Cited by 155Nitric Oxide and Endothelin EffectsBarrier Structure and Function StudiesAcute Ischemic Stroke Management

NOX4-dependent neuronal autotoxicity and BBB breakdown explain the superior sensitivity of the brain to ischemic damage

Open access
Casas, Ana I., Geuss, Eva, Kleikers, Pamela W. M., Mencl, Stine, Herrmann, Alexander M., Buendia, Izaskun, Egea, Javier, Meuth, Sven G. +3 more·2017·Proceedings of the National Academy of Sciences

Abstract

Ischemic injury represents the most frequent cause of death and disability, and it remains unclear why, of all body organs, the brain is most sensitive to hypoxia. In many tissues, type 4 NADPH oxidase is induced upon ischemia or hypoxia, converting oxygen to reactive oxygen species. Here, we show in mouse models of ischemia in the heart, brain, and hindlimb that only in the brain does NADPH oxidase 4 (NOX4) lead to ischemic damage. We explain this distinct cellular distribution pattern through cell-specific knockouts. Endothelial NOX4 breaks down the BBB, while neuronal NOX4 leads to neuronal autotoxicity. Vascular smooth muscle NOX4, the common denominator of ischemia within all ischemic organs, played no apparent role. The direct neuroprotective potential of pharmacological NOX4 inhibition was confirmed in an ex vivo model, free of vascular and BBB components. Our results demonstrate that the heightened sensitivity of the brain to ischemic damage is due to an organ-specific role of NOX4 in blood-brain-barrier endothelial cells and neurons. This mechanism is conserved in at least two rodents and humans, making NOX4 a prime target for a first-in-class mechanism-based, cytoprotective therapy in the unmet high medical need indication of ischemic stroke.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.1705034114

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Casas, A. I., Geuss, E., Kleikers, P. W. M., Mencl, S., Herrmann, A. M., Buendia, I., Egea, J., Meuth, S. G., Lopez, M. G., Kleinschnitz, C., & Schmidt, H. H. H. W.
Affiliations
  • Maastricht University (NL)
  • Universitätsklinikum Würzburg (DE)
  • Essen University Hospital (DE)
  • University of Münster (DE)
  • Instituto Teofilo Hernando, Department of Pharmacology, School of Medicine, Universidad Autónoma de Madrid, 28029 Madrid, Spain;
  • Hospital Universitario de La Princesa (ES)
Corresponding author
  • Kleinschnitz, Christoph
  • Schmidt, Harald H. H. W.
Venue
Proceedings of the National Academy of Sciences
Published
2017-10-31
Volume
114
Issue
46
Pages
12315-12320
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2766223740
Cited by
152
References
41
Citations by year
2026: 8 · 2025: 13 · 2024: 16 · 2023: 15 · 2022: 19 · 2021: 28 · 2020: 27 · 2019: 17 · 2018: 9
FWCI
10.73
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (submittedVersion, cc-by-nc-nd)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, other-oa)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Funders
  • European Research Council. Advanced Investigator Grant (294683 RedMed)
  • Deutsche Forschungsgemeinschaft (SFB688)
  • Fondo Investigaciones Sanitarias (CP14/00008, PI6/00735)
  • Ministerio Economia y Competencia Español (SAF2015-63935R)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
NOX4, NADPH oxidase, blood-brain barrier disruption, cerebral ischemia, ischemic stroke, hypoxia, reactive oxygen species, endothelial cells, vascular smooth muscle cells, neuroprotection
MeSH terms
NADPH Oxidase 4, Animals, Benzoxazoles, Blood-Brain Barrier, Brain, Brain Ischemia, Enzyme Inhibitors, Female, Femoral Artery, Gene Expression Regulation, Hindlimb, Humans, Male, Neurons, Organ Specificity, Pyrazoles, Pyridones, Triazoles, Signal Transduction, Myocardial Ischemia, Mice, Knockout, Neuroprotective Agents, Endothelial Cells, Mice, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review