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Related Experiment Videos

Aldolase B and fructose intolerance

T M Cox1

  • 1Department of Medicine, University of Cambridge, Addenbrooke's Hospital, U.K.

FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology
|January 1, 1994
PubMed
Summary

Hereditary fructose intolerance, a genetic disorder affecting fructose metabolism, causes severe reactions to sugars. Early dietary intervention with fructose exclusion allows individuals to live a normal lifespan.

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Area of Science:

  • Human genetics and metabolic disorders
  • Nutritional science and disease pathogenesis

Background:

  • Hereditary fructose intolerance (HFI) is an autosomal recessive disorder.
  • It results from genetic defects in fructose-1,6-bisphosphate aldolase (aldolase B), an enzyme crucial for metabolizing dietary sugars.
  • HFI highlights the interaction between genetic predisposition and environmental factors (diet) in nutritional diseases.

Purpose of the Study:

  • To describe the genetic basis and clinical manifestations of hereditary fructose intolerance.
  • To emphasize the critical role of dietary management in the disease's outcome.
  • To note the characteristic aversion to sweet foods in affected individuals.

Main Methods:

  • The abstract describes a genetic disorder and its clinical presentation.
  • It reviews the metabolic consequences of ingesting fructose, sorbitol, or sucrose.
  • It discusses the therapeutic approach of dietary exclusion.

Main Results:

  • Ingestion of specific sugars triggers severe symptoms like vomiting, abdominal pain, and hypoglycemia.
  • These metabolic disturbances can be life-threatening if not managed.
  • Dietary exclusion of fructose leads to rapid symptom resolution and a normal life expectancy.

Conclusions:

  • Hereditary fructose intolerance is a serious but manageable genetic metabolic disorder.
  • Early diagnosis and strict dietary management are essential for patient survival and well-being.
  • Affected individuals often develop aversions to sweets, which may reduce dental caries incidence.

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