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Association of the C–509→T polymorphism, alone or in combination with the T869→C polymorphism, of the transforming growth factor-β1 gene with bone mineral density and genetic susceptibility to osteoporosis in Japanese women

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Abstract

Transforming growth factor-β1 is an important local regulator of bone metabolism, acting downstream of estrogen and cooperatively with vitamin D. The possible association of a C–509→T polymorphism in the promoter region of the transforming growth factor-β1 gene, alone or in combination with a T869→C (Leu10→Pro) polymorphism, with bone mineral density and genetic susceptibility to osteoporosis was investigated in 625 postmenopausal Japanese women. The frequencies of the CC, CT, and TT genotypes of the C–509→T polymorphism in the study population were 24%, 49%, and 27%, respectively. A significant association of C–509→T genotype with bone mineral density was detected: lumbar spine (L2–L4) and total body bone mineral density values were 7% and 5% lower, respectively, in individuals with the TT genotype than in those with the CT or CC genotype. The serum concentration of transforming growth factor-β1 did not vary with C–509→T genotype. Multivariable logistic regression analysis, with adjustment for age, height, body weight, time since menopause, smoking status, body fat mass, and lean mass, revealed a significantly higher frequency of the TT genotype of the C–509→T polymorphism in 286 individuals with osteoporosis than in 170 normal controls. Analysis of combined C–509→T and T869→C genotypes showed that L2–L4 bone mineral density decreases and the prevalence of osteoporosis increases with the number of T alleles. These results suggest that the C–509→T polymorphism, alone or in combination with the T869→C polymorphism, of the transforming growth factor-β1 gene is a genetic determinant of bone mass, and that the number of T alleles in the combined genotype is a risk factor for the genetic susceptibility to osteoporosis in postmenopausal Japanese women.

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Yamada, Y., Miyauchi, A., Takagi, Y. et al. Association of the C–509→T polymorphism, alone or in combination with the T869→C polymorphism, of the transforming growth factor-β1 gene with bone mineral density and genetic susceptibility to osteoporosis in Japanese women. J Mol Med 79, 149–156 (2001). https://doi.org/10.1007/s001090100190

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  • DOI: https://doi.org/10.1007/s001090100190

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