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Účinky vybraných peptidů na jednobuněčnou řasu Chlamydomonas reinhardtii
Avdeeva, Olga
In the presented work, the modified novicidin peptides NVCAA and NVCHH were applied to the unicellular alga Chlamydomonas reinhardtii. The aim of the study was to determine the minimum inhibitory concentrations of the tested peptides on Escherichia coli bacteria with subsequent application on the unicellular algae Chlamydomonas reinhardtii. The assessment of the effect of the tested peptides on the algae was carried out using spectrophotometric analyses: chlorophyll A and chlorophyll B content, total flavonoid content, total antioxidant capacity and using the DPPH ASSAY method. Chlamydomonas reinhardtii molecular changes were determined by monitoring the amount of isolated RNA and the expression of APX1, APX2, CAT1, CAT2 genes using the Real-time PCR method. Statistically processed data showed that the application of NVCAA and NVCHH peptides induced considerable stress in the cilia.
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Monitoring of DWV, BQCV and CBPV viruses in colonies in the Czech Republic
ZAHRADNÍK, Václav
This doplima thesis deals with the determination of the degree of infection by selec-ted diseases among hives in Czech republic. The literature search mentions viral diseases, problems and methods of isolating total RNA from a sample of bees. The methodology is further focused on the isolation of total RNA, amplification of viral RNA in the sample by RT-PCR with specific primers. Evaluation of the results is performed by electrophoresis and subsequent sequencing of the positive sample and sequence comparison in the NCBI database.
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Optimization of miRNA analysis in fine-needle biopsy samples of pancreatic cancer tissue.
Čuperková, Romana ; Benešová, Lucie (advisor) ; Kuthan, Martin (referee)
Pancreatic cancer (PC) is extremely severe malignant disease with a five-year survival of less than 5%. Currently there is no reliable tool for the diagnosis of PC in its early stages. At the time of clinical symptoms most patients are in an advanced stage of the disease and the treatment does not usually have a significant effect. For these reasons emphasis is gradually shifting to the search for the suitable molecular markers for improvement of the diagnosis and assessment of the survival prognosis with respect to a possibility of surgical treatment. MiRNA represent one of the most promising markers, although, their examination in pancreatic tissue is a complicated process. One of the reasons is the very small amount of the source material coming from a fine needle biopsy. A second cause of problems is the subtle character of the pancreatic tissue resulting in significantly lower yields of molecular genetic analysis when compared to other epithelial tissues. An additional negative factor is heterogeneity of the tissue resulting in disproportionate representation of tumor cells within the sample. A suitable choice of procedures for isolation of nucleic acids (NA) and subsequent analysis including quantification of tumor cells is critical for accurate evaluation of the miRNA levels. This work is...
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Candidate genes screening for prostate cancer
Semaneková, Viera ; Mareš, Jaroslav (advisor) ; Šťovíček, Vratislav (referee)
Prostate carcinoma is considered to be one of the main medical problem in male population. Prostate carcinoma is the most frequently diagnosed malignancy in men and the death rate has the second position within all diagnosed malignancies in Czech Republic (ÚZIS). There is only one reliable diagnostic tool: PSA (prostate specific antigen). Level of PSA is often elevated in men with prostate carcinoma. This diploma thesis is focused on study of changes in gene expression in prostate carcinoma. Three candidate genes were analyzed: VCL (vinculin), SHB (Src homology 2 binding protein) and OCT3 (organic cation transporter 3). According to recent publications, these genes are related to tumor progression and they could have prognostic significance. In this thesis the following methodological approaches were used: 82 prostatic specimens were collected from patients and mRNA was isolated from these specimens; then RT-PCR was used to obtain cDNA, fragments were detected by electrophoresis. At the end statistical methods were used for evaluation. Relative expression of the genes in prostate carcinoma tissue was compared to relative expression of the genes in BPH (benign prostatic neoplasia) tissue. Results showed higher expression of genes SHB and OCT3 in prostate carcinoma tissue in compariscon to BPH...
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Sharka (Plum pox virus) of stone fruits
JAKUBÍKOVÁ, Hedvika
Plum pox virus causes one of the most devastating stone fruit diseases. The main target of this thesis is a detection of Plum pox virus in infected leaf tissue of Prunus domestica.. The presence of the virus in a plant material was confirmed by the RNA isolation and its use as a template for RT-PCR. Furthermore, the basic information about properties of the virus, common methods of the virus detection and protection possibilities against the virus is are included.
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