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Modulatory effects of antimicrobials on Panton-Valentine Leukocidin gene expression in community-associated methicillin-resistant staphylococcus aureus in vitro and disease severity in vivo in a murine model.

Wong, Kai Yi. / Thesis (M.D.)--Chinese University of Hong Kong, 2011. / Includes bibliographical references (leaves 101-110). / Abstracts in English and Chinese. / Abstract --- p.4 / 摘要 --- p.7 / Acknowledgements --- p.9 / List of Tables --- p.10 / List of Figures --- p.11 / List of Abbreviations and Symbols --- p.12 / Chapter Chapter 1 --- Introduction --- p.14 / Chapter 1.1 --- Staphylococcus aureus --- p.14 / Chapter 1.2 --- Methicillin-resistant Staphylococcus aureus (MRSA) --- p.14 / Chapter 1.2.1 --- Methicillin resistance of MRSA --- p.15 / Chapter 1.2.2 --- Staphylococcal Chromosomal Cassette mec (SCCmec) --- p.16 / Chapter 1.2.3 --- Hospital-associated MRSA (HA-MRSA) and Community-associated MRSA (CA-MRSA) --- p.22 / Chapter 1.2.3.1 --- Hospital-associated MRSA (HA-MRSA) --- p.23 / Chapter 1.2.3.2 --- Community-associated MRSA (CA-MRSA) --- p.23 / Chapter 1.2.4 --- Pathogenesis of MRSA infection --- p.27 / Chapter 1.2.4.1 --- Possible virulence genes contributing to necrotizing pneumonia --- p.29 / Chapter 1.2.4.1.1 --- Panton-Valentine Leukocidin (PVL) --- p.29 / Chapter 1.2.4.1.2 --- Phenol-soluble modulins (PSMs) --- p.36 / Chapter 1.3 --- Evolution of MRSA --- p.36 / Chapter 1.4 --- Epidemiology of MRSA --- p.38 / Chapter 1.4.1 --- Epidemiology of MRSA worldwide --- p.38 / Chapter 1.4.1.1 --- Epidemiology of HA-MRSA worldwide --- p.38 / Chapter 1.4.1.2 --- Epidemiology of CA-MRSA worldwide --- p.39 / Chapter 1.4.2 --- Epidemiology of MRSA in Hong Kong --- p.40 / Chapter 1.5 --- Clinical significance of MRSA --- p.41 / Chapter 1.6 --- Antibiotics --- p.43 / Chapter 1.6.1 --- Beta-lactams --- p.43 / Chapter 1.6.2 --- Fluoroquinolone --- p.44 / Chapter 1.6.3 --- Linezolid --- p.45 / Chapter 1.6.4 --- Glycopeptides --- p.45 / Chapter 1.6.5 --- Aminoglycosides --- p.46 / Chapter 1.6.6 --- Fusidic acid --- p.46 / Chapter 1.6.7 --- Clindamycin --- p.47 / Chapter 1.7 --- Hypothesis --- p.47 / Chapter Chapter 2 --- Methods and Materials --- p.50 / Chapter 2.1 --- Bacterial isolate --- p.50 / Chapter 2.2 --- Effect of subinhibitory antibiotics on the expression of mRNA in MRSA in vitro --- p.53 / Chapter 2.2.1 --- Collection of bacterial fraction --- p.53 / Chapter 2.2.2 --- RNA extraction and DNA digestion --- p.53 / Chapter 2.2.3 --- Reverse transcription for cDNA synthesis --- p.54 / Chapter 2.2.4 --- Quantitative real-time PCR (qPCR) analysis (pvl and psma\-A expression) --- p.55 / Chapter 2.2.5 --- Preparation of standard controls for quantification of DNA copy number in qPCR reactions... --- p.58 / Chapter 2.3 --- Effect of subinhibitory concentration of antibiotics on MRSA pneumonia in a murine model --- p.60 / Chapter 2.4 --- Statistical Analysis --- p.62 / Chapter Chapter 3 --- Results --- p.63 / Chapter 3.1 --- Effect of subinhibitory antibiotics on the expression ofmRNA in MRSA in vitro --- p.63 / Chapter 3.2 --- Effect of subinhibitory concentration of antibiotics on MRSA pneumonia in a murine model --- p.74 / Chapter Chapter 4 --- Discussion --- p.80 / Chapter 4.1 --- Effect of subinhibitory antibiotics on the expression of mRNA in MRSA in vitro --- p.81 / Chapter 4.2 --- Effect of subinhibitory concentration of antibiotics on MRSA pneumonia in a murine model --- p.87 / Chapter 4.3 --- Correlation of effects of subinhibitory antibiotics on the expression ofmRNA in MRSA in vitro and on MRSA pneumonia in a murine model --- p.91 / Chapter 4.4 --- Limitations of Study --- p.95 / Chapter 4.5 --- Future Work --- p.95 / Chapter Chapter 5 --- Conclusions --- p.97 / References --- p.99 / Chapter Appendix I- --- Materials and Reagents --- p.109 / Chapter Appendix II- --- Average and standard deviation of the copy number ratio (pvl or psmal-4 copy number/JdiS1 copy number) --- p.111 / Chapter Appendix III- --- In-vivo experimental data for infected control group and seven antibiotic groups --- p.116

Identiferoai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_327466
Date January 2011
ContributorsWong, Kai Yi., Chinese University of Hong Kong Graduate School. Division of Microbiology.
Source SetsThe Chinese University of Hong Kong
LanguageEnglish, Chinese
Detected LanguageEnglish
TypeText, bibliography
Formatprint, 122 leaves : col. ill. ; 30 cm.
RightsUse of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/)

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