5-Nitroindazole derivatives as potential therapeutic alternatives against Acanthamoeba castellanii.

Autor: Martín-Escolano R; Laboratory of Molecular & Evolutionary Parasitology, RAPID group, School of Biosciences, University of Kent, Canterbury, CT27NJ, UK. Electronic address: r.martin-escolano@kent.ac.uk., Pérez-Cordón G; Department of Parasitology, University of Granada, Severo Ochoa s/n, E-18071, Granada, Spain., Arán VJ; Instituto de Química Médica (IQM), Consejo Superior de Investigaciones Científicas (CSIC), Calle Juan de la Cierva 3, 28006 Madrid, Spain., Marín C; Department of Parasitology, University of Granada, Severo Ochoa s/n, E-18071, Granada, Spain., Sánchez-Moreno M; Department of Parasitology, University of Granada, Severo Ochoa s/n, E-18071, Granada, Spain., Rosales MJ; Department of Parasitology, University of Granada, Severo Ochoa s/n, E-18071, Granada, Spain. Electronic address: mjrosale@ugr.es.
Jazyk: angličtina
Zdroj: Acta tropica [Acta Trop] 2022 Aug; Vol. 232, pp. 106538. Date of Electronic Publication: 2022 May 23.
DOI: 10.1016/j.actatropica.2022.106538
Abstrakt: Amoebas of the genus Acanthamoeba are distributed worldwide, including species with a high pathogenic capacity for humans. In a similar way to what occurs with other parasitic protozoa, the available treatments show variable effectiveness in addition to high toxicity, which demands the development of new treatments. Positive results of 5-nitroindazole derivatives against several protozoa parasites suggest that these compounds may be a promising tool for the development of efficient antiparasitic drugs. In the present work we have evaluated the in vitro activity of ten 5-nitroindazole derivatives against Acanthamoeba castellanii trophozoites and cysts. To that end, AlamarBlue Assay Reagent® was used to determine the activity against trophozoites compared to the reference drug chlorhexidine digluconate. Cytotoxicity of the compounds was evaluated using Vero cells. The activity on cysts was evaluated by light microscopy and using a Neubauer chamber to quantifying cysts and presence of trophozoites, as an indication of cyst. Our results showed the effectiveness of the 5-nitroindazole derivatives tested against both trophozoites and cysts of A. castellani highlighting 5-nitroindazole derivative 8 which showed a 80% activity on cysts, which is higher than that of the reference drug. Moreover, 5-nitroindazole derivatives 8, 9 and 10 were more effective on trophozoites than the reference drug showing IC 50 values lower than 5 µM. Taking together these results, these 5-nitroindazole derivatives specially compound 8, might be a promising alternative for the development of more efficient treatments against A. castellani infection.
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
Externí odkaz: