Adenosin-Deaminase-Aktivität in Blutzellen
- 1 February 1979
- journal article
- research article
- Published by Springer Nature in Zeitschrift für Die Gesamte Experimentelle Medizin
- Vol. 176 (1) , 81-86
- https://doi.org/10.1007/bf01852113
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. Ein Zusammenhang zwischen dem Enzym Adenosindeaminase (ADA) und Immunfunktionen ist gesichert: Patienten mit kongenitalem Mangel der ADA weisen einen schweren kombinierten Immundefekt auf. Bei Patienten, die mit immunsuppressiven Mitteln behandelt wurden, fanden wir im Gegenteil erhöhte ADA-Enzymaktivität. Zu den bisherigen kontroversen Befunden über ADA bei akuten Leukämien trägt unser Material folgendes bei: Kinder mit akuter lymphatischer Leukämie (ALL) und akuter myeloischer Leukämie (AML) in Remission weisen normale bis erhöhte ADA-Aktivität auf, solange sie unter zytostatischer Therapie stehen. Nach Heilung der Leukämie (d. h. in Dauerremission ohne Therapie) normalisieren sich die ADA-Aktivitäten. Eine Heterogeneität innerhalb der Leukämie-Gruppen ist aber nicht ausgeschlossen. — Die zelluläre Immundefizienz bei akuter Leukämie erklärt sich aus diesen Befunden nicht.Keywords
This publication has 10 references indexed in Scilit:
- Apparent suicide inactivation of human lymphoblast S-adenosylhomocysteine hydrolase by 2'-deoxyadenosine and adenine arabinoside. A basis for direct toxic effects of analogs of adenosine.Journal of Biological Chemistry, 1979
- Overproduction of adenine deoxynucleosides and deoxynucletides in adenosine deaminase deficiency with severe combined immunodeficiency disease.Journal of Clinical Investigation, 1978
- PURINE METABOLISM IN LYMPHOCYTES FROM PATIENTS WITH PRIMARY HYPOGAMMAGLOBULINEMIA1978
- Deoxyadenosine triphosphate as a potentially toxic metabolite in adenosine deaminase deficiency.Proceedings of the National Academy of Sciences, 1978
- Adenosine deaminase activity in peripheral blood cells of patients with haematological malignanciesBritish Journal of Cancer, 1976
- Adenosine deaminase activity in chronic lymphocytic leukemia. Relationship to B- and T-cell subpopulations.Journal of Clinical Investigation, 1976
- Hereditary Severe Combined Immunodeficiency and Adenosine Deaminase DeficiencyPediatric Research, 1976
- Adenosine deaminase activity in leukaemiaBritish Journal of Cancer, 1975
- ADENOSINE-DEAMINASE DEFICIENCY IN TWO PATIENTS WITH SEVERELY IMPAIRED CELLULAR IMMUNITYThe Lancet, 1972
- Serum Adenosine Deaminase in the Differential Diagnosis of JaundiceBMJ, 1965