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Related Experiment Videos

Tooth and bone tissue analysis by element mapping spectrometry.

Y Teraki1, A Uchiumi

  • 1Department of Histology, Nippon Dental University School of Dentistry at Niigata.

Shigaku = Odontology; Journal of Nihon Dental College
|August 1, 1990
PubMed
Summary
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X-ray fluorescence element mapping spectrometry non-destructively analyzed rat tissues. Lead acetate-induced tumors altered lead and arsenic distribution in bone and teeth.

Area of Science:

  • Biomedical Science
  • Toxicology
  • Analytical Chemistry

Background:

  • Elemental distribution in tissues is crucial for understanding toxicological effects.
  • Lead acetate is a known inducer of tumors and has potential toxicological impacts.
  • Non-destructive elemental analysis methods are needed for detailed tissue investigation.

Purpose of the Study:

  • To introduce a novel X-ray fluorescence element mapping spectrometry system.
  • To analyze the distribution of elements (Ca, Fe, As, Zn, Sr) in tooth and bone tissues of rats with lead acetate-induced tumors.
  • To investigate the impact of lead acetate-induced tumors on elemental distribution, particularly lead and arsenic.

Main Methods:

  • Development and application of a novel X-ray fluorescence element mapping spectrometry system.

Related Experiment Videos

  • Elemental analysis of tooth and bone tissues (maxillary incisive bone, femur) in rats.
  • Comparison of elemental distribution in control rats versus rats with lead acetate-induced tumors at 42 weeks post-injection.

    • Main Results:

    • The developed X-ray fluorescence element mapping spectrometry system provided overhead elemental distribution data without tissue destruction.
    • Lead was detected in the maxillary incisive bone and femur of tumor-bearing rats.
    • Arsenic, present in the femur of control rats, was replaced by lead in tumor-bearing rats.

    Conclusions:

    • The study successfully demonstrated the utility of X-ray fluorescence element mapping spectrometry for non-destructive elemental analysis in biological tissues.
    • Lead acetate-induced tumors significantly alter lead and arsenic distribution in rat bone and tooth tissues.
    • The observed replacement of arsenic by lead suggests potential interactions and chelating activities relevant to lead toxicology.