• Clinical and Experimental Pediatrics
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• 제45권10호
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• pp.1288-1291
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• 2002

저자들은 임신 1개월 전 전신강직간대성 발작이 있어 임신 중에 발작 조절을 위해 valproate를 복용한 산모의 아이에게서 양 팔꿈치의 구축을 동반한 fetal valproate syndrome의 특징을 지닌 1례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

• Biomolecules & Therapeutics
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• 제28권5호
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• pp.389-396
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• 2020

Valproic acid is a clinically used mood stabilizer and antiepileptic drug. Valproic acid has been suggested as a teratogen associated with the manifestation of neurodevelopmental disorders, such as fetal valproate syndrome and autism spectrum disorders, when taken during specific time window of pregnancy. Previous studies proposed that prenatal exposure to valproic acid induces abnormal proliferation and differentiation of neural progenitor cells, presumably by inhibiting histone deacetylase and releasing the condensed chromatin structure. Here, we found valproic acid up-regulates the transcription of T-type calcium channels by inhibiting histone deacetylase in neural progenitor cells. The pharmacological blockade of T-type calcium channels prevented the increased proliferation of neural progenitor cells induced by valproic acid. Differentiated neural cells from neural progenitor cells treated with valproic acid displayed increased levels of calcium influx in response to potassium chloride-induced depolarization. These results suggest that prenatal exposure to valproic acid up-regulates T-type calcium channels, which may contribute to increased proliferation of neural progenitor cells by inducing an abnormal calcium response and underlie the pathogenesis of neurodevelopmental disorders.