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Molecular Neurobiology

, Volume 53, Issue 2, pp 1031–1044 | Cite as

Propofol Administration During Early Postnatal Life Suppresses Hippocampal Neurogenesis

  • Jing Huang
  • Sheng Jing
  • Xi Chen
  • Xiaohang Bao
  • Zhiyong Du
  • Hong Li
  • Tiande YangEmail author
  • Xiaotang FanEmail author
Article

Abstract

Propofol is currently one of the most widely used intravenous anesthetics and has been indicated to induce cognitive dysfunction in adults. Here, we investigated the effects of propofol exposure during early postnatal life on hippocampal neurogenesis. Propofol (30 or 60 mg/kg) was administered to mice on either postnatal day (P) 7 or P7–P9; cell proliferation and neurogenesis in the dentate gyrus (DG) were evaluated on P8 or P17. It showed that exposure to propofol on P7 decreased hippocampal cell proliferation as indicated by BrdU and Sox2 immunostaining at P8 in propofol treatment at the dosage of 60 mg/kg but not at the dosage of 30 mg/kg. Western blots revealed propofol treatment decreased Akt or extracellular signal-related kinase (ERK) 1/2 phosphorylation in the hippocampus at P8. Propofol treatment on P7 to P9 reduced the numbers of newly formed neurons in the DG at P17, which was accompanied by delay of granule neuron maturation and decreased the density of dendritic spines, particularly the mushroom-shaped mature spines. Furthermore, the in vitro findings indicated propofol suppressed cell proliferation and cell mitosis and activated apoptosis of C17.2 neural stem cell line in a dose-dependent manner. These findings suggest that propofol impairs cell proliferation and inhibits neurogenesis in the immature mouse brain and thus is possibly involved in the cognitive dysfunction induced by propofol anesthesia.

Keywords

Propofol Hippocampus Neurogenesis Neurotoxicity Mouse 

Notes

Acknowledgments

This study was supported by the National Nature Science Foundation of China (No. 81371197) and the Natural Science Foundation Project of CQ CSTC 2013jjB10028.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Jing Huang
    • 1
  • Sheng Jing
    • 1
  • Xi Chen
    • 2
    • 3
  • Xiaohang Bao
    • 1
  • Zhiyong Du
    • 1
  • Hong Li
    • 1
  • Tiande Yang
    • 1
    Email author
  • Xiaotang Fan
    • 4
    Email author
  1. 1.Department of Anesthesiology, Xinqiao HospitalThird Military Medical UniversityChongqingPeople’s Republic of China
  2. 2.School of MedicineNankai UniversityTianjinPeople’s Republic of China
  3. 3.Department of OphthalmologyChinese People’s Liberation Army General HospitalBeijingPeople’s Republic of China
  4. 4.Department of Developmental Neuropsychology, School of PsychologyThird Military Medical UniversityChongqingPeople’s Republic of China

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