Topological Organization of Metabolic Brain Networks in Pre-Chemotherapy Cancer with Depression: A Resting-State PET Study.
This study aimed to investigate the metabolic brain network and its relationship with depression symptoms using 18F-fluorodeoxyglucose positron emission tomography data in 78 pre-chemotherapy cancer patients with depression and 80 matched healthy subjects. Functional and structural imbalance or disruption of brain networks frequently occur following chemotherapy in cancer patients. However, few studies have focused on the topological organization of the metabolic brain network in cancer with depression, especially those without chemotherapy. The nodal and global parameters of the metabolic brain network were computed for cancer patients and healthy subjects. Significant decreases in metabolism were found in the frontal and temporal gyri in cancer patients compared with healthy subjects. Negative correlations between depression and metabolism were found predominantly in the inferior frontal and cuneus regions, whereas positive correlations were observed in several regions, primarily including the insula, hippocampus, amygdala, and middle temporal gyri. Furthermore, a higher clustering efficiency, longer path length, and fewer hubs were found in cancer patients compared with healthy subjects. The topological organization of the whole-brain metabolic networks may be disrupted in cancer. Finally, the present findings may provide a new avenue for exploring the neurobiological mechanism, which plays a key role in lessening the depression effects in pre-chemotherapy cancer patients.
Department of radiology, Qilu Hospital, First Affiliated Hospital of Shandong University, 107 Cultural West Road, Jinan, 250012, Shandong Province, P.R.China.|PET/CT Center, Affiliated Lanzhou General Hospital of Lanzhou Military Area Command, 333 South Binhe Road, Lanzhou, 730050, Gansu Province, P.R.China.
Lei
L
Fang
School of Information Science and Engineering, Lanzhou University, Lanzhou, Gansu Province, 730000, P.R.China.
Zhijun
Z
Yao
Nuclear Medicine Department, Affiliated Lanzhou General Hospital of Lanzhou Military Area Command, 333 South Binhe Road, Lanzhou, 730050, Gansu Province, P.R.China.
Jianping
J
An
School of Information Science and Engineering, Lanzhou University, Lanzhou, Gansu Province, 730000, P.R.China.
Xuejiao
X
Chen
School of Information Science and Engineering, Lanzhou University, Lanzhou, Gansu Province, 730000, P.R.China.
Yuanwei
Y
Xie
Nuclear Medicine Department, Affiliated Lanzhou General Hospital of Lanzhou Military Area Command, 333 South Binhe Road, Lanzhou, 730050, Gansu Province, P.R.China.
Hui
H
Zhao
PET/CT Center, Affiliated Lanzhou General Hospital of Lanzhou Military Area Command, 333 South Binhe Road, Lanzhou, 730050, Gansu Province, P.R.China.
Junfeng
J
Mao
PET/CT Center, Affiliated Lanzhou General Hospital of Lanzhou Military Area Command, 333 South Binhe Road, Lanzhou, 730050, Gansu Province, P.R.China.
Wangsheng
W
Liang
Department of radiology, Qilu Hospital, First Affiliated Hospital of Shandong University, 107 Cultural West Road, Jinan, 250012, Shandong Province, P.R.China.
Xiangxing
X
Ma
D000328:Adult; D001921:Brain / Q000378:metabolism* / Q000473:pathology; D001931:Brain Mapping; D003863:Depression / Q000150:complications / Q000378:metabolism* / Q000473:pathology; D003866:Depressive Disorder / Q000150:complications / Q000378:metabolism* / Q000473:pathology; D005260:Female; D005947:Glucose / Q000378:metabolism; D006801:Humans; D008297:Male; D053858:Metabolic Networks and Pathways; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications / Q000378:metabolism* / Q000473:pathology; D049268:Positron-Emission Tomography
D005947:Glucose