Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/4682
Title: Bracken (Pteridium aquilinum)-Induced DNA adducts in mouse tissues are different from the adduct induced by the activated form of the bracken carcinogen ptaquiloside.
Authors: Freitas, Renata Nascimento de
O'Connor, P. J.
Prakash, A. S.
Shahin, M.
Povey, A. C.
Keywords: Bracken fern
Ptaquiloside
Adducts
Postlabelling
Issue Date: 2001
Citation: FREITAS, R. N. de et al. Bracken (Pteridium aquilinum)-Induced DNA adducts in mouse tissues are different from the adduct induced by the activated form of the bracken carcinogen ptaquiloside. Biochemical and Biophysical Research Communications, v. 281, n. 2, p. 589-594, 2001. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0006291X01943888>. Acesso em: 26 jun. 2019.
Abstract: Following treatment with bracken fern (Pteridium aquilinum) extract and bracken spores a number of DNA adducts were detected by 32P-postlabeling. Three of these adducts have been described previously (Povey et al., Br. J. Cancer (1996) 74, 1342–1348) and in this study, using a slightly different protocol, four new adducts, with higher chromatographic mobility, were detected at levels ranging from 50 to 230% of those previously described. When DNA was treated in vitro with activated ptaquiloside (APT) and analysed by butanol extraction or nuclease P1 treatment, only one adduct was detected by 32P-postlabeling. This adduct was not present in the DNA from mice treated with bracken fern or spores, suggesting either that bracken contains genotoxins other than ptaquiloside or that the metabolism of ptaquiloside produces genotoxins not reflected by activated ptaquiloside. However, as the ATP-derived adduct has been detected previously in ileal DNA of bracken-fed calves, species-specific differences in the metabolism of bracken genotoxins may exist, thereby leading to differences in their biological outcomes.
URI: http://www.repositorio.ufop.br/handle/123456789/4682
metadata.dc.identifier.doi: https://doi.org/10.1006/bbrc.2001.4388
ISSN: 0006-291X
metadata.dc.rights.license: O periódico Biochemical and Biophysical Research Communications concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3556580402137.
Appears in Collections:DENCS - Artigos publicados em periódicos

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