Evidence mapPaperPMID 28074482Full record

Trial reportBritish journal of clinical pharmacology2017

Remote ischaemic preconditioning suppresses endogenous plasma nitrite during ischaemia-reperfusion: a randomized controlled crossover pilot study.

Ashok Nair, Sitara Khan, Sami Omar, Xiao-Qing Pei, Karen McNeill, Phil Chowienczyk, Andrew James Webb

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in British journal of clinical pharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

3 citing papers in PubMed, 6 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
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

7 authors at 5 institutions in 2 countries.

Ashok NairKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Sitara KhanKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Sami OmarKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Xiao-Qing PeiKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Karen McNeillKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Phil ChowienczykKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
Andrew James WebbKing's College London British Heart Foundation Centre, Cardiovascular Division, Department of Clinical Pharmacology, St. Thomas' Hospital, London, SE1 7EH, UK.
British Heart Foundation · GBGuy's and St Thomas' NHS Foundation Trust · GBKing's College London · GBSt Thomas' Hospital · GBSun Yat-sen University · CN

Funding

British Heart Foundation FS/12/9/29233
6 · The paper itself

Abstract

aimThe aim of this article is to test the hypothesis that remote ischaemic preconditioning (RIPC) increases circulating endogenous local and systemic plasma (nitrite) during RIPC and ischaemia-reperfusion (IR) as a potential protective mechanism against ischaemia-reperfusion injury (IRI).

methodsSix healthy male volunteers (mean age 29.5 ± 7.6 years) were randomized in a crossover study to initially receive either RIPC (4 × 5 min cycles) to the left arm, or no RIPC (control), both followed by an ischaemia-reperfusion (IR) sequence (20 min cuff inflation to 200 mmHg, 20 min reperfusion) to the right arm. The volunteers returned at least 7 days later for the alternate intervention. The primary outcome was the effect of RIPC vs. control on local and systemic plasma (nitrite).

resultsRIPC did not significantly change plasma (nitrite) in either the left or the right arm during the RIPC sequence. However, compared to control, RIPC decreased plasma (nitrite) during the subsequent IR sequence by ~26% (from 118 ± 9 to 87 ± 5 nmol l

conclusionsRIPC had no effect on plasma (nitrite) during the RIPC sequence, but instead decreased plasma (nitrite) by ~25% during IR. This would likely counteract the protective mechanisms of RIPC, and contribute to RIPC's lack of efficacy, as observed in recent clinical trials. A combined approach of RIPC with nitrite administration may be required.

Indexed as

AdultCross-Over StudiesHealthy VolunteersHumansIschemiaIschemic PreconditioningMaleNitritesPilot ProjectsProspective StudiesReperfusion InjuryYoung AdultNitritesischaemia reperfusionnitriteremote ischaemic preconditioning

Identifiers

PMID28074482
PMCPMC5465344
OpenAlexW2752553621

What Socratic 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 Socratic graph.