Serologic evidence of equine granulocytic anaplasmosis in horses from central West Brazil.

The research paper is about the identification of Equine Granulocytic Anaplasmosis (EGA) in horses in central West Brazil, using serological and molecular techniques. The study also investigates the occurrence of this seasonal disease, caused by a type of bacteria, relative to piroplasmosis in horses.

Objective of Research

• The primary goal of the study was to identify horses that have been exposed to a bacterial agent known as A. phagocytophilum. This was done through serological and molecular techniques.
• These techniques are used to detect the presence of specific antibodies in the blood, which indicates that the horse has been exposed to the bacteria. These data helps in understanding the occurrence and prevalence of EGA.

Methods Used

• Microscopic examination of buffy coat smear, Enzyme-linked immunosorbent assay (ELISA), Indirect fluorescent antibody test (IFAT) and Nested Polymerase Chain Reaction (nPCR) were the techniques used.
• These processes were carried out on twenty blood and serum samples, taken from horses from the central West region of Brazil.
• Furthermore, the study also carried out serodiagnosis of Theileria equi (an agent that causes piroplasmosis in horses) by IFA and ELISA, as well as molecular diagnosis by nPCR.

Findings of the Study

• According to the study results, out of the twenty equine samples, thirteen (65%) were positive for A. phagocytophilum by ELISA. Yet, none of these samples were positive when buffy-coat smear examination or nPCR techniques were used.
• The antibodies IgG anti-T. equi were detected in eighteen (90%) horses by IFA and seventeen (85%) horses by ELISA. Moreover, the agent that causes piroplasmosis was detected in nine (45%) horses by using the nPCR technique.

Relevance of the Study

• The research provides significant insights to veterinarians and scientists about the occurrence of EGA and equine piroplasmosis in central West Brazil.
• Understanding the prevalence of these diseases can lead to more effective treatments and preventative measures, resulting in improved equine health in this region.