Dr. Nicolas Bazan, Director of the Neuroscience Center of
Excellence, Boyd Professor, and Ernest C. and Yvette C. Villere
Chair of Retinal Degenerative Diseases Research at LSU Health
Sciences Center New Orleans, will present new research findings
showing that an omega three fatty acid in the diet protects
brain cells by preventing the misfolding of a protein resulting
from a gene mutation in neurodegenerative diseases like
Parkinson's and Huntington's.
He will present these findings for the first time on April
19, 2009 at the Ernest N. Morial Convention Center, Nouvelle
C Room, at the American Society for Nutrition, Experimental
Biology 2009 Annual Meeting.
With funding from the National Eye Institute of the National
Institutes of Health, Dr. Bazan and his colleagues developed
a cell model with a mutation of the Ataxin-1 gene. The defective
Ataxin-1 gene induces the misfolding of the protein produced
by the gene. These misshapened proteins cannot be properly
processed by the cell machinery, resulting in tangled clumps
of toxic protein that eventually kill the cell. Spinocerebellar
Ataxia, a disabling disorder that affects speech, eye movement,
and hand coordination at early ages of life, is one disorder
resulting from the Ataxin-1 misfolding defect. The research
team led by Dr. Bazan found that the omega three fatty acid,
docosahexaenoic acid (DHA), protects cells from this defect.
Dr. Bazan's laboratory discovered earlier that neuroprotectin
D1 (NPD1), a naturally-occurring molecule in the human brain
that is derived from DHA also promotes brain cell survival.
In this system NPD1 is capable of rescue the dying cells with
the pathological type of Ataxin-1, keeping their integrity
intact.
"These experiments provide proof of principle that neuroprotectin
D1 can be applied therapeutically to combat various neurodegenerative
diseases," says Dr. Bazan. "Furthermore, this study
provides the basis of new therapeutic approaches to manipulate
retinal pigment epithelial cells to be used as a source of
NPD1 to treat patients with disorders characterized by this
mutation like Parkinson's, Retinitis Pigmentosa and some forms
of Alzheimer's Disease."