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Region Hovedstaden - en del af Københavns Universitetshospital
Udgivet

The insulin like growth factor system in cirrhosis. Relation to changes in body composition following adrenoreceptor blockade

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Abstract
OBJECTIVE: Circulating levels of IGF-I and IGFBP-3 are low in cirrhosis and are related to liver dysfunction. Metabolic disturbances include malnutrition with altered body composition and osteopenia. Since the effects of IGF-I may be associated to changes in body composition and bone mineral content (BMC) in cirrhotic patients, we investigated the relations between changes in the IGF-system and body composition and the effects of long-term alpha- and beta-blockade.

DESIGN: The study was designed as a combined cross-sectional and prospective randomised controlled study of 62 patients with cirrhosis. Twenty-three of these patients were randomised to treatment with beta- or combined alpha/beta-blocker for 3months. Haemodynamics, body composition, and systemic and hepatic IGF-I and IGFBP-3 levels were determined in all patients. In the subgroup changes in body composition and IGF-I/IGFBP-3 levels after 3months of beta- or combined alpha/beta-blockade were additionally examined.

RESULTS: Both the hepatic and the systemic IGF systems were suppressed and correlated with liver dysfunction and anthropometrics (p<0.05-0.001). Multivariate analyses revealed that changes in the IGF-system were determined by metabolic liver dysfunction as well as anthropometrics. In the follow-up study, hepatic venous IGF-I (p=0.05) and IGFBP-3 (p=0.02) increased after 3months only in the group who received beta-blocker. In both groups, fat body mass increased significantly after 3months (p=0.05-0.001).

CONCLUSIONS: In cirrhosis, the IGF-system is associated with both anthropometrics and synthetic capacity of the liver. Changes in IGF-I relate to changes in anthropometrics and there seems to be a differential effect depending on the type of adrenoreceptor blockade. Future longitudinal studies are needed to unravel these mechanisms in cirrhosis.

OriginalsprogEngelsk
TidsskriftGrowth Hormone & IGF Research
Vol/bind22
Udgave nummer6
Sider (fra-til)212-218
Antal sider7
ISSN1096-6374
DOI
StatusUdgivet - 2012

ID: 36419692