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- $Unique_ID{BRK03577}
- $Pretitle{}
- $Title{Central Core Disease}
- $Subject{Central Core Disease Muscle Core Disease Nonprogressive Congenital
- Myopathy}
- $Volume{}
- $Log{}
-
- Copyright (C) 1986, 1990, 1992 National Organization for Rare Disorders,
- Inc.
-
- 148:
- Central Core Disease
-
- ** IMPORTANT **
- It is possible that the main title of the article (Central Core Disease)
- is not the name you expected. Please check the SYNONYM listing to find the
- alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Muscle Core Disease
- Nonprogressive Congenital Myopathy
-
- 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.
-
-
- Central Core Disease is an inherited muscular disorder characterized by
- weakness of muscles during early childhood. The legs are usually most
- severely affected and the hips may be dislocated. The disease does not
- progress and by about the age of six years, most children can walk. The
- disease derives its name from the presence of an abnormal core in each
- microscopic muscle fiber.
-
- Symptoms
-
- Central Core Disease becomes evident at birth or soon afterwards. The thigh
- and upper arm muscles are weak and soft, with diminished tone. The muscles
- may also appear slightly thin. Patients have difficulty sitting upright or
- walking. By school age, however, they have overcome these problems; as
- adults, they may have slight weakness of the lower extremities as well as
- running and jumping.
-
- Patients seem to be unusually susceptible to malignant hyperthermia,
- characterized by a dangerous increase in body temperature in response to
- anesthesia during surgery, and reflecting abnormal increased metabolism in
- muscle tissue.
-
- There may be a lack of nerve response in the muscles as some of the nerve
- development in the muscles is usually observed. Biochemical and mineral
- deficiencies are sometimes noticed in patients with Central Core Disease.
-
- Causes
-
- Central Core Disease usually follows an autosomal dominant inheritance.
-
- Occasionally, the disease seems to be inherited recessively.
-
- 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 autosomal dominant disorders, a single abnormal gene, contributed by
- either parent, "overrides" the normal gene contributed by the other parent
- causing disease. Individuals with one affected parent have a 50% chance of
- inheriting the disorder. Males and females are affected in equal numbers.
-
- In recessive disorders, the condition does not appear unless a person
- inherits the same defective gene from each parent. If one receives one
- normal gene and one gene for the disease, the person will be a carrier for
- the disease, but usually will show no symptoms. The risk of transmitting the
- disease to the children of a couple, both of whom are carriers for a
- recessive disorder, is twenty-five percent. Fifty percent of their children
- will be carriers, but healthy as described above. Twenty-five percent of
- their children will receive both normal genes, one from each parent and will
- be genetically normal.
-
- The biochemical abnormality causing muscular weakness and the presence of
- the core in the muscle fibers is not known.
-
- Related Disorders
-
- Nemaline myopathy is a more severe muscular disorder that sometimes occurs in
- the same families as Central Core Disease. Different muscles are affected,
- their microscopic appearance is not the same, and the prognosis is poorer in
- nemaline myopathy.
-
- Therapies: Standard
-
- Treatment of Central Core Disease is symptomatic and supportive. Symptoms of
- the disorder often improve as the child gets older.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- September 1992. 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 Central Core Disease, please contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- NIH/National Institute of Neurological Disorders & Stroke (NINDS)
- 9000 Rockville Pike
- Bethesda, MD 20892
- (301) 496-5751
- (800) 352-9424
-
- Muscular Dystrophy Association, National Office
- 3300 E. Sunrise Dr.
- Tucson, AZ 85718
- (602) 529-2000
-
- For information on genetics and genetic counseling referrals, please
- contact:
-
- March of Dimes Birth Defects Foundation
- 1275 Mamaroneck Avenue
- White Plain, 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
-
- THE MERCK MANUAL 15th ed: R. Berkow, et al: eds; Merck, Sharp & Dohme
- Research Laboratories, 1987. P. 1452.
-
- MENDELIAN INHERITANCE IN MAN, 8th ed.: Victor A. McKusick; Johns Hopkins
- University Press, 1986. P. 136.
-
-