TIN ETIOPURPURIN DICHLORIDE-SENSITIZED LIPID PHOTOOXIDATION OF ERYTHROCYTE MEMBRANES
- 1 November 1990
- journal article
- research article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 52 (5) , 987-991
- https://doi.org/10.1111/j.1751-1097.1990.tb01815.x
Abstract
Tin(IV) etiopurpurin dichloride (SnET2 .cntdot. 2Cl) is a photosensitizer which has been shown to be an effective photodynamic agent for the treatment of transplantable animal tumors in vivo. The purpose of this study was to understand the effect of SnET2 .cntdot. 2Cl on membrane lipid peroxidation. When erythrocyte membranes were exposed to visible light in the presence of SnET2 .cntdot. Cl, lipid peroxidation was observed. An accumulation of lipid hydroperoxides and an increase in lipid fluorescence were also observed. This layer chromatography of lipid extracts from photooxidized membrane revealed photoperoxide products derived from phospholipid. Investigations into the mechanism(s) of lipid peroxidation by SnET2 .cntdot. 2Cl and light-sensitized membranes were also performed. Results indicate that single oxygen (1O2) plays a major role in lipid peroxidation.This publication has 30 references indexed in Scilit:
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