Arylsulfatase (ASA) enzyme deficiency is associated with metachromatic leukodystrophy (MLD), which is a hereditary myelin metabolic disease. It has been proposed that in alcoholic subjects with abnormal ASA, the accumulation of sulfatides may lead to demyelinization and generalized cerebral atrophy. ASA may be diminished in subjects with alcoholic cirrhosis having encephalopathic manifestations. This idea has not been previously proposed. Leukocyte arylsulfatase A (ASA) activity was measured in 30 healthy male volunteers and 28 patients with alcohol-related cirrhosis. The patients were divided into two groups: patients with alcohol-related cirrhosis with hepatic encephalopathy history and patients with alcoholic cirrhosis without history of hepatic encephalopathy. Alcoholic cirrhotic patients with history of encephalopathy showed 58.21% (40.95 nmol/mg protein/h) less enzymatic activity than a control group (98.00 nmol/mg protein/h), whereas the group without history of encephalopathy showed an ASA value which was 38.2% (60.55 nmol/mg protein/h) less than the control group. The results suggest that the low ASA activity is a factor associated to the appearance of encephalopathy in patients with alcohol-related cirrhosis.
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