Effects of aminoguanidine and antioxidant erdosteine on bleomycin-induced lung fibrosis in rats


Yildirim Z., Turkoz Y., Kotuk M., Armutcu F., Gurel A., Iraz M., ...Daha Fazla

NITRIC OXIDE-BIOLOGY AND CHEMISTRY, cilt.11, sa.2, ss.156-165, 2004 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 2
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.niox.2004.07.011
  • Dergi Adı: NITRIC OXIDE-BIOLOGY AND CHEMISTRY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.156-165
  • Anahtar Kelimeler: bleomycin, lung fibrosis, nitric oxide, aminoguanidin, erdosteine, NITRIC-OXIDE SYNTHASE, IDIOPATHIC PULMONARY FIBROSIS, OXIDATIVE DAMAGE, PEROXYNITRITE, INJURY, MICE, ACID, ESTER, SERUM
  • İnönü Üniversitesi Adresli: Evet

Özet

Reactive oxygen and nitrogen species have been implicated in the pathogenesis of bleomycin -induced lung fibrosis. The effects of aminoguanidine and erdosteine on the bleomycin-induced lung fibrosis were evaluated in rats. The animals were placed into five groups: Vehicle + vehicle, vehicle + bleomycin (2.5U/kg), bleomycin + aminoguanidine (200mg/kg), bleomycin + erdosteine (10mg/kg), and bleomycin + erdosteine + aminoguanidine. Bleomycin administration resulted in prominent lung fibrosis as measured by lung hydroxyproline content and lung histology, which is completely prevented by erdosteine and aminoguanidine. A strong staining for nitro tyrosine antibody in lung tissue and increased levels of lung NO were found in bleomycin group, that were significantly reduced by aminoguanidine and erdosteine. Aminoguanidine and erdosteine significantly prevented depletion of superoxide dismutase and glutathione peroxidase and elevated myeloperoxidase activities, malondialdehyde level in lung tissue produced by bleomycin. Data presented here indicate that aminoguanidine and erdosteine prevented bleomycin-induced lung fibrosis and that nitric oxide mediated tyrosine nitration of proteins plays a significant role in the pathogenesis of bleomycin-induced lung fibrosis. Also our data suggest that antifibrotic affect of antioxidants may be due to their inhibitory effect on nitric oxide generation in this model. (C) 2004 Elsevier Inc. All rights reserved.