Evidence map›Paper›PMID 29392216›Full record

ArticlePain reports2017

The impact of pain-related fear on neural pathways of pain modulation in chronic low back pain.

Michael Lukas Meier, Philipp Stämpfli, Barry Kim Humphreys, Andrea Vrana, Erich Seifritz, Petra Schweinhardt

Open access · goldAbstract read
In one paragraph

Article in Pain reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

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  20. ExposureFrontiers in neuroscience · 2019
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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

6 authors at 2 institutions in 2 countries.

Michael Lukas MeierDepartment of Chiropractic Medicine, Interdisciplinary Spinal Research, University Hospital Balgrist, Zurich, Switzerland.
Philipp StämpfliDepartment of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland.
Barry Kim HumphreysDepartment of Chiropractic Medicine, Interdisciplinary Spinal Research, University Hospital Balgrist, Zurich, Switzerland.
Andrea VranaDepartment of Chiropractic Medicine, Interdisciplinary Spinal Research, University Hospital Balgrist, Zurich, Switzerland.
Erich SeifritzDepartment of Psychiatry, Psychotherapy and Psychosomatics, Hospital of Psychiatry, University of Zurich, Zurich, Switzerland.
Petra SchweinhardtDepartment of Chiropractic Medicine, Interdisciplinary Spinal Research, University Hospital Balgrist, Zurich, Switzerland.
Universitätsklinik Balgrist · CHUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPain-related fear plays a substantial role in chronic low back pain (LBP) by amplifying the experienced disability. Related dysfunctional emotions and cognitions may also affect sensory aspects of pain through a modulatory pathway in which the periaqueductal gray (PAG) and the amygdala play key roles.

objectivesWe therefore hypothesized a differential amygdala-PAG functional connectivity (FC) in patients with chronic LBP that is modulated by the degree of pain-related fear.

methodsWe used data of a previously reported fMRI study where 20 chronic LBP patients (7 females, mean age = 39.35) and 20 healthy controls (12 females, mean age = 32.10) were asked to observe video clips showing potentially harmful and neutral activities for the back. Pain-related fear was assessed using the Tampa Scale of kinesiophobia (TSK) and Fear Avoidance Beliefs questionnaires (FABQ). Generalized psychophysiological interactions were used to reveal task-based FC.

resultsCompared to controls, patients exhibited a significant decrease in amygdala-PAG-FC ( DISCUSSION: Our findings might indicate a maladaptive psychobiological interaction in chronic LBP patients characterized by a disrupted amygdala-PAG-FC that is modulated by the degree of pain-related fear. These results shed new light on brain mechanisms underlying psychological factors that may have pronociceptive effects in chronic LBP.

Indexed as

AmygdalaChronic low back painFear avoidance beliefsfMRIFunctional connectivityKinesiophobiaPAGPPI

Identifiers

PMID29392216
PMCPMC5741307
OpenAlexW2606780481

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.