• 1. Guangdong Pharmaceutical University, Guangzhou, Guangdong 510006, P. R. China;
  • 2. Institute of Radiational Chinese Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Beijing 100850, P. R. China;
HUANG Rongqing, Email: hrongqing@163.com
Export PDF Favorites Scan Get Citation

Objective  To explore composition of volatile organic compounds (VOCs) in exhaled breath of low-dose radiation-damaged Sprague-Dawely (SD) rats by thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS), and search for the differential metabolites of VOCs in the series of rats after radiation damage, and establish a noninvasive radiation damage detection method. Methods  SD rats were randomly divided into five groups (a blank group, a 0.5-Gy group, a 1-Gy group, a 2-Gy group, and a 3-Gy group), with 8 rats in each group. A low-dose radiation injury model was established in rats. After the cobalt source radiation damage was performed, the body weight of rats was recorded, peripheral blood hematology was analyzed, and the exhaled breath of rats was collected on the 1st, 5th, 9th and 13th day. The composition of VOCs in the exhaled breath was analyzed by using the TD30-GC-MS technique, and multivariate statistical analyses were carried out to explore and obtain the differentiated metabolites after the radiation damage. Results  After radiation damage, the rats showed a short-term decrease in body weight, peripheral blood and lung tissue sections were different, and the content of VOCs components in the exhaled breath of the damaged rats was significantly different from that of the rats in the blank group. Among them, four VOCs, acetophenone, nonanal, decanal and tetradecane increased, while heptane, chlorobenzene, paraxylene and m-dichlorobenzene decreased. Conclusions  Through the GC-MS analysis of the exhaled breath of rats, eight components of VOCs in the exhaled breath of rats can be used as differential metabolites of radiation damage. This study lays a foundation for the establishment of a GC-MS analysis method for the components of VOCs in the exhaled breath of rats, as well as for the development of a nondestructive analytical assay for biological radiation damage.

Citation: XIE Xiaoyun, TANG Jian, XIAO Bingkun, MIAO Xiaoyao, LI Zhiheng, HUANG Rongqing. Gas chromatography-mass spectrometry study on composition of volatile organic compounds in exhaled breath of radiation-damaged rats. Chinese Journal of Respiratory and Critical Care Medicine, 2024, 23(5): 340-345. doi: 10.7507/1671-6205.202311059 Copy

  • Previous Article

    Pathological diagnostic value of respiratory optical coherence tomography in lung cancer
  • Next Article

    以发热并发气促、咯血为表现的鹦鹉热衣原体肺炎一例报告并文献复习