Evidence map›Paper›PMID 19805624›Full record

ArticleJournal of lipid research2010

Secretory phospholipase A2 type III enhances alpha-secretase-dependent amyloid precursor protein processing through alterations in membrane fluidity.

Xiaoguang Yang, Wenwen Sheng, Yan He, Jiankun Cui, Mark A Haidekker, Grace Y Sun, James C-M Lee

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.5field-weighted citation impact, top 18% 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, 36 citations in OpenAlex.

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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 2 institutions in 1 country.

Xiaoguang YangDepartment of Biological Engineering, University of Missouri, Columbia, MO 65211, USA.
Wenwen Sheng
Yan He
Jiankun Cui
Mark A Haidekker
Grace Y Sun
James C-M Lee
University of Missouri · USUniversity of Georgia · US

Funding

PATHOGENESIS OF PHOSPHOLIPASES A2 IN ADP01AG018357 · NIA · UNIVERSITY OF MISSOURI-COLUMBIA · PI SUN, GRACE Y · 2001 to 2012
$10.4M
Effects of oxidative stress on glial cell membranesR21NS052385 · NINDS · UNIVERSITY OF MISSOURI-COLUMBIA · PI LEE, JAMES C · 2007 to 2008
$344k
NIA NIH HHS 1P01 AG18357NIA NIH HHS P01 AG018357NINDS NIH HHS 1R21 NS052385NINDS NIH HHS R21 NS052385
6 · The paper itself

Abstract

In the non-amyloidogenic pathway, amyloid precursor protein (APP) is cleaved by alpha-secretases to produce alpha-secretase-cleaved soluble APP (sAPP(alpha)) with neuroprotective and neurotrophic properties; therefore, enhancing the non-amyloidogenic pathway has been suggested as a potential pharmacological approach for the treatment of Alzheimer's disease. Here, we demonstrate the effects of type III secretory phospholipase A(2) (sPLA(2)-III) on sAPP(alpha) secretion. Exposing differentiated neuronal cells (SH-SY5Y cells and primary rat neurons) to sPLA(2)-III for 24 h increased sAPP(alpha) secretion and decreased levels of Abeta(1-42) in SH-SY5Y cells, and these changes were accompanied by increased membrane fluidity. We further tested whether sPLA(2)-III-enhanced sAPP(alpha) release is due in part to the production of its hydrolyzed products, including arachidonic acid (AA), palmitic acid (PA), and lysophosphatidylcholine (LPC). Addition of AA but neither PA nor LPC mimicked sPLA(2)-III-induced increases in sAPP(alpha) secretion and membrane fluidity. Treatment with sPLA(2)-III and AA increased accumulation of APP at the cell surface but did not alter total expressions of APP, alpha-secretases, and beta-site APP cleaving enzyme. Taken together, these results support the hypothesis that sPLA(2)-III enhances sAPP(alpha) secretion through its action to increase membrane fluidity and recruitment of APP at the cell surface.

Indexed as

Amyloid beta-Protein PrecursorAmyloid Precursor Protein SecretasesAnimalsArachidonic AcidAspartic Acid EndopeptidasesCell DifferentiationCell Line, TumorGene Expression Regulation, EnzymologicGroup III Phospholipases A2HumansHydrolysisLysophosphatidylcholinesMembrane FluidityNeuronsPalmitic AcidRatsAmyloid beta-Protein PrecursorAmyloid Precursor Protein SecretasesArachidonic AcidAspartic Acid EndopeptidasesBace1 protein, ratGroup III Phospholipases A2LysophosphatidylcholinesPalmitic Acid

Identifiers

PMID19805624
PMCPMC2853463
OpenAlexW2097520077

What OpenQuestion holds

Textmetadata
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.