Disrupted resting-state spontaneous neural activity in stable COPD.

Abstract:

Introduction and aim:Abnormal brain structure and function in COPD has been reported on MRI. However, the deficit in local synchronization of spontaneous activity in patients with stable COPD remains unknown. The main aim of the present study was to explore spontaneous brain activity in patients with COPD compared with normal controls using the regional homogeneity (ReHo) method based on resting-state functional MRI. Methods:Nineteen patients with stable COPD and 20 well-matched (including age, sex, and number of years of education) normal controls who were recruited for the present study underwent resting-state functional MRI examinations and a series of neuropsychological and clinical assessments. The ReHo method was used to assess the strength of local brain signal synchrony. The mean ReHo values in brain areas with abnormal ReHo were evaluated with a receiver operating characteristic curve. The relationships between the brain regions with altered ReHo values and the clinical and neuropsychological parameters in COPD patients were assessed using Pearson's correlation. Results:Patients with COPD showed significantly lower ReHo values in the left occipital lobe and the right lingual, bilateral precuneus, and right precentral gyrus. The result of receiver operating characteristic curve analysis showed that the altered average ReHo values have high efficacy for distinguishing function. The mean lower ReHo values in the precuneus gyrus showed a significant positive correlation with FEV1%, FEV1/FVC, and orientation function but a significant negative correlation with arterial partial pressure of carbon dioxide. Conclusion:The COPD patients demonstrated abnormal synchrony of regional spontaneous activity, and the regions with abnormal activity were all correlated with visual processing pathways, which might provide us with a new perspective to further understand the underlying pathophysiology of cognitive impairment in patients with COPD.

authors

Xin H,Li H,Yu H,Yu J,Zhang J,Wang W,Peng D

doi

10.2147/COPD.S190671

subject

Has Abstract

pub_date

2019-02-27 00:00:00

pages

499-508

eissn

1176-9106

issn

1178-2005

pii

copd-14-499

journal_volume

14

pub_type

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