Evidence map›Paper›PMID 33385111›Full record

ArticleiScience2021

Densities and numbers of calbindin and parvalbumin positive neurons across the rat and mouse brain.

Ingvild E Bjerke, Sharon C Yates, Arthur Laja, Menno P Witter, Maja A Puchades, Jan G Bjaalie, Trygve B Leergaard

Open access · goldAbstract read
In one paragraph

Article in iScience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
3.5field-weighted citation impact, top 6% 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

44 citing papers in PubMed, 70 citations in OpenAlex.

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  7. Modular inhibitory coding in binary networks.Frontiers in network physiology · 2026
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  16. Synaptic Vesicle Glycoprotein 2A Knockout in Parvalbumin and Somatostatin Interneurons Drives Seizures in the Postnatal Mouse Brain.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
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  18. Brain connectome from neuronal morphology.Network neuroscience (Cambridge, Mass.) · 2025
    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

7 authors at 2 institutions in 1 country.

Ingvild E BjerkeDepartment of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
Sharon C YatesDepartment of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
Arthur LajaKavli Institute for Systems Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway.
Menno P WitterKavli Institute for Systems Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway.
Maja A PuchadesDepartment of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
Jan G BjaalieDepartment of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
Trygve B LeergaardDepartment of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
University of Oslo · NONorwegian University of Science and Technology · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The calcium-binding proteins parvalbumin and calbindin are expressed in neuronal populations regulating brain networks involved in spatial navigation, memory processes, and social interactions. Information about the numbers of these neurons across brain regions is required to understand their functional roles but is scarcely available. Employing semi-automated image analysis, we performed brain-wide analysis of immunohistochemically stained parvalbumin and calbindin sections and show that these neurons distribute in complementary patterns across the mouse brain. Parvalbumin neurons dominate in areas related to sensorimotor processing and navigation, whereas calbindin neurons prevail in regions reflecting behavioral states. We also find that parvalbumin neurons distribute according to similar principles in the hippocampal region of the rat and mouse brain. We validated our results against manual counts and evaluated variability of results among researchers. Comparison of our results to previous reports showed that neuron numbers vary, whereas patterns of relative densities and numbers are consistent.

Indexed as

Cellular NeuroscienceHistologyImaging AnatomyMolecular NeuroscienceOptical Imaging

Identifiers

PMID33385111
PMCPMC7770605
OpenAlexW3111449295

What OpenQuestion holds

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LicenceCC BY
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.