Evidence map›Paper›PMID 19497871›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Optimal neuroprotection by erythropoietin requires elevated expression of its receptor in neurons.

Pascal E Sanchez, Raafat P Fares, Jean-Jacques Risso, Chantal Bonnet, Sandrine Bouvard, Marion Le-Cavorsin, Béatrice Georges, Colette Moulin, Amor Belmeguenai, Jacques Bodennec and 5 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
5.7field-weighted citation impact, top 3% 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

47 citing papers in PubMed, 98 citations in OpenAlex.

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  14. Insights into Potential Targets for Therapeutic Intervention in Epilepsy.International journal of molecular sciences · 2020
    Review
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  16. Genetic compensation byCell cycle (Georgetown, Tex.) · 2019
    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

15 authors at 6 institutions in 2 countries.

Pascal E SanchezUniversity of Lyon, F-69003 Lyon, France.
Raafat P Fares
Jean-Jacques Risso
Chantal Bonnet
Sandrine Bouvard
Marion Le-Cavorsin
Béatrice Georges
Colette Moulin
Amor Belmeguenai
Jacques Bodennec
Anne Morales
Jean-Marc Pequignot
Etienne-Emile Baulieu
Robert A Levine
Laurent Bezin
Centre National de la Recherche Scientifique · FRHospices Civils de Lyon · FRUniversité Claude Bernard Lyon 1 · FRHenry Ford Health System · USInserm · FRService de Santé des Armées · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Erythropoietin receptor (EpoR) binding mediates neuroprotection by endogenous Epo or by exogenous recombinant human (rh)Epo. The level of EpoR gene expression may determine tissue responsiveness to Epo. Thus, harnessing the neuroprotective power of Epo requires an understanding of the Epo-EpoR system and its regulation. We tested the hypothesis that neuronal expression of EpoR is required to achieve optimal neuroprotection by Epo. The ventral limbic region (VLR) in the rat brain was used because we determined that its neurons express minimal EpoR under basal conditions, and they are highly sensitive to excitotoxic damage, such as occurs with pilocarpine-induced status epilepticus (Pilo-SE). We report that (i) EpoR expression is significantly elevated in nearly all VLR neurons when rats are subjected to 3 moderate hypoxic exposures, with each separated by a 4-day interval; (ii) synergistic induction of EpoR expression is achieved in the dorsal hippocampus and neocortex by the combination of hypoxia and exposure to an enriched environment, with minimal increased expression by either treatment alone; and (iii) rhEpo administered after Pilo-SE cannot rescue neurons in the VLR, unless neuronal induction of EpoR is elicited by hypoxia before Pilo-SE. This study thus demonstrates using environmental manipulations in normal rodents, the strict requirement for induction of EpoR expression in brain neurons to achieve optimal neuroprotection. Our results indicate that regulation of EpoR gene expression may facilitate the neuroprotective potential of rhEpo.

Indexed as

AnimalsEnzyme-Linked Immunosorbent AssayErythropoietinGene Expression RegulationHypoxiaMaleNeuronsNeuroprotective AgentsPilocarpineRatsRats, Sprague-DawleyReceptors, ErythropoietinRecombinant ProteinsReverse Transcriptase Polymerase Chain ReactionRNA, MessengerStatus EpilepticusErythropoietinNeuroprotective AgentsPilocarpineReceptors, ErythropoietinRecombinant ProteinsRNA, Messenger

Identifiers

PMID19497871
PMCPMC2701030
OpenAlexW2082077613

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.