Evidence map›Paper›PMID 34895135›Full record

ArticleThe journal of headache and pain2021

Altered brain functional network dynamics in classic trigeminal neuralgia: a resting-state functional magnetic resonance imaging study.

Pengfei Zhang, Yanli Jiang, Guangyao Liu, Jiao Han, Jun Wang, Laiyang Ma, Wanjun Hu, Jing Zhang

Abstract read
In one paragraph

Article in The journal of headache and pain, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

33 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  13. Abnormalities of cortical morphology and structural covariance network in the patients with primary trigeminal neuralgia: a preliminary clinical study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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  20. Trigeminal neuralgia.Nature reviews. Disease primers · 2024
    Review
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

8 authors.

Pengfei Zhang *Second Clinical School, Lanzhou University, Lanzhou, 730000, China.
Yanli Jiang *Second Clinical School, Lanzhou University, Lanzhou, 730000, China.
Guangyao LiuSecond Clinical School, Lanzhou University, Lanzhou, 730000, China.
Jiao HanSecond Clinical School, Lanzhou University, Lanzhou, 730000, China.
Jun WangSecond Clinical School, Lanzhou University, Lanzhou, 730000, China.
Laiyang MaSecond Clinical School, Lanzhou University, Lanzhou, 730000, China.
Wanjun HuDepartment of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou, 730000, China.
Jing ZhangDepartment of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou, 730000, China. lztong2001@163.com.

Funding

Cuiying Scientific Training Program for Undergraduates of Lanzhou University Second Hospital Grant Nos. CYXZ-07National Natural Science Foundation of China Grant Nos. 81960309
6 · The paper itself

Abstract

backgroundAccumulating studies have indicated a wide range of brain alterations with respect to the structure and function of classic trigeminal neuralgia (CTN). Given the dynamic nature of pain experience, the exploration of temporal fluctuations in interregional activity covariance may enhance the understanding of pain processes in the brain. The present study aimed to characterize the temporal features of functional connectivity (FC) states as well as topological alteration in CTN.

methodsResting-state functional magnetic resonance imaging and three-dimensional T1-weighted images were obtained from 41 CTN patients and 43 matched healthy controls (HCs). After group independent component analysis, sliding window based dynamic functional network connectivity (dFNC) analysis was applied to investigate specific FC states and related temporal properties. Then, the dynamics of the whole brain topological organization were estimated by calculating the coefficient of variation of graph-theoretical properties. Further correlation analyses were performed between all these measurements and clinical data.

resultsTwo distinct states were identified. Of these, the state 2, characterized by complicated coupling between default mode network (DMN) and cognitive control network (CC) and tight connections within DMN, was expressed more in CTN patients and presented as increased fractional windows and dwell time. Moreover, patients switched less frequently between states than HCs. Regarding the dynamic topological analysis, disruptions in global graph-theoretical properties (including network efficiency and small-worldness) were observed in patients, coupled with decreased variability in nodal efficiency of anterior cingulate cortex (ACC) in the salience network (SN) and the thalamus and caudate nucleus in the subcortical network (SC). The variation of topological properties showed negative correlation with disease duration and attack frequency.

conclusionsThe present study indicated disrupted flexibility of brain topological organization under persistent noxious stimulation and further highlighted the important role of "dynamic pain connectome" regions (including DMN/CC/SN) in the pathophysiology of CTN from the temporal fluctuation aspect. Additionally, the findings provided supplementary evidence for current knowledge about the aberrant cortical-subcortical interaction in pain development.

Indexed as

ConnectomeTrigeminal NeuralgiaBrainGyrus CinguliHumansMagnetic Resonance ImagingChronic painDynamic functional connectivityDynamic pain connectomeResting-state functional MRITrigeminal neuralgia

Identifiers

PMID34895135
PMCPMC8903588

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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.