Abstract:
BACKGROUND:Quick and complete recovery of cognitive function after general anesthesia is desirable, particularly for working-age patients. Desflurane is less likely to have long-term effects than older-generation inhalational anesthetics, however, its short-term effects have not been fully investigated. Our objective was to elucidate the short-term effects of desflurane exposure on learning and memory in young adult rats. METHODS:Seven-week old male Sprague-Dawley rats were exposed to air (control), or desflurane at 0.7 or 1.2 minimum alveolar concentration (MAC) for 2 h (day 0). The inhibitory avoidance (IA) test was performed on day 1 to delineate the effects on contextual learning. Separate groups of control and 1.2 MAC desflurane animals underwent the IA test on days 3 and 7 to examine the time-dependent changes. Because the IA test is known to be dependent on the long-term potentiation (LTP) of the hippocampus and the trafficking of the GluR1 subunit of the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor into the synapses, the effects of 1.2 MAC desflurane on these phenomena were evaluated on day 1. RESULTS:Desflurane at 1.2 MAC, but not 0.7 MAC, significantly decreased the IA latencies on day 1 compared with the control (one-way ANOVA, F [2,48] = 5.974, P = 0.005, post hoc Tukey's, mean difference [95% confidence interval], control vs. 1.2 MAC, 168 [49.9 to 287], P = 0.004; control vs. 0.7 MAC, 67.5 [- 51.2 to 186], P = 0.362). The latencies were not affected on days 3 and 7 (day 3, control vs. desflurane, P = 0.861; day 7, control vs. desflurane, P > 0.999). Consistently, hippocampal LTP on day 1 was significantly suppressed in the desflurane group compared with the control group (P = 0.006). Moreover, immunoblotting analysis of synaptic GluR1 expression revealed that desflurane exposure significantly suppressed GluR1 delivery to the synapses after IA training. CONCLUSION:Exposure to a relatively high concentration of desflurane caused reversible learning and memory impairment in young adult rats associated with suppression of GluR1 delivery to the synapses in the hippocampus.
journal_name
BMC Anesthesioljournal_title
BMC anesthesiologyauthors
Tojo A,Uchimoto K,Inagawa G,Goto Tdoi
10.1186/s12871-019-0793-8subject
Has Abstractpub_date
2019-07-04 00:00:00pages
119issue
1issn
1471-2253pii
10.1186/s12871-019-0793-8journal_volume
19pub_type
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
doi:10.1186/1471-2253-14-93
更新日期:2014-10-17 00:00:00
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journal_title:BMC anesthesiology
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journal_title:BMC anesthesiology
pub_type: 杂志文章
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pub_type: 临床试验,杂志文章
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pub_type: 杂志文章,随机对照试验
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12871-016-0254-6
更新日期:2016-10-21 00:00:00
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pub_type: 临床试验,杂志文章
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pub_type: 杂志文章,多中心研究
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更新日期:2018-07-18 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
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更新日期:2016-08-11 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
doi:10.1186/s12871-015-0159-9
更新日期:2015-12-15 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12871-015-0110-0
更新日期:2015-09-30 00:00:00
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pub_type: 杂志文章
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更新日期:2019-02-23 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
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更新日期:2017-12-01 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章,随机对照试验
doi:10.1186/s12871-019-0928-y
更新日期:2020-01-08 00:00:00
abstract:BACKGROUND:The role of N-terminal pro-B-type natriuretic peptide (NT-pro-BNP) as a prognostic factor in patients admitted to the intensive care unit (ICU) is not yet fully established. We aimed to determine whether NT-pro-BNP is predictive of ICU mortality in a multicenter cohort of critically ill patients. METHODS:A ...
journal_title:BMC anesthesiology
pub_type: 杂志文章,多中心研究
doi:10.1186/1471-2253-14-16
更新日期:2014-03-10 00:00:00
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journal_title:BMC anesthesiology
pub_type: 杂志文章
doi:10.1186/1471-2253-10-12
更新日期:2010-07-29 00:00:00