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Serum prolidase activity in postmenopausal osteoporosis
E S Namiduru1, A Binnur Erbagci, A Celik
1Department of Biochemistry and Clinical Biochemistry, University of Gaziantep, Faculty of Medicine, Gaziantep, Turkey. enamiduru@hotmail.com
Minerva Medica
|February 27, 2008
Summary
Serum prolidase activity does not correlate with bone mineral density in postmenopausal osteoporosis. Further research is needed to understand its role in premenopausal bone loss.
Area of Science:
- Biochemistry
- Endocrinology
- Orthopedics
Background:
- Prolidase is an enzyme crucial for collagen degradation.
- Elevated prolidase activity may indicate increased collagen breakdown, potentially aiding osteoporosis diagnosis.
- This study investigates serum prolidase activity in postmenopausal osteoporosis.
Purpose of the Study:
- To evaluate serum prolidase activity in postmenopausal women with osteoporosis.
- To assess the relationship between serum prolidase activity and bone metabolic markers.
Main Methods:
- Recruited 61 postmenopausal women (menopause ≥ 1 year, no hormone replacement).
- Assessed bone mineral density (BMD) using DXA (spine and femur).
- Analyzed serum and urinary markers including prolidase activity, deoxypyridinoline, calcium, phosphorus, and alkaline phosphatase.
Main Results:
- No significant difference in serum prolidase activity between osteoporotic and control groups.
- Serum prolidase activity did not correlate with BMD or other bone turnover markers.
- Osteoporotic group showed significantly higher urinary Dpd/creatinine and serum phosphorus levels.
Conclusions:
- Serum prolidase activity is not associated with BMD in postmenopausal osteoporosis (menopause > 1 year).
- The role of prolidase in premenopausal bone loss remains undetermined.
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