Jul 25, 2006

Do nanoparticles present ecotoxicological risks for the health of the aquatic environment?

Environment International
M N Moore

Abstract

Nanotechnology is a major innovative scientific and economic growth area, which may present a variety of hazards for environmental and human health. The surface properties and very small size of nanoparticles and nanotubes provide surfaces that may bind and transport toxic chemical pollutants, as well as possibly being toxic in their own right by generating reactive radicals. There is a wealth of evidence for the harmful effects of nanoscale combustion-derived particulates (ultrafines), which when inhaled can cause a number of pulmonary pathologies in mammals and humans. However, release of manufactured nanoparticles into the aquatic environment is largely an unknown. This review addresses the possible hazards associated with nanomaterials and harmful effects that may result from exposure of aquatic animals to nanoparticles. Possible nanoparticle association with naturally occurring colloids and particles is considered together with how this could affect their bioavailability and uptake into cells and organisms. Uptake by endocytotic routes are identified as probable major mechanisms of entry into cells; potentially leading to various types of toxic cell injury. The higher level consequences for damage to animal health, ecologi...Continue Reading

Mentioned in this Paper

Biochemical Pathway
Immune System
Endocytosis
Cell Injury
Lung
Hepatopancreas
Organic Chemicals
Polycyclic Hydrocarbons, Aromatic
Toxicity Tests
Protoplasm

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