Evidence map›Paper›PMID 34992481›Full record

ArticleNature and science of sleep2021

Frequency‑Specific Regional Homogeneity Alterations and Cognitive Function in Obstructive Sleep Apnea Before and After Short-Term Continuous Positive Airway Pressure Treatment.

Haijun Li, Lan Li, Linghong Kong, Panmei Li, Yaping Zeng, Kunyao Li, Wei Xie, Yongqiang Shu, Xiang Liu, Dechang Peng

Open access · goldAbstract read
In one paragraph

Article in Nature and science of sleep, 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
2.4field-weighted citation impact, top 10% 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.

  1. Distinct functional brain abnormalities in insomnia disorder and obstructive sleep apnea.European archives of psychiatry and clinical neuroscience · 2023
    Pooled it
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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 2 institutions in 1 country.

Haijun LiMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.ORCID 0000-0001-6631-123X
Lan LiJiangxi Provincial Institute of Parasitic Diseases Control, Nanchang City, Jiangxi Province, People's Republic of China.
Linghong KongMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Panmei LiMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Yaping ZengMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Kunyao LiMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Wei XieMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Yongqiang ShuMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Xiang LiuMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Dechang PengMedical Imaging Center, The First Affiliated Hospital of Nanchang University, Nanchang City, Jiangxi Province, People's Republic of China.
Nanchang University · CNJiangsu Institute of Parasitic Diseases · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePrevious studies have demonstrated abnormal local spontaneous brain activity in the conventional frequency bands (0.01-0.08 Hz) in obstructive sleep apnea (OSA). However, it is not clear whether these abnormalities are associated with the specific frequency band of low-frequency oscillations or whether it can be improved with a continuous positive airway pressure (CPAP) treatment. This study aimed to investigate the regional homogeneity (ReHo) in specific frequency at baseline (pre-CPAP) and after one month of CPAP adherence treatment (post-CPAP) in OSA patients.

methodsTwenty-one patients with moderate-to-severe OSA and 21 age- and sex-matched healthy controls (HCs) were included in the final analysis. ReHo was calculated in three different frequency bands (typical frequency band: 0.01-0.1 Hz; slow-5 band: 0.01-0.027 Hz; slow-4 band: 0.027-0.073 Hz), respectively. A partial correlational analysis was performed to assess the relationship between altered ReHo and clinical evaluation.

resultsOSA patients revealed increased ReHo in the brainstem, bilateral inferior temporal gyrus (ITG)/fusiform, and right-cerebellum posterior lobe (CPL), and decreased ReHo in the bilateral inferior parietal lobule (IPL), right superior temporal gyrus (STG), and left precentral gyrus (PG) compared to HC groups in different frequency bands. Significantly changed ReHo in the bilateral middle temporal gyrus (MTG), PG, medial frontal gyrus (MFG), supplementary motor area (SMA), CPL, IPL, left superior frontal gyrus (SFG), ITG, MTG, and right STG were observed between post-CPAP and pre-CPAP OSA patients, which was associated with specific frequency bands. The altered ReHo in specific frequency bands was correlated with Montreal cognitive assessment score, Epworth sleepiness scale, and apnea hypopnea index in pre-CPAP OSA patients.

conclusionThese findings indicate that OSA has frequency-related abnormalities of spontaneous neural activity before and after short-term CPAP treatment, which might contribute to a better understanding of local neural psychopathology and may serve as potential biomarkers for clinical CPAP treatment.

Indexed as

frequency bandlocal connectivityobstructive sleep apnearesting-state functional magnetic resonance imagingtreatment

Identifiers

PMID34992481
PMCPMC8714019
OpenAlexW4200314682

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.