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17 March 2018 : Animal Research  

Sinomenine Attenuates Chronic Intermittent Hypoxia-Induced Lung Injury by Inhibiting Inflammation and Oxidative Stress

Xiaofeng Zhang1ABCDEFG, Lijun Rui1BCDEF, Mei Wang1BCD, Hairong Lian1EF, Liming Cai1ABCDEFG*

DOI: 10.12659/MSM.906577

Med Sci Monit 2018; 24: ANS1574-1580

Abstract

BACKGROUND: In the present study, we aimed to investigate the effects of sinomenine (SIN) on chronic intermittent hypoxia (CIH)- induced lung injury in rats, and to explore the underlying mechanisms.

MATERIAL AND METHODS: To perform the investigation, a CIH rat model was established. ELISA assay was applied to detect the level of inflammatory cytokines. Oxidative stress bio-markers (MDA, SOD, and CAT) were determined in lung tissues. In addition, the expression level of NADPH oxidase 2 (Nox2) was analyzed by Western blotting and qRT-PCR, respectively.

RESULTS: The results showed that compared with other groups, more obvious pulmonary pathological changes were observed in the CIH group. The level of inflammatory cytokines in the CIH group was markedly higher than that in the control and Con-S groups. Compared with the control and Con-S groups, oxidative stress was notably increased in the CIH group. Expression of Nox2 was also increased in the CIH group. The effects caused by CIH in rats were attenuated by SIN treatment.

CONCLUSIONS: SIN can reverse chronic intermittent hypoxia-induced lung injury through inhibiting inflammation and oxidative stress.

Keywords: Lung Injury, Oxidative Stress, Sinomenium, Sleep apnea, obstructive

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750