Molecular detection of Theileria equi in horses from Veracruz, Mexico.

The study focuses on detecting the presence of a tropical parasitic disease called equine piroplasmosis, caused by Babesia and Theileria, in horses from the state of Veracruz, Mexico. The researchers found an 18% prevalence of the disease, with all affected horses infected with Theileria equi.

Introduction

• The research focuses on equine piroplasmosis, a tropical parasitic disease notably affecting horses, and caused by a group of intraerythrocytic parasites from the genera Babesia and Theileria.
• This study is essential as these pathogens lead to significant economic losses by causing abortions, reducing the equines’ activity, and leading to their death.
• Despite their importance, there have been relatively few investigations into the presence and effects of these pathogens in the northern and eastern parts of Mexico.

Study Aim and Method

• The primary aim of the study was to carry out a molecular detection of Babesia and Theileria in equines from Veracruz, Mexico.
• A total of 100 blood samples were collected for tests. The extraction of DNA was accomplished using Chelex-100 resin, while identification was achieved through analysis of a 459bp fragment of the 18S rRNA gene within the pathogens.

Results and Interpretation

• Out of the total samples analysed, 18% tested positive for the presence of Babesia/Theileria. All these samples were specifically linked to the infection with Theileria equi.
• These results suggest that this pathogen is endemic to the Veracruz region of Mexico.
• The research, therefore, marks the first molecular record of the presence of Babesia/Theileria, particularly T. equi in equines from Veracruz, Mexico.

Conclusion

• The research provides significant insights into the prevalence and detection of Babesia/Theileria in horses in Veracruz. It lays the groundwork for future studies into the nature and impact of these pathogens within the region.
• Furthermore, these findings contribute to a broader understanding of the presence of such tropical parasitic diseases in the equine populations of Mexico and urge for the necessary measures to counteract these diseases.