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Eicosanoid imbalance correlates in vitro with the pattern of clinical symptoms of Samter's triad
U Forster1, S Strathmann, D Schafer
1Department of Otorhinolaryngology, Charite-Universitatsmedizin, Berlin, Germany. ulrike.foerster@charite.de
Background:
Hypersensitivity to non-steroidal anti-inflammatory drugs (NSAIDs) is often associated with chronic rhinosinusitis (CRS), nasal polyps (CRSwNP) and asthma, together known as Samter's triad. The disease is characterised by eicosanoid imbalance. In our study, we determined clinical and laboratory parameters in respect of three groups of patients: 1) CRSwNP, 2) CRSwNP and asthma (CRSwNP-A), and 3) CRSwNP with asthma and NSAID-triggered hypersensitivity (CRSwNP-AA). Our main goal was to improve the characterisation of the stages of development in Samter's triad, pointing to the homogeneous or heterogeneous course of disease.
Methodology:
Forty-three patients (10 CRSwNP, 14 CRSwNP-A, 19 CRSwNP-AA) and 10 control subjects were included in the study. Nasal assessment using the CRS visual analogue score, endoscopy- and computer tomography scores, allergy tests, analysis of sinus surgeries, asthma severity and in vitro functional eicosanoid tests (FET) with peripheral blood leucocytes were performed.
Results:
The scores reflecting CRS symptoms such as nasal congestion, nasal discharge and smell impairment differed between the patients groups reflecting the severity of disease (CRSwNP-AA > CRSwNP-A > CRSwNP). Eicosanoid imbalance correlated with nasal congestion, nasal discharge and loss of smell.
Conclusion:
The data presented support the hypothesis of the continuous development of NSAID-triggered hypersensitivity, culminating in Samter's triad.
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