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Comparison of three different sampling methods for canine skin lipids
Mandy Angelbeck-Schulze1, Jessica Stahl, Susanne Brodesser
1Small Animal Clinic, University of Veterinary Medicine Hannover, Foundation, Buenteweg 9, Hanover, Germany.
Veterinary Dermatology
|March 9, 2013
Summary
Comparing canine epidermal lipid sampling methods, scraping and skin scrubbing offer reliable results. Heat-separated epidermis analysis is less suitable for accurate lipid profiling in dogs.
Area of Science:
- Veterinary Dermatology
- Lipidomics
- Canine Skin Physiology
Background:
- Epidermal lipids are crucial in dermatological research, particularly for canine atopic dermatitis.
- Variability in sampling methods complicates the interpretation of canine epidermal lipid studies.
Purpose of the Study:
- To compare three distinct methods for collecting canine epidermal lipids.
- To identify a minimally invasive technique for obtaining epidermal lipid samples from dogs.
Main Methods:
- Postmortem skin samples were collected from five healthy dogs using heat-separated epidermis, scraping, and skin scrubbing.
- Lipid analysis was performed using high-performance thin-layer chromatography and mass spectrometry.
- The study investigated the impact of sampling method, body site, and ceramide standards on lipid profiles.
Main Results:
- Significant differences in lipid fractions (cholesterol sulphate, cholesteryl esters, triglycerides) were observed between body sites.
- Sampling methods showed significant variations across most lipid fractions and ceramide classes, with notable discrepancies between heat-separated epidermis and skin scrub.
- Scraping and skin scrubbing demonstrated high reproducibility, unlike heat-separated epidermis.
Conclusions:
- Scraping and skin scrubbing are effective and comparable methods for canine epidermal lipid sampling.
- Analysis of heat-separated epidermis is not recommended as a primary method due to potential inaccuracies.
