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Clinical Chemistry and Laboratory Medicine (CCLM)

Published in Association with the European Federation of Clinical Chemistry and Laboratory Medicine (EFLM)

Editor-in-Chief: Plebani, Mario

Ed. by Gillery, Philippe / Lackner, Karl J. / Lippi, Giuseppe / Melichar, Bohuslav / Payne, Deborah A. / Schlattmann, Peter / Tate, Jillian R.

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Volume 45, Issue 12 (Dec 2007)

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The effect of B-vitamins on biochemical bone turnover markers and bone mineral density in osteoporotic patients: a 1-year double blind placebo controlled trial

Markus Herrmann
  • 1ANZAC Research Institute, University of Sydney, Sydney NSW, Australia and Department of Clinical Chemistry and Laboratory Medicine, University Hospital of Saarland, Homburg/Saar, Germany
/ Natalia Umanskaya
  • 2Department of Clinical Chemistry and Laboratory Medicine, University Hospital of Saarland, Homburg/Saar, Germany
/ Lydia Traber
  • 3Labor Limbach, Heidelberg, Germany
/ Heinrich Schmidt-Gayk
  • 4Labor Limbach, Heidelberg, Germany and Unfortunately, Prof. Heinrich Schmidt-Gayk deceased while this work was in progress.
/ Wolfgang Menke
  • 5Rehaklinik Saarschleife, Mettlach-Orscholz, Germany
/ Gerd Lanzer
  • 6Orthopedic Studio, Völklingen, Germany
/ Markus Lenhart
  • 7Orthopedic Studio, St. Wendel, Germany
/ Johannes Peter Schmidt
  • 8Department of Clinical Chemistry and Laboratory Medicine, University Hospital of Saarland, Homburg/Saar, Germany
/ Wolfgang Herrmann
  • 9Department of Clinical Chemistry and Laboratory Medicine, University Hospital of Saarland, Homburg/Saar, Germany
Published Online: 2007-12-08 | DOI: https://doi.org/10.1515/CCLM.2007.352

Abstract

Background: Hyperhomocysteinemia is a new risk factor for osteoporosis. This study analyzed the effect of a homocysteine (HCY)-lowering treatment in osteoporotic individuals.

Methods: Osteoporotic subjects (n=47, 55–82 years) were treated with either a combination of 2.5 mg folate, 0.5 mg vitamin B12 and 25 mg vitamin B6 or placebo. Bone mineral density (BMD) at lumbar spine and hip was measured at baseline and after 1 year. Urinary desoxypyridinoline cross-links (DPD) and plasma levels of tartrate resistant acid phosphatase (TRAP), C-terminal cross-links of collagen I (CTx), pro-collagen type I N-terminal peptide (PINP) and osteocalcin (OC) were measured after 0, 4, 8 and 12 months.

Results: B-vitamin supplementation significantly reduced HCY (0 vs. 12 months: 13.6±4.8 vs. 8.9±2.4 μmol/L). Placebo treatment had no effect on HCY (0 vs. 12 months: 12.0±3.4 vs. 12.7±3.9μmol/L). BMD, TRAP, CTx, OC and PINP did not change throughout the study in both groups. Vitamin treatment decreased urinary DPD by –13% (p<0.01) after 8 and 12 months. In a sub-group analysis of hyperhomocysteinemic subjects (HCY>15 μmol/L, n=8), B-vitamin treatment tended to increase BMD at the lumbar spine, with a t-score from –2.7 to –1.7, and to decrease OC and PINP by approximately 50%.

Conclusions: B-vitamin supplementation had no consistent effects on bone turnover or BMD. However, the situation may be different in patients with hyperhomocysteinemia.

Clin Chem Lab Med 2007;45:1785–92.

Keywords: bone mineral density; C-terminal telopeptides of collagen I (CTx); folate; homocysteine; osteocalcin; pro-collagen type I N-terminal peptide (PINP); tartrate-resistant acid phosphatase (TRAP); urinary desoxypyridinoline cross-links (DPD); vitamin B6; vitamin B12

About the article

Corresponding author: Dr. Markus Herrmann, ANZAC Research Institute, Bone Research Program, Gate 3, Hospital Road, Concord, NSW 2139, Australia Phone: +61-2-9767-9165, Fax: +61-2-9767-9101,


Received: 2007-08-15

Accepted: 2007-10-01

Published Online: 2007-12-08

Published in Print: 2007-12-01



Citation Information: Clinical Chemical Laboratory Medicine, ISSN (Online) 14374331, ISSN (Print) 14346621, DOI: https://doi.org/10.1515/CCLM.2007.352. Export Citation

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