Erschienen in:
12.08.2022 | Original Article
Bone mass and biomarkers in young women with anorexia nervosa: a prospective 3-year follow-up study
verfasst von:
Anna Svedlund, Cecilia Pettersson, Bojan Tubic, Lars Ellegård, Anders Elfvin, Per Magnusson, Diana Swolin-Eide
Erschienen in:
Journal of Bone and Mineral Metabolism
|
Ausgabe 6/2022
Einloggen, um Zugang zu erhalten
Abstract
Introduction
Anorexia nervosa (AN) increases the risk of impaired bone health, low areal bone mineral density (aBMD), and subsequent fractures. This prospective study investigated the long-term effects of bone and mineral metabolism on bone and biomarkers in 22 women with AN.
Materials and methods
Body composition and aBMD were measured by dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography. Total and free 25-hydroxyvitamin D (25OHD), C-terminal collagen cross-links (CTX), osteocalcin, bone-specific alkaline phosphatase (BALP), leptin, sclerostin, and oxidized/non-oxidized parathyroid hormone (PTH) were analyzed before and after 12 weeks of intensive nutrition therapy and again 3 years later. An age-matched comparison group of 17 healthy women was recruited for the 3-year follow-up.
Results
Body mass index (BMI) and fat mass increased from baseline to 3 years in women with AN. Sclerostin decreased during nutrition therapy and further over 3 years, indicating reduced bone loss. CTX was elevated at baseline and after 12 weeks but decreased over 3 years. BALP increased during nutrition therapy and stabilized over 3 years. Free 25OHD was stable during treatment but decreased over 3 years. Non-oxidized PTH was stable during treatment but increased over 3 years. Trabecular volumetric BMD in AN patients decreased during the first 12 weeks and over 3 years despite stable BMI and bone biomarkers implying increased BMD.
Conclusion
Our findings highlight the importance of early detection and organized long-term follow-up of bone health in young women with a history of AN.