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Definition:

Scheie syndrome is an inherited disease of metabolism in which the body cannot properly break down long chains of sugar molecules called glycosaminoglycans (formerly called mucopolysaccharides).

The syndrome belongs to a group of diseases called mucopolysaccharidoses (MPS). Specifically, it is known as MPS I S.

See also:



Alternative Names:

Mucopolysaccharidosis type I S; MPS I S



Causes, incidence, and risk factors:

Persons with Scheie syndrome are missing a substance called lysosomal alpha-L-iduronidase. This substance, called an enzyme, helps break down long chains of sugar molecules called glycosaminoglycans (formerly called mucopolysaccharides). These molecules are found throughout the body, often in mucus and in fluid around the joints.

Without the enzyme, glycosaminoglycans build up. This excess material is stored in body tissues and can damage organs, including the heart. Symptoms can range from mild to severe.

Scheie syndrome is the mildest form of mucopolysaccharidosis type 1. The syndrome is transmitted as an autosomal recessive trait. That means that both parents must pass along the defective gene for the offspring to have the disease.



Symptoms:

Symptoms may not appear until age 4 or 5, and may include:

  • Broad mouth with full lips
  • Claw hands and deformed feet
  • Cloudy cornea and progressive loss of vision, resulting in blindness
  • Coarsened facial features
  • Increased body hair (hirsutism )
  • Prognathism
  • Stiff joints


Signs and tests:

A physical exam may show signs of:

An eye exam will show cloudy corneas and retinal pigmentation.

Urine tests will be done. Persons with Scheie syndrome have increased amounts of dermatan and heparan sulfate in their urine. See: Urine dermatan sulfate

Other tests may include:



Treatment:

Enzyme replacement therapy for patients with a defect in the enzyme a-L-iduronidase is now possible. This includes individuals with Scheie syndrome, but also Hurler and Hurler-Scheie syndromes.

Early recognition and treatment of spinal cord compression can prevent permanent nerve damage. Treatment is also given for heart problems caused by leaky valves.



Support Groups:

The National MPS Society -- www.mpssociety.org



Expectations (prognosis):

Scheie syndrome is compatible with an almost normal lifespan. However, some disabilities such as limitation of joints, blindness, or deafness are likely to occur later in life.



Complications:
  • Compression of the spinal cord, which can lead to loss of nerve function
  • Extremity deformities
  • Hearing loss and deafness
  • Problems with the aortic valve
  • Vision problems


Calling your health care provider:

Call your health care provider if you have symptoms of this disorder.



Prevention:

Genetic counseling is recommended for prospective parents with a family history of Scheie syndrome. Counseling is also recommended for families who have a child with Scheie syndrome, to help them understand the condition and possible treatments.




Review Date: 5/11/2009
Reviewed By: Diana Chambers, MS, EdD, Certified Genetics Counselor (ABMG), Charter Member of the American Board of Genetic Counseling, University of Tennessee, Memphis, TN. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100