Novel approaches to intraperitoneal drug delivery.

The prolonged continuous intraperitoneal infusion of cytoarabin was studied in 28 courses. Only 9 courses were completed for the full period of 3 weeks. No cytoarabin was detected in the plasma of patients on any of these courses. The combination of intraperitoneal administration of methotrexate and dipyridamole did not show a synergistic interaction of these 2 substances. However, the addition of dipyridamole to etoposide showed a clear synergy between these 2 substances studied on a human ovarian carcinoma cell line.