[en] BACKGROUND: Obese patients are frequently characterized by insulin resistance and decreased insulin-mediated glycogen synthesis in skeletal muscle. Whether they also have impaired postprandial hepatic glycogen synthesis remains unknown. AIM: To determine whether postprandial hepatic glycogen synthesis is decreased in obese patients compared to lean subjects. METHODS: Lean and obese subjects with impaired glucose tolerance were studied over 4h after ingestion of a glucose load. Hepatic uridine diphosphoglucose kinetics were assessed using 13C-galactose infusion, with monitoring of urinary acetaminophen-glucuronide isotopic enrichment to estimate hepatic glycogen kinetics. RESULTS: Estimated net hepatic glycogen synthesis amounted to 18.6 and 22.6% of the ingested load in lean and obese subjects, respectively. CONCLUSION: Postprandial hepatic glycogen metabolism is not impaired in non-diabetic obese subjects.
Disciplines :
Endocrinology, metabolism & nutrition
Author, co-author :
Paquot, Nicolas ; Centre Hospitalier Universitaire de Liège - CHU > Diabétologie,nutrition, maladies métaboliques
Schneiter, P.
Scheen, André ; Université de Liège - ULiège > Département des sciences cliniques > Diabétologie, nutrition et maladie métaboliques - Médecine interne générale
Lefebvre, Pierre ; Centre Hospitalier Universitaire de Liège - CHU > Diabétologie,nutrition, maladies métaboliques
Tappy, L.
Language :
English
Title :
Assessment of postprandial hepatic glycogen synthesis from uridine diphosphoglucose kinetics in obese and lean non-diabetic subjects.
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