Aromatase activity in human hepatocellular carcinoma. Relationship with the degree of histologic differentiation.
1993
Human hepatocellular carcinomas (HCC) were examined aromatase activity, an enzyme that converts androgen into estrogen. Such activity was detected in all 13 specimens of HCC (mean activity, 120 fmol/30 min/mg microsomal protein). The activity tended to be lower in the HCC tissue than in the surrounding liver tissue (mean activity, 230 fmol/30 min/mg microsomal protein), although it was higher in the HCC tissue from three of eight patients with Edmondson's Grade 2 disease. This relationship was not found in the five with Grade 3 disease
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