Blood, 1958, Vol. 13, No. 7, pp. 652-664.
© 1958 American Society of Hematology, Inc.
Further Research on the Activity of Ribonucleases in the
Blood and Urine of Patients Suffering from
Proliferative Hemocytopathia
J. ALEKSANDROWICZ 1,
J. URBANCZYK 1,
ALEKSANDRA OSTROWSKA 1, and
J. SIERKO 1
1 Third Medical Clinic, Academy of Medicine, Cracow, Poland (Director Prof.
Dr. J. Aleksandrowicz).
1. A simple quantitative method (based on McCarty’s method) of measuring the RN-ase activity in urine and blood is presented.
2. The RN-ase activity was examined in the blood and urine of patients
suffering from chronic granulocytic leukemia, myeloblastic leukemia, lymphatic leukemia, granulocytopenia, lymphogranulomatosis, and in cases of
infectious disease with an increased leukocytosis.
3. The RN-ase activity in the urine is increased in chronic granulocytic
leukemia, while the RN-ase activity in the blood serum remains unchanged.
In other diseases, in spite of an increased or decreased leukocytosis, no essential changes in the RN-ase activity in the urine and blood serum have
been observed, which indicates that there is no close relationship between
the number of leukocytes in the peripheral blood and the RN-ase activity
in the 24-hour sample of urine.
Submitted on April 11, 1957
Accepted on January 28, 1958
