Evidence map›Paper›PMID 34551509›Full record

ArticleJournal of cerebrovascular and endovascular neurosurgery2021

Systemic macrophage depletion attenuates infarct size in an experimental mouse model of stroke.

Seung-Won Lee, Dong-Jun Song, Han-Seung Ryu, You-Sub Kim, Tae-Sun Kim, Sung-Pil Joo

Abstract read
In one paragraph

Article in Journal of cerebrovascular and endovascular neurosurgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing 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

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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

4 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Inflammatory Responses After Ischemic Stroke.Seminars in immunopathology · 2022
    Review
4 · The record

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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

6 authors.

Seung-Won LeeDepartment of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.
Dong-Jun SongDepartment of Biomedical Sciences, Chonnam National University, Gwangju, Korea.
Han-Seung RyuDepartment of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.
You-Sub KimDepartment of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.
Tae-Sun KimDepartment of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.
Sung-Pil JooDepartment of Neurosurgery, Chonnam National University Hospital and Medical School, Gwangju, Korea.

Funding

Chonnam National University 2021-2148
6 · The paper itself

Abstract

objectiveMacrophages have been shown to play important roles in various pathophysiological processes of the central nervous system via neuroinflammation, leading to an increased interest in macrophage biology. Circulating blood monocytes are among the first cells to infiltrate the brain after ischemic stroke; however, the role of innate immune cells such as monocytes and macrophages remains to be elucidated. Here, we investigated the association between blood monocytes and infarct size following ischemic stroke.

methodsWe induced stroke using a focal ischemia mouse model through middle cerebral artery suture occlusion. To deplete circulating blood monocytes, clodronate was injected intraperitoneally 24 h before the surgery. Animals were sacrificed at specified time points, and the infarct size and mRNA expression were then measured.

resultsThe clodronate-injected mice showed significantly smaller infarct size than the control mice. Immunohistochemical staining revealed that monocyte depletion significantly blocked the infiltration of macrophages and microglia. The mRNA expression levels of macrophage and microglia markers were higher in the left infarcted brain than in the right non-infarcted brain.

conclusionsIn summary, monocyte depletion reduced the infarct size and mitigated neurological deficits in mice following ischemic stroke, likely by blocking the infiltration of inflammatory cells such as macrophages and microglia.

Indexed as

Cerebral ischemiaClodronateInfarctionMacrophagesMicroglia

Identifiers

PMID34551509
PMCPMC8743821

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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.