Search for dissertations about: "bacterial fitness"

Showing result 21 - 25 of 55 swedish dissertations containing the words bacterial fitness.

  2. 21. Microbiome Of Ecotoxicity Assays

    Author : Asa Motiei; Elena Gorokhova; Natàlia Corcoll; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biofilm; Microplastics; Suspended solids; Aquatic toxicology; Daphnia magna; Ecotoxicology; Bacterial colonization; Particle aggregation; Microbiome interaction; Standardization; Applied Environmental Science; tillämpad miljövetenskap;

    Abstract : Microorganisms are ubiquitous and present in animal microbiomes, particulates, and colonizable surfaces of test systems. From an ecotoxicological perspective, they are metabolically active biological compartments that respond to test conditions, including test substances. READ MORE

  4. 22. Bacterial virulence and adaptation mediated by two-component system signalling

    Author : Henrik Tomenius; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Virulence; atomic force microscopy; biofilm; adaptation; two-component system; signal transduction; gene regulation; phosphorylation; BarA; UvrY;

    Abstract : One of the most fundamental ways of signal perception and propagation is mediated by the bacterial two-component system (TCS). These types of systems mediate bacterial adaptation that may cause disease in a host due to expression of virulence factors. READ MORE

  5. 23. Roles of secreted bacterial factors in modulation of host cell signalling

    Author : Eric Toh; Sun Nyunt Wai; Teresa Frisan; Staffan Bohm; Ann-Beth Jonsson; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bacteria-host interaction; motility-associated killing factor A; outer membrane vesicles; cytolysin A; phosphatidylinositol 4-phosphate 5-kinase alpha; enhancer of zeste homologue 2; epigenetic modulation; Medical Cell Biology; medicinsk cellbiologi; mikrobiologi; Microbiology;

    Abstract : Pathogenic bacteria employ several secretion systems to release or inject virulence factors that may alter host cell processes, generate a replicative niche, and aid bacterial survival in adverse environments. This thesis presents my investigations on how bacterial factors can modulate host cell signalling mechanisms. READ MORE

  6. 24. Fluoroquinolone resistance in the environment and the human gut – Analysis of bacterial DNA sequences to explore the underlying genetic mechanisms

    Author : Anna Johnning; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Antimicrobial resistance; Quinolones; Pollution; Next generation sequencing; Bioinformatics; Next generation sequencing;

    Abstract : Fluoroquinolones (FQs) are synthetic, broad-spectrum antibiotics that target type II topoisomerases. High-level resistance is often caused by mutations in the target genes of FQs, especially in gyrA and parC. In contrast, plasmid-mediated resistance genes, such as qnr, often confer moderate levels of resistance. READ MORE

  7. 25. Colonization, persistence and virulence factors in Escherichia coli strains in the human intestinal microflora

    Author : Forough Nowrouzian; Göteborgs universitet; []
    Keywords : Escherichia coli; large intestine; infant; newborn; bacterial adhesins; hemolysins;

    Abstract : Escherichia coli is a member of the normal intestinal microflora of man and many animals. In this thesis, various aspects of the E. coli colonization pattern were studied, especially the role of so called virulence factors for persistence of E. coli in the gut microflora. READ MORE