Abstract:
:To explore the potential efficacy of l-asparaginase treatment in acute myeloid leukaemia (AML) patients, we studied the in vitro resistance of French-American-British (FAB) subtypes of childhood AML to l-asparaginase using a methyl-thiazol-tetrazolium assay. We tested leukaemic cells obtained from 177 common acute lymphoblastic leukaemia (cALL) and 228 AML children at diagnosis. The median 70% lethal dose of l-asparaginase (LD70asp) (U/ml) was 0.46 in the cALL and 6.70 in the AML samples. The median LD70asp among each FAB subtype of AML was 0.76 (M0), 0.46 (M1), 10.00 (M2), 10.00 (M3), 1.18 (M4), 1.35 (M5) and 10.00 (M7). Type M3 samples had the highest LD70asp. The LD70asp of the M2 samples was significantly higher than that of the M1, M4 and M5 samples. When the LD70asp values were classified as low (0.016-0.159), intermediate (0.16-1.59) or high (1.6-10.00), the frequency of low, intermediate or high LD70asp among the M1 samples were similar to those among the cALL samples. In conclusion, cells from AML types M1, M4 and M5 were relatively sensitive to l-asparaginase, and M1 cells were as sensitive as those of cALL, suggesting that l-asparaginase treatment may be effective for these subtypes of AML.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Okada S,Hongo T,Yamada S,Watanabe C,Fujii Y,Ohzeki T,Horikoshi Y,Ito T,Yazaki M,Komada Y,Tawa Adoi
10.1046/j.1365-2141.2003.04703.xsubject
Has Abstractpub_date
2003-12-01 00:00:00pages
802-9issue
5eissn
0007-1048issn
1365-2141pii
4703journal_volume
123pub_type
杂志文章abstract::The influence of erythrocyte shape changes on the sedimentation rate was studied in vitro and in vivo. In vitro the highest sedimentation rate was observed with a slight degree of stomatocytosis (morphological index-0.3; i.e. one red cell out of three being a stomatocyte I). With increasing degrees of stomatocytosis t...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb00296.x
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abstract::Asparaginase (ASNase) is an important anti-leukaemic drug in the treatment of childhood acute lymphoblastic leukaemia (ALL) and non-Hodgkin lymphoma (NHL). A substantial proportion of patients develop hypersensitivity reactions with anti-ASNase neutralising antibodies, resulting in allergic reactions or silent inactiv...
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abstract::It has been suggested that the iron storage protein ferritin has a number of physiological functions not directly related to iron metabolism and a number of these relate to lymphocyte and macrophage activity. The present study demonstrates a selective distribution of ferritin on lymphocyte and macrophage surface membr...
journal_title:British journal of haematology
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abstract::To examine the role of human DNA topoisomerase IIalpha (topo IIalpha) in drug resistance, we selectively inhibited topo IIalpha gene expression in U937 human monocytic leukaemia cells stably transfected with a plasmid that allowed for Zn-mediated conditional expression of a human alpha-topo IIalpha antisense sequence....
journal_title:British journal of haematology
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abstract::To create immortal mesenchymal cell lines, we transduced primary human bone marrow mesenchymal cells with telomerase reverse transcriptase (TERT). TERT+ mesenchymal cells continued to grow for > 2 years; parallel TERT- cultures underwent senescence after 15 weeks. TERT+ mesenchymal cells did not form foci in soft agar...
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pub_type: 临床试验,杂志文章,随机对照试验
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abstract::The standard of care for patients with acute promyelocytic leukaemia (APL) relapsing after front-line treatment with arsenic trioxide (ATO)-based regimens remains to be defined. A total of 67 patients who relapsed after receiving ATO-based up-front therapy and were also salvaged using an ATO-based regimen were evaluat...
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journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::Marizomib, a natural marine product, is an irreversible proteasome inhibitor currently under investigation in relapsed-refractory multiple myeloma (RRMM) and malignant glioma. Central nervous system-multiple myeloma (CNS-MM) is a rare manifestation of extra-medullary disease with few therapeutic options, highlighting ...
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journal_title:British journal of haematology
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journal_title:British journal of haematology
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