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Published in: BMC Gastroenterology 1/2012

Open Access 01-12-2012 | Research article

Fibroblast growth factor 23 contributes to diminished bone mineral density in childhood inflammatory bowel disease

Authors: Mostafa Abdel-Aziz El-Hodhod, Ahmad Mohamed Hamdy, Amal Ahmed Abbas, Sherine George Moftah, Alhag Ahmed Mohamed Ramadan

Published in: BMC Gastroenterology | Issue 1/2012

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Abstract

Background

Diminished bone mineral density (BMD) is of significant concern in pediatric inflammatory bowel disease (IBD). Exact etiology is debatable. The recognition of fibroblast growth factor 23 (FGF23), a phosphaturic hormone related to tumor necrosis factor alpha (TNF-α) makes it plausible to hypothesize its possible relation to this pathology.

Methods

In this follow up case control study, BMD as well as serum levels of FGF23, calcium, phosphorus, alkaline phosphatase, creatinine, parathyroid hormone, 25 hydroxy vitamin D3 and 1, 25 dihydroxy vitamin D3 were measured in 47 children with IBD during flare and reassessed in the next remission.

Results

Low BMD was frequent during IBD flare (87.2%) with significant improvement after remission (44.7%). During disease flare, only 21.3% of patients had vitamin D deficiency, which was severe in 12.8%. During remission, all patients had normal vitamin D except for two patients with Crohn’s disease (CD) who remained vitamin D deficient. Mean value of serum FGF23 was significantly higher among patients with IBD during flare compared to controls. It showed significant improvement during remission but not to the control values. 1, 25 dihydroxy vitamin D3, FGF23, serum calcium and urinary phosphorus were significant determinants of BMD in IBD patients.

Conclusions

We can conclude that diminished BMD in childhood IBD is a common multifactorial problem. Elevated FGF23 would be a novel addition to the list of factors affecting bone mineral density in this context. Further molecular studies are warranted to display the exact interplay of these factors.
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Metadata
Title
Fibroblast growth factor 23 contributes to diminished bone mineral density in childhood inflammatory bowel disease
Authors
Mostafa Abdel-Aziz El-Hodhod
Ahmad Mohamed Hamdy
Amal Ahmed Abbas
Sherine George Moftah
Alhag Ahmed Mohamed Ramadan
Publication date
01-12-2012
Publisher
BioMed Central
Published in
BMC Gastroenterology / Issue 1/2012
Electronic ISSN: 1471-230X
DOI
https://doi.org/10.1186/1471-230X-12-44

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