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The altered functional modular organization in systemic lupus erythematosus: an independent component analysis study

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Abstract

The aim of this study was to investigate the abnormities in functional connectivity (FC) within each modular network and between modular networks in patients with systemic lupus erythematosus (SLE). Twelve meaningful modular networks were identified via independent component analysis from 41 patients and 40 volunteers. Parametric tests were used to compare the intra- and intermodular FC between the groups. Partial correlation analysis was used to seek the relationships between abnormal FCs and the clinical data. Compared to the controls, SLE patients showed decreased intramodular FC in the anterior default mode network (aDMN), posterior default mode network (pDMN), ventral attention network (VAN), and sensorimotor network (SMN) and increased intramodular FC in the medial visual network (mVN) and left frontoparietal network. In addition, SLE patients showed decreased intermodular FC between the SMN and the lateral visual network (lVN), between the SMN and the VAN, and between the pDMN and the lVN and exhibited increased intermodular FC between the SMN and the salience network (SAN), between the pDMN and the SAN, and between the aDMN and the VAN. Moreover, we found several correlations among the abnormal FCs and the Mini-Mental State Examination in SLE patients. Mild cognitive impairment is compensated by the hyperconnectivity between the aDMN and the VAN, while severe cognitive impairment tends to be compensated by the hyperconnectivity between the SMN and the SAN. The FC value between the SMN and the SAN and between the aDMN and the VAN may serve as neuroimaging markers for monitoring cognitive progression in SLE patients.

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Abbreviations

aDMN:

Anterior default mode network

AN:

Auditory network

ECN:

Executive control network

DAN:

Dorsal attention network

FC:

Functional connectivity

FWE:

Family-wise error rate

ICA:

Independent component analysis

HC:

Healthy control

LFPN:

Left frontoparietal network

lVN:

Lateral visual network

MMSE:

Mini-mental state examination

mVN:

Medial visual network

pDMN:

Posterior default mode network

RFPN:

Right frontoparietal network

SAN:

Salience network

SLE:

Systemic lupus erythematosus

SMN:

Sensorimotor network

VAN:

Ventral attention network

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Funding

This study has received funding by National Natural Science Foundation of China (NSFC81571652); Science and technology project of Yangzhou (YZ2018059); "333 Project" of Jiangsu Province (BRA2017154). Yangzhou City Science and Education Strengthening Key Talents Project (ZDRC201873).

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Correspondence to Jing-Tao Wu.

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All the procedures involving human subjects were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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We confirm that informed consent was obtained from all the participants included in this study.

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Cao, ZY., Wang, N., Wei, H. et al. The altered functional modular organization in systemic lupus erythematosus: an independent component analysis study. Brain Imaging and Behavior 16, 728–737 (2022). https://doi.org/10.1007/s11682-021-00528-2

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  • DOI: https://doi.org/10.1007/s11682-021-00528-2

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