Evidence map›Paper›PMID 37529234›Full record

ArticleFrontiers in neuroscience2023

Ultrasound stimulation of the vagal nerve improves acute septic encephalopathy in mice.

Yukio Imamura, Hisatake Matsumoto, Jun Imamura, Naoya Matsumoto, Kazuma Yamakawa, Nao Yoshikawa, Yuki Murakami, Satoko Mitani, Junichiro Nakagawa, Tomoki Yamada and 3 more

Abstract read
In one paragraph

Article in Frontiers in neuroscience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Review
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

13 authors.

Yukio ImamuraDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Hisatake MatsumotoDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Jun ImamuraMolex Corporation, Ltd., Yamato, Kanagawa, Japan.
Naoya MatsumotoDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Kazuma YamakawaDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Nao YoshikawaHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Yuki MurakamiDepartment of Hygiene and Public Health, Kansai Medical University, Osaka, Japan.
Satoko MitaniHuman Health Science, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
Junichiro NakagawaDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Tomoki YamadaDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Hiroshi OguraDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Jun OdaDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.
Takeshi ShimazuDepartment of Traumatology and Acute Critical Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Septic encephalopathy (SE) is characterized by symptoms such as coma, delirium, and cognitive dysfunction, and effective therapeutic interventions for SE remain elusive. In this study, we aimed to investigate the potential alleviating effects of vagal nerve stimulation (VNS) on SE-associated signs. To evaluate our hypothesis, we utilized a mouse model of SE induced by intraperitoneal injection of lipopolysaccharide (0.3 mg per mouse) and administered noninvasive, high-frequency ultrasound VNS. To assess the efficacy of ultrasound VNS, we measured inflammation-related molecules, including the α7 nicotinic acetylcholine receptor (α7nAChR) expression in peritoneal macrophages and plasma interleukin 1β (IL-1β) levels. Consistent with our hypothesis, SE mice exhibited reduced α7nAChR expression in macrophages and elevated IL-1β levels in the blood. Remarkably, VNS in SE mice restored α7nAChR expression and IL-1β levels to those observed in control mice. Furthermore, we evaluated the effects of VNS on survival rate, body temperature, and locomotor activity. SE mice subjected to VNS demonstrated a modest, yet significant, improvement in survival rate, recovery from hypothermia, and increased locomotor activity. To investigate the impact on the brain, we examined the hippocampus of SE mice. In control mice, VNS increased the expression of c-fos, a marker of neuronal electrical excitability, in the hippocampus. In SE mice, VNS led to the restoration of aberrant firing patterns in hippocampal neurons. Additionally, proteomic analysis of hippocampal tissue in SE mice revealed abnormal increases in two proteins, tissue factor (TF) and acyl-CoA dehydrogenase family member 9 (ACAD9), which returned to control levels following VNS. Collectively, our findings support the value of exploring the beneficial effects of ultrasound VNS on SE.

Indexed as

proteomicsseptic encephalopathyultrasoundvagal nerveα7 nicotinic acetyl choline receptor

Identifiers

PMID37529234
PMCPMC10388538

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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.