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Formation of Covalent DNA Adducts by Enzymatically Activated Carcinogens and Drugs In Vitro and Their Determination by 32P-postlabeling
Published on: March 20, 2018
Malignancies due to occupational exposure to benzene
American Journal of Industrial Medicine
|January 1, 1985
Summary
Benzene exposure significantly increases leukemia risk, as shown by higher incidence in Istanbul shoeworkers and a decrease after benzene phase-out. This study confirms benzene
Area of Science:
- Occupational Health
- Toxicology
- Hematology
Background:
- Benzene is a known industrial solvent with suspected carcinogenic properties.
- Previous studies have suggested a link between benzene exposure and hematological malignancies.
Purpose of the Study:
- To investigate the leukemogenic effect of benzene in humans.
- To explore the association between chronic benzene exposure and other malignancies.
Main Methods:
- Epidemiological study comparing leukemia incidence in benzene-exposed shoeworkers versus the general population.
- Analysis of leukemia types and incidence following benzene phase-out.
- Case studies of pancytopenic patients with benzene exposure.
- Investigation of other malignancies (lymphoma, myeloma, lung cancer) in benzene-exposed individuals.
Main Results:
- Significantly higher leukemia incidence (13.6/100,000) in Istanbul shoeworkers exposed to benzene.
- Leukemia cases decreased post-benzene phase-out, with no new reports in 3 years.
- Acute leukemia (96.1%) and preleukemia were more prevalent in benzene-exposed groups compared to non-exposed groups (46%).
- Observed leukemia cases in a tire cord plant with high benzene concentration (110 ppm).
- Studied benzene exposure in 12 malignant lymphoma, 4 multiple myeloma, and 6 lung cancer cases.
Conclusions:
- Benzene exposure is definitively linked to an increased risk of leukemia in humans.
- Benzene's role in the etiology of other malignancies warrants further investigation.
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