Trypanosoma evansi: Effect of experimental infection on the osmotic fragility, lipid peroxidation and calcium-ATPase activity of rat red blood cells

Experimental Parasitology
Alfredo MijaresRamón Portillo

Abstract

Trypanosoma evansi is the causative agent of equine trypanosomoses. The disease is characterized by fever, anemia, and cachexia. Peroxidative damage of the red blood cells caused by the parasite, may contribute to the pathogenesis of the anemia seen in trypanosomoses. Consequently, we evaluated the hematocrit, the osmotic fragility of the red blood cells, the level of lipid peroxidation and the activity of the Ca-ATPase of red blood cell ghosts from rats experimentally infected with T. evansi. After 72 h inoculation, the hematocrit decreased from 49.5% to 33%; the osmotic fragility of the red blood cells was approximately 40% higher as compared to the healthy animals; and the red blood cell ghosts showed a higher level of lipid peroxidation and a lower Ca-ATPase activity than the red cell ghosts from the healthy animals. In vitro incubations of red blood cells from healthy animals with T. evansi, produced also a significant increase of the osmotic fragility of the red blood cells.

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Citations

Mar 27, 2013·Parasitology Research·Valesca AnschauLuiz Claudio Miletti
Dec 18, 2012·Clinical and Experimental Pharmacology & Physiology·Kanti Bhooshan PandeySyed Ibrahim Rizvi
Jun 14, 2016·Pathology Research International·Alpidio A Boada-SucreArmando Reyna-Bello
Dec 3, 2015·Journal of Basic and Clinical Physiology and Pharmacology·Nanacha Afifi Igbokwe, Ikechukwu Onyebuchi Igbokwe
Aug 26, 2014·Journal of Basic and Clinical Physiology and Pharmacology·Nanacha Afifi Igbokwe, Ikechukwu Onyebuchi Igbokwe

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