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中国精品科技期刊2020
孔海军,张亮,谌晓安. 阿里红多糖对运动性免疫抑制大鼠肠道菌群及免疫功能的影响[J]. 食品工业科技,2024,45(21):1−10. doi: 10.13386/j.issn1002-0306.2023110215.
引用本文: 孔海军,张亮,谌晓安. 阿里红多糖对运动性免疫抑制大鼠肠道菌群及免疫功能的影响[J]. 食品工业科技,2024,45(21):1−10. doi: 10.13386/j.issn1002-0306.2023110215.
KONG Haijun, ZHANG Liang, CHEN Xiaoan. Effect of Fomes officinalis Ames Polysaccharides on Intestinal Flora and Immune Function in Exercise-induced Immunosuppression Rats[J]. Science and Technology of Food Industry, 2024, 45(21): 1−10. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023110215.
Citation: KONG Haijun, ZHANG Liang, CHEN Xiaoan. Effect of Fomes officinalis Ames Polysaccharides on Intestinal Flora and Immune Function in Exercise-induced Immunosuppression Rats[J]. Science and Technology of Food Industry, 2024, 45(21): 1−10. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023110215.

阿里红多糖对运动性免疫抑制大鼠肠道菌群及免疫功能的影响

Effect of Fomes officinalis Ames Polysaccharides on Intestinal Flora and Immune Function in Exercise-induced Immunosuppression Rats

  • 摘要: 目的:探讨不同剂量阿里红多糖(Fomes officinalis Ames polysaccharides,FOP)对运动性免疫抑制(Exercise-induced immunosuppression,EIS)大鼠肠道菌群及免疫功能的保护作用。方法:50只7~8周龄SPF级雄性SD大鼠随机分为对照组(NC组)、运动训练组(Ex组)、运动训练+低剂量FOP组(LFOP组,40 mg/(kg·d))、运动训练+中剂量FOP组(MFOP组,60 mg/(kg·d))和运动训练+高剂量FOP组(HFOP组,80 mg/(kg·d))。Ex组和各剂量FOP组采用6周跑台训练构建EIS模型,LFOP、MFOP、HFOP组每次训练后灌胃FOP。干预结束后,酶联免疫吸附试验检测血清免疫球蛋白G(Immunoglobulin G,IgG)、免疫球蛋白M(Immunoglobulin M,IgM)、白介素6(Interleukin-6,IL-6)、白介素10(Interleukin-10,IL-10)、干扰素γ(Interferon-γ,INF-γ)、肿瘤坏死因子α(Tumor necrosis factor-α,TNF-α)、脂多糖(Lipopolysaccharide,LPS)水平及肠道短链脂肪酸含量;细胞分析仪检测血清CD4+、CD8+的数量;16S rDNA检测大鼠肠道菌群结构变化;Western blot检测结肠组织紧密连接蛋白(Zonula occludens-1,ZO-1)、封闭蛋白(Occludin)、紧密连接蛋白4(Claudin4)蛋白表达。结果:与Ex组比较,LFOP、MFOP、HFOP组大鼠血清IgG、IgM、INF-γ、TNF-α、CD4+和CD8+极显著上升(P<0.01),血清IL-6、IL-10和LPS水平极显著降低(P<0.01);肠道短链脂肪酸含量和拟杆菌门、疣微菌门及乳杆菌属、拟杆菌属、毛螺菌属(未分类)、艾克曼菌属相对丰度极显著上升(P<0.01);结肠组织ZO-1、Occludin、Claudin4蛋白表达极显著上调(P<0.01)。此外,MFOP、HFOP组大鼠脾脏指数、胸腺指数、肠道菌群α多样性较Ex组极显著上升(P<0.01)。结论:FOP可能通过减轻炎症改善肠道菌群结构及活性,提高机体免疫功能,进而抑制EIS的发生发展。

     

    Abstract: Objective: To investigate the protective effects of different doses of Fomes officinalis Ames polysaccharides (FOP) on intestinal flora and immune function in exercise-induced immunosuppression (EIS) rats. Methods: Fifty SPF male SD rats aged 7 to 8 weeks were randomly divided into control group (NC group), exercise training group (Ex group), exercise training+low-dose FOP group (LFOP group, 40 mg/(kg·d)), exercise training+medium-dose FOP group (MFOP group, 60 mg/(kg·d)) and exercise training+high-dose FOP group (HFOP group, 80 mg/(kg·d)). Ex group and FOP group were trained on the treadmill for 6 weeks to construct EIS model. LFOP, MFOP and HFOP groups were given FOP after each training. After the intervention, serum IgG, IgM, IL-6, IL-10, INF-γ, TNF-α, LPS levels and intestinal short-chain fatty acid content were detected by enzyme-linked immunosorbent assay. The number of serum CD4+ and CD8+ was detected by cell analyzer. 16S rDNA was used to detect the structural changes of intestinal flora. Western blot was used to detect the protein expression of ZO-1, Occludin, Claudin4 in the colon tissue. Results: Compared with Ex group, serum IgG, IgM, INF-γ, TNF-α, CD4+ and CD8+ of rats in LFOP, MFOP and HFOP groups were significantly increased (P<0.01), while serum levels of IL-6, IL-10 and LPS were significantly decreased (P<0.01). Intestinal short-chain fatty acid content and the relative abundance of Bacteroidetes, Verrucobacteria and Lactobacillus, Bacteroidetes, Spirillum (not classified) and Ekmanella were significantly increased (P<0.01). The expression of ZO-1, Occludin, Claudin4 proteins in colon tissue was significantly up-regulated (P<0.01). In addition, spleen index, thymus index, intestinal flora alpha diversity in MFOP and HFOP groups were significantly increased compared with Ex group (P<0.01). Conclusion: FOP may improved the structure and activity of intestinal flora by reducing inflammation, enhanced the body's immune function, and then inhibited the development of EIS.

     

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