Mucopolysaccharidosis Type III
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Mucopolysaccharidosis Type III is not the name you expected.
The Mucopolysaccharidoses (MPS Disorders) are a group of rare genetic disorders caused by the deficiency of one of the lysosomal enzymes, resulting in an inability to metabolize complex carbohydrates (mucopolysaccharides) into simpler molecules. High concentrations of mucopolysaccharides in the cells of the central nervous system, including the brain, cause the neurological and developmental deficits that accompany these disorders.
Mucopolysaccharides are rather thick jelly-like ("muco") compounds made of long chains ("poly") of sugar-like (saccharides) molecules used to make connective tissues in the body.
Lysosomal enzymes are found in the lysosome, a very small membrane-contained body (organelle) found in the cytoplasm of most cells. The lysosome is often called the "waste disposal plant" of the cell. The accumulation of these large, undegraded mucopolysaccharides in the cells of the body is the cause of a number of physical symptoms and abnormalities.
MPS-III (Sanfilippo Syndrome) is one of seven MPS Disorders. It is an inborn error of metabolism that is transmitted as an autosomal recessive genetic disorder. MPS-lll has been subdivided into four types: MPS-III Type A, MPS-III Type B, MPS-III Type C, and MPS-III Type D. All types are associated with some degree of mental deterioration, but the severity depends on the particular type of MPS-lll. Several physical defects may be present, and the severity of these defects varies with the type of MPS-III. In the case of each type of MPS-III, abnormal amounts of a specific, chemically complex molecule is excreted in the urine. The excreted chemical is the same for each of the four types of MPS-III, since the defective gene involves a different step, and thus a different enzyme, in the deconstruction of the same mucopolysaccharide. By testing for one or another of these enzymes, the variant type may be readily identified.
CLIMB (Children Living with Inherited Metabolic Diseases)
- Climb Building
- 176 Nantwich Road
- Crewe, CW2 6BG
- United Kingdom
- Tel: 4408452412173
- Fax: 4408452412174
- Email: email@example.com
- Website: http://www.CLIMB.org.uk
Canadian Society for Mucopolysaccharide and Related Diseases, Inc.
- #218-2055 Commercial Drive
- Vancouver, BC V5N 0C7
- Tel: (604) 924-5130
- Tel: 1-800-667-1846
- Email: firstname.lastname@example.org
- Website: http://www.mpssociety.ca
Genetic and Rare Diseases (GARD) Information Center
- PO Box 8126
- Gaithersburg, MD 20898-8126
- Tel: (301)251-4925
- Fax: (301)251-4911
- Tel: (888)205-2311
- Website: http://rarediseases.info.nih.gov/GARD/
Hide & Seek Foundation for Lysosomal Disease Research
- 6475 East Pacific Coast Highway Suite 466
- Long Beach, CA 90803
- Tel: (877)621-1122
- Fax: (866)215-8850
- Email: email@example.com
- Website: http://www.hideandseek.org
Jonahs Just Begun - Foundation to Cure Sanfilippo, Inc.
- P. O. Box 150057
- Brooklyn, NY 11215
- Tel: (347)689-2186
- Fax: (347)710-3136
- Email: firstname.lastname@example.org
- Website: http://jonahsjustbegun.org/
NIH/National Institute of Diabetes, Digestive & Kidney Diseases
- Office of Communications & Public Liaison
- Bldg 31, Rm 9A06
- Bethesda, MD 20892-2560
- Tel: (301)496-3583
- Email: NDDIC@info.niddk.nih.gov
- Website: http://www2.niddk.nih.gov/
National MPS Society, Inc.
- PO Box 14686
- Durham, NC 27709
- Tel: (919)806-0101
- Fax: (919)806-2055
- Tel: (877)677-1001
- Email: email@example.com
- Website: http://www.mpssociety.org
Red Sanfilippo AC
- Tel: +52 (477) 1092133
- Fax: +52 (477) 2802408
- Email: firstname.lastname@example.org
- Website: http://www.redsanfilippo.org/
Sanfilippo Foundation Switzerland
- C/o NAT Services SA
- Street Jargonnant 2
- Geneva 1207,
- Tel: +41 (0) 78-745-08-28
- Email: email@example.com
- Website: http://www.sanfilippo-foundation.org
Society for Mucopolysaccharide Diseases
- MPS House
- Repton Place
- Buckinghamshire, HP7 9LP
- United Kingdom
- Tel: 8453899901
- Fax: 8453899902
- Email: firstname.lastname@example.org
- Website: http://www.mpssociety.co.uk
- 1825 K Street NW, Suite 1200
- Washington, DC 20006
- Tel: (202)534-3700
- Fax: (202)534-3731
- Tel: (800)433-5255
- Email: email@example.com
- Website: http://www.thearc.org
Vaincre Les Maladies Lysosomales
- 2 Ter Avenue
- Massy, 91300
- Tel: 169754030
- Fax: 160111583
- Email: firstname.lastname@example.org
- Website: http://www.vml-asso.org
For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report.
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
Last Updated: 8/17/2007
Copyright 2007 National Organization for Rare Disorders, Inc.
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