Evidence map›Paper›PMID 19012038›Full record

ArticleJournal of gastroenterology2008

Cloning, polymorphism, and inhibition of beta-carbonic anhydrase of Helicobacter pylori.

Saori Morishita, Isao Nishimori, Tomoko Minakuchi, Saburo Onishi, Hiroaki Takeuchi, Tetsuro Sugiura, Daniela Vullo, Andrea Scozzafava, Claudiu T Supuran

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Journal of gastroenterology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.6field-weighted citation impact, top 34% 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, 51 citations in OpenAlex.

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  6. Journal of enzyme inhibition and medicinal chemistry · 2020
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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

9 authors at 2 institutions in 2 countries.

Saori MorishitaDepartment of Gastroenterology and Hepatology, Kochi Medical School, Nankoku 783-8505, Japan.
Isao Nishimori
Tomoko Minakuchi
Saburo Onishi
Hiroaki Takeuchi
Tetsuro Sugiura
Daniela Vullo
Andrea Scozzafava
Claudiu T Supuran
Kochi Medical School Hospital · JPUniversity of Florence · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCarbonic anhydrase (CA) catalyzes the reversible hydration of CO(2) to bicarbonate and a proton, and alpha-class CA has been reported to facilitate the acid acclimation of Helicobacter pylori (hpalphaCA). The purpose of this study was to characterize the beta-class CA of H. pylori (hpbetaCA) and elucidate the role of this enzyme as a possible drug target for eradication therapy.

methodsWe isolated DNA clones of independent H. pylori strains obtained from patients with gastritis (n = 15), gastric ulcer (n = 6), or gastric cancer (n = 16), and then studied genetic polymorphisms. In addition, the susceptibility of H. pylori to sulpiride, an antiulcer drug and efficient inhibitor of both hpalphaCA and hpbetaCA, was studied with an in vitro killing assay.

resultsDNA sequences of all 37 hpbetaCA clones encoded a 221 amino acid polypeptide with a variety of polymorphisms (57 types of amino acid substitution at 48 residue positions). There was no polymorphism functionally relevant to the gastric lesion type. One strain included unique residues that were not seen in the other 36 clones from Japanese patients but which were found in a strain obtained from the United Kingdom. Sulpiride had killing effects at concentrations greater than 200 microg/ml for H. pylori, including strains resistant to clarithromycin, metronidazole, or ampicillin.

conclusionsHelicobacter pylori might have evolved independently in the Caucasian and Japanese populations. Dual inhibition of alpha-and beta-class CAs could be applied as alternative therapy for eradication of H. pylori.

Indexed as

Cloning, MolecularPolymorphism, GeneticCarbonic Anhydrase IICarbonic Anhydrase InhibitorsDNA, BacterialHelicobacter pyloriHumansPolymerase Chain ReactionSequence Analysis, DNASulpirideCarbonic Anhydrase IICarbonic Anhydrase InhibitorsDNA, BacterialSulpiride

Identifiers

PMID19012038
OpenAlexW2024241321

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.