1.佛山大学动物科技学院,广东佛山
2.军事科学院军事医学研究院,北京
DENG Hua, E-mail: denghua@fosu.edu.cn
Received:12 April 2025,
Revised:22 June 2025,
Accepted:03 July 2025,
Published:15 August 2025
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李刻勤,郝延辉,刘莹,等.2.65 GHz射频长期辐射对小鼠机体炎症反应和肠道微生态的影响[J].陆军军医大学学报,2025,47(15):1815-1824.DOI:10.16016/j.2097-0927.202504048.
LI K Q,HAO Y H,LIU Y,et al.Effects of long-term 2.65 GHz radiofrequency radiation on inflammatory response and intestinal microbiota in mice[J].J Army Med Univ,2025,47(15):1815-1824.DOI:10.16016/j.2097-0927.202504048.
李刻勤,郝延辉,刘莹,等.2.65 GHz射频长期辐射对小鼠机体炎症反应和肠道微生态的影响[J].陆军军医大学学报,2025,47(15):1815-1824.DOI:10.16016/j.2097-0927.202504048. DOI:
LI K Q,HAO Y H,LIU Y,et al.Effects of long-term 2.65 GHz radiofrequency radiation on inflammatory response and intestinal microbiota in mice[J].J Army Med Univ,2025,47(15):1815-1824.DOI:10.16016/j.2097-0927.202504048. DOI:
目的
2
探讨2.65 GHz长期射频辐射(radiofrequency radiation,RFR)对小鼠行为学、机体炎症反应和肠道微生态的影响,为射频辐射长期暴露的安全性评估提供依据。
方法
2
108只C57BL/6N雄性小鼠(体质量17~21 g,6~8周龄)按照随机数字表法分为对照(Con)组和RFR组;通过电磁混响室模拟2.65 GHz射频辐射场对小鼠进行全身均匀暴露,时间为3 h/d,持续28 d;采用电磁辐射分析仪和光纤测温仪检测射频辐射场强分布和小鼠核心体温的变化;Y-迷宫和新物体识别实验检测射频辐射对小鼠认知功能的影响;旷场和高架十字迷宫实验检测射频辐射对小鼠焦虑情绪的影响;糖水偏好和悬尾实验检测射频辐射对小鼠抑郁情绪的影响;HE染色观察小鼠组织结构;放射免疫法检测小鼠血清、脑、空肠和脾脏中促炎因子肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白介素-1β(interleukin-1β,IL-1β)和抑炎因子白介素-4(interleukin-4,IL-4)、白介素-10(interleukin-10,IL-10)的表达;采用宏基因组测序技术检测小鼠肠道微生态的变化。
结果
2
本实验条件下长期射频辐射引起小鼠核心温度最大升幅达0.59 ℃;对小鼠认知、焦虑和抑郁情绪未见明显影响;对小鼠海马和空肠组织结构未见明显损伤;引起小鼠血清中促炎因子TNF-α表达显著上调(
P
<
0.05),并未引起其他细胞因子(IL-1β、IL-4、IL-10)的含量改变;引起小鼠肠道菌群α多样性显著下降(
P
<
0.01),在种水平上鼠乳酸杆菌(
Ligilactobacillus murinus
)和乙酰因子属菌(
Acetatifactor muris
,
Acetatifactor aquisgranensis
)相对丰度显著减少(
P
<
0.05),毛螺科菌(
Lachnospiraceae bacterium
)相对丰度显著增多(
P
<
0.01)。
结论
2
2.65 GHz长期射频辐射引起小鼠机体发生炎症反应以及肠道微生态紊乱。
Objective To investigate the effects of long-term radiofrequency (RF) radiation at 2.65 GHz on behavior
inflammatory response
and intestinal microecology in mice in order to provide a basis for the safety assessment of long-term RF exposure. Methods One hundred and eight male C57BL/6N mice (17~21 g
6~8 weeks old) were randomly assigned to a control group (Con) and a RF exposure group. The mice of the RF exposure group were subjected to whole-body uniform exposure to 2.65 GHz RF radiation in an electromagnetic reverberation chamber for 3 h/day for 28 consecutive days. RF field distribution and changes in core body temperature were monitored using an electromagnetic radiation analyzer and a fiber-optic temperature probe
respectively. Cognitive function was assessed using the Y-maze and novel object recognition (NOR) test. Anxiety-like behaviors were evaluated through open field test (OFT) and elevated plus
maze (EPM)
while depressive-like behaviors were examined with sucrose preference test (SPT) and tail suspension test (TST). HE staining was used to observe the histopathological changes in mouse tissues. Radioimmunoassay (RIA) was employed to detect the expression of pro-inflammatory cytokines
TNF-α and IL-1β
as well as anti-inflammatory cytokines
IL-4 and IL-10 in the serum
brain
jejunum
and spleen samples. Additionally
metagenomic sequencing was performed to assess alterations in the gut microbiota composition. Results Long-term RF radiation led to a maximal increase of 0.59 ℃ in the core body temperature
but had no significant effects on cognitive function
anxiety-like behaviors
or depressive-like behaviors
or apparent damage of the hippocampal or jejunal tissues in the exposed mice. However
RF exposure significantly up-regulated the expression of the pro-inflammatory cytokine TNF-α in serum (
P
<
0.05)
and did not significantly alter the concentrations of other cytokines (IL-1β,IL-4,IL-10)
caused significant decrease in α-diversity of the intestinal microbiota (
P
<
0.01)
with reduced relative abundances of
Ligilactobacillus murinus
and
Acetatifactor muris
(
P
<
0.05)
while elevated abundances of
Lachnospiraceae bacterium
(
P
<
0.01). Conclusion Long-term exposure to 2.65 GHz RF radiation induces systemic inflammatory responses and disrupts gut microbiota homeostasis in mice.
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