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A series of cytotoxic neutral dicarboxylatoplatinum(II) complexes containing D(+), L(-) or DL-malate dianion and ethylenediamine or 1-ethylimidazole as ligands were examined using ATPase activity assays and the proton extrusion test. ATPase activity assays in vitro on plasma membrane H+- ATPase and on mitochondrial ATPase were carried out. The concentrations of compounds inhibiting enzyme activity...
Hyperthermia can modulate the action of many anticancer drugs, and DNA repair processes are temperature-dependent, but the character of this dependence in cancer and normal cells is largely unknown. This subject seems to be worth studying, because hyperthermia can assist cancer therapy. A 1-h incubation at 37°C of normal human peripheral blood lymphocytes and human myelogenous leukemia cell line...
Inactivation of p53 gene and overexpression of MDR1 gene are both associated with drug resistance. Previous studies have suggested that p53 gene can modulate the expression activity of MDR1 gene promoter in a promoter-CAT system. In the present study, wild-type p53 gene cDNA was introduced into a multidrug-resistant cell line, KB V200 , in which endogenous p53 gene is aberrant...
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