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- W2032952017 abstract "Background and Objective Periodontal disease is a chronic bacterial infection characterized by connective tissue breakdown and alveolar bone destruction because of inflammatory and immune response caused by periodontopathogens and long‐term release of reactive oxygen species. A high number of reactive oxygen species result in periodontal tissue damage through multiple mechanisms such as lipid peroxidation, protein denaturation and DNA damage. The aim of this study was to evaluate DNA and oxidative damage in subjects with chronic or aggressive periodontitis and healthy controls. Material and Methods Buccal mucosa cells and whole saliva were collected from 160 subjects, who were divided into three groups: subjects with chronic periodontitis (CP) ( n = 58), subjects with aggressive periodontitis (AgP) ( n = 42) and a control group ( n = 60). DNA damage was determined by counting micronuclei ( MN ) and nuclear abnormalities ( NA s) in exfoliated cells, including binucleated cells, cells with nuclear buds and karyolitic, karyorrhectic, condensed chromatin and pyknotic cells. The degree of oxidative stress was determined by quantifying 8‐hydroxy‐2′‐deoxyguanosine (8‐ OH dG) in whole saliva. Results Subjects with CP or AgP presented significantly more ( p < 0.05) MN and NA s and higher levels of 8‐ OH dG ( p < 0.05) compared with the control group. Conclusion Our results indicate that subjects with periodontitis ( CP or AgP) exhibited an increase in the frequency of MN , NA s and 8‐ OH dG, which is directly related to DNA damage. In addition, a positive correlation exists between oxidative stress produced by periodontitis disease and MN ." @default.
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- W2032952017 date "2014-03-25" @default.
- W2032952017 modified "2023-10-10" @default.
- W2032952017 title "Increased micronuclei and nuclear abnormalities in buccal mucosa and oxidative damage in saliva from patients with chronic and aggressive periodontal diseases" @default.
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- W2032952017 doi "https://doi.org/10.1111/jre.12175" @default.
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