Evidence map›Paper›PMID 28323022›Full record

ArticleNeurobiology of disease2017

Astrocyte heme oxygenase-1 reduces mortality and improves outcome after collagenase-induced intracerebral hemorrhage.

Jing Chen-Roetling, Pramod Kamalapathy, Yang Cao, Wei Song, Hyman M Schipper, Raymond F Regan

Open access · greenAbstract read
In one paragraph

Article in Neurobiology of disease, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.7field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 83 citations in OpenAlex.

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  9. The In Vitro Enhancement of Retinal Cell Viability via mInternational journal of molecular sciences · 2024
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  20. The Specific Role of Reactive Astrocytes in Stroke.Frontiers in cellular neuroscience · 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

6 authors at 3 institutions in 2 countries.

Jing Chen-RoetlingDepartment of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
Pramod KamalapathyDepartment of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
Yang CaoDepartment of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
Wei SongLady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada.
Hyman M SchipperLady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada; Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada.
Raymond F ReganDepartment of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA. Electronic address: Raymond.Regan@jefferson.edu.
Thomas Jefferson University · USJewish General Hospital · CAMcGill University · CA

Funding

Protective Effect of Astrocyte Heme Oxygenase-1 after Intracerebral HemorrhageR01NS095205 · NINDS · UNIVERSITY OF MARYLAND BALTIMORE · PI REGAN, RAYMOND F · 2016 to 2020
$1.7M
Protective Effect of Hemin Preconditioning after Intracerebral HemorrhageR01NS079500 · NINDS · THOMAS JEFFERSON UNIVERSITY · PI REGAN, RAYMOND F · 2012 to 2015
$1.3M
NINDS NIH HHS R01 NS079500NINDS NIH HHS R01 NS095205
6 · The paper itself

Abstract

Pharmacotherapies that increase CNS expression of heme oxygenase-1 (HO-1) and other antioxidant proteins have improved outcome in experimental models of spontaneous intracerebral hemorrhage (ICH). In order to more specifically investigate the relationship between HO-1 and ICH outcome, mice expressing human HO-1 driven by the glial fibrillary acidic protein (GFAP) promoter (GFAP·HMOX1 mice) were tested in a model of in situ parenchymal hemorrhage. Injection of collagenase into the striata of wild-type (WT) mice resulted in a 26.3% mortality rate, with deaths equally distributed between males and females. Mortality was reduced to 4.48% in GFAP·HMOX1 mice. Cell viability in the injected striata of surviving WT mice was reduced by about half at one week and was significantly increased in transgenics; this benefit persisted over a 22day observation period. Cell counts guided by design-based stereology indicated loss of ~40% of neurons in WT hemorrhagic striata at one week, which was decreased by half in transgenics; no significant differences in microglia or astrocyte numbers were observed. Blood-brain barrier disruption and short-term neurological deficits were also mitigated in GFAP·HMOX1 mice, but long-term outcome did not differ from that of WT survivors. These results suggest that astrocyte HO-1 overexpression provides robust neuroprotection after acute intracerebral hemorrhage. Further investigation of drug or genetic therapies that selectively increase astrocyte HO-1 is warranted.

Indexed as

AnimalsAstrocytesBlood-Brain BarrierCapillary PermeabilityCell SurvivalCerebral HemorrhageCollagenasesCorpus StriatumDisease Models, AnimalFemaleGlial Fibrillary Acidic ProteinHeme Oxygenase-1HumansMaleMice, TransgenicNeuronsCollagenasesGlial Fibrillary Acidic ProteinHeme Oxygenase-1HMOX1 protein, humanGliaIntracerebral hemorrhageNrf2StrokeSubarachnoid hemorrhage

Identifiers

PMID28323022
PMCPMC5604234
OpenAlexW2595455629

What OpenQuestion holds

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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.