Evidence map›Paper›PMID 23840911›Full record

ArticlePloS one2013

Commercially available angiotensin II At₂ receptor antibodies are nonspecific.

Roman Hafko, Sonia Villapol, Regina Nostramo, Aviva Symes, Esther L Sabban, Tadashi Inagami, Juan M Saavedra

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 82 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. The Renin Angiotensin System as a Therapeutic Target in Traumatic Brain Injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. The Angiotensin ATPharmacological reviews · 2022
    Review
  15. Higher Angiotensin II Type 1 Receptor Levels and Activity in the Postmortem Brains of Older Persons with Alzheimer's Dementia.The journals of gerontology. Series A, Biological sciences and medical sciences · 2022
    Article
  16. Article
  17. Review
  18. Article
  19. Review
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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

7 authors at 6 institutions in 1 country.

Roman HafkoSection on Pharmacology, Division of Intramural Research Programs, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, United States of America.
Sonia Villapol
Regina Nostramo
Aviva Symes
Esther L Sabban
Tadashi Inagami
Juan M Saavedra
New York Medical College · USCenter for Neuroscience and Regenerative Medicine · USNational Institute of Mental Health · USNational Institutes of Health · USUniformed Services University of the Health Sciences · USVanderbilt University · US

Funding

ROLE OF NEUROPEPTIDES AND BIOGENIC AMINES IN STRESS AND BRAIN ISCHEMIAZ01MH002762 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI SAAVEDRA, JUAN M · 1997 to 2008
$4.6M
Angiotensin Receptor AT1 in Vascular Cell Control.R37HL058205 · NHLBI · VANDERBILT UNIVERSITY · PI INAGAMI, TADASHI · 2001 to 2010
$3.6M
ANGIOTENSIN RECEPTOR AT1 IN VASCULAR CELL CONTROLR01HL058205 · NHLBI · VANDERBILT UNIVERSITY · PI INAGAMI, TADASHI · 1997 to 2000
$437k
Intramural NIH HHS Z01 MH002762NHLBI NIH HHS HL58205NHLBI NIH HHS R01 HL058205NHLBI NIH HHS R37 HL058205NIMH NIH HHS MH002762-16
6 · The paper itself

Abstract

Commercially available angiotensin II At₂ receptor antibodies are widely employed for receptor localization and quantification, but they have not been adequately validated. In this study, we characterized three commercially available At₂ receptor antibodies: 2818-1 from Epitomics, sc-9040 from Santa Cruz Biotechnology, Inc., and AAR-012 from Alomone Labs. Using western blot analysis the immunostaining patterns observed were different for every antibody tested, and in most cases consisted of multiple immunoreactive bands. Identical immunoreactive patterns were present in wild-type and At₂ receptor knockout mice not expressing the target protein. In the mouse brain, immunocytochemical studies revealed very different cellular immunoreactivity for each antibody tested. While the 2818-1 antibody reacted only with endothelial cells in small parenchymal arteries, the sc-9040 antibody reacted only with ependymal cells lining the cerebral ventricles, and the AAR-012 antibody reacted only with multiple neuronal cell bodies in the cerebral cortex. Moreover, the immunoreactivities were identical in brain tissue from wild-type or At₂ receptor knockout mice. Furthermore, in both mice and rat tissue extracts, there was no correlation between the observed immunoreactivity and the presence or absence of At₂ receptor binding or gene expression. We conclude that none of these commercially available At₂ receptor antibodies tested met the criteria for specificity. In the absence of full antibody characterization, competitive radioligand binding and determination of mRNA expression remain the only reliable approaches to study At₂ receptor expression.

Indexed as

Antibody SpecificityAnimalsAntibodiesBlotting, WesternBrainBrain ChemistryImmunohistochemistryMaleMiceMice, Inbred C57BLMice, KnockoutRatsRats, Sprague-DawleyReceptors, AngiotensinRNA, MessengerAntibodiesReceptors, AngiotensinRNA, Messenger

Identifiers

PMID23840911
PMCPMC3698141
OpenAlexW1924315749

What OpenQuestion holds

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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.