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Avoiding Spleen Removal for Cooley's Anemia SufferersAvoiding spleen removal for Cooley's anemia suf
Date:5/27/2008

NEW YORK (MAY 27, 2008) -- Researchers from Weill Cornell Medical College may have discovered the precise role of a gene in one of the world's most common blood disorders, beta-thalassemia, commonly known as Cooley's anemia. Along with sickle-cell anemia, Cooley's anemia is the most commonly inherited disease in the world, affecting many people of Mediterranean descent, and 20 out of every 100,000 African-Americans. The World Health Organization estimates that between 50,000-100,000 children are born with the disease each year.

The research is published in the latest online issue of the journal Blood, the official publication of the American Society of Hematology (ASH).

In Cooley's anemia, hemoglobin -- the oxygen-carrying molecule on red blood cells -- is mutated and non-functioning, resulting in a low red-blood-cell count. Common symptoms of the disease include fatigue, shortness of breath and an enlarged spleen, called splenomegaly, caused by a buildup of malformed red blood cells within the body. The spleen works to filter out these unhealthy cells in order to protect the body from harm, such as in a stroke, but eventually the spleen becomes over-stuffed and is commonly surgically removed (splenectomy) in order to prevent a potentially fatal burst. Unfortunately, after the spleen is removed, patients are at a much greater risk for stroke and infections.

Dr. Stefano Rivella, the study's senior author and assistant professor of genetic medicine in pediatrics at Weill Cornell Medical College, in New York City, believes that he and his collaborators may have found a way around splenectomy. After giving mice with Cooley's a compound called JAK2 inhibitor, the researchers found that the mice's spleens shrunk to normal sizes, and they began to produce normal red blood cells. The chemical (a similar compound is already in a Phase I clinical trial for myelodysplastic syndromes -- another blood disorder) blocks the activity of the JAK2 ge
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Contact: Andrew Klein
ank2017@med.cornell.edu
212-821-0560
New York- Presbyterian Hospital/Weill Cornell Medical Center/Weill Cornell Medical College
Source:Eurekalert

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