Microbiology (Theses and Dissertations): Recent submissions
Now showing items 21-40 of 95
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Investigating the interplay between the Tup1-Cyc8 and Swi-Snf chromatin remodelling complexes in Saccharomyces cerevisiae
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2021)Swi-Snf is an ATP dependent chromatin remodelling complex which acts as a co-activator of gene transcription by its ability to open up densely packed chromatin by removal of nucleosomes. Conversely, Tup1-Cyc8 ... -
Impact of Metabolites on the Intestinal Mucosa and Development of Inflammation
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2021)The intestinal epithelial mucosal barrier plays a pivotal role in the maintenance of intestinal homeostasis, acting as an important barrier between microbes and the host s innate immune system. The metabolite-rich environment ... -
Functional characterisation of small RNAs in Acinetobacter baumannii using Hi-GRIL-seq
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2021)Acinetobacter baumannii is a priority pathogen that is a leading source of nosocomial multidrug resistant (MDR) infections worldwide. A key to the success of A. baumannii is the ability to quickly adapt to changing ... -
Significance of the chromosomal positions of the genes encoding Integration Host Factor and DNA gyrase in Salmonella.
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2021)In this thesis, two studies are described that built upon the idea of the chromosomal gene importance. In both studies Salmonella was used as a model organism. In the first study, ihfA and ihfB ? genes that encode ... -
Investigating chromatin remodelling by the Swi-Snf and Tup1-Cyc8 complexes
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2020)Swi-Snf is an ATP-dependent chromatin remodelling complex which generally acts as a co-activator of gene transcription via its removal of promoter nucleosomes. Conversely, Tup1-Cyc8 (Ssn6) is a co-repressor complex which ... -
Unravelling a food derived bioactive peptide with dual functionality of antimicrobial and immunomodulatory properties
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2020)In this thesis, a computational data mining and feature based approach to unravel the abundance of unexplored peptides from nature and to identify potent, novel antimicrobial peptides (AMPs) from phyto-proteins is proposed. ... -
Consequences of exchanging the NAP-encoding genes fis and dps in Salmonella enterica Serovar Typhimurium
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2020)The genes encoding nucleoid associated proteins (NAPs) are syntenic among γ-Proteobacteria, and several factors are known to impact gene expression at a given locus, including changes in gene dosage caused by DNA replication. ... -
Semliki Forest virus based gene therapy of rat glioma
(Trinity College (Dublin, Ireland). Department of Microbiology, 2009)Glioblastoma multiforme (GBM) is an invariably fatal neoplastic lesion of the CNS. Despite advances in the treatment of cancer in the recent years, the prognosis of GBM has changed little and patients who undergo surgical ... -
Molecular genetic typing characteristics of human and animal isolates of Staphylococcus aureus
(Trinity College (Dublin, Ireland). Department of Microbiology, 2009)Staphylococcus aureus is a commensal and an opportunistic pathogen of both man and animals. It is capable of causing a broad spectrum of diseases, ranging in severity from superficial skin complaints such as boils and ... -
Investigating regulation of gene transcription by the Tup1-Ssn6 co-repressor complex in Saccharomyces cerevisiae
(Trinity College (Dublin, Ireland). Department of Microbiology, 2015)Transcriptional repression is an important part of gene regulation. In the budding yeast Saccharomyces cerevisiae the Tup1-Ssn6 corepressof complex is recruited to gene promoters to repress transcription in response to ... -
Discovery and engineering of antimicrobial peptides to combat food spoilage
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2019)This work sought to use a bioinformatics based approach to discover plant derived antimicrobial peptides which were structurally similar to human β-defensin 3 (HBD3) and which possessed effective antimicrobial activity ... -
FNR is a regulator of Salmonella pathogenicity Island 2 in Salmonella Typhimurium
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2019)During infection, S. Typhimurium employs Salmonella pathogenicity island (SPI)-encoded type three secretion systems (T3SS) 1 and 2 to invade and survive in host cells. However, expression of SPI-2 is seen at the epithelial ... -
Investigating factors that contribute to the ability of Staphylococcus aureus to colonise atopic dermatitis skin
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2019)The skin of atopic dermatitis (AD) patients is frequently colonised by Staphylococcus aureus. Colonisation by S. aureus correlates with disease severity and exacerbated disease symptoms. The factors involved in S. aureus ... -
Analysis of the role of human papillomaviruses and the p53/Rb tumour suppressor genes in the development of cutaneous squamous cell carcinoma
(Trinity College (Dublin, Ireland). Department of Microbiology, 2000)Nonmelanoma skin cancers (NMSC) are the most frequent cancers in Caucasian populations. Renal transplant recipients (RTR) are at an increased risk of neoplasia, particularly skin cancer. Studies on anogenital cancer have ... -
Identification and characterisation of an FK506-binding protein from Plasmodium falciparum
(Trinity College (Dublin, Ireland). Department of Microbiology, 2004)Malaria remains one of the most significant diseases worldwide. The most common and severe form of the disease is caused by Plasmodium falciparum. The need for new anti-malarial compounds has intensified in recent years ... -
Recombinant vaccines against infectious pancreatic necrosis virus
(Trinity College (Dublin, Ireland). Department of Microbiology, 2000)The rapid expansion of the aquaculture industry in recent years has led to an increase in disease outbreaks. Over the last few years bacterial disease problems have been brought under control, largely due to the use of a ... -
Variations in silver stained nucleolar organiser regions(AgNORs) in normal, irradiated and neoplastic tissues
(Trinity College (Dublin, Ireland). Department of Microbiology, 2001)Nucleolar organiser regions (NORs) are loops of ribosomal DNA which contain the genes that transcribe to ribosomal RNA. They are situated on the short arm of the acrocentric human chromosomes 13, 14, 15, 21 and 22. Several ... -
Helicobacter pylori infection : in vitro diagnostic methods, antimicrobial susceptibility testing, epidemiology of recrudescence and clarithromycin resistance
(Trinity College (Dublin, Ireland). Department of Microbiology, 2000)H. pylori is a Gram-negative, non-spore forming, curved bacterium that colonises the gastric epithelium of the human stomach. H. pylori is firmly established as an aetiological agent in peptic ulcer disease and successful ... -
Interaction of heat shock proteins with splicing machinery components during and after thermal stress in Saccharomyces cerevisiae
(Trinity College (Dublin, Ireland). Department of Microbiology, 2000)This thesis is a study of the amehorative effects of Heat Shock Proteins (Hsps) on the cellular process of mRNA splicing during and after thermal stress in Saccharomyces cerevisiae. Splicing is a vital process that is known ... -
Microevolution in Helicobacter pylori
(Trinity College (Dublin, Ireland). Department of Microbiology, 2002)Helicobacter pylori chronically colonises the human gastric mucosa. It is a major cause of chronic active gastritis and peptic ulcer disease and is associated with the development of gastric neoplasia. The population ...
