Efficiency comparison of experimental fosfatriclaben with three commercial fasciolicides in experimentally infected shee
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TREATMENT AND PROPHYLAXIS - ORIGINAL PAPER
Efficiency comparison of experimental fosfatriclaben with three commercial fasciolicides in experimentally infected sheep Rosa Arias-García 1 & Yolanda Vera-Montenegro 1 & Miguel Flores-Ramos 1 & Rafael Castillo 2 & Alicia Hernández-Campos 2 & Froylán Ibarra-Velarde 1 Received: 5 December 2019 / Accepted: 5 May 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this work, we compare and evaluate the efficiency of fosfatriclaben with three commercial fasciolicides in experimentally infected sheep. Fosfatriclaben is a novel prodrug derived from triclabendazole; it is highly water-soluble with excellent aqueous stability at pH 7, properties that make it ideal for developing intramuscular pharmaceutical compositions in the form of solutions. In order to compare, 30 mixed breed sheep, previously diagnosed negative to fluke eggs, were infected with 200 metacercariae of Fasciola hepatica, twice. Five groups of six animals/each were formed for treatments. Group 1 (G1) was treated with closantel 5% injectable at 5 mg/kg subcutaneously, G2 with clorsulon at 2 mg/kg subcutaneously, G3 with triclabendazole at 12 mg/kg per os, G4 with fosfatriclaben at 6 mg/kg intramuscularly (dose equivalent to triclabendazole content), and G5 remained as the nontreated control. On day 110, fecal samples were examined to determine the percentage of egg reduction after treatment, and sheep were humanely euthanized. The livers were collected, the flukes were extracted, measured, and counted. Efficiency in egg reduction was of 86.8, 90.5, 98.4, and 97.3% for closantel, clorsulon, triclabendazole, and fosfatriclaben, respectively, and efficiency against flukes was of 96.2, 91.9, 99.4, and 95.7%, respectively. No statistical differences were found between treatments. It is concluded that fosfatriclaben at 6 mg/kg intramuscularly presented a high fasciolicide efficiency, similar to the best commercial fasciolicides, having advantage over its predecessor since it uses half of the dose required by triclabendazole to remove flukes in sheep under study. Keywords Fosfatriclaben . Triclabendazole . Fasciola hepatica . Benzimidazole . Veterinary prodrug
Introduction Fasciolosis is a zoonotic infection due to trematode Fasciola hepatica; it is the most important parasitic liver infection in cattle and sheep. Fasciola hepatica (liver fluke) belongs to the group of food-borne trematodes and has a broad geographical distribution in all continents; it infects a large number of mammals, including humans through the ingestion of plants and vegetables contaminated with the parasite larva (Taylor et al. Section Editor: Ramaswamy Kalyanasundaram * Froylán Ibarra-Velarde [email protected] 1
Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, 04510 Ciudad de México, México
2
Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, 04510 Ciudad de México, México
2015; Ashrafi and Mas-Coma 2014). More
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