Evidence map›Paper›PMID 11960318›Full record

ArticleGene therapy2002

Liposome-mediated transfer of the bcl-2 gene results in neuroprotection after in vivo transient focal cerebral ischemia in an animal model.

Y-J Cao, T Shibata, N G Rainov

Abstract read
PubMed Publisher
In one paragraph

Article in Gene therapy, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 12% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Intrathecal drug delivery in the era of nanomedicine.Advanced drug delivery reviews · 2020
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  4. Organ-targeted high-throughput in vivo biologics screen identifies materials for RNA delivery.Integrative biology : quantitative biosciences from nano to macro · 2014
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  8. Review
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  11. Nonviral gene transfection nanoparticles: function and applications in the brain.Nanomedicine : nanotechnology, biology, and medicine · 2008
    Review
  12. Review
  13. Increased expression of a proline-rich Akt substrate (PRAS40) in human copper/zinc-superoxide dismutase transgenic rats protects motor neurons from death after spinal cord injury.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2008
    Article
  14. Antidepressant-induced neurogenesis in the hippocampus of adult nonhuman primates.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2007
    Article
  15. 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

3 authors at 3 institutions in 3 countries.

Y-J CaoMolecular Neuro-oncology Laboratory, Department of Neurosurgery, Martin-Luther-University, Halle/S, Germany.
T Shibata
N G Rainov
Martin Luther University Halle-Wittenberg · DEStanford University · USUniversity of Liverpool · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute cerebral ischemia causes hypoxic neuronal cell death by necrosis and apoptosis. Expression of anti-apoptotic transgenes in ischemic brain may provide a useful therapeutic strategy for alleviation of postischemic damage. The present study investigates liposome-mediated transfer of the human bcl-2 protein in a rat model of focal transient ischemia due to middle cerebral artery (MCA) occlusion. Two different types of plasmid vectors were used for bcl-2 expression: one driven by the constitutive cytomegalovirus promoter (pCMV) and another based on the hypoxia-inducible human vascular endothelial growth factor promoter (pHRE). Cationic liposome/plasmid DNA complexes (lipoplexes) were injected directly into the cerebrospinal fluid (CSF) of rats immediately after MCA occlusion. The brains of treated and control animals were analyzed 48 h later. Infarct volumes and numbers of apoptotic cells were quantified. Occlusion of the MCA resulted in ipsilateral cerebral infarcts in all study animals. Transfer of the bcl-2 gene resulted in high level widespread protein expression in the case of the pCMV-bcl2 plasmid, while animals treated with the pHRE-bcl2 vector showed lower expression levels of bcl2 which were in addition limited to the ischemic area. Treatment with pCMV-bcl2, but not with pHRE-bcl2, was able to significantly reduce the infarct volume, which was 109 +/- 8 mm(3) for pCMV-bcl2, 152 +/- 29 mm(3) for pHRE-bcl2, and 155 +/- 18 mm(3) for control animals. Animals transfected with either vector showed a significant reduction in numbers of apoptotic cells in the infarct and penumbra area compared with controls. There were no short-term neurological side-effects of the CSF injection of lipoplexes or of bcl-2 expression. In conclusion, the hypoxia-inducible bcl-2 expression mediated by intrathecal lipoplexes may represent a novel, biologically safe and lesion-selective therapeutic approach for neuroprotection after acute cerebral ischemia. DOI: 10.1038/sj/gt/3301676

Indexed as

Genes, bcl-2Acute DiseaseAnimalsApoptosisBrain IschemiaCytomegalovirusEndothelial Growth FactorsGene ExpressionGenetic TherapyGenetic VectorsInjections, SpinalLiposomesLymphokinesMaleModels, AnimalPromoter Regions, GeneticEndothelial Growth FactorsLiposomesLymphokinesVascular Endothelial Growth Factor AVascular Endothelial Growth Factors

Identifiers

PMID11960318
OpenAlexW2320734990

What OpenQuestion holds

Textmetadata
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.