Normalização das Alterações Clínicas e Hematológicas em Cães com Ehrlichiose Submetidos ao Tratamento com Doxiciclina. 2010. 41p. / Normalization of Clinical and Hematological Alterations in Dogs with Ehrlichiosis Submitted to the Treatment with Doxycycline. 2010. 41p.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

The canine monocytic ehrlichiosis, an infectious disease of worldwide distribution, is caused by the rickettsia Ehrlichia canis, an obligatory intracellular parasite of mononuclear cells and transmitted by the dog tick Rhipicephalus sanguineus. The clinical and hematological abnormalities are varied, depending on the strain of Ehrlichia spp., the immune response of the dog and the concomitant presence of other diseases. Among the various hematological disorders, thrombocytopenia is a common feature. The disease can manifest itself through a variety of clinical veterinarians, particularly those working in endemic areas, should always consider the possibility of infection with Ehrlichia spp., especially in dogs with nonspecific signs of illness. This study aimed to evaluate clinical and hematologic recuperation of dogs naturally infected with Ehrlichia sp. and treated with doxycycline. The trial was performided at the Laboratory of Experimental Chemotherapy from the Department of Animal Parasitology of the Institute of Veterinary of the Universidade Federal Rural do Rio de Janeiro. About the total of 90 Beagles dogs kept in kennels experimental laboratory, twelve were selected, with clinical signs such as fever, anorexia, vomiting, weight loss, pale mucous membranes, hepatomegaly and splenomegaly and the presence of ticks R. sanguineus and find hematologic thrombocytopenia. The laboratory diagnosis was confirmed by direct identification of morulae of Ehrlichia sp. in blood smears stained with Giemsa. After weighing all of 12 dogs, they were individually treated with doxycycline at a dose of 10mg/kg body weight every 12 hours for 21 days, during which assessments were made of clinical and hematologic exams. Some clinical changes were observed during the evaluation period as fever, anorexia, vomiting, diarrhea, pale mucous membranes, splenomegaly and lymphadenopathy presenting these standard parameters the 21 days of treatment. The abnormalities found were thrombocytopenia and normochromic normocitic anemia. In the days +14 and +21, the mean counts of red blood cells and hematocrit value were within normal physiological parameters for the species. There was a statistically significant difference between days -1 and +21 by red blood counts and hematocrit values. At the end of treatment, all animals were normalized to platelet count, statistically significant differences between days -1 and +21. It is concluded that there was clinical-hematological normalization at the end of the treatment period and that it administered at a dose of 10mg/kg over 21 days produced no clinical and hematological reactions. Key words: Antibioticotherapy, Ehrlichia spp., Hematology.

ASSUNTO(S)

antibioticoterapia ehrlichia spp hematologia. medicina veterinaria antibioticotherapy ehrlichia spp. hematology.

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