Nonalcoholic Steatohepatitis (NASH) is associated with progressive liver disease, fibrosis, and cirrhosis. Although the cause of NASH is unknown, it is often associated with obesity, type 2 diabetes, and insulin resistance. At present, there are no approved treatments for NASH patients, but an experimental approach has focused on improving their insulin sensitivity. Metformin is one of the most commonly used medications for the treatment of diabetes. The purpose of this study is to determine whether the medical problems of NASH patients, specifically liver damage, improves when their insulin sensitivity is enhanced with metformin. The study will last 3 to 5 years and will enroll up to 30 patients. Participants will undergo a complete medical examination, a series of lab tests, and a liver biopsy. They will then start taking a single 500-mg tablet of metformin once a day for 2 weeks, then the same dosage twice a day for 2 more weeks, if they tolerate the first dosage. The dosage will increase to 1,000 mg twice a day for the remaining 44 weeks of the study. After 1 year, participants will undergo a repeat medical examination and liver biopsy.
Description: Patients under went liver biopsy, metabolic profiling and imaging studies before and at the end 48 weeks of metformin (2000 mg/day) therapy. The primary endpoint is a three point improvement in the histological NASH activity index with a decrease in at least two of the component scores and no worsening of fibrosis or increase in Mallory bodies.Measure: Change in the Histological NASH Activity Index at 48 Weeks Compared With Baseline (Number of Participants in Each Change Category) Time: from baseline to 48 Weeks
Description: Alanine transaminase <42 U/L is considered normalMeasure: Change in Serum Alanine Aminotransferase (ALT) Levels From Baseline (Number of Participants in Each Change Category) Time: from baseline to 48 weeks
Description: HOMA-IR is calculated from Fasting Glucose and Fasting InsulinMeasure: Change in Insulin Sensitivity (Glucose Tolerance, Homeostatic Model Assessment of Insulin Resistence (HOMA-IR)) From Baseline Time: from baseline to 48 weeks
There are 2 SNPs
7. Hemochromatosis as defined by presence of 3+ or 4+ stainable iron on liver biopsy and homozygosity for C282Y or compound heterozygosity for C282Y/H63D. --- C282Y ---
7. Hemochromatosis as defined by presence of 3+ or 4+ stainable iron on liver biopsy and homozygosity for C282Y or compound heterozygosity for C282Y/H63D. --- C282Y --- --- H63D ---