RGD Reference Report - Asp299Gly and Thr399Ile genotypes of the TLR4 gene are associated with a reduced prevalence of diabetic neuropathy in patients with type 2 diabetes. - Rat Genome Database

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Asp299Gly and Thr399Ile genotypes of the TLR4 gene are associated with a reduced prevalence of diabetic neuropathy in patients with type 2 diabetes.

Authors: Rudofsky G, JR  Reismann, P  Witte, S  Humpert, PM  Isermann, B  Chavakis, T  Tafel, J  Nosikov, VV  Hamann, A  Nawroth, P  Bierhaus, A 
Citation: Rudofsky G Jr, etal., Diabetes Care. 2004 Jan;27(1):179-83.
RGD ID: 2312493
Pubmed: PMID:14693986   (View Abstract at PubMed)

OBJECTIVE: To establish whether single nucleotide polymorphisms (Asp299Gly and Thr399Ile) of the toll-like receptor 4 have an association with late diabetic complications. RESEARCH DESIGN AND METHODS: The study was conducted in 246 type 1 and 530 type 2 diabetic patients. The alleles of both polymorphisms were detected using PCR and subsequent cleavage by NcoI and HinfI restriction endonucleases. RESULTS: No difference was found between type 1 and type 2 diabetic patients in the prevalence of alleles of the Asp299Gly and Thr399Ile polymorphisms. In most cases, the alleles Gly299 and Ile399 occurred in a co-segregatory manner. The prevalence of the Gly299/Ile399 haplotype was 10.6 and 12.1% in type 1 and type 2 diabetic patients, respectively (P = 0.63). No association with diabetic nephropathy or diabetic neuropathy was found in type 1 diabetic patients. In type 2 diabetic patients, however, heterozygote carriers of the Asp299Gly and Thr399Ile genotypes had a significantly reduced prevalence of diabetic neuropathy (odds ratio 0.35 [95% CI 0.19-0.61]; P = 0.0002); no association with diabetic nephropathy was found. CONCLUSIONS: Our data indicate that Asp299Gly and Thr399Ile genotypes of the TLR4 gene are associated with reduced prevalence of diabetic neuropathy in type 2, but not in type 1, diabetes. Thus different mechanisms may be involved in the pathophysiology of diabetic neuropathy in type 1 and type 2 diabetes.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
diabetic neuropathy susceptibilityIAGP 2312493associated with Diabetes Mellitus more ...RGD 
diabetic neuropathy susceptibilityISOTLR4 (Homo sapiens)2312493; 2312493associated with Diabetes Mellitus more ...RGD 

Objects Annotated

Genes (Rattus norvegicus)
Tlr4  (toll-like receptor 4)

Genes (Mus musculus)
Tlr4  (toll-like receptor 4)

Genes (Homo sapiens)
TLR4  (toll like receptor 4)


Additional Information