Evidence map›Paper›PMID 23283355›Full record

ArticleHypertension (Dallas, Tex. : 1979)2013

Network modeling reveals steps in angiotensin peptide processing.

John H Schwacke, John Christian G Spainhour, Jessalyn L Ierardi, Jose M Chaves, John M Arthur, Michael G Janech, Juan Carlos Q Velez

Open access · bronzeAbstract read
In one paragraph

Article in Hypertension (Dallas, Tex. : 1979), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 8% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. Review
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  14. The ins and outs of angiotensin processing within the kidney.American journal of physiology. Regulatory, integrative and comparative physiology · 2014
    Review
  15. Novel role of aminopeptidase-A in angiotensin-(1-7) metabolism post myocardial infarction.American journal of physiology. Heart and circulatory physiology · 2014
    Article
  16. Intrarenal renin-angiotensin system in regulation of glomerular function.Current opinion in nephrology and hypertension · 2014
    Review
  17. Article
  18. 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

7 authors at 1 institution in 1 country.

John H SchwackeMedical University of South Carolina, Charleston, SC 29425, USA.
John Christian G Spainhour
Jessalyn L Ierardi
Jose M Chaves
John M Arthur
Michael G Janech
Juan Carlos Q Velez
Ralph H. Johnson VA Medical Center · US

Funding

Prognostic markers in postoperative acute kidney injuryR01DK080234 · NIDDK · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI ARTHUR, JOHN M. · 2008 to 2011
$1.5M
Biostatistics Training for Basic Biomedical ResearchT32GM074934 · NIGMS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI RAMAKRISHNAN, VISWANATHAN · 2005 to 2012
$1.1M
Angiotensin Metabolite Formation by Podocytes: Implications in Glomerular InjuryK08DK080944 · NIDDK · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI VELEZ, JUAN CARLOS Q. · 2008 to 2013
$803k
NIDDK NIH HHS 1R01DK080234NIDDK NIH HHS DK080944-04NIDDK NIH HHS K08 DK080944NIDDK NIH HHS R01 DK080234NIGMS NIH HHS 5T32GM74934-8NIGMS NIH HHS T32 GM074934
6 · The paper itself

Abstract

New insights into the intrarenal renin-angiotensin (Ang) system have modified our traditional view of the system. However, many finer details of this network of peptides and associated peptidases remain unclear. We hypothesized that a computational systems biology approach, applied to peptidomic data, could help to unravel the network of enzymatic conversions. We built and refined a Bayesian network model and a dynamic systems model starting from a skeleton created with established elements of the renin-Ang system and further developed it with archived matrix-assisted laser desorption ionization-time of flight mass spectra from experiments conducted in mouse podocytes exposed to exogenous Ang substrates. The model-building process suggested previously unrecognized steps, 3 of which were confirmed in vitro, including the conversion of Ang(2-10) to Ang(2-7) by neprilysin, Ang(1-9) to Ang(2-9), and Ang(1-7) to Ang(2-7) by aminopeptidase A. These data suggest a wider role of neprilysin and aminopeptidase A in glomerular formation of bioactive Ang peptides and shunting their formation. Other steps were also suggested by the model, and supporting evidence for those steps was evaluated using model-comparison methods. Our results demonstrate that systems biology methods applied to peptidomic data are effective in identifying novel steps in the Ang peptide processing network, and these findings improve our understanding of the glomerular renin-Ang system.

Indexed as

Metabolic Networks and PathwaysModels, BiologicalAngiotensinsAnimalsBayes TheoremCell LineGlutamyl AminopeptidaseHumansMiceNeprilysinPeptide FragmentsPodocytesRenin-Angiotensin SystemSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationSystems BiologyAngiotensinsGlutamyl AminopeptidaseNeprilysinPeptide Fragments

Identifiers

PMID23283355
PMCPMC5001166
OpenAlexW2099399150

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.