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A noninvasive method for quantifying and distinguishing inflammatory skin reactions
V B Morhenn1, E Y Chang, L A Rheins
1California Skin Research Institute, San Diego 92128, USA.
Journal of the American Academy of Dermatology
|October 27, 1999
Summary
This study uses ribonuclease protection assay (RPA) to measure cytokine mRNA in skin samples, successfully distinguishing between irritant and allergic contact dermatitis by analyzing distinct gene profiles.
Area of Science:
- Dermatology
- Molecular Biology
- Immunology
Background:
- Ribonuclease protection assay (RPA) detects small amounts of intact RNA.
- Cytokine networks in skin are crucial for understanding skin reactions.
- Differentiating irritant contact dermatitis from allergic contact dermatitis is clinically important.
Purpose of the Study:
- To differentiate and quantitate irritant and immunologic skin reactions.
- To measure cytokine mRNA levels in skin samples.
- To establish a molecular basis for distinguishing skin reaction types.
Main Methods:
- Human skin samples were obtained using tape stripping to remove superficial layers.
- RNA was extracted from the collected skin samples.
- Ribonuclease protection assay (RPA) was performed for RNA analysis.
Main Results:
- Distinct cytokine mRNA profiles were identified using RPA.
- These profiles effectively discriminated between irritant and immunologic skin reactions.
- Quantitative differences in cytokine gene expression were observed.
Conclusions:
- Multiple cytokine mRNA levels can be defined in skin samples.
- This approach allows for the assessment of cytokine gene profiles.
- The method can quantify the severity of irritant versus allergic skin reactions.