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Lau Yin Kei. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2005. / Includes bibliographical references (leaves 58-79). / Abstracts in English and Chinese. / Acknowledgement --- p.I / Abstract --- p.IV / Abstract in Chinese --- p.VI / Abbreviations --- p.VIII / Introduction --- p.1 / Chapter 1.1 --- Prevalence of COPD and asthma in Hong Kong --- p.1 / Chapter 1.2 --- Players in pathogenesis of COPD --- p.2 / Chapter 1.3 --- Players in pathogenesis of asthma --- p.4 / Chapter 1.4 --- The use of exhaled breath condensate in previous studies --- p.6 / Chapter 1. 5 --- Brief overview of chemokines --- p.8 / Chapter 1.6 --- Objective of this study --- p.12 / Materials and methods --- p.14 / Chapter 2.1 --- Study population --- p.14 / Chapter 2.1.1 --- Patients with COPD and control subjects --- p.14 / Chapter 2.1.2 --- Patients with asthma and control subjects --- p.15 / Chapter 2.2 --- Lung function --- p.15 / Chapter 2.3 --- Dyspnoea score measurement of patients with COPD --- p.16 / Chapter 2.4 --- Classification of patients and asthma severity --- p.16 / Chapter 2.5 --- Skin prick test and blood tests --- p.16 / Chapter 2.6 --- Collection of exhaled breath condensate --- p.17 / Chapter 2.7 --- Measurement of constituent in EBC --- p.17 / Chapter 2.7.1 --- "Measurement of 8-isoprostane, MCP-1 and GROα in patients with COPD and the corresponding control subjects" --- p.17 / Chapter 2.7.2 --- Measurement of eotaxin and MDC of patients with asthma and the corresponding control subjects --- p.18 / Chapter 2.8 --- Reproducibility of exhaled breath constituent --- p.18 / Chapter 2.8.1 --- "Assessment of reproducibility of the exhaled MCP-1, GROα and8- isoprostane measurements" --- p.19 / Chapter 2.8.2 --- Assessment of reproducibility of the exhaled eotaxin and MDC measurement --- p.19 / Chapter 2.9 --- Statistical analysis --- p.19 / Results --- p.21 / Chapter 3.1 --- Patients with COPD and corresponding control subjects --- p.21 / Chapter 3.2 --- Patients with asthma and corresponding control subjects --- p.28 / Discussion --- p.36 / Chapter 4.1 --- "Exhaled 8-isoprostane, GRO-α and MCP-1 of patients with COPD and corresponding control subjects" --- p.36 / Chapter 4.2 --- Exhaled eotaxin and MDC from patients with asthma and corresponding control subjects --- p.43 / Chapter 4.3 --- Technical aspects of EBC assessment --- p.49 / Future prospect --- p.54 / Conclusion --- p.56 / References --- p.58 / Tables and Figures / Table 1. Demographics of the COPD and control subjects --- p.22 / Figure 1. The level of 8-isoprostane in the exhaled breath condensate of COPD and control subjects --- p.23 / Figure 2. The level of GROa in the exhaled breath condensate of COPD and control subjects --- p.25 / "Figure 3 Bland and Altman's Plot of the repeatability of 8-isoprostane, GROa and MCP-1 in the exhaled breath condensate of normal controls" --- p.27 / Table2. Clinical and physiological details of the subjects --- p.29 / Figure 4. Level of eotaxin in exhaled breath condensate of asthma and control subjects --- p.30 / Figure 5 Level of MDC in exhaled breath condensate of asthma and control subjects --- p.31 / Table 3. Levels of eotaxin and MDC in exhaled breath condensate of asthma subjects on different dose of inhaled corticosteroids --- p.33 / Figure 6. Relationship between exhaled breath condensate level of MDC and total serum IgE level --- p.35