Alpha-1 antitrypsin levels and polymorphisms in interstitial lung diseases

DEMİR N., ERÇEN DİKEN Ö., KARABULUT H. G., KARNAK D., KAYACAN O.

Turkish Journal of Medical Sciences, cilt.47, sa.2, ss.476-482, 2017 (SCI-Expanded, Scopus, TRDizin)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 47 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.3906/sag-1508-76
  • Dergi Adı: Turkish Journal of Medical Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.476-482
  • Anahtar Kelimeler: Alpha-1 antitrypsin deficiency, idiopathic interstitial pneumonias, interstitial lung disease
  • Sağlık Bilimleri Üniversitesi Adresli: Hayır

Özet

Background/aim: Alpha-1 antitrypsin deficiency may be a potential predisposing factor for interstitial lung fibrosis. We investigated alpha-1 antitrypsin levels and its polymorphisms in patients with interstitial lung disease. Materials and methods: A total of 103 interstitial lung disease patients were compared. Results: The mean alpha-1 antitrypsin level in idiopathic interstitial pneumonia patients was 1.67 ± 0.33 g/L, and it was 1.54 ± 0.37 g/L in patients with nonidiopathic interstitial pneumonia (P = 0.13). Low alpha-1 antitrypsin levels were more frequently observed in nonidiopathic interstitial pneumonia patients compared with idiopathic interstitial pneumonia, but the difference was not statistically significant (8.9% vs. 0%, respectively, P = 0.4). In 100 patients, the normal PiMM genotype was detected, while abnormal ones (PiMZ, n = 2, 1.9%; PiMS, n = 1, 0.97%) were determined in three cases. When the frequency of alpha-1 antitrypsin polymorphism in interstitial lung disease patients was compared with the data of the healthy population, no significant difference was detected for the PiMZ and PiMS variants (P = 0.15 and P = 0.44, respectively). Conclusion: Lower levels of serum alpha-1 antitrypsin were more frequent in nonidiopathic interstitial pneumonia patients than idiopathic interstitial pneumonia without an increase in genetic polymorphism. The difference was not statistically significant.