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Article Open Access

Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats

  • Authors:
    • Yiyun Cao
    • Zhengqian Li
    • Lijun Ma
    • Cheng Ni
    • Lunxu Li
    • Ning Yang
    • Chengmei Shi
    • Xiangyang Guo
  • View Affiliations / Copyright

    Affiliations: Department of Anesthesiology, The Sixth People's Hospital East Campus, Shanghai University of Medicine and Health Sciences, Shanghai 200233, P.R. China, Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, P.R. China, Department of Medical Imaging, North Minzu University, Yinchuan, Ningxia 750021, P.R. China
    Copyright: © Cao et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY 4.0].
  • Pages: 7730-7736
    |
    Published online on: April 5, 2018
       https://doi.org/10.3892/mmr.2018.8850
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Abstract

Elderly patients are at high risk of developing postoperative cognitive dysfunction (POCD) after prolonged exposure to inhaled anesthetics. However, the pathogenesis of POCD remains unknown. Hypoxia‑inducible factor‑1α (HIF‑1α) is activated by inhaled anesthetics. The aim of the present study was to determine the role of HIF‑1α in isoflurane‑induced neuroinflammation and the resulting cognitive impairment. Following a 4‑h exposure to 1.5% isoflurane in 20‑month‑old rats, increased expression of HIF‑1α protein, activation of nuclear factor (NF)‑κB signaling and increased expression of TNF‑1α were observed in the hippocampus of isoflurane‑exposed rats compared with the control group. Pharmacological inhibition of HIF‑1α activation by 5‑[1‑(phenylmethyl)‑1H‑indazol‑3‑yl]‑2‑furanmethanol (YC‑1) markedly suppressed the enhanced expression of HIF‑1α, disrupted NF‑κB signaling pathway activity and inhibited the isoflurane‑induced increase of TNF‑1α expression. YC‑1 pretreatment also significantly attenuated isoflurane‑induced cognitive deficits according to the results of the Morris water maze task. These results suggest that hippocampal HIF‑1α appears to be involved in an upstream mechanism of isoflurane‑induced cognitive impairment. Further research is warranted to fully clarify the pathogenesis and investigate HIF‑1α as a potential therapeutic target for POCD.
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Copy and paste a formatted citation
Spandidos Publications style
Cao Y, Li Z, Ma L, Ni C, Li L, Yang N, Shi C and Guo X: Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats. Mol Med Rep 17: 7730-7736, 2018.
APA
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N. ... Guo, X. (2018). Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats. Molecular Medicine Reports, 17, 7730-7736. https://doi.org/10.3892/mmr.2018.8850
MLA
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N., Shi, C., Guo, X."Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats". Molecular Medicine Reports 17.6 (2018): 7730-7736.
Chicago
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N., Shi, C., Guo, X."Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats". Molecular Medicine Reports 17, no. 6 (2018): 7730-7736. https://doi.org/10.3892/mmr.2018.8850
Copy and paste a formatted citation
x
Spandidos Publications style
Cao Y, Li Z, Ma L, Ni C, Li L, Yang N, Shi C and Guo X: Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats. Mol Med Rep 17: 7730-7736, 2018.
APA
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N. ... Guo, X. (2018). Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats. Molecular Medicine Reports, 17, 7730-7736. https://doi.org/10.3892/mmr.2018.8850
MLA
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N., Shi, C., Guo, X."Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats". Molecular Medicine Reports 17.6 (2018): 7730-7736.
Chicago
Cao, Y., Li, Z., Ma, L., Ni, C., Li, L., Yang, N., Shi, C., Guo, X."Isoflurane‑induced postoperative cognitive dysfunction is mediated by hypoxia‑inducible factor‑1α‑dependent neuroinflammation in aged rats". Molecular Medicine Reports 17, no. 6 (2018): 7730-7736. https://doi.org/10.3892/mmr.2018.8850
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