Lysosomal Free Sialic Acid Storage Disorders
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Lysosomal Free Sialic Acid Storage Disorders is not the name you expected.
- Salla disease
- intermediate Salla disease
- infantile free sialic acid storage disease (ISSD)
Free sialic acid storage disorders are a group of related disorders characterized by the abnormal accumulation of sialic acid in various cells and tissues of the body. These disorders are generally broken down into three subtypes: infantile free sialic acid storage disease (ISSD), the most severe form; Salla disease, the mildest form; and intermediate Salla disease which is less severe than ISSD, but more serious than Salla disease. The specific symptoms associated with these disorders can vary greatly. All the disorders are characterized by some degree of degeneration of nerve cells (neurodegeneration) and cognitive impairment. Free sialic acid storage disorders occur because of mutations of the SLC17A5 gene and are inherited in an autosomal recessive fashion.
Free sialic acid storage disorders belong to a larger group of disorders known as lysosomal storage disorders. Lysosomes are membrane-bound compartments within cells. They contain enzymes that break down large molecules such as proteins, carbohydrates and fats into their building blocks. Low levels or inactivity of a transport protein known as sialin leads to the abnormal accumulation (storage) of sialic acid in the tissues of affected individuals. Sialin normally helps transport sialic acid out of lysosomes.
CLIMB (Children Living with Inherited Metabolic Diseases)
176 Nantwich Road
Crewe, CW2 6BG
Vaincre Les Maladies Lysosomales
2 Ter Avenue
National Tay-Sachs and Allied Diseases Association, Inc.
2001 Beacon Street
Brookline, MA 02146-4227
March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
1825 K Street NW, Suite 1200
Washington, DC 20006
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
GOLD, Global Organisation For Lysosomal Diseases
3 Albion Rd
Chalfont St Giles
Buckinghamshire, HP8 4EW
Hide & Seek Foundation for Lysosomal Disease Research
6475 East Pacific Coast Highway Suite 466
Long Beach, CA 90803
Myelin Disorders Bioregistry Project (MDBP)
Childrens National Medical Center, c/o Dr. Adeline Vanderver
111 Michigan Ave., NW
Washington, DC 20010
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Last Updated: 3/13/2013
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