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Behaviour of leukocyte acid phosphatase in various chronic diseases
Insights
Leukocyte acid phosphatase activity varied across chronic diseases. Myeloma patients showed marked increases, while rheumatoid arthritis and hepatitis patients had moderate activity, suggesting a link to disease severity and immunoglobulin production.
Area of Science:
- Biochemistry
- Immunology
- Hematology
Background:
- Leukocyte acid phosphatases (LAPs) are enzymes found in white blood cells.
- Their activity can be altered in various disease states.
- Understanding LAP levels may provide insights into disease mechanisms.
Purpose of the Study:
- To investigate leukocyte acid phosphatase activity in patients with diverse chronic diseases.
- To correlate enzyme activity levels with specific conditions and disease severity.
- To explore potential links between LAP activity and immunoglobulin production.
Main Methods:
- Analysis of leukocyte acid phosphatase activity in 146 patients with chronic diseases.
- Utilized a modified Kaplow and Burstone method, adjusting the incubation medium's pH.
- Quantified enzyme activity across different leukocyte series and disease cohorts.
Main Results:
- Normal to slightly increased LAP activity in granulocytes of chronic myeloid leukemia patients.
- Moderate LAP activity in lymphocytes of patients with rheumatoid arthritis, chronic hepatitis, and chronic lymphocytic leukemia.
- Markedly increased LAP activity observed in patients diagnosed with myeloma.
- Enzyme activity correlated with disease severity in some conditions.
Conclusions:
- Leukocyte acid phosphatase activity is differentially expressed in various chronic diseases.
- Myeloma exhibits a significant elevation in LAP activity.
- LAP levels may serve as a potential biomarker for certain chronic conditions and immunoglobulin formation.
Abstract:
Leukocyte acid phosphatases were investigated in 146 patients with different chronic diseases. The method of investigation used was that of Kaplow and Burstone slightly modified by the authors in what regards the pH of the incubation medium. Normal or slightly increased scores were observed in the granulocytic series of patients with chronic myeloid leukemia. In patients with rheumatoid arthritis, chronic hepatitis, lupus erythematosus disseminatus and chronic lymphocytic leukemia a moderate enzymatic activity was generally observed in the lymphocyte and more marked in severe forms of disease. A marked increase of the enzyme activity was observed in patients with myeloma. The possibility of a correlation between the intensity of enzyme activity and immunoglobulin formation is discussed.