Abstract
Immunofluorescence assay was applied for determination of 8-oxoguanine (8-oxoG) in DNA. The 8-oxoG content in liver and lung DNA of 2-and 18-month-old Wistar rats was compared with that of prematurely aging OXYS rats. It was shown that for rats of both strains, 8-oxoG content in lung DNA compared with liver DNA was 1.7–2.0-fold and 1.3–1.7-fold higher for 2-and 18-month-old rats, respectively. However, the degree of oxidative damage in liver DNA of OXYS rats was 2.4-(p < 0.01) and 1.5-fold (p < 0.05) higher for 2-and 18-month-old animals, respectively, than that in liver DNA of Wistar rats. Oxidation of guanine in lung DNA of OXYS rats was 2-(p < 0.01) and 1.7-fold (p < 0.05) higher for 2-and 18-month-old animals, respectively, than that in lung DNA of Wistar rats. The data indicate that elevated DNA oxidative damage in various organs of OXYS rats may be an important factor of accelerated again and progression of age-related diseases—cataract, macular dystrophy, hypertension, osteoporosis, cognitive and behavioral dysfunctions, and also lung and liver pathologies.
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Abbreviations
- Ab:
-
antibodies
- FITC:
-
fluorescein isothiocyanate
- IFA:
-
immunofluorescence assay
- 8-oxoG:
-
8-oxoguanine
- ROS:
-
reactive oxygen species
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Original Russian Text © E. A. Kemeleva, O. I. Sinitsyna, K. A. Conlon, M. Berrios, N. G. Kolosova, D. O. Zharkov, E. A. Vasyunina, G. A. Nevinsky, 2006, published in Biokhimiya, 2006, Vol. 71, No. 6, pp. 760–767.
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Kemeleva, E.A., Sinitsyna, O.I., Conlon, K.A. et al. Oxidation of guanine in liver and lung DNA of prematurely aging OXYS rats. Biochemistry (Moscow) 71, 612–618 (2006). https://doi.org/10.1134/S0006297906060046
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DOI: https://doi.org/10.1134/S0006297906060046