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- Title
Association of estrogen receptor alpha gene polymorphisms and lifestyle factors with calcaneal quantitative ultrasound and osteoporosis in postmenopausal Vietnamese women.
- Authors
Tran Binh; Shinka, Toshikatsu; Nguyen Khan; Vu Thi Thu Hien; Nguyen Thi Lam; Le Bach Mai; Nakano, Takuro; Sei, Masako; Yamamoto, Shigeru; Nakamori, Masayo; Nakahori, Yutaka
- Abstract
Genetic and lifestyle factors are important in the pathogenesis of osteoporosis. We investigated the relationships of PvuII and XbaI polymorphisms of the estrogen receptor alpha (ER-α) gene, lifestyle factors with speed of sound at the calcaneus (calcaneal SOS) and osteoporosis in a population-based study of 140 healthy postmenopausal women. By an analysis of covariates, women with higher copies of P or X alleles had higher calcaneal SOS compared with others ( P=0.012, PP vs. pp; P=0.045, Xx vs. xx). Women with lower copies of px or higher copies of PX haplotypes had higher calcaneal SOS compared with others ( P=0.021, 0 px vs. 2 px; P=0.011, 1 PX vs. 0 PX). The px and PX haplotypes, age and years since menopause were found to be independent predictors of calcaneal SOS in multiple linear regression models. Using logistic regression, we found an increased osteoporosis risk with evidence for a px haplotype dose effect (OR=2.82, 95% CI=1.50–5.31, P=0.001) and for a PX haplotype dose effect (OR=0.42, 95% CI=0.19−0.93, P=0.033). An increased educational level was associated with a reduced risk of osteoporosis ( P=0.035 in the model with px, P=0.044 in the model with PX). In conclusion, the present study suggests that PvuII and XbaI polymorphims of the ER-α gene, age, years since menopause and educational level are associated with bone density, as assessed by calcaneal SOS, and osteoporosis in postmenopausal Vietnamese women.
- Subjects
SELECTIVE estrogen receptor modulators; MEDICAL imaging systems; OSTEOPOROSIS in women; GENETIC polymorphisms; LIFESTYLES; STEROID hormones; VIETNAMESE people
- Publication
Journal of Human Genetics, 2006, Vol 51, Issue 11, p1022
- ISSN
1434-5161
- Publication type
Academic Journal
- DOI
10.1007/s10038-006-0055-8