The induction of unscheduled DNA synthesis in primary cultures of urothelial cells from rats, mice, and dogs by nitrofurans and arylamines and their derivatives was examined. Electron microscopy of the culture from rat cells showed the characteristics of epithelial cells. The cultured cells were exposed to the test chemicals in a serum-free medium containing 10 mM hydroxyurea and [3H]thymidine ...

The effects of Panfuran-S on the growth of Ehrlich ascites carcinoma cells have been studied. Marked cytoxic effects were observed in the experiments in which the tumor cells were incubated with the drug. In contrast to the effects on the tumor cells in vitro, treatment with the drug failed to inhibit tumor growth in Swiss ICR/ Ha mice receiving injection of the tumor cells whether it was admin...

A food additive, furylfuramide or AF-2, which had been used in Japan since 1965 and structurally is composed of 5-nitro-2-furyl radical and acrylamide, was re-examined mainly on chronic toxicity by statistically reviewing published data. The conclusions are as follows: 1) The maximum safety dosage which shows no demonstrable change in rats must be corrected at least to 1/170 of the value which ...

Nitrofurantoin is a synthetic nitrofuran compound. It is generally used in urinary tract infections, either alone or in combination with other antibiotics. A number of adverse effects may develop in different body systems during nitrofurantoin treatment; however, concomitant pulmonary and hepatotoxicity are rare. In this paper, we present a case of acute respiratory distress syndrome and hepato...