Low SPINK5 expression in chronic rhinosinusitis

The Laryngoscope
Kai FruthJuergen Brieger

Abstract

Chronic rhinosinusitis (CRS) is a multifactorial disease that probably arises as a result of genetic diversity and environmental factors. SPINK5 is a serine protease inhibitor, which is supposed to be an important regulator of epithelial barrier maintenance. The role of SPINK5 polymorphisms and expression in CRS, especially in individuals with aspirin intolerance, is unclear. SPINK5 single-nucleotide polymorphisms (SNPs) and SPINK5 expression levels were correlated with CRS without (CRSsNP) and with nasal polyps (CRSwNP), aspirin intolerance, asthma, and allergies. One hundred four nasal tissue samples, 15 from patients with CRSsNP, 59 from patients with CRSwNP, and 30 from healthy controls of the inferior turbinate, were analyzed for their SPINK5 status. Genotypes of four SPINK5 single nucleotide polymorphism (SNPs; G1258A, G2475T, A2915G, and A1103G), as well as SPINK5 mRNA expression levels, were determined by polymerase chain reaction. No correlation between any SPINK5 SNP and CRSsNP, CRSwNP, or allergies and asthma was observed. The heterozygous SNPs G1258A and A1103G were observed more frequently in aspirin-intolerant patients; the homozygous (A/A) genotype of SNP 1258 and the homozygous (G/G) genotype SNP 1103 were less ...Continue Reading

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