Abstract.
Osteoporosis is believed to result from interplay among multiple environmental and genetic determinants, including factors that regulate bone-mineral density (BMD). Recent quantitative trait locus analysis in human suggested a possible involvement of chromosomal region 1p36.2–p36.3 for determination of BMD. The brain natriuretic peptide (BNP, also named NPPB) gene lies within this candidate region for BMD determination. Overexpression of the BNP resulted in skeletal overgrowth in transgenic mice. Association analysis between nucleotide variations of the BNP gene and radial BMD in 378 Japanese postmenopausal women revealed a significant association of the –381T/C variation of the BNP gene with radial BMD (r = 0.17, P = 0.01). Homozygous T-allele carriers had the lowest BMD values (0.395 ± 0.056 g/cm2), homozygous C-allele carriers had the highest (0.429 ± 0.051 g/cm2), and heterozygous individuals had intermediate radial BMD values (0.405 ± 0.048 g/cm2), indicating a dosage effect. Accelerated bone loss also correlated with the –381 T allele in a 5-year follow-up study (r = 0.21, P = 0.017). These results suggest that variation of BNP may be an important determinant of postmenopausal osteoporosis, in part through the mechanism of accelerated postmenopausal bone loss.
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Received: November 8, 2002 / Accepted: November 12, 2002
Acknowledgments This work was supported in part by a special grant for Strategic Advanced Research on “Cancer” and “Genome Science” from the Ministry of Education, Science, Sports and Culture of Japan; by a Research Grant for Research from the Ministry of Health and Welfare of Japan; and by a Research for the Future Program Grant of The Japan Society for the Promotion of Science.
Correspondence to:M. Emi
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Kajita, M., Ezura, Y., Iwasaki, H. et al. Association of the –381T/C promoter variation of the brain natriuretic peptide gene with low bone-mineral density and rapid postmenopausal bone loss. J Hum Genet 48, 77–81 (2003). https://doi.org/10.1007/s100380300010
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DOI: https://doi.org/10.1007/s100380300010
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