Survey of the effect of adding Fluosol-DA 20%/O2 to treatment with various chemotherapeutic agents.

The tumor growth delays (TGDs) observed with a series of antineoplastic agents with or without Fluosol-DA and carbogen breathing (95% oxygen, 5% carbon dioxide) in the FSaIIC fibrosarcoma are shown. All but two of eleven alkylating agents examined showed some degree of positive effect by the addition of Fluosol-DA and carbogen breathing to drug treatment. The largest effects were seen with busulfan and procarbazine. Melphalan and the nitrosoureas, carmustine, lomustine, semustine, and chlorozotocin, gave increases in TGD ranging from 2- to 6-fold with the addition of Fluosol-DA and carbogen breathing. Modest increases were seen with cytoxan and dacarbazine. Cisplatin showed no additional TGD with Fluosol-DA and carbogen breathing, and mitomycin showed a negative effect. The addition of Fluosol-DA and carbogen breathing to bleomycin treatment increased the TGD produced by 5- to 6-fold compared to the drug alone. With vincristine and etoposide at three different doses, TGDs increased 2.4- to 3-fold in combination with Fluosol-DA and carbogen breathing. Increases of 1.3- to 1.4-fold in the TGD were observed with methotrexate and 5-fluorouracil with Fluosol-DA and carbogen breathing. Adding Fluosol-DA and carbogen breathing to treatment with several of the drugs examined resulted in significant enhancement of TGD and therefore may lead to an improved therapeutic outcome when added to certain currently used clinical regimens.