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Rabbit model of radiation-induced lung injury
Zhen-Zong Du1, Hua Ren, Jian-Fei Song
1Cardio-Thoracic Surgery, Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi, China.
Objective:
To explore the feasibility of establishing an animal model of chronic radiation-induced lung injury.
Methods:
Twenty-eight New Zealand white rabbits were randomly divided into 3 groups (the right lung irradiation group, the whole lung irradiation group and the control group). Animal model of radiation-induced lung injury was established by high-does radiotherapy in the irradiation groups, then all rabbits underwent CT and pathological examinations at 1, 2, 4, 8, 12, 16 weeks, respectively after radiation.
Results:
Within 4 weeks of irradiation, some rabbits in the right lung irradiation group and whole lung irradiation group died. CT and pathological examinations all showed acute radiation pneumonitis. At 8-12 weeks after irradiation, CT scanning showed ground glass samples signs, patchy shadows and fibrotic stripes. Pathological examination showed the fibrosis pulmonary alveolar wall thickened obviously.
Conclusions:
The clinical animal model of chronic radiation-induced lung injury which corresponds to practical conditions in clinic can be successfully established.