alexa Bone Metabolism in Chronic Heart Failure
ISSN: 2329-9509

Journal of Osteoporosis and Physical Activity
Open Access

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Research Article

Bone Metabolism in Chronic Heart Failure

Panagiotis Zotos1*, Elisabet Kaldara1, Christos Kapelios1, Vasilios Sousonis1, Emmeleia Nana1, Varvara Agapitou2, Stavros Dimopoulos2, Christos D Kontogiannis1, Athanasios Chalazonitis3, Zafiria Margari1, Eleni Karga4, John V. Terrovitis1 and John N. Nanas1
1Department of Cardiology, University of Athens, Laiko Hospital, Athens, Greece
21st Critical Care Medicine Department, Evgenidio Hospital, University of Athens, Athens, Greece
3Department of Radiology, Alexandra Hospital, Athens, Greece
4Department of Endocrinology, Alexandra Hospital, Athens, Greece
Corresponding Author : Panagiotis Zotos
Department of Cardiology
University of Athens, Laiko Hospital Dorimachou 1 Str
30100 Agrinio, Greece
Tel: +302641102492
E-mail: [email protected]
Received June 02, 2014; Accepted July 08, 2014; Published July 12, 2014
Citation: Zotos P, Kaldara E, Kapelios C, Sousonis V, Nana E, et al. (2014) Bone Metabolism in Chronic Heart Failure. J Osteopor Phys Act 2:121. doi: 10.4172/2329-9509.1000121
Copyright: © 2014 Zotos P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Purpose: Chronic Heart Failure (HF) is complicated by bone loss and osteoporosis, which have been linked to hyperparathyroidism. We studied the bone metabolism and possible role of cytokines in patients suffering from HF.

Methods and results: We measured bone alkaline phosphatase (BALP), C-telopeptides of type I collagen (β-CTx) and Interleukin-(IL) 6 in 60 men, 56 ± 11 years of age, suffering from chronic HF, and in 13 age-matched men free from HF. We also measured total body and femoral bone densitometry and parathyroid hormone (PTH). The β-CTx concentrations were significantly higher in men with than in men without HF. The concentrations of BALP (12.4 ± 4.9 vs. 9.9 ± 3 μg/l; P=0.03) and β-CTx (0.67 ± 0.35 vs. 0.33 ± 0.21 ng/ml; P<0.001) were significantly higher in patients in New York Heart Association (NYHA) functional classes III or IV than in patients in classes I or II. Moderately strong correlations were observed between β-CTx, BALP, PTH and bone densitometry measurements. Positive correlations were observed between NYHA functional classes and a) mean PTH (r2=0.19; P<0.001) and b) mean β-CTx (r2=0.30; P<0.001) concentrations. Moreover, increasing serum β-CTx and BALP concentrations were correlated with measurements consistent with decreasing bone mass and increasing severity of HF. IL-6 was also correlated with β-CTx, BALP and PTH, though not with measurements of bone density. Increased serum concentrations of IL-6 were correlated with the severity of HF. β-CTx was a strong predictor of adverse clinical events (hazard ratio 6.32; 95% confidence interval 1.8-22.5; P=0.005), including after controlling for other prognostic markers of chronic HF severity and measurements of bone densitometry.

Conclusion: Chronic HF, particularly at advanced stages, was associated with an acceleration of bone turnover and uncoupling of bone formation and resorption. These changes in bone metabolism, among others, could be due to secondary hyperparathyroidism and the chronic inflammatory state associated with chronic HF. The increased osteoclastic activity observed in chronic HF was associated with a poor prognosis.

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