[The modification of a radiation lesion with 9a-homo-13-thiaprostanoids].

The radioprotective properties of 12 compounds of 9a-homo-13-thiaprostanoid series were investigated under gamma irradiation using the molecular model of beta-carotene radio-oxidation in oleic acid in vitro, erythrocyte radiomimetic model in ex vivo-in vitro system as well as in vivo radiation damage in mice. Most of these compounds stimulated the radio-oxidation of beta-carotene, however in this model two prostanoids with natural alpha-chain displayed radioprotective properties. Expressed membrane stabilizing effect of two 9a-homo-13-thiaprostanoid nor-analogues was revealed in radiomimetic model experiments. Two 10, 10-dimethyl-13-thiaprostanoids raised animal radioresistance during in vivo experiments.