Different expression of cyclooxygenase-2 (COX-2) in selected nonmelanocytic human cutaneous lesions

• Published in: Folia histochemica et cytobiologica Vol. 49; no. 3; pp. 381 - 388
• Main Authors: Kuźbicki, Łukasz, Lange, Dariusz, Stanek-Widera, Agata, Chwirot, Barbara W
• Format: Journal Article
• Language: English
• Published: Poland Wydawnictwo Via Medica 01.01.2011
• Subjects: Basal cell carcinoma; Biomarkers - metabolism; Cancer; Carcinoma, Basal Cell - enzymology; Carcinoma, Basal Cell - pathology; Carcinoma, Squamous Cell - enzymology; Carcinoma, Squamous Cell - pathology; Cyclooxygenase 2 - metabolism; Cyclooxygenase-2; Diagnosis, Differential; Fibroma - enzymology; Fibroma - pathology; Humans; Lesions; Malignancy; Skin; Skin - cytology; Skin - enzymology; Skin - pathology; Skin diseases; Skin Diseases - enzymology; Skin Diseases - pathology; Skin lesions; Skin Neoplasms - enzymology; Skin Neoplasms - pathology; Spatial distribution; Squamous cell carcinoma; Staining; Tumors
• ISSN: 0239-8508; 1897-5631
• DOI: 10.5603/FHC.2011.0054

The aim of our study was to elucidate the possible involvement of COX-2 in the development and/or progression of nonmelanocytic skin lesions. To evaluate the usefulness of that enzyme as a potential molecular marker, we examined the intensity and spatial distribution of COX-2 expression in selected types of such tumors using the same immunohistochemical procedure as in our earlier studies of melanocytic cancers. We examined 20 benign epithelial lesions, 11 precancerous lesions, 21 basal cell carcinomas (BCC), 14 squamous cell carcinomas (SCC) and eight fibromas. The levels of COX-2 expression detected in benign lesions and in normal skin were comparable. Elevated expression of this protein may play a role in the development of SCC, as indicated by strong immunostaining both in SCCs and precancerous lesions. Significantly stronger staining in SCCs compared to BCCs may indicate a role of COX-2 in cancer malignancy and serve as an indicator useful for differential diagnostics of the two types of cancer. Strong staining in all skin layers of SCC may help in detecting cancer cells infiltrating surrounding skin layers.