Page 85 - 南京医科大学自然版
P. 85
第44卷第9期 南京医科大学学报(自然科学版)
2024年9月 Journal of Nanjing Medical University(Natural Sciences) ·1257 ·
·影像医学研究·
基于ReHo的7~15岁不同程度肥胖儿童静息态fMRI研究
李 倩,王 心,杨 明 *
南京医科大学附属儿童医院放射科,江苏 南京 210008
[摘 要] 目的:利用静息态功能磁共振(resting state functional MRI,rs⁃fMRI)探讨7~15岁不同程度肥胖儿童大脑局部一致性
(regional homogeneity,ReHo)的特征。方法:选取单纯性肥胖(obesity,OB)儿童 35 例、肥胖伴代谢综合征(metobolicsyndrom,
MS)儿童20例及健康对照(healthy control,HC)儿童24例,均进行rs⁃fMRI扫描,计算ReHo值并对比3组之间的差异,而后将差
异脑区与临床资料进行相关性分析。结果:与 HC 组相比,OB 组及 MS 组右侧梭状回、左侧颞下回的 ReHo 值升高,右内侧额
上回、左背外侧额上回的ReHo值降低;与OB组相比,MS组左背外侧额上回ReHo值降低,且左背外侧额上回的ReHo值与丙氨
酸氨基转移酶(alanine aminotransferase,ALT)、天冬氨酸氨基转氨酶(aspartate aminotransferase,AST)呈显著负相关(r=-0.350,
P=0.009;r=-0.294,P=0.029)。结论:肥胖儿童在参与摄食调节、抑制控制等脑区功能活动异常,左背外侧额上回的活动异常与
肥胖程度相关,可为早期干预和治疗提供影像学依据。
[关键词] 肥胖儿童;代谢综合征;脑功能;局部一致性
[中图分类号] R445.2 [文献标志码] A [文章编号] 1007⁃4368(2024)09⁃1257⁃05
doi:10.7655/NYDXBNSN240511
Study on rs⁃fMRI in different degrees of obesity children aged 7-15 years based on ReHo
LI Qian,WANG Xin,YANG Ming *
Department of Radiology,Children’s Hospital of Nanjing Medical University,Nanjing 210008,China
[Abstract] Objective:To observe the features of brain regional homogeneity(ReHo)in children with different degrees of obesity
aged 7-15 years by resting state functional magnetic resonance imaging(rs⁃fMRI). Methods:Resting⁃state fMRI data were collected
from 35 cases obesity children(OB),20 cases obesity children with metabolic syndrome(MS),and 24 cases healthy children(HC).
The data were analyzed,and ReHo differences among the three groups were compared. Then the correlation between the different brain
regions and clinical data was analyzed. Results:Compared with HC group,the ReHo values of right fusiform gyrus and left inferior
temporal gyrus in OB group and MS group were higher. The ReHo values of right medial superior frontal gyrus and left dorsolateral
superior frontal gyrus decreased. Compared with OB group,the ReHo value of left dorsolateral superior frontal gyrus in MS group was
lower. The ReHo values of left dorsolateral superior frontal gyrus were negatively correlated with alanine aminotransferase(ALT)and
aspartate aminotransferase(AST)(r=-0.350,P=0.009;r=-0.294,P=0.029). Conclusion:Obese children have abnormal functional
activity in brain areas such as participating in feeding regulation and inhibitory control,and the abnormal activity in the left
dorsolateral superior frontal gyrus is associated with the degree of obesity,which may provide imaging evidence for early intervention
and treatment.
[Key words] obese children;metabolic syndrome;brain function;regional homogeneity
[J Nanjing Med Univ,2024,44(09):1257⁃1261]
[1]
随着人民生活水平的提高以及生活方式的改 变,儿童肥胖率正在以惊人的速度增长 。《中国健
康与营养调查》显示,1993—2015年,我国7~15岁儿
[2]
[基金项目] 国家自然科学基金(82101999) 童肥胖率已接近 20% 。肥胖易引起高血压、高血
脂、2 型糖尿病、脂肪肝等相关并发症,从而导致儿
∗
通信作者(Corresponding author),E⁃mail:yangming19710217@
[3]
163.com 童代谢综合征(metobolic syndrom,MS) ,并有进一

