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Sialidosis
Important
It is possible that the main title of the report Sialidosis
is not the name you expected. Please check the synonyms listing to find
the alternate name(s) and disorder subdivision(s) covered by this report.
Synonyms
- Alpha-Neuraminidase Deficiency
- Cherry Red Spot and Myoclonus Syndrome
- Glycoprotein Neuraminidase, Deficiency of
- Lipomucopolysaccharidosis Type I
- ML I
- Mucolipidosis I
- Sialidase Deficiency
Disorder Subdivisions
- Sialidosis Type I (Juvenile)
- Sialidosis Type II (Infantile)
General Discussion
Sialidosis is a very rare inherited metabolic disorder characterized by a deficiency of the enzyme alpha-neuraminidase. This disorder belongs to a group of diseases known as lysosomal disorders. Lysosomes are particles bound in membranes within cells that break down certain fats and carbohydrates. The deficiency of alpha-neuraminidase that characterizes Sialidosis leads to the abnormal accumulation of certain complex carbohydrates (mucopolysaccharides) and certain fatty substances (mucolipids) in many tissues of the body. Previously known as Mucolipidosis I, Sialidosis belongs to a subgroup of lysosomal diseases known as Mucolipidoses.
The symptoms of Sialidosis Type I, which typically begin during the 2nd decade of life, may include sudden involuntary muscle contractions (myoclonus), the appearance of red spots (cherry-red macules) in the eyes, and/or other neurological findings. Sialidosis Type II may begin during infancy or later. It is characterized by the same visual characteristics as Sialidosis Type I, as well as other symptoms such as mildly coarse facial features, skeletal malformations, and/or mild mental retardation. Sialidosis is inherited as an autosomal recessive genetic trait.
Resources
CLIMB (Children Living with Inherited Metabolic Diseases)
Climb Building
176 Nantwich Road
Crewe, Intl CW2 6BG
United Kingdom
Tel: +44 870 7700 325
Fax: +44 870 7700 327
Email: info@climb.org.uk
Internet: http://www.CLIMB.org.uk
Vaincre Les Maladies Lysosomales
2 ter avenue de Fance
Massy, 91300
France
Tel: 01 69 75 40 30
Fax: 01 60 11 15 83
Email: accueil@vml-asso.org
Internet: http://www.vml-asso.org
The Arc (a national organization on mental retardation)
1010 Wayne Ave
Suite 650
Silver Spring, MD 20910
Tel: (301)565-3842
Fax: (301)565-3843
Tel: (800)433-5255
TDD: (817)277-0553
Email: info@thearc.org
Internet: http://www.thearc.org/
NIH/National Digestive Diseases Information Clearinghouse
2 Information Way
Bethesda, MD 20892-3570
Tel: (301)654-3810
Fax: (301)907-8906
Tel: (800)891-5389
Email: nddic@info.niddk.nih.gov
Internet: http://www.niddk.nih.gov
Society for Mucopolysaccharide Diseases
46 Woodside Road
Amersham
Buckinghamshire, HP6 6AJ
United Kingdom
Tel: 004401494 434156
Fax: 004401494 434252
Email: mps@mpssociety.co.uk
Internet: http://www.mpssociety.co.uk
Canadian Society for Mucopolysaccharide and Related Diseases, Inc.
PO Box 64714
Unionville
Ontario, Intl L3R OM9
Canada
Tel: 905-479-8701
Fax: 905-479-8701
Tel: 800-667-1846
Email: lori.mps@rogers.com
Internet: http://www.mpssociety.ca
International Society for Mannosidosis & Related Diseases, Inc.
1030 Saxon Hill Drive
Cockeysville, MD 21030
USA
Tel: 4106289991
Email: pres@mannosidosis.org
Internet: http://www/mannosidosis.org
Hide & Seek Foundation for Lysosomal Disease Research
4123 Lankershim Blvd.
Suite 302
North Hollywood, CA 91602-2828
Tel: (818)762-8621
Fax: (818)762-2502
Email: info@hideandseek.org
Internet: http://www.hideandseek.org
For a Complete Report:
This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
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.
For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org
Last Updated: 4/27/2008
Copyright 1986, 1990, 1995, 2000 National Organization for Rare Disorders, Inc.
WebMD Medical Reference from the National Organization of Rare Disorders
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