Nitric oxide metabolites as biomarkers for follow-up after chronic rhinosinusitis surgery

Deroee, Armin Farajzadeh; Naraghi, Mohsen; Sontou, Alain Fabrice; Ebrahimkhani, Mohammad Reza; Dehpour, Ahmad Reza
March 2009
American Journal of Rhinology & Allergy;Mar2009, Vol. 23 Issue 2, p159
Academic Journal
Background: Nitric oxide (NO) has a variety of effects on the pathophysiology of the nasal cavity and seems to play an important role in inflammation. It is increased in the common cold but decreased in acute and chronic rhinosinusitis (CRS). Exhaled NO increases after endoscopic sinus surgery in CRS. In our previous study we showed that NO metabolite (nitrate and nitrite) levels are increased in the sinus cavity of CRS patients. We hypothesized that NO metabolite levels are increased to normal in the nasal lavage of CRS patients after endoscopic sinus surgery and NO metabolites in the nasal lavage can be used as indicators of the disease status after surgery. Methods: This study was performed on 52 patients with CRS who did not respond to medical therapy and who underwent surgery. NO metabolite levels were measured in nasal lavages of the patients before surgery and 2 months after surgery. Results: NO metabolite levels (mean ± SEM) were 18.11 ± 3.08 μmol/L and 35.97 ± 4.64 μmol/L in nasal lavages of patients before and after surgery, respectively. The levels of NO metabolites were increased significantly (p < 0.01) after surgery in nasal lavages and patients reported significant improvement based on the visual analog scoring after the operation. Conclusion: NO metabolite levels were decreased in nasal lavages of CRS patients and were increased to normal levels after surgery along with improvement of the disease. NO metabolite levels may be used as an indicator for the follow-up of patients after endoscopic sinus surgery.


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