Evidence map›Paper›PMID 36277918›Full record

ArticleFrontiers in neurology2022

Altered functional connectivity of the thalamus in primary angle-closure glaucoma patients: A resting-state fMRI study.

Yuanyuan Wang, Linglong Chen, Fengqin Cai, Junwei Gao, Feng Ouyang, Ye Chen, Mingxue Yin, Chengpeng Hua, Xianjun Zeng

Abstract read
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Article in Frontiers in neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

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14citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

  1. Excitatory and inhibitory networks diverge following early blindness.Cerebral cortex (New York, N.Y. : 1991) · 2026
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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Yuanyuan WangDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Linglong ChenDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Fengqin CaiDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Junwei GaoDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Feng OuyangDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Ye ChenDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Mingxue YinDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.
Chengpeng HuaDepartment of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
Xianjun ZengDepartment of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and objectives: Glaucoma is one of the leading irreversible causes of blindness worldwide, and previous studies have shown that there is abnormal functional connectivity (FC) in the visual cortex of glaucoma patients. The thalamus is a relay nucleus for visual signals; however, it is not yet clear how the FC of the thalamus is altered in glaucoma. This study investigated the alterations in thalamic FC in patients with primary angle-closure glaucoma (PACG) by using resting-state functional MRI (rs-fMRI). We hypothesized that PACG patients have abnormal FC between the thalamus and visual as well as extravisual brain regions. Methods: Clinically confirmed PACG patients and age- and gender-matched healthy controls (HCs) were evaluated by T1 anatomical and functional MRI on a 3 T scanner. Thirty-four PACG patients and 33 HCs were included in the rs-fMRI analysis. All PACG patients underwent complete ophthalmological examinations; included retinal nerve fiber layer thickness (RNFLT), intraocular pressure (IOP), average cup-to-disc ratio (A-C/D), and vertical cup-to-disc ratio (V-C/D). After the MRI data were preprocessed, the bilateral thalamus was chosen as the seed point; and the differences in resting-state FC between groups were evaluated. The brain regions that significantly differed between PACG patients and HCs were identified, and the correlations were then evaluated between the FC coefficients of these regions and clinical variables. Results: Compared with the HCs, the PACG patients showed decreased FC between the bilateral thalamus and right transverse temporal gyrus, between the bilateral thalamus and left anterior cingulate cortex, and between the left thalamus and left insula. Concurrently, increased FC was found between the bilateral thalamus and left superior frontal gyrus in PACG patients. The FC between the bilateral thalamus and left superior frontal gyrus was positively correlated with RNFLT and negatively correlated with the A-C/D and V-C/D. The FC between the left thalamus and left insula was negatively correlated with IOP. Conclusion: Extensive abnormal resting-state functional connections between the thalamus and visual and extravisual brain areas were found in PACG patients, and there were certain correlations with clinical variables, suggesting that abnormal thalamic FC plays an important role in the progression of PACG.

Indexed as

functional connectivityprimary angle-closure glaucomaresting-state functional MRIthalamusvisual impairment

Identifiers

PMID36277918
PMCPMC9583913

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