TY - JOUR ID - 12286 TI - Protective effects of phenolic acids on mercury-induced DNA damage in precision-cut kidney slices JO - Iranian Journal of Basic Medical Sciences JA - IJBMS LA - en SN - 2008-3866 AU - Carranza-Torres, Irma Edith AU - Viveros-Valdez, Ezequiel AU - Guzmán-Delgado, Nancy Elena AU - García-Davis, Sara AU - Morán-Martínez, Javier AU - Betancourt-Martínez, Nadia Denys AU - Balderas-Rentería, Isaías AU - Carranza-Rosales, Pilar AD - Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México AD - Departamento de Química Analítica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México AD - División de Investigación, Unidad Médica de Alta Especialidad # 34, Instituto Mexicano del Seguro Social, Monterrey, NL. México. AD - Laboratorio de Ingeniería Genética y Genómica, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México AD - Departamento de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL. México Y1 - 2019 PY - 2019 VL - 22 IS - 4 SP - 367 EP - 375 KW - Comet assay KW - Genotoxicity KW - Mercuric chloride KW - Phenolic compounds KW - Precision-cut tissue slices DO - 10.22038/ijbms.2019.30056.7242 N2 - Objective(s): Precision-cut tissue slices are considered an organotypic 3D model widely used in biomedical research. The comet assay is an important screening test for early genotoxicity risk assessment that is mainly applied on in vitro models.  The aim of the present study was to provide a 3D organ system for determination of genotoxicity using a modified method of the comet assay since the stromal components from the original tissue make this technique complicated.Materials and Methods: A modified comet assay technique was validated using precision-cut hamster kidney slices to analyze the antigenotoxic effect of the phenolic compounds caffeic acid, chlorogenic acid, and rosmarinic acid in tissue slices incubated with 15 µM HgCl2. Cytotoxicity of the phenolic compounds was studied in Vero cells, and by morphologic analysis in tissue slices co-incubated with HgCl2 and phenolic compounds. Results: A modification of the comet assay allows obtaining better and clear comet profiles for analysis. Non-cytotoxic concentrations of phenolic acids protected kidney tissue slices against mercury-induced DNA damage, and at the same time, were not nephrotoxic. The highest protection was provided by 3 µg/ml caffeic acid, although 6 µg/ml rosmarinic and 9 µg/ml chlorogenic acids also exhibited protective effects.Conclusion: This is the first time that a modification of the comet assay technique is reported as a tool to visualize the comets from kidney tissue slices in a clear and simple way. The phenolic compounds tested in this study provided protection against mercury-induced genotoxic damage in precision-cut kidney slices. UR - https://ijbms.mums.ac.ir/article_12286.html L1 - https://ijbms.mums.ac.ir/article_12286_066f9b850872a49301aff5c9db65dd78.pdf ER -