Level and Activities of Antioxidants in Intestine of Larvae Galleria mellonella L.(Lepidoptera,Pyralidae) at Peroral Infestation by Bacteria Bacillus thuringiensis ssp.galleriae

摘要

In intestine of larvae Galleria mellonella L.(Lepidoptera,Pyralidae) there were revealed changes of activities of enzymatic antioxidants-superoxide dismutase (SOD),glutathione S-trans-ferase (GT),and catalase and of concentrations of non-enzymatic antioxidants-oxidized and reduced thiols (RSSR/RSH) during development of bacterial infection causedby bacteria Bacillus thuringiensis ssp.galleriae,strain 69-6 (BT).An increase of the activities of SOD and GT as well as of the ratio of oxidized to reduced thiols were shown alongside with a decrease of catalase activity in larvae infestated with BT during the experiment.This seems to be due to that during the pathological process,changes of the ratio of components of antioxidant system take place.It is suggested that changes in the antioxidant system of larvae G.mellonella can occur during the "oxidative stress" accompanying destructive processes in the intestine at the period of development of bacterial infection.