Recent data from deep uranium mines in Czechoslovakia indicated that in addition to radon daughter products, miners are also exposed to chemical mutagens. Mycotoxins were identified as a possible source of mutagenicity present in the mines. Various methods of biomonitoring were used to examine three groups of miners from different uranium mines. Cytogenetic analysis of peripheral lymphocytes, unscheduled DNA synthesis (UDS) in lymphocytes, and lipid peroxidation (LPO) in both plasma and lymphocytes were studied on 66 exposed miners and 56 controls. Throat swabs were taken from 116 miners and 78 controls. Significantly increased numbers of aberrant cells were found in all groups of miners, as well as decreased UDS values in lymphocytes and increased LPO plasma levels in comparison to controls. Molds were detected in throat swabs from 27% of miners, and 58% of these molds were embryotoxic. Only 5% of the control samples contained molds and none of them was embryotoxic. The following mycotoxins were isolated from miners' throat swab samples: rugulosin, sterigmatocystin, mycophenolic acid, brevianamid A, citreoviridin, citrinin, penicilic acid, and secalonic acid. These data suggest that mycotoxins are a genotoxic factor affecting uranium miners.

Laboratory of Genetic Ecotoxicology Institute of Experimental Medicine Czechoslovak Academy of Sciences Prague

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Biochem Med. 1976 Apr;15(2):212-6 PubMed

Anal Biochem. 1979 Jun;95(2):351-8 PubMed

Mutat Res. 1983 May;120(2-3):181-6 PubMed

Mycopathologia. 1984 Aug 30;87(1-2):43-9 PubMed

Anal Biochem. 1976 May 7;72:248-54 PubMed

Health Phys. 1988 Jan;54(1):27-46 PubMed

Carcinogenesis. 1990 Dec;11(12):2271-4 PubMed

Stain Technol. 1965 Nov;40(6):333-8 PubMed

Neoplasma. 1970;17(5):441-9 PubMed

Mycopathologia. 1984 Dec 30;88(2-3):135-40 PubMed

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Monitoring genotoxic exposure in uranium mines