Advancement through epidermis using tape stripping technique and Reflectance Confocal Microscopy

Area of Science:

• Dermatology
• Skin barrier research
• Biophysical techniques

Background:

• Tape stripping is common for skin barrier studies.
• The relationship between tape strip number and epidermal penetration is not well-documented.
• Variability in tape strip counts across studies necessitates standardization.

Purpose of the Study:

• To investigate epidermal advancement using the tape stripping technique.
• To correlate the number of tape strips with the depth of stratum corneum and epidermal removal.
• To provide data for optimizing tape stripping protocols in skin research.

Main Methods:

• Pilot study involving ten healthy volunteers.
• Sequential tape stripping (0, 5, 15, 35 strips) using D-squame devices on the volar forearm.
• Reflectance Confocal Microscopy (RCM) to measure epidermal thickness post-stripping.
• Squame Scan analysis to quantify protein removed.

Main Results:

• Complete stratum corneum removal was achieved with 35 tape strips.
• Predominant epidermal advancement occurred within the first 15 tape strips, removing 25% of epidermal thickness.
• 35 tape strips removed approximately 33% of the total epidermis.
• Protein removal per tape strip decreased with increasing depth.

Conclusions:

• The number of tape strips directly correlates with the depth of epidermal penetration.
• 15 tape strips are sufficient for significant epidermal sampling.
• This research provides crucial data for standardizing tape stripping methods for enhanced skin barrier understanding.