Evidence map›Paper›PMID 12393848›Full record

ArticleThe Journal of clinical investigation2002

Benzodiazepine-induced superoxide signals B cell apoptosis: mechanistic insight and potential therapeutic utility.

Neal B Blatt, Jeffrey J Bednarski, Roscoe E Warner, Francesco Leonetti, Kathryn M Johnson, Anthony Boitano, Raymond Yung, Bruce C Richardson, Kent J Johnson, Jonathan A Ellman and 2 more

Open access · greenAbstract read
In one paragraph

Article in The Journal of clinical investigation, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

36 citing papers in PubMed, 64 citations in OpenAlex.

  1. Article
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  4. Energy metabolism in health and diseases.Signal transduction and targeted therapy · 2025
    Review
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  12. Purified F-ATP synthase forms a CaNature communications · 2019
    Article
  13. Review
  14. Review
  15. Visualizing Mitochondrial FFrontiers in physiology · 2018
    Review
  16. Review
  17. 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

12 authors at 3 institutions in 1 country.

Neal B BlattDepartment of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA.
Jeffrey J Bednarski
Roscoe E Warner
Francesco Leonetti
Kathryn M Johnson
Anthony Boitano
Raymond Yung
Bruce C Richardson
Kent J Johnson
Jonathan A Ellman
Anthony W Opipari
Gary D Glick
University of Michigan–Ann Arbor · USUniversity of California, Berkeley · USCenter for Rheumatology · US

Funding

MECHANISTIC STUDIES OF PRO-APOPTOTIC BENZODIAZEPINESR01AI047450 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GLICK, GARY D. · 2000 to 2009
$2.4M
PRIVILEGED STRUCTURE LIBRARIESR01GM050353 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI ELLMAN, JONATHAN A. · 1994 to 2004
$1.0M
Mechanistic Studies of Pro-Apoptotic BenzodiazepinesR21AI047450 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI GLICK, GARY D · 2004 to 2004
$313k
NIAID NIH HHS AI 47450NIAID NIH HHS R01 AI047450NIAID NIH HHS R21 AI047450NIGMS NIH HHS GM 42168NIGMS NIH HHS GM 50353
6 · The paper itself

Abstract

The properties of a proapoptotic 1,4-benzodiazepine, Bz-423, identified through combinatorial chemistry and phenotype screening are described. Bz-423 rapidly generated superoxide (O(2)(-)) in transformed Ramos B cells. This O(2)(-) response originated from mitochondria prior to mitochondrial transmembrane gradient collapse and opening of the permeability transition pore. Bz-423-induced O(2)(-) functioned as an upstream signal that initiated an apoptotic program characterized by cytochrome c release, mitochondrial depolarization, and caspase activation. Pretreatment of cells with agents that either block the formation of Bz-423-induced O(2)(-) or scavenge free radicals attenuated the death cascade, which demonstrated that cell killing by Bz-423 depends on O(2)(-). Parallels between Ramos cells and germinal center B cells prompted experiments to determine whether Bz-423 had therapeutic activity in vivo. This possibility was tested using the (NZB x NZW)F(1) murine model of lupus, in which the pathologically enhanced survival and expansion of germinal center B cells mediate disease. Administration of Bz-423 for 12 weeks specifically controlled germinal center hyperplasia and reduced the histological evidence of glomerulonephritis. Collectively, these studies define a new structure-function relationship for benzodiazepines and point to a new target and mechanism that could be of value for developing improved drugs to manage systemic lupus erythematosus and related disorders.

Indexed as

AnimalsAntibodies, AntinuclearApoptosisBenzodiazepinesB-LymphocytesCell Line, TransformedFemaleHumansIn Vitro TechniquesLupus Erythematosus, SystemicMiceMice, Inbred NZBModels, BiologicalReactive Oxygen SpeciesSignal TransductionSuperoxidesAntibodies, AntinuclearBenzodiazepinesBz-423Reactive Oxygen SpeciesSuperoxides

Identifiers

PMID12393848
PMCPMC150800
OpenAlexW2117994321

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.