Evidence map›Paper›PMID 15153250›Full record

ArticleBMC neuroscience2004

Both 5' and 3' flanks regulate Zebrafish brain-derived neurotrophic factor gene expression.

Gerhard Heinrich, Carl John Pagtakhan

Open access · goldAbstract read
In one paragraph

Article in BMC neuroscience, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
0.3field-weighted citation impact, top 50% 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

20 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Effect of Tempeh on Gut Microbiota and Anti-Stress Activity in Zebrafish.International journal of molecular sciences · 2021
    Article
  6. Review
  7. Article
  8. Article
  9. Neurotrophins in the Brain of Teleost Fish: The State of the Art.Advances in experimental medicine and biology · 2021
    Review
  10. BDNF, Brain, and Regeneration: Insights from Zebrafish.International journal of molecular sciences · 2018
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Brain-derived neurotrophic factor mediates non-cell-autonomous regulation of sensory neuron position and identity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2010
    Article
  17. Article
  18. Review
  19. Article
  20. Mouse and rat BDNF gene structure and expression revisited.Journal of neuroscience research · 2007
    Article
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

2 authors at 1 institution in 1 country.

Gerhard HeinrichMedical Service, VA Northern California Health Care System, Martinez, CA 94553, USA. gheinrich@ucdavis.ed
Carl John Pagtakhan
VA Northern California Health Care System · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrecise control of developmental and cell-specific expression of the brain-derived neurotrophic factor (BDNF) gene is essential for normal neuronal development and the diverse functions of BDNF in the adult organism. We previously showed that the zebrafish BDNF gene has multiple promoters. The complexity of the promoter structure and the mechanisms that mediate developmental and cell-specific expression are still incompletely understood.

resultsComparison of pufferfish and zebrafish BDNF gene sequences as well as 5' RACE revealed three additional 5' exons and associated promoters. RT-PCR with exon-specific primers showed differential developmental and organ-specific expression. Two exons were detected in the embryo before transcription starts. Of the adult organs examined, the heart expressed a single 5' exon whereas the brain, liver and eyes expressed four of the seven 5' exons. Three of the seven 5' exons were not detectable by RT-PCR. Injection of promoter/GFP constructs into embryos revealed distinct expression patterns. The 3' flank profoundly affected expression in a position-dependent manner and a highly conserved sequence (HCS1) present in 5' exon 1c in a dehancer-like manner.

conclusionsThe zebrafish BDNF gene is as complex in its promoter structure and patterns of differential promoter expression as is its murine counterpart. The expression of two of the promoters appears to be regulated in a temporally and/or spatially highly circumscribed fashion. The 3' flank has a position-dependent effect on expression, either by affecting transcription termination or post-transcriptional steps. HCS1, a highly conserved sequence in 5' exon 1c, restricts expression to primary sensory neurons. The tools are now available for detailed genetic and molecular analyses of zebrafish BDNF gene expression.

Indexed as

3' Flanking Region5' Flanking RegionAlternative SplicingAnimalsAnimals, Genetically ModifiedBrain-Derived Neurotrophic FactorCloning, MolecularConserved SequenceEmbryo, NonmammalianExonsGene Expression Regulation, DevelopmentalGenes, ReporterGene Transfer TechniquesMolecular Sequence DataOrgan SpecificityPromoter Regions, GeneticBrain-Derived Neurotrophic FactorRecombinant Proteins

Identifiers

PMID15153250
PMCPMC442124
OpenAlexW2170919835

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.