The Pediatric infectious disease journal · 2007
Age-dependent association of human mannose-binding lectin mutations with susceptibility to invasive meningococcal disease in childhood.
СтатьяМногоцентровое исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Faber Joerg, Schuessler Therese, Finn Adam, Murdoch Craig, Zenz Werner, Habermehl Pirmin, Meyer Claudius U, Zabel Bernhard U, Schmitt Heinz, Zepp Fred, Knuf Markus
Аннотация
BACKGROUND: Mannose-binding lectin (MBL) is an important factor of the innate immune system, and MBL-initiated complement activation is an important early defense mechanism against various bacterial infections, including invasive meningococcal disease.
METHODS: In a pediatric cohort (ages 2-215 months) with invasive meningococcal disease, we investigated the overall and age-stratified frequency of 3 MBL exon 1 variations (C154T, G161A, G170A), previously shown to result in markedly decreased MBL plasma concentrations, by allele specific fluorescent hybridization probe real-time PCR assays and direct sequencing. Healthy age-matched volunteers with the same ethnic background and no history of meningococcal disease served as a control group.
RESULTS: The overall frequency of a MBL exon 1 variant genotype was significantly higher in patients than in controls (31.8% vs. 8.2%, P < 0.001). In the patient group with disease onset less than 24 months of age, the prevalence of MBL structural variant genotype was further increased (39.3%; P < 0.001) and most pronounced in children with disease onset less than 12 months of age (57.1%; P < 0.001) when compared with healthy controls. Analysis of clinical severity and outcome revealed no significant difference between patients with wild-type and mutant alleles.
CONCLUSIONS: Our data suggest that MBL exon 1 structural variants are significantly associated with susceptibility to childhood meningococcal disease in an age-dependent manner.
METHODS: In a pediatric cohort (ages 2-215 months) with invasive meningococcal disease, we investigated the overall and age-stratified frequency of 3 MBL exon 1 variations (C154T, G161A, G170A), previously shown to result in markedly decreased MBL plasma concentrations, by allele specific fluorescent hybridization probe real-time PCR assays and direct sequencing. Healthy age-matched volunteers with the same ethnic background and no history of meningococcal disease served as a control group.
RESULTS: The overall frequency of a MBL exon 1 variant genotype was significantly higher in patients than in controls (31.8% vs. 8.2%, P < 0.001). In the patient group with disease onset less than 24 months of age, the prevalence of MBL structural variant genotype was further increased (39.3%; P < 0.001) and most pronounced in children with disease onset less than 12 months of age (57.1%; P < 0.001) when compared with healthy controls. Analysis of clinical severity and outcome revealed no significant difference between patients with wild-type and mutant alleles.
CONCLUSIONS: Our data suggest that MBL exon 1 structural variants are significantly associated with susceptibility to childhood meningococcal disease in an age-dependent manner.