title: Association of the -381T/C promoter variation of the brain natriuretic peptide gene with low bone-mineral density and rapid postmenopausal bone loss.
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/cm(2)), homozygous C-allele carriers had the highest (0.429 +/- 0.051 g/cm(2)), and heterozygous individuals had intermediate radial BMD values (0.405 +/- 0.048 g/cm(2)), 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.
authors.affiliation: Department of Molecular Biology, Institute of Gerontology, Nippon Medical School, 1-396 Kosugi-cho, Nakahara-ku, Kawasaki 211-8533, Japan.
authors.forename: Mitsuko
authors.initials: M
authors.lastname: Kajita
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Ezura
authors.forename: Hironori
authors.initials: H
authors.lastname: Iwasaki
authors.forename: Ryota
authors.initials: R
authors.lastname: Ishida
authors.forename: Hideyo
authors.initials: H
authors.lastname: Yoshida
authors.forename: Mina
authors.initials: M
authors.lastname: Kodaira
authors.forename: Takao
authors.initials: T
authors.lastname: Suzuki
authors.forename: Takayuki
authors.initials: T
authors.lastname: Hosoi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Inoue
authors.forename: Masataka
authors.initials: M
authors.lastname: Shiraki
authors.forename: Hajime
authors.initials: H
authors.lastname: Orimo
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Emi
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D015519:Bone Density / Q000235:genetics*; D002878:Chromosomes, Human, Pair 1; D005260:Female; D014644:Genetic Variation; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007564:Japan; D008137:Longitudinal Studies; D008875:Middle Aged; D020097:Natriuretic Peptide, Brain / Q000235:genetics*; D015663:Osteoporosis, Postmenopausal / Q000235:genetics*; D011401:Promoter Regions, Genetic; D040641:Quantitative Trait Loci; D011884:Radius / Q000737:chemistry
chemical_list: D020097:Natriuretic Peptide, Brain