Evidence map›Paper›PMID 18242584›Full record

Trial reportBiological psychiatry2008

Peripheral inflammation is associated with altered substantia nigra activity and psychomotor slowing in humans.

Lena Brydon, Neil A Harrison, Cicely Walker, Andrew Steptoe, Hugo D Critchley

Registry-linked trialOpen access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Biological psychiatry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02628054 (Investigating the Effects of Typhoid Vaccine on Sleep in Healthy Volunteers), which is not on this map. Cited by 193 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
193citing papers in PubMed, 2 pooled it
11.1field-weighted citation impact, top 2% 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.

NCT02628054 nacompletednot on this mapstarted 2015, after this paper: background citation

Investigating the Effects of Typhoid Vaccine on Sleep in Healthy Volunteers

TypeinterventionalSponsorUniversity of OxfordRan2015 to 2015Enrolled16ConditionsTyphoid Vaccine on SleepArmsTyphoid Vaccine, Placebo
3 · Its place in the literature

Who cites it

193 citing papers in PubMed, 2 syntheses or guidelines pooled it, 382 citations in OpenAlex.

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  7. Inflammatory Biomarkers Predict Domain-Specific Cognitive Decline in Older Adults.The journals of gerontology. Series A, Biological sciences and medical sciences · 2017
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  11. Effects of inflammation on hippocampus and substantia nigra responses to novelty in healthy human participants.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2015
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  17. Glucose metabolism in the insula and cingulate is affected by systemic inflammation in humans.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2012
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133 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

5 authors at 3 institutions in 1 country.

Lena BrydonDepartment of Epidemiology and Public Health, Institute of Neurology at University College London, London, United Kingdom. l.brydon@ucl.ac.uk
Neil A Harrison
Cicely Walker
Andrew Steptoe
Hugo D Critchley
University College London · GBBrighton and Sussex Medical School · GBWellcome Centre for Human Neuroimaging · GB

Funding

British Heart FoundationWellcome Trust
6 · The paper itself

Abstract

backgroundSystemic infections commonly cause sickness symptoms including psychomotor retardation. Inflammatory cytokines released during the innate immune response are implicated in the communication of peripheral inflammatory signals to the brain.

methodsWe used functional magnetic resonance brain imaging (fMRI) to investigate neural effects of peripheral inflammation following typhoid vaccination in 16 healthy men, using a double-blind, randomized, crossover-controlled design.

resultsVaccination had no global effect on neurovascular coupling but markedly perturbed neural reactivity within substantia nigra during low-level visual stimulation. During a cognitive task, individuals in whom typhoid vaccination engendered higher levels of circulating interleukin-6 had significantly slower reaction time responses. Prolonged reaction times and larger interleukin-6 responses were associated with evoked neural activity within substantia nigra.

conclusionsOur findings provide mechanistic insights into the interaction between inflammation and neurocognitive performance, specifically implicating circulating cytokines and midbrain dopaminergic nuclei in mediating the psychomotor consequences of systemic infection.

Indexed as

AdolescentAdultBrain MappingCross-Over StudiesDouble-Blind MethodHumansImage Processing, Computer-AssistedInflammationInterleukin-6Magnetic Resonance ImagingMaleMotor Skills DisordersNeuropsychological TestsOxygenPhotic StimulationPsychomotor PerformanceInterleukin-6Oxygen

Identifiers

PMID18242584
PMCPMC2885493
OpenAlexW2059416963

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.