| Title |
Vitamin D Status During Puberty in French Healthy Male Adolescents
|
|---|---|
| Published in |
Osteoporosis International, September 1999
|
| DOI | 10.1007/s001980050219 |
| Pubmed ID | |
| Authors |
J. Guillemant, P. Taupin, H. T. Le, N. Taright, A. Allemandou, G. Pérès, S. Guillemant |
| Abstract |
The vitamin D status was determined on one to four occasions either after summer (September-October) or after winter (March-April) in 175 male adolescents (13-17 years), resulting in 394 measurements of serum 25-hydroxyvitamin D (25(OH)D) and intact parathyroid hormone (iPTH). The subjects lived in a rural area to the north of Paris (49 degrees N). After summer the 25(OH)D concentration was 58.5 +/- 18.0 nmol/l (mean +/- SD), while after winter it had fallen to 20.6 +/-6.0 nmol/l (p = 0.0001). Meanwhile the iPTH concentration was 2.76 +/- 0.97 pmol/l (mean +/- SD) after summer and increased to 4.20 +/- 1.21 pmol/l after winter (p = 0. 0001). All the results were pooled and a nonlinear population model with random parameters was used to describe the relationship between serum iPTH and 25(OH)D. When the concentration of 25(OH)D was higher than 83 nmol/l, an iPTH mean 'plateau' level at 2.48 pmol/l was reached. When 25(OH)D concentrations fell below 83 nmol/l, the increase in iPTH concentration accelerates, and when the mean 25(OH)D concentration was equal to or lower than 10 nmol/l the mean iPTH level (4.97 pmol/l) was twice as high as the 'plateau' value. |
Mendeley readers
The data shown below were compiled from readership statistics for 24 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Netherlands | 1 | 4% |
| Unknown | 23 | 96% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 6 | 25% |
| Other | 4 | 17% |
| Researcher | 4 | 17% |
| Student > Ph. D. Student | 3 | 13% |
| Student > Bachelor | 3 | 13% |
| Other | 2 | 8% |
| Unknown | 2 | 8% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 11 | 46% |
| Biochemistry, Genetics and Molecular Biology | 3 | 13% |
| Agricultural and Biological Sciences | 3 | 13% |
| Nursing and Health Professions | 2 | 8% |
| Computer Science | 1 | 4% |
| Other | 0 | 0% |
| Unknown | 4 | 17% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 January 2011.
All research outputs
#7,521,897
of 22,955,959 outputs
Outputs from Osteoporosis International
#1,381
of 3,668 outputs
Outputs of similar age
#11,105
of 34,869 outputs
Outputs of similar age from Osteoporosis International
#11
of 19 outputs
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