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Maspin Expression in Epithelial Skin Tumours: an Immunohistochemical Study

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Date 2011 Oct 7
PMID 21976902
Citations 4
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Abstract

Background: Maspin is a member of the serpin family of protease inhibitors and is thought to inhibit carcinoma invasion, metastasis, angiogenesis and induce apoptosis.

Aim: The aim of this work is to investigate maspin expression in cutaneous basal and squamous cell carcinomas by means of immunohistochemistry.

Materials And Methods: This study was carried out on 43 patients, 25 basal cell carcinoma (BCC) and 18 squamous cell carcinoma (SCC) together with ten apparently healthy volunteers as a control group.

Results: There was a significant difference between the malignant and control groups regarding maspin expression since all control cases showed maspin expression compared to 60.5% (26/43) positivity in malignant cases. Maspin positive expression tended to be of higher percentage in SCC (77.8%) compared to BCC (48%) (P = 0.06) and the strong intensity of maspin was also significantly in favour of SCC compared to BCC (P = 0.02). The staining of both the cytoplasm and nuclei was seen in 27.7% of SCC and 12% of BCC and was significantly in favour of older age group (P = 0.02) and the adenoid variant (P = 0.04) of the latter.

Conclusions: Maspin is associated with terminal squamous differentiation. Nuclear staining of maspin is seen in both BCC and SCC with a suggested tumour suppressor role in BCC.

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