco. "This could certainly open up new avenues for drug development".

The research results are reported in the December 2 issue of the Journal of Biological Chemistry.

According to the research team, it was especially interesting that the beneficial effect of resveratrol was not due to a direct effect on A? or on neurons but on other types of brain cells, called microglia.

Microglia are the immune cells of the brain. They can protect or hurt neurons, depending on which of their powerful defense or attack pathways are activated. The researchers found that A? triggers a pathway in microglia that makes them attack neurons with poisonous chemicals.

A key mediator in this pathway is a protein called NF?B, which resveratrol happens to block. Without resveratrol, A??activates NF?B in microglia, turning them into powerful neuron killing machines.

Scientists found that, in the presence of resveratrol or of other molecules that blocked NF?B, microglia were well behaved, and A? was unable to harm the neurons.

The study thus pinpoints NF?B as an important contributor to the destructive power of A???making it a key drug target??and it singles out resveratrol as holding the most promise for therapeutic intervention.

Research co-authors are Jennifer Chen, Sarah Mueller-Steiner, and Lennart Mucke of the Gladstone Institute of Neurological Disease and the UCSF Department of Neurology; Yungui Zhou and Saili Yi of the Gladstone Institute of Neurological Disease; and Lin-Feng Chen and Hakju Kwon of the Gladstone Institute of Virology and Immunology.

The research was supported by the Alzheimer's Disease Research Center at UCSF, the McBean Family Foundation, the National Institutes of Health, and the Swiss Science Foundation.

The Gladstone Institute of Neurological Disease is one of three research institutes of The J. David Gladstone Institutes, a private, nonprofit biomedical research institution. It is affiliated with UCSF, a leading university that consistently defines health care worldwide by conducting advanced biomedical research, educating graduate students in the life sciences, and providing complex patient care. For further information, visit Gladstone and UCSF .


Source: University of California, San Francisco


Did you know?
Gladstone scientists identify new drug target for Alzheimer's disease. Scientists at the Gladstone Institute of Neurological Disease have identified a potential new way to stop brain cell death related to Alzheimer's disease. Working with cell cultures, the researchers investigated how amyloid beta (A?) proteins, which build up in the brain tissue of people with Alzheimer's disease, kill neurons. The cell cultures were established from brain tissue of laboratory rats. Study findings showed that A? could be prevented from causing neuronal cell death with a compound called resveratrol, which is also found as a natural ingredient in red wine.

Medicineworld.org: New Drug Target For Alzheimer's Disease

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