Evidence map›Paper›PMID 27577570›Full record

ArticleJournal of neuroinflammation2016

Mannan binding lectin-associated serine protease-2 (MASP-2) critically contributes to post-ischemic brain injury independent of MASP-1.

Franca Orsini, Elvina Chrysanthou, Thomas Dudler, W Jason Cummings, Minoru Takahashi, Teizo Fujita, Gregory Demopulos, Maria-Grazia De Simoni, Wilhelm Schwaeble

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
3.8field-weighted citation impact, top 7% 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

33 citing papers in PubMed, 54 citations in OpenAlex.

  1. Article
  2. Complement activation in kidney transplantation.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. β2 glycoprotein I participates in phagocytosis of apoptotic neurons and in vascular injury in experimental brain stroke.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Article
  16. Pathophysiologic mechanisms of cerebral endotheliopathy and stroke due to Sars-CoV-2.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
    Review
  17. Article
  18. Article
  19. Article
  20. Mannose-binding lectin has a direct deleterious effect on ischemic brain microvascular endothelial cells.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
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

9 authors at 5 institutions in 4 countries.

Franca OrsiniDepartment of Neuroscience, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, via La Masa, 19-20156, Milan, Italy.
Elvina ChrysanthouDepartment of Neuroscience, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, via La Masa, 19-20156, Milan, Italy.
Thomas DudlerOMEROS Corporation, 201 Elliott Ave W, Seattle, WA, 98119, USA.
W Jason CummingsOMEROS Corporation, 201 Elliott Ave W, Seattle, WA, 98119, USA.
Minoru TakahashiFukushima Prefectural General Hygiene Institute and Department of Immunology, Fukushima Medical University, 1 Hikariga-oka, Fukushima City, 960-1295, Japan.
Teizo FujitaFukushima Prefectural General Hygiene Institute and Department of Immunology, Fukushima Medical University, 1 Hikariga-oka, Fukushima City, 960-1295, Japan.
Gregory DemopulosOMEROS Corporation, 201 Elliott Ave W, Seattle, WA, 98119, USA.
Maria-Grazia De SimoniDepartment of Neuroscience, IRCCS-Istituto di Ricerche Farmacologiche Mario Negri, via La Masa, 19-20156, Milan, Italy. desimoni@marionegri.it.
Wilhelm SchwaebleDepartment of Infection, Immunity and Inflammation, University of Leicester, MSB, University Road, Leicester, LE1 9HN, UK. ws5@le.ac.uk.
Omeros Corporation (United States) · USFukushima Medical University · JPIstituti di Ricovero e Cura a Carattere Scientifico · ITMario Negri Institute for Pharmacological Research · ITUniversity of Leicester · GB

Funding

Medical Research Council G0700859
6 · The paper itself

Abstract

backgroundComplement activation via the lectin activation pathway (LP) has been identified as the key mechanism behind post-ischemic tissue inflammation causing ischemia-reperfusion injury (IRI) which can significantly impact the clinical outcome of ischemic disease. This work defines the contributions of each of the three LP-associated enzymes-mannan-binding lectin-associated serine protease (MASP)-1, MASP-2, and MASP-3-to ischemic brain injury in experimental mouse models of stroke.

methodsFocal cerebral ischemia was induced in wild-type (WT) mice or mice deficient for defined complement components by transient middle cerebral artery occlusion (tMCAO) or three-vessel occlusion (3VO). The inhibitory MASP-2 antibody was administered systemically 7 and 3.5 days before and at reperfusion in WT mice in order to assure an effective MASP-2 inhibition throughout the study. Forty-eight hours after ischemia, neurological deficits and infarct volumes were assessed. C3 deposition and microglia/macrophage morphology were detected by immunohistochemical, immunofluorescence, and confocal analyses.

resultsMASP-2-deficient mice (MASP-2(-/-)) and WT mice treated with an antibody that blocks MASP-2 activity had significantly reduced neurological deficits and histopathological damage after transient ischemia and reperfusion compared to WT or control-treated mice. Surprisingly, MASP-1/3(-/-) mice were not protected, while mice deficient in factor B (fB(-/-)) showed reduced neurological deficits compared to WT mice. Consistent with behavioral and histological data, MASP-2(-/-) had attenuated C3 deposition and presented with a significantly higher proportion of ramified, surveying microglia in contrast to the hypertrophic pro-inflammatory microglia/macrophage phenotype seen in the ischemic brain tissue of WT mice.

conclusionsThis work demonstrates the essential role of the low-abundant MASP-2 in the mediation of cerebral ischemia-reperfusion injury and demonstrates that targeting MASP-2 by an inhibitory therapeutic antibody markedly improved the neurological and histopathological outcome after focal cerebral ischemia. These results contribute to identifying the key lectin pathway component driving brain tissue injury following cerebral ischemia and call for a revision of the presently widely accepted view that MASP-1 is an essential activator of the lectin pathway effector component MASP-2.

Indexed as

AnimalsBrain InjuriesBrain IschemiaMaleMannose-Binding Protein-Associated Serine ProteasesMiceMice, Inbred C57BLMice, KnockoutMannose-Binding Protein-Associated Serine ProteasesMASP-1 protein, mouseMASP-2 protein, mouseCerebral ischemiaComplement systemInflammationLectin pathwayStroke

Identifiers

PMID27577570
PMCPMC5006610
OpenAlexW2510286362

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.