aim: the healthy ranges for serum alanine aminotransferase (alt) levels are less well studied. the aim of this study was to define the upper limit of normal (uln) for serum alt levels, and to assess factors associated with serum alt activity in apparently healthy blood donors. methods: a total of 1939 blood donors were included. alt measurements were performed for all cases using the same labor...

abstract bckground: patients with obstructive sleep apnea (osa) are at risk of developing the fatty liver as a result of being overweight. several studies suggest that osa per se could be a risk factor for liver injury and ischemic hepatitis with osa. the osa is an independent risk factor for insulin resistance. therefore, we investigated liver enzymes and insulin resistance in patients with os...

Aspartate: 2-oxoglutarate aminotransferase from the anaerobic protozoon Trichomonas vaginalis was purified to homogeneity and characterized. It is a dimeric protein of overall Mr approx. 100000. Only a single isoenzyme was found in T. vaginalis. The overall molecular and catalytic properties have features in common with both the vertebrate cytoplasmic and mitochondrial isoenzymes. The purified ...