Evidence map›Paper›PMID 22269040›Full record

ArticleJournal of neurochemistry2012

Hippocampal expression of myelin-associated inhibitors is induced with age-related cognitive decline and correlates with deficits of spatial learning and memory.

Heather D Vanguilder, Georgina V Bixler, William E Sonntag, Willard M Freeman

Abstract readComparative Study
In one paragraph

Article in Journal of neurochemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.9field-weighted citation impact, top 7% 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

26 citing papers in PubMed, 52 citations in OpenAlex.

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  12. CNS-wide Sexually Dimorphic Induction of the Major Histocompatibility Complex 1 Pathway With Aging.The journals of gerontology. Series A, Biological sciences and medical sciences · 2017
    Article
  13. Article
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  15. Review
  16. Age-dependent decline of nogo-a protein in the mouse cerebrum.Cellular and molecular neurobiology · 2014
    Article
  17. Article
  18. Effects of YC-1 on learning and memory functions of aged rats.Medical science monitor basic research · 2014
    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 2 institutions in 1 country.

Heather D VanguilderDepartment of Pharmacology, R130, Hershey Center for Applied Research, Penn State College of Medicine, Hershey, PA 17033, USA.
Georgina V Bixler
William E Sonntag
Willard M Freeman
Penn State Milton S. Hershey Medical Center · USUniversity of Oklahoma Health Sciences Center · US

Funding

STRUCTURAL AND MOLECULAR CHANGES WITH AGEP01AG011370 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI SONNTAG, WILLIAM EDMUND · 1995 to 2010
$10.7M
Cognitive Decline & Protein Expression Profiles in AgingR01AG026607 · NIA · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI SONNTAG, WILLIAM EDMUND · 2007 to 2011
$1.8M
NIA NIH HHS P01 AG011370NIA NIH HHS P01AG11370NIA NIH HHS R01 AG026607NIA NIH HHS R01AG026607
6 · The paper itself

Abstract

Impairment of cognitive functions including hippocampus-dependent spatial learning and memory affects nearly half of the aged population. Age-related cognitive decline is associated with synaptic dysfunction that occurs in the absence of neuronal cell loss, suggesting that impaired neuronal signaling and plasticity may underlie age-related deficits of cognitive function. Expression of myelin-associated inhibitors (MAIs) of synaptic plasticity, including the ligands myelin-associated glycoprotein, neurite outgrowth inhibitor A, and oligodendrocyte myelin glycoprotein, and their common receptor, Nogo-66 receptor, was examined in hippocampal synaptosomes and Cornu ammonis area (CA)1, CA3 and dentate gyrus subregions derived from adult (12-13 months) and aged (26-28 months) Fischer 344 × Brown Norway rats. Rats were behaviorally phenotyped by Morris water maze testing and classified as aged cognitively intact (n = 7-8) or aged cognitively impaired (n = 7-10) relative to adults (n = 5-7). MAI protein expression was induced in cognitively impaired, but not cognitively intact, aged rats and correlated with cognitive performance in individual rats. Immunohistochemical experiments demonstrated that up-regulation of MAIs occurs, in part, in hippocampal neuronal axons and somata. While a number of pathways and processes are altered with brain aging, we report a coordinated induction of myelin-associated inhibitors of functional and structural plasticity only in cognitively impaired aged rats. Induction of MAIs may decrease stimulus-induced synaptic strengthening and structural remodeling, ultimately impairing synaptic mechanisms of spatial learning and memory and resulting in cognitive decline.

Indexed as

AgingAnimalsCognition DisordersHippocampusMaleMaze LearningMemory DisordersMyelin-Associated GlycoproteinMyelin ProteinsNogo ProteinsRatsRats, Inbred BNRats, Inbred F344Myelin-Associated GlycoproteinMyelin ProteinsNogo ProteinsRtn4 protein, rat

Identifiers

PMID22269040
PMCPMC3341628
OpenAlexW1723906651

What OpenQuestion holds

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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.