Evidence map›Paper›PMID 18240316›Full record

ArticleHippocampus2008

Dynamic expression of TrkB receptor protein on proliferating and maturing cells in the adult mouse dentate gyrus.

Michael H Donovan, Masahiro Yamaguchi, Amelia J Eisch

Open access · greenAbstract read
In one paragraph

Article in Hippocampus, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
3.3field-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

51 citing papers in PubMed, 95 citations in OpenAlex.

  1. Ras-MAPK somatic variants in mesial temporal lobe epilepsy.Current opinion in genetics & development · 2026
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  9. The human bone marrow harbors a CD45Stem cells translational medicine · 2021
    Article
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  11. Review
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  14. Effect of nutrients and exhaustive exercise on brain function.Journal of exercise rehabilitation · 2019
    Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. 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

3 authors at 2 institutions in 2 countries.

Michael H DonovanDepartment of Psychiatry, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9070, USA.
Masahiro Yamaguchi
Amelia J Eisch
The University of Texas Southwestern Medical Center · USThe University of Tokyo · JP

Funding

Regulation of adult neurogenesis by opiatesR01DA016765 · NIDA · UT SOUTHWESTERN MEDICAL CENTER · PI EISCH, AMELIA J · 2004 to 2013
$4.0M
New Horizons in Adult NeurogenesisK02DA023555 · NIDA · UT SOUTHWESTERN MEDICAL CENTER · PI EISCH, AMELIA J · 2007 to 2017
$1.1M
Mechanism of Neurogenesis Increase after AntidepressantsF31MH075457 · NIMH · UT SOUTHWESTERN MEDICAL CENTER · PI DONOVAN, MICHAEL H · 2006 to 2007
$59k
NIDA NIH HHS K02 DA023555NIDA NIH HHS R01 DA016765NIDA NIH HHS R01 DA16765NIMH NIH HHS F31 MH075457NIMH NIH HHS F31 MH07547
6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF) is implicated in the regulation of adult hippocampal neurogenesis, presumably via its primary receptor, TrkB. However, controversy exists about how BDNF affects neurogenesis (e.g., proliferation vs. survival/differentiation). This controversy arises, in part, due to the lack of information about whether and when TrkB is expressed on adult neural precursors in vivo. We utilized multiple methods to analyze proliferating and maturing cells in the adult mouse subgranular zone (SGZ) for TrkB protein. Using bromodeoxyuridine (BrdU) to "birthdate" cells, we found that the proportion of proliferating cells that were TrkB-immunoreactive (IR) was low and remained low for at least 1 week, but increased with further survival after BrdU labeling. Use of the nestin-GFP transgenic mouse and the immature neuron marker, doublecortin (Dcx), revealed that the likelihood of being TrkB-IR increased with presumed maturity of the cell type. Stem-like cells, which rarely divide, were likely to express TrkB protein. However, early progenitors (GFP+/Dcx-) and late progenitors (GFP+/Dcx+), both of which are still in the cell cycle, were unlikely to be TrkB-IR. Immature neuroblasts (GFP-/Dcx+) were more likely to express TrkB, especially as they presented a more mature morphology. Taken together, these findings emphasize that expression of TrkB protein is closely linked to progression toward neuronal maturity. This provides evidence that maturing, but not proliferating, cells in the adult mouse SGZ have the molecular machinery necessary to respond directly to BDNF. Furthermore, these findings lay critical groundwork for further exploration of the role of BDNF-TrkB signaling in regulation of adult hippocampal neurogenesis.

Indexed as

AnimalsBrain-Derived Neurotrophic FactorBromodeoxyuridineCell DifferentiationCell ProliferationDentate GyrusDoublecortin ProteinGreen Fluorescent ProteinsImmunohistochemistryMiceMice, Inbred C57BLMice, TransgenicMicroscopy, ConfocalNeuronsReceptor, trkBStem CellsBrain-Derived Neurotrophic FactorBromodeoxyuridineDcx protein, mouseDoublecortin ProteinGreen Fluorescent ProteinsReceptor, trkB

Identifiers

PMID18240316
PMCPMC2553009
OpenAlexW2057070563

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.