Actividad antimicrobiana y citotóxica de extractos miceliales de hongos de ambientes acuáticos en la Amazonía

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i10.18795

Palabras clave:

Actividad antifúngica; Citotoxicidad; Metabolitos bioactivos.

Resumen

Los hongos son una fuente prolífica de metabolitos biológicamente activos, incluida una amplia gama de fármacos clínicamente importantes. Así, el objetivo de este estudio fue evaluar la actividad antimicrobiana y citotóxica de metabolitos secundários extraídos de micelios fúngicos aislados de muestras de agua en el estado de Amazonas. Se utilizaron extractos miceliales de 12 hongos, extraídos con MeOH/ AcOEt (1:1) según los criterios establecidos por Souza et al. (2004). En la prueba antimicrobiana, los extractos fueron evaluados frente a los patógenos Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Enterococcus feacalis, Candida albicans y C. tropicalis. Para identificar la dosis mínima inhibitoria (MID) se utilizó el método de microdilución. Para realizar el ensayo de citotoxicidad se utilizó la cepa VERO (ATCC® CCL-81TM). Los ensayos se determinaron mediante el método Alamar Blue según Ahmed et al. (1994). Los extractos probados no mostraron actividad antibacteriana. Cinco (41,7%) extractos obtenidos de los hongos Aspergillus - 1283, Chrysoporther - 1169, Diaporther – 1203, Fusarium - 1085 y Trichoderma, mostraron actividad antifúngica contra C. albicans y un extracto (8,3%) del hongo Diaporther - 1203 fue activo contra C. tropicalis. En el ensayo de citotoxicidad, el 58,3% de los extractos evaluados no mostraron ningún efecto tóxico significativo y cinco extractos, Cladosporium - 1135, Chrysoporther - 1169, Cytospora - 1098, Fusarium - 1085 y Talaromyces - 1244, mostraron potencial citotóxico com una viabilidad inferior al 70%. Los resultados obtenidos sugieren que extractos miceliales de hongos aislados de muestras de agua de la región amazónica tienen potencial contra levaduras de interés médico. Solo dos de los extractos activos fueron potencialmente citotóxicos.

Citas

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Publicado

10/08/2021

Cómo citar

OLIVEIRA, M. R. de .; SANTIAGO, S. R. S. da S. .; KATAK, R. de M. .; CAMARGO, M. R. M. .; BASTOS, I. dos S. .; ORLANDI, P. P. .; TADEI, W. P. .; SOUZA, A. D. L. de .; SOUZA, A. Q. L. de . Actividad antimicrobiana y citotóxica de extractos miceliales de hongos de ambientes acuáticos en la Amazonía . Research, Society and Development, [S. l.], v. 10, n. 10, p. e273101018795, 2021. DOI: 10.33448/rsd-v10i10.18795. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/18795. Acesso em: 23 nov. 2024.

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Ciencias Agrarias y Biológicas