Evidence map›Paper›PMID 33840225›Full record

ArticleStroke2021

Divergent Functions of Tissue-Resident and Blood-Derived Macrophages in the Hemorrhagic Brain.

Che-Feng Chang, Brittany A Goods, Michael H Askenase, Hannah E Beatty, Artem Osherov, Jonathan H DeLong, Matthew D Hammond, Jordan Massey, Margaret Landreneau, J Christopher Love and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Stroke, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Role of macrophages in neuroimmune regulation.Frontiers in immunology · 2025
    Review
  9. Review
  10. Role of microglia after subarachnoid hemorrhage.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Review
  11. Review
  12. Article
  13. Article
  14. Characteristics of activation of monocyte-derived macrophages versus microglia after mouse experimental intracerebral hemorrhage.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2023
    Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. The Fate of Erythrocytes after Cerebral Hemorrhage.Translational stroke research · 2022
    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

11 authors at 4 institutions in 4 countries.

Che-Feng ChangDepartment and Graduate Institute of Physiology, National Taiwan University College of Medicine, Taipei (C.-F.C.).
Brittany A GoodsDepartment of Biological Engineering, Koch Institute for Integrative Cancer Research at Massachusetts Institute of Technology, Cambridge (B.A.G., J.C.L.).
Michael H AskenaseDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Hannah E BeattyDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Artem OsherovDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Jonathan H DeLongDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Matthew D HammondDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Jordan MasseyDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Margaret LandreneauDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
J Christopher LoveDepartment of Biological Engineering, Koch Institute for Integrative Cancer Research at Massachusetts Institute of Technology, Cambridge (B.A.G., J.C.L.).
Lauren H SansingDepartments of Neurology (C.-F.C., M.H.A., H.E.B., A.O., J.H.D., M.D.H., J.M., M.L., L.H.S.), Yale University School of Medicine, New Haven, CT.
Mahindra and Mahindra Limited (India) · INYale University · USMassachusetts Institute of Technology · USNational Taiwan University · TW

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Efferocytosis and the resolution of inflammation after intracerebral hemorrhageR01NS095993 · NINDS · YALE UNIVERSITY · PI SANSING, LAUREN H · 2016 to 2020
$1.8M
NCATS NIH HHS UL1 TR001863NINDS NIH HHS R01 NS095993
6 · The paper itself

Abstract

Background and Purpose: Brain tissue-resident microglia and monocyte-derived macrophages (MDMs) are innate immune cells that contribute to the inflammatory response, phagocytosis of debris, and tissue repair after injury. We have previously reported that both microglia and MDMs transition from proinflammatory to reparative phenotypes over days after an intracerebral hemorrhage (ICH). However, their individual functional properties in the brain remain largely unknown. Here we characterized the differences between microglia and MDMs and further elucidate their distinct activation states and functional contributions to the pathophysiology and recovery after ICH. Methods: Autologous blood injection was used to model ICH in mice. Longitudinal transcriptomic analyses on isolated microglia and MDMs from mice at days 1, 3, 7 and 10 after ICH and naive controls identified core transcriptional programs that distinguish these cells. Imaging flow cytometry and in vivo phagocytosis assays were used to study phagocytic ability of microglia and MDMs. Antigen presentation was evaluated by ovalbumin-OTII CD4 T-cell proliferation assays with bone marrow–derived macrophages and primary microglia cultures. Results: MDMs had higher phagocytic activity and higher erythrophagocytosis in the ICH brain. Differential gene expression revealed distinct transcriptional signatures in the MDMs and microglia after ICH. MDMs had higher expression of MHCII (major histocompatibility complex class II) genes than microglia at all time points and greater ability to induce antigen-specific T-cell proliferation. Conclusions: The different ontogeny of microglia and MDMs lead to divergent responses and functions in the inflamed brain as these 2 cell populations differ in phagocytic functions and antigen-presenting capabilities in the brain after ICH.

Indexed as

AnimalsBrainCell ProliferationDisease Models, AnimalIntracranial HemorrhagesMacrophagesMiceMicrogliaPhagocytosiscerebral hemorrhageimmunity, innatemacrophagesmicrogliaphagocytosis

Identifiers

PMID33840225
PMCPMC8085165
OpenAlexW3154204662

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.