Osteoporosis.
2011 Aug;9(2):151-160.
The Association of Polymorphisms of Secreted Frizzled Related Protein Genes with Circulating Osteoprotegerin (OPG): Soluble Receptor Activator of NF-kB Ligand (sRANKL) and Bone Mineral Density
- Affiliations
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- 1Department of Obstetrics and Gynecology, Incheon Medical Center, Incheon, Korea.
- 2Center for Uterine Cancer, National Cancer Center, Ilsan, Korea.
- 3Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea. kimjg@snu.ac.kr
- 4Clinical Research Institute, Seoul National University Hospital, Seoul, Korea.
Abstract
OBJECTIVES
To investigate the relationship between polymorphisms of secreted frizzled related protein (sFRP) genes, circulating osteoprotegerin (OPG), and soluble receptor activator of NF-kB ligand (sRANKL), and bone mineral density (BMD) in postmenopausal Korean women.
METHODS
The sFRP1 c.3132C>T, rs16890444, sFRP2 c.-38C>G, and sFRP5 c.20G>C, and c.34A>T polymorphisms were analyzed by Taqman assay and dierect DNA sequencing in 170 postmenopausal Korean women. Serum CrossLaps (CTX), bone alkaline phosphatase (BAP), OPG, and sRANKL were measured by enzyme linked immunosorbent assay. The BMD at the lumbar spine and femoral neck was determined by dual energy X-ray absorptiometry.
RESULTS
The sFRP2 c.-38C>G, and sFRP5 c.34A>T polymorphisms were not observed. No significant differences in adjusted BMD of lumbar spine and femoral neck and in risk for osteoporosis were noted among single genotypes of the sFRP genes polymorphisms measured or haplotype genotypes composed of the sFRP1 c.3132C>T and rs16890444 polymorphisms. No statistical significances in serum levels of bone chemical markers except BAP were observed according to single or haplotype genotypes. Serum BAP was significantly higher in women with the GG genotype than those in women with the GC genotype of the sFRP5 c.20G>C polymorphism.
CONCLUSIONS
The sFRP1 c.3132C>T, rs16890444 and sFRP5 c.20G>C polymorphisms do not affect BMD at the lumbar spine and femoral neck in postmenopausal Korean women.
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