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Severe amoebic placentitis in a horse caused by an Acanthamoeba hatchetti isolate identified using next-generation
Angela P Begg1, Kristen Todhunter1, Shannon L Donahoe2
1Vetnostics, North Ryde, New South Wales, Australia.
Amoebic placentitis caused by Acanthamoeba hatchetti was diagnosed in a mare in Australia. Next-generation sequencing confirmed the etiological agent, aiding in understanding this rare condition.
Area of Science:
- Veterinary Pathology
- Microbiology
- Equine Reproduction
Background:
- Equine placentitis can lead to adverse pregnancy outcomes.
- Amoebic infections are uncommon causes of placentitis in mares.
Observation:
- Postpartum histopathological examination of the placenta revealed amoebic placentitis in a mare from eastern Australia.
- The etiological agent was identified as Acanthamoeba hatchetti.
Findings:
- Histopathology confirmed amoebic placentitis.
- Next-generation sequencing-based diversity profiling identified Acanthamoeba hatchetti as the causative agent.
Implications:
- This case highlights Acanthamoeba hatchetti as a potential cause of equine placentitis.
- Advanced molecular techniques like next-generation sequencing are valuable for diagnosing rare infectious agents in veterinary pathology.
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