Assay for citrovorum factor (NSC-3590) in the presence of methotrexate (NSC-740)
Mehta, B.M.; Hutchison, D.J.
Cancer ChemoTherapy Reports 59(5): 935-937
1975
ISSN/ISBN: 0069-0112 PMID: 1081908 Document Number: 95467
Treatment of certain malignancies with high-dose methotrexate/citrovorum factor rescue has recently been adopted as an effective regimen. A microbiologic assay capable of detecting citrovorum factor in the presence of massive amounts of methotrexate has been developed using a strain of Pediococcus cerevisiae resistant to methotrexate. The assay described in this paper is an inexpensive and rapid method of studying the distribution kinetics of citrovorum factor.