Scientists at the University of Michigan Medical School have discovered a gene called NPHP5 and found mutations in this gene that cause a rare genetic disease called Senior-Loken syndrome. Children with this syndrome develop a type of cystic kidney disease called nephronophthisis*, as well as a form of blindness called retinitis pigmentosa.
In both the eye and the kidney, U-M scientists found that mutations in NPHP5 produced defects in hair-like cellular structures called cilia, which serve as sensory devices throughout the body. Researchers are interested in cilia, because they may play an important role in diseases ranging from diabetes to Alzheimers.
News of the discovery is published in the March 2005 issue of Nature Genetics. Edgar A. Otto, Ph.D., a U-M research investigator, is first author of the paper. "It seems that defective ciliary proteins can lead to disease in virtually all organ systems," says Friedhelm Hildebrandt, M.D., the U-Ms Frederick G.L. Huetwell Professor for the Cure and Prevention of Birth Defects, who directed the research. "Just as defective cilia in kidney tubules underlie kidney disease, defective cilia in the light-sensitive portion of the eye cause retinitis pigmentosa."
Sally Pobojewski | EurekAlert!
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