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Polymorphisms in the promoter region of IL10 gene are associated with virus etiology of infant bronchiolitis

World Journal of Pediatrics 2018年第6期14卷 594-600页

作者： Annukka Holster johanna terasjarvi Juho Vuononvirta Petri Koponen Ville Peltola Merja Helminen Qiushui He Matti Korppi Kirsi Nuolivirta Seinajoki Central Hospital Hanneksenrinne 760220 SeinajokiFinland Department of Medical Microbiology and Immunology Turku UniversityTurkuFinland Tampere Center forChild Health Research Tampere University andU niversity HospitalTampereFinland Department of Pediatrics and Adolescent Medicine Turku University Hospital and Child and Youth Research InstituteUniversity of T urkuTurkuFinland Department of Medical Microbiology Capital Medical UniversityBeijingChina

Background Bronchiolitis is the most common infection leading to hospitalization in infancy. Interleukin-10 (IL-10) is an anti-inflammatory cytokine, and in our previous study, IL10 gene rs1800896 (-1082A/G) polymorphism was associated with viral etiology of infant bronchiolitis. The objective of this study was to evaluate the associations between IL10 single nucleotide polymorphisms (SNPs) at rs1800890 (-3575A/T), rs1800871 (-819C/T) or rs1800872 (-592C/A) either alone or combined with the SNP at rs1800896 (-1082G/A), and the etiology and severity of infant bronchiolitis. Methods Data on four IL10 SNPs were available from 135 full-term infants, hospitalized for bronchiolitis at age less than 6 months, and from 378 to 400 controls. Viral etiology was studied, and oxygen support, feeding support and the length of stay in hospital were recorded during bronchiolitis hospitalization. Results Infants with rhinovirus bronchiolitis had the IL10 rs1800890 variant AT or TT genotype less often (18.2%) than controls (63.3%, P=0.03), and likewise, had the IL10 rs1800896 variant AG or GG genotype less often (27.3%) than con-trols (65.5%, P=0.009). Twenty-eight infants with bronchiolitis had the variant–variant Grs1800896Trs1800890 haplotype, and none of them had rhinovirus infection. The IL10 rs1800871 or rs1800872 genotypes showed no associations with viruses. No association was found between any genotypes and bronchiolitis severity measures. Conclusion IL10 rs1800890 and rs1800896 polymorphisms differed between infants with rhinovirus bronchiolitis and con-trols, but not between infants with respiratory syncytial virus bronchiolitis and controls.

关键词： Bronchiolitis IL10 gene polymorphism Infant Respiratory syncytial virus

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