title: [Adenosine deaminase activity in blood cells; influence of cytostatic therapy in patients with acute leukemia and with renal transplants (author's transl)].
abstract: A causal relation between the enzyme, adenosine deaminase (ADA), and immune dysfunction is well known: patients with congenital inactivity of ADA invariably suffer of severe combined immunodeficiency. In contrast, we found in patients treated with immunosuppressive drugs increased ADA enzyme activity. Previous findings on ADA activity in acute leukemias are until now controversial. We found normal to increased ADA activity in children with acute lymphatic leukemia (ALL) and acute myeloid leukemia (AML) in remission as long as they were treated with cytostatic drugs. In the group of cured leukemics (in continuous remission after suspension of the therapeutic regimen) the ADA activities were normal. These findings do not exclude a heterogeneity within the leukemia group. They do not explain the signs of cellular immunodeficiencies well known in patients with acute leukemias.
mesh_terms: D000243:Adenosine Deaminase / Q000097:blood*; D000293:Adolescent; D000328:Adult; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D004789:Enzyme Activation / Q000187:drug effects; D004912:Erythrocytes / Q000201:enzymology*; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D016030:Kidney Transplantation; D007945:Leukemia, Lymphoid / Q000201:enzymology*; D015470:Leukemia, Myeloid, Acute / Q000201:enzymology*; D008297:Male; D009700:Nucleoside Deaminases / Q000097:blood*; D012075:Remission, Spontaneous
chemical_list: D000970:Antineoplastic Agents; D007166:Immunosuppressive Agents; D009700:Nucleoside Deaminases; D000243:Adenosine Deaminase
vernacular_title: Adenosin-Deami ase-Aktivität inBlutzellen; Einfluss der zytostatischen Therapie bei Patienten mit akuter Leukämie und mit Nierentransplantaten.