Evidence map›Paper›PMID 21044218›Full record

ArticleMicrocirculation (New York, N.Y. : 1994)2010

Mechanisms underlying the cerebral microvascular responses to angiotensin II-induced hypertension.

Shantel A Vital, Satoshi Terao, Mutsumi Nagai, D Neil Granger

Open access · greenAbstract read
In one paragraph

Article in Microcirculation (New York, N.Y. : 1994), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

45 citing papers in PubMed, 73 citations in OpenAlex.

  1. Ang II-mediated effects on BBB integrity in psychiatric and neurological disorders.Progress in neuro-psychopharmacology & biological psychiatry · 2026
    Review
  2. Review
  3. Review
  4. Review
  5. Immune and inflammatory mechanisms in hypertension.Nature reviews. Cardiology · 2024
    Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Natural Killer Cells Are Present in Rag1Translational stroke research · 2022
    Article
  13. Role of the central renin‑angiotensin system in hypertension (Review).International journal of molecular medicine · 2021
    Review
  14. Induced dysregulation of ACE2 by SARS-CoV-2 plays a key role in COVID-19 severity.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2021
    Review
  15. Oxidative Stress and the Role of NADPH Oxidase in Glaucoma.Antioxidants (Basel, Switzerland) · 2021
    Review
  16. Review
  17. Article
  18. COVID's Razor: RAS Imbalance, the Common Denominator Across Disparate, Unexpected Aspects of COVID-19.Diabetes, metabolic syndrome and obesity : targets and therapy · 2020
    Review
  19. Article
  20. 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

4 authors at 1 institution in 1 country.

Shantel A VitalDepartment of Molecular & Cellular Physiology Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA.
Satoshi Terao
Mutsumi Nagai
D Neil Granger
Louisiana State University Health Sciences Center Shreveport · US

Funding

TRANSCAPILLARY FLUID EXCHANGER01HL026441 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI GRANGER, D. NEIL · 1985 to 2013
$4.0M
NHLBI NIH HHS R01 HL026441NHLBI NIH HHS R01 HL2644-29
6 · The paper itself

Abstract

Angiotensin II (AngII) and AngII type-1 receptors (AT1r) have been implicated in the pathogenesis of hypertension and ischemic stroke. The objectives of this study was to determine if/how chronic AngII administration affects blood-brain barrier (BBB) function and blood cell adhesion in the cerebral microvasculature. AngII-loaded osmotic pumps were implanted in wild type (WT) and mutant mice. Leukocyte and platelet adhesion were monitored in cerebral venules by intravital microscopy and BBB permeability detected by Evans blue leakage. AngII (two week) infusion increased blood pressure in WT mice. This was accompanied by an increased BBB permeability and a high density of adherent leukocytes and platelets. AT1r (on the vessel wall, but not on blood cells) was largely responsible for the microvascular responses to AngII. Immunodeficient (Rag-1(-/-) ) mice exhibited blunted blood cell recruitment responses without a change in BBB permeability. A similar protection pattern was noted in RANTES(-/-) and P-selectin(-/-) mice, with bone marrow chimeras (blood cell deficiency only) yielding responses comparable to the respective knockouts. These findings implicate AT1r in the microvascular dysfunction associated with AngII-induced hypertension and suggest that immune cells and blood cell-associated RANTES and P-selectin contribute to the blood cell recruitment, but not the BBB failure, elicited by AngII.

Indexed as

Angiotensin IIAnimalsBlood-Brain BarrierCell AdhesionCerebrovascular CirculationChemokine CCL5Homeodomain ProteinsHypertensionLeukocytesMiceMice, Inbred C57BLMice, KnockoutMicroscopy, VideoMicrovesselsPlatelet AdhesivenessP-SelectinAngiotensin IICcl5 protein, mouseChemokine CCL5Homeodomain ProteinsP-SelectinRAG-1 proteinReceptor, Angiotensin, Type 1

Identifiers

PMID21044218
PMCPMC3058857
OpenAlexW2118643283

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.