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Flores-Ramos M, Leyva-Gómez G, Rojas-Campos T, Cruz-Mendoza I, Hernández-Campos A, Vera-Montenegro Y, Castillo R, Velázquez-Martínez I, Padierna-Mota C, Arias-García R, Ibarra-Velarde F. Fosfatriclaben, a prodrug of triclabendazole: Preparation, stability, and fasciolicidal activity of three new intramuscular formulations. Vet Parasitol 2024; 327:110113. [PMID: 38232512 DOI: 10.1016/j.vetpar.2024.110113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/06/2024] [Accepted: 01/09/2024] [Indexed: 01/19/2024]
Abstract
In this study, we present the preparation, stability, and in vivo fasciolicidal activity of three new intramuscular formulations in sheep of a prodrug based on triclabendazole, named fosfatriclaben. The new formulations were ready-to-use aqueous solutions with volumes recommended for intramuscular administration in sheep. The use of poloxamers (P-407 and P-188) and polysorbates (PS-20 and PS-80) in the new formulations improved the aqueous solubility of fosfatriclaben by 8-fold at pH 7.4. High-performance liquid chromatography with UV detection was used to evaluate the stability of fosfatriclaben in the three formulations. High recovery (> 90%) of fosfatriclaben was found for all formulations after exposure at 57 ± 2 °C for 50 h. The three intramuscular formulations showed high fasciolicidal activity at a dose of 6 mg/kg, which was equivalent to the triclabendazole content. The fasciolicidal activity of fosfatriclaben was similar to commercial oral (Fasimec®) and intramuscular (Endovet®) triclabendazole formulations at a dose of 12 mg/kg. In the in vivo experiments, all formulations administered intramuscularly reduced egg excretion by 100%, and formulations F1, F2, and F3 presented fasciolicidal activities of 100%, 100%, and 99.6%, respectively.
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Affiliation(s)
- Miguel Flores-Ramos
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico; Escuela Nacional de Estudios Superiores, Unidad Mérida, Universidad Nacional Autónoma de México, Carretera Mérida-Tetiz, Km 4, Ucú, Yucatán 97357, Mexico
| | - Gerardo Leyva-Gómez
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Tania Rojas-Campos
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico; Área Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de Hidalgo, 43600 Tulancingo, Hidalgo, Mexico
| | - Irene Cruz-Mendoza
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Alicia Hernández-Campos
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Yolanda Vera-Montenegro
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Rafael Castillo
- Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Israel Velázquez-Martínez
- Laboratorios de Especialidades Inmunológicas S.A. de C.V., Av. Gran Canal S/N Locales 3 y 4, Ampliación Casas Alemán, Alcaldía Gustavo A. Madero, CDMX 07580, Mexico
| | - Cecilia Padierna-Mota
- Laboratorios de Especialidades Inmunológicas S.A. de C.V., Av. Gran Canal S/N Locales 3 y 4, Ampliación Casas Alemán, Alcaldía Gustavo A. Madero, CDMX 07580, Mexico
| | - Rosa Arias-García
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico
| | - Froylán Ibarra-Velarde
- Facultad de Medicina Veterinaria y Zootecnia, Departamento de Parasitología, Universidad Nacional Autónoma de México, CDMX 04510, Mexico.
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