Serum concentrations of human insulin-like growth factor-1 and levels of insulin-like growth factor-binding protein-5 in patients with nonalcoholic fatty liver disease: association with liver histology

Department of Gastroenterology, Istanbul Goztepe Education and Research Hospital, Istanbul, Turkey.
European journal of gastroenterology & hepatology (Impact Factor: 2.15). 12/2011; 24(3):255-61. DOI: 10.1097/MEG.0b013e32834e8041
Source: PubMed

ABSTRACT In this study, we aimed to investigate the relationship between the histological features of nonalcoholic fatty liver disease (NAFLD) and serum insulin-like growth factor-1 (IGF-1) and insulin-like growth factor-binding protein-5 (IGFBP-5) to determine the usefulness of this relationship in clinical practice.
Serum samples were collected from 92 patients with biopsy-proven NAFLD and 51 healthy controls and serum levels of IGF-1 and IGFBP-5 were assayed by enzyme-linked immunosorbent assay.
Serum IGFBP-5 levels were correlated with liver steatosis, fibrosis, and nonalcoholic steatohepatitis scores. IGF-1 levels were significantly decreased in patients with moderate-to-severe fibrosis compared with patients with no or mild fibrosis.
Serum IGFBP-5 levels may be useful to differentiate both advanced fibrosis and definite nonalcoholic steatohepatitis from other NAFLD groups. Also, serum IGF-1 levels may be useful to differentiate advanced fibrosis in patients with NAFLD.

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