Curcumin under human trials for Alzheimer's prevention

- Last updated on GMT

Related tags: Alzheimer, Alzheimer's disease

Curcumin, the yellow pigment in curry spice, is to be investigated
for its potential in prevention of Alzheimer's disease after tests
on mice found it to be more effective than drugs currently being
investigated for treatment.

A dietary staple of India, where Alzheimer's disease rates are reportedly among the world's lowest, curcumin appears to block and break up brain plaques that cause the disease.

The spice has also been found to correct the cystic fibrosis defect in mice, prevent the onset of alcoholic liver disease and may slow down the blood cancer multiple myeloma as well as multiple sclerosis.

Reporting in the 7 December online edition of the Journal of Biological Chemistry​, researchers from the University of California Los Angeles also revealed that curcumin is more effective in inhibiting formation of the protein fragments than many other drugs being tested as Alzheimer's treatments.

The researchers found the low molecular weight and polar structure of curcumin allow it to penetrate the blood-brain barrier effectively and bind to beta amyloid (which form the disease-causing plaques).

In earlier studies published during 2001, the same research team found curcumin has powerful antioxidant and anti-inflammatory properties, which scientists believe help ease Alzheimer's symptoms caused by oxidation and inflammation.

The body of research has prompted the UCLA Alzheimer's Disease Research Center (ADRC) to begin human clinical trials​ to further evaluate its protective and therapeutic effects.

"The prospect of finding a safe and effective new approach to both prevention and treatment of Alzheimer's disease is tremendously exciting,"​ said principal investigator Gregory Cole, professor of medicine and neurology at the David Geffen School of Medicine at UCLA and associate director of the UCLA Alzheimer's Disease Research Center.

"Curcumin has been used for thousands of years as a safe anti-inflammatory in a variety of ailments as part of Indian traditional medicine,"​ Cole added.

"Recent successful studies in animal models support a growing interest in its possible use for diseases of ageing involving oxidative damage and inflammation like Alzheimer's, cancer and heart disease. What we really need, however, are clinical trials to establish safe and effective doses in aging patients."

Alzheimer's disease is the most common form of dementing illness among middle and older adults, affecting more than 4 million Americans and many millions worldwide. The prevalence of Alzheimer's among adults aged 70-79 in India, however, is 4.4 times less than the rate in the United States.

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