The prevalence of ascariasis in COPD patients with and without concomitant pulmonary aspergillosis and in controls will be determined. To assess the influence of ascaridosis on the development of pulmonary aspergillosis in COPD patients cytokine status of patients will be studied.
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Serum interleukin-1B levels in COPD patients and controls
Timeframe: up to 12 months
Serum interleukin-4 levels in COPD patients and controls
Timeframe: up to 12 months
Serum interleukin-6 levels in COPD patients and controls
Timeframe: up to 12 months
Serum tumor necrosis factor-a levels in COPD patients and controls
Timeframe: up to 12 months
Serum interferon-gamma levels in COPD patients and controls
Timeframe: up to 12 months
Correlation between cytokine status with chronic pulmonary aspergilosis insidence rate in COPD patients with and without ascariasis
Timeframe: up to 12 months