Evaluation of oxidative DNA damage in pigeon erythrocytes using DNA breakage detection-fluorescence in situ
E I Cortés-Gutiérrez1, J A García-Salas1, M I Dávila-Rodríguez2
1Faculty of Biological Sciences, Laboratory of Ornithology, Universidad Autonoma de Nuevo Leon, Monterrey, México.
Abstract:
DNA breakage detection-fluorescence in situ hybridization (DBD-FISH) enables detection and quantification of DNA breakage in the entire genome or within specific DNA sequences in single cells. We used this method to visualize and evaluate DNA damage in pigeon erythrocytes that were induced by elevated temperature and hydrogen peroxide. We also examined morphological changes in the cell nuclei. DBD-FISH demonstrated a significant increase of DNA damage in a temperature dependent manner, which resulted in nuclear abnormalities associated with apoptotic cells. These cells gave strong nuclear fluorescent signals that indicated cell death.
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