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84th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

08.05. - 12.05.2013, Nürnberg

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Genetic polymorphism of NOS2 Gene in nasal polyposis in Eastern Europe

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  • corresponding author Iuliu Vlad Catana - ORL-HNS, UMF"IULIU HATIEGANU" CLUJ-NAPOCA, Cluj Napoca, Romania
  • Alma Maniu - ORL-HNS, UMF"IULIU HATIEGANU" CLUJ-NAPOCA, Cluj Napoca, Romania
  • Radu Popp - MOLECULAR DEPARTMENT UMF "IULIU HATIEGANU" CLUJ-NAPOCA, Cluj Napoca, Romania
  • Andreea Catana - MOLECULAR DEPARTMENT UMF "IULIU HATIEGANU" CLUJ-NAPOCA, Cluj Napoca, Romania
  • Marcel Cosgarea - ORL-HNS, UMF"IULIU HATIEGANU" CLUJ-NAPOCA, Cluj Napoca, Romania

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 84. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. Nürnberg, 08.-12.05.2013. Düsseldorf: German Medical Science GMS Publishing House; 2013. Doc13hnod646

doi: 10.3205/13hnod646, urn:nbn:de:0183-13hnod6468

Published: April 15, 2013

© 2013 Catana et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

Text

Introduction: Polymorphisms for genes encoding chemosensitive signalling proteins like NOS2, might contribute to the variability in individual susceptibility to nasal polyposis. NO produced by the inducible NO synthase enzyme NOS2A is generated at high levels in certain types of inflammation, so that the role of NOS2 might be important in nasal polyposis etiopathogeny.

Objectives: This is a cross-sectional, randomized, case control study for the evaluation of the frequency of NOS2 polymorphism alleles among patients with nasal polyposis.

Subjects: The study included 92 cases of nasal polyposis diagnosed patients (nasal endoscopy and CT scan exam), and 107 healthy unrelated controls.

Method: NOS2 genotyping was carried out using PCR amplification of relevant gene fragment was followed by restriction enzyme digestion. Detection of the variant alleles was determined through analysis of resulting restriction fragment length polymorphism (RFLP) followed by gel electrophoresis.

Results: Molecular analysis revealed an increased frequency of NOS2 variant allele in the study group compared to the control group.

Conclusion: The main finding of our study is that mutant genotypes seem to be associated with an increased risk for nasal polyposis.

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