Abstract
Structural, and numeric chromosome aberrations (CA), sister-chromatid exchange (SCE), phytohemagglutinin stimulation (LI), proliferative rate index (PRI), and UV light-induced unscheduled DNA-synthesis (UDS) were investigated in peripheral blood lymphocytes (PBL) of 48 historical controls ("Controls"); of 14 hospital controls in Budapest, Hungary ("Budapest controls"); of 9 nurses occupationally exposed to low-dose ethylene-oxide in Budapest ("Budapest exposed"); of 10 hospital controls in Eger, Hungary ("Eger controls"); and of 27 high dose ETO-exposed nurses in Eger ("Eger exposed"), where neoplasias, mainly breast cancers, were observed. ETO concentrations in the ambient air samples varied from 5 to 20 mg/m3 in Budapest; and from 5 to 100 mg/m3 in Eger. Bothe LI and PRI were depressed in Budapest exposed, indicating ETO-induced cytotoxicity and, however, normal in Eger exposed. SCE was slightly elevated in Budapest exposed, but significantly increased in Eger exposed. The yields of cells with high frequency SCE (HFC) were only increased in Eger exposed. The expected low CA frequencies were found in Controls and in Budapest controls. ETO exposures significantly increased the CA frequencies in Budapest and Eger exposed. In Bud...Continue Reading
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