A functional polymorphism of toll-like receptor 4 is not associated with likelihood or severity of meningococcal disease.
نویسندگان
چکیده
Human Toll-like receptor 4 (TLR4) transduces proinflammatory cytokine release by human cells in response to lipopolysaccharide (LPS). This study tested the hypothesis that, if TLR4 is rate limiting for a successful response to bacterial LPS in humans, a human gene polymorphism that results in the amino acid substitution Asp299Gly and causes reduced expression and function of TLR4 should influence susceptibility to or severity of natural gram-negative infection. The allele frequency of the Asp299Gly polymorphism was 5.9% among 879 blood donors, 6.5% among 1047 patients with microbiologically proven meningococcal disease, and 4.1% among 86 patients who died of meningococcal disease. No significant differences were observed, including those analyzed after stratification of the infected population by age and by meningococcal serogroup. Therefore, this functional TLR4 polymorphism does not influence susceptibility to or severity of meningococcal disease.
منابع مشابه
ارتباط پلیمورفیسمهای ژنتیکی پذیرنده شبه Toll 4 (TLR4) و استعداد ابتلا به سل ریوی
Background & Aim: Toll-like receptor 2 (TLR2) and Toll-like receptor 4 (TLR4) are the members of the Toll-like receptor family and play important roles in recognition and subsequent immune response against mycobacteria. Two functional polymorphisms for TLR2 (Arg677Trp, C à T Arg753Gln, G à A) and TLR4 (Asp299Gly, A à G Thr399Ile, C à T) genes have been associated with a negative influence on ...
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ورودعنوان ژورنال:
- The Journal of infectious diseases
دوره 184 5 شماره
صفحات -
تاریخ انتشار 2001