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Association between clinical stage of oral cancer and expression of immunohistochemical markers

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Świątkowski W., Rahnama M., Tomaszewski T., Bigas M., Świątkowska A., Łobacz M., Wallner J.
Polish Journal of Surgery
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2017
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vol. 89(6)
17-22
EN
Aim: The aim of this study is to demonstrate the possible correlation between the expression of examined protein markers - p53, EGFR, PCNA, p44/42 in the mass of the tumor and the clinical stage of disease. Material: 48 patients of the Department and Clinic of Oral and Maxillofacial Surgery, Lublin diagnosed with oral cancer. The control group consisted of 10 patients diagnosed with leukoplakia lesions in the oral cavity. The methods: Immunohistochemical analysis using the detection system DAKO K5007 Cat - Dako REAL ™ Detection System, Peroxidase DAB +, Rabbit / Mouse. Results: Based upon the statistical results, significant correlation between p53 protein and tumor staging; however, a correlation between the level of expression of EGFR, p44/42, PCNA and staging was not likewise revealed. Conclusions: Looking for oral squamous cell carcinoma markers remains an actual issue. Identification of specific markers of oral cancer could be used in screening the population, determining prognosis and response to treatment.
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Spatial visualisation and quantification of expression of cell specific markers - an application for chronic parathyroiditis cases

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Kaczmarek E., Strzelczyk R., Górna A., Majewski P.
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EN
The aim of this work was to develop a simple and fast technique for spatial visualisation of colour cell specific markers in digital microscopy. Colour light microscopy images were transformed into their spatial representation by introducing image brightness as the third dimension. Based on spatial representation, the expression of selected colour specific markers was assessed by their surface, volume, area fraction and colour intensity. This technique was implemented for quantitative analysis of expression of PCNA, Ki67 and bcl-2 in chronic parathyroiditis cases. Comparing to standard, colour sampling techniques, the presented method based on spatial visualisation of the expression of markers in tissue sections, seems an effective and practical application in objective assessment of their distribution in the investigated material.
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