Evidence map›Paper›PMID 20575059›Full record

ArticleThe Journal of comparative neurology2010

Molecular analysis of neocortical layer structure in the ferret.

Joanna J Rowell, Atul K Mallik, Jennifer Dugas-Ford, Clifton W Ragsdale

Abstract read
In one paragraph

Article in The Journal of comparative neurology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

28 citing papers in PubMed, 55 citations in OpenAlex.

  1. Temporal Transcriptional Regulation of Human Neuronal Differentiation via Forward Programming.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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  8. Structure and function of neocortical layer 6b.Frontiers in cellular neuroscience · 2023
    Review
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  12. Review
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  16. Review
  17. Molecular anatomy of the alligator dorsal telencephalon.The Journal of comparative neurology · 2018
    Article
  18. Article
  19. 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

4 authors at 1 institution in 1 country.

Joanna J RowellDepartment of Neurobiology, University of Chicago, Chicago, Illinois 60637, USA.
Atul K Mallik
Jennifer Dugas-Ford
Clifton W Ragsdale
University of Chicago · US

Funding

MOLECULAR BIOLOGY OF OCULOMOTOR SYSTEM DEVELOPMENTR01EY016838 · NEI · UNIVERSITY OF CHICAGO · PI RAGSDALE, CLIFTON W. · 2006 to 2010
$1.5M
NEI NIH HHS R01 EY016838
6 · The paper itself

Abstract

Molecular markers that distinguish specific layers of rodent neocortex are increasingly employed to study cortical development and the physiology of cortical circuits. The extent to which these markers represent general features of neocortical cell type identity across mammals, however, is unknown. To assess the conservation of layer markers more broadly, we isolated orthologs for 15 layer-enriched genes in the ferret, a carnivore with a large, gyrencephalic brain, and analyzed their patterns of neocortical gene expression. Our major findings are: 1) Many but not all layer markers tested show similar patterns of layer-specific gene expression between mouse and ferret cortex, supporting the view that layer-specific cell type identity is conserved at a molecular level across mammalian superorders; 2) Our panel of deep layer markers (ER81/ETV1, SULF2, PCP4, FEZF2/ZNF312, CACNA1H, KCNN2/SK2, SYT6, FOXP2, CTGF) provides molecular evidence that the specific stratifications of layers 5 and 6 into 5a, 5b, 6a, and 6b are also conserved between rodents and carnivores; 3) Variations in layer-specific gene expression are more pronounced across areas of ferret cortex than between homologous areas of mouse and ferret cortex; 4) This variation of area gene expression was clearest with the superficial layer markers studied (SERPINE2, MDGA1, CUX1, UNC5D, RORB/NR1F2, EAG2/KCNH5). Most dramatically, the layer 4 markers RORB and EAG2 disclosed a molecular sublamination to ferret visual cortex and demonstrated a molecular dissociation among the so-called agranular areas of the neocortex. Our findings establish molecular markers as a powerful complement to cytoarchitecture for neocortical layer and cell-type comparisons across mammals.

Indexed as

AnimalsBiomarkersFemaleFerretsGene ExpressionHumansIn Situ HybridizationMaleMiceNeocortexNerve Tissue ProteinsPhylogenyBiomarkersNerve Tissue Proteins

Identifiers

PMID20575059
PMCPMC2894274
OpenAlexW2123003185

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.