The ultrastructure of corified skin

Area of Science:

• Forensic pathology
• Dermatology
• Histology

Background:

• Postmortem changes in human skin are complex.
• Corification is a poorly understood postmortem transformation.
• Understanding these changes is crucial for forensic analysis.

Purpose of the Study:

• To investigate the ultrastructural changes in human skin during corification.
• To compare the preservation of epidermal and dermal components.
• To identify potential explanations for observed phenomena.

Main Methods:

• Examination of human skin samples from 6- and 12-month-old corpses.
• Utilized electron microscopy for ultrastructural analysis.
• Comparative analysis of epidermal and dermal tissue preservation.

Main Results:

• The epidermis exhibited exceptional ultrastructural preservation, similar to fresh tissue.
• The dermis showed significant degradation, including altered collagen fibrils and ground substance precipitates.
• No clear cause for this differential preservation was identified.

Conclusions:

• Corification results in remarkable preservation of the epidermis but degradation of the dermis.
• The underlying mechanisms for this selective preservation remain unknown.
• Further research is needed to elucidate the process of corification.