In vitro effects of doxycycline on inflammatory cytokines and gelatinases in chronic rhinosinusitis

Background/Aim: The pathophysiology of chronic rhinosinusitis (CRS) is unknown, but the majority of patients suffer from eosinophilic infiltration. We hypothesised that doxycycline might alter the eosinophil-associated expression of interleukin-5 (IL-5) and eotaxin-3 in CRS and also the expression o...

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Hauptverfasser: Sommer, Ulrich (VerfasserIn) , Schultz, Johannes D. (VerfasserIn) , Großbaier, Judith (VerfasserIn) , Stern-Sträter, Jens (VerfasserIn) , Hörmann, Karl (VerfasserIn) , Sauter, Alexander (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2012
In: In vivo
Year: 2012, Jahrgang: 26, Heft: 3, Pages: 369-374
ISSN:1791-7549
Online-Zugang:Verlag, kostenfrei, Volltext: http://iv.iiarjournals.org/content/26/3/369
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Verfasserangaben:J. Ulrich Sommer, Johannes D. Schultz, Judith Grossbaier, Jens Stern-Straeter, Karl Hörmann and Alexander Sauter

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520 |a Background/Aim: The pathophysiology of chronic rhinosinusitis (CRS) is unknown, but the majority of patients suffer from eosinophilic infiltration. We hypothesised that doxycycline might alter the eosinophil-associated expression of interleukin-5 (IL-5) and eotaxin-3 in CRS and also the expression of matrix metalloproteinase 9 (MMP-9), being involved in the tissue-remodelling in CRS. Materials and Methods: After obtaining samples from 10 CRS patients with and without nasal-polyposis undergoing functional endoscopic sinus surgery and two healthy individuals, the expression of IL-5, eotaxin-3 and MMP-9 were evaluated by an ELISA technique. The tested agent was doxycycline at 0.1 or 1 mg/ml. Results: IL-5 levels remained unchanged, but eotaxin-3 levels actually increased under doxycycline treatment. The only marker showing a slight drop was MMP-9, albeit not significant. Conclusion: As first clinical trials with doxycycline in the treatment of CRS produced reasonable results we could demonstrate that the underlying pathology is more complex, and doxycycline affects only a part of the factors believed to support the chronic infection of the respiratory mucosa. 
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650 4 |a inflammatory cytokines 
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