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- W2115270571 abstract "We have studied the serum tyrosine hydroxylase activity of tyrosinase, the key enzyme in the melanogenesis via, as a possible diagnostic factor or marker for detection, prognosis and follow-up of patients with melanoma. This activity was determined in 30 melanoma patients (MP) and in 30 healthy persons (HP) by using a radiometric method. We found mean values of 10.8+/-3.0 and 7.65+/-2.32 mU/l for serum tyrosine hydroxylase activity in MP and HP, respectively. A very significant increase in serum tyrosine hydroxylase activity was observed in MP in comparison to the enzymatic activity in HP (P < 0.00001). Although these data seem very conclusive, we wanted to know whether this test could discriminate adequately between MP and HP. In order to reach this aim, a complete statistical study was performed by using receiver operating characteristic (ROC) curve analysis. The cut-off value obtained was 8.47 mU/l. According to our results and after analytical treatment of the data, we can confirm that evaluation of tyrosine hydroxylase activity in serum could be a quick and reliable diagnostic method for detection, prognosis and follow-up in melanoma patients." @default.
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- W2115270571 date "1998-06-01" @default.
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- W2115270571 title "Serum tyrosine hydroxylase activity is increased in melanoma patients. An ROC curve analysis" @default.
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- W2115270571 doi "https://doi.org/10.1016/s0304-3835(98)00109-8" @default.
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