eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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vol. 8

Clinical research
Inflammatory markers in chronic obstructive pulmonary disease patients with different α1 antitrypsin genotypes

Danielius Serapinas
Brigita Sitkauskiene
Raimundas Sakalauskas

Arch Med Sci 2012; 8, 6: 1053-1058
Online publish date: 2012/12/19
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Introduction: Chronic obstructive pulmonary disease (COPD) has been recently defined as a systemic pulmonary inflammatory disease, and congenital α1 antitrypsin deficiency is one of the well-established genetic risk factors for chronic obstructive pulmonary disease. The aim of our study was to evaluate the possible associations of α1 antitrypsin with inflammatory markers – CRP, sCD14, TNF-α, sTNFR-1, and sTNFR-2 – in patients with COPD with different α1 antitrypsin genotypes.

Material and methods: Serum biomarkers from patients (n = 355) with COPD, defined according to the GOLD criteria, were analyzed using commercial ELISA kits; α1 antitrypsin concentrations were determined by nephelometry, and α1 antitrypsin phenotyping was carried out by means of isoelectric focusing.

Results: No significant differences in CRP, TNF-α, sTNFR-1, sTNFR-2, and sCD14 levels were found comparing COPD patients with different genotypes. In patients without α1 antitrypsin deficiency (PI*MM), a significant negative correlation between lung function (FEV1) and serum α1 antitrypsin (r = –0.522, p = 0.03) and CRP concentration (r = –0.590, p = 0.011) was detected. The level of α1 antitrypsin positively correlated with: a) CRP concentration (r = 0.671, p = 0.005), b) sCD14 (r = 0.510, p = 0.008) and c) sTNFR-1 (r = 0.567, p = 0.007).

Conclusions: In patients without α1 antitrypsin deficiency, the positive association of α1 antitrypsin concentration with CRP, sCD14, and sTNFR-1 and the negative association with FEV1 show the importance of α1 antitrypsin as a marker of systemic inflammation.

chronic obstructive pulmonary disease, α1 antitrypsin, inflammatory markers

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