At present, chemotherapy is one of the principal methods of treatment of cancer. For many years, chemotherapy
is possibly the only way to control cancers that do not respond to either surgery or radiation. To date a good
number of chemotherapeutic drugs have been developed which are effective in the treatment of human cancers. But,
A few drugs have been known to be safe and promising. The most widely used chemotherapeutic drugs include methotrexate,
cyclophosphamide, 5-fluorouracil etc. In this review, the molecular basis of drug interaction of methotrexate,
cyclophosphamide and 5-fluorouracil has been studied. Understanding of the molecular basis of drug interaction
of the chemotherapeutic agents is fundamental in order to enhance the clinical effectiveness of chemotherapy as well
as to increase our knowledge of the cytotoxic effects of chemotherapeutic drugs. Increased understanding of the
pharmacokinetics and the mechanism of action also help to develop biomodulating strategies. The boundary between
the efficacy and toxicity of chemotherapeutic drugs is very narrow. So, novel approaches are needed to be formulated
in order to enhance the efficacy and to minimize the toxic effects of the chemotherapeutic agents. Though a lot of information
is needed to be learned and a lot of task is needed to be accomplished, chemotherapy can be the ultimate
and feasible way for controlling cancers if the toxic effects of chemotherapy can be reduced or minimized.
Key words: Methotrexate, Cyclophosphamide, 5-Fluorouracil, Chemotherapy, Cancer.
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