نوع مقاله : مقاله های پژوهشی
نویسندگان
1 کارشناس ارشد، گروه زیستشناسی، دانشکدهی علوم، دانشگاه اصفهان، اصفهان، ایران
2 استاد، گروه زیستشناسی، دانشکدهی علوم، دانشگاه اصفهان، اصفهان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Background: Crigler-Najjar syndrome is a rare, autosomal recessive disorder characterized by unconjugated, non-hemolytic hyperbilirubinemia. The disease is caused by mutations in the UGT1A1 gene, which result in the decrease or lack of the UGT1A1 enzyme activity and thus, lack of bilirubin conjugation with glucuronic acid. Molecular diagnosis of the syndrome has been essentially based on direct mutation analysis. However, due to a large number of mutations associated with the disease, direct mutation analysis is expensive and time consuming. Alternatively, indirect analysis of mutations using linkage analysis by means of polymorphic markers is proposed. Several polymorphic markers associated with the UGT1A1 gene have been studied.Methods: Using bioinformatic analysis of these markers, the single nucleotide polymorphism (SNP) rs4148326 with the C/T sequence, located at 5' region of the gene was selected. Analysis of the marker was performed by genotyping of 186 unrelated healthy individuals in the Isfahanian population, Iran, using tetra-primer amplification refractory mutation system polymerase chain reaction (Tetra-Primer ARMS PCR) technique. Statistical analysis of the results was performed using the GENEPOP software.Findings: The heterozygosity of rs4148326 the marker was 62.9% and the allele frequency for T and C allele was 66.94% and 33.06%, respectively. Analysis of deviations from Hardy-Weinberg equilibrium demonstrated that the Isfahanian population was in equilibrium (P < 0.001) for rs4148326 locus.Conclusion: The data suggested that rs4148326 could be introduced as an informative marker for molecular diagnosis of Crigler-Najjar syndrome in a representative sample of the Iranian population.
کلیدواژهها [English]