Home Neoplasma 2008 Neoplasma Vol.55, No.1, p.51-54, 2008

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.55, No.1, p.51-54, 2008

Title: TRAIL receptors in the serum of patients with B-cell chronic lymphocytic leukemia

Abstract: Great importance in the course of chronic B-cell lymphocytic leukemia (B-CLL) has been ascribed to cytokines belonging to the superfamily of the tumor necrosis factor (TNF), including TRAIL (TNF-related apoptosis inducing ligand) and its specific receptors: TRAIL receptor 1 (TRAIL-R1), TRAIL receptor 2 (TRAIL-R2), TRAIL receptor 3 (TRAIL-R3), TRAIL receptor 4 (TRAIL-R4) and osteoprotegerin (OPG). Both the molecule and the receptors may occur in membrane and soluble forms, except for OPG which has only a soluble form. The aim of the study was to assess the levels of sTRAIL molecule and soluble TRAIL receptors – sTRAIL-R2 and OPG in the serum of patients with B-CLL. The findings revealed reduced concentrations of sTRAIL both before and after treatment and elevated levels of sTRAIL-R2 and OPG in patients before treatment. After treatment with CC (2CdA/Cladrybin and Cyklofosfamid) and FC (Fludarabin and Cyklofosfamid) we observed an increase in sTRAIL and a decrease in sTRAIL-R2. OPG levels were found to increase after treatment with CHOP (Vincristini, Cyklofosfamid, Adriamycin and Prednisol) and they decreased after administration of Leukeran (Chlorambucyl) and CMC (2CdA/Cladrybin, Mitoxanton and Cyklofosfamid). The relationships between TRAIL and its natural regulators in the serum of BCLL patients prior to treatment may impair apoptosis of leukemic B cells. Changes in these relationships after treatment with CC and FC seem to promote enhancement of apoptosis in these cells.

Keywords: B-cell chronic lymphocytic leukemia, soluble TNF-related apoptosis-inducing ligand, soluble TNF-related apoptosis-inducing ligand receptor type 2 (sDR5), osteoprotegerin
Year: 2008, Volume: 55, Issue: 1 Page From: 51, Page To: 54

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