https://www.selleckchem.com/products/kc7f2.html Mutation of the APC gene is not necessarily indicative of higher risk for baseline hearing loss in the pediatric population. Clinical significance of antitumour drugs is limited by multidrug resistance (MDR). We examined the effect of bioreductive activation of the anthracyclines, doxorubicin (DOX) and pirarubicin (PIRA), by cytochrome P450 reductase (CPR) on triggering apoptosis of leukaemia HL60 cells and their MDR counterparts. Cell cycle and FAS expression were investigated by flow cytometry. DNA fragmentation was examined by electrophoretic analysis and caspase-3/8 activities were determined colorimetrically. Non-activated and CPR-activated forms of DOX and PIRA (IC ) had similar efficacy in provoking G /M arrest of sensitive HL60 as well as resistant HL60/VINC and HL60/DOX cells and in causing DNA degradation. Interestingly, HL60/VINC cells were more prone to apoptosis induced by all studied forms of these drugs. However, no change in Fas expression was observed. Bioreductive activation of DOX and PIRA does not affect their ability to induce apoptosis of sensitive and resistant HL60 leukaemia cells. Bioreductive activation of DOX and PIRA does not affect their ability to induce apoptosis of sensitive and resistant HL60 leukaemia cells. The current study aimed to evaluate the clinical utility of the levels of the C-X-C-motif chemokine receptor-2 (CXCR-2) serum receptor in comparison to the carcinoembryonic antigen (CEA) tumor marker and - the C-reactive protein (CRP) inflammatory marker in the diagnosis and prognosis of colorectal cancer (CRC). Our study comprised 59 patients with CRC and 46 healthy subjects. Serum concentrations of the analyzed proteins were measured using enzyme-linked immunosorbent assay, chemiluminescent microparticle immunoassay and immunoturbidimetric methods. Serum levels of CXCR-2 were lower, while those of CEA and CRP were significantly higher in CRC patients in comparison to the control