Maroteaux Lamy Syndrome
Maroteaux Lamy Syndrome
Important
It is possible that the main title of the report Maroteaux Lamy Syndrome 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.
Summary
Maroteaux-Lamy syndrome (mucopolysaccharidosis type VI; MPS VI) is a rare genetic disorder characterized by complete or partial lack of activity of the enzyme arylsulfatase B (also called N-acetylgalactosamine-4-sulfatase). Deficiency or absence of this enzyme activity leads to the accumulation of complex carbohydrates called glycosaminoglycans (previously known as mucopolysaccharides) in the body. Abnormal accumulation of mucopolysaccharides leads to progressive involvement of multiple organ systems. The symptoms and severity of Maroteaux-Lamy syndrome can vary dramatically from one person to another; some individuals only develop mild symptoms, while others develop severe, even life-threatening complications. Common symptoms can include coarse facial features, corneal clouding, joint abnormalities, various skeletal malformations, an abnormally enlarged liver and/or spleen (hepatosplenomegaly), and hearing loss. Cardiac disease and restrictive pulmonary disease can also occur. Intelligence is usually not affected. In 2005, the Food and Drug Administration (FDA) approved the enzyme replacement therapy known as Naglazyme® for the treatment of Maroteaux-Lamy syndrome. Maroteaux-Lamy syndrome occurs due to mutations in the ARSB gene and is inherited as an autosomal recessive disorder.
Introduction
The mucopolysaccharidoses (MPS) are a group of inherited lysosomal storage disorders. More than 50 lysosomal storage disorders have been identified so far. Lysosomes function as the primary digestive units within cells. Enzymes within lysosomes break down or digest particular metabolites, such as certain carbohydrates and fats. In individuals with MPS disorders, deficiency or malfunction of specific lysosomal enzymes leads to an abnormal accumulation of certain complex carbohydrates known as mucopolysaccharides or glycosaminoglycans in the arteries, skeleton, eyes, joints, ears, skin, and/or teeth. These accumulations may also be found in the respiratory system, liver, spleen, central nervous system, blood, and bone marrow. This accumulation eventually causes progressive damage to cells, tissues, and various organ systems of the body. There are several different types and subtypes of MPS. These disorders, with one exception (MPS type II), are inherited in an autosomal recessive manner. Maroteaux-Lamy syndrome was named from the two French physicians who first described this disorder in the medical literature in 1963.
CLIMB (Children Living with Inherited Metabolic Diseases)
Climb Building
176 Nantwich Road
Crewe, CW2 6BG
United Kingdom
Tel: 4408452412173
Fax: 4408452412174
Email: enquiries@climb.org.uk
Internet: http://www.CLIMB.org.uk
Vaincre Les Maladies Lysosomales
2 Ter Avenue
Massy, 91300
France
Tel: 0169754030
Fax: 0160111583
Email: accueil@vml-asso.org
Internet: http://www.vml-asso.org
Lighthouse International
111 E 59th St
New York, NY 10022-1202
Tel: (800)829-0500
Email: info@lighthouse.org
Internet: http://www.lighthouse.org
National MPS Society, Inc.
PO Box 14686
Durham, NC 27709
Tel: (919)806-0101
Fax: (919)806-2055
Tel: (877)677-1001
Email: info@mpssociety.org
Internet: http://www.mpssociety.org
NIH/National Institute of Diabetes, Digestive & Kidney Diseases
Office of Communications & Public Liaison
Bldg 31, Rm 9A06
31 Center Drive, MSC 2560
Bethesda, MD 20892-2560
Tel: (301)496-3583
Email: NDDIC@info.niddk.nih.gov
Internet: http://www2.niddk.nih.gov/
Society for Mucopolysaccharide Diseases
MPS House
Repton Place
White Lion Road
Amersham
Buckinghamshire, HP7 9LP
United Kingdom
Tel: 08453899901
Fax: 08453899902
Email: mps@mpssociety.co.uk
Internet: http://www.mpssociety.co.uk
Canadian Society for Mucopolysaccharide and Related Diseases, Inc.
PO Box 30034
RPO Parkgate
North Vancouver
British Columbia, V7H 2Y8
Canada
Tel: 6049245130
Fax: 6049245131
Tel: 8006671846
Email: info@mpssociety.ca
Internet: 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
TDD: (888)205-3223
Internet: http://rarediseases.info.nih.gov/GARD/
Let Them Hear Foundation
1900 University Avenue, Suite 101
East Palo Alto, CA 94303
Tel: (650)462-3174
Fax: (650)462-3144
Email: info@letthemhear.org
Internet: http://www.letthemhear.org
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: info@hideandseek.org
Internet: http://www.hideandseek.org
It is possible that the main title of the report Maroteaux Lamy Syndrome 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
- Arylsulfatase-B Deficiency
- MPS type VI
- Mucopolysaccharidosis type VI
- Polydystrophic Dwarfism
- MPS 6
- MPS VI
Disorder Subdivisions
- None
General Discussion
Summary
Maroteaux-Lamy syndrome (mucopolysaccharidosis type VI; MPS VI) is a rare genetic disorder characterized by complete or partial lack of activity of the enzyme arylsulfatase B (also called N-acetylgalactosamine-4-sulfatase). Deficiency or absence of this enzyme activity leads to the accumulation of complex carbohydrates called glycosaminoglycans (previously known as mucopolysaccharides) in the body. Abnormal accumulation of mucopolysaccharides leads to progressive involvement of multiple organ systems. The symptoms and severity of Maroteaux-Lamy syndrome can vary dramatically from one person to another; some individuals only develop mild symptoms, while others develop severe, even life-threatening complications. Common symptoms can include coarse facial features, corneal clouding, joint abnormalities, various skeletal malformations, an abnormally enlarged liver and/or spleen (hepatosplenomegaly), and hearing loss. Cardiac disease and restrictive pulmonary disease can also occur. Intelligence is usually not affected. In 2005, the Food and Drug Administration (FDA) approved the enzyme replacement therapy known as Naglazyme® for the treatment of Maroteaux-Lamy syndrome. Maroteaux-Lamy syndrome occurs due to mutations in the ARSB gene and is inherited as an autosomal recessive disorder.
Introduction
The mucopolysaccharidoses (MPS) are a group of inherited lysosomal storage disorders. More than 50 lysosomal storage disorders have been identified so far. Lysosomes function as the primary digestive units within cells. Enzymes within lysosomes break down or digest particular metabolites, such as certain carbohydrates and fats. In individuals with MPS disorders, deficiency or malfunction of specific lysosomal enzymes leads to an abnormal accumulation of certain complex carbohydrates known as mucopolysaccharides or glycosaminoglycans in the arteries, skeleton, eyes, joints, ears, skin, and/or teeth. These accumulations may also be found in the respiratory system, liver, spleen, central nervous system, blood, and bone marrow. This accumulation eventually causes progressive damage to cells, tissues, and various organ systems of the body. There are several different types and subtypes of MPS. These disorders, with one exception (MPS type II), are inherited in an autosomal recessive manner. Maroteaux-Lamy syndrome was named from the two French physicians who first described this disorder in the medical literature in 1963.
Resources
CLIMB (Children Living with Inherited Metabolic Diseases)
Climb Building
176 Nantwich Road
Crewe, CW2 6BG
United Kingdom
Tel: 4408452412173
Fax: 4408452412174
Email: enquiries@climb.org.uk
Internet: http://www.CLIMB.org.uk
Vaincre Les Maladies Lysosomales
2 Ter Avenue
Massy, 91300
France
Tel: 0169754030
Fax: 0160111583
Email: accueil@vml-asso.org
Internet: http://www.vml-asso.org
Lighthouse International
111 E 59th St
New York, NY 10022-1202
Tel: (800)829-0500
Email: info@lighthouse.org
Internet: http://www.lighthouse.org
National MPS Society, Inc.
PO Box 14686
Durham, NC 27709
Tel: (919)806-0101
Fax: (919)806-2055
Tel: (877)677-1001
Email: info@mpssociety.org
Internet: http://www.mpssociety.org
NIH/National Institute of Diabetes, Digestive & Kidney Diseases
Office of Communications & Public Liaison
Bldg 31, Rm 9A06
31 Center Drive, MSC 2560
Bethesda, MD 20892-2560
Tel: (301)496-3583
Email: NDDIC@info.niddk.nih.gov
Internet: http://www2.niddk.nih.gov/
Society for Mucopolysaccharide Diseases
MPS House
Repton Place
White Lion Road
Amersham
Buckinghamshire, HP7 9LP
United Kingdom
Tel: 08453899901
Fax: 08453899902
Email: mps@mpssociety.co.uk
Internet: http://www.mpssociety.co.uk
Canadian Society for Mucopolysaccharide and Related Diseases, Inc.
PO Box 30034
RPO Parkgate
North Vancouver
British Columbia, V7H 2Y8
Canada
Tel: 6049245130
Fax: 6049245131
Tel: 8006671846
Email: info@mpssociety.ca
Internet: 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
TDD: (888)205-3223
Internet: http://rarediseases.info.nih.gov/GARD/
Let Them Hear Foundation
1900 University Avenue, Suite 101
East Palo Alto, CA 94303
Tel: (650)462-3174
Fax: (650)462-3144
Email: info@letthemhear.org
Internet: http://www.letthemhear.org
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: info@hideandseek.org
Internet: http://www.hideandseek.org
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