Effect of fenbenzyl and fenbendazole on peroxide intensity oxidation of lipids in the blood of dogs in experimental toxocariasis

Abstract

Toxocariasis is a chronic helminthic disease caused by the larval stages of the nematode Toxocara canis. The problem of toxocariasis is important for both humane and veterinary medicine. Therefore, the aim of the study was to investigate the effect of fenbenzyl and fenbendazole on the intensity of lipid peroxidation in the blood of dogs during experimental infestation with the pathogen toxocariasis. The experiments were performed on 18 dogs, two to four months of age, and three groups of six animals were formed in each: control and two experimental groups. Puppies of all groups were experimentally infected with the pathogen toxocariasis at a dose of 5.000 invasive T. canis eggs per kg of body weight. The control group of dogs was as untreated control. Puppies of the first experimental group were fed the drug “Fenbendazole” at a dose of 150 mg per 3 kg of animal weight once a day for three days in a single dose. Puppies of the second experimental group were fed the drug “Fenbenzyl” at a dose of 350 mg per 3 kg of animal weight once a day for three days. In the clinical manifestation of the disease, toxocariasis secretes metabolic products that promote the formation of large amounts of free radicals, which in turn enhance the initiation of lipid peroxidation processes. With the use of fenbendazole and fenbenzyl, a probable decrease in these products was found starting from the 15th day of the experiment. It should be noted that the lowest level of diene conjugates and TBA-active products was in the blood of dogs of the second experimental group at 25 and 30 days of the experiment. Inhibition of lipid peroxidation processes in the treatment of dogs with fenbenzyl is due to the activation in animals of metabolic processes involving enzymes, including antioxidant enzymes that catalyze the processes of peroxidation and phosphorylation, as well as enhancing erythropoietic function. On the 30th day of the experiment, the level of diene conjugates in the blood of the second experimental group was 0.29 ± 0.02 IU/ml, and TBA-active products – 25.2 ± 0.40 μmol/l.