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- $Unique_ID{BRK04243}
- $Pretitle{}
- $Title{Sucrose-Isomaltose Malabsorption, Congenital}
- $Subject{Sucrose-Isomaltose Malabsorption, Congenital Disaccharide Intolerance
- I Sucrase-alpha-Dextrinase Deficiency, Congenital Sucrase-Isomaltase
- Deficiency, Congenital Sucrose Intolerance, Congenital Lactose Intolerance
- (Disaccharide Intolerance II; Lactase Deficiency, Congenital) }
- $Volume{}
- $Log{}
-
- Copyright (C) 1988, 1989 National Organization for Rare Disorders, Inc.
-
- 626:
- Sucrose-Isomaltose Malabsorption, Congenital
-
- ** IMPORTANT **
- It is possible that the main title of this article (Congenital Sucrose-
- Isomaltose Malabsorption) is not the name you expected. Please check the
- SYNONYM list to find the alternate names and disorder subdivisions covered by
- this article.
-
- Synonyms
-
- Disaccharide Intolerance I
- Sucrase-alpha-Dextrinase Deficiency, Congenital
- Sucrase-Isomaltase Deficiency, Congenital
- Sucrose Intolerance, Congenital
-
- Information on the following disorder can be found in the Related
- Disorders section of this report:
-
- Lactose Intolerance (Disaccharide Intolerance II; Lactase Deficiency,
- Congenital)
-
- 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 physician and/or the agencies listed in the "Resources" section
- of this report.
-
- Congenital Sucrose-Isomaltose Malabsorption is a genetic metabolic
- disorder characterized by an inborn deficiency of the enzyme sucrase-
- isomaltase. This deficiency causes diarrhea if table sugar (sucrose) or
- certain other carbohydrates are eaten.
-
- Symptoms
-
- Congenital Sucrose-Isomaltose Malabsorption is characterized primarily by
- diarrhea. Children with this disorder may be unable to gain weight on a
- normal diet. Adults may experience abdominal cramps and bloating, and
- excessive gas (flatus) when sugar or other carbohydrates are eaten. Diarrhea
- may be severe enough to purge other nutrients before they can be absorbed.
-
- Causes
-
- Congenital Sucrose-Isomaltose Malabsorption is a hereditary disorder
- transmitted through autosomal recessive genes. (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 for the same trait from each parent. If a person
- receives one normal gene and one gene for the disease, he or she 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 25 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
-
- Congenital Sucrose-Isomaltose Malabsorption is a rare disorder affecting
- children from birth. Males and females are found to have this disorder in
- equal numbers. Some patients may be only mildly affected while others may
- have a moderate to severe form of the disorder.
-
- Related Disorders
-
- Symptoms of the following disorder can resemble those of Congenital Sucrose-
- Isomaltose Malabsorption. Comparisons may be useful for a differential
- diagnosis:
-
- Lactose Intolerance (Disaccharide Intolerance II; Lactase Deficiency).
- Malabsorption syndromes result from impaired absorption of nutrients from the
- small bowel. Lactose Intolerance is characterized by diarrhea and abdominal
- distention. A lack of the lactase enzyme results in an inability to digest
- lactose which is a type of sugar found in milk. Avoiding milk products makes
- it possible for patients with Lactose Intolerance to lead normal lives,
- although the disorder may get worse with age. (For more information, choose
- "Lactose" as your search term in the Rare Disease Database.)
-
- Therapies: Standard
-
- Congenital Sucrose Isomaltose Malabsorption is treated by administering the
- sucrase-isomaltase enzyme derived from a type of yeast. A carefully
- controlled diet should avoid sucrose and sucrose containing foods.
-
- Therapies: Investigational
-
- This disease entry is based upon medical information available through
- December 1988. 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 Congenital Sucrose-Isomaltose Absorption, please
- contact:
-
- National Organization for Rare Disorders (NORD)
- P.O. Box 8923
- New Fairfield, CT 06812-1783
- (203) 746-6518
-
- National Digestive Diseases Information Clearinghouse
- Box NDDIC
- Bethesda, MD 20892
- (301) 468-6345
-
- 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
-
- ENZYME-SUBSTITUTION THERAPY WITH THE YEAST SACCHAROMYCES CEREVISIAE IN
- CONGENITAL SUCRASE-ISOMALTASE DEFICIENCY: H.K. Harms, et al.; New England
- Journal Med (May 21, 1987: issue 316(21)). Pp. 1306-1309.
-
- THE METABOLIC BASIS OF INHERITED DISEASE, 5th ed.: John B. Stanbury, et
- al., eds.; McGraw Hill, 1983. Pp. 1731-1733.
-
-