Pathogenesis of Trypanosoma evansi infection in dogs and horses: hematological and clinical aspects

Ciência Rural

Domingos, Luzimari Borges da Silveira²  Dávila, Alberto Martin Rivera²  Ximenes, Flora Auxiliadora²  Herrera, Heitor Miragaia¹  Silva, Roberto Aguilar Machado Santos¹ 

[1] Empresa Brasileira de Pesquisa Agropecuária, Corumbá, Brazil;Universidade Federal de Mato Grosso do Sul, Corumbá, Brazil

关键词: trypanosomosis;    Trypanosoma evansi;    pathogenesis;    erythrocyte pathologic changes;    dog;    horse;   

DOI  :  10.1590/S0103-84781995000200010

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

Trypanosoma evansi caused severe anemia in horses and pronounced leukopenia in dogs, both naturally infected. The horses presented microcytic normochromic anemia and the dogs showed microcytic hypochromic anemia. The clinical signs observed were fever, anemia, edema of the legs and lower parts, weakness and inappetence. Light microscopic studies demonstrated that Trypanosoma evansi produced several alterations in erythrocytes of dogs and horses. These pathologic changes included vacuolation, acanthocytes, dacrocytes, codocytes, microspherocytes and bizarre shapes. Mature erythrocyte were observed adhered to trypanosomes. Erythrophagocytosis was also demonstred.

【 授权许可】

CC BY-NC