What is MPS II?
MPS II is a mucopolysaccharide disease known as Hunter syndrome. It takes its name from Charles Hunter, the professor of medicine in Manitoba, Canada, who first described two brothers with the disease in 1917. MPS II has a wide range of symptoms that vary in severity and can be managed and treated with enzyme replacement therapies. There is no cure for MPS II.
What Causes This Disease?
Mucopolysaccharides are chains of sugar molecules used to build connective tissues in the body.
“muco” refers to the thick jelly-like consistency of the molecules
“poly” means many
“saccharide” is a general term for a sugar molecule
The body constantly replaces used materials and breaks them down for disposal. MPS II patients are missing the enzyme iduronate sulfatase, which is essential to breaking down the mucopolysaccharides dermatan and heparan sulphate. These materials remain stored in the body’s cells, causing progressive damage. Babies may show little sign of the disease, but as cells sustain damage, symptoms start to appear.
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