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ORIGINAL RESEARCH article
Front. Neurosci.
Sec. Brain Imaging Methods
Volume 19 - 2025 | doi: 10.3389/fnins.2025.1548744
Radiation-induced white matter dysfunction in patients with nasopharyngeal carcinoma
Provisionally accepted- 1 Changsha Fourth Hospital, Changsha, Hunan Province, China
- 2 Sun Yat-sen University Cancer Center (SYSUCC), Guangzhou, Guangdong Province, China
- 3 Independent researcher, Shanghai, China
- 4 Xi'an University of Finance and Economics, Xi'an, China
- 5 Xiangya Hospital, Central South University, Changsha, China
Radiation-induced structural abnormalities in white matter (WM) have been reported in patients with nasopharyngeal carcinoma (NPC); however, the alterations in functional domain were insufficiently investigated. A total of 111 NPC patients were included and these patients, based on whether completed radiation therapy (RT) or not, were divided into pre-RT (n = 47) and post-RT (n = 64) groups. Functional connectivity strength (FCS) between WM regions (WW-FCS) and between WM and gray matter (GM) regions (GW-FCS) was used to investigate the radiation-induced changes in WM function. Compared with the pre-RT patients, post-RT NPC patients showed decreased WW-FCS in the left superior cerebellar peduncle, right anterior limb of internal capsule, bilateral posterior thalamic radiation, and left tapetum. Compared with the pre-RT patients, post-RT NPC patients showed decreased GW-FCS in the left caudate, bilateral visual cortex, and the right ventral prefrontal cortex. In the post-RT group, the GW-FCS in left visual cortex was negatively correlated with radiation dosage for the brain stem (r = -0.35, p = 0.039), and for the left temporal lobe (r = -0.46, p = 0.0058). The GW-FCS in right visual cortex was negatively correlated with radiation dosage for the left temporal lobe (r = -0.38, p = 0.025). Our findings of decreased WW-FCS and GW-FCS in such brain regions (such as visual cortex, posterior thalamic radiation, and anterior limb of internal capsule, as well as superior cerebellar peduncle) suggest potential functional impairments in visual and motor systems.
Keywords: nasopharyngeal carcinoma, radiation-induced brain injury, white matter, functional MRI (fMRI), Visual Cortex
Received: 20 Dec 2024; Accepted: 26 Feb 2025.
Copyright: © 2025 Zheng, Li, Gao, Hu, Deng, Kang and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Youming Zhang, Xiangya Hospital, Central South University, Changsha, China
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