Bone mineral density

Screening and functional microarray analysis of differentially expressed genes related to osteoporosis

Y. Chen and Xia, R. G., “Screening and functional microarray analysis of differentially expressed genes related to osteoporosis”, vol. 13, pp. 3228-3236, 2014.

We searched for key genes that could accurately predict bone mineral density. The gene expression profile GSE7429 was downloaded from the Gene Expression Omnibus database, which includes 20 samples, 10 with high and 10 with low bone mineral density. The differentially expressed genes (DEGs) were identified with packages in R language. Further, BLASTX was used to obtain COG function classifications of all the DEGs. The GOTM software was used to find DEGs enriched modules. The functions of genes in the modules was also predicted with the software GENECODIS.

Association of the g.27563G>A osteoprotegerin genetic polymorphism with bone mineral density in Chinese women

Y. P. Liu, Zhao, D. W., Wang, W. M., Wang, B. J., Zhang, Y., and Li, Z. G., “Association of the g.27563G>A osteoprotegerin genetic polymorphism with bone mineral density in Chinese women”, vol. 13, pp. 3560-3566, 2014.

Osteoporosis is a common multifactorial disease in postmenopausal women. This study aimed to investigate the association of the g.27563G>A osteoprotegerin (OPG) genetic polymorphism with bone mineral density (BMD) and osteoporosis. A case-control study was carried out with 435 osteoporosis postmenopausal women cases and 442 age-matched healthy controls. The BMD at the femoral neck hip, lumbar spine (L2-4), and total hip were assessed by Norland XR-46 dual-energy X-ray absorptiometry.

Drynaria total flavonoids decrease cathepsin K expression in ovariectomized rats

X. L. Shi, Li, C. W., Wan, Q. Z., Li, A. Q., Wang, H., and Liu, K., “Drynaria total flavonoids decrease cathepsin K expression in ovariectomized rats”, vol. 13, pp. 4311-4319, 2014.

This study investigated the effects of Drynaria total flavonoids on cathepsin K serum concentrations and gene expression, biomechanics and bone mineral density (BMD) of the tibial shaft in ovariectomized rat models of osteoporosis, and mechanism in the prevention and cure of osteoporosis. Seventy-two female Sprague-Dawley rats were divided into six groups. The rats in each group were subjected to gastric lavage after the model was established. The tibial shaft of the right hindlimb was obtained to measure the BMD. Serum cathepsin K concentrations were determined.

Association of the g.19074G>A genetic variant in the osteoprotegerin gene with bone mineral density in Chinese postmenopausal women

Y. D. Zhang, Zhang, Z., Zhou, N. F., Jia, W. T., Cheng, X. G., and Wei, X. J., “Association of the g.19074G>A genetic variant in the osteoprotegerin gene with bone mineral density in Chinese postmenopausal women”, vol. 13, pp. 6646-6652, 2014.

Primary osteoporosis is a common health problem in postmenopausal women. This study aimed to detect the association of the g.19074G>A genetic variant in the osteoprotegerin gene (OPG) with bone mineral density (BMD) and primary osteoporosis. The created restriction site-polymerase chain reaction method was used to investigate the g.19074G>A genetic variant. The BMD of the femoral neck hip, lumbar spine (L2-4), and total hip were assessed by dual-energy X-ray absorptiometry (DEXA) in 856 unrelated Chinese postmenopausal women.

Association analysis between the OPG g.27667T>A genetic variant and bone mineral density in Chinese postmenopausal women

J. J. Zhao, Feng, D. H., Cheng, L., Lu, T., and Wang, L., “Association analysis between the OPG g.27667T>A genetic variant and bone mineral density in Chinese postmenopausal women”, vol. 13, pp. 7332-7338, 2014.

The purpose of this study was to investigate the association of the g.27667T>A genetic variant in the osteoprotegerin (OPG) gene with bone mineral density (BMD) and osteoporosis. A total of 393 primary osteoporosis subjects and 402 healthy controls were recruited. The BMD of the femoral neck hip, lumbar spine (L2-4), and total hip were evaluated by Norland XR-46 dual-energy X-ray absorptiometry. The g.27667T>A genetic variant was genotyped using created restriction site-polymerase chain reaction.

Association of vitamin D receptor BsmI gene polymorphism with risk of low bone mineral density in post-menopausal women: a meta-analysis

C. Ma, Zhou, Q. L., Deng, Y. J., Liang, X., Wu, D. P., and Dong, Y. Z., “Association of vitamin D receptor BsmI gene polymorphism with risk of low bone mineral density in post-menopausal women: a meta-analysis”, vol. 13, pp. 7791-7799, 2014.

The vitamin D receptor BsmI gene polymorphism is reportedly associated with low bone mineral density (BMD) in postmenopausal women, but results from previous studies are conflicting. In the present study, we investigated the association between this polymorphism and the risk of low BMD through a meta-analysis of published studies. A literature search of the Pubmed, Embase, and CNKI databases from inception through July 2013 was conducted. The meta-analysis was performed using the STATA 12.0 software.

Association of T869C gene polymorphism of transforming growth factor-β1 with low protein levels and anthropometric indices in osteopenia/osteoporosis postmenopausal Thai women

D. Utennam, Tungtrongchitr, A., Phonrat, B., Tungtrongchitr, R., and Preutthipan, S., “Association of T869C gene polymorphism of transforming growth factor-β1 with low protein levels and anthropometric indices in osteopenia/osteoporosis postmenopausal Thai women”, vol. 11, pp. 87-99, 2012.

Osteoporosis is the most common metabolic bone disease; it is an important health problem among postmenopausal women. We evaluated the association of three polymorphisms, T869C, C-509T and G915C, of the TGF-β1 gene with bone mineral density (BMD) serum TGF-β1 levels in 278 postmenopausal female osteopenia/osteoporosis subjects and 95 postmenopausal female control subjects. Serum TGF-β1 levels were significantly lower in osteopenia/osteoporosis subjects than in control subjects.

Association analysis of vitamin D receptor gene polymorphisms and bone mineral density in postmenopausal Mexican-Mestizo women

A. González-Mercado, Sánchez-López, J. Y., Regla-Nava, J. A., Gámez-Nava, J. I., González-López, L., Duran-Gonzalez, J., Celis, A., Perea-Díaz, F. J., Salazar-Páramo, M., and Ibarra, B., “Association analysis of vitamin D receptor gene polymorphisms and bone mineral density in postmenopausal Mexican-Mestizo women”, vol. 12, pp. 2755-2763, 2013.

We investigated associations between vitamin D receptor (VDR) gene polymorphisms, FokI T>C (rs2228570), BsmI G>A (rs1544410), ApaI G>T (rs7975232), and TaqI T>C (rs731236), with bone mineral density (BMD) in postmenopausal Mexican-Mestizo women. Three hundred and twenty postmenopausal women participated, who were classified according to World Health Organization criteria as non-osteoporotic (Non-OP; N = 88), osteopenic (Opn; N = 144), and osteoporotic (OP; N = 88).

Association between single nucleotide polymorphisms of the osteoprotegerin gene and postmenopausal osteoporosis in Chinese women

J. F. Song, Jing, Z. Z., Hu, W., and Su, Y. X., “Association between single nucleotide polymorphisms of the osteoprotegerin gene and postmenopausal osteoporosis in Chinese women”, vol. 12, pp. 3279-3285, 2013.

Osteoporosis is an important and common complex health problem, particularly in postmenopausal women. It is characterized by a reduction in bone mineral density (BMD) and a deterioration of bone microarchitecture with a consequent increase of fracture risk. The osteoprotegerin (OPG) gene is considered to play an important role in the pathogenesis of osteoporosis. We analyzed SNPs of the OPG gene and associations between these polymorphisms and BMD in 399 Chinese postmenopausal women.

Lack of effect of bone morphogenetic protein 2 and 4 gene polymorphisms on bone density in postmenopausal Turkish women

Z. S. Özkan, Deveci, D., E. Önalan, E., and Yüce, H., “Lack of effect of bone morphogenetic protein 2 and 4 gene polymorphisms on bone density in postmenopausal Turkish women”, vol. 9, pp. 2311-2316, 2010.

We investigated the effect of bone morphogenetic protein 2 and 4 (BMP-2 and -4) gene polymorphisms on bone density in postmenopausal Turkish women with osteoporosis. The frequency of single-nucleotide polymorphisms (SNPs) of BMP-2 and -4 genes was analyzed in 101 osteoporotic-postmenopausal women and 52 postmenopausal women with positive bone mineral density scores. We evaluated the frequency of the thymine→cytosine nucleotide variation at position 538 for BMP-4 and the transposition of adenine→thymine at codon 190 for BMP-2, with PCR.

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