DNA ADDUCTS IN HUMAN AND MOUSE SKIN MAINTAINED IN SHORT-TERM CULTURE AND TREATED WITH PETROL AND DIESEL-ENGINE LUBRICATING OILS

被引:15
|
作者
CARMICHAEL, PL
SHE, MN
PHILLIPS, DH
机构
[1] Haddow Laboratories, Institute of Cancer Research, Sutton, Surrey, Cotswold Road, Belmont
关键词
HUMAN SKIN; MOUSE SKIN; ENGINE LUBRICATING OILS; POLYCYCLIC AROMATIC HYDROCARBONS; DNA ADDUCTS;
D O I
10.1016/0304-3835(91)90162-B
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Human and mouse skin samples maintained in short-term organ culture were treated topically with used engine oils from petrol- and diesel-powered vehicles. Mice were also treated topically in vivo for comparison. DNA was isolated and analysed by P-32-postlabelling and the labeled DNA digests were resolved on polyethyleneimine-cellulose tic sheets. A large number of radioactive adduct spots were observed in DNA from skin treated with the used petrol-engine oil, indicating the formation of adducts by many components of the complex oil mixture. Total adduct levels were similar in mouse skin (both in vivo and in vitro) and in human skin, although qualitative differences in the adduct maps were apparent between the human and mouse skin DNA. Treatment with the used diesel engine oil produced adduct levels no greater than that of control samples in mouse skin (in vivo and in vitro), although significant levels were found in human skin DNA from one donor. The results correlate well with the carcinogenic activity of these oils in experimental animals, helping to substantiate the conclusion that petrol engine oils (but not diesel engine oils) may present a carcinogenic risk to man if appropriate measures to minimise skin contact are not observed.
引用
收藏
页码:229 / 235
页数:7
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