Early changes in biochemical markers of bone formation during teriparatide therapy correlate with improvements in vertebral strength in men with glucocorticoid-induced osteoporosis

Farahmand, P.; Marin, F.; Hawkins, F.; Möricke, R.; Ringe, J. D.; Glüer, C.-C.; Papaioannou, N.; Minisola, S.; Martínezt, G.; Nolla, J. M.; Niedhart, C.; Guañabens, N.; Nuti, R.; Martín-Mola, E.; Thomasius, F.; Peña, J.; Graeff, C.; Kapetanos, G.; Petto, H.; Gentzel, A.; ... (2013). Early changes in biochemical markers of bone formation during teriparatide therapy correlate with improvements in vertebral strength in men with glucocorticoid-induced osteoporosis. Osteoporosis international, 24(12), pp. 2971-2981. Springer 10.1007/s00198-013-2379-5

[img]
Preview
Text
art%3A10.1007%2Fs00198-013-2379-5.pdf - Published Version
Available under License Publisher holds Copyright.

Download (331kB) | Preview

Summary Changes of the bone formation marker PINP correlated positively with improvements in vertebral strength in men with glucocorticoid-induced osteoporosis (GIO) who received 18-month treatment with teriparatide, but not with risedronate. These results support the use of PINP as a surrogate marker of bone strength in GIO patients treated with teriparatide. Introduction To investigate the correlations between biochemical markers of bone turnover and vertebral strength estimated by finite element analysis (FEA) in men with GIO. Methods A total of 92 men with GIO were included in an 18-month, randomized, open-label trial of teriparatide (20 μg/day, n = 45) and risedronate (35 mg/week, n = 47). High-resolution quantitative computed tomography images of the 12th thoracic vertebra obtained at baseline, 6 and 18 months were converted into digital nonlinear FE models and subjected to anterior bending, axial compression and torsion. Stiffness and strength were computed for each model and loading mode. Serum biochemical markers of bone formation (amino-terminal-propeptide of type I collagen [PINP]) and bone resorption (type I collagen cross-linked C-telopeptide degradation fragments [CTx]) were measured at baseline, 3 months, 6 months and 18 months. A mixed-model of repeated measures analysed changes from baseline and between-group differences. Spearman correlations assessed the relationship between changes from baseline of bone markers with FEA variables. Results PINP and CTx levels increased in the teriparatide group and decreased in the risedronate group. FEA-derived parameters increased in both groups, but were significantly higher at 18 months in the teriparatide group. Significant positive correlations were found between changes from baseline of PINP at 3, 6 and 18 months with changes in FE strength in the teriparatide-treated group, but not in the risedronate group. Conclusions Positive correlations between changes in a biochemical marker of bone formation and improvement of biomechanical properties support the use of PINP as a surrogate marker of bone strength in teriparatide-treated GIO patients.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB

UniBE Contributor:

Zysset, Philippe

Subjects:

500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

ISSN:

0937-941X

Publisher:

Springer

Language:

English

Submitter:

Philippe Zysset

Date Deposited:

12 May 2014 09:15

Last Modified:

18 Dec 2014 16:04

Publisher DOI:

10.1007/s00198-013-2379-5

BORIS DOI:

10.7892/boris.45328

URI:

https://boris.unibe.ch/id/eprint/45328

Actions (login required)

Edit item Edit item
Provide Feedback