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Updated: Jul 11, 2026
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Optimized Analysis of In Vivo and In Vitro Hepatic Steatosis
Published on: March 11, 2017
Post-load insulin resistance is an independent predictor of hepatic fibrosis in virus C chronic hepatitis and in
G Svegliati-Baroni1, E Bugianesi, T Bouserhal
1Department of Gastroenterology, Polytechnic University of Marche, Ancona, Italy.
Gut
|March 30, 2007
Summary
Post-load insulin resistance, measured by the oral glucose insulin sensitivity (OGIS) index, is a better predictor of severe hepatic fibrosis in non-alcoholic fatty liver disease (NAFLD) and chronic hepatitis C (CHC) patients than basal insulin resistance (HOMA). OGIS helps identify patients at risk of progressive liver disease.
Area of Science:
- Hepatology
- Endocrinology
- Metabolic Syndrome
Background:
- Insulin resistance is a key risk factor for hepatic fibrosis in non-alcoholic fatty liver disease (NAFLD) and chronic hepatitis C (CHC).
- Existing methods for assessing insulin resistance have not been evaluated for their impact on hepatic fibrosis prediction.
- Hepatic steatosis can be exacerbated by insulin resistance, further contributing to liver fibrosis.
Purpose of the Study:
- To compare the predictive value of different insulin resistance measures for hepatic fibrosis in NAFLD and CHC.
- To determine the independent contribution of steatosis, metabolic abnormalities, and insulin resistance to fibrosis severity.
- To evaluate basal (HOMA) and post-load (OGIS) insulin sensitivity parameters.
Main Methods:
- A study involving 90 CHC and 90 pair-matched NAFLD patients.
- Assessment of basal insulin resistance using the Homeostasis Model Assessment (HOMA).
- Evaluation of post-load insulin sensitivity with the Oral Glucose Insulin Sensitivity (OGIS) index and metabolic syndrome features.
- Correlation of these parameters with liver histopathology findings.
Main Results:
- Post-load insulin resistance (OGIS) was more prevalent (67.8%) than basal insulin resistance (HOMA) (57.8%) in NAFLD patients.
- OGIS independently predicted severe fibrosis in both NAFLD and CHC patients, irrespective of steatosis.
- Lower OGIS values (<25th percentile) significantly increased the likelihood of severe fibrosis (1.5-2 fold) and were more sensitive and specific than HOMA for identifying fibrosis.
Conclusions:
- Post-load insulin resistance, specifically OGIS, is strongly associated with severe hepatic fibrosis in both NAFLD and CHC.
- The OGIS index is a more effective tool than HOMA for identifying patients with severe liver fibrosis.
- OGIS measurement can aid in identifying individuals at risk for progressive liver disease in NAFLD and CHC.
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