Evidence map›Paper›PMID 1797321›Full record

ArticleBritish journal of pharmacology1991

Amantadine and sparteine inhibit ATP-regulated K-currents in the insulin-secreting beta-cell line, HIT-T15.

F M Ashcroft, A J Kerr, J S Gibson, B A Williams

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Article in British journal of pharmacology, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

9 citing papers in PubMed, 30 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 2 institutions in 1 country.

F M AshcroftUniversity Laboratory of Physiology, Oxford.
A J Kerr
J S Gibson
B A Williams
University of Oxford · GBJohn Radcliffe Hospital · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

1. The effects of pharmacological agents that potentiate insulin release were studied on ATP-regulated K-currents (K-ATP currents) in the insulin-secreting beta-cell line HIT-T15 by use of patch-clamp methods. 2. The tricyclic drug, 1-adamantanamine (amantadine), reversibly inhibited both whole-cell currents (with a Ki of 120 microM) and single channel currents in inside-out patches. This effect was principally due to an increase in a long closed state which reduced the channel open probability. The related compound, 1-adamantanol, in which the amino group is substituted by a hydroxyl one, did not inhibit K-ATP currents substantially. 3. The alkaloid, sparteine, reversibly inhibited both whole-cell K-ATP currents (Ki = 171 microM) and single channel currents in inside-out patches. 4. The results suggest that sparteine and amantadine can block the K-ATP channel from either side of the membrane and support the idea that at least part of the stimulatory effect of these agents on insulin secretion results from inhibition of this channel.

Indexed as

Adenosine TriphosphateAmantadineAnimalsCell LineCell MembraneClone CellsCricetinaeInsulinInsulin SecretionIslets of LangerhansKineticsPotassium ChannelsPotassium ChlorideSodium ChlorideSparteineAdenosine TriphosphateAmantadineInsulinPotassium ChannelsPotassium ChlorideSodium ChlorideSparteine

Identifiers

PMID1797321
PMCPMC1908241
OpenAlexW2059207671

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.