Different Mechanisms of Two Subtypes of Perforating Artery Infarct in the Middle Cerebral Artery Territory: A High-Resolution Magnetic Resonance Imaging Study

Overview

Journal Front Neurol

Specialty Neurology

Date 2018 Oct 9

PMID 30294295

Citations 11

Authors

Siyuan Liao

Zhezhi Deng

Yuge Wang

Ting Jiang

Zhuang Kang

Sha Tan

Yilong Shan

Yan Zou

Zhengqi Lu

Affiliations

Soon will be listed here.

Abstract

Perforating Artery Infarcts (PAIs) can be divided into two subtypes based on their etiologies: branch Atheromatous Disease (BAD) and Lacunar Infarct (LI). Recent studies have shown that while both subtypes can be caused by large artery lesions, the different mechanisms that underlie their development are not clear. This study was designed to use High-Resolution Magnetic Resonance Imaging (HRMRI) to explore the differences that contribute to the occurrence of these two subtypes in large artery lesions in the anterior circulation. Fifty patients with an acute PAI in the anterior circulation were enrolled (32 BAD and 18 LI patients). The ipsilateral middle cerebral artery (MCA) was scanned with HRMRI to analyze the atherosclerosis plaques. Artery remodeling and plaque characteristics of MCA lesions were compared between the two subtypes. The rate of MCA lesions was significantly higher in BAD and substantially lower in LI ( = 0.033). LAs for the lumen areas in Bad, they were smaller than LI ( < 0.001), Additionally, the plaque area ( = 0.001) and plaque burden ( < 0.001) were superior in the BAD group. Most BAD patients displayed non-positive remodeling, while the great majority of LI patients showed positive remodeling ( < 0.001). In the anterior circulation, a considerable amount of BAD and LI share similarities with atherosclerotic plaques in large arteries. BAD patients mainly showed relatively large and stable atherosclerotic plaques in large arteries, while LI patients mainly exhibited relatively small and unstable atherosclerotic plaques. This clinical trial is a retrospective study and therefore does not require registration.

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