Toll‐like receptor (TLR) 2 and 4 mutations in periodontal disease

• Published in: Clinical and experimental immunology Vol. 135; no. 2; pp. 330 - 335
• Main Authors: FOLWACZNY, M., GLAS, J., TÖRÖK, H.‐P., LIMBERSKY, O., FOLWACZNY, C.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Science Ltd 01.02.2004; Blackwell; Oxford University Press; Blackwell Science Inc
• Subjects: Adult; Aged; Alleles; Biological and medical sciences; Chronic Disease; Clinical Studies; Electrophoresis, Agar Gel - methods; Female; Fundamental and applied biological sciences. Psychology; Fundamental immunology; Genotype; Heterozygote; Humans; Immunopathology; lipopolysaccharide; Male; Medical sciences; Membrane Glycoproteins - genetics; Membrane Glycoproteins - immunology; Middle Aged; Mutation; pathogen‐associated molecular patterns (PAMPs); Periodontal Diseases - immunology; periodontitis; Polymerase Chain Reaction - methods; Polymorphism, Restriction Fragment Length; proinflammatory; receptor; Receptors, Cell Surface - genetics; Receptors, Cell Surface - immunology; TLR2; TLR4; Toll-Like Receptor 2; Toll-Like Receptor 4; Toll-Like Receptors; Immunopathology; Periodontal disease; periodontitis TLR2 TLR4 receptor; Immunology; Stomatology; Toll like receptor 2; Periodontopathy; Dentistry; Mutation
• ISSN: 0009-9104; 1365-2249
• DOI: 10.1111/j.1365-2249.2004.02383.x

SUMMARY Toll‐like receptors (TLR) are signal molecules essential for the cellular response to bacterial cell wall components. Different functional effective polymorphisms for the TLR 4 gene (Asp299Gly; Thr399Ile) and for the TLR 2 gene (Arg677Trp, Arg753Gln) have recently been described that are associated with impaired lipopolysaccharide signal transduction. A total of 122 patients with chronic periodontal disease and 122 healthy unrelated controls were genotyped for the Asp299Gly and Thr399Ile polymorphism of the TLR 4 gene and the Arg677Trp and Arg753Gln mutation of the TLR 2 gene. The mutations were identified with polymerase chain reaction followed by restriction fragment length polymorphism (RFLP) analysis. The prevalence of the Asp299Gly and the Thr399Ile mutant allele was 4·1% (10/244) and 4·5% (11/244) among periodontitis patients. For the healthy controls the prevalence was 3·3% (8/244) for the Asp299Gly (P = 0·810) and 3·7% (9/244) for the Thr399Ile mutant allele (P = 0·819). The Arg753Gln mutant allele was found in 2·9% (7/244) of the periodontitis subjects as compared to 4·1% (10/244) in the control group (P = 0·622). The Arg677Trp mutant allele was not found in any of the study subjects. Unlike in ulcerative colitis there was not observed an association between chronic periodontitis and the various mutations of the TLR 2 and 4 gene.