Zhanqin Zhao1,2, Yun Xue1,3, Dun Hong1, Hongjun Zhang4, Zhigang Hu3, Shunwu Fan5, Haixiao Chen1. 1. 1 Department of Orthopedics, Taizhou Hospital of Zhejiang Province , Taizhou, China . 2. 2 College of Animal Science and Technology, Henan University of Science and Technology , Luoyang, China . 3. 3 College of Medical Technology and Engineering, Henan University of Science and Technology , Luoyang, China . 4. 4 Department of Orthopedics, Bone-Setting Hospital of Luoyang , Luoyang, China . 5. 5 Department of Orthopedics, Sir Run Run Shaw Hospital, Zhejiang University , Hangzhou, China .
Abstract
AIMS: Individual sensitivity to glucocorticoid (GC) therapy might play a pivotal role in the development of GC-induced avascular necrosis of the femoral head (GANFH). In a growing number of studies, common polymorphisms of the glucocorticoid receptor gene (nuclear receptor subfamily 3 group C member 1 [NR3C1]) have been associated with variability in the individual sensitivity to GCs. However, whether the NR3C1 gene polymorphisms actually influence the susceptibility of GANFH remains unknown. METHODS: In this study, we report the findings of a case-control study to investigate the role of the NR3C1 gene single-nucleotide polymorphisms (SNPs) in GANFH susceptibility among 78 GANFH patients (GCs sensitive) and 115 GC-resistant controls. RESULTS: Our results found no significant associations between the SNPs N363S, Tth111I, BclI, ER22/23EK, and A3669G with GANFH susceptibility. The G allele frequency, both homozygous and heterozygous, of SNP BclI was significantly different between control and GANFH combined with osteopenia subgroups (odds ratios [OR] = 1.81; 95% confidence intervals [CI] = 1.05-3.10; OR = 2.04; 95% CI = 1.03-4.07, respectively). CONCLUSIONS: Most of these common SNPs in the NR3C1 gene likely do not play critical roles in the susceptibility of GANFH. However, the G allele at the SNP Bcll, irrespective of dosage, may increase risk for the development of GANFH combined with osteopenia in the Chinese population.
AIMS: Individual sensitivity to glucocorticoid (GC) therapy might play a pivotal role in the development of GC-induced avascular necrosis of the femoral head (GANFH). In a growing number of studies, common polymorphisms of the glucocorticoid receptor gene (nuclear receptor subfamily 3 group C member 1 [NR3C1]) have been associated with variability in the individual sensitivity to GCs. However, whether the NR3C1 gene polymorphisms actually influence the susceptibility of GANFH remains unknown. METHODS: In this study, we report the findings of a case-control study to investigate the role of the NR3C1 gene single-nucleotide polymorphisms (SNPs) in GANFH susceptibility among 78 GANFHpatients (GCs sensitive) and 115 GC-resistant controls. RESULTS: Our results found no significant associations between the SNPs N363S, Tth111I, BclI, ER22/23EK, and A3669G with GANFH susceptibility. The G allele frequency, both homozygous and heterozygous, of SNP BclI was significantly different between control and GANFH combined with osteopenia subgroups (odds ratios [OR] = 1.81; 95% confidence intervals [CI] = 1.05-3.10; OR = 2.04; 95% CI = 1.03-4.07, respectively). CONCLUSIONS: Most of these common SNPs in the NR3C1 gene likely do not play critical roles in the susceptibility of GANFH. However, the G allele at the SNP Bcll, irrespective of dosage, may increase risk for the development of GANFH combined with osteopenia in the Chinese population.
Entities:
Keywords:
glucocorticoid-induced avascular osteonecrosis of the femoral head; nuclear receptor subfamily 3 group C member 1; single-nucleotide polymorphisms; susceptibility