Produção Nacional
Revisado por pares
Abortion in association with transplacental Theileria equi infection in a mare from the State of Espírito Santo, southeast Brazil: case report
2019; UNIVERSIDADE FEDERAL DE MINAS GERAIS; Volume: 71; Issue: 2 Linguagem: Inglês
10.1590/1678-4162-10696
ISSN1678-4162
AutoresAyisa Rodrigues Oliveira, Guilherme Rafael Gomide Pinheiro, Tayse Domingues de Souza, Mayra Cunha Flecher, Renato L. Santos,
Tópico(s)Viral Infections and Vectors
ResumoABSTRACT Equine piroplasmosis is a tick-borne disease caused by the protozoan parasites Babesia caballi and Theileria equi. We report a case of abortion in association with transplacental Theileria equi infection in a mare from the State of Espírito Santo, southeast Brazil. An apparently healthy mare aborted at the tenth month of gestation. At necropsy, the subcutaneous tissue, skeletal muscles, and visible mucosae of the aborted fetus were pale, and there was moderate hydrothorax and marked splenomegaly. Microscopic findings included splenic lymphoid hyperplasia and nephrosis. Merozoite-infected erythrocytes were found within blood vessels of all organs examined and were most numerous in the brain. DNA extracted from the spleen, liver, kidney, and thymus was used as a template for PCR. Generic primers were employed for the detection of piroplasm 18S ribosomal gene. All samples were positive for piroplasm DNA by PCR. Amplicons were purified and then sequenced. Sequencing analysis of these amplicons revealed 98% identity to T. equi sequences. Based on our findings, we suggest that abortion in this case resulted from transplacental Theileria infection.
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