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Cobalt and antimony: genotoxicity and carcinogenicity
Marlies De Boeck1, Micheline Kirsch-Volders, Dominique Lison
1Laboratorium voor Cellulaire Genetica, Vrije Universiteit Brussel, Pleinlaan 2, Brussel 1050, Belgium.
Mutation Research
|December 4, 2003
Summary
Cobalt (Co) and antimony (Sb) exhibit genotoxic and carcinogenic properties. Cobalt exposure is linked to lung cancer, while antimony trioxide shows carcinogenicity in animals, necessitating further investigation into mechanisms and human risk.
Area of Science:
- Toxicology
- Environmental Health
- Occupational Medicine
Background:
- Cobalt (Co) and antimony (Sb) are widely used in industrial and therapeutic applications.
- Occupational exposure to these metals can lead to significant adverse health effects.
- Understanding their genotoxicity and carcinogenicity is crucial for risk assessment.
Purpose of the Study:
- To review and summarize existing data on the genotoxicity and carcinogenicity of cobalt and antimony.
- To evaluate the evidence for adverse health effects associated with occupational exposure.
- To identify potential mechanisms of action and areas for future research.
Main Methods:
- Literature review of genotoxicity and carcinogenicity studies on cobalt and antimony.
- Analysis of data from in vitro and in vivo test systems.
- Evaluation of epidemiological data on human exposure and cancer risk.
Main Results:
- Cobalt(II) ions and cobalt metal are genotoxic in vitro and in vivo; cobalt is carcinogenic in rodents.
- Hard metal dust, associated with lung cancer, is genotoxic in vitro and in vivo.
- Antimony compounds show mixed results in genotoxicity tests; Sb2O3 is considered carcinogenic in animals, but human data is confounded by co-exposure.
Conclusions:
- Cobalt and hard metal dust present a genotoxic and carcinogenic risk, warranting re-evaluation by IARC.
- Antimony's genotoxicity and carcinogenicity require further investigation, particularly regarding mechanisms like reactive oxygen species production and DNA repair interference.
- More research is needed to clarify the human carcinogenicity of antimony and elucidate its mechanisms of action.