Abstract:
OBJECTIVES:To examine Hedgehog signaling in cutaneous fibrosing disorders for which effective approved therapies are lacking, expand our knowledge of pathophysiology, and explore the rationale for targeted inhibition. METHODS:Stain intensity and percentage of cells staining for Sonic hedgehog (Shh), Indian hedgehog (Ihh), Patched (Ptch), glycogen synthase kinase 3 β (GSK3-β), β-catenin, and Snail were evaluated in human skin biopsy specimens of keloid, hypertrophic scar (Hscar), scleroderma, nephrogenic systemic fibrosis (NSF), scar, and normal skin using a tissue microarray. RESULTS:Ihh, but not Shh, was detected in a significantly larger proportion of cells for all case types. Ptch, GSK3-β, and β-catenin showed a gradient of expression: highest in NSF and keloid; moderate in normal skin, scar, and Hscar; and lowest in scleroderma. Snail expression was binary: low in normal skin but high in all fibrosing conditions studied. CONCLUSIONS:Differential overexpression of Hedgehog and Snail in cutaneous fibrosing disorders demonstrates a role for targeted inhibition. Ptch, GSK3-β, and β-catenin can help differentiate scleroderma from NSF in histologically subtle cases. Differences in expression between keloid and hypertrophic scar support the concept that they are pathophysiologically distinct disorders. Our findings implicate Snail as a target for the prevention of fibrogenesis or fibrosis progression and may offer a means to assess response to therapy.
journal_name
Am J Clin Patholjournal_title
American journal of clinical pathologyauthors
Goyal A,Linskey KR,Kay J,Duncan LM,Nazarian RMdoi
10.1093/ajcp/aqw192subject
Has Abstractpub_date
2016-12-01 00:00:00pages
709-717issue
6eissn
0002-9173issn
1943-7722pii
aqw192journal_volume
146pub_type
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更新日期:1987-03-01 00:00:00
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更新日期:2007-11-01 00:00:00
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