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[Hereditary fructose intolerance (HFI) as cause of isolated gamma GT rise in a 5-year old boy with hepatomegaly].

The diagnosis of HFI is easily missed during childhood. It should be suspected in children presenting with hepatomegaly and an isolated increase in GGT. A carefully taken nutritional history forms the basis of the diagnosis of HFI which can be confirmed by molecular analysis with a sensitivity of > 95%. I.v. fructose tolerance tests and liver biopsies often can be omitted.

Biopsy↗
PubMed1993

Metabolic studies of a fructose-intolerant yeast by in vivo 31P-nuclear magnetic resonance spectroscopy.

The metabolic effects of the administration of fructose to a yeast expressing the cDNA for rat liver ketohexokinase have been investigated by 31P-nuclear magnetic resonance spectroscopy. Cessation of growth suffered by the yeast on exposure to 5 and 25 mM-fructose was accompanied by a large accumulation of fructose 1-phosphate at the expense of cytoplasmic orthophosphate and nucleoside triphosphate. Shifts in resonances were consistent with a drop in cytoplasmic pH. Arresting growth with 1 mM-fructose, however, did not result in these changes, although a large accumulation of fructose 1-phosphate occurred which may have been supported by the mobilization of polyphosphates.

Animals↗