10.22376/ijpbs.2019.10.1.p1-12 Volume 6 Issue 4 2015 (October - December) The study was aimed for evaluation of glutathione-related enzyme activity in rats' testes and epididymis at an acute intoxication with a deltamethrin. The study was carried out on 24 male Wistar strain rats of body weight 240±10g arranged into 2 groups – control and test ones each of 12 specimens. The test group was exposed to an acute deltamethrin intoxication in a dose of 43.5 mg/kg per body wt. The acute deltamethrin intoxication is accompanied by the accumulation of uric acid and malondialdehyde associated with the lowering of glutathione level and glutathione peroxidase, glutathione reductase, glutathione S-transferase and gamma-glutamyl transferase activation in the testes and epididymis of rats. Activation of glutathione-related enzymes in the reproductive organs of rats exposed to an acute deltamethrin intoxication was due to the activation of free radical processes caused by the intensification of purine catabolism. E.A. CHIGRINSKI, V.D. CONWAY, L.K. GERUNOVA AND T.V. GERUNOV Pesticides, deltamethrin, glutathione, testes, epididymis 340-344