Carcinogenesis, Teratogenesis & Mutagenesis ›› 2019, Vol. 31 ›› Issue (1): 22-28.doi: 10.3969/j.issn.1004-616x.2019.001.004

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Effects of Trollius altaicus extract powder on PM2.5-induced lung injury in rats

CHEN Wenlong1, YOU Shuping2, ZHAO Jun3, ZHANG Jie4, LIU Tao1   

  1. 1. Department of Health Toxicology, School of Public Health, Xinjiang Medical University, Urumqi 830011;
    2. Department of Nursing, School of Nursing, Xinjiang Medical University, Urumqi 830011;
    3. Key Laboratory of Uyghur Medicine, Xinjiang Institute of Materia Medica, Urumqi 830011;
    4. Laboratory of School of Public Health, Xinjiang Medical University, Urumqi 830011, Xinjiang, China
  • Received:2018-10-19 Revised:2018-11-30 Online:2019-01-31 Published:2019-01-31

Abstract: OBJECTIVE:To study protective effect of Trollius altaicus extract powder (TAEP) on PM2.5-induced acute lung injury (ALI) in rats. METHODS:Sixty SD rats were randomly divided into normal control (normal saline),model (normal saline),TAEP 125 mg/kg,250 mg/kg,500 mg/kg,and dexamethasone positive control (2 mg/kg) groups. Each dose group was orally administered with the test substance for 30 days. Except the normal control group,the other groups were instilled with PM2.5 suspension on the 30th day,causing acute lung injury in rats. Blood samples were collected from the abdominal aorta. Leukocyte count was performed and serum lactate dehydrogenase(LDH),superoxide dismutase(SOD),glutathione(GSH) and malondialdehyde(MDA) were analyzed. Nitric oxide(NO),interleukin-6(IL-6),interleukin-1β(IL-1β),TNF-alpha(TNF-α) were measured. The right upper lobe was taken for histopathological examination,the lower lobe was weighed to calculate the wet/dry weight ratio (W/D),the left lung was taken for alveolar lavage,and the alveolar lavage fluid (BALF) was collected to detect the contents of IL-6,IL-1beta and TNF-alpha. RESULTS:Compared with the normal control group,the white blood cell count,IL-6,IL-1β and TNF-α levels in serum and BALF were increased (P < 0.01),and serum LDH,MDA and NO levels were increased (P < 0.01),the W/D of lung tissue increased (P < 0.01),and the content of SOD and GSH decreased (P < 0.01). Compared with the model group,the white blood cell count of each dose of TAEP,IL-6 and IL in serum and BALF -1β,TNF-α decreased (P < 0.05 or P < 0.01),serum LDH,MDA,NO content decreased (P < 0.05 or P < 0.01),and lung tissue W/D decreased (P average < 0.05 or P < 0.01),SOD and GSH levels increased (P < 0.05 or P < 0.01); TAEP 500 mg/kg group decreased white blood cell count,serum,BALF IL-1β,IL-6,TNF -α content decreased,serum LDH,MDA,NO content decreased,SOD,GSH content increased,lung W/D decreased compared with dexamethasone group (P < 0.05). CONCLUSION:The results indicate that the Trollius altaicus extract powder has a protective effect on PM2.5-induced lung injury in rats.

Key words: Trollius altaicus, extract powder, PM2.5, acute lung injury, protection

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