From the monthly archives:

July 2010

sciene

Researchers at the Massachusetts Institute of Technology (MIT) have conducted a study in mice that shows a promising new way to treat Alzheimer’s, Parkinson’s and Huntington’s Disease. The study focused on the role that Sirtuin, a protein in the body. played in neurodegenerative diseases.  What they found was activating sirtuin suppressed the disease and that destroying sirtuin made the disease much worse.

Sirtuin – The Longevity Protein and Key to Health?

In our article on Resveratrol Health Benefits we define and explain Sirtuin .  The Sirtuin gene has been shown to have some strong possible connections with longevity and health.  In our discussion on Resveratrol we focus on its ability to increase Sirtuin 1 (SIRT1), but there are 7 different Sirtuin genes in the body.  This research shows that stimulating Sirtuin production can have significant health benefits.

Gizem Donmez and Leonard Guarente of MIT were able to modify mice to make them more prone to developing Alzheimer’s disease.  They then activated sirtuin in one group and saw that the progression of Alzheimer’s was suppressed.  A second set of mice had their sirtuin destroyed and the Alzheimer’s progressed at a much faster pace.

Does This Mean Resveratrol Supplements Can Fight Alzheimer?

No.  We know some resveratrol companies will now start claiming that resveratrol can stop Alzheimer’s, and that would not be accurate.

Researchers not involved in the study agreed. “We think it is a scientifically compelling story that ties the sirtuins to the biology of Alzheimer’s disease,” said Dr. Dennis J. Selkoe, an Alzheimer’s expert at Harvard Medical School. But the therapeutic implications, Dr. Selkoe added, “remain quite up in the air.”

-Potential Found in a New Approach to Alzheimer’s, New York Times,  7/23/10

One problem is that resveratrol does not pass the blood-brain barrier at this time, so this study could not be replicated with resveratrol.  In addition, the study was done with mice and not humans.

Sirtuin Research – A Field to Watch

We believe it is an exciting time for Sirtuin Research.  Much more research has to be done, but the idea of activating Sirtuin to reduce disease risk is an area that should be actively explored.

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We all know about the mythical “beer goggles” – where you drink too much and suddenly all types of people start to look attractive.  Well, beer may not give you super vision, but drinking a lot of wine could do the trick!

New Study Shows Resveratrol May Help Prevent Vision Loss

A new study done at Washington University School of Medicine in St. Louis says that resveratrol – a compound found in muscadine grapes, red grapes and resveratrol supplements – may prove useful in preventing the vision loss associated with diabetes and old age.

The study, which was conducted on mice, found that resveratrol may help prevent out of control blood vessel growth in the eye.  The extra blood vessel growth is angiogenesis, and if you can keep angiogenesis in check you can keep some of the most serious vision disorders in check.

What Causes Blindness and Vision Loss

Macular degeneration, the leading cause of blindness in people over 50, is caused by out of control blood vessel growth.  The ability for resveratrol to stop this blood vessel growth could have major implications.  In addition, the study shows that resveratrol may also help with diabetic retinopathy, a disease that causes vision loss in about 20 percent of people with diabetes, and retinopathy of prematurity, a condition that strikes some premature babies.

“This could potentially be a preventive therapy in high-risk patients,” said Rajendra S. Apte, MD, PhD – researcher for the study.  Dr. Apte also cautions there is much more work to be done and this study was done with mice, not humans, but it is a promising start.

Read the Full Study on Resveratrol and Vision Loss

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