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Bone tissue metabolism in men with ankylosing spondylitis
I Korczowska1, H Przepiera-Bedzak, M Brzosko
1Department of Rheumatology and Clinical Immunology, Medical University in Poznan, Poznan, Poland. ikorcz@post.pl
Advances in Medical Sciences
|November 25, 2011
Summary
Ankylosing spondylitis (AS) patients show reduced bone density, increasing osteoporosis risk with disease duration and age. Inflammation, particularly IL-6, may accelerate bone loss in AS.
Area of Science:
- Rheumatology
- Orthopedics
- Biochemistry
Background:
- Ankylosing spondylitis (AS) is associated with a high risk of osteoporosis.
- Immobility in AS patients poses further risks to bone health.
Purpose of the Study:
- To estimate bone tissue metabolism in AS patients.
- To assess the impact of disease duration, age, and inflammation on bone health in AS.
Main Methods:
- Dual-energy X-ray absorptiometry (DEXA) for bone mineral density (BMD).
- Biochemical markers: bone-specific alkaline phosphatase (BALP), osteocalcin (BGP), deoxypyridinoline (Dpd).
- Inflammatory markers: IL-6, TNF-alpha, CRP.
Main Results:
- AS patients exhibited significantly lower BMD compared to controls.
- Osteopenia/osteoporosis correlated with longer disease duration and older age.
- Dpd levels correlated with IL-6, TNF-alpha, CRP, and inversely with forearm BMD; IL-6 was higher in AS patients with osteopenia/osteoporosis.
Conclusions:
- Disease duration and age are risk factors for osteoporosis in AS.
- Inflammation, especially IL-6, may drive accelerated bone loss in AS by stimulating bone degradation.
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