Evidence map›Paper›PMID 26519433›Full record

ArticleJournal of Alzheimer's disease : JAD2016

Protein Kinase Activity Decreases with Higher Braak Stages of Alzheimer's Disease Pathology.

Andrea F N Rosenberger, Riet Hilhorst, Elisabeth Coart, Leandro García Barrado, Faris Naji, Annemieke J M Rozemuller, Wiesje M van der Flier, Philip Scheltens, Jeroen J M Hoozemans, Saskia M van der Vies

Open access · bronzeAbstract read
In one paragraph

Article in Journal of Alzheimer's disease : JAD, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 13% 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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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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

10 authors at 3 institutions in 2 countries.

Andrea F N RosenbergerAlzheimer Center & Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Riet HilhorstPamGene International BV, 's-Hertogenbosch, The Netherlands.
Elisabeth CoartInternational Drug Development Institute, Louvain-la-Neuve, Belgium.
Leandro García BarradoInternational Drug Development Institute, Louvain-la-Neuve, Belgium.
Faris NajiPamGene International BV, 's-Hertogenbosch, The Netherlands.
Annemieke J M RozemullerDepartment of Pathology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Wiesje M van der FlierAlzheimer Center & Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Philip ScheltensAlzheimer Center & Department of Neurology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Jeroen J M HoozemansDepartment of Pathology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Saskia M van der ViesDepartment of Pathology, Neuroscience Campus Amsterdam, VU University Medical Center, Amsterdam, The Netherlands.
Amsterdam Neuroscience · NLInternational Drug Development Institute (Belgium) · BEPamGene (Netherlands) · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alzheimer's disease (AD) is characterized by a long pre-clinical phase (20-30 years), during which significant brain pathology manifests itself. Disease mechanisms associated with pathological hallmarks remain elusive. Most processes associated with AD pathogenesis, such as inflammation, synaptic dysfunction, and hyper-phosphorylation of tau are dependent on protein kinase activity. The objective of this study was to determine the involvement of protein kinases in AD pathogenesis. Protein kinase activity was determined in postmortem hippocampal brain tissue of 60 patients at various stages of AD and 40 non-demented controls (Braak stages 0-VI) using a peptide-based microarray platform. We observed an overall decrease of protein kinase activity that correlated with disease progression. The phosphorylation of 96.7% of the serine/threonine peptides and 37.5% of the tyrosine peptides on the microarray decreased significantly with increased Braak stage (p-value <0.01). Decreased activity was evident at pre-clinical stages of AD pathology (Braak I-II). Increased phosphorylation was not observed for any peptide. STRING analysis in combination with pathway analysis and identification of kinases responsible for peptide phosphorylation showed the interactions between well-known proteins in AD pathology, including the Ephrin-receptor A1 (EphA1), a risk gene for AD, and sarcoma tyrosine kinase (Src), which is involved in memory formation. Additionally, kinases that have not previously been associated with AD were identified, e.g., protein tyrosine kinase 6 (PTK6/BRK), feline sarcoma oncogene kinase (FES), and fyn-associated tyrosine kinase (FRK). The identified protein kinases are new biomarkers and potential drug targets for early (pre-clinical) intervention.

Indexed as

AgedAged, 80 and overAlzheimer DiseaseCohort StudiesFemaleHippocampusHumansMaleMiddle AgedPhosphorylationProtein KinasesProtein Serine-Threonine KinasesSeverity of Illness IndexProtein KinasesProtein Serine-Threonine KinasesAlzheimer’s diseasepeptide microarray analysisphospho-peptidespostmortem changesprotein kinase activitysignaling pathways

Identifiers

PMID26519433
PMCPMC4927853
OpenAlexW1867017208

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.