Evidence map›Paper›PMID 24425124›Full record

ArticleStroke2014

Inhibition of transforming growth factor-β attenuates brain injury and neurological deficits in a rat model of germinal matrix hemorrhage.

Anatol Manaenko, Tim Lekic, Margaret Barnhart, Richard Hartman, John H Zhang

Expression of concernOpen access · bronzeAbstract read
In one paragraph

Article in Stroke, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It carries an expression of concern. Cited by 34 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 4 pooled it
2.8field-weighted citation impact, top 9% 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

34 citing papers in PubMed, 4 syntheses or guidelines pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. The role of blood product removal in intraventricular hemorrhage of prematurity: a meta-analysis of the clinical evidence.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2022
    Pooled it
  4. Intraventricular hemorrhage and posthemorrhagic hydrocephalus in preterm infants: diagnosis, classification, and treatment options.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2019
    Pooled it
  5. Article
  6. Review
  7. Review
  8. Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Thrombocytopenia: is it a prognostic factor for development of post-hemorrhagic hydrocephalus in neonates?Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2021
    Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Anatol ManaenkoFrom the Departments of Basic Science (A.M., T.L., J.H.Z.), Neurosurgery (J.H.Z.), Anesthesiology (M.B., J.H.Z.), and Psychology (R.H.), Loma Linda University, CA.
Tim Lekic
Margaret Barnhart
Richard Hartman
John H Zhang
Hi-Z Technology (United States) · US

Funding

Harness Germinal Matrix HemorrhageR01NS078755 · NINDS · LOMA LINDA UNIVERSITY · PI ZHANG, JOHN H · 2012 to 2016
$1.7M
Neurovascular Protection for Early Brain Injury after SAHR01NS081740 · NINDS · LOMA LINDA UNIVERSITY · PI ZHANG, JOHN H · 2013 to 2017
$1.6M
NINDS NIH HHS R01 NS078755NINDS NIH HHS R01 NS081740PHS HHS 078755
6 · The paper itself

Abstract

background and purposeTransforming growth factor-β (TGF-β) overproduction and activation of the TGF-β pathway are associated with the development of brain injury following germinal matrix hemorrhage (GMH) in premature infants. We examined the effects of GMH on the level of TGF-β1 in a novel rat collagenase-induced GMH model and determined the effect of inhibition of the TGF receptor I.

methodsIn total, 92 seven-day old (P7) rats were used. Time-dependent effects of GMH on the level of TGF-β1 and TGF receptor I were evaluated by Western blot. A TGF receptor I inhibitor (SD208) was administered daily for 3 days, starting either 1 hour or 3 days after GMH induction. The effects of GMH and SD208 on the TGF-β pathway were evaluated by Western blot at day 3. The effects of GMH and SD208 on cognitive and motor function were also assessed. The effects of TGF receptor I inhibition by SD208 on GMH-induced brain injury and underlying molecular pathways were investigated by Western blot, immunofluorescence, and morphology studies 24 days after GMH.

resultsGMH induced significant delay in development, caused impairment in both cognitive and motor functions, and resulted in brain atrophy in rat subjects. GMH also caused deposition of both vitronectin (an extracellular matrix protein) and glial fibrillary acidic protein in perilesion areas, associated with development of hydrocephalus. SD208 ameliorated GMH-induced developmental delay, improved cognitive and motor functions, and attenuated body weight loss. SD208 also decreased vitronectin and glial fibrillary acidic protein deposition and decreased GMH-induced brain injury.

conclusionsIncreased level of TGF-β1 and activation of the TGF-β pathway associate with the development of brain injury after GMH. SD208 inhibits GMH-induced activation of the TGF-β pathway and leads to an improved developmental profile, partial recovery of cognitive and motor functions, and attenuation of GMH-induced brain atrophy and hydrocephalus.

Indexed as

AdultAnimalsAtrophyBlotting, WesternBrain InjuriesCerebral VentriclesExtracellular Matrix ProteinsFemaleGlial Fibrillary Acidic ProteinHumansHydrocephalusImmunohistochemistryIntracranial HemorrhagesNervous System DiseasesNeurologic ExaminationPregnancyExtracellular Matrix ProteinsGlial Fibrillary Acidic ProteinPteridinesSD-208Transforming Growth Factor betaVitronectinreceptors, transforming growth factor betatransforming growth factor beta

Identifiers

PMID24425124
PMCPMC3966308
OpenAlexW2122552754

What OpenQuestion holds

Textmetadata
LicenceTDM
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.