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Cadmium as an environmental hazard.

C G Elinder1

  • 1Department of Renal Medicine, Huddinge Hospital, Sweden.

IARC Scientific Publications
|January 1, 1992
PubMed
Summary

Human activities contaminate environments with cadmium, leading to kidney damage. Surprisingly high cadmium levels in Antarctic penguins suggest natural accumulation, highlighting gaps in our understanding of this element

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Area of Science:

  • Environmental Science
  • Toxicology
  • Ecology

Background:

  • Cadmium is a naturally occurring element, but human activities have led to widespread environmental contamination.
  • Human exposure to cadmium can cause severe kidney damage, kidney failure, and skeletal diseases.

Purpose of the Study:

  • To investigate cadmium accumulation in animal organs, particularly in environmentally exposed populations and wildlife.
  • To understand the natural occurrence and distribution of cadmium in ecosystems.

Main Methods:

  • Review of existing data on cadmium concentrations in animal tissues (livers, kidneys) from various species.
  • Histopathological examination of kidneys from affected animals.
  • Analysis of cadmium levels in penguins from Antarctica.

Main Results:

  • Cadmium accumulates in the livers and kidneys of mammals and birds.
  • Horses with long lifespans show very high cadmium concentrations (up to 200 mg/kg) in renal cortex.
  • Environmentally exposed horses and sea birds exhibit kidney damage indicative of chronic interstitial nephritis.
  • Penguins in Antarctica have remarkably high kidney cadmium concentrations (5-160 mg/kg).

Conclusions:

  • Cadmium contamination is a significant environmental and health concern due to human activities.
  • High cadmium levels in Antarctic animals are likely natural, not anthropogenic.
  • Further research is needed to understand the natural biogeochemical cycling of cadmium.

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