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Cited by 386

The DOI matches its Crossref record; 71 of the 71 references it cites were found in a registry or an index.

Anesthesia Leads to Tau Hyperphosphorylation through Inhibition of Phosphatase Activity by Hypothermia

Open access
Planel, Emmanuel, Richter, Karl E. G., Nolan, Charles E., Finley, James E., Liu, Li, Wen, Yi, Krishnamurthy, Pavan, Herman, Mathieu, Wang, Lili, Schachter, Joel B., Nelson, Robert B., Lau, Lit-Fui, Duff, Karen E.·2007·The Journal of Neuroscience

Abstract

Postoperative cognitive dysfunction, confusion, and delirium are common after general anesthesia in the elderly, with symptoms persisting for months or years in some patients. Even middle-aged patients are likely to have postoperative cognitive dysfunction for months after surgery, and Alzheimer's disease (AD) patients appear to be particularly at risk of deterioration after anesthesia. Several investigators have thus examined whether general anesthesia is associated with AD, with some studies suggesting that exposure to anesthetics may increase the risk of AD. However, little is known on the biochemical consequences of anesthesia on pathogenic pathways in vivo . Here, we investigated the effect of anesthesia on tau phosphorylation and amyloid precursor protein (APP) metabolism in mouse brain. We found that, regardless of the anesthetic used, anesthesia induced rapid and massive hyperphosphorylation of tau, rapid and prolonged hypothermia, inhibition of Ser/Thr PP2A (protein phosphatase 2A), but no changes in APP metabolism or Aβ (β-amyloid peptide) accumulation. Reestablishing normothermia during anesthesia completely rescued tau phosphorylation to normal levels. Our results indicate that changes in tau phosphorylation were not a result of anesthesia per se, but a consequence of anesthesia-induced hypothermia, which led to inhibition of phosphatase activity and subsequent hyperphosphorylation of tau. These findings call for careful monitoring of core temperature during anesthesia in laboratory animals to avoid artifactual elevation of protein phosphorylation. Furthermore, a thorough examination of the effect of anesthesia-induced hypothermia on the risk and progression of AD is warranted.

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Metadata

Authors
Planel, E., Richter, K. E. G., Nolan, C. E., Finley, J. E., Liu, L., Wen, Y., Krishnamurthy, P., Herman, M., Wang, L., Schachter, J. B., Nelson, R. B., Lau, L.-F., & Duff, K. E.
Venue
The Journal of Neuroscience
Published
2007-03-21
Volume
27
Issue
12
Pages
3090-3097
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2077859404
Cited by
386
References
71
FWCI
5.86
Type
journal article
Language
en
Open access
hybrid

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Planel, E., Richter, K. E. G., Nolan, C. E., Finley, J. E., Liu, L., Wen, Y., Krishnamurthy, P., Herman, M., Wang, L., Schachter, J. B., Nelson, R. B., Lau, L.-F., & Duff, K. E. (2007). Anesthesia Leads to Tau Hyperphosphorylation through Inhibition of Phosphatase Activity by Hypothermia. The Journal of Neuroscience. https://doi.org/10.1523/jneurosci.4854-06.2007

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.