| Vitamin D metabolites (25-hydroxyvitamin D, 24,25-dihydroxyvitamin D and 1,25-dihydroxyvitamin D) and osteocalcin in beta-thalassaemia. | |
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MedLine Citation:
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PMID: 9202793 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Serum levels of the vitamin D metabolites 25-hydroxyvitamin D, 24,25-dihydroxyvitamin D, and 1,25-dihydroxyvitamin D, and of osteocalcin, C-terminal parathyroid hormone and other biochemical indices related to bone metabolism, were determined in two groups of patients with beta-thalassaemia aged 5-10 years (summer 7.8 +/- 0.4 years, mean +/- SEM, and winter 7.7 +/- 0.4 years, group A, n = 15) and 11-23 years (16.6 +/- 0.9 and 15.7 +/- 0.9 years in summer and winter, respectively, group B, n = 22). Emphasis was given to populations of school and adolescent ages and to the seasons of summer and winter when vitamin D status demonstrates the widest extremes. The mean serum levels of 25-hydroxyvitamin D in patients aged 5-10 years did not differ from those of controls during both seasons studied. In contrast, in the age group 11-23 years these levels were found to be lower in patients than in controls both in winter (10.6 +/- 0.9 ng/ml vs 15.0 +/- 2.0 ng/ml, p < 0.05) and summer (20.2 +/- 2.1 ng/ml vs 27.1 +/- 2.0 ng/ml, p < 0.05). The serum concentrations of 24,25-dihydroxyvitamin D were lower in the thalassaemic patients than in controls in both age groups and both seasons. In the patients under 10 years of age the mean values of this metabolite in winter were 1.06 +/- 0.17 ng/ml vs 1.68 +/- 0.20 ng/ml in the respective controls (p < 0.05), and in summer 1.44 +/- 0.11 ng/ml vs 2.35 +/- 0.36 ng/ml in controls (p < 0.05). In the group of patients aged 11-23 years, the mean levels of 24,25-dihydroxyvitamin D were in winter 0.65 +/- 0.12 ng/ml vs 1.12 +/- 0.19 ng/ml (p < 0.05) in controls and in summer 1.34 +/- 0.12 ng/ml vs 1.84 +/- 0.20 ng/ml (p < 0.05). The 1,25-dihydroxyvitamin D concentrations in both thalassaemic patient groups were significantly no different from those in the respective control groups. Serum osteocalcin, C-terminal parathyroid hormone, calcium, inorganic phosphate and alkaline phosphatase levels in the patients studied were not significantly different from those in controls, except for calcium and phosphate in the older group. In the older group of thalassaemic patients, serum calcium was lower than in the controls (2.26 +/- 0.03 vs 2.37 +/- 0.03 mmol/l, p < 0.05) in summer and serum phosphate higher than in the controls in winter (1.47 +/- 0.05 mmol/l vs 1.27 +/- 0.06 mmol/l, p < 0.05). |
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Authors:
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A Moulas; A Challa; N Chaliasos; P D Lapatsanis |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Acta paediatrica (Oslo, Norway : 1992) Volume: 86 ISSN: 0803-5253 ISO Abbreviation: Acta Paediatr. Publication Date: 1997 Jun |
Date Detail:
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Created Date: 1997-09-04 Completed Date: 1997-09-04 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9205968 Medline TA: Acta Paediatr Country: NORWAY |
Other Details:
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Languages: eng Pagination: 594-9 Citation Subset: IM |
Affiliation:
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Child Health Department, Medical School, University of Ioannina, Greece. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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24,25-Dihydroxyvitamin D 3
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blood Adolescent Adult Age Factors Body Weight Child Child, Preschool Humans Hydroxylation Osteocalcin / blood* Seasons Vitamin D / analogs & derivatives, blood*, metabolism beta-Thalassemia / blood* |
| Chemical | |
Reg. No./Substance:
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104982-03-8/Osteocalcin; 1406-16-2/Vitamin D; 40013-87-4/24,25-Dihydroxyvitamin D 3; 64719-49-9/25-hydroxyvitamin D; 66772-14-3/1,25-dihydroxyvitamin D |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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