Abstract:
:In 50 premenarcheal girls selected from the lowest and highest end of the calcium-intake distribution of a large population sample, we evaluated bone mineral density (BMD), together with the following hormonal-metabolic parameters: androstenedione (ASD), dehydroepiandrosterone (DHEA), dehydroepiandrosterone sulfate (DHEAS), testosterone (T), estradiol (E2), the apparent free fractions of T (AFTC) and E2 (AFEC), osteocalcin (OC), parathyroid hormone (PTH), and 25-hydroxyvitamin D. Dietary calcium was assessed by 3-day food records, and BMD was measured at ultradistal (ud) and proximal (pr) radial sites, using dual-energy X-ray absorptiometry. Calcium intake, which was below the recommended levels set for the Italian population and below the recommended daily allowance (RDA) in both subgroups of girls, did not show any apparent relationship with ud- and pr- BMD. However, despite the similar chronological age of the two premenarcheal groups, in the low-calcium consumers, we found lower bone age, delayed pubertal development, and lower circulating adrenal androgens. Of interest, in girls who had a low calcium intake, PTH levels were significantly higher. In all premenarcheals, we observed that DHEA, T, and AFTC were positively correlated with bone age and with bone density at both radial sites. Even though bone density at the two radial sites did not show any apparent relationship to calcium consumption, the increased mean PTH in the girls with low calcium intake seems to underscore the hormonal attempt in maintaining calcium homeostasis. In conclusion, low calcium intake and reduced levels of adrenal androgens, leading to decreased bone age and delayed pubertal development, indicate a link between calcium intake, the hormonal milieu, and skeletal maturation.
journal_name
J Bone Miner Metabjournal_title
Journal of bone and mineral metabolismauthors
Bonofiglio D,Garofalo C,Catalano S,Marsico S,Aquila S,Andò Sdoi
10.1007/s00774-003-0451-5subject
Has Abstractpub_date
2004-01-01 00:00:00pages
64-70issue
1eissn
0914-8779issn
1435-5604journal_volume
22pub_type
杂志文章abstract::Osteonecrosis of the jaw (ONJ) associated with bisphosphonate therapy is a rare but severe side effect in osteoporosis patients. Recently, the number of osteoporosis patients with ONJ has dramatically increased in Japan. This has contributed to an increase in the number of patients avoiding extractions. However, there...
journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2019-09-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 临床试验,杂志文章
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章,评审
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-010-0194-z
更新日期:2011-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
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更新日期:2012-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-013-0525-y
更新日期:2014-09-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-017-0844-5
更新日期:2018-05-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-005-0626-3
更新日期:2005-01-01 00:00:00
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更新日期:2006-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
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更新日期:2010-07-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章,评审
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更新日期:2015-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2019-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
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更新日期:2009-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
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更新日期:2010-05-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-017-0827-6
更新日期:2018-03-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-014-0638-y
更新日期:2016-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-013-0458-5
更新日期:2013-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s007740200034
更新日期:2002-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of bone and mineral metabolism
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-019-01040-w
更新日期:2020-03-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-013-0482-5
更新日期:2013-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s007740050107
更新日期:2000-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-006-0703-2
更新日期:2006-01-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-013-0447-8
更新日期:2013-05-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-015-0711-1
更新日期:2016-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-013-0549-3
更新日期:2014-11-01 00:00:00
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journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-020-01193-z
更新日期:2021-01-06 00:00:00
abstract::Inactivating mutations and/or deletions of PHEX ( Phosphate-regulating gene with Homologies to Endopeptidase on the X chromosome) are responsible for X-linked hypophosphatemic rickets in humans. In the present study, three Drosophila PHEX homologues (dPHEX-1, -2, -3) were isolated by the screening of a Drosophila cDNA...
journal_title:Journal of bone and mineral metabolism
pub_type: 杂志文章
doi:10.1007/s00774-003-0440-8
更新日期:2004-01-01 00:00:00