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Zhang F, Zhu ZQ, Liu DX, et al. Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats. Exp Ther Med. 2014;8(2):471-477doi: 10.3892/etm.2014.1769.
Zhang, F., Zhu, Z. Q., Liu, D. X., Zhang, C., Gong, Q. H., & Zhu, Y. H. (2014). Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats. Experimental and therapeutic medicine, 8(2), 471-477. https://doi.org/10.3892/etm.2014.1769
Zhang, Fan, et al. "Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats." Experimental and therapeutic medicine vol. 8,2 (2014): 471-477. doi: https://doi.org/10.3892/etm.2014.1769
Zhang F, Zhu ZQ, Liu DX, Zhang C, Gong QH, Zhu YH. Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats. Exp Ther Med. 2014 Aug;8(2):471-477. doi: 10.3892/etm.2014.1769. Epub 2014 Jun 10. PMID: 25009603; PMCID: PMC4079394.
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Exp Ther Med. 2014 Aug;8(2):471-477. doi: 10.3892/etm.2014.1769. Epub 2014 Jun 10.

Emulsified isoflurane anesthesia decreases brain-derived neurotrophic factor expression and induces cognitive dysfunction in adult rats.

Experimental and therapeutic medicine

Fan Zhang, Zhao-Qiong Zhu, DE-Xing Liu, Chao Zhang, Qi-Hai Gong, Yu-Hang Zhu

Affiliations

  1. Department of Anesthesiology, Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China.
  2. Department of Pharmacology, Zunyi Medical College, Zunyi, Guizhou 563000, P.R. China.

PMID: 25009603 PMCID: PMC4079394 DOI: 10.3892/etm.2014.1769

Abstract

Post-operative cognitive dysfunction (POCD) is a severe complication characterized by cognitive decline in patients following anesthesia and surgery. Previous studies have suggested that volatile anesthetics, for example isoflurane, may contribute to such impairment. In the present study, the effects of emulsified isoflurane (EI) exposure on cognitive function, as well as the potential mechanisms, were investigated in animal models. Eight-month-old male rats were administered a single intravenous injection of 8% EI. The rats were then subjected to the Morris water maze test to assess their cognitive functions at different time-points following drug administration. Samples were taken in order to detect the plasma corticosterone concentration and the levels of hippocampal brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF), as well as the expression of BDNF and NGF in the hippocampal region. The results showed that a single injection of EI caused reversible learning and memory dysfunction in adult rats. It was found that downregulation of BDNF expression may contribute to the isoflurane-induced cognitive impairment of these rats. Increased expression of NGF may be associated with the protection mechanism subsequent to learning and memory function decline, and therefore may accelerate the recovery of cognitive function.

Keywords: brain-derived neutrophic factor; cognitive dysfunction; emulsified isoflurane; nerve growth factor; plasma corticosterone

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