Relationship of the Content of Systemic and Endobronchial Soluble Molecules of CD25, CD38, CD8, and HLA-I-CD8 and Lung Function Parameters in COPD Patients

Table 1

Characteristics of patients with exacerbation of COPD and healthy nonsmokers included in the study.

		COPD
	Healthy nonsmokers	Moderate	Severe
Subjects (n)	21	44	47
Age (years)	53.1 ± 7.8	56.1 ± 4.6	63.2 ± 4.3
Smoking pack-years	0	37.5 ± 5.8	39.2 ± 4.2
FEV1 % pred	105.6 ± 3.8	62.8 ± 4.6	40.5 ± 3.9
FEV1/FVC%	108.1 ± 3.7	61.6 ± 4.4	49.1 ± 7.9

Data were presented as mean ± SD. COPD: chronic obstructive pulmonary disease; pack-years: number of cigarettes packs per day multiplied by the number of smoking years; FEV₁: forced expiratory volume in one second; % pred: % predicted; FVC: forced vital capacity.