Evidence map›Paper›PMID 26878236›Full record

ArticleNature2016

Evidence from cyclostomes for complex regionalization of the ancestral vertebrate brain.

Fumiaki Sugahara, Juan Pascual-Anaya, Yasuhiro Oisi, Shigehiro Kuraku, Shin-ichi Aota, Noritaka Adachi, Wataru Takagi, Tamami Hirai, Noboru Sato, Yasunori Murakami and 1 more

Abstract read
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In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
–field-weighted citation impact
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

46 citing papers in PubMed.

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  13. ThreeFrontiers in cell and developmental biology · 2023
    Article
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  17. The Dopaminergic Control of Movement-Evolutionary Considerations.International journal of molecular sciences · 2021
    Review
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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

11 authors.

Fumiaki SugaharaEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.
Juan Pascual-AnayaEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.
Yasuhiro OisiDevelopment and Function of Inhibitory Neural Circuits, Max Planck Florida Institute for Neuroscience, Jupiter, Florida 33458, USA.
Shigehiro KurakuPhyloinformatics Unit, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan.
Shin-ichi AotaEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.
Noritaka AdachiDepartment of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois 60637, USA.
Wataru TakagiEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.
Tamami HiraiEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.
Noboru SatoDivision of Gross Anatomy and Morphogenesis, Niigata University Graduate School of Medical and Dental Sciences, Niigata 950-8510, Japan.
Yasunori MurakamiGraduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan.
Shigeru KurataniEvolutionary Morphology Laboratory, RIKEN, Kobe 650-0047, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The vertebrate brain is highly complex, but its evolutionary origin remains elusive. Because of the absence of certain developmental domains generally marked by the expression of regulatory genes, the embryonic brain of the lamprey, a jawless vertebrate, had been regarded as representing a less complex, ancestral state of the vertebrate brain. Specifically, the absence of a Hedgehog- and Nkx2.1-positive domain in the lamprey subpallium was thought to be similar to mouse mutants in which the suppression of Nkx2-1 leads to a loss of the medial ganglionic eminence. Here we show that the brain of the inshore hagfish (Eptatretus burgeri), another cyclostome group, develops domains equivalent to the medial ganglionic eminence and rhombic lip, resembling the gnathostome brain. Moreover, further investigation of lamprey larvae revealed that these domains are also present, ruling out the possibility of convergent evolution between hagfish and gnathostomes. Thus, brain regionalization as seen in crown gnathostomes is not an evolutionary innovation of this group, but dates back to the latest vertebrate ancestor before the divergence of cyclostomes and gnathostomes more than 500 million years ago.

Indexed as

PhylogenyAnimalsBrainFemaleHagfishesHumansLampreysLarvaMaleMiceMolecular Sequence DataSynteny

Identifiers

PMID26878236

What OpenQuestion holds

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Registered trials

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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.