Abstract
Autoimmunity and microbial agents have been suggested as playing a pathogenetic role in psoriasis. Since immune responses to microbial infections are often directed towards heat shock proteins (HSP), we investigated the expression of three HSP families in normal and inflamed human skin. Specimens from ten patients with psoriasis and three patients with positive patch tests for nickel and from five healthy volunteers were analysed by means of immunohistochemistry. The patterns observed were qualitatively similar in these conditions showing only minor quantitative differences. Psoriatic epidermis exhibited the highest level of expression. HSP27, HSP70 and heat shock cognate protein 70 (HSC70) were readily detectable. HSP27 was homogeneously distributed throghout the epidermis, whereas HSP70 was restricted to the basal layer and HSC70 primarily to the suprabasal layers. Other HSPs were detected to a lesser degree and showed a more irregular pattern. Thus, the qualitative expression pattern of HSPs seems to be constant between different skin conditions, but the expression of constitutive and inducible HSP70 depends on the differentiation state of keratinocytes.
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Abbreviations
- BiP :
-
immunoglobulin heavy chain binding protein
- GrP :
-
glucose regulated protein
- HSC70 :
-
heat shock cognate protein 70
- HSP :
-
heat shock protein
- HSP70 :
-
heat shock protein 70
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Boehncke, W.H., Dahlke, A., Zollner, T.M. et al. Differential expression of heat shock protein 70 (HSP70) and heat shock cognate protein 70 (HSC70) in human epidermis. Arch Dermatol Res 287, 68–71 (1994). https://doi.org/10.1007/BF00370721
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DOI: https://doi.org/10.1007/BF00370721