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- $Unique_ID{BRK03888}
- $Pretitle{}
- $Title{Joseph's Disease}
- $Subject{Joseph's Disease Stiatonigral Degeneration Type I Joseph's Disease
- Type II Joseph's Disease Type III Joseph's Disease (Machado's Disease) }
- $Volume{}
- $Log{}
-
- Copyright (C) 1986, 1989, 1990 National Organization for Rare Disorders,
- Inc.
-
- 110:
- Joseph's Disease
-
- ** IMPORTANT **
- It is possible the main title of the article (Joseph's Disease) is not
- the name you expected. Please check the SYNONYMS listing to find the
- alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Stiatonigral Degeneration
-
- DISORDER SUBDIVISIONS
-
- Type I Joseph's Disease
- Type II Joseph's Disease
- Type III Joseph's Disease (Machado's Disease)
-
- General Discussion
-
- ** REMINDER **
- The information contained in the Rare Disease Database is provided for
- educational purposes only. It should not be used for diagnostic or treatment
- purposes. If you wish to obtain more information about this disorder, please
- contact your personal physician and/or the agencies listed in the "Resources"
- section.
-
-
- Joseph's Disease is a disorder of the central nervous system with slow
- degeneration of particular areas of the brain.
-
- Symptoms
-
- The patient with Type I Joseph's Disease presents with the initial symptoms
- of a lurching, unsteady gait. This is often accompanied by difficulty in
- speaking (dysarthria) and muscle rigidity. Impairment of eye movements may
- also occur. Mental alertness and intellect are preserved.
-
- Type II Joseph's Disease is less rapid in progression than Type I. Its
- clinical presentation is similar to that of Type I except there appears to be
- a stronger cerebellar component. The cerebellum is the part of the brain
- which coordinates balance and precise movements. Therefore, these patients
- have difficulty in walking and in coordinating movement of the extremities.
-
- The initial symptom of Type III Joseph's Disease is an alteration in the
- patient's ability to walk due to impaired balance (ataxia). The
- distinguishing characteristic of this form of Joseph's Disease is a loss of
- muscle mass, and a disturbed sensation and movement of the extremities.
- Diabetes is also common in Type III Joseph's Disease.
-
- Causes
-
- Joseph's Disease is a disorder of the central nervous system which primarily
- affects people of Portuguese ancestry. It involves a slow degeneration of
- particular areas of the brain which result in neurological impairment. The
- disorder is inherited through an autosomal dominant mode of transmission.
-
- Human traits including the classic genetic diseases, are the product of
- the interaction of two genes for that condition, one received from the father
- and one from the mother. In dominant disorders, a single copy of the disease
- gene (received from either the mother or father) will be expressed
- "dominating" the normal gene and resulting in appearance of the disease. The
- risk of transmitting the disorder from affected parent to offspring is 50%
- for each pregnancy regardless of the sex of the resulting child.
-
- Further studies will be necessary to determine whether the three types of
- Joseph's Disease are due to three different gene abnormalities or the
- expression of a single gene.
-
- Affected Population
-
- Joseph's Disease occurs primarily in individuals of Portuguese ancestry.
-
- Type I usually begins about the age of 20 years, Type II Joseph's Disease
- usually begins later in life around the age of 30 years, and Type III
- (Machado's Disease) usually occurs after 40 years of age.
-
- Therapies: Standard
-
- Treatment of Joseph's Disease is symptomatic and supportive. Rigidity and
- spasticity of the muscles may respond to the drugs L-Dopa and baclofen.
- Genetic tests for this disorder are available to families in which at least
- one member has been affected with Joseph's Disease.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- January 1990. 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.
-
- Resources
-
- For more information on Joseph's Disease, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- International Joseph Diseases Foundation, Inc.
- P.O. Box 2550
- Livermore, CA 94550
-
- NIH/National Institute of Neurological Disorders & Stroke (NINDS)
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-5751
- (800) 352-9424
-
- Roger N. Rosenberg, M.D.
- Professor of Neurology and Physiology
- Chairman, Department of Neurology
- University of Texas Southwestern Medical School
- 5323 Harry Hines Blvd.
- Dallas, TX 75235
- (214) 688-3703
-
- For information on genetics and genetic counseling referrals, please
- contact:
-
- March of Dimes Birth Defects Foundation
- 1275 Mamaroneck Avenue
- White Plains, NY 10605
- (914) 428-7100
-
- Alliance of Genetic Support Groups
- 35 Wisconsin Circle, Suite 440
- Chevy Chase, MD 20815
- (800) 336-GENE
- (301) 652-5553
-
- References
-
- MENDELIAN INHERITANCE IN MAN, 8th ed.: Victor A. McKusick; Johns Hopkins
- University Press, 1986. P. 88.
-
-