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- $Unique_ID{BRK03404}
- $Pretitle{}
- $Title{5-Oxoprolinuria}
- $Subject{5-Oxoprolinuria Pyroglutamic Aciduria Pyroglutamicaciduria
- Oxoprolinase Deficiency Glutathionuria (Gamma-Glutamyl Transpeptidase
- Deficiency)}
- $Volume{}
- $Log{}
-
- Copyright (C) 1988, 1989, 1990 National Organization for Rare Disorders,
- Inc.
-
- 522:
- 5-Oxoprolinuria
-
- ** IMPORTANT **
- It is possible the main title of the article (5-Oxoprolinuria) is not the
- name you expected. Please check the SYNONYMS listing on the next page to
- find alternate names and disorder subdivisions covered by this article.
-
- Synonyms
-
- Pyroglutamic Aciduria
- Pyroglutamicaciduria
-
- Information on the following disorder can be found in the Related Disorders
- section of this report:
-
- Oxoprolinase Deficiency
- Glutathionuria (Gamma-Glutamyl Transpeptidase Deficiency)
-
- 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 of this report.
-
-
- 5-Oxoprolinuria is a metabolic disorder caused by an inborn error of
- glutathione metabolism. It is characterized by excretion of massive amounts
- of 5-oxoproline (pyroglutamic acid) in the urine, and abnormally high levels
- of this acid in the blood and cerebrospinal fluid. The disorder is caused by
- a deficiency of the enzyme glutathione synthetase. Functioning of the
- central nervous system is impaired. High acidity levels in the blood and
- body tissues (metabolic acidosis) usually occur.
-
- Symptoms
-
- 5-Oxoprolinuria is characterized by excretion of massive amounts of 5-
- oxoproline (pyroglutamic acid) in the urine, and abnormally high levels of
- this acid in the blood and cerebrospinal fluid. Without treatment, mental
- retardation, impaired muscle coordination (cerebellar ataxia), and seizures
- may occur.
-
- Causes
-
- 5-Oxoprolinuria is inherited as an autosomal recessive trait. The disorder
- is the result of a deficiency of the enzyme glutathione synthetase. (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 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.)
-
- Affected Population
-
- 5-Oxoprolinuria can be present at birth. It is a very rare disorder
- affecting males and females in equal numbers.
-
- Related Disorders
-
- Symptoms of the following disorders may be similar to those of 5-
- Oxoprolinuria. Comparisons may be useful for a differential diagnosis:
-
- 5-Oxoprolinase Deficiency is characterized by an inborn deficiency of the
- enzyme 5-oxoprolinase. A moderate amount of 5-oxoproline is excreted in the
- urine and blood levels of this substance are higher than normal. Persons
- with this disorder usually exhibit no other symptoms related to the enzyme
- deficiency.
-
- Glutathionuria (Gamma-Glutamyl Transpeptidase Deficiency) is a very rare,
- possibly hereditary metabolic disorder. Concentrations of glutathione in
- blood and urine are excessive. Patients with this disorder may be mildly
- mentally retarded and/or suffer from behavioral problems.
-
- Therapies: Standard
-
- 5-Oxoprolinuria is treated with bicarbonate of soda to compensate for
- metabolic acidosis.
-
- Genetic counseling is recommended for families of children with 5-
- Oxoprolinuria.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through April
- 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 5-Oxoprolinuria, 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
-
- Research Trust for Metabolic Diseases in Children
- Golden Gates Lodge, Weston Rd.
- Crewe CW1 1XN, England
- Telephone: (0270) 250244
-
- For genetic information 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
-
- METABOLIC BASIS OF INHERITED DISEASE, 5th ed.: John B. Stanbury, et al.,
- eds; McGraw Hill, 1983. Pp. 348-357.
-
- OPHTHALMOLOGICAL, PSYCHOMETRIC AND THERAPEUTIC INVESTIGATION IN TWO
- SISTERS WITH HEREDITARY GLUTATHIONE SYNTHETASE DEFICIENCY (5-OXOPROLINURIA):
- A. Larsson, et al.; Neuropediatrics (August 1985: issue 16(3)). Pp. 131-
- 136.
-
- NEONATAL 5-OXOPROLINURIA: DIFFICULT-TO-DIAGNOSE?: I.S. Mendelson, et
- al.; Journal Inherited Metab Dis (1983: issue 6(1)). Pp. 44-48.
-
- THE CEREBRAL LESIONS IN A PATIENT WITH GENERALIZED GLUTATHIONE DEFICIENCY AND
- PYROGLUTAMIC ACIDURIA (5-OXOPROLINURIA): K. Skullerud, et al.; Acta
- Neuropathol (Berlin) (1980: issue 52(3)). Pp. 235-238.
-
-