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Biochemical markers of bone turnover
1Department of Chemical Pathology, Guy's, King's and St. Thomas' School of Medicine, St. Thomas' Campus, Lambeth Palace Road, SE1 7EH, London, UK. r.swaminathan@kcl.ac.uk
Clinica Chimica Acta; International Journal of Clinical Chemistry
|November 6, 2001
Summary
Biochemical markers like bone-specific alkaline phosphatase (BAP) and deoxypyridinium (DPD) or NTx are crucial for assessing osteoporosis risk and treatment effectiveness. These markers help monitor bone turnover, aiding in managing this widespread condition.
Area of Science:
- Endocrinology and Metabolism
- Biochemistry
- Orthopedics
Background:
- Osteoporosis is a global epidemic requiring effective risk assessment and treatment monitoring.
- Biochemical markers of bone turnover are essential tools for managing osteoporosis.
- These markers reflect the activity of bone-forming (osteoblasts) and bone-resorbing (osteoclasts) cells.
Purpose of the Study:
- To review and compare biochemical markers for bone turnover.
- To identify reliable markers for assessing osteoporosis risk and treatment efficacy.
- To highlight the advantages of specific markers over others.
Main Methods:
- Review of existing literature on bone turnover markers.
- Comparison of immunoassay techniques for marker measurement.
- Evaluation of marker stability, biological variation, and clinical utility.
Main Results:
- Bone formation markers include bone-specific alkaline phosphatase (BAP) and osteocalcin (OC).
- Osteocalcin (OC) shows in vitro degradation and variability; BAP is more stable.
- Bone resorption markers include deoxypyridinium (DPD) and NTx; DPD has significant biological variation.
Conclusions:
- Serum BAP is a stable marker of bone formation.
- DPD and NTx are key markers for assessing bone resorption.
- Serum BAP and DPD or NTx represent the current standard for bone marker assessment.