Evidence map›Paper›PMID 19806476›Full record

ArticleNeurocritical care2010

Arginine-vasopressin V1 but not V2 receptor antagonism modulates infarct volume, brain water content, and aquaporin-4 expression following experimental stroke.

Xiaoqin Liu, Shin Nakayama, Mahmood Amiry-Moghaddam, Ole Petter Ottersen, Anish Bhardwaj

Registry-linked trialAbstract read
PubMed Publisher
In one paragraph

Article in Neurocritical care, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03000283 (Conivaptan for the Reduction of Cerebral Edema in Intracerebral Hemorrhage- A Safety and Tolerability Study), which is not on this map. Cited by 37 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 2 pooled it
1.7field-weighted citation impact, top 16% 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.

NCT03000283 phase1completednot on this mapstarted 2017, after this paper: background citation

Conivaptan for the Reduction of Cerebral Edema in Intracerebral Hemorrhage- A Safety and Tolerability Study

TypeinterventionalSponsorJesse CorryRan2017 to 2019Enrolled7ConditionsCerebral Hemorrhage, Cerebral Edema, Intracerebral Hemorrhage, StrokeArmsConivaptan
3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 2 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Review
  6. Review
  7. Review
  8. Emerging therapeutic targets for cerebral edema.Expert opinion on therapeutic targets · 2021
    Review
  9. Vasopressin VJournal of neurotrauma · 2020
    Article
  10. Article
  11. Review
  12. Evaluating the involvement of cerebral microvascular endothelial NaJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2019
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. 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

5 authors at 4 institutions in 3 countries.

Xiaoqin LiuDepartment of Anesthesiology and Peri-Operative Medicine, Oregon Health & Science University, Portland, OR, USA.
Shin Nakayama
Mahmood Amiry-Moghaddam
Ole Petter Ottersen
Anish Bhardwaj
University of Oslo · NONanjing Medical University · CNNeurological Surgery · USOregon Health & Science University · US

Funding

Osmotherapy in Acute Ischemic StrokeR01NS046379 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI BHARDWAJ, ANISH · 2004 to 2008
$1.8M
NINDS NIH HHS NS046379
6 · The paper itself

Abstract

backgroundAquaporin-4 (AQP4) plays an important role in the evolution of ischemia-evoked cerebral edema. Experimental studies have also demonstrated anti-edema effects of arginine-vasopressin (AVP) antagonists. In a well-characterized murine model of ischemic stroke, we tested the hypotheses that treatment with selective AVP V(1) but not V(2) receptor antagonist (1) attenuates injury volume and ischemia-evoked cerebral edema; and (2) modulates ischemia-evoked AQP4 expression.

methodsIsoflurane-anesthetized adult male C57bl/6 mice were subjected to 60 min of middle cerebral artery occlusion (MCAO) by the intraluminal suture technique. Adequacy of MCAO and reperfusion was monitored with laser-Doppler flowmetry over the ipsilateral parietal cortex. Mice were treated with intracerebroventricular injection of selective AVP V(1) and V(2) receptor antagonist or control vehicle (0.9% saline). Infarct volume (tetrazolium staining), cerebral edema (wet-to-dry ratios) and AQP4 protein expression (immunoblotting) were determined in different treatment groups in separate sets of experiments at 24 h of reperfusion.

resultsInfarct volume (percentage of contralateral structure; mean +/- SEM) was significantly attenuated in mice treated with 500 ng V(1) receptor antagonist as well as at a dose of 1000 ng compared to controls. However, there was no difference in infarct volume following treatment with 1000 ng V(2) antagonist as compared to controls. Water content in the ischemic hemisphere was significantly attenuated with V(1) receptor antagonist (1000 ng) but not with V(2) receptor antagonist as compared to controls. Treatment with AVP V(1) receptor antagonist (1000 ng) but not V(2) receptor antagonist, significantly upregulated AQP4 protein expression (% beta-actin) compared to saline-treated mice in ipsilateral (ischemic) cerebral cortex.

conclusionsThese data demonstrate that following experimental stroke AVP V(1) receptor antagonism: (1) attenuates injury volume and ischemia-evoked cerebral edema; (2) modulates AQP4 expression; and (3) may serve as an important therapeutic target for neuroprotection and ischemia-evoked cerebral edema.

Indexed as

Antidiuretic Hormone Receptor AntagonistsAnimalsAquaporin 4Arginine VasopressinBlotting, WesternBrainBrain EdemaGene Expression RegulationInfarction, Middle Cerebral ArteryIschemic Attack, TransientMaleMiceMice, Inbred C57BLReceptors, VasopressinAntidiuretic Hormone Receptor AntagonistsAqp4 protein, mouseAquaporin 4Arginine VasopressinReceptors, Vasopressinvasopressin, 1-adamantaneacetyl-O-Et-Tyr(2)-Val(4)-aminobutyryl(6)-Arg(8,9)-vasopressin, deaminoPen(1)-O-Me-Tyr(2)-Arg(8)-

Identifiers

PMID19806476
OpenAlexW2064964532

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.