黄芩-白芍药对改善小鼠溃疡性结肠炎的作用及机制研究
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篇名: 黄芩-白芍药对改善小鼠溃疡性结肠炎的作用及机制研究
TITLE:
摘要: 目的:研究黄芩-白芍药对改善小鼠溃疡性结肠炎(UC)的作用及机制。方法:将70只小鼠随机分为空白组、模型组、黄芩组(1.5 g/kg)、白芍组(1.5 g/kg)和黄芩-白芍(2 ∶ 1、1 ∶ 1、1 ∶ 2,m/m)组(黄芩和白芍总量为1.5 g/kg),每组10只。除空白组外,其余各组小鼠均复制UC模型。造模结束后次日,各给药组小鼠均按0.2 mL/10 g灌胃相应药液(以生药计质量浓度均为 75 mg/mL),空白组和模型组小鼠灌胃等体积生理盐水,每日1次,连续7 d。给药结束后,对小鼠疾病活动指数进行评分,测定各组小鼠血清中肿瘤坏死因子α(TNF-α)、白细胞介素1β(IL-1β)、IL-6、D-乳酸(D-LA)及二胺氧化酶(DAO)水平,测量小鼠结肠长度并计算肠质量指数,测定结肠组织中髓过氧化物酶(MPO)、超氧化物歧化酶(SOD)活性和一氧化氮(NO)、丙二醛(MDA)水平。结果:与空白组比较,模型组小鼠疾病活动指数评分以及血清中TNF-α、IL-1β、IL-6、D-LA、DAO水平和结肠组织中MPO、NO、MDA水平显著升高,结肠长度、肠质量指数和结肠组织中SOD水平显著降低,差异均有统计学意义(P<0.05或P<0.01)。与模型组比较,黄芩组小鼠疾病活动指数评分和血清中TNF-α、IL-1β、DAO水平以及结肠组织中MDA水平显著降低(P<0.05或P<0.01);白芍组小鼠血清中TNF-α、IL-1β水平和结肠组织中MDA水平显著降低(P<0.05或P<0.01);黄芩-白芍(2 ∶ 1)组小鼠除结肠长度外的其余各指标均显著改善(P<0.05或P<0.01);黄芩-白芍(1 ∶ 1)组小鼠除血清中IL-6水平和结肠组织中SOD水平外的其余各指标均显著改善(P<0.05或P<0.01);黄芩-白芍(1 ∶ 2)组小鼠除血清中NO水平外的其余各指标均显著改善(P<0.05或P<0.01)。结论:黄芩-白芍药对可通过降低促炎因子的表达,增加机体抗氧化作用,降低肠道黏膜通透性,从而改善小鼠的UC症状,且以黄芩-白芍(2 ∶ 1)组效果最佳。
ABSTRACT: OBJECTIVE: To study the effects and mechanism of couplet medicines of Scutellaria baicalensis-Paeonia lactiflora on improving ulcerative colitis (UC) in mice. METHODS: A total of 70 mice were randomly divided into blank group, model group, S. baicalensis group (1.5 g/kg), P. lactiflora group (1.5 g/kg), S. baicalensis-P. lactiflora (2 ∶ 1, 1 ∶ 1, 1 ∶ 2, m/m) groups (total amount of 1.5 g/kg), with 10 mice in each group. Except for blank group, UC model of mice was induced in each group. The next day after modeling, treatment groups were given relevant medicine liquid 0.2 mL/10 g (75 mg/mL, calculated by crude drug mass concentration), while blank group and model group were given constant volume of normal saline intragastrically, once a day, for consecutive 7 d. After administration, disease activity indexes (DAI) of rats were scored, and the serum levels of TNF-α, IL-1β, IL-6, D-LA and myeloperoxidase (DAO) were determined. The length of the colon was measured and the intestinal mass index was calculated in mice. The activities of medullary peroxide (MPO) and SOD, the levels of NO and MDA were determined in colon tissue. RESULTS: Compared with blank group, DAI score, serum levels of TNF-α, IL-1β, IL-6, D-LA and DAO, the levels of MPO, NO and MDA in colon were increased significantly in model group, while the length of colon, intestinal mass index and SOD level of colon tissue were decreased significantly, with statistical significance (P<0.05 or P<0.01). Compared with model group, DAI score, serum levels of TNF-α, IL-1β and DAO, the level of MDA in colon were decreased significantly in S. baicalensis group (P<0.05 or P<0.01). The serum levels of TNF-α and IL-1β, the level of MDA in colon were decreased significantly in P. lactiflora group (P<0.05 or P<0.01). Above indexes of S. baicalensis-P. lactiflora (2 ∶ 1) group were improved significantly except for the length of colon (P<0.05 or P<0.01). Above indexes of S. baicalensis-P. lactiflora (1 ∶ 1) group were improved significantly except for serum level of IL-6 and the level of SOD in colon (P<0.05 or P<0.01). Above indexes of S. baicalensis-P. lactiflora (1 ∶ 2) group were improved significantly except for serum level of NO (P<0.05 or P<0.01). CONCLUSIONS: The couplet medicines of S. baicalensis-P. lactiflora can reduce the expression of proinflammatory factors, enhancing antioxidant activity of the body and decrease intestinal mucosal permeability so as to improve UC symptom of mice; and the effect of S. baicalensis-P. lactiflora (2 ∶ 1) group is the best.
期刊: 2018年第29卷第3期
作者: 刘岩,李连泰,计小清,赵印涛,辛思源,邓秀敏,张梦娇,张英俊
AUTHORS: LIU Yan,LI Liantai,JI Xiaoqing,ZHAO Yintao,XIN Siyuan,DENG Xiumin,ZHANG Mengjiao,ZHANG Yingjun
关键字: 黄芩;白芍;配比;溃疡性结肠炎;作用机制;小鼠
KEYWORDS: Scutellaria baicalensis; Paeonia lactiflora; Compatibility proportion; Ulcerative colitis; Effect mechanism; Mice
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