Effects of Ascorbic acid on the Phototoxicity of Phenothiazines

Phenothiazines의 광독성에 미치는 Ascorbic acid의 영향

This study was conducted to investigate the effects of ascorbic add on their phototoxicity of four phenothiazine derivatives such as chloropromazine, perphenazine, trifluoperazine and thioridazine. Effects of the test compounds on RBes were monitored with a spectrophotometer by the method of Kahan et al. The extent of photohemolysis by chlorpromazine, perphenazine and thioridazine were decreased with the use of ascorbic acid. It was observed that toxic photoproducts were formed by chlorpromazine and thioridazine with preirtadiated. Although red blood cell hemolysis by preirradiated chlorpromazine was decreased with the use of ascorbic acid but thioridazine was not changed.

Phenothiazines류의 약물 중 Chlorpromazine, perhenazine, trifluoperazine, thioridazin의 광독성에 대한 ascorbic acid의 영향을 조사 연구하였다. 각 약물 농도를 $50;\mu\textrm{g}$/ml로하고 UVA(350nm, 2.5mV/cm)로 조사기간은 30분으로 하여 적혈구의 광용혈현상을 Kahn 등의 방법에 의해 spectrophotometer로 측정한 결과 Chlorpromazine, perphenazine, thioridazine에 의한 광용혈도 정도는 ascorbic acid에 의해 유의성 있게 감소되었다. 또한 적혈구를 가하기 전 각 약물을 미리 조사시켜 생성된 물질에 의한 광용혈현상의 광독성 생성물질은 chlorpromazine과 thioridazine에서 보여졌으며, chlorpromazine의 광독성 생성물질에 의한 적혈구 용혈현상만 ascorbic acid에 의해 감소되었다.