[Effect of products of radiation-induced free radical fragmentation of phospholipids and temperature on lipid membranes].

Thermotropic behavior of liposomes exposed to gamma-radiation was studied by differential scanning microcalorimetry. It was found that the peak corresponding to the gel-liquid crystal transition for liposomes composed of bovine brain sphingomyelin and dipalmitoyl phosphatidylglycerol broadened and shifted toward the high-temperature region. No effect of irradiation on dipalmitoyl phosphatidylcholine liposomes was observed.