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Innovative methods of airport biological control
Bulíček, Pavel ; Motyková, Veronika (referee) ; Kujal, Tomáš (advisor)
The main content of this master’s thesis is identification of biological threats and analysis of present means of aerodrome biological control, description of their effectiveness and possibilities of usage. Furthermore the way of bird strikes recordkeeping and innovative means, devices and procedures of aerodrome biological control considering the required safety level are mentioned.
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Genetic Aspects of Sporadic Ovarian Cancer
Jančárková, Natalia ; Freitag, Pavel (advisor) ; Rokyta, Richard (referee) ; Kohoutová, Milada (referee)
58 9. SUMMARY Molecular biological parameters, including genetic alterations, present new and perspective direction in diagnostics, prediction of prognosis, monitoring and possible therapeutic approaches in oncological disease. The results presented have to do with the project, which is concentrated upon chromosomal rearrangements in ovarian and cervical cancer and their correlations with available parameters of both molecular biological and clinical characteristics. Sixty patients with ovarian cancer and twenty patients manifesting cervical cancer were included into the study. The histological type and grade, MIB-1 and p53 (using immunohistochemical method) were estimated by histopathologist. Both conventional karyotyping and molecular-cytogenetic methods (fluorescent in situ hybridization and comparative genomic hybridization) were applied to reveal chromosomal aberrations. The results were subjected to statistical evaluation, using analysis of variances and χ2 test. There were correlated parameters of quantitative and qualitative character - age, stage, histological type, grade, CA 125 before and after treatment, MIB-1, p53, surgical residuum, lymphadenectomy, response rate, chromosomal rearrangements. Analyses accomplished in ovarian cancer group revealed typical amplifications on chromosomes 1q, 3q and...
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The study of photodynamic phenomenon on melanom cell lines
KOLÁČKOVÁ, Zdeňka
Photodynamic therapy (PDT) is a medical method combining the use of photodynamic active substance and light in presence of oxygen. It extends the treatment possibilities of tumor and non-tumor disorders. It complements surgical treatment, radiotherapy, chemotherapy and immunotherapy. An increased accumulation of photosensitive substance in pathological focus is the base of PDT. Subsequent irradiation by light of suitable wavelenght evokes photodynamic reactions leading to formation of reactive oxygen species and to biological answer leading to tumor cells damage. The final effect depends on sensitizer type, its concentration in target tissue and on used source of radiation. Aim of the thesis is to prove photodynamic properties of newly developed photodynamic active substance phtalocyanin CIAIPcS2 and possibilities of its usage to induce photodynamic phenomenon in melanom cells. Owing to absorption of light in sensitizer the formation of excited states happens, and then the excited form of sensitizer reacts directly with substrate. During this reaction free radicals of substrate form or transfer of energy from sentitizer to oxygen and formation of highly reactive singlet oxygen happen. Free radicals, especially radicals of lipid components of cell membranes, are the major cause of tumor destruction. Fruitfulness of PDT depends not only on type of sensitizer and level of oxygen in tumor cell but also on used light source. Luminiscence diodes (LEDs) were used as the source of light. Formation of ROS after PDT was detected with the help of fluorescent molecular probe CM-H2DCFDA on spectrofluorimeter Synergy HT and on fluorescent microscope Olympus IX 81 with image analysis. According to our results the production of ROS depends on concentration of sensitizer CIAIPcS2 and the radiation dose. We proved that the sensitizer CIAIPcS2 is suitable photodynamic active substance and evokes photodynamic phenomenon in tumor cells.
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Optoelectronic sensor of polarization state of transmitted light
Bajgar, Aleš ; Rampl, Ivan (referee) ; Tománek, Pavel (advisor)
The living body tissues consist of cells which dimensions are bigger than a wavelength of visible light. Therefore a Mie scattering of transmitted light occurs and different polarization states arise. The changes of polarization state due to the multiple scattering of light in the biological cellular tissues allow measure the aging of biological tissue. The transmitted polarized laser light exhibits multiple scattering on the thin slice of sample.
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