Nonalcoholic Steatohepatitis (NASH) Is Associated with a Decline in Pancreatic Beta Cell (β-Cell) Function

Digestive Diseases and Sciences
Mohammad S SiddiquiArun J Sanyal

Abstract

Nonalcoholic fatty liver disease (NAFLD) represents a histological spectrum ranging from benign hepatic steatosis (NAFL) to nonalcoholic steatohepatitis (NASH). NAFLD is closely associated with insulin resistance (IR), and although the role of IR in NAFLD has been an area of intense investigation, there are limited data on pancreatic β-cell function. To evaluate the pancreatic β-cell function in NAFLD using the homeostatic model assessment-β (HOMA-β) and β-cell index (BI). HOMA-β was measured in ninety-nine non-diabetic subjects with histologically confirmed NAFLD and compared to lean (age- and gender-matched) and obese (age-, gender-, and BMI-matched) controls. Using the values from an oral glucose tolerance test, BI was compared in 31 non-diabetic, non-cirrhotic subjects with NASH and gender- and BMI-matched controls. The subjects with NAFLD had higher HOMA-β compared to both lean and obese controls (43.1 vs. 9 vs. 22.1 %, respectively, P < 0.05). HOMA-β was directly related to serum alkaline phosphate, total bilirubin, and weight and inversely related to age. There was no difference in HOMA-β between subjects with NAFL and NASH. Subjects with NASH had lower β-cell function as measured by a lower BI (2.09 ± 1.64 vs. 7.74 ± 25...Continue Reading

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