title: [Study of tumor cells sensitivity in patients with acute leukemia to cytokines and their combined use with drugs in vitro by MTT analysis].
abstract: MTT analysis has yielded data on the sensitivity of leukemia cells isolated from 64 patients with acute leukemia to the cytokines G-KSF?, GM-KSF, interferon-alpha 2b and their combined use with drugs, such as cytosar, vepeside, doxorubicin, vincrastine, L-asparaginase. The mean in vitro survival of leukemia cells in children with acute lymphoblast cell leukemia (ALCL) was 1.9 times less than that in acute myeloblast cell leukemia (AMCL) (p < 0.001), that in new cases of ALL was 2.3 times less than in relapses (p = 0.024). The stimulating effect of GM-KSF on the survival rates of leukemia cells was seen in 64.7% of patients with AML. That of GM-KSF was recorded in 21.4% of cases. The survival of lymphoblast cells isolated from children with ALL did not differ greatly in the absolute majority of cases (by more than 30%) in the presence of growth factor in the medium. The cytotoxicity of XII with medium growth factor decreased in most cases. However, some cases (more frequently in AML than ALCL) displayed a higher cytotoxicity of XII, particularly cytosar in the presence of G-KSF and GM-KSFG; LC50 of Ara-C decreased by 30% or more in the presence of growth factor in 36% of patients. Incubation with interferon alpha 2b caused a reduction in the survival of leukemia cells, which was more pronounced in children with ALL. Interferon-alpha 2b caused an increase in the cytotoxic effect of XII on leukemia cells in ALL to a greater extent; cytosar, vepeside, and doxorubicin enhanced the effect by 1.47, 1.39, and 2.35 times, respectively.
authors.forename: E A
authors.initials: EA
authors.lastname: Litvinova
authors.forename: G L
authors.initials: GL
authors.lastname: Mentkevich
authors.forename: K L
authors.initials: KL
authors.lastname: Chimishkian
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D002455:Cell Division / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002648:Child; D002675:Child, Preschool; D016207:Cytokines / Q000627:therapeutic use*; D004342:Drug Hypersensitivity / Q000175:diagnosis*; D004354:Drug Screening Assays, Antitumor; D004359:Drug Therapy, Combination; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000188:drug therapy* / Q000473:pathology; D008875:Middle Aged; D012189:Retrospective Studies; D014407:Tumor Cells, Cultured
chemical_list: D000970:Antineoplastic Agents; D016207:Cytokines