Structural connectivity of the precuneus and its relation to resting-state networks

Yamaguchi, Atsushi; Jitsuishi, Tatsuya

doi:10.1016/j.neures.2023.12.004

Cited by 1 publication

(1 citation statement)

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“…The results of this study suggested that acupuncture may potentially reshape the structure and function of multiple brain regions in IS patients through the involvement of the PCUN. Simultaneously, as an important node in the Default Mode Network (DMN), the PCUN is closely associated with advanced cognitive activities like episodic memory, self-related processing, and consciousness ( Raichle, 2015 ; Yamaguchi and Jitsuishi, 2023 ). It has been proven that the destruction of DMN is related to cognitive impairments after IS ( Zhao et al, 2018 ; Wu et al, 2021 ), and acupuncture might facilitate improvements in cognitive function in post-IS individuals.…”

Section: Discussionmentioning

confidence: 99%

Immediate and long-term brain activation of acupuncture on ischemic stroke patients: an ALE meta-analysis of fMRI studies

Zhang,

Lu,

Ren

et al. 2024

Front. Neurosci.

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BackgroundAcupuncture, as an alternative and complementary therapy recommended by the World Health Organization for stroke treatment, holds potential in ameliorating neurofunctional deficits induced by ischemic stroke (IS). Understanding the immediate and long-term effects of acupuncture and their interrelation would contribute to a better comprehension of the mechanisms underlying acupuncture efficacy.MethodsActivation likelihood estimation (ALE) meta-analysis was used to analyze the brain activation patterns reported in 21 relevant functional neuroimaging studies. Among these studies, 12 focused on the immediate brain activation and 9 on the long-term activation. Single dataset analysis were employed to identify both immediate and long-term brain activation of acupuncture treatment in IS patients, while contrast and conjunction analysis were utilized to explore distinctions and connections between the two.ResultsAccording to the ALE analysis, immediately after acupuncture treatment, IS patients exhibited an enhanced cluster centered around the right precuneus (PCUN) and a reduced cluster centered on the left middle frontal gyrus (MFG). After long-term acupuncture treatment, IS patients showed an enhanced cluster in the left PCUN, along with two reduced clusters in the right insula (INS) and hippocampus (HIP), respectively. Additionally, in comparison to long-term acupuncture treatment, the right angular gyrus (ANG) demonstrated higher ALE scores immediately after acupuncture, whereas long-term acupuncture resulted in higher scores in the left superior parietal gyrus (SPG). The intersecting cluster activated by both of them was located in the left cuneus (CUN).ConclusionThe findings provide initial insights into both the immediate and long-term brain activation patterns of acupuncture treatment for IS, as well as the intricate interplay between them. Both immediate and long-term acupuncture treatments showed distinct patterns of brain activation, with the left CUN emerging as a crucial regulatory region in their association.Systematic Review Registrationhttps://www.crd.york.ac.uk/prospero/, CRD42023480834.

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