Valproic Acid Impacts the Growth of Growth Plate Chondrocytes

Hueng-Chuen Fan, Shih-Yu Wang, Yi-Jen Peng and Herng-Sheng Lee
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Hueng-Chuen Fan: Department of Pediatrics, Tungs’ Taichung Metroharbor Hospital, Taichung 435, Taiwan
Shih-Yu Wang: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
Yi-Jen Peng: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
Herng-Sheng Lee: Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan

IJERPH, 2020, vol. 17, issue 10, 1-15

Abstract: A range of bone abnormalities including short stature have been reported to be associated with the use of antiepileptic drugs (AEDs) in children. Exactly how AEDs impact skeletal growth, however, is not clear. In the present study, rat growth plate chondrocytes were cultured to study the effects of AEDs, including valproic acid (VPA), oxcarbazepine (OXA), levetiracetam (LEV), lamotrigine (LTG), and topiramate (TPM) on the skeletal growth. VPA markedly reduced the number of chondrocytes by apoptosiswhile other AEDs had no effect. The apoptosis associated noncleaved and cleaved caspase 3, and caspases were increased by exposure to VPA, which up-regulated cyclooxygenase 2 (COX-2) mRNA and protein levels likely through histone acetylation. The COX-2 inhibitor NS-398 attenuated the effects of VPA up-regulating COX-2 expression and decreased VPA-induced caspase 3 expression. The use of VPA in children should be closely monitored or replaced, where appropriate, by AEDs which do not apparently affect the growth plate chondrocytes.

Keywords: growth plate chondrocyte; valproic acid; apoptosis; cyclooxygenase 2; histone acetylation (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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