Evidence map›Paper›PMID 21552296›Full record

ReviewActa pharmacologica Sinica2011

Aquaporin-4: orthogonal array assembly, CNS functions, and role in neuromyelitis optica.

Alan S Verkman, Julien Ratelade, Andrea Rossi, Hua Zhang, Lukmanee Tradtrantip

Open access · bronzeAbstract readReview
In one paragraph

Review in Acta pharmacologica Sinica, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
3.3field-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

51 citing papers in PubMed, 1 synthesis or guideline pooled it, 102 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Label-Free Molecular Characterization of Protein Aggregates in Differentiated Astrocytes.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Induction of immune tolerance in NMOSD and MOGAD.Therapeutic advances in neurological disorders · 2025
    Review
  10. Review
  11. Article
  12. Review
  13. MOG CNS Autoimmunity and MOGAD.Neurology(R) neuroimmunology & neuroinflammation · 2024
    Review
  14. The glymphatic system and cerebral small vessel disease.Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association · 2024
    Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. T cell deletional tolerance restricts AQP4 but not MOG CNS autoimmunity.Proceedings of the National Academy of Sciences of the United States of America · 2023
    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

5 authors at 1 institution in 1 country.

Alan S VerkmanDepartment of Medicine, University of California, San Francisco, CA 94143-0521, USA. Alan.Verkman@ucsf.edu
Julien Ratelade
Andrea Rossi
Hua Zhang
Lukmanee Tradtrantip
University of California, San Francisco · US

Funding

SynthesisP30DK072517 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2005 to 2022
$18.1M
Functional Role of Aquaporins in Eye PhysiologyR01EY013574 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2002 to 2022
$7.6M
MECHANISMS OF WATER TRANSPORT IN RENAL EPITHELIAR37DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1999 to 2008
$4.2M
Application of Novel Optical Methods to Cell DynamicsR37EB000415 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2007 to 2016
$4.1M
Role of ASL and Airway Glands in CF Lung DiseaseR01HL073856 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2003 to 2010
$3.1M
PHYSIOLOGY AND MOLECULAR BIOLOGY OF LUNG WATER TRANSPORTR01HL059198 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1998 to 2007
$2.2M
WATER AND NON-ELECTROLYTE TRANSPORT IN RENAL VESICLESR01DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1986 to 2014
$1.4M
NEI NIH HHS R01 EY013574NHLBI NIH HHS R01 HL059198NHLBI NIH HHS R01 HL073856NIBIB NIH HHS R37 EB000415NIDDK NIH HHS P30 DK072517NIDDK NIH HHS R01 DK035124NIDDK NIH HHS R37 DK035124
6 · The paper itself

Abstract

Aquaporin-4 (AQP4) is a water-selective transporter expressed in astrocytes throughout the central nervous system, as well as in kidney, lung, stomach and skeletal muscle. The two AQP4 isoforms produced by alternative spicing, M1 and M23 AQP4, form heterotetramers that assemble in cell plasma membranes in supramolecular structures called orthogonal arrays of particles (OAPs). Phenotype analysis of AQP4-null mice indicates the involvement of AQP4 in brain and spinal cord water balance, astrocyte migration, neural signal transduction and neuroinflammation. AQP4-null mice manifest reduced brain swelling in cytotoxic cerebral edema, but increased brain swelling in vasogenic edema and hydrocephalus. AQP4 deficiency also increases seizure duration, impairs glial scarring, and reduces the severity of autoimmune neuroinflammation. Each of these phenotypes is likely explicable on the basis of reduced astrocyte water permeability in AQP4 deficiency. AQP4 is also involved in the neuroinflammatory demyelinating disease neuromyelitis optica (NMO), where autoantibodies (NMO-IgG) targeting AQP4 produce astrocyte damage and inflammation. Mice administered NMO-IgG and human complement by intracerebral injection develop characteristic NMO lesions with neuroinflammation, demyelination, perivascular complement deposition and loss of glial fibrillary acidic protein and AQP4 immunoreactivity. Our findings suggest the potential utility of AQP4-based therapeutics, including small-molecule modulators of AQP4 water transport function for therapy of brain swelling, injury and epilepsy, as well as small-molecule or monoclonal antibody blockers of NMO-IgG binding to AQP4 for therapy of NMO.

Indexed as

Aquaporin 4Drug DiscoveryAmino Acid SequenceAnimalsAntibodies, MonoclonalCentral Nervous SystemHigh-Throughput Screening AssaysHumansMolecular Sequence DataNeuromyelitis OpticaProtein BindingProtein MultimerizationSmall Molecule LibrariesAntibodies, MonoclonalAquaporin 4Small Molecule Libraries

Identifiers

PMID21552296
PMCPMC3601948
OpenAlexW2083958404

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.