异氟醚
功能磁共振成像
麻醉
磁共振成像
医学
方差分析
静息状态功能磁共振成像
右美托咪定
事后
默认模式网络
神经科学
内科学
心理学
镇静
放射科
作者
Yang Liu,Huiqun Fu,Yan Wu,Zunshu Du,Bo-Ran Li,Xin Gao,Guanwen Lin,Shuyi Yang,Tianlong Wang
标识
DOI:10.1097/cm9.0000000000001126
摘要
Abstract Background Resting-state functional magnetic resonance imaging (rs-fMRI) is a promising method for the study of brain function. Typically, rs-fMRI is performed on anesthetized animals. Although different functional connectivity (FC) in various anesthetics on whole brain have been studied, few studies have focused on different FC in the aged brain. Here, we measured FC under three commonly used anesthesia methods and analyzed data to determine if the FC in whole brain analysis were similar among groups. Methods Twenty-four male aged Wistar rats were randomly divided into three groups ( n = 8 in each group). Anesthesia was performed under either isoflurane (ISO), combined ISO + dexmedetomidine (DEX) or α-chloralose (AC) according to the groups. Data of rs-fMRI was analyzed by FC in a voxel-wise way. Differences in the FC maps between the groups were analyzed by one-way analysis of variance and post hoc two-sample t tests. Results Compared with ISO + DEX anesthesia, ISO anesthesia caused increased FC in posterior brain and decreased FC in the middle brain of the aged rat. AC anesthesia caused global suppression as no increase in FC was observed. Conclusion ISO could be used as a substitute for ISO + DEX in rat default mode network studies if the left temporal association cortex is not considered important.
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