PMID- 20697762 OWN - NLM STAT- MEDLINE DCOM- 20110104 LR - 20211020 IS - 1434-9949 (Electronic) IS - 0770-3198 (Linking) VI - 29 IP - 11 DP - 2010 Nov TI - Evaluation of the effects of vitamin D receptor and estrogen receptor 1 gene polymorphisms on bone mineral density in postmenopausal women. PG - 1285-93 LID - 10.1007/s10067-010-1548-6 [doi] AB - The aim of this study is to evaluate the effects of estrogen receptor 1 (ESR1) and vitamin D receptor (VDR) gene polymorphisms on bone mineral density (BMD) in a group of previously untreated osteoporotic women. Effects of demographic, environmental, and hormonal factors were also evaluated in this context. Fifty women who did not have a prior diagnosis or treatment of osteoporosis were compared with 50 nonosteoporotic postmenopausal women. Demographic and morphometric characteristics, medical history, dietary habits, exercise history, and sunlight exposure were recorded. The diagnosis of osteoporosis was made with regard to BMD measurements with DEXA. Blood samples were obtained for serum biochemistry, bone turnover markers, and VDR and ESR1 gene polymorphism analysis. Polymorphic sites of VDR and ESR1 genes were amplified by polymerase chain reaction and examined using restriction fragment length polymorphism. Bb genotype was significantly higher in the osteoporotic group when compared to controls (p=0.022). Each 1 U decrease in the body mass index (BMI) increased the risk of osteoporosis by 8% independent of the genotype. We could not observe a significant effect of ESR1 polymorphism on BMD or osteoporosis risk. The interaction of ApaI and BsmI genotypes were found to be significant (p=0.041) and the AaBb genotype, when corrected for BMI, was shown to increase the risk of osteoporosis five times (p=0.005). However, the results demonstrated insignificant p values when correction for multiple testing was performed with the Bonferroni method in the logistic regression model. A predominance of Bb genotype of the VDR gene was evident in this group of postmenopausal Turkish women. Moreover, the combined genotype AaBb conferred a five times increased risk for osteoporosis when corrected for clinical variables. FAU - Durusu Tanriover, Mine AU - Durusu Tanriover M AD - Department of Internal Medicine, Section of General Internal Medicine, Hacettepe University Faculty of Medicine, and Department of Orthopedics and Traumatology, Gazi Mustafa Kemal Public Hospital, 06100, Sihhiye, Ankara, Turkey. mdurusu@hacettepe.edu.tr FAU - Bora Tatar, Gamze AU - Bora Tatar G FAU - Uluturk, Tenzile Deniz AU - Uluturk TD FAU - Dayangac Erden, Didem AU - Dayangac Erden D FAU - Tanriover, Altug AU - Tanriover A FAU - Kilicarslan, Alpaslan AU - Kilicarslan A FAU - Oz, S Gul AU - Oz SG FAU - Erdem Yurter, Hayat AU - Erdem Yurter H FAU - Sozen, Tumay AU - Sozen T FAU - Sain Guven, Gulay AU - Sain Guven G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100810 PL - Germany TA - Clin Rheumatol JT - Clinical rheumatology JID - 8211469 RN - 0 (Estrogen Receptor alpha) RN - 0 (Receptors, Calcitriol) SB - IM MH - Aged MH - Alleles MH - Body Mass Index MH - Bone Density MH - Estrogen Receptor alpha/*genetics MH - Female MH - *Genetic Predisposition to Disease MH - Genotype MH - Humans MH - Middle Aged MH - Osteoporosis, Postmenopausal/diagnosis/*genetics MH - *Polymorphism, Genetic MH - Postmenopause MH - Receptors, Calcitriol/*genetics MH - Risk EDAT- 2010/08/11 06:00 MHDA- 2011/01/05 06:00 CRDT- 2010/08/11 06:00 PHST- 2010/03/23 00:00 [received] PHST- 2010/07/26 00:00 [accepted] PHST- 2010/07/22 00:00 [revised] PHST- 2010/08/11 06:00 [entrez] PHST- 2010/08/11 06:00 [pubmed] PHST- 2011/01/05 06:00 [medline] AID - 10.1007/s10067-010-1548-6 [doi] PST - ppublish SO - Clin Rheumatol. 2010 Nov;29(11):1285-93. doi: 10.1007/s10067-010-1548-6. Epub 2010 Aug 10.