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Heavy metals and living systems: An overview
Reena Singh1, Neetu Gautam, Anurag Mishra
1Department of Pharmacognosy, Babu Banarasi Das National Institute of Technology and Management, Lucknow, Uttar Pradesh, India.
Indian Journal of Pharmacology
|June 30, 2011
Summary
Human activities disrupt natural heavy metal cycles, leading to plant accumulation. This impacts plant pharmacology and poses health risks due to toxic metal exposure, with unknown long-term biotechnological effects.
Area of Science:
- Environmental Science
- Biochemistry
- Pharmacology
Background:
- Heavy metals are naturally occurring elements, but human activities have disturbed their cycles.
- Altered geochemical and biochemical balances lead to heavy metal accumulation in plants.
- Plants accumulate metals in secondary metabolites, influencing pharmacological properties.
Purpose of the Study:
- To explore the implications of heavy metal accumulation in plants.
- To understand the link between plant metal uptake and pharmacological activity.
- To highlight the biotechnological potential and unknown long-term effects of plant metal accumulation.
Main Methods:
- Review of geochemical and biochemical processes related to heavy metals.
- Analysis of plant secondary metabolites and their interaction with accumulated metals.
- Assessment of human health risks associated with prolonged exposure to specific heavy metals.
Main Results:
- Human activities significantly alter natural heavy metal distribution and plant uptake.
- Accumulated metals in plant secondary metabolites can confer specific pharmacological activities.
- Prolonged exposure to heavy metals like cadmium, copper, lead, nickel, and zinc has detrimental health effects.
Conclusions:
- Understanding plant metal accumulation is crucial for both pharmacology and environmental health.
- Biotechnological applications of metal-accumulating plants require careful consideration of potential risks.
- Further research is needed to fully comprehend the long-term consequences of plant metal accumulation.
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