Evidence map›Paper›PMID 11292739›Full record

ArticleInfection and immunity2001

Apoptotic signaling pathway activated by Helicobacter pylori infection and increase of apoptosis-inducing activity under serum-starved conditions.

K Shibayama, Y Doi, N Shibata, T Yagi, T Nada, Y Iinuma, Y Arakawa

Abstract readCase Reports
In one paragraph

Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
6.4field-weighted citation impact, top 3% 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

23 citing papers in PubMed, 55 citations in OpenAlex.

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  12. Serum-free culture of H pylori intensifies cytotoxicity.World journal of gastroenterology · 2007
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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

7 authors at 2 institutions in 1 country.

K ShibayamaDepartment of Bacterial and Blood Products, National Institute of Infectious Diseases, Tokyo 208-0011, Japan. keigo@nih.go.jp
Y Doi
N Shibata
T Yagi
T Nada
Y Iinuma
Y Arakawa
National Institute of Infectious Diseases · JPNagoya University Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The enhanced gastric epithelial cell apoptosis observed during infection with Helicobacter pylori has been suggested to be of significance in the etiology of gastritis, peptic ulcers, and neoplasia. To investigate the cell death signaling induced by H. pylori infection, human gastric epithelial cells were incubated with H. pylori for up to 72 h. H. pylori infection induced the activation of caspase -8, -9, and -3 and the expression of the proapoptotic Bcl-2 family proteins Bad and Bid. The peak of the activity of the caspases occurred at 24 h. At this time, the inhibition of caspase-8 or -9 almost completely suppressed H. pylori-induced apoptosis. Inhibition of caspase-8 suppressed the expression of Bad and Bid and the subsequent activation of caspase-9 and -3. These observations indicate that H. pylori induces apoptosis through a pathway involving the sequential induction of apical caspase-8 activity, the proapoptotic proteins Bad and Bid, caspase-9 activity, and effector caspase-3 activity. Activation of the pathway was independent of CagA or vacuolating toxin. A membrane fraction of H. pylori was sufficient to activate this pathway, and treatment with proteinase K eliminated the activity. Apoptotic activity of the membrane fraction was significantly increased by incubating the bacteria under serum-starved conditions for 24 h. These observations suggest that environmental conditions in the human stomach could induce H. pylori-mediated pathogenesis, leading to a variety of clinical outcomes.

Indexed as

Apoptosisbcl-Associated Death ProteinBH3 Interacting Domain Death Agonist ProteinBlood Physiological PhenomenaCarrier ProteinsCaspasesEnzyme ActivationFemaleHelicobacter InfectionsHelicobacter pyloriHumansMaleMiddle AgedOligopeptidesBAD protein, humanbcl-Associated Death Proteinbenzyloxycarbonyl-isoleucyl-glutamyl-threonyl-aspartic acid fluoromethyl ketonebenzyloxycarbonyl-leucyl-glutamyl-histidyl-aspartic acid fluoromethyl ketoneBH3 Interacting Domain Death Agonist ProteinBID protein, humanCarrier ProteinsCaspasesOligopeptides

Identifiers

PMID11292739
PMCPMC98275
OpenAlexW2102261966

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.