Evidence map›Paper›PMID 32965801›Full record

ArticleCNS neuroscience & therapeutics2021

Altered amplitude of low-frequency fluctuations and regional homogeneity in drug-resistant epilepsy patients with vagal nerve stimulators under different current intensity.

Jin Zhu, Cuiping Xu, Xi Zhang, Liang Qiao, Xueyuan Wang, Xiaohua Zhang, Xiaoming Yan, Duanyu Ni, Tao Yu, Guojun Zhang and 1 more

Open access · goldAbstract read
In one paragraph

Article in CNS neuroscience & therapeutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 17% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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  6. Aberrant functional connectivity associated with drug response in patients with newly diagnosed epilepsy.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
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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

11 authors at 1 institution in 1 country.

Jin ZhuBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Cuiping XuBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Xi ZhangBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Liang QiaoBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Xueyuan WangBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Xiaohua ZhangBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Xiaoming YanBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Duanyu NiBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Tao YuBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Guojun ZhangBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.
Yongjie LiBeijing Institute of Functional Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China.ORCID 0000-0003-0627-630X
Capital Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe mechanisms of vagal nerve stimulation (VNS) for the treatment of drug-resistant epilepsy (DRE) remain unclear. This study aimed to measure spontaneous brain activity changes caused by VNS in DRE patients using resting-state functional MRI (rs-fMRI).

methodsThe rs-fMRI scans were performed in 16 DRE patients who underwent VNS surgery. Amplitude of low-frequency fluctuations (ALFF) and regional homogeneity (ReHo) was generated and examined using paired sample t-test to compare activity changes at different current intensity stage. The preoperative and postoperative ALFF/ReHo were also compared in eight responders (≥50% reduction of seizure frequency three months after surgery) and eight nonresponders using paired sample t-test.

resultsThe significant ALFF and ReHo changes were shown in various cortical/subcortical structures in patients under different current intensity. After three months of stimulation, responders exhibited increased ALFF in the right middle cingulate gyrus, left parahippocampal gyrus, and left cerebellum, and increased ReHo in the right postcentral gyrus, left precuneus, left postcentral gyrus, right superior parietal gyrus, right precentral gyrus, and right superior frontal gyrus. Nonresponders exhibited decreased ALFF in the left temporal lobe and right cerebellum, increased ALFF in bilateral brainstem, decreased ReHo in bilateral lingual gyri, and increased ReHo in the right middle frontal gyrus and right anterior cingulate gyrus.

conclusionsThe spontaneous neural activity changes in DRE patients caused by VNS were in an ongoing process. Increased ALFF/ReHo in frontal cortex, cingulate gyri, precentral/postcentral gyri, parahippocampal gyri, precuneus, parietal cortex, and cerebellum may implicate in VNS-induced improvement in seizure frequency.

Indexed as

AdolescentAdultBrainBrain MappingChildChild, PreschoolDrug Resistant EpilepsyFemaleHumansMagnetic Resonance ImagingMaleVagus Nerve StimulationYoung Adultdrug-resistant epilepsyresting-state functional mrishort-term studyvagal nerve stimulation

Identifiers

PMID32965801
PMCPMC7871792
OpenAlexW3088780117

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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.