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Statins have additive effects to vertebral bone mineral density in combination with risedronate in
Hamit Alper Tanriverdi1, Aykut Barut, Selda Sarikaya
1Menopause Clinic, Department of Obstetrics and Gynecology, Karaelmas University Medical School, 67600 Kozlu, Zonguldak, Turkey. tanriverdi@artemisonline.net
Background:
Recent data suggest that statins used in the treatment of hypercholesterolaemia decrease fracture risk. In this study, we aimed to investigate prospectively whether statins have an additive effect to bisphosphonates (risedronate) according to the primary hypothesis that the addition of atorvastatin to risedronate would produce an increase, from baseline, in lumbar vertebrae and total hip BMD that was greater than that observed with risedronate alone.
Methods:
A total of 120 hypercholesterolaemic postmenopausal women with osteoporosis or osteopenia were randomized to receive risedronate (5 mg/day) or risedronate (5 mg/day) plus atorvastatin (20 mg/day). Changes in bone mineral density in the lumbar spine and hip, and serum lipid and glucose metabolism changes were assessed.
Results:
Compared with risedronate alone, at 6 months, risedronate plus atorvastatin produced significantly greater increases in the bone mineral density of the lumbar spine (1.58% versus 0.75%, p < 0.05). We found no difference after therapy in BMD of the total hip (1.2% versus 1.1%). Risedronate plus atorvastatin therapy had favorable effects on the serum lipid profile: LDL and total cholesterol. Serum fasting glucose and HbA1c levels were not affected during the treatments.
Conclusion:
Statins have modest additive effects to bisphosphonates in improving lumbar spine bone mineral density in hypercholesterolaemic postmenopausal women with established osteoporosis-osteopenia. A long-term study with adequate sample size is necessary to assess the effects of statins -- in combination or alone -- on the bones and prevention of fractures.
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