Changes in the expression of caspases, senescence, NF-κB, pro- and antiapoptotic-related genes after in vitro exposure to pentoxifylline or cisplatin either alone or in combination. The gene expressions were determined by real-time quantitative PCR. The data are expressed as mRNA fold-increase using mRNA ribosomal as a reference gene. Experiments were conducted in triplicates and repeated three times. In all cases, SD was not > 0.08.