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The injuries of spleen and intestinal immune system induced by 2-Gy 60Co γ-ray whole-body irradiation.
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- Author(s): Wang, An; Shi, Zhongyu; Wang, Lei; Wang, Yan; Chen, Xiaoying; He, Changhao; Zhang, Xiaomeng; Xu, Wenhui; Fu, Qian; Wang, Tieshan; Zhang, Shujing; Gao, Yushan; Hu, Sumin
- Source:
International Journal of Radiation Biology; 2023, Vol. 99 Issue 3, p406-418, 13p- Subject Terms:
- Source:
- Additional Information
- Abstract: The aim of the present study was to investigate the injuries of spleen and intestinal immune system induced by 2 Gy 60Co γ ray in mice. A total of 120 Balb/c mice were randomly divided into two groups: blank control (Ctrl) and model (IR). The IR mice were exposed to a single dose of total body irradiation (2 Gy, dose rate: 1 Gy/min) and sacrificed on 1st, 3rd, 7th, 14th and 21st day after irradiation. The indicators including general observations and body weight, the changes in peripheral hemogram, spleen index, histopathology examination and lymphocyte subsets of spleen. As well as the count and subsets of lymphocyte in gut-associated lymphoid tissue. Compared with the Ctrl group, the body weight, spleen index, peripheral blood cell and splenocyte amounts, intraepithelial lymphocytes number decreased significantly after exposure, accompanied by a notable decreased count of lymphocytes in Peyer's patch and mesenteric lymph nodes. Moreover, ionizing radiation also broke the balance of CD4+/CD8+ and increased the Treg proportion in spleen, which then triggered immune imbalance and immunosuppression. In general, the spleen injuries occurred on 1st day after exposure, worse on 3rd day, and were relieved on 7th day. The intestinal immune injuries were observed on 1st day, and attenuated on 3rd day. On 21st day after exposure, the spleen volume and index have returned to normal, except for the distribution of lymphocyte subpopulations. Furthermore, all indicators of gut-associated lymphoid tissue, except for mesenteric lymph nodes lymphocyte count, had returned to normal levels on 21st day. In conclusion, our data showed the injuries of spleen and intestinal immune system induced by 2 Gy 60Co γ ray whole-body irradiation. These findings may provide the bases for further radiation protection in the immunity. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of International Journal of Radiation Biology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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