Evidence map›Paper›PMID 34831163›Full record

ArticleCells2021

Medium-Chain Length Fatty Acids Enhance Aβ Degradation by Affecting Insulin-Degrading Enzyme.

Janine Mett, Anna A Lauer, Daniel Janitschke, Lea V Griebsch, Elena L Theiss, Heike S Grimm, Hennariikka Koivisto, Heikki Tanila, Tobias Hartmann, Marcus O W Grimm

Open access · goldAbstract read
In one paragraph

Article in Cells, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

15 citing papers in PubMed, 20 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Article
  9. AβACS chemical neuroscience · 2023
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
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 2 institutions in 2 countries.

Janine MettBiosciences Zoology/Physiology-Neurobiology, Faculty NT-Natural Science and Technology, Saarland University, 66123 Saarbrücken, Germany.ORCID 0000-0002-5321-5043
Anna A LauerExperimental Neurology, Saarland University, 66424 Homburg, Germany.ORCID 0000-0002-8327-452X
Daniel JanitschkeExperimental Neurology, Saarland University, 66424 Homburg, Germany.ORCID 0000-0001-8966-0184
Lea V GriebschExperimental Neurology, Saarland University, 66424 Homburg, Germany.ORCID 0000-0001-5025-0188
Elena L TheissExperimental Neurology, Saarland University, 66424 Homburg, Germany.
Heike S GrimmExperimental Neurology, Saarland University, 66424 Homburg, Germany.
Hennariikka KoivistoA.I. Virtanen Institute, University of Eastern Finland, 70211 Kuopio, Finland.
Heikki TanilaA.I. Virtanen Institute, University of Eastern Finland, 70211 Kuopio, Finland.
Tobias HartmannExperimental Neurology, Saarland University, 66424 Homburg, Germany.ORCID 0000-0001-7481-6430
Marcus O W GrimmExperimental Neurology, Saarland University, 66424 Homburg, Germany.ORCID 0000-0002-4160-6506
Saarland University · DEUniversity of Eastern Finland · FI

Funding

EU Joint Programme - Neurodegenerative Disease Research (JPND) and BMBF grants MIND-AD 01ED1509EURO-FINGERS 01ED2003European Commission under the framework programme of the European Union 211696
6 · The paper itself

Abstract

The accumulation of amyloid β-protein (Aβ) is one of the major pathological hallmarks of Alzheimer's disease. Insulin-degrading enzyme (IDE), a zinc-metalloprotease, is a key enzyme involved in Aβ degradation, which, in addition to Aβ production, is critical for Aβ homeostasis. Here, we demonstrate that saturated medium-chain fatty acids (MCFAs) increase total Aβ degradation whereas longer saturated fatty acids result in an inhibition of its degradation, an effect which could not be detected in IDE knock-down cells. Further analysis of the underlying molecular mechanism revealed that MCFAs result in an increased exosomal IDE secretion, leading to an elevated extracellular and a decreased intracellular IDE level whereas gene expression of IDE was unaffected in dependence of the chain length. Additionally, MCFAs directly elevated the enzyme activity of recombinant IDE, while longer-chain length fatty acids resulted in an inhibited IDE activity. The effect of MCFAs on IDE activity could be confirmed in mice fed with a MCFA-enriched diet, revealing an increased IDE activity in serum. Our data underline that not only polyunsaturated fatty acids such as docosahexaenoic acid (DHA), but also short-chain fatty acids, highly enriched, for example in coconut oil, might be beneficial in preventing or treating Alzheimer's disease.

Indexed as

ProteolysisAmyloid beta-PeptidesAnimalsBiocatalysisCell LineFatty AcidsInsulysinMiceMice, Inbred C57BLModels, BiologicalAmyloid beta-PeptidesFatty AcidsInsulysinAlzheimer´s diseaseAβ degradationcoconut oilfatty acidsinsulin-degrading enzymelauric acidmedium-chain fatty acidsmyristic acid

Identifiers

PMID34831163
PMCPMC8616162
OpenAlexW3208033003

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.