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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1992-4-24
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pubmed:abstractText |
It has been reported that high doses of (dl)-5-methyltetrahydrofolate (mTHF) inhibit the growth of leukemic cell lines. We studied the effect of methotrexate (MTX) and mTHF in combination on the lymphoid cell lines BALM 3, CEM, MOLT 4 and P3HR1 by evaluating the clonogenic cell reduction in a limiting dilution assay. Cells were treated with 0.1 mM MTX for 4 h and 1 mM mTHF for 48 h. The growth of the cell lines was inhibited by 1 mM mTHF, with a clonogenic cell reduction of 3.5 log. MTX, following by mTHF after a delay of 8-24 h, caused a substantial killing of lymphoid leukemia cells, greater than the effect of either drug alone. The clonogenic cell reduction caused by the combination MTX-mTHF ranged from about 3.5 to 4.5 log, depending on the cell line studied. Normal hemopoiesis, as evaluated by primitive hematopoietic precursor colonies and granulocyte-macrophage colony-forming units (CFU-GM) was only slightly affected by the MTX-mTHF treatment at a dose and schedule which caused up to 4.5 log reduction of the leukemic cell lines. mTHF-MTX treatment could be useful in vitro for purging bone marrow cells in autologous bone marrow transplantation for acute leukemia.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0887-6924
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
6
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
131-5
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1552744-Bone Marrow,
pubmed-meshheading:1552744-Bone Marrow Cells,
pubmed-meshheading:1552744-Colony-Forming Units Assay,
pubmed-meshheading:1552744-Dose-Response Relationship, Drug,
pubmed-meshheading:1552744-Drug Therapy, Combination,
pubmed-meshheading:1552744-Humans,
pubmed-meshheading:1552744-Leukemia, B-Cell,
pubmed-meshheading:1552744-Leukemia, T-Cell,
pubmed-meshheading:1552744-Methotrexate,
pubmed-meshheading:1552744-Tetrahydrofolates,
pubmed-meshheading:1552744-Time Factors,
pubmed-meshheading:1552744-Tumor Stem Cell Assay
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pubmed:year |
1992
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pubmed:articleTitle |
Differential effect of the combination methotrexate/(dl)-5-methyltetrahydrofolate on lymphoid malignant and normal bone marrow cells.
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pubmed:affiliation |
Department of Hematology USL 10/D, Florence, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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