Evidence map›Paper›PMID 19046407›Full record

ArticleJournal of neurochemistry2009

Afamin is synthesized by cerebrovascular endothelial cells and mediates alpha-tocopherol transport across an in vitro model of the blood-brain barrier.

Ingrid Kratzer, Eva Bernhart, Andrea Wintersperger, Astrid Hammer, Sabine Waltl, Ernst Malle, Günther Sperk, Georg Wietzorrek, Hans Dieplinger, Wolfgang Sattler

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
0.6field-weighted citation impact, top 37% 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

24 citing papers in PubMed, 53 citations in OpenAlex.

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  11. Plasma Biomarkers: Potent Screeners of Alzheimer's Disease.American journal of Alzheimer's disease and other dementias · 2019
    Review
  12. [LC-MS/MS-based screening of new protein biomarkers for cervical precancerous lesions and cervical cancer].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2019
    Article
  13. Article
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  16. The vitamin E-binding protein afamin increases in maternal serum during pregnancy.Clinica chimica acta; international journal of clinical chemistry · 2014
    Article
  17. Article
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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 2 institutions in 1 country.

Ingrid KratzerInstitute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University of Graz, Graz, Austria.
Eva Bernhart
Andrea Wintersperger
Astrid Hammer
Sabine Waltl
Ernst Malle
Günther Sperk
Georg Wietzorrek
Hans Dieplinger
Wolfgang Sattler
Medical University of Graz · ATInnsbruck Medical University · AT

Funding

Austrian Science Fund FWF F 3007Austrian Science Fund FWF P 19074Austrian Science Fund FWF P 19464
6 · The paper itself

Abstract

Alpha-tocopherol (alphaTocH), a member of the vitamin E family, is essential for normal neurological function. Despite the importance of alphaTocH transport into the CNS, transfer mechanisms across the blood-brain barrier (BBB) are not entirely clear. We here investigate whether afamin, a known alphaTocH-binding protein, contributes to alphaTocH transport across an in vitro model of the BBB consisting of primary porcine brain capillary endothelial cells (BCEC) and basolaterally cultured astrocytoma cells. Exogenously added afamin had no adverse effects on BCEC viability or barrier function and was transported across BCEC Transwell cultures. Furthermore, alphaTocH transport across polarized BCEC cultures to astrocytoma cells is facilitated by afamin, though to a lesser extent than by high-density lipoprotein-mediated transport, an essential and in vivo operating alphaTocH import pathway at the cerebrovasculature. We also demonstrate that porcine BCEC endogenously synthesize afamin. In line with these in vitro findings, afamin was detected by immunohistochemistry in porcine, human postmortem, and mouse brain, where prominent staining was observed almost exclusively in the cerebrovasculature. The demonstration of afamin mRNA expression in isolated brain capillaries suggests that afamin might be a new family member of binding/transport proteins contributing to alphaTocH homeostasis at the BBB in vivo.

Indexed as

alpha-TocopherolAnimalsAstrocytesAstrocytomaBiological Transport, ActiveBlood-Brain BarrierBlotting, WesternCapillariesCarrier ProteinsCerebrovascular CirculationCHO CellsCoculture TechniquesCricetinaeCricetulusElectrophoresis, Polyacrylamide GelEndothelial CellsAFM protein, humanalpha-TocopherolCarrier ProteinsGlycoproteinsLipoproteins, HDLRecombinant ProteinsRNASerum AlbuminSerum Albumin, HumanTetrazolium SaltsThiazolesthiazolyl blue

Identifiers

PMID19046407
PMCPMC3064965
OpenAlexW2039098839

What OpenQuestion holds

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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.