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Article

Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism

  • Authors:
    • Zhibin Xiao
    • Pengcheng Ren
    • Yang Chao
    • Qianyun Wang
    • Jianke Kuai
    • Miaomiao Lv
    • Lei Chen
    • Changjun Gao
    • Xude Sun
  • View Affiliations / Copyright

    Affiliations: Department of Anesthesiology, Tangdou Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China, Department of Stomatology, The 323 Hospital of People's Liberation Army, Xi'an, Shaanxi 710054, P.R. China, Department of Medicine, The 323 Hospital of People's Liberation Army, Xi'an, Shaanxi 710054, P.R. China, Department of Anesthesiology, The 323 Hospital of People's Liberation Army, Xi'an, Shaanxi 710054, P.R. China, Department of Obstetrics and Gynecology, The Navy General Hospital of People's Liberation Army, Beijing 100059, P.R. China
  • Pages: 675-683
    |
    Published online on: March 4, 2015
       https://doi.org/10.3892/mmr.2015.3408
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Abstract

Inflammation and immunity are important in the pathogenesis of cerebral ischemia. Toll‑like receptor 4 (TLR4) is involved in the inflammatory responses of injured brain tissues. Emerging studies have focused on the effect of isoflurane (ISO) pretreatment on cerebral ischemia, however, the association between ISO pretreatment and TLR4 during cerebral ischemia remains to be elucidated. In the present study, the protective role of ISO pretreatment in rats with focal cerebral ischemia reperfusion was investigated and the molecular mechanism was discussed. Using a middle cerebral artery occlusion (MCAO) model, triphenyltetrazolium chloride staining was utilized to measure the infarct volume and brain edema and immunofluorescence staining was used to detect the MCAO‑induced TLR4 expression and localization. Western blot analyses were conducted to quantify the protein expression levels of TLR4, myeloid differentiation primary response 88 (MyD88) and nuclear factor (NF)‑κB in ischemic brain tissue at different time points. The results demonstrated that, following ISO pretreatment, the neurological deficits, brain edema and cerebral infarct size caused by ischemia/reperfusion were attenuated. The astrocyte and microglial activation in the brain tissue was decreased. In addition, the expression levels of TLR4, MyD88 and NF‑κB were decreased. The present study indicated that ISO pretreatment may protect the brain from ischemic damage by downregulating the expression levels of TLR4, MyD88 and NF‑κB.
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Copy and paste a formatted citation
Spandidos Publications style
Xiao Z, Ren P, Chao Y, Wang Q, Kuai J, Lv M, Chen L, Gao C and Sun X: Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism. Mol Med Rep 12: 675-683, 2015.
APA
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M. ... Sun, X. (2015). Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism. Molecular Medicine Reports, 12, 675-683. https://doi.org/10.3892/mmr.2015.3408
MLA
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M., Chen, L., Gao, C., Sun, X."Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism". Molecular Medicine Reports 12.1 (2015): 675-683.
Chicago
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M., Chen, L., Gao, C., Sun, X."Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism". Molecular Medicine Reports 12, no. 1 (2015): 675-683. https://doi.org/10.3892/mmr.2015.3408
Copy and paste a formatted citation
x
Spandidos Publications style
Xiao Z, Ren P, Chao Y, Wang Q, Kuai J, Lv M, Chen L, Gao C and Sun X: Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism. Mol Med Rep 12: 675-683, 2015.
APA
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M. ... Sun, X. (2015). Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism. Molecular Medicine Reports, 12, 675-683. https://doi.org/10.3892/mmr.2015.3408
MLA
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M., Chen, L., Gao, C., Sun, X."Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism". Molecular Medicine Reports 12.1 (2015): 675-683.
Chicago
Xiao, Z., Ren, P., Chao, Y., Wang, Q., Kuai, J., Lv, M., Chen, L., Gao, C., Sun, X."Protective role of isoflurane pretreatment in rats with focal cerebral ischemia and the underlying molecular mechanism". Molecular Medicine Reports 12, no. 1 (2015): 675-683. https://doi.org/10.3892/mmr.2015.3408
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