Abbreviation (ISO4): Chinese Journal of Alzheimer's Disease and Related Disorders
Editor in chief: Jun WANG
Chinese Journal of Alzheimer's Disease and Related Disorders >
Preliminary exploration of the impact of immediate transcutaneous auricular vagus nerve stimulation on brain function imaging in patients with mild cognitive impairment
Received date: 2024-02-26
Revised date: 2024-04-01
Online published: 2024-04-26
Objective: This study investigated the impact of immediate (30 minutes) transcutaneous auricular vagus nerve stimulation (taVNS) on brain function in patients with mild cognitive impairment (MCI) using resting-state functional magnetic resonance imaging (rs-fMRI). Methods: The study included 22 MCI patients randomly divided into a taVNS group and a sham taVNS group, with 11 patients in each, as well as 11 healthy controls (HCs). All three groups of subjects underwent 30 minutes of auricular electrical stimulation, with the taVNS group and HCs group receiving stimulation on the concha, located in the main distribution area of the vagus nerve, while the sham taVNS group received stimulation on the non-vagus nerve distributed helicis. Each subject underwent an rs-fMRI scan before and after the stimulation. For preprocessing of the rs-fMRI scan results, DPABI 8.0 was used, followed by calculation of functional connectivity (FC). Comparison of FC images before and after stimulation in three groups of subjects, with the results being extracted and post-hoc analysis performed using Graphpad Prism 9.0.0 to observe the effects of taVNS on brain function. Results: Compared to pre-stimulation, post-stimulation FC values in the taVNS group showed a significant decrease between the right hippocampus and the right cerebellum_6, and a significant increase between the left caudate nucleus and the right superior frontal gyrus (P<0.005), as well as between the right pallidum and the left caudate (P<0.05). In the HCs group, there was a significant decrease in the FC values between the left caudate and the cerebellum_8 after stimulation (P<0.05). Conclusion: Immediate taVNS can modulate brain functional networks related to memory and cognition, as well as the basal ganglia and cerebellum, which may be the effector targets of taVNS treatment for MCI.
Chunlei GUO , Yue MA , Shanshan GAO , Yi LUO , Qingyan CHEN , Jiliang FANG . Preliminary exploration of the impact of immediate transcutaneous auricular vagus nerve stimulation on brain function imaging in patients with mild cognitive impairment[J]. Chinese Journal of Alzheimer's Disease and Related Disorders, 2024 , 7(2) : 94 -102 . DOI: 10.3969/j.issn.2096-5516.2024.02.003
表1 三组一般资料比较Tab 1 Comparison of general information among three groups |
性别(例,女/男) | 年龄(岁,$\bar{x}\pm s$) | 受教育程度(年,$\bar{x}\pm s$) | |
---|---|---|---|
HCs组(n=11) | 3/8 | 66.73±5.62 | 11.55±2.42 |
taVNS组(n=11) | 3/8 | 66.27±6.02 | 9.55±2.25 |
sham taVNS组(n=11) | 5/6 | 67.27±6.62 | 10.36±1.57 |
χ2/F值 | 1.091 | 0.074 | 2.490 |
P值 | 0.580 | 0.929 | 0.100 |
注:性别为卡方检验,其余为单因素方差分析。 | |
Note: Gender was analyzed by chi-square test, while the rest were analyzed by one-way ANOVA. |
表2 三组认知量表评分比较($\bar{x}\pm s$)Tab 2 Comparison of cognitive scale scores among three groups($\bar{x}\pm s$) |
分组 | MoCA-B | AVLT-H(N5) | AVLT-H(N7) | STT-A |
---|---|---|---|---|
HCs | 24.36±0.92 | 6.91±1.14 | 23.00±1.18 | 71.55±20.33 |
taVNS | 17.91±3.33 | 2.55±2.38 | 18.91±4.48 | 132.18±54.44 |
sham taVNS | 19.00±5.33 | 3.00±1.67 | 16.55±8.50 | 121.00±63.72 |
F值 | 9.763 | 19.451 | 3.753 | 4.62 |
P值 | 0.001 | <0.001 | 0.035 | 0.018 |
STT-B | AFT | BNT | ||
HCs | 166.09±45.93 | 20.73±3.17 | 25.27±2.20 | |
taVNS | 321.55±112.00 | 14.36±4.03 | 21.36±4.52 | |
sham taVNS | 315.09±237.90 | 14.64±5.63 | 23.45±4.72 | |
F值 | 3.583 | 7.374 | 2.656 | |
P值 | 0.04 | 0.002 | 0.087 |
注:以上均为单因素方差分析。 | |
Note: All of the above were analyzed using one-way ANOVA. |
表3 三组FAQ、HAMD-17、HAMA得分Tab 3 Scores of FAQ, HAMD-17, and HAMA among three groups |
分组 | HCs组(n=11) | taVNS组(n=11) | sham taVNS组(n=11) |
---|---|---|---|
FAQ | 0~0 | 0~2 | 0~2 |
HAMD-17 | 0~0 | 0~5 | 0~6 |
HAMA | 0~0 | 2~3 | 2~5 |
注:FAQ、HAMD-17、HAMA得分均在正常范围内,以得分范围表示。 | |
Note: The scores of FAQ, HAMD-17, and HAMA were all within the normal range, expressed as the score range. |
表4 三组FC刺激前后比较结果Tab 4 Comparative results before and after FC stimulation in the three groups |
项目 | 小脑_9 | 小脑_Crus1 | 额上回 | 小脑_8 | 尾状核 | 小脑_6 |
---|---|---|---|---|---|---|
右/左 | 右 | 左 | 右 | 右 | 左 | 右 |
BA分区 | - | 37 | 10 | - | 25 | 37 |
簇体素数 | 38 | 81 | 59 | 63 | 42 | 25 |
峰值MNI坐标 | ||||||
X | 9 | -27 | 15 | 9 | -9 | 39 |
Y | -63 | -48 | 54 | -60 | 12 | -57 |
Z | -45 | -39 | 3 | -33 | 3 | -27 |
F值 | 8.6653 | 8.9866 | 8.775 | 9.4871 | 9.2465 | 9.2982 |
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