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[Adenosine deaminase activity in the cerebrospinal fluid of children with acute lymphoblastic leukemia]
Insights
Adenosine deaminase activity in cerebrospinal fluid is elevated in children with acute lymphoblastic leukemia, especially during meningeal involvement. This enzyme activity can help distinguish leukemia from meningitis.
Area of Science:
- Biochemistry
- Pediatric Oncology
- Neurology
Context:
- Acute lymphoblastic leukemia (ALL) can involve the central nervous system (CNS).
- Distinguishing CNS leukemia from other conditions like meningitis is crucial for treatment.
- Adenosine deaminase (ADA) is an enzyme with potential diagnostic roles.
Purpose:
- To investigate adenosine deaminase (ADA) activity in the cerebrospinal fluid (CSF) of children with acute lymphoblastic leukemia (ALL).
- To assess if ADA activity levels can differentiate between CNS leukemia and other inflammatory conditions in the CNS.
Summary:
- ADA activity was measured in the CSF of children with ALL during different disease phases.
- Significantly higher ADA activity was observed during leukaemic meningeal involvement compared to initial ALL phases or complete remission.
- Elevated ADA levels post-relapse were also noted, but meningeal leukemia showed the highest activity, distinct from inflammatory meningitis.
Impact:
- Findings suggest ADA activity in CSF could serve as a biomarker for diagnosing CNS involvement in pediatric ALL.
- This enzyme assay may aid in differentiating leukaemic infiltrations from lymphocytic meningitis, improving diagnostic accuracy.
- Potential for earlier and more precise diagnosis of CNS leukemia, guiding timely therapeutic interventions.
Abstract:
The activity of adenosine deaminase was determined in the cerebrospinal fluid in children with acute lymphoblastic leukaemia in various phases. It was found that an evident rise of this activity occurred during leukaemic meningeal involvement as compared with the initial phase the disease or with the first complete remission. After an episode of recurrent cerebrospinal leukaemia the activity of the enzyme was also higher than during the first complete remission. Such high values as during meningeal leukaemia were not found in inflammatory cerebrospinal fluid which suggests that determinations of this enzyme could be useful for differentiation of leukaemic infiltrations in the central nervous system against lymphocytic meningitis.