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Clinico-pathological characteristics of mucin-producing colorectal carcinoma
Sojka, Ladislav ; Levý, Miroslav (advisor) ; Boublíková, Ludmila (referee) ; Klos, Dušan (referee)
Colorectal carcinoma (CRC) is one of the most common malignancies worldwide with persistently high mortality. As a consequence, high demands are placed on research into this disease. The aim of this study was to evaluate the epidemiology of colorectal carcinoma in the Czech Republic in comparison with worldwide data. We focused on the evaluation of the latest findings in screening and diagnosis, investigated prognostic factors, and also focused on the therapeutic options of CRC. Furthermore, mucin-producing carcinomas are described in detail and mucin itself was confirmed as a risk factor for the prognosis of CRC patients. The experimental part of the study focused on gene mucin MUC13 and the MUC13 - miR-4647 axis, which is associated with adverse prognosis in CRC patients. Samples of CRC and samples of adjacent non-malignant mucosa tissue were used. The samples were collected from patients who underwent surgery at the General University Hospital in Prague, at the Thomayer University Hospital in Prague and at the University Hospital in Pilsen (Czech Republic). The collection of samples took place between 2011 and 2015. The total of 187 samples were collected from patients with sporadic colorectal cancer. The subjects of the study all provided information on their lifestyle habits, body mass index...
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Immunoprofiling in patients with HPV-associated and non-associated head and neck squamous cell carcinoma
Lukešová, Eva ; Klozar, Jan (advisor) ; Šlapák, Ivo (referee) ; Laco, Jan (referee)
Head and neck squamous cell carcinomas (HNSCC) remain a significant cause of morbidity worldwide, with approximately 550,000 new cases diagnosed each year. The main etiological factors include smoking and alcohol consumption. The incidence of non-oropharyngeal HNSCC is gradually decreasing while the incidence of squamous cell oropharyngeal carcinoma (OPSCC) is still on the rise. This increasing incidence can be most likely attributed to an increasing prevalence of human papillomavirus (HPV) infection. From the clinical point of view the most significant fact is that patients with HPV positive OPSCC have better prognosis. HNSCC is linked to an alteration in the immune system. Only a limited number of studies have correlated both the immunological parameters and HPV status with patient prognosis. Therefore, we focused on the research of the immunological profile of patients with HNSCC of viral and non-viral etiology. In our study, 110 patients with HNSCC were enrolled. They were divided into HPV-positive and HPV-negative groups based on the expression of HPV 16 E6 mRNA detected in the tumor tissue. Basic lymphocyte subpopulations (CD3+, CD4+ CD25+ Treg, CD4+ CD25+ FoxP3 Treg, CD4+, CD8+, CD19, and CD3- CD16+ CD56+ cells) were determined by flow cytometry in the peripheral blood (PB). We observed...
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Immunoprofiling in patients with HPV-associated and non-associated head and neck squamous cell carcinoma
Lukešová, Eva ; Klozar, Jan (advisor) ; Šlapák, Ivo (referee) ; Laco, Jan (referee)
Head and neck squamous cell carcinomas (HNSCC) remain a significant cause of morbidity worldwide, with approximately 550,000 new cases diagnosed each year. The main etiological factors include smoking and alcohol consumption. The incidence of non-oropharyngeal HNSCC is gradually decreasing while the incidence of squamous cell oropharyngeal carcinoma (OPSCC) is still on the rise. This increasing incidence can be most likely attributed to an increasing prevalence of human papillomavirus (HPV) infection. From the clinical point of view the most significant fact is that patients with HPV positive OPSCC have better prognosis. HNSCC is linked to an alteration in the immune system. Only a limited number of studies have correlated both the immunological parameters and HPV status with patient prognosis. Therefore, we focused on the research of the immunological profile of patients with HNSCC of viral and non-viral etiology. In our study, 110 patients with HNSCC were enrolled. They were divided into HPV-positive and HPV-negative groups based on the expression of HPV 16 E6 mRNA detected in the tumor tissue. Basic lymphocyte subpopulations (CD3+, CD4+ CD25+ Treg, CD4+ CD25+ FoxP3 Treg, CD4+, CD8+, CD19, and CD3- CD16+ CD56+ cells) were determined by flow cytometry in the peripheral blood (PB). We observed...
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