Genetic variations of the NR3C1 gene in children with sporadic nephrotic syndrome.

Abstract

Previous studies have demonstrated that the genetic variations of glucocorticoid receptor gene (NR3C1) are associated with both familial steroid resistance and acquired steroid resistance in some diseases, such as Cushing's disease, leukemia, lupus nephritis, and female pseudohermaphroditism. In this study, we examined the genetic variations of NR3C1 in 35 children with sporadic steroid-resistant nephrotic syndrome (SRNS), and in 83 cases with sporadic steroid-sensitive NS (SSNS) using polymerase chain reaction, denaturing high-performance liquid chromatography and DNA sequencing, and analyzed possible associations between NR3C1 variants and steroid resistance in sporadic NS. No causative mutations were found; however, six previously identified and six novel polymorphisms, 1206C > T, 1374A > G, 2382C > T, 2193T > G, IVS7-68_-63delAAAAAA, and IVS8-9C > G, were detected. Two novel haplotypes, [1374A > G; IVS7-68_-63delAAAAAA; IVS8-9C > G; 2382C > T] and [1896C > T; 2166C > T; 2430T > C], of NR3C1 were also identified in sporadic NS and controls. The odds ratios (95% Confidence Interval) for the two novel NR3C1 haplotypes in the sporadic nephrotic children at risk of steroid resistance were 4.970 (0.889-27.788) and 2.194 (0.764-6.306), respectively, but the association between NR3C1 haplotypes and steroid resistance was not significant. Further studies on the possible association between the two novel NR3C1 haplotypes and steroid resistance in sporadic NS in larger cohorts are required.

• Authors: Jianwei Ye, Zihua Yu, Jie Ding, Yan Chen, Jianping Huang, Yong Yao, Huijie Xiao, Jiyun Yang, Ying Shen, Qun Meng
• Journal: Biochemical and biophysical research communications (Biochem Biophys Res Commun) Vol. 348 Issue 2 Pg. 507-13 (Sep 22 2006) ISSN: 0006-291X [Print] United States
• PMID: 16890204 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• NR3C1 protein, human
• Receptors, Glucocorticoid
• Steroids

Topics

• Adolescent
• Base Sequence
• Child
• Child, Preschool
• Chromatography, High Pressure Liquid
• Drug Resistance
• Female
• Gene Frequency
• Genetic Variation
• Haplotypes (genetics)
• Humans
• Infant
• Male
• Nephrotic Syndrome (genetics)
• Polymerase Chain Reaction
• Polymorphism, Genetic
• Protein Denaturation
• Receptors, Glucocorticoid (genetics)
• Steroids (therapeutic use)