The wavelength dependence of u.v.-induced pyrimidine dimer formation, cell killing and mutation induction in human diploid skin fibroblasts.

Abstract:

:In this study, we determined the wavelength dependence of u.v.-induced pyrimidine dimer formation, cell killing and mutation induction in human diploid skin fibroblasts. Pyrimidine dimers were quantified using the T4 endonuclease V assay, cell killing was measured as loss of colony forming ability and mutation induction was detected at the HPRT locus. U.v. irradiation was performed with monochromatic light of four different wavelengths (254, 297, 302 and 365 nm) and with polychromatic light of a Philips TL-01 lamp (predominantly 312 nm). The relative wavelength dependence for cell killing and mutation induction did not correlate with that for dimer formation. Toxicity and mutagenicity per equivalent initial dimer load increase with increasing wavelength. The relative wavelength dependence for cell killing and mutation induction is essentially the same, except at 365 nm.

journal_name

Carcinogenesis

journal_title

Carcinogenesis

authors

Enninga IC,Groenendijk RT,Filon AR,van Zeeland AA,Simons JW

doi

10.1093/carcin/7.11.1829

subject

Has Abstract

pub_date

1986-11-01 00:00:00

pages

1829-36

issue

11

eissn

0143-3334

issn

1460-2180

journal_volume

7

pub_type

杂志文章