Evidence map›Paper›PMID 1317913›Full record

ArticleThe Journal of general physiology1992

Aminoglycoside antibiotics block voltage-dependent calcium channels in intact vertebrate nerve terminals.

T D Parsons, A L Obaid, B M Salzberg

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of general physiology, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 30% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

3 authors at 1 institution in 1 country.

T D ParsonsDepartment of Physiology, School of Medicine, University of Pennsylvania, Philadelphia 19104-6085.
A L Obaid
B M Salzberg
University of Pennsylvania · US

Funding

MULTIPLE-SITE OPTICAL RECORDING OF MEMBRANE POTENTIALR01NS016824 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI SALZBERG, BRIAN MATTHEW · 1985 to 2009
$3.3M
CARDIOVASCULAR TRAINING IN ELECTRON OPTICAL RESEARCHT32HL007499 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI SANGER, JOSEPH · 1985 to 1990
–
NHLBI NIH HHS HL-07499NINDS NIH HHS NS-16824
6 · The paper itself

Abstract

Intrinsic and extrinsic optical signals recorded from the intact nerve terminals of vertebrate neurohypophyses were used to investigate the anatomical site and physiological mechanism of the antagonistic effects of aminoglycoside antibiotics on neurotransmission. Aminoglycoside antibiotics blocked the intrinsic light scattering signal closely associated with neurosecretion in the mouse neurohypophysis in a concentration-dependent manner with an IC50 of approximately 60 microM and the block was relieved by increasing [Ca2+]o. The rank order potency of different aminoglycoside antibiotics for blocking neurosecretion in this preparation was determined to be: neomycin greater than gentamicin = kanamycin greater than streptomycin. Optical recordings of rapid changes in membrane potential using voltage-sensitive dyes revealed that aminoglycoside antibiotics decreased the Ca(2+)-dependent after-hyperpolarization of the normal action potential and both the magnitude and after-hyperpolarization of the regenerative Ca2+ spike. The after-hyperpolarization results from a Ca-activated potassium conductance whose block by aminoglycoside antibiotics was also reversed by increased [Ca2+]o. These studies demonstrate that the capacity of aminoglycoside antibiotics to antagonize neurotransmission can be attributed to the block of Ca channels in the nerve terminal.

Indexed as

AminoglycosidesAnimalsAnti-Bacterial AgentsBiological TransportCalciumCalcium ChannelsDose-Response Relationship, DrugElectric ConductivityHypothalamusMembrane PotentialsNerve EndingsPotassiumSynaptic TransmissionAminoglycosidesAnti-Bacterial AgentsCalciumCalcium ChannelsPotassium

Identifiers

PMID1317913
PMCPMC2219205
OpenAlexW2037429881

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.