Association of prepro-orexin polymorphism with obstructive sleep apnea/hypopnea syndrome.

Abstract:

BACKGROUND:Because of the potential role of orexin neuronal circuitry in the regulation of sleep and wakefulness and arousal and breathing, it seems reasonable to speculate that abnormalities in the prepro-orexin gene could be relevant to studies of obstructive sleep apnea/hypopnea syndrome (OSAHS); and it might be a candidate gene in the pathogenesis of OSAHS. OBJECTIVE:The present study investigated whether single nucleotide polymorphisms (SNPs) in the human prepro-orexin gene are associated with OSAHS in Han Chinese people. METHODS:A total of 394 subjects (217 cases and 177 control subjects) were recruited from China. Diagnostic polysomnography was performed in all patients and control subjects. SNPs in potentially functional regions of the gene were identified; and genotypes, determined by direct sequencing. RESULTS:By sequencing the promoter, 2 exons, and the exon-intron junctions of the prepro-orexin gene, the g11182C>T SNP was identified. Statistical analysis showed that there were significant differences in the genotype distribution between patients with OSAHS and the control group (χ(2)(2) = 6.437, P = .04). Variant allele T of the g1182C>T polymorphism was more commonly found in patients with OSAHS as compared with control subjects (χ(2)(1) = 5.648, P = .017; odds ratio, 1.449; 95% confidence interval, 1.0466-1.968). CONCLUSIONS:Our results suggest that the prepro-orexin gene polymorphism g1182C>T is associated with susceptibility to OSAHS in Han Chinese. This study provides insights into the genetic information for future studies regarding this gene in OSAHS.

journal_name

Am J Otolaryngol

authors

Chen W,Ye J,Han D,Yin G,Wang B,Zhang Y

doi

10.1016/j.amjoto.2010.12.005

subject

Has Abstract

pub_date

2012-01-01 00:00:00

pages

31-6

issue

1

eissn

0196-0709

issn

1532-818X

pii

S0196-0709(10)00256-5

journal_volume

33

pub_type

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