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Factors influencing susceptibility to metals
1Department of Environmental and Community Medicine, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, USA. gochfeld@eohsi.rutgers.edu
Environmental Health Perspectives
|June 1, 1997
Summary
Human susceptibility to heavy metals is influenced by genetic factors, age, gender, and concurrent exposures. Understanding these factors is crucial for assessing environmental toxicant risks.
Area of Science:
- Environmental Health
- Toxicology
- Human Genetics
Background:
- Limited research exists on factors affecting human susceptibility to heavy metals.
- Genetic factors, age, gender, and co-exposures can modify heavy metal toxicity.
- Mechanisms underlying these modifications are often not well understood.
Purpose of the Study:
- To review factors influencing human susceptibility to heavy metals.
- To highlight the role of genetic, demographic, and environmental factors in heavy metal toxicity.
- To emphasize the need for further research in this understudied area.
Main Methods:
- Literature review of existing studies on heavy metal susceptibility.
- Analysis of factors including genetic predispositions, age, gender, and concurrent exposures.
- Discussion of potential mechanisms of interaction and modification.
Main Results:
- Genetic factors (e.g., glutathione, metallothionein) impact metal distribution and toxicity.
- Age and gender demonstrably influence metal uptake and distribution.
- Co-exposure to divalent cations can alter heavy metal toxicity via competitive interactions.
Conclusions:
- Susceptibility to heavy metals is multifactorial, involving genetic, demographic, and environmental influences.
- Further research is needed to elucidate the mechanisms behind these susceptibility factors.
- Increased use of exposure biomarkers will enhance understanding of heavy metal toxicity distribution.