Evidence map›Paper›PMID 32276637›Full record

ArticleJournal of neuroinflammation2020

Iron overload contributes to general anaesthesia-induced neurotoxicity and cognitive deficits.

Jing Wu, Jian-Jun Yang, Yan Cao, Huihui Li, Hongting Zhao, Shuofei Yang, Kuanyu Li

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
8.3field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 133 citations in OpenAlex.

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21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Jing WuJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
Jian-Jun YangDepartment of Anesthesiology, The first Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, China.
Yan CaoJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
Huihui LiJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
Hongting ZhaoJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
Shuofei YangDepartment of Vascular Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China. doctor_yangshuofei@163.com.
Kuanyu LiJiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, 22 Hankou Road, Nanjing, 210093, China. likuanyu@nju.edu.cn.
Nanjing University · CNFirst Affiliated Hospital of Zhengzhou University · CNRenji Hospital · CN

Funding

National Natural Science Foundation of China 31871201National Natural Science Foundation of China 81700423National Natural Science Foundation of China 81873526
6 · The paper itself

Abstract

backgroundIncreasing evidence suggests that multiple or long-time exposure to general anaesthesia (GA) could be detrimental to cognitive development in young subjects and might also contribute to accelerated neurodegeneration in the elderly. Iron is essential for normal neuronal function, and excess iron in the brain is implicated in several neurodegenerative diseases. However, the role of iron in GA-induced neurotoxicity and cognitive deficits remains elusive.

methodsWe used the primary hippocampal neurons and rodents including young rats and aged mice to examine whether GA impacted iron metabolism and whether the impact contributed to neuronal outcomes. In addition, a pharmacological suppression of iron metabolism was performed to explore the molecular mechanism underlying GA-mediated iron overload in the brain.

resultsOur results demonstrated that GA, induced by intravenous ketamine or inhalational sevoflurane, disturbed iron homeostasis and caused iron overload in both in vitro hippocampal neuron culture and in vivo hippocampus. Interestingly, ketamine- or sevoflurane-induced cognitive deficits, very likely, resulted from a novel iron-dependent regulated cell death, ferroptosis. Notably, iron chelator deferiprone attenuated the GA-induced mitochondrial dysfunction, ferroptosis, and further cognitive deficits. Moreover, we found that GA-induced iron overload was activated by NMDAR-RASD1 signalling via DMT1 action in the brain.

conclusionWe conclude that disturbed iron metabolism may be involved in the pathogenesis of GA-induced neurotoxicity and cognitive deficits. Our study provides new vision for consideration in GA-associated neurological disorders.

Indexed as

Anesthesia, GeneralAnesthetics, GeneralAnimalsHippocampusIronIron OverloadKetamineMaleMiceMice, Inbred C57BLNeuronsNeurotoxicity SyndromesPostoperative Cognitive ComplicationsRatsRats, Sprague-DawleySevofluraneAnesthetics, GeneralIronKetamineSevofluraneCognitionFerroptosisGeneral anaesthesiaIronNeurotoxicity

Identifiers

PMID32276637
PMCPMC7149901
OpenAlexW3015570469

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.