Abstract
After overnight-fasting, the concentration of dimethyl sulfide in expired alveolar gas (alv-DMS) was determined serially following ingestion of 2 g of DL-methionine in normal subjects and patients with liver diseases. Alv-DMS rose to a peak in 30 to 90 min, declined markedly within 3 h, and then decreased gradually. Half-disappearance times ( T 1 2 ) (mean ± S.E. min) in each experimental group were: normal ( N = 9) 61.7 ± 4.7, acute hepatitis ( N = 6) 62.5 ± 6.8, chronic hepatitis ( N = 10) 84.0 ± 13.0, and liver cirrhosis ( N = 13) 159.2 ± 30.4, respectively. Cirrhotics had a T 1 2 significantly longer than that of the other three groups: vs. normal P < 0.02, vs. acute hepatitis P < 0.05, and vs. chronic hepatitis P < 0.05. T 1 2 of alv-DMS following ingestion of dl-methionine seems to be of clinical interest.
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