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Active efflux of daunorubicin and adriamycin in sensitive and resistant sublines of P388 leukemia.
TLDR
There is an active outward transport mechanism for anthracyclines in P388 leukemia cells and that enhanced activity of this efflux process renders cells highly resistant to the cytostatic and cytotoxic effects of ADR and DAU. Expand
Evaluation of antitumor activity in a human breast tumor/nude mouse model with a special emphasis on treatment dose
TLDR
The results agree with the reported clinical results compared with those with MTD, suggesting the importance of the use of clinically equivalent doses in the evaluation of antitumor efficacy in a human tumor/nude mouse system. Expand
Induction of hepatic P-glycoprotein enhances biliary excretion of vincristine in rats.
TLDR
The contention that the induction of hepatic P-glycoprotein on the bile canalicular membrane function sas a transporter not only in the isolated membrane but also in the more physiological perfused liver system is supported. Expand
In vivo circumvention of vincristine resistance in mice with P388 leukemia using a novel compound, AHC-52.
TLDR
The results suggest that combination chemotherapy using a sensitizing agent such as AHC-52 will be effective in not only circumvention of multidrug resistance but also retardation of its occurrence. Expand
Uptake and retention of adriamycin and daunorubicin by sensitive and anthracycline-resistant sublines of P388 leukemia.
TLDR
These anthracycline-resistant cell lines are resistant by virtue of decreased retention of the drugs, particularly for adriamycin and daunorubicin. Expand
Kinetic analysis of hepatobiliary transport of vincristine in perfused rat liver. Possible roles of P-glycoprotein in biliary excretion of vincristine.
TLDR
The concentrative excretion of vincristine into the bile and its selective inhibition by a moderate concentration of verapamil provide indirect evidence for the contribution of P-glycoprotein to the biliary excretion in a perfused rat liver system. Expand
Reduced Activity of Anabolizing Enzymes in 5‐Fluorouracil‐resistant Human Stomach Cancer Cells
The mechanism of resistance to 5‐fluorouracil (5‐FU) was studied with NUGC‐3/5FU/L, a human stomach cancer cell line which had acquired resistance as a consequence of repeated 5‐day exposures toExpand
Reversal of resistance to vincristine in P388 leukemia by various polycyclic clinical drugs, with a special emphasis on quinacrine.
TLDR
Quinacrine, an antimalarial drug which had the greatest effect on vincristine uptake and relatively low host toxicity, exhibited potent therapeutic synergism in combination with vINCristine in resistant leukemia-bearing mice. Expand
Antitumor activity of 7-n-(p-hydroxyphenyl)-mitomycin C in experimental tumor systems.
TLDR
M-83 was as effective as MMC against Lewis lung carcinoma at dose levels giving the same degree of toxicity and cytotoxic effects of M-83 against leukemia P388 and fibrosarcoma Meth 1 cells were similar to and stronger than those of MMC, respectively. Expand
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