Abstract
Sevoflurane is a safe and well-known inhaled anesthetic. Given that sevoflurane can be delivered to developing fetuses through the mother, it is critical to determine whether this agent affects fetal neurodevelopment. Recent research has sought to determine whether sevoflurane affects fetal brain development when the mother is exposed during the second to third trimester of pregnancy, considered to be the crucial period for the development of nervous system. However, even though the first trimester is a critical period for fetal organogenesis and the most susceptible time to teratogen exposure, research regarding the effects of sevoflurane on organogenesis, especially on brain development, is insufficient. In the present study, human embryonic stem cells (hESC)-derived cerebral organoids were exposed to sevoflurane during the time corresponding to the first trimester to investigate the effect of early sevoflurane exposure on fetal brain development, specifically the processes of neuronal differentiation and maturation. Organoid size exposed to the intermediate concentration of sevoflurane did not differ from control, immunofluorescence demonstrated that sevoflurane temporarily decreased the size of SOX2 + /N-cad + ventricular zone structures only during the mid-time point, and upregulated expression of TUJ1 and MAP2 only during the early time point. However, all markers returned to normal levels, and organoids formed normal cortical structures at the late time point. Our results suggest that maternal sevoflurane exposure during the first trimester of pregnancy can cause abnormal neuronal differentiation in the fetal brain. However, considering the recovery observed in later periods, sevoflurane exposure might not have lasting impacts on fetal brain development.
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This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (2019R1I1A1A01064174); by the 3D-TissueChip Based Drug Discovery Platform Program through the Korea Evaluation Institute of Industrial Technology, funded by the Ministry of Commerce, Industry and Energy (20009773); and by a grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute, funded by the Ministry of Health & Welfare, Republic of Korea (HI18C2458020021).
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J.Y. designed and supervised the study. J.A.L planned and performed all experiments. J.A.L, D.H.B, and Y.S.B analyzed data and wrote the manuscript. W.H.C and C.H.C reviewed the manuscript.
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Lee, J.A., Bae, D.H., Choi, W.H. et al. Effects of Sevoflurane Exposure on Fetal Brain Development Using Cerebral Organoids. J Mol Neurosci 72, 2440–2450 (2022). https://doi.org/10.1007/s12031-022-02080-0
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DOI: https://doi.org/10.1007/s12031-022-02080-0