Estimation of zeta-chain-associated protein 70, interleukin-6 and interleukin-10 levels in sera of Iraqi newly diagnosed chronic lymphocytic leukemia

Abstract

Background: Chronic lymphocytic leukemia (CLL) is the most common type of leukemia in the Western world. The zeta-chain-associated protein (ZAP-70) an intracellular tyrosine kinase which play an important role in T-cell receptor signaling, natural killer cell activation, and early B-cell development. Interleukin-10 (IL-10) production has strong immunosuppressive effects through inhibition of Th1 type cytokines. IL-6 is a pleiotropic cytokine produced by a variety of cell types, including normal hematopoietic cells, and lymphocytes. Objectives: The objective of this study is to assess the level of ZAP-70, IL-10, and IL-6 in CLL and to correlate these levels with prognosis. Materials and Methods: A prospective cohort study carried out at the National Center of Hematology from October 2013 to September 2015. Eighteen patients with newly diagnosis of CLL compared to 19 apparently healthy controls were also involved in this study. ZAP-70 was measured by while IL-10 and IL-6 were measured using serological methods including the enzyme-linked immunosorbent assay. Results: ZAP-70 range between (24% and 90%) with a mean of 46.89 ± 19.15, two patients out of 18 were negative ( Conclusion: ZAP-70 level was higher in CLL patients than control and immunochemotherapy can normalize this which indicated good response to treatment. On the other hand, IL6 and IL10 were also higher in patients with CLL but not affected by therapy.