Standard Blood Tests Indicate Changes of Toxocariasis in Carnivores


This study presents the main changes in the biochemical and hematological blood parameters of dogs and cats infected with toxocara. Presented data are based on the animal’s age and welfare. The authors conclude that the pattern of hematological disorders is most pronounced in young animals and proceeds with signs of general intoxication and sensibilizationof the body, hypoxia, anemia and damage to the internal organs (liver and pancreas).

Keywords: hematological studies, biochemical studies, toxocariasis, Toxocara canis, T. cati

[1] Deplazes, P., et al. (2011). Role of Pet Dogs and Cats in the Transmission of Helminthic Zoonoses in Europe, with a Focus on Echinococcosis and Toxocarosis. Veterinary Parasitology., vol. 182, pp. 41–53. doi: 10.1016/j.vetpar.2011.07.014.

[2] Lee, A. C., et al. (2010). Epidemiologic and Zoonotic Aspects of Ascarid Infections in Dogs and Cats. Trends in Parasitology., vol. 26, pp. 155–61. doi: 10.1016/

[3] Panova, O. A., Glamazdin, I. G. and Spiridonov, S. E. (2015). Epidemiological Aspects of Animal Toxocariasis in a Megalopolis. Medical Parasitology and Parasitic Diseases., vol. 3, pp. 39–41.

[4] De Silva, N. R., et al. (2003). Soil-Transmitted Helminth Infections: Updating the Global Picture. Trends in Parasitology., vol. 19, issue 12, pp. 547–51.

[5] Rebar, A. H., et al. (2001). Guide to Hematology in Dogs and Cats. Teton: New Media, p. 264.

[6] Harvey, J. W. (2012). Veterinary Hematology: A Diagnostic Guide and Color Atlas. Saunders/Elsevier, St. Louis, MO , p. 360.

[7] Mikhin, A. G. (2004). Oxocariasis of a Dog: Epizootology, Immuno-Diagnostics, Pathomorphology, Treatment. PhD thesis in Veterinary Sciences, Nizhny Novgorod, p. 119.

[8] Demin, V. A. (2007). Toxocariasis of the Dog and the Improvement of Measures to Combat It. PhD thesis in Veterinary Sciences, Moscow, p. 122.

[9] Akimova, S. A. (2008). Host-Parasitic Relationships and Dynamics of Hematological Parameters in Dogs with Toxocariasis. Bulletin of the Lower Volga Agro-University Complex: Science and Higher Professional Education, .vol. 2, issue 10, pp. 89–91.

[10] Zajac, A. M. and Conboy, G. A. (2012). Veterinary Clinical Parasitology, 8rd ed. Wiley-Blackwell, Chichester, p. 368.

[11] Fyfe, J. C. (2004). The Functional Cobalamin (Vitamin B12) – Intrinsic Factor Receptor is a Novel Complex of Cubilin and Amnionless. Blood., vol. 103, pp. 1573–9. doi: 10.1182/blood-2003-08-2852

[12] Hall, E., Simpson, J. and Williams, D. (2010). Gastroenterology of Dogs and Cats. Moscow: Aquarium Print, p 408.

[13] Reynolds, E. (2006). Vitamin B12, Folic Acid, and the Nervous System. The Lancet. Neurology, vol. 5, pp. 949–60. doi: 10.1016/S1474-4422(06)70598-1

[14] Lutz, S., et al. (2013). Clinical and Laboratory Findings in Border Collies with Presumed Hereditary Juvenile Cobalamin Deficiency. Journal of the American Animal Hospital Association. vol. 49, pp. 197–203. doi: 10.5326/JAAHA-MS-5867

[15] Magnaval, J-F., et al. (2001). Highlights of Human Toxocariasis. The Korean journal of parasitology., vol. 39, issue 1, pp. 1–11. doi: 10.3347/kjp.2001.39.1.1

[16] Chala, I. V. and Bahur, T. I. (2016). Biochemical Changes and Redox Potential of Blood of Dogs with Toxocariasis. In Parasitic Systems and Parasitocenoses of Animals. Vitebsk: VGAVM, vol. 5, pp. 189– 191.

[17] Kondrakhin, I. P., Kurilov, N. V. and Malakhov, A. G. (1985). Clinical Laboratory Diagnostics in Veterinary Medicine, Moscow: Agropromizdat, p. 287.