Home|Journals|Articles by Year

Directory for Medical Articles
 

Open Access

Original Research

RMJ. 2014; 39(1): 72-77


Expression of S100A6 in the differentiation of keratinocytic tumours of skin

Muhammad Usman Shams, Abdul Hannan Nagi, Ehsan Ullah.

Abstract
Background: Keratinocytic tumors are commonest skin tumours. S100A6 is useful in differentiation of BCC, SCC and other adnexal tumours. We studied expression of S100A6 and its pattern to see its role in differentiation of various keratinocytic tumours.
Methods: Immunohistochemistry was performed using streptavidin-biotin peroxidase technique with the polyclonal antibody for S100A6. The expression was based on percentage of tumour cells showing cytoplasmic positivity and the cytoplasmic staining intensity. Only cytoplasmic expression was considered as positive.
Results: All the types of keratinocytic tumours showed positivity for S100A6 except BCCs. Among SCCs, higher expression of S100A6 was seen in well-differentiated SCCs as compared to poorly-differentiated ones. Only basosquamous BCCs i.e. BCCs with focal areas of squamous differentiation showed S100A6 positivity. In benign keratinocytic lesions including acanthomas and verrucas, mature squamous cells were found positive with no significant difference in pattern of staining. The precancerous lesion i.e. actinic keratosis and Bowen’s disease showed non-specific S100A6 staining.
Conclusions: S100A6 is consistently expressed in mature squamoid cells of keratinocytic tumours with a sensitivity of 98%, if we exclude BCCs.

Key words: S100A6, Squamous cell carcinoma, basal cell carcinoma, acanthoma, actinic keratosis, Bowen’s disease, verruca






Similar Articles

Full-text options


Latest Statistics about COVID-19
• pubstat.org


Add your Article(s) to Indexes
• citeindex.org






Journal Finder
Covid-19 Trends and Statistics
CiteIndex.org
CancerLine
FoodsLine
PhytoMedline
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.