Evidence map›Paper›PMID 1722118›Full record

ArticleBiophysical journal1991

Hydrogen ion currents in rat alveolar epithelial cells.

T E DeCoursey

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed
2.8field-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

70 citing papers in PubMed, 135 citations in OpenAlex.

  1. Article
  2. Transcendent Aspects of Proton Channels.Annual review of physiology · 2024
    Review
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. The voltage sensor is responsible for ΔpH dependence in HProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  10. Review
  11. Article
  12. Hydrophobic gasket mutation produces gating pore currents in closed human voltage-gated proton channels.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  13. Article
  14. HistidineThe Journal of general physiology · 2018
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Molecular mechanism of Zn2+ inhibition of a voltage-gated proton channel.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  20. Review

10 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

T E DeCourseyDepartment of Physiology, Rush Presbyterian St. Luke's Medical Center, Chicago, Illinois 60612.
Rush University Medical Center · US

Funding

PULMONARY TYPE II EPITHELIAL CELLS--ROLE OF ION CHANNELSR01HL037500 · NHLBI · RUSH UNIVERSITY MEDICAL CENTER · PI DECOURSEY, THOMAS E · 1987 to 1991
–
NHLBI NIH HHS HL37500PHS HHS K04-1928
6 · The paper itself

Abstract

Alveolar epithelial cells isolated from rats and maintained in primary culture were studied using the whole-cell configuration of the "patch-clamp" technique. After other ionic conductances were eliminated by replacing permeant ions with N-methyl-D-glucamine methanesulfonate, large voltage-activated hydrogen-selective currents were observed. Like H+ currents in snail neurons and axolotl oocytes, those in alveolar epithelium are activated by depolarization, deactivate upon repolarization, and are inhibited by Cd2+ and Zn2+. Activation of H+ currents is slower in alveolar epithelium than in other tissues, and often has a sigmoid time course. Activation occurs at more positive potentials when external pH is decreased. Saturation of the currents suggests that diffusion limitation may occur; increasing the pipette buffer concentration from 5 to 120 mM at a constant pH of 5.5 increased the maximum current density from 8.7 to 27.3 pA/pF, indicating that the current amplitude can be limited in 5 mM buffer solutions by the rate at which buffer molecules can supply H+ to the membrane. These data indicate that voltage-dependent H+ currents exist in mammalian cells.

Indexed as

AnimalsBiophysical PhenomenaBiophysicsElectrophysiologyEpithelial CellsEpitheliumHydrogen-Ion ConcentrationIn Vitro TechniquesIon Channel GatingIon ChannelsProtonsPulmonary AlveoliRatsIon ChannelsProtons

Identifiers

PMID1722118
PMCPMC1260178
OpenAlexW2006404213

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.