Document Detail

Insulin-like growth factor-I, inflammatory proteins, and fibrosis in subjects with nonalcoholic fatty liver disease.
MedLine Citation:
PMID:  23316084     Owner:  NLM     Status:  MEDLINE    
CONTEXT: Inflammation may have a pathogenic role in the progression of nonalcoholic fatty liver disease (NAFLD); by contrast, the role of anti-inflammatory molecules has not been addressed. Low circulating levels of the anti-inflammatory molecule IGF-I have been described in subjects with NAFLD.
OBJECTIVE: The aim of the study was to elucidate the clinical significance of IGF-I in NAFLD and its relationship with inflammatory biomarkers and fibrosis.
DESIGN AND SETTING: We conducted a cross-sectional study and in vitro experiments on hepatic HepG2 cells at the Internal Medicine and Gastrointestinal and Liver Units of the Universities of Catanzaro and Palermo.
SUBJECTS: A total of 221 individuals with NAFLD diagnosed on ultrasonography (cohort 1) and 50 subjects with biopsy-proven NAFLD (cohort 2) participated in the study.
INTERVENTION: Liver ultrasonography was performed on cohort 1, and hepatic biopsies were obtained from cohort 2.
MAIN OUTCOME MEASURES: NAFLD fibrosis and Kleiner scores were calculated. IGF-I and inflammatory biomarker plasma concentrations were assessed with specific assays. In the in vitro study, real-time RT-PCR was used to assess the mRNA expression levels of acute-phase reactants.
RESULTS: In the first cohort, circulating IGF-I levels showed an inverse correlation with NAFLD fibrosis score and inflammatory biomarkers; similarly in the second cohort, liver IGF-I mRNA levels and the fibrosis score showed a negative relationship. Finally, we showed that IGF-I was able to directly modulate the expression of acute-phase reactants, decreasing C-reactive protein and fibrinogen levels and up-regulating albumin expression in HepG2 cells.
CONCLUSIONS: The present data suggest that evaluation of circulating IGF-I and proinflammatory markers might be useful to assess comprehensively the severity of the disease in individuals with NAFLD.
Marta Letizia Hribal; Teresa Procopio; Salvatore Petta; Angela Sciacqua; Stefania Grimaudo; Rosaria Maria Pipitone; Francesco Perticone; Giorgio Sesti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2013-01-11
Journal Detail:
Title:  The Journal of clinical endocrinology and metabolism     Volume:  98     ISSN:  1945-7197     ISO Abbreviation:  J. Clin. Endocrinol. Metab.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-02-07     Completed Date:  2013-04-10     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  0375362     Medline TA:  J Clin Endocrinol Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  E304-8     Citation Subset:  AIM; IM    
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MeSH Terms
Biological Markers / blood
Cell Line
Cross-Sectional Studies
Fatty Liver / blood*,  pathology,  ultrasonography
Inflammation / blood*,  pathology,  ultrasonography
Insulin-Like Growth Factor I / metabolism*
Liver / pathology,  ultrasonography
Middle Aged
Reg. No./Substance:
0/Biological Markers; 67763-96-6/Insulin-Like Growth Factor I

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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