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Pigmentation01:19

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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
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Postmortem Tanning: An Unusual Postmortem Event.

Brailyn Weber1, Susan Roe, Mary Ann Sens

  • 1From the UND School of Medicine and Health Sciences, Department of Pathology, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND.

The American Journal of Forensic Medicine and Pathology
|May 17, 2023
PubMed
Summary
This summary is machine-generated.

This study identifies a new postmortem change called postmortem tanning, characterized by distinct dark lines caused by prolonged sun exposure. This finding is crucial for analyzing postmortem scenes and understanding environmental influences on decomposition.

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Area of Science:

  • Forensic Pathology
  • Postmortem Changes
  • Environmental Forensics

Background:

  • Postmortem changes are influenced by environmental factors.
  • Unusual postmortem alterations can provide valuable scene analysis information.

Purpose of the Study:

  • To describe and define a novel postmortem phenomenon: postmortem tanning.
  • To highlight the importance of recognizing postmortem tanning in forensic investigations.

Main Methods:

  • Case study analysis of three individuals exhibiting unusual skin changes.
  • Observation of distinct tanning lines formed by differential sun exposure.
  • Comparison with existing literature on postmortem skin alterations.

Main Results:

  • Identified well-delineated, dark tanning lines in areas shielded from sunlight.
  • Observed this phenomenon in both frozen and non-frozen remains.
  • Distinguished postmortem tanning from mummification and bog body transformations.

Conclusions:

  • Postmortem tanning is a distinct phenomenon resulting from prolonged sun exposure.
  • Recognition of postmortem tanning aids in postmortem scene analysis.
  • Understanding the mechanisms of postmortem tanning is vital for forensic interpretation.