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Tag SNP polymorphism of CCL2 and its role in clinical tuberculosis in Han Chinese pediatric population
- Source :
- PLoS ONE, PLoS ONE, Vol 6, Iss 2, p e14652 (2011)
- Publication Year :
- 2010
-
Abstract
- BACKGROUND: Chemokine (C-C motif) ligand 2 CCL2/MCP-1 is among the key signaling molecules of innate immunity; in particular, it is involved in recruitment of mononuclear and other cells in response to infection, including tuberculosis (TB) and is essential for granuloma formation. METHODOLOGY/PRINCIPAL FINDINGS: We identified a tag SNP for the CCL2/MCP-1 gene (rs4586 C/T). In order to understand whether this SNP may serve to evaluate the contribution of the CCL2 gene to the expression of TB disease, we further analysed distribution of its alleles and genotypes in 301 TB cases versus 338 non-infected controls (all BCG vaccinated) representing a high-risk pediatric population of North China. In the male TB subgroup, the C allele was identified in a higher rate (P = 0.045), and, acting dominantly, was found to be a risk factor for clinical TB (P = 0.029). Homozygous TT genotype was significantly associated with lower CSF mononuclear leukocyte (ML) counts in patients with tuberculous meningitis (TBM) (P = 0.001). CONCLUSIONS/SIGNIFICANCE: The present study found an association of the CCL2 tag SNP rs4586 C allele and pediatric TB disease in males, suggesting that gender may affect the susceptibility to TB even in children. The association of homozygous TT genotype with decreased CSF mononuclear leukocyte (ML) count not only suggests a clinical significance of this SNP, but indicates its potential to assist in the clinical assessment of suspected TBM, where delay is critical and diagnosis is difficult.
- Subjects :
- Male
China
Tuberculosis
Adolescent
MEDLINE
Ethnic group
lcsh:Medicine
Library science
ComputingMilieux_LEGALASPECTSOFCOMPUTING
Commission
Polymorphism, Single Nucleotide
Linkage Disequilibrium
Beijing
Asian People
medicine
Ethnicity
Humans
lcsh:Science
Child
Tuberculosis, Pulmonary
Chemokine CCL2
Genetics and Genomics/Genetics of Disease
Genetics
Sex Characteristics
Multidisciplinary
business.industry
Infectious Diseases/Respiratory Infections
lcsh:R
Tag SNP
medicine.disease
Phenotype
Haplotypes
Case-Control Studies
Child, Preschool
Tuberculosis, Meningeal
Immunology/Immune Response
lcsh:Q
Female
Genetics and Genomics/Genetics of the Immune System
business
Sentence
Research Article
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 6
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- PloS one
- Accession number :
- edsair.doi.dedup.....ff1d6723de9c02756439b2c7296fa010