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  • Title: Safe and effective treatment of diabetes mellitus associated with chronic liver diseases with an alpha-glucosidase inhibitor, acarbose.
    Author: Kihara Y, Ogami Y, Tabaru A, Unoki H, Otsuki M.
    Journal: J Gastroenterol; 1997 Dec; 32(6):777-82. PubMed ID: 9430016.
    Abstract:
    Glucose intolerance and diabetes mellitus are both prevalent in patients with chronic liver diseases. We examined the efficacy and systemic safety of therapy with an alpha-glucosidase inhibitor, acarbose, in diabetes mellitus associated with chronic liver diseases. Twenty patients with chronic hepatitis or liver cirrhosis and overt diabetes mellitus received acarbose (taken orally) for 8 weeks. The initial dosage of acarbose was 50 mg three times daily, taken before meals; this was increased to 100 mg three times daily after 2 weeks. The mean fasting plasma glucose level was 173.7 +/- 18.6 mg/dl (mean +/- SE) at entry, and was significantly decreased to 132.9 +/- 7.5 mg/dl (P < 0.05) after 8 weeks of acarbose treatment. The improved glycemic control was reflected by a significant decrease in glycosylated hemoglobin (HbA1c) from 7.2 +/- 0.3% at entry to 6.3 +/- 0.2% (P < 0.05) after 8 weeks. Serum levels of both aspartate and alanine aminotransferases fluctuated during acarbose treatment, probably due to the natural course of chronic liver diseases, but the mean values had decreased after 8 weeks of treatment. Plasma ammonia levels increased, from 61.3 +/- 10.7 micrograms/dl to 71.1 +/- 9.6 micrograms/dl after 8 weeks of acarbose treatment but the increase was not significant. Clinically significant elevation of plasma ammonia concentration was seen in 2 cirrhotic patients (121 and 124 micrograms/dl); this was asymptomatic and gradually returned to the normal range despite continuous acarbose treatment in one patient, and was reversed after the withdrawal of acarbose with the concomitant administration of lactulose in the other patient. No other blood tests results, including albumin, cholinesterase, and prothrombin time, or lipid profile and nutritional status, in terms of rapid turnover proteins, prealbumin, retinol binding protein, and transferin, were altered throughout the study period. These results indicate that diabetes mellitus associated with chronic liver diseases may be safely and effectively treated with acarbose. However, clinicians must be aware of the possibility of hyperammonemia when they prescribe acarbose for patients with diabetes mellitus and advanced liver cirrhosis.
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