Evidence map›Paper›PMID 33299346›Full record

ArticleJournal of pain research2020

Altered Resting-State Connectivity with Pain-Related Expectation Regions in Female Patients with Severe Knee Osteoarthritis.

Kai Ushio, Kazuyoshi Nakanishi, Yukio Mikami, Atsuo Yoshino, Masahiro Takamura, Kazuhiko Hirata, Yuji Akiyama, Hiroaki Kimura, Yasumasa Okamoto, Nobuo Adachi

Open access · greenAbstract read
In one paragraph

Article in Journal of pain research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. The Functional Anatomy of Nociception: Effective Connectivity in Chronic Pain and Placebo Response.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
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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

10 authors at 3 institutions in 1 country.

Kai UshioDepartment of Rehabilitation, Hiroshima University Hospital, Hiroshima, Japan.ORCID 0000-0001-5195-1808
Kazuyoshi NakanishiDepartment of Orthopedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.ORCID 0000-0001-7497-8667
Yukio MikamiDepartment of Rehabilitation, Hiroshima University Hospital, Hiroshima, Japan.
Atsuo YoshinoDepartment of Psychiatry and Neurosciences, Hiroshima University, Hiroshima, Japan.
Masahiro TakamuraBrain, Mind and KANSEI Sciences Research Center, Hiroshima University, Hiroshima, Japan.ORCID 0000-0001-9742-152X
Kazuhiko HirataSports Medical Center, Hiroshima University Hospital, Hiroshima, Japan.
Yuji AkiyamaDepartment of Clinical Radiology, Hiroshima University Hospital, Hiroshima, Japan.
Hiroaki KimuraDepartment of Rehabilitation, Hiroshima University Hospital, Hiroshima, Japan.ORCID 0000-0003-0005-5805
Yasumasa OkamotoDepartment of Psychiatry and Neurosciences, Hiroshima University, Hiroshima, Japan.
Nobuo AdachiSports Medical Center, Hiroshima University Hospital, Hiroshima, Japan.
Hiroshima University Hospital · JPHiroshima University · JPWakayama Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeExpectation affects pain experience in humans. Numerous studies have reported that pre-stimulus activity in the anterior insular cortex (aIC), together with prefrontal and limbic regions, integrated pain intensity and expectations. However, it is unclear whether the resting-state functional connectivity (rs-FC) between the aIC and other brain regions affects chronic pain. The purpose of this study was to examine the rs-FC between the aIC and the whole brain regions in female patients with severe knee osteoarthritis (OA). PATIENTS AND

methodsNineteen female patients with chronic severe knee OA and 15 matched controls underwent resting-state functional magnetic resonance imaging. We compared the rs-FC from the aIC seed region between the two groups. A disease-specific measurement of knee OA was performed.

resultsThe aIC showed stronger rs-FC with the right orbitofrontal cortex (OFC), subcallosal area, and bilateral frontal pole compared with controls. The strength of rs-FC between the left aIC and the right OFC was positively correlated with the knee OA pain score (

conclusionThis was the first study to show the stronger rs-FCs between the aIC and other pain-related expectation regions in female patients with severe knee OA. Female sex and preoperative pain intensity are risk factors of persistent postoperative pain after total knee arthroplasty. It is suggested that the functional relationship between pain-related expectation regions affects the formation of severe knee OA and persistent postoperative pain following total knee arthroplasty.

Indexed as

chronic painfunctional magnetic resonance imaginginsular cortexorbitofrontal cortex

Identifiers

PMID33299346
PMCPMC7719440
OpenAlexW3108657118

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.