Abstract
Objectives
Recently published works showed that occupational exposure to antineoplastic drugs (ANPD) is still frequent in hospital settings, despite significant safety policy improvements. The aim of this study was to assess the current level of occupational exposure to ANPD and any potentially associated cytogenetic damages in hospital nurses routinely handling ANPD.
Methods
Occupationally ANPD-exposed (n = 71) and ANPD-unexposed (n = 77; control) nurses were recruited on a voluntary basis from five hospitals in Northern and Central Italy. Evaluation of surface contamination and dermal exposure to ANPD was assessed by determining cyclophosphamide (CP) on selected surfaces (wipes) and on exposed nurses’ clothes (pads). The concentration of unmetabolized CP—as a biomarker of internal dose—was measured in end-shift urine samples. Biomonitoring of genotoxic effects (i.e., biological effect monitoring) was conducted by analyzing micronuclei (MN) and chromosome aberrations (CA) in peripheral blood lymphocytes. Genetic polymorphisms for enzymes involved in metabolic detoxification (i.e., glutathione S-transferases) were analyzed as well.
Results
We observed a significant increase in MN frequency (5.30 ± 2.99 and 3.29 ± 1.97; mean values ± standard deviation; p < 0.0001) in exposed nurses versus controls, as well as in CA detection (3.30 ± 2.05 and 1.84 ± 1.67; p < 0.0001), exposed subjects versus controls. Our results provide evidence that, despite safety controlled conditions, ANPD handling still represents a considerable genotoxic risk for occupationally exposed personnel.
Conclusions
Because both MN and CA have been described as being predictive of group-increased cancer risk, our findings point to a need for improving specific safety procedures in handling and administering ANPD.
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Acknowledgments
The authors wish to thank the nurses for participating in the study as exposed subjects or controls. We are grateful to Prof. Paolo Puccetti, Department of Experimental Medicine, University of Perugia, for reading the manuscript and offering constructive comments. The study was funded by the Italian Ministry of Education, University and Scientific Research (MIUR), Research No. 2005-062547.
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The authors declare that they have no conflict of interest.
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Moretti, M., Grollino, M.G., Pavanello, S. et al. Micronuclei and chromosome aberrations in subjects occupationally exposed to antineoplastic drugs: a multicentric approach. Int Arch Occup Environ Health 88, 683–695 (2015). https://doi.org/10.1007/s00420-014-0993-y
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DOI: https://doi.org/10.1007/s00420-014-0993-y