Evidence map›Paper›PMID 18973287›Full record

ArticleJournal of medicinal chemistry2008

Structural requirements for eszopiclone and zolpidem binding to the gamma-aminobutyric acid type-A (GABAA) receptor are different.

Susan M Hanson, Elaine V Morlock, Kenneth A Satyshur, Cynthia Czajkowski

Open access · greenAbstract read
In one paragraph

Article in Journal of medicinal chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

53 citing papers in PubMed, 201 citations in OpenAlex.

  1. Characterisation of the contribution of the GABA-benzodiazepine α1 receptor subtype to [(11)C]Ro15-4513 PET images.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2012
    Trial
  2. Zolpidem restores sleep and decreases amyloid in a mouse model.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Synthesis of imidazo[1,2-Beilstein journal of organic chemistry · 2023
    Article
  11. Review
  12. In Silico Screening of Novel α1-GABAInternational journal of molecular sciences · 2021
    Article
  13. Regulation of GABATrends in neurosciences · 2021
    Review
  14. Article
  15. Synthesis and anticancer activity of bis(2-arylimidazo[1,2-Beilstein journal of organic chemistry · 2020
    Article
  16. Review
  17. Article
  18. IRSC advances · 2019
    Article
  19. The role of loops B and C in determining the potentiation of GABAPharmacology research & perspectives · 2018
    Article
  20. Agonists of the γ-aminobutyric acid type B (GABABioorganic & medicinal chemistry letters · 2018
    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

4 authors at 1 institution in 1 country.

Susan M HansonDepartment of Physiology and Program in Molecular and Cellular Pharmacology, University of Wisconsin Madison, Madison, Wisconsin 53711, USA.
Elaine V Morlock
Kenneth A Satyshur
Cynthia Czajkowski
University of Wisconsin–Madison · US

Funding

STRUCTURE OF THE GABA A RECEPTOR BINDING SITESR01NS034727 · NINDS · UNIVERSITY OF WISCONSIN-MADISON · PI CZAJKOWSKI, CYNTHIA M · 1997 to 2016
$6.1M
Training Program In Molecular AND Cellular PharmacologyT32GM008688 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI AUDHYA, ANJON · 1998 to 2020
$6.0M
Structure of the GABA-A Receptor Binding SitesR56NS034727 · NINDS · UNIVERSITY OF WISCONSIN-MADISON · PI CZAJKOWSKI, CYNTHIA M · 2012 to 2012
$513k
Structural Requirements for Benzodiazepine Modulation of GABA-A ReceptorsF32MH082504 · NIMH · UNIVERSITY OF WISCONSIN-MADISON · PI HANSON, SUSAN M · 2007 to 2008
$97k
NIGMS NIH HHS GM008688NIGMS NIH HHS T32 GM008688NIMH NIH HHS F32 MH082504NINDS NIH HHS NS34727NINDS NIH HHS R01 NS034727NINDS NIH HHS R56 NS034727
6 · The paper itself

Abstract

The sleep-aids zolpidem and eszopiclone exert their effects by binding to and modulating gamma-aminobutyric acid type-A receptors (GABA(A)Rs), but little is known about the structural requirements for their actions. We made 24 cysteine mutations in the benzodiazepine (BZD) binding site of alpha(1)beta(2)gamma(2) GABA(A)Rs and measured zolpidem, eszopiclone, and BZD-site antagonist binding. Mutations in gamma(2)loop D and alpha(1)loops A and B altered the affinity of all ligands tested, indicating that these loops are important for BZD pocket structural integrity. In contrast, gamma(2)loop E and alpha(1)loop C mutations differentially affected ligand affinity, suggesting that these loops are important for ligand selectivity. In agreement with our mutagenesis data, eszopiclone docking yielded a single model stabilized by several hydrogen bonds. Zolpidem docking yielded three equally populated orientations with few polar interactions, suggesting that unlike eszopiclone, zolpidem relies more on shape recognition of the binding pocket than on specific residue interactions and may explain why zolpidem is highly alpha(1)- and gamma(2)-subunit selective.

Indexed as

Azabicyclo CompoundsBenzodiazepinesBinding SitesCell LineComputer SimulationCysteineDNA Mutational AnalysisEszopicloneGABA-A Receptor AgonistsHumansHydrogen BondingLigandsModels, ChemicalModels, MolecularMutagenesis, Site-DirectedPiperazinesAzabicyclo CompoundsBenzodiazepinesCysteineEszopicloneGABA-A Receptor AgonistsLigandsPiperazinesPyridinesReceptors, GABA-AZolpidem

Identifiers

PMID18973287
PMCPMC2645942
OpenAlexW2073905010

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.