Biomaterial Database

Fructose-1-phosphate and fructose-1,6-bisphosphate aldolases in the small intestinal mucosa. 1987

Z Lerner, and M Cooper, and E Granot, and E Hegesh

Reference values are presented for the activity of fructose-1-phosphate aldolase (F1PA) and fructose-1,6-bisphosphate aldolase (FBPA) in the small intestinal mucosa of 32 nonaffected children, 8 nonaffected adults and 2 children with hereditary fructose intolerance (HFI). The 96% confidence limits for F1PA in children are 1.55 to 43.0 u/g protein, completely distinct from the results of the two affected children (1.3 and less than 0.1 u/g protein). With fructose-1,6-bisphosphate as subtrate, the 96% confidence limits are 10 to 324 u/g protein and the values for the two affected children, 23.7 and 9.3 u/g. Among the nonaffected children two mucosal biopsies with F1PA activities less than 1.55 u/g were found. In one mucosal biopsy among the nonaffected children an FBPA activity less than 10 u/g was recorded. The data are interpreted as indicating that the determination of F1PA activity in intestinal mucosa is a highly sensitive test in detecting individuals with HFI. However, the specifity of the test is not absolute. Diagnosis should be based on both clinical and laboratory considerations. The determination of FBPA activity in the same biopsy specimen does not contribute substantially to the differential diagnosis.

UI	MeSH Term	Description	Entries
D007413	Intestinal Mucosa	Lining of the INTESTINES, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. In the SMALL INTESTINE, the mucosa is characterized by a series of folds and abundance of absorptive cells (ENTEROCYTES) with MICROVILLI.	Intestinal Epithelium,Intestinal Glands,Epithelium, Intestinal,Gland, Intestinal,Glands, Intestinal,Intestinal Gland,Mucosa, Intestinal
D002648	Child	A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL.	Children
D004386	Duodenum	The shortest and widest portion of the SMALL INTESTINE adjacent to the PYLORUS of the STOMACH. It is named for having the length equal to about the width of 12 fingers.	Duodenums
D005633	Fructose Intolerance	An autosomal recessive fructose metabolism disorder due to deficient fructose-1-phosphate aldolase (EC 2.1.2.13) activity, resulting in accumulation of fructose-1-phosphate. The accumulated fructose-1-phosphate inhibits glycogenolysis and gluconeogenesis, causing severe hypoglycemia following ingestion of fructose. Prolonged fructose ingestion in infants leads ultimately to hepatic failure and death. Patients develop a strong distaste for sweet food, and avoid a chronic course of the disease by remaining on a fructose- and sucrose-free diet.	ALDOB Deficiency,Aldolase B Deficiency,Fructose Aldolase B Deficiency,Fructose Intolerance, Hereditary,Fructose-1,6-Biphosphate Aldolase Deficiency,Fructose-1,6-Bisphosphate Aldolase B Deficiency,Fructose-1-Phosphate Aldolase Deficiency,Fructosemia,Hereditary Fructose Intolerance,ALDOB Deficiencies,Aldolase B Deficiencies,Aldolase Deficiencies, Fructose-1,6-Biphosphate,Aldolase Deficiencies, Fructose-1-Phosphate,Aldolase Deficiency, Fructose-1,6-Biphosphate,Aldolase Deficiency, Fructose-1-Phosphate,Deficiencies, ALDOB,Deficiencies, Aldolase B,Deficiencies, Fructose-1,6-Biphosphate Aldolase,Deficiencies, Fructose-1-Phosphate Aldolase,Deficiency, ALDOB,Deficiency, Aldolase B,Deficiency, Fructose-1,6-Biphosphate Aldolase,Deficiency, Fructose-1-Phosphate Aldolase,Fructose 1 Phosphate Aldolase Deficiency,Fructose 1,6 Biphosphate Aldolase Deficiency,Fructose 1,6 Bisphosphate Aldolase B Deficiency,Fructose Intolerances,Fructose Intolerances, Hereditary,Fructose-1,6-Biphosphate Aldolase Deficiencies,Fructose-1-Phosphate Aldolase Deficiencies,Fructosemias,Hereditary Fructose Intolerances,Intolerance, Fructose,Intolerances, Fructose
D005634	Fructose-Bisphosphate Aldolase	An enzyme of the lyase class that catalyzes the cleavage of fructose 1,6-biphosphate to form dihydroxyacetone phosphate and glyceraldehyde 3-phosphate. The enzyme also acts on (3S,4R)-ketose 1-phosphates. The yeast and bacterial enzymes are zinc proteins. (Enzyme Nomenclature, 1992) E.C. 4.1.2.13.	Aldolase,Fructosediphosphate Aldolase,Aldolase A,Aldolase B,Aldolase C,Fructose 1,6-Bisphosphate Aldolase,Fructose 1,6-Bisphosphate Aldolase, Class II,Fructose 1-Phosphate Aldolase,Fructose Biphosphate Aldolase,Fructosemonophosphate Aldolase,1,6-Bisphosphate Aldolase, Fructose,Aldolase, Fructose 1,6-Bisphosphate,Aldolase, Fructose 1-Phosphate,Aldolase, Fructose Biphosphate,Aldolase, Fructose-Bisphosphate,Aldolase, Fructosediphosphate,Aldolase, Fructosemonophosphate,Fructose 1 Phosphate Aldolase,Fructose 1,6 Bisphosphate Aldolase,Fructose Bisphosphate Aldolase
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults