Immunohistochemical expression of leptin in non melanoma skin cancer
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Type
Article
Publisher
Journal of Clinical and Diagnostic Research
Series Info
Journal of Clinical and Diagnostic Research
10
10
Scientific Journal Rankings
Abstract
Introduction: Obesity in adults is associated with numerous health disorders including some forms of cancer. Various epidemiological studies have found a link between excess adiposity and malignant melanoma; however, the association with non melanoma skin cancer is questionable. Leptin is a hormone produced mainly by the adipose tissue and its serum level may reflect body mass index. Leptin is reported to promote proliferation and angiogenesis and deregulate apoptosis, therefore facilitates the process of carcinogenesis. Aim: The current study tried to assess leptin localization and expression in non melanoma skin cancer to verify its possible role in pathogenesis of this cancer. Materials and Methods: This study was carried out on 13 Basal Cell Carcinoma (BCC) cases and 14 Squamous Cell Carcinoma (SCC) cases together with 19 normal skin biopsies as a control group using immunohistochemical method. Results: Leptin was expressed in 52.6% of the normal epidermis with pure cytoplasmic and both cytoplasmic and nuclear staining patterns. All cases of SCC (100%) and two cases of BCC (15.4%) showed leptin expression in tumour cells whereas nuclear expression was in favour of SCC. Stromal expression of leptin was seen in both SCC (57.1%) and BCC (38.5%) without significant differences. Percentage of leptin expression by tumour cells in SCC showed positive linear correlation with tumour size (p=0.02) and microvessel density (p=0.000). Stromal expression of leptin in SCC was associated with large tumour size (p=0.04), advanced stage (p=0.01) and tumours arising in sites other than head and neck (p=0.01). Conclusion: Leptin could have a more important role in pathogenesis of cutaneous SCC rather than BCC that may reflect the trivial role of obesity in induction of BCC. The expression of leptin by tumour and stromal cells of SCC could co-operate in its progression by promoting angiogenesis with subsequently acquiring large tumour size and then advanced stage. � 2016, Journal of Clinical and Diagnostic Research. All rights reserved.
Description
Scopus
MSA Google Scholar
MSA Google Scholar
Keywords
Basal cell carcinoma, Obesity, Squamous cell carcinoma, leptin, adolescent, adult, aged, angiogenesis, Article, basal cell carcinoma, body mass, capillary density, cell proliferation, child, clinical article, clinical assessment, controlled study, disease association, female, human, human tissue, immunohistochemistry, male, melanoma skin cancer, middle aged, obesity, protein expression, skin biopsy, squamous cell carcinoma, tumor volume