Osteoprotegerin (OPG) in Induced Chronic Obstructive Pulmonary Disease (COPD) Sputum

Exclusion Criteria

• •Healthy non-smokers and smokers
• •* Upper respiratory infection within the last 4 weeks.
• •* Subjects who have received research medication within the previous one month.
• •* Subjects unable to give informed consent.
• •* Any psychiatric condition rendering the patient unable to understand the nature, scope and possible consequences of the study Stable COPD patients
• •* Patients who have had an exacerbation which required treatment with oral steroids during the last 2 months prior to the visit
• •* Upper respiratory infection within the last 4 weeks
• •* Subjects who have received research medication within the previous one month
• •* Subjects unable to give informed consent
• •* Any psychiatric condition rendering the patient unable to understand the nature, scope and possible consequences of the study COPD patients with acute exacerbation
• •* Subjects who have received research medication within the previous one month
• •* Subjects unable to give informed consent
• •* Any psychiatric condition rendering the patient unable to understand the nature, scope and possible consequences of the study Asthma
• •* Upper respiratory infection within the last 4 weeks
• •* Subjects who have received research medication within the previous one month
• •* Subjects unable to give informed consent.
• •* Any psychiatric condition rendering the patient unable to understand the nature, scope and possible consequences of the study.
• •Bronchiectasis and cystic fibrosis
• •* Subjects who have received research medication within the previous one month.
• •* Subjects unable to give informed consent.
• •* Any psychiatric condition rendering the patient unable to understand the nature, scope and possible consequences of the study.