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Iranian Journal of Basic Medical Sciences، جلد ۲۲، شماره ۴، صفحات ۳۶۷-۳۷۵
عنوان فارسی
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عنوان انگلیسی Protective effects of phenolic acids on mercury-induced DNA damage in precision-cut kidney slices
چکیده انگلیسی مقاله 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.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله | Irma Edith Carranza-Torres
Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México|Departamento de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL. México


| Ezequiel Viveros-Valdez
Departamento de Química Analítica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México


| Nancy Elena Guzmán-Delgado
División de Investigación, Unidad Médica de Alta Especialidad # 34, Instituto Mexicano del Seguro Social, Monterrey, NL. México.


| Sara García-Davis
Departamento de Química Analítica, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México


| Javier Morán-Martínez
Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México


| Nadia Denys Betancourt-Martínez
Departamento de Biología Celular y Ultraestructura, Centro de Investigación Biomédica, Facultad de Medicina, Universidad Autónoma de Coahuila. Torreón, Coah. México


| Isaías Balderas-Rentería
Laboratorio de Ingeniería Genética y Genómica, Facultad de Ciencias Químicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, NL. México


| Pilar Carranza-Rosales
Departamento de Biología Celular y Molecular, Centro de Investigación Biomédica del Noreste, Instituto Mexicano del Seguro Social, Monterrey, NL. México
نشانی اینترنتی http://ijbms.mums.ac.ir/article_12286.html
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