Evidence map›Paper›PMID 23820740›Full record

ArticleNeuroreport2013

N-linked glycosylation of cortical N-methyl-D-aspartate and kainate receptor subunits in schizophrenia.

Janusz Tucholski, Micah S Simmons, Anita L Pinner, Laurence D McMillan, Vahram Haroutunian, James H Meador-Woodruff

Open access · greenAbstract read
In one paragraph

Article in Neuroreport, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Divergent sensory transcriptomic profiles in positive and negative learning in Bicyclus Anynana butterflies.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Dynamic glycosylation remodeling in neurological disorders.Frontiers in molecular neuroscience · 2025
    Review
  9. Review
  10. Article
  11. The dynamic brain N-glycome.Glycoconjugate journal · 2022
    Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Downregulated AKT-mTOR signaling pathway proteins in dorsolateral prefrontal cortex in Schizophrenia.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
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

6 authors at 1 institution in 1 country.

Janusz TucholskiDepartment of Psychiatry and Behavioral Neurobiology, University of Alabama at Birmingham, Birmingham, Alabama 35294-0017, USA. jtuchol@uab.edu
Micah S Simmons
Anita L Pinner
Laurence D McMillan
Vahram Haroutunian
James H Meador-Woodruff
University of Alabama at Birmingham · US

Funding

QUANTITATIVE ANALYSIS OF MICROVASCULAR CHANGES IN THE AGING BRAINP01AG002219 · NIA · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI HAROUTUNIAN, VAHRAM · 1985 to 2009
$19.2M
White Matter Abnormalities in SchizophreniaP50MH066392 · NIMH · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI BUXBAUM, JOSEPH D. · 2002 to 2012
$18.6M
Subcellular Glutamate Receptor Defects in SchizophreniaR01MH053327 · NIMH · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MEADOR-WOODRUFF, JAMES H · 1995 to 2015
$5.8M
Cortico-thalamic Glutamate/GABA mRNA in schizophreniaR01MH064673 · NIMH · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI HAROUTUNIAN, VAHRAM · 2003 to 2012
$3.4M
NIA NIH HHS P01 AG002219NIMH NIH HHS MH064673NIMH NIH HHS MH066392NIMH NIH HHS MH53327NIMH NIH HHS P50 MH066392NIMH NIH HHS R01 MH053327NIMH NIH HHS R01 MH064673
6 · The paper itself

Abstract

Dysfunctional glutamate neurotransmission has been implicated in the pathophysiology of schizophrenia. Abnormal expressions in schizophrenia of ionotropic glutamate receptors (iGluRs) and the proteins that regulate their trafficking have been found to be region and subunit specific in brain, suggesting that abnormal trafficking of iGluRs may contribute toward altered glutamatergic neurotransmission. The post-translational modification N-glycosylation of iGluR subunits can be used as a proxy for their intracellular localization. Receptor complexes assemble in the lumen of the endoplasmic reticulum, where N-glycosylation begins with the addition of N-linked oligomannose glycans, and is subsequently trimmed and replaced by more elaborate glycans while trafficking through the Golgi apparatus. Previously, we found abnormalities in N-glycosylation of the GluR2 AMPA receptor subunit in schizophrenia. Here, we investigated N-glycosylation of N-methyl-D-aspartate and kainate (KA) receptor subunits in the dorsolateral prefrontal cortex from patients with schizophrenia and a comparison group. We used enzymatic deglycosylation with two glycosidases: endoglycosidase H (Endo H), which removes immature high mannose-containing sugars, and peptide-N-glycosidase F (PNGase F), which removes all N-linked sugars. The NR1, NR2A, NR2B, GluR6, and KA2 subunits were all sensitive to treatment with Endo H and PNGase F. The GluR6 KA receptor subunit was significantly more sensitive to Endo H-mediated deglycosylation in schizophrenia, suggesting a larger molecular mass of N-linked high mannose and/or hybrid sugars on GluR6. This finding, taken with our previous work, suggests that a cellular mechanism underlying abnormal glutamate neurotransmission in schizophrenia may involve abnormal trafficking of both AMPA and KA receptors.

Indexed as

AgedCerebral CortexFemaleGlycosylationHumansKainic Acid ReceptorsMaleProtein TransportReceptors, N-Methyl-D-AspartateSchizophreniaKainic Acid ReceptorsReceptors, N-Methyl-D-Aspartate

Identifiers

PMID23820740
PMCPMC3919653
OpenAlexW2001702793

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.