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Studies on DNA damage: Discordant responses of rate of DNA disentanglement (viscosimetrically evaluated) and alkaline elution rate, obtained for several compounds

Possible explanations of the discrepancies

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Abstract

Alkaline elution is a well-known method for detecting DNA damage. Recently we have developed a viscosimetric method that is even more sensitive than alkaline elution. Here we report that the two methods, although apparently both revealing alkaline DNA fragmentation, can give dramatically different results for a significant series of compounds. We suspect that alkaline elution might reveal not only DNA fragmentation but also the extent of disentanglement of chromatin structure, whereas this DNA disentanglement rate, when evaluated viscosimetrically, is more strictly correlated with the initiation of DNA unwinding.

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Authors and Affiliations

  1. Department of Oncology, University of Genoa, Genoa, Italia

    S. Parodi & L. Santi

  2. Instituto Nazionale per la Ricerca sul Cancro Istituto Scientifico per lo Studio e la Cura dei Tumori, Viale Benedetto XV, 10-16132, Genoa, Italia

    C. Balbi, M. L. Abelmoschi, M. Pala & P. Russo

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  1. S. Parodi
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  2. C. Balbi
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  3. M. L. Abelmoschi
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  4. M. Pala
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  5. P. Russo
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  6. L. Santi
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Parodi, S., Balbi, C., Abelmoschi, M.L. et al. Studies on DNA damage: Discordant responses of rate of DNA disentanglement (viscosimetrically evaluated) and alkaline elution rate, obtained for several compounds. Cell Biophysics 5, 285–300 (1983). https://doi.org/10.1007/BF02788627

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  • DOI: https://doi.org/10.1007/BF02788627

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