Mechanism of the therapeutic effect of Tetrandrine on striatum injury caused by microwave radiation
10.3760/cma.j.cn112271-20230113-00010
- VernacularTitle:粉防己碱对微波辐射致纹状体损伤的治疗作用及机制探讨
- Author:
Xiaoxu KONG
1
;
Zhihua FENG
;
Xuejia WANG
;
Ganghua HE
;
Ting PAN
;
Zhengtao XU
;
Yumeng YE
;
Yanhui HAO
;
Hongyan ZUO
;
Yang LI
Author Information
1. 安徽医科大学生命科学研究院，合肥 230032
- Keywords:
Tetrandrine;
Microwave radiation;
Striatal;
Voltage-gated calcium channel
- From:
Chinese Journal of Radiological Medicine and Protection
2023;43(5):328-334
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the therapeutic effect Tetrandrine (TET) on striatal injury caused by microwave radiation and underlying mechanism.Methods:C57BL/6N mice were randomly divided into blank control group (C), radiation control group (R), TET group (TET) and TET combined with radiation group (TET+ R). The mice of radiation group were exposed to 2.856 GHz 8 mW/cm2 microwave on whole-body for 15 min. TET (60 mg/kg) was injected intraperitoneally once a day for 3 consecutive days. The TET structure was verified by ultraviolet spectrophotometry. The open field experiment was used to detect the change of anxiety in mice. Histopathological and ultrastructural changes of the striatum were observed by light microscopy and transmission electron microscopy (TMT). Quantitative real-time PCR (qPCR) was used to detect gene expression changes of voltage-gated calcium channel (VGCC) subtype in the striatum.Results:The open field experiments showed that the time and distance of mice to explore the central region after microwave radiation were significantly lower than that before radiation ( t=4.60, 5.18, P<0.01), and the TET administration significantly improved these changes ( F=1.43, 4.37, P < 0.05). 7 d after microwave radiation, some neuronal nuclei in the striatum of mice contracted and could be stained deeply, which was more obvious in the globus pallidus area. The partial neuronal apoptosis, swelling and cavitation of glial cell mitochondria, blurring of synaptic gaps, and widening of perivascular gaps in the striatum were observed by TMT. The above lesions were significantly rescued after TET administration. But both microwave radiation and TET administration had no significant effect on the gene expressions of striatal VGCC ( P > 0.05). Conclusions:TET has a therapeutic effect on anxiety-like behavior and structural damage of striatum caused by microwave radiation, which is independent of the expression of striatal VGCC genes.
