Analysis of Clinical Efficacy and Central Response Mechanism of Transcutaneous Auricular Vagus Nerve Stimulation for the Treatment of Overweight/Obesity Patients Based on Regional Homogeneity
10.13359/j.cnki.gzxbtcm.2024.11.020
- VernacularTitle:基于局部一致性分析经皮耳穴迷走神经刺激治疗超重/肥胖患者的临床疗效及中枢效应机制
- Author:
Wen-Fei FAN
1
;
Cheng-Feng ZHANG
;
Shun-Ying ZHAO
;
Li-Hong YIN
;
Si-Ning YAN
;
Meng-Ying LIAO
;
Jun CHEN
;
Yu CHEN
;
Chang-Cai XIE
Author Information
1. 广州中医药大学第二临床医学院,广东 广州 510006
- Keywords:
overweight/obesity;
transcutaneous auricular vagus nerve stimulation(taVNS);
regional homogeneity(ReHo)analysis;
resting-state cerebral functional magnetic resonance imaging(fMRI);
central response mechanism
- From:
Journal of Guangzhou University of Traditional Chinese Medicine
2024;41(11):2954-2960
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the therapeutic effect of transcutaneous auricular vagus nerve stimulation(taVNS)on overweight/obesity patients,and to explore its central mechanism.Methods Twenty-six overweight/obesity patients were randomly divided into two groups,12 cases in the taVNS test group(shortened as the taVNS group)and 14 cases in the lifestyle intervention control group(shortened as the control group).The patients in the control group were treated with online lifestyle intervention of calorie-restricted diet(CRD),and the patients in the taVNS group were treated with taVNS on the basis of the intervention for the control group.The taVNS was performed on unilateral acupoints of spleen and endocrine,twice(in the morning and at evening)per day,for five days a week.The treatment for the two groups covered four weeks.The obesity indicators such as body weight,body mass index(BMI)and waist circumference of the patients in the two groups were observed before and after treatment.Moreover,the resting-state cerebral functional magnetic resonance imaging(fMRI)data of the patients were collected after treatment,and then the regulatory effect of taVNS on the regional homogeneity(ReHo)of local cerebral area of the patients was observed.Results(1)During the trial,one case in each group dropped off,and a total of 24 patients(including 13 cases in the control group and 11 cases in the taVNS group)were finally included in the statistical analysis of the observation indicators.(2)After treatment,the body weight,BMI and waist circumference of patients in the taVNS group were decreased compared with those before treatment(P＜0.05),while the obesity indicators in the control group only showed a downward trend compared with those before treatment,the differences being not statistically significant(P＞0.05).The improvement of the obesity indicators of body weight,BMI,and waist circumference in the taVNS group was significantly superior to that in the control group,and there were statistically significant differences in the post-treatment indicators and in the pre-and post-treatment difference values of the indicators between the two groups(P＜0.05 or P＜0.01).(3)After treatment,the taVNS group had greater ReHo values in the left prefrontal lobe and medial frontal gyrus than the control group,and the control group had greater ReHo value in the right parietal lobe than the taVNS group,which indicated that compared with the control group,the ReHo of the left prefrontal lobe and medial frontal gyrus in the taVNS group was increased and the ReHo of the right parietal lobe was decreased(Pvoxel＜0.001,Pcluster＜0.05,corrected by FWE level).Conclusion As a non-invasive treatment method,taVNS exerts certain efficacy for the treatment of overweight/obesity patients.The central response mechanism for treatment of obesity is probably related with the modulation of taVNS on the functional areas of left prefrontal lobe,medial frontal gyrus,and right parietal lobe of the patients.
