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GC subtyping in dental pulps

A Kido1, Y Kimura, T Nishizono

  • 1Department of Legal Medicine, Yamanashi Medical University, Japan.

Nihon Hoigaku Zasshi = the Japanese Journal of Legal Medicine
|August 1, 1994
PubMed
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Group-specific component (GC) subtypes were identified in dental pulp using non-immobilized isoelectric focusing. This method is reliable for forensic identification, even with aged teeth, aiding medicolegal investigations.

Area of Science:

  • Forensic Odontology
  • Biochemistry
  • Immunology

Background:

  • Group-specific component (GC) is a protein found in various body fluids.
  • Accurate identification of GC subtypes is crucial for forensic science.
  • Dental pulp offers a potential source for genetic material analysis.

Purpose of the Study:

  • To detect and subtype Group-Specific Component (GC) in dental pulp tissues.
  • To evaluate the feasibility of using dental pulp for GC subtyping in forensic contexts.
  • To determine the minimum sample requirement for reliable GC typing.

Main Methods:

  • Non-immobilized isoelectric focusing (IEF) followed by immunoblotting was employed for GC subtyping.
  • Rocket immunoelectrophoresis was used to quantify GC protein levels.

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  • Dental pulp tissues were analyzed, including samples stored for up to 4 weeks.

    • Main Results:

    • GC subtypes were successfully detected in dental pulp tissues.
    • The minimum detectable amount of GC for typing was approximately 0.02 micrograms.
    • GC typing results from dental pulp matched serum phenotypes of the same individuals.
    • The method proved effective for subtyping even in aged dental pulp samples.

    Conclusions:

    • Non-immobilized IEF is a practical and effective method for GC subtyping in dental pulp.
    • This technique has significant utility for medicolegal investigations involving dental evidence.
    • Dental pulp serves as a viable source for GC subtyping, enhancing forensic identification capabilities.