RGD Reference Report - The polymorphism of IL-17 G-152A was associated with childhood asthma and bacterial colonization of the hypopharynx in bronchiolitis. - Rat Genome Database

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The polymorphism of IL-17 G-152A was associated with childhood asthma and bacterial colonization of the hypopharynx in bronchiolitis.

Authors: Chen, J  Deng, Y  Zhao, J  Luo, Z  Peng, W  Yang, J  Ren, L  Wang, L  Fu, Z  Yang, X  Liu, E 
Citation: Chen J, etal., J Clin Immunol. 2010 Jul;30(4):539-45. Epub 2010 May 2.
RGD ID: 4889139
Pubmed: PMID:20437253   (View Abstract at PubMed)
DOI: DOI:10.1007/s10875-010-9391-8   (Journal Full-text)

OBJECTIVE: Interleukin (IL)-17 plays an important role in the pathogenesis of asthma. We investigated the association between single-nucleotide polymorphism (SNP) of IL-17 (rs2275913, IL-17 G-152A) and asthma-related traits. Its effect on IL-17 production was also attractive. METHODS: One hundred and sixty eight childhood asthmatic patients, 144 bronchiolitis patients, and 205 healthy controls were recruited in this study. SNP rs2275913 was genotyped by polymerase chain reaction-restriction fragment length polymorphism. Peripheral blood mononuclear cells (PBMCs) from parts of healthy controls with different genotype were isolated and cultured with phytohaemagglutinin (PHA) for detection of IL-17 in the supernatants. RESULTS: SNP rs2275913 was associated with asthma (P = 0.03) in genotype frequency test. Children with homozygous A were 2.29 times more likely to have asthma than others (95% confidence interval 1.39-3.78, P = 0.001). The strength of associations was moderately higher by allergy comorbidity. Furthermore, SNP rs2275913 A allele was associated with abnormal lung function and serum total IgE in asthmatics, although the production of IL-17 by PHA-induced PBMC seemed to be not different among individuals with different genotypes. The distribution of SNP rs2275913 in bronchiolitis was marginally statistically different with controls and demonstrated a tendency close to that in asthma. Higher Streptococcus pneumoniae and Moraxella catarrhalis detection rates were shown in bronchiolitis patients with homozygous A allele than those with other genotypes (20.8% vs. 3.7%, P < 0.01 and 20.8% vs. 6.2%, P = 0.03). CONCLUSION: The preliminary results demonstrate that IL-17 SNP rs2275913 was associated with several asthma-related traits and confers genetic susceptibility to childhood asthma. It may be used to develop markers to assess the risk of asthma, especially in the bronchiolitis population. It may be a potential bridge to connect the bacterial colonization and the onset of asthma.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
asthma susceptibilityIAGP 4889139DNA:SNP:promoter:rs2275913 (human)RGD 
asthma susceptibilityISOIL17A (Homo sapiens)4889139; 4889139DNA:SNP:promoter:rs2275913 (human)RGD 
bronchiolitis susceptibilityIAGP 4889139DNA:SNP:promoter:rs2275913 (human)RGD 
bronchiolitis susceptibilityISOIL17A (Homo sapiens)4889139; 4889139DNA:SNP:promoter:rs2275913 (human)RGD 
Gram-Negative Bacterial Infections susceptibilityIAGP 4889139Moraxellaceae Infections more ...RGD 
Gram-Negative Bacterial Infections susceptibilityISOIL17A (Homo sapiens)4889139; 4889139Moraxellaceae Infections more ...RGD 
Pneumococcal Infections susceptibilityIAGP 4889139associated with Bronchiolitis and DNA:SNP:promoter:rs2275913 (human)RGD 
Pneumococcal Infections susceptibilityISOIL17A (Homo sapiens)4889139; 4889139associated with Bronchiolitis and DNA:SNP:promoter:rs2275913 (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Il17a  (interleukin 17A)

Genes (Mus musculus)
Il17a  (interleukin 17A)

Genes (Homo sapiens)
IL17A  (interleukin 17A)


Additional Information