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Blood groups and enzyme types from human teeth

A K Sharma1, P K Chattopadhyay

  • 1Department of Forensic Science, Punjabi University, Patiala, India.

Journal - Forensic Science Society
|January 1, 1993
PubMed
Summary

Genetic markers in human teeth, including ABO blood groups and various isozymes, were analyzed for stability. ABO blood groups showed the highest stability in teeth stored at room temperature, followed by PGM1 and ADA isozymes.

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Area of Science:

  • Forensic Anthropology
  • Human Genetics
  • Biochemistry

Background:

  • Human identification relies on genetic markers found in biological samples.
  • Teeth are a valuable source of genetic material due to their durability.
  • Understanding the stability of genetic markers in teeth is crucial for forensic applications.

Purpose of the Study:

  • To analyze the presence and stability of ten genetic markers (ABO, PGM1, GLO-I, EsD, EAP, AK, ADA, 6-PGD, G-6-PD, and CA-II) in human teeth.
  • To compare the stability of these markers in different tooth tissues (dentine, pulp, cement).
  • To determine the persistence of genetic markers in teeth stored at room temperature.

Main Methods:

  • Paired human teeth and fresh blood samples were collected.

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  • Genetic markers were analyzed using established typing methods.
  • Stability of markers was assessed in tooth tissues (dentine, pulp, cement) after storage at room temperature.

    • Main Results:

    • ABO blood groups were successfully determined from dentine, pulp, and cement.
    • Isozyme typing was only successful in dental pulp.
    • ABO blood groups demonstrated the highest stability, followed by PGM1 and ADA isozymes.
    • CA-II isozymes exhibited the least stability.

    Conclusions:

    • Human teeth contain multiple genetic markers suitable for forensic analysis.
    • ABO blood groups are the most stable genetic markers in teeth, offering high reliability for identification.
    • The stability of isozymes varies, with CA-II being the least persistent under room temperature storage.