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猪苓多糖对LPS诱导的急性肺损伤模型大鼠炎症因子的影响

2021-01-06李全有刘海军

中国民族民间医药·下半月 2021年11期
关键词:白介素水平模型

李全有 刘海军

【摘 要】 目的:探究豬苓多糖对LPS诱导的急性肺损伤模型大鼠炎症因子的影响。方法:雄性SD大鼠,腹腔注射LPS(5 mg/kg)构建急性肺损伤模型,用猪苓多糖(250 mg/kg)灌胃进行处理。计算肺组织湿干重比,HE染色检测肺组织病理学变化,ELISA检测血清中转化生长因子(TGF)-α、白介素-6(IL-6)、白介素-10(IL-10)和白介素-1β的水平,肺组织中丙二醛(MDA)、谷胱甘肽过氧化酶(GSH-Px)、髓过氧化物酶(MPO) 和超氧化物歧化酶(SOD)的表达水平。结果:Model组肺组织损伤严重,而猪苓多糖治疗能够有一定程度缓解肺损伤;与Control组相比,Model组肺组织湿干重比,TGF-α、IL-18、IL-6和IL-1β表达,以及MDA和MPO表达水平升高,而GSH-Px和SOD表达水平明显降低,差异均具有统计学意义(P<0.05);与Model组相比,猪苓多糖组肺组织湿干重比,TGF-α、IL-18、IL-6和IL-1β表达水平,以及MDA和MPO表达水平有所降低,而GSH-Px和SOD表达水平升高,差异均具有统计学意义(P<0.05)。结论:猪苓多糖可以缓解LPS诱导的急性肺损伤模型大鼠炎症反应。

【关键词】 猪苓多糖;急性肺损伤模型大鼠;TGF-α;IL-1β;IL-18

【中图分类号】R563.9   【文献标志码】 A    【文章编号】1007-8517(2021)22-0021-04

Effects of Polyporus Umbellatus Polysaccharide on Inflammatory Factors in Rats with LPS-induced Acute Lung Injury

LI Quanyou LIU Haijun

Department of pharmacy, Anyang Hospital of traditional Chinese medicine,Henan Province,Anyang 455000,China

Abstract:Objective To explore the effects of Polyporus umbellatus polysaccharide on inflammatory factors in rats with acute lung injury induced by LPS. Methods Male SD rats were purchased, LPS (5 mg/kg) was injected intraperitoneally to construct an acute lung injury model, and polyporus polysaccharide (250 mg/kg) was administered by gavage. Calculate the wet-to-dry weight ratio of lung tissue, HE staining to detect lung tissue pathological changes, ELISA to detect transforming growth factor(TGF)-α, interleukin-6(IL-6), interleukin-10(IL-10) and interleukin- 1β level, the expression level of malondialdehyde(MDA), glutathione peroxidase(GSH-Px), myeloperoxidase (MPO) and superoxide dismutase (SOD) in lung tissue.Results The lung tissue damage in the Model group was severe, and Polyporus umbellatus polysaccharide treatment could relieve the lung damage to a certain extent; compared with the Control group, the lung tissue wet-to-dry weight ratio, TGF-α, IL-18, IL-6 and IL in the Model group -1β expression, as well as the expression levels of MDA and MPO increased, while the expression levels of GSH-Px and SOD were significantly reduced(P<0.05); compared with the Model group, the lung tissue wet-to-dry weight ratio of the polyporus polysaccharide group, TGF-α, The expression levels of IL-18, IL-6 and IL-1β, as well as the expression levels of MDA and MPO decreased, while the expression levels of GSH-Px and SOD increased (P<0.05).Conclusion Polyporus umbellatus polysaccharide can alleviate the inflammatory response in rats with acute lung injury induced by LPS.

Keywords:Polyporus Umbellatus Polysaccharide;Acute Lung Lnjury Model Rat; TGF-α; IL-1β; IL-18

急性肺损伤(Acute lung injuny,ALI)是一种具有高发病率和死亡率的炎性疾病[1]。ALI或更严重的形式是急性呼吸窘迫综合征(Acute respiratory distress syndrome,ARDS),其特征是严重的肺水肿,肺炎细胞聚集和炎性细胞因子的过量产生,导致強烈的肺部炎症反应[2]。流行病学研究报告[3]指出,ALI仍然是世界范围内重要的公共卫生问题,也是临床医生面临的重大挑战[3]。尽管已采取一些治疗策略来改善功能结局,但ALI患者的死亡率仍然很高,故需要研究ALI的潜在机制和新的治疗方法。猪苓多糖是由中药猪苓提取的多糖类物质,能够提高机体的细胞免疫功能[4],猪苓多糖胶囊和注射剂均已获得中国食品药品监督管理局(SFDA)批准,已在中国单独或与多种临床药物联合使用来治疗乙型肝炎,肺癌和肝癌等疾病[5]。……

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