肠道菌群失调对代谢综合征儿童免疫功能及血清炎症因子的影响

2020-11-06 05:42袁和秀
中国医学创新 2020年24期
关键词:代谢综合征肠道菌群免疫功能

袁和秀

【摘要】 目的:探討肠道菌群失调对代谢综合征(MS)儿童免疫功能及血清炎症因子的影响。方法:选取2017年8月-2019年6月本院辖区内查体筛选出的128例MS患儿。经粪便涂片检查,肠道菌群失调的有76例,在出现肠道菌群失调的患儿中随机选择52例作为A组,其他未出现肠道菌群失调的52例代谢综合征患儿作为B组,随机选择查体正常的健康儿童52例作为C组。比较三组体格与血生化检查结果和免疫功能及血清炎症因子检测结果。结果:三组BMI、腰臀比、SBP、DBP、TG、FBG、HDL-C比较,差异均有统计学意义(P<0.05)。三组IgA、IgM、IgG水平比较,差异均有统计学意义(P<0.05)。C组IgA、IgM、IgG水平均低于A组和B组,B组IgM、IgG水平均低于A组,差异均有统计学意义(P<0.05)。三组TNF-α、IL-6、hs-CRP水平比较,差异均有统计学意义(P<0.05);C组TNF-α、IL-6、hs-CRP水平均低于A组和B组,B组TNF-α、hs-CRP水平均低于A组,差异均有统计学意义(P<0.05)。结论:肠道菌群的改变与MS相关,一旦失调,会打破机体的免疫平衡,导致MS儿童免疫功能下降,血清炎症因子上升。

【关键词】 肠道菌群 代谢综合征 免疫功能 血清炎症因子

[Abstract] Objective: To investigate the effects of intestinal flora imbalance on immune function and serum inflammatory factors in children with metabolic syndrome (MS). Method: A total of 128 children with MS were selected from August 2017 to June 2019 within the jurisdiction of our hospital. According to stool smear, 76 cases had intestinal flora imbalance, among the children with intestinal flora imbalance, 52 cases were randomly selected as group A, 52 cases of MS without intestinal flora imbalance were selected as group B, and 52 cases of healthy children with normal physical examination were randomly selected as group C. The results of physical and blood biochemical examination, immune function and serum inflammation were compared among three groups. Result: The differences in BMI, waist-hip ratio, SBP, DBP, TG, FBG and HDL-C among three groups were statistically significant (P<0.05). Comparison of IgA, IgM and IgG levels among three groups, the differences were statistically significant (P<0.05). The IgA, IgM and IgG levels of group C were all lower than those of group A and B, and the IgM and IgG levels of group B were all lower than those of group A, there were statistically significant differences (P<0.05). The levels of TNF-α, IL-6 and hs-CRP in the three groups were significantly different (P<0.05). The levels of TNF-α, IL-6 and hs-CRP in group C were all lower than those in group A and B, and the levels of TNF-α and hs-CRP in group B were lower than those in group A, there were statistically significant differences (P<0.05). Conclusion: The change of intestinal flora is related to MS. Once the imbalance occurs, the immune balance of the body will be disturbed, leading to the decrease of immune function and the increase of serum inflammatory factors in children with MS.

[Key words] Intestinal flora Metabolic syndrome Immune function Serum inflammatory factor

研究显示,肠道菌群失调导致肠道细菌死亡后,脂多糖(LPS)作为细胞内毒素从溶解的菌体释放入肠道环境并进入血液循环,与其受体蛋白LPS结合蛋白相结合后引发宿主炎症级联反应,导致机体固有免疫被激活,通过一系列信号转导过程导致IL-6、TNF-α等炎症因子的大量表达[19-20]。因此,肠道菌群失调患者经常处于一种长期、慢性轻度炎症状态。本研究发现,C组TNF-α、IL-6、hs-CRP水平均低于A组和B组,B组TNF-α、hs-CRP水平均低于A组,差异均有统计学意义(P<0.05)。表明肠道菌群具有抗炎的作用,当肠道菌群失调时,人体会发生炎症反应,并影响着MS的发生,与上述研究结果一致。

综上所述,肠道菌群的改变与MS相关,一旦失调,会打破机体的免疫平衡,导致MS儿童免疫功能下降,血清炎症因子上升。通过平衡肠道菌群的结构,可以改善免疫功能,减少机体的炎症反应的发生,这为治疗MS儿童提供了新的依据。

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(收稿日期:2020-02-10) (本文编辑:姬思雨)

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