RGD Reference Report - Isoflurane induces learning impairment that is mediated by interleukin 1beta in rodents. - Rat Genome Database

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Isoflurane induces learning impairment that is mediated by interleukin 1beta in rodents.

Authors: Cao, L  Li, L  Lin, D  Zuo, Z 
Citation: Cao L, etal., PLoS One. 2012;7(12):e51431. doi: 10.1371/journal.pone.0051431. Epub 2012 Dec 12.
RGD ID: 7204493
Pubmed: PMID:23251531   (View Abstract at PubMed)
PMCID: PMC3520904   (View Article at PubMed Central)
DOI: DOI:10.1371/journal.pone.0051431   (Journal Full-text)

Postoperative cognitive decline is a clinical syndrome. Volatile anesthetics are commonly used during surgery. It is conceivable that volatile anesthetics may contribute to postoperative cognitive decline. Isoflurane can impair cognitive functions of animals under certain conditions. However, the mechanisms for this impairment are not clear. Here, male 18-month old Fisher 344 rats or 10-week old mice were exposed to 1.2 or 1.4% isoflurane for 2 h. Our studies showed that isoflurane impaired the cognitive functions of the rats in Barnes maze. Isoflurane-exposed rats had reduced freezing behavior during the training sessions in the fear conditioning test. This isoflurane effect was attenuated by lidocaine, a local anesthetic with anti-inflammatory property. Rats that had training sessions and were exposed to isoflurane 30 min later had freezing behavior similar to that of control animals. Isoflurane increased the expression of interleukin 1beta (IL-1beta), interleukin-6 and activated caspase 3 in the hippocampus of the 18-month old rats. IL-1beta positive staining was co-localized with that of NeuN, a neuronal marker. The increase of IL-1beta and activated caspase 3 but not interleukin-6 was attenuated by lidocaine. Isoflurane also impaired the cognitive functions of 10-week old C57BL/6J mice and increased IL-1beta in their hippocampi. However, isoflurane did not affect the cognitive functions of IL-1beta deficient mice. Our results suggest that isoflurane impairs the learning but may not affect the recall of the aged rats. IL-1beta may play an important role in this isoflurane effect.

RGD Manual Disease Annotations    Click to see Annotation Detail View

Objects Annotated

Genes (Rattus norvegicus)
Il1b  (interleukin 1 beta)

Genes (Mus musculus)
Il1b  (interleukin 1 beta)

Genes (Homo sapiens)
IL1B  (interleukin 1 beta)


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