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Cheaper, more effective treatment of type 1 Gaucher disease possible
Date:10/19/2010

Researchers at Yale School of Medicine have found that new disease pathways involving more than one cell type leads to Type 1 Gaucher disease, a rare genetic disorder in which fatty substances called glycosphingolipids accumulate in cells, resulting in liver/spleen enlargement, osteoporosis, bone pain, and increased risk of cancer and Parkinson's disease.

The new findings could lead to less expensive and more effective ways to treat the disorder, which affects about 1 in 50,000 people in the general population. Those of Eastern and Central European (Ashkenazi) Jewish heritage are at highest risk for the disease, with 1 in 750 affected. The results are published in the October 18 issue of Proceedings of the National Academy of Sciences.

Treatment for Type 1 Gaucher diseasethe type that does not cause a rare and fatal neurodegenerative childhood diseaseinvolves expensive recombinant enzyme infusions every two weeks for life, which on average cost $200,000 per year. Gaucher disease symptoms are unpredictable, even among affected siblings. "In order to tailor treatment to individuals, we need an improved understanding of the disease mechanisms," said senior author of the study, Pramod Mistry, M.D., professor of pediatrics and internal medicine at Yale School of Medicine.

For almost 20 years, investigators around the world have tried and failed to develop mouse models of Type 1 Gaucher disease that replicate the human disease faithfully. Mistry and his team were able to develop a mouse model that replicates all of the features of the human disease.

It was previously thought that the disease affects only one cell type in the body called macrophages. "In our study we show that all cell types are involved and lipids that accumulate trigger abnormal signaling resulting in the malfunction of many cell types," said Mistry. "This helps explain aspects of the disease, such as osteoporosis, cancer risk, and risk of Parkinson
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Contact: Karen N. Peart
karen.peart@yale.edu
203-432-1326
Yale University
Source:Eurekalert  

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