Evidence map›Paper›PMID 9563070›Full record

ArticlePharmaceutical research1998

Possible role of anion exchanger AE2 as the intestinal monocarboxylic acid/anion antiporter.

H Yabuuchi, I Tamai, Y Sai, A Tsuji

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

6 citing papers in PubMed, 32 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

H YabuuchiDepartment of Pharmacobio-Dynamics, Faculty of Pharmaceutical Sciences, Kanazawa University, Japan.
I Tamai
Y Sai
A Tsuji
Kanazawa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of the present study was to investigate the transport of organic monocarboxylic acids mediated by the anion exchanger AE2, which has been already reported to be present at several tissue cell membranes, including intestinal brush border membrane in rabbit.

methodsMembrane transport of organic monocarboxylic acids by AE2 was investigated by transient AE2-gene expression in HEK 293 cells and subsequent uptake studies by the cells.

resultsFunctional transfection of AE2 was confirmed by the enhanced 36Cl- efflux from the cells. When preloaded with chloride anion. AE2-transfected cells demonstrated a significantly enhanced [14C]benzoic acid transport activity compared with mock-transfected cells. The AE2-mediated uptake was saturable with kinetic parameters of Km = 0.26 +/- 0.08 mM and Vmax = 6.14 +/- 0.52 nmol/mg protein/3 min and the uptake of [14C]benzoic acid was pH-dependent with a maximal uptake at pH 6.5. AE2-mediated [14C]benzoic acid uptake was inhibited by Cl-, HCO3-, and DIDS. AE2-transfected cells demonstrated significantly enhanced transport activity for nicotinic acid, propionic acid, butyric acid, and valproic acid as well as benzoic acid compared with mock-transfected cells.

conclusionsAE2 is functionally involved in the anion antiport for organic monocarboxylic acids as well as inorganic anions and is supposed to play a partial role in the intestinal transport of organic acids.

Indexed as

Anion Transport ProteinsAntiporters4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAcetic AcidAnimalsBenzoatesBenzoic AcidCell LineHydrogen-Ion ConcentrationIntestinal AbsorptionIntestinal MucosaIntestinesIon TransportMembrane ProteinsMiceMicrovilli4,4'-Diisothiocyanostilbene-2,2'-Disulfonic AcidAcetic AcidAnion Transport ProteinsAntiportersBenzoatesBenzoic AcidMembrane ProteinsNerve Tissue ProteinsSLC4A Proteins

Identifiers

PMID9563070
OpenAlexW174095185

What OpenQuestion holds

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Registered trials

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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.