Evidence map›Paper›PMID 26837706›Full record

ArticleScientific reports2016

Transthyretin participates in beta-amyloid transport from the brain to the liver--involvement of the low-density lipoprotein receptor-related protein 1?

Mobina Alemi, Cristiana Gaiteiro, Carlos Alexandre Ribeiro, Luís Miguel Santos, João Rodrigues Gomes, Sandra Marisa Oliveira, Pierre-Olivier Couraud, Babette Weksler, Ignacio Romero, Maria João Saraiva and 1 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 5% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 106 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

11 authors at 6 institutions in 4 countries.

Mobina AlemiIBMC-Instituto de Biologia Molecular e Celular.
Cristiana GaiteiroIBMC-Instituto de Biologia Molecular e Celular.
Carlos Alexandre RibeiroIBMC-Instituto de Biologia Molecular e Celular.
Luís Miguel SantosIBMC-Instituto de Biologia Molecular e Celular.
João Rodrigues GomesIBMC-Instituto de Biologia Molecular e Celular.
Sandra Marisa OliveiraIBMC-Instituto de Biologia Molecular e Celular.
Pierre-Olivier CouraudInstitut Cochin, INSERM U1016, CNRS UMR 8104, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.
Babette WekslerWeill Cornell Medical College, Division of Hematology-Medical Oncology, 1300 York Avenue Rm C 606, New York, NY 10065.
Ignacio RomeroDepartment of Life, Health and Chemical Sciences, Open University, Milton Keynes, U.K.
Maria João SaraivaIBMC-Instituto de Biologia Molecular e Celular.
Isabel CardosoIBMC-Instituto de Biologia Molecular e Celular.
Instituto de Biologia Molecular e CelularCornell University · USi3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto · PTSorbonne Paris Cité · FRThe Open University · GBUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transthyretin (TTR) binds Aβ peptide, preventing its deposition and toxicity. TTR is decreased in Alzheimer's disease (AD) patients. Additionally, AD transgenic mice with only one copy of the TTR gene show increased brain and plasma Aβ levels when compared to AD mice with both copies of the gene, suggesting TTR involvement in brain Aβ efflux and/or peripheral clearance. Here we showed that TTR promotes Aβ internalization and efflux in a human cerebral microvascular endothelial cell line, hCMEC/D3. TTR also stimulated brain-to-blood but not blood-to-brain Aβ permeability in hCMEC/D3, suggesting that TTR interacts directly with Aβ at the blood-brain-barrier. We also observed that TTR crosses the monolayer of cells only in the brain-to-blood direction, as confirmed by in vivo studies, suggesting that TTR can transport Aβ from, but not into the brain. Furthermore, TTR increased Aβ internalization by SAHep cells and by primary hepatocytes from TTR+/+ mice when compared to TTR-/- animals. We propose that TTR-mediated Aβ clearance is through LRP1, as lower receptor expression was found in brains and livers of TTR-/- mice and in cells incubated without TTR. Our results suggest that TTR acts as a carrier of Aβ at the blood-brain-barrier and liver, using LRP1.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesAnimalsBlood-Brain BarrierBrainCell LineDisease Models, AnimalHumansLiverLow Density Lipoprotein Receptor-Related Protein-1MiceMice, TransgenicPrealbuminProtein TransportAmyloid beta-PeptidesLow Density Lipoprotein Receptor-Related Protein-1LRP1 protein, humanPrealbumin

Identifiers

PMID26837706
PMCPMC4738280
OpenAlexW2415830294

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.