Evidence map›Paper›PMID 25788676›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2015

Mutations in the microtubule-associated protein 1A (Map1a) gene cause Purkinje cell degeneration.

Ye Liu, Jeong Woong Lee, Susan L Ackerman

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 10% 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, 2 syntheses or guidelines pooled it, 57 citations in OpenAlex.

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  18. Polymorphism ofIBRO neuroscience reports · 2023
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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

3 authors at 1 institution in 1 country.

Ye LiuHoward Hughes Medical Institute, The Jackson Laboratory, Bar Harbor, Maine 04609.ORCID http://orcid.org/0000-0001-8599-964X
Jeong Woong LeeHoward Hughes Medical Institute, The Jackson Laboratory, Bar Harbor, Maine 04609.
Susan L AckermanHoward Hughes Medical Institute, The Jackson Laboratory, Bar Harbor, Maine 04609 susan.ackerman@jax.org.ORCID http://orcid.org/0000-0002-6740-593X
Howard Hughes Medical Institute · US

Funding

Shared Resource ManagementP30CA034196 · NCI · JACKSON LABORATORY · PI William Carl Skarnes · 1985 to 2026
$61.9M
Mouse Mutant ResourceP40OD010972 · OD · JACKSON LABORATORY · PI BERGSTROM, DAVID ERIC, REINHOLDT, LAURA G · 2012 to 2015
$3.4M
Howard Hughes Medical InstituteNCI NIH HHS P30 CA034196NIH HHS OD10972NIH HHS P40 OD010972
6 · The paper itself

Abstract

The structural microtubule-associated proteins (MAPs) are critical for the organization of neuronal microtubules (MTs). Microtubule-associated protein 1A (MAP1A) is one of the most abundantly expressed MAPs in the mammalian brain. However, its in vivo function remains largely unknown. Here we describe a spontaneous mouse mutation, nm2719, which causes tremors, ataxia, and loss of cerebellar Purkinje neurons in aged homozygous mice. The nm2719 mutation disrupts the Map1a gene. We show that targeted deletion of mouse Map1a gene leads to similar neurodegenerative defects. Before neuron death, Map1a mutant Purkinje cells exhibited abnormal focal swellings of dendritic shafts and disruptions in axon initial segment (AIS) morphology. Furthermore, the MT network was reduced in the somatodendritic and AIS compartments, and both the heavy and light chains of MAP1B, another brain-enriched MAP, was aberrantly distributed in the soma and dendrites of mutant Purkinje cells. MAP1A has been reported to bind to the membrane-associated guanylate kinase (MAGUK) scaffolding proteins, as well as to MTs. Indeed, PSD-93, the MAGUK specifically enriched in Purkinje cells, was reduced in Map1a(-/-) Purkinje cells. These results demonstrate that MAP1A functions to maintain both the neuronal MT network and the level of PSD-93 in neurons of the mammalian brain.

Indexed as

AnimalsBrainMiceMice, Inbred C57BLMice, KnockoutMice, TransgenicMicrotubule-Associated ProteinsMutationNerve DegenerationNerve NetPurkinje CellsMAP1A protein, mouseMicrotubule-Associated ProteinscerebellumDlg2MAP1AmicrotubuleneurodegenerationPurkinje cell

Identifiers

PMID25788676
PMCPMC4363387
OpenAlexW2089121197

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.