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Abstract Title:

[Protective effect ofagainst oxidative stress in neonatal mice with necrotizing enterocolitis].

Abstract Source:

Nan Fang Yi Ke Da Xue Xue Bao. 2019 Oct 30 ;39(10):1221-1226. PMID: 31801706

Abstract Author(s):

Jia Tang, Chunbao Guo, Fang Gong

Article Affiliation:

Jia Tang

Abstract:

OBJECTIVE: To investigate the protective effect ofDSM17938 strain against oxidative stress in a neonatal mouse model of necrotizing enterocolitis (NEC) and explore the possible mechanism.

METHODS: Ninety-six 10-day-old neonatal C57BL/6J mice were equally randomized into control group, NEC group, and NEC+group. The pathological changes of the ileocecal intestinal tissue were evaluated with HE staining and double-blind pathological scoring. The mRNA and protein expressions of tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) in the intestinal tissues were detected using quantitative real-time PCR and ELISA, respectively. Colorimetric assays were used to determine the activity of superoxide dismutase (SOD) and its inhibition rate, malondialdehyde (MDA), glutathione (GSH), oxidizedglutathione (GSSG), and GSSG/ GSH ratio.

RESULTS: Compared with those in the control group, the neonatal mice in NEC group showed significant weight loss (<0.05), obvious intestinal injury, increased pathological scores (<0.05), increased expressions of TNF-α and IL-1β mRNA and proteins (<0.05), decreased SOD activity and inhibition rate, decreased GSH, and significantly increased MDA, GSSG, and GSSG/GSH ratios (<0.05). Treatment withobviously decreased the pathological scores, expressions of TNF-α and IL-1β (<0.05), MDA, GSSG, and GSSG/GSH ratio (<0.05), and significantly increased SOD activity, its inhibition rate, and GSH level in the mice with NEC, but the survival rate was not significantly different between NEC and-treated groups (>0.05).

CONCLUSIONS: DSM17938 can offer protection against NEC in mice by reducing oxidative stress and increasing antioxidant capacity of the intestinal tissue to suppress intestinal inflammations.

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