Evidence map›Paper›PMID 23016931›Full record

ArticleJournal of neurochemistry2012

Nitric oxide-mediated regulation of β-amyloid clearance via alterations of MMP-9/TIMP-1.

Lisa A Ridnour, Sneha Dhanapal, Michael Hoos, Joan Wilson, Jennifer Lee, Robert Y S Cheng, Ernst E Brueggemann, Harry B Hines, Donna M Wilcock, Michael P Vitek and 2 more

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 9% 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

35 citing papers in PubMed, 1 synthesis or guideline pooled it, 50 citations in OpenAlex.

  1. Pooled it
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  4. Review
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  7. Review
  8. Review
  9. The Role of Extracellular Matrix in Human Neurodegenerative Diseases.International journal of molecular sciences · 2022
    Review
  10. Oxidative Stress and the Neurovascular Unit.Life (Basel, Switzerland) · 2021
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. 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

12 authors at 3 institutions in 1 country.

Lisa A RidnourRadiation Biology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA.
Sneha Dhanapal
Michael Hoos
Joan Wilson
Jennifer Lee
Robert Y S Cheng
Ernst E Brueggemann
Harry B Hines
Donna M Wilcock
Michael P Vitek
David A Wink
Carol A Colton
Duke University · USCenter for Cancer Research · USNational Cancer Institute · US

Funding

Redox Mechanism Process of Nos2 and COX2 in Stroma tumor interactionZIABC010898 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI WINK, DAVID · 2009 to 2025
$8.6M
The amyloid cascade in a novel mouse model of Alzheimer's diseaseR01AG031124 · NIA · DUKE UNIVERSITY · PI COLTON, CAROL ANNE · 2009 to 2013
$1.5M
A Mouse Model of Inflammation in Alzheimer's DiseaseR01AG031845 · NIA · DUKE UNIVERSITY · PI COLTON, CAROL ANNE · 2009 to 2013
$1.5M
Intramural NIH HHSNIA NIH HHS AG031845NIA NIH HHS R01 AG031124NIA NIH HHS R01 AG031845
6 · The paper itself

Abstract

Fibrillar amyloid plaques are largely composed of amyloid-beta (Aβ) peptides that are metabolized into products, including Aβ1-16, by proteases including matrix metalloproteinase 9 (MMP-9). The balance between production and degradation of Aβ proteins is critical to amyloid accumulation and resulting disease. Regulation of MMP-9 and its endogenous inhibitor tissue inhibitor of metalloproteinase (TIMP)-1 by nitric oxide (NO) has been shown. We hypothesize that nitric oxide synthase (NOS2) protects against Alzheimer's disease pathology by increasing amyloid clearance through NO regulation of MMP-9/TIMP-1 balance. We show NO-mediated increased MMP-9/TIMP-1 ratios enhanced the degradation of fibrillar Aβ in vitro, which was abolished when silenced for MMP-9 protein translation. The in vivo relationship between MMP-9, NO and Aβ degradation was examined by comparing an Alzheimer's disease mouse model that expresses NOS2 with a model lacking NOS2. To quantitate MMP-9 mediated changes, we generated an antibody recognizing the Aβ1-16 fragment, and used mass spectrometry multi-reaction monitoring assay for detection of immunoprecipitated Aβ1-16 peptides. Aβ1-16 levels decreased in brain lysates lacking NOS2 when compared with strains that express human amyloid precursor protein on the NOS2 background. TIMP-1 increased in the APPSwDI/NOS2(-/-) mice with decreased MMP activity and increased amyloid burden, thereby supporting roles for NO in the regulation of MMP/TIMP balance and plaque clearance.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAnimalsAstrocytesBrainChromatography, LiquidDisease Models, AnimalEnzyme-Linked Immunosorbent AssayFemaleHumansImmunoprecipitationMaleMatrix Metalloproteinase 2Matrix Metalloproteinase 9MiceMice, TransgenicAmyloid beta-PeptidesMatrix Metalloproteinase 2Matrix Metalloproteinase 9Nitric OxideTissue Inhibitor of Metalloproteinase-1

Identifiers

PMID23016931
PMCPMC3614913
OpenAlexW2091651295

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.