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Original Article

Reduced bone mass and increased bone turnover in postmenopausal women with epilepsy using antiepileptic drug monotherapy

, , , , , & show all
Pages 759-766 | Received 13 Mar 2008, Accepted 21 May 2008, Published online: 08 Jul 2009
 

Abstract

Objectives. The aims of this study were to assess the occurrence of osteoporosis and fracture rate in Norwegian postmenopausal women with epilepsy using antiepileptic drugs (AEDs), and to investigate how AEDs may affect bone health. Material and methods. Twenty‐six female patients receiving AED monotherapy and 26 individually matched healthy controls answered questions about their general health, lifestyle and previous fractures. For both groups, bone mineral density (BMD) was measured by DEXA, and serum samples were analysed for biochemical bone turnover markers and haematological parameters. Results. The patients, particularly those treated with enzyme‐inducing AEDs, had significantly lower BMD than the controls. Additionally, 62 % of the women with epilepsy had osteoporotic T‐values in one or more regions, compared with 27 % in the control group. There was a non‐significant tendency towards an increased fracture rate among the patients. Markers for bone formation (ALP, bALP, osteocalcin) and bone resorption (Crosslaps) were elevated in the patient group compared with the controls. Conclusions. Compared with the healthy controls, we found an increased occurrence of osteoporosis, probably due to increased bone turnover, among Norwegian postmenopausal women with epilepsy undergoing AED monotherapy, which may render these women especially vulnerable to fractures.

Acknowledgement

We thank the Norwegian Osteoporosis Society for financial support.

Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.

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