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Increased bone turnover in prepubertal, pubertal, and postpubertal patients receiving carbamazepine
Alberto Verrotti1, Rita Greco, Giuseppe Latini
1Department of Medicine, Section of Pediatrics, University of Chieti, Italy.
Purpose:
To study the markers of bone turnover in epilepsy patients in the different stages of the pubertal growth before and after the beginning of carbamazepine (CBZ) monotherapy.
Methods:
We have investigated bone turnover in 60 epilepsy patients treated with CBZ. They were stratified according to pubertal stage and compared with a control group of 60 sex- and age-matched healthy children.
Results:
After 2 years of therapy, we found higher values of the serum markers of bone formation [bone alkaline phosphatase (bone ALP), osteocalcin (OC), carboxy-terminal propeptide of type I procollagen (PICP), amino-terminal propeptide of type III procollagen (PIIINP)], and of bone resorption [carboxy-terminal telopeptide of type I collagen (ICTP) and the urinary cross-linked N-telopeptides of type I collagen (NTX)] in patients than in control subjects, in presence of a normal vitamin D metabolism.
Conclusions:
CBZ induces an increase of bone formation and of bone resorption that seems to be independent of the pubertal stage.
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