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  • Title: [Effect of Trichinella spiralis and its worm-derived proteins on CLP-induced sepsis in mice].
    Author: Li HH, He WX, Song D, Wu Q, Li N, Wan YK, Zhang H, Qiu DP, Chu L, Wang LY, Yang XD, Fang Q.
    Journal: Nan Fang Yi Ke Da Xue Xue Bao; 2016 Aug 20; 36(8):1048-54. PubMed ID: 27578571.
    Abstract:
    OBJECTIVE: To observe the effect of Trichinella spiralis and its worm-derived proteins on cecal ligation and puncture (CLP)-induced sepsis in mice. METHODS: Eighty male BALB/c mice were randomly divided into sham-operated group, CLP group, Trichinella spiralis muscle larvae (ML) pre-infection group (ML+CLP group), soluble muscle larvae proteins (SMP) treatment group (SMP+CLP group) and excretory-secretory proteins (MES) treatment group (MES+CLP group). In ML+CLP group, the mice were orally infected with 300 Trichinella spiralis muscle larvae at 28 days before CLP and those in the other groups were intraperitioneally injected with PBS or SMP (25 µg/mice) or MES (25µg/mice) 30 min after CLP. The general condition and 72-h survival after CLP of the mice were observed. The levels of alanine transaminase (ALT), aspartate transaminase (AST), blood urea nitrogen (BUN), creatinine (Cr), TNF-α, IL-6, IL-1β, IL-10 and TGF-β were measured at 12 h after the operation, and the pathological changes of the liver and kidney were observed. RESULTS: s Compared with the sham-operated mice, the mice in CLP group showed decreased 72-h survival, obviously increased ALT, AST, BUN, Cr, TNF-α, IL-6, IL-1β, IL-10, and TGF-β with hepatic cords disorder, hepatocytes swelling, glomerulus shrinkage, and renal tubular cell edema. Compared with CLP group, the mice in ML+CLP group showed lowered levels of ALT, AST, Cr, TNF-α and IL-1β and increased levels of IL-10 and TGF-β; in SMP+CLP group, the levels of ALT, AST, Cr, TNF-α and IL-1β were decreased and TGF-β increased. In MES+CLP group, the mice showed obviously increased 72-h survival with lowered levels of ALT, AST, BUN, Cr, TNF-α, IL-6 and IL-1β, increased levels of IL-10 and TGF-β, and alleviated liver and kidney damages. CONCLUSION: Trichinella spiralis and its worm-derived proteins can decrease the levels of pro-inflammatory cytokines and increase immunomodulatory cytokines, and MES has more potent effect to reduce structural and functional damages of the liver and kidney.
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