title: The analysis of correlations between drug resistance and clinical/laboratory measures found in a group of children with all treated by ALL-BFM 90 protocol.
abstract: This study was designed to assess the predictive value of an MTT (3-[4,5-dimethylthiazol-2,5-diphenyl] tetrazolium bromide) in vitro assay for the evaluation of leukemic cell resistance/sensitivity to cytotoxic drugs, and to compare these results with clinical and laboratory parameters in cases of childhood acute lymphoblastic leukemia (ALL).The chemoresistance of leukemic cells was ascertained by means of an MTT assay in 32 previously untreated children with ALL. The children were treated using the protocol ALL-BFM 90. Statistical correlations were made between in vitro drug resistance to anti-cancer drugs: prednisolone (PRED), vincristine (VCR),daunorubicin (DNR), etoposide (VP-16) and cytosine arabinoside (ARA-C) and in vivo clinical and laboratory parameters: age, sex, risk factor (RF), leukocytes (WBC)and absolute number of blast cells (BC) at diagnosis (BC0), BC at day 8 (BC8), the percentage of blast cells in bone marrow at day 15 (BM15) and at day 33 (BM33),and leukocyte surface antigens CD3, CD4, CD5, CD8, CD10, CD19, CD20, HLADR.
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Palacky University and Faculty Hospital, Olomouc, Czech Republic.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Mihal
authors.forename: Marian
authors.initials: M
authors.lastname: Hajduch
authors.forename: Vera
authors.initials: V
authors.lastname: Noskova
authors.forename: Anna
authors.initials: A
authors.lastname: Janostakova
authors.forename: Maria
authors.initials: M
authors.lastname: Safarova
authors.forename: Miroslav
authors.initials: M
authors.lastname: Orel
authors.forename: Galina
authors.initials: G
authors.lastname: Kouzmina
authors.forename: Jan
authors.initials: J
authors.lastname: Stary
authors.forename: Bohuslav
authors.initials: B
authors.lastname: Blazek
authors.forename: Dagmar
authors.initials: D
authors.lastname: Pospisilova
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001215:Asparaginase / Q000627:therapeutic use*; D002648:Child; D002675:Child, Preschool; D004396:Coloring Agents; D003520:Cyclophosphamide / Q000627:therapeutic use*; D003561:Cytarabine / Q000627:therapeutic use*; D003630:Daunorubicin / Q000627:therapeutic use*; D019008:Drug Resistance, Neoplasm; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D015122:Mercaptopurine / Q000627:therapeutic use*; D008727:Methotrexate / Q000627:therapeutic use*; D015999:Multivariate Analysis; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000188:drug therapy*; D011237:Predictive Value of Tests; D011241:Prednisone / Q000627:therapeutic use*; D012074:Remission Induction; D012737:Sex Factors; D013778:Tetrazolium Salts; D013844:Thiazoles; D014750:Vincristine / Q000627:therapeutic use*
chemical_list: D004396:Coloring Agents; D013778:Tetrazolium Salts; D013844:Thiazoles; D003561:Cytarabine; D014750:Vincristine; D003520:Cyclophosphamide; D015122:Mercaptopurine; D001215:Asparaginase; C022616:thiazolyl blue; D011241:Prednisone; D008727:Methotrexate; D003630:Daunorubicin