Evidence map›Paper›PMID 29134361›Full record

ArticleCerebellum (London, England)2018

Sonic Hedgehog Agonist Protects Against Complex Neonatal Cerebellar Injury.

Vien Nguyen, Khalida Sabeur, Emin Maltepe, Kurosh Ameri, Omer Bayraktar, David H Rowitch

Open access · hybridAbstract read
In one paragraph

Article in Cerebellum (London, England), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

16 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Cerebellar Development and the Burden of Prematurity.Cerebellum (London, England) · 2025
    Review
  3. Fibrinogen inhibits sonic hedgehog signaling and impairs neonatal cerebellar development after blood-brain barrier disruption.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Glucocorticoid-Dependent Mechanisms of Brain Tolerance to Hypoxia.International journal of molecular sciences · 2021
    Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. 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

6 authors at 2 institutions in 2 countries.

Vien NguyenDepartment of Pediatrics, Eli and Edythe Broad Institute for Stem Cell Research and Regenerative Medicine, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA.
Khalida SabeurDepartment of Pediatrics, Eli and Edythe Broad Institute for Stem Cell Research and Regenerative Medicine, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA.
Emin MaltepeDivision of Neonatology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA.
Kurosh AmeriDepartment of Cardiology, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA.
Omer BayraktarDepartment of Pediatrics, Eli and Edythe Broad Institute for Stem Cell Research and Regenerative Medicine, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA.
David H RowitchDepartment of Pediatrics, Eli and Edythe Broad Institute for Stem Cell Research and Regenerative Medicine, University of California, San Francisco, 513 Parnassus Avenue, San Francisco, CA, 94143, USA. dhr25@medschl.cam.ac.uk.
University of California, San Francisco · USBroad Institute · US

Funding

Regulation of Cellular Pathwaysin Human Brain DevelopmentP01NS083513 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI ALVAREZ-BUYLLA, ARTURO · 2014 to 2024
$12.6M
NINDS NIH HHS P01 NS083513NINDS NIH HHS P01NS083513Wellcome Trust
6 · The paper itself

Abstract

The cerebellum undergoes rapid growth during the third trimester and is vulnerable to injury and deficient growth in infants born prematurely. Factors associated with preterm cerebellar hypoplasia include chronic lung disease and postnatal glucocorticoid administration. We modeled chronic hypoxemia and glucocorticoid administration in neonatal mice to study whole cerebellar and cell type-specific effects of dual exposure. Chronic neonatal hypoxia resulted in permanent cerebellar hypoplasia. This was compounded by administration of prednisolone as shown by greater volume loss and Purkinje cell death. In the setting of hypoxia and prednisolone, administration of a small molecule Smoothened-Hedgehog agonist (SAG) preserved cerebellar volume and protected against Purkinje cell death. Such protective effects were observed even when SAG was given as a one-time dose after dual insult. To model complex injury and determine cell type-specific roles for the hypoxia inducible factor (HIF) pathway, we performed conditional knockout of von Hippel Lindau (VHL) to hyperactivate HIF1α in cerebellar granule neuron precursors (CGNP) or Purkinje cells. Surprisingly, HIF activation in either cell type resulted in no cerebellar deficit. However, in mice administered prednisolone, HIF overactivation in CGNPs resulted in significant cerebellar hypoplasia, whereas HIF overactivation in Purkinje cells caused cell death. Together, these findings indicate that HIF primes both cell types for injury via glucocorticoids, and that hypoxia/HIF + postnatal glucocorticoid administration act on distinct cellular pathways to cause cerebellar injury. They further suggest that SAG is neuroprotective in the setting of complex neonatal cerebellar injury.

Indexed as

Amino Acids, DicarboxylicAnimalsAnimals, NewbornAnti-Inflammatory AgentsBasic Helix-Loop-Helix ProteinsCalcium-Binding ProteinsCell ProliferationCells, CulturedCerebellumCyclohexylaminesDevelopmental DisabilitiesDisease Models, AnimalGene Expression Regulation, DevelopmentalGlucocorticoidsHedgehog ProteinsHypoxia, BrainAif1 protein, mouseAmino Acids, DicarboxylicAnti-Inflammatory AgentsAtoh1 protein, mouseBasic Helix-Loop-Helix ProteinsCalcium-Binding ProteinsCyclohexylaminesGlucocorticoidsHedgehog ProteinsMicrofilament ProteinsNerve Tissue ProteinsNeuroprotective AgentsoxalylglycinePrednisolonePurkinje cell protein L7SAG compoundShh protein, mouseThiophenesVHL protein, mouseVon Hippel-Lindau Tumor Suppressor ProteinZinc Finger Protein GLI1Brain developmentCerebral palsyGlucocorticoidHIF signalingHypoxiaShh signaling

Identifiers

PMID29134361
PMCPMC5849674
OpenAlexW2768531116

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.