Peripheral 5-HT7 receptors as a new target for prevention of lung injury and mortality in septic rats

ÇADIRCI E., HALICI Z., BAYIR Y., ALBAYRAK A., Karakus E., Polat B., ...Daha Fazla

IMMUNOBIOLOGY, cilt.218, sa.10, ss.1271-1283, 2013 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 218 Sayı: 10
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.imbio.2013.04.012
  • Dergi Adı: IMMUNOBIOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1271-1283
  • Anahtar Kelimeler: Sepsis, 5-HT7 receptor, CLP, Rat, NF-kappa B, RESPIRATORY-DISTRESS-SYNDROME, PUNCTURE-INDUCED SEPSIS, TUMOR-NECROSIS-FACTOR, NF-KAPPA-B, SMOOTH-MUSCLE-CELLS, CECAL LIGATION, PROINFLAMMATORY CYTOKINES, POLYMICROBIAL SEPSIS, OVARIECTOMIZED RATS, AIRWAY INFLAMMATION
  • Atatürk Üniversitesi Adresli: Evet

Özet

Sepsis is a complex pathophysiological event involving metabolic acidosis, systemic inflammatory response syndrome, tissue damage and multiple organ dysfunction syndrome. Although many new mechanisms are being investigated to enlighten the pathophysiology of sepsis, there is no effective treatment protocol yet. Presence of 5-HT7 receptors in immune tissues prompted us to hypothesize that these receptors have roles in inflammation and sepsis. We investigated the effects of 5-HT7 receptor agonists and antagonists on serum cytokine levels, lung oxidative stress, lung histopathology, nuclear factor kappa B (NF-kappa B) positivity and lung 5-HT7 receptor density in cecal ligation and puncture (CLP) induced sepsis model of rats. Agonist administration to septic rats increased survival time; decreased serum cytokine response against CLP; decreased oxidative stress and increased antioxidant system in lungs; decreased the tissue NF-kappa B immunopositivity, which is high in septic rats; and decreased the sepsis-induced lung injury. In septic rats, as a result of high inflammatory response, 5-HT7 receptor expression in lungs increased significantly and agonist administration, which decreased inflammatory response and related mortality, decreased the 5-HT7 receptor expression.