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Genotoxicity evaluation in workers occupationally exposed to lead.
Paramjit Grover1, P V Rekhadevi, K Danadevi
1Biology Division, Indian Institute of Chemical Technology, Hyderabad, Andhra Pradesh, India. paramgrover@gmail.com
International Journal of Hygiene and Environmental Health
|February 16, 2010
Summary
Lead exposure significantly increases genotoxicity in industrial workers, evidenced by DNA damage and increased cancer risk. Protective measures are crucial to minimize health hazards associated with lead poisoning.
Area of Science:
- Environmental Health
- Toxicology
- Genetics
Background:
- Lead (Pb) is a prevalent industrial toxin posing significant public health risks.
- Occupational exposure to lead is a major concern in various industries.
- Understanding lead's genotoxic effects is crucial for worker safety.
Purpose of the Study:
- To evaluate the genotoxicity of lead exposure in industrial workers.
- To assess oxidative stress markers associated with lead exposure.
- To correlate lead levels with biological indicators and genotoxic effects.
Main Methods:
- Comet assay, micronucleus (MN) test, and chromosomal aberration (CA) test were employed.
- Blood and urinary lead levels, E-ALAD, and U-ALA were quantified.
- Oxidative stress parameters, including antioxidant enzymes and lipid peroxidation, were analyzed.
Main Results:
- Exposed workers showed significantly higher DNA damage (comet tail length) and MN frequency in buccal cells and lymphocytes.
- Chromosomal aberrations were significantly elevated in lead-exposed workers.
- Lead exposure was linked to reduced antioxidant enzyme levels, increased lipid peroxidation, elevated blood/urine lead, reduced E-ALAD, and increased U-ALA.
Conclusions:
- Lead exposure is strongly associated with genotoxicity and oxidative stress in industrial workers.
- Genotoxic effects predict an increased risk of cancer for exposed individuals.
- Implementing safety and preventive measures is essential to mitigate lead exposure and associated health risks.
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