Evidence map›Paper›PMID 39129000›Full record

ArticleParasites & vectors2024

Transient efficacy of buparvaquone against Theileria haneyi in chronically infected horses.

Cynthia K Onzere, Amany Hassan, Kelly Sears, Lowell S Kappmeyer, Nicolas F Villarino, Lindsay M Fry, Reginaldo G Bastos

Abstract read
In one paragraph

Article in Parasites & vectors, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

  1. Pathogens (Basel, Switzerland) · 2026
    Review
  2. Article
  3. First molecular detection ofFrontiers in veterinary science · 2026
    Article
  4. Article
  5. Frontiers in veterinary science · 2025
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Cynthia K OnzereDepartment of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.
Amany HassanDepartment of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.
Kelly SearsCarlson College of Veterinary Medicine, Oregon State University, Corvallis, OR, USA.
Lowell S KappmeyerAnimal Disease Research Unit, USDA-ARS, Pullman, WA, USA.
Nicolas F VillarinoDepartment of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, USA.
Lindsay M FryDepartment of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA.
Reginaldo G BastosDepartment of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA, USA. reginaldo.bastos@usda.gov.

Funding

Agricultural Research Service 2090-32000-044-000-D
6 · The paper itself

Abstract

backgroundTheileria haneyi is one of the three known causative agents of equine piroplasmosis. While imidocarb is generally effective in the clearance of the highly pathogenic Theileria equi, it is ineffective in the treatment of T. haneyi. Moreover, co-infection with T. haneyi has been shown to impede the successful treatment of T. equi. Furthermore, tulathromycin and diclazuril have demonstrated inefficacy in eradicating T. haneyi. The absence of an effective therapeutic agent against this parasite represents a significant obstacle in managing equine piroplasmosis.

methodsTo address this issue, we evaluated the efficacy of buparvaquone in the treatment of T. haneyi in chronically infected horses.

resultsOur findings showed that treatment of horses with the recommended dose of 2.5 mg/kg of buparvaquone led to a rapid abatement of T. haneyi levels, to a level where the parasites were not detectable by nested PCR. Following treatment, the horses remained PCR negative for a minimum of seven weeks until recrudescence occurred. Subsequent re-administration of buparvaquone at an increased dosage of 6 mg/kg upon recrudescence failed to exert a theilericidal effect on T. haneyi. Throughout the treatment regimen, the hematological parameters of the horses and most components of the chemistry panel remained within the normal range, except for blood urea nitrogen levels, which fell below the normal range in certain instances.

conclusionsBPQ at 2.5 mg/kg and 6 mg/kg had a robust theilericidal effect but was ineffective in the clearance of the T. haneyi infection in persistently infected animals.

Indexed as

Antiprotozoal AgentsHorse DiseasesNaphthoquinonesTheileriaTheileriasisAnimalsChronic DiseaseHorsesMaleTreatment OutcomeAntiprotozoal AgentsbuparvaquoneNaphthoquinonesBlood urea nitrogenBuparvaquoneEquine piroplasmosisHematological parametersTheileria haneyi

Identifiers

PMID39129000
PMCPMC11318256

What Socratic holds

Textmetadata
LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.