Evidence map›Paper›PMID 31800363›Full record

ArticleJournal of neurophysiology2020

GABA bouton subpopulations in the human dentate gyrus are differentially altered in mesial temporal lobe epilepsy.

Ahmad Alhourani, Kenneth N Fish, Thomas A Wozny, Vivek Sudhakar, Ronald L Hamilton, R Mark Richardson

Open access · bronzeAbstract read
In one paragraph

Article in Journal of neurophysiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 26% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. 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
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Synaptic Reshaping and Neuronal Outcomes in the Temporal Lobe Epilepsy.International journal of molecular sciences · 2021
    Review
  15. Sharp Wave Ripples in Alzheimer's Disease: In Search of Mechanisms.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  16. Review
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  19. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Ahmad AlhouraniDepartment of Neurological Surgery, University of Louisville School of Medicine, Louisville, Kentucky.ORCID 0000-0002-3523-6131
Kenneth N FishDepartment of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Thomas A WoznyDepartment of Neurological Surgery, University of California, San Francisco, California.
Vivek SudhakarDepartment of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Ronald L HamiltonDepartment of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
R Mark RichardsonDepartment of Neurological Surgery, Massachusetts General Hospital, Boston, Massachusetts.ORCID 0000-0003-2620-7387
University of Pittsburgh · USHarvard University · USUniversity of California, San Francisco · USUniversity of Louisville · US

Funding

University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
NCATS NIH HHS UL1 TR000005
6 · The paper itself

Abstract

Medically intractable temporal lobe epilepsy is a devastating disease, for which surgical removal of the seizure onset zone is the only known cure. Multiple studies have found evidence of abnormal dentate gyrus network circuitry in human mesial temporal lobe epilepsy (MTLE). Principal neurons within the dentate gyrus gate entorhinal input into the hippocampus, providing a critical step in information processing. Crucial to that role are GABA-expressing neurons, particularly parvalbumin (PV)-expressing basket cells (PVBCs) and chandelier cells (PVChCs), which provide strong, temporally coordinated inhibitory signals. Alterations in PVBC and PVChC boutons have been described in epilepsy, but the value of these studies has been limited due to methodological hurdles associated with studying human tissue. We developed a multilabel immunofluorescence confocal microscopy and a custom segmentation algorithm to quantitatively assess PVBC and PVChC bouton densities and to infer relative synaptic protein content in the human dentate gyrus. Using en bloc specimens from MTLE subjects with and without hippocampal sclerosis, paired with nonepileptic controls, we demonstrate the utility of this approach for detecting cell-type specific synaptic alterations. Specifically, we found increased density of PVBC boutons, while PVChC boutons decreased significantly in the dentate granule cell layer of subjects with hippocampal sclerosis compared with matched controls. In contrast, bouton densities for either PV-positive cell type did not differ between epileptic subjects without sclerosis and matched controls. These results may explain conflicting findings from previous studies that have reported both preserved and decreased PV bouton densities and establish a new standard for quantitative assessment of interneuron boutons in epilepsy.

Indexed as

ParvalbuminsAdultDentate GyrusDrug Resistant EpilepsyEpilepsy, Temporal LobeFemaleGABAergic NeuronsHumansInterneuronsMaleMicroscopy, FluorescenceMiddle AgedPresynaptic TerminalsSclerosisParvalbuminsbasket cellchandelier celldentate gyrusepilepsyinterneuron

Identifiers

PMID31800363
PMCPMC6985857
OpenAlexW2993535714

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.