AIM: To investigate the possible association of Q89R, N740N and A1330V polymorphisms in low-density lipoprotein receptor-related protein 5 (LRP5) gene with bone mineral density (BMD) in postmenopausal Chinese women. METHODS: Q89R, N740N and A1330V genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 647 unrelated healthy postmenopausal Han Chinese women aged 43-76 years in Shanghai. BMD at lumbar spine 1-4 and the left proximal femur including the femoral neck, trochanter and Ward's triangle were measured by dual-energy X-ray absorptionmetry in all subjects. RESULTS: The distribution of the Q89R, N740N and A1330V genotypes in this population was as follows: QQ 80.5%, QR 18.7%, and RR 0.8%; TT 66.9%, TC 31.1%, and CC 2.0%; AA 68.0%, AV 29.7%, and VV 2.3%. The frequencies of the Q89R, N740N and A1330V genotypes and alleles did not deviate from the Hardy-Weinberg equilibrium. We found that the Q89R and A1330V polymorphisms were in linkage disequilibrium in our population (kappa2=13.50, P<0.01). Both before and after adjusting for age, years since menopause, height, and weight, the Q89R or N740N genotypes were significantly associated with BMD at the femoral neck (P<0.05). Subjects with the Q89R QQ genotype or the N740N TT genotype had a significantly higher BMD at the femoral neck, compared with those with the QR/RR or TC/CC genotypes, respectively. No significant association was found between A1330V polymorphism and BMD at any site. CONCLUSION: Our findings suggest that the LRP5 gene is a candidate for the genetic determination of BMD in postmenopausal Chinese women.
AIM: To investigate the possible association of Q89R, N740N and A1330V polymorphisms in low-density lipoprotein receptor-related protein 5 (LRP5) gene with bone mineral density (BMD) in postmenopausal Chinese women. METHODS:Q89R, N740N and A1330V genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 647 unrelated healthy postmenopausal Han Chinese women aged 43-76 years in Shanghai. BMD at lumbar spine 1-4 and the left proximal femur including the femoral neck, trochanter and Ward's triangle were measured by dual-energy X-ray absorptionmetry in all subjects. RESULTS: The distribution of the Q89R, N740N and A1330V genotypes in this population was as follows: QQ 80.5%, QR 18.7%, and RR 0.8%; TT 66.9%, TC 31.1%, and CC 2.0%; AA 68.0%, AV 29.7%, and VV 2.3%. The frequencies of the Q89R, N740N and A1330V genotypes and alleles did not deviate from the Hardy-Weinberg equilibrium. We found that the Q89R and A1330V polymorphisms were in linkage disequilibrium in our population (kappa2=13.50, P<0.01). Both before and after adjusting for age, years since menopause, height, and weight, the Q89R or N740N genotypes were significantly associated with BMD at the femoral neck (P<0.05). Subjects with the Q89RQQ genotype or the N740N TT genotype had a significantly higher BMD at the femoral neck, compared with those with the QR/RR or TC/CC genotypes, respectively. No significant association was found between A1330V polymorphism and BMD at any site. CONCLUSION: Our findings suggest that the LRP5 gene is a candidate for the genetic determination of BMD in postmenopausal Chinese women.
Authors: Joyce B J van Meurs; Thomas A Trikalinos; Stuart H Ralston; Susana Balcells; Maria Luisa Brandi; Kim Brixen; Douglas P Kiel; Bente L Langdahl; Paul Lips; Osten Ljunggren; Roman Lorenc; Barbara Obermayer-Pietsch; Claes Ohlsson; Ulrika Pettersson; David M Reid; Francois Rousseau; Serena Scollen; Wim Van Hul; Lidia Agueda; Kristina Akesson; Lidia I Benevolenskaya; Serge L Ferrari; Göran Hallmans; Albert Hofman; Lise Bjerre Husted; Marcin Kruk; Stephen Kaptoge; David Karasik; Magnus K Karlsson; Mattias Lorentzon; Laura Masi; Fiona E A McGuigan; Dan Mellström; Leif Mosekilde; Xavier Nogues; Huibert A P Pols; Jonathan Reeve; Wilfried Renner; Fernando Rivadeneira; Natasja M van Schoor; Kurt Weber; John P A Ioannidis; André G Uitterlinden Journal: JAMA Date: 2008-03-19 Impact factor: 56.272
Authors: Alison F Doubleday; Frederika A Kaestle; Laura A Cox; Shifra Birnbaum; Michael C Mahaney; Lorena M Havill Journal: J Med Primatol Date: 2009-04 Impact factor: 0.667