Article (Scientific journals)
Patients With Aldolase B Deficiency Are Characterized by Increased Intrahepatic Triglyceride Content.
Simons, Nynke; DEBRAY, François-Guillaume; Schaper, Nicolaas C. et al.
2019In Journal of Clinical Endocrinology and Metabolism, 104 (11), p. 5056-5064
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Abstract :
[en] CONTEXT: There is an ongoing debate about whether and how fructose is involved in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). A recent experimental study showed an increased intrahepatic triglyceride (IHTG) content in mice deficient for aldolase B (aldo B-/-), the enzyme that converts fructose-1-phosphate to triose phosphates. OBJECTIVE: To translate these experimental findings to the human situation. DESIGN: Case-control study. SETTING: Outpatient clinic for inborn errors of metabolism. PATIENTS OR OTHER PARTICIPANTS: Patients with hereditary fructose intolerance, a rare inborn error of metabolism caused by a defect in aldolase B (n = 15), and healthy persons matched for age, sex, and body mass index (BMI) (n =15). MAIN OUTCOME MEASURE: IHTG content, assessed by proton magnetic resonance spectroscopy. RESULTS: IHTG content was higher in aldo B-/- patients than controls (2.5% vs 0.6%; P = 0.001) on a background of lean body mass (median BMI, 20.4 and 21.8 kg/m2, respectively). Glucose excursions during an oral glucose load were higher in aldo B-/- patients (P = 0.043). Hypoglycosylated transferrin, a surrogate marker for hepatic fructose-1-phosphate concentrations, was more abundant in aldo B-/- patients than in controls (P < 0.001). Finally, plasma beta-hydroxybutyrate, a biomarker of hepatic beta-oxidation, was lower in aldo B-/- patients than controls (P = 0.009). CONCLUSIONS: This study extends previous experimental findings by demonstrating that aldolase B deficiency also results in IHTG accumulation in humans. It suggests that the accumulation of fructose-1-phosphate and impairment of beta-oxidation are involved in the pathogenesis.
Disciplines :
Genetics & genetic processes
Author, co-author :
Simons, Nynke
DEBRAY, François-Guillaume ;  Centre Hospitalier Universitaire de Liège - CHU > Unilab > Centre de prise en charge des maladies métaboliques
Schaper, Nicolaas C.
Kooi, M. Eline
Feskens, Edith J. M.
Hollak, Carla E. M.
Lindeboom, Lucas
Koek, Ger H.
Bons, Judith A. P.
Lefeber, Dirk J.
Hodson, Leanne
Schalkwijk, Casper G.
Stehouwer, Coen D. A.
Cassiman, David
Brouwers, Martijn C. G. J.
More authors (5 more) Less
Language :
English
Title :
Patients With Aldolase B Deficiency Are Characterized by Increased Intrahepatic Triglyceride Content.
Publication date :
2019
Journal title :
Journal of Clinical Endocrinology and Metabolism
ISSN :
0021-972X
eISSN :
1945-7197
Publisher :
Oxford University Press, New York, United States - New York
Volume :
104
Issue :
11
Pages :
5056-5064
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2019 Endocrine Society.
Available on ORBi :
since 08 January 2020

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