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Effects of astilbic acid on airway hyperresponsiveness and inflammation in a mouse model of allergic asthma.

机译:抗坏血酸对过敏性哮喘小鼠模型中气道高反应性和炎症的影响。

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摘要

Bronchial asthma is characterized by chronic lung inflammation, airway hyperresponsiveness (AHR), and airway remodeling. Astilbic acid, extracted from the medicinal herb Astilbe chinensis, is used as a headache remedy in traditional medicine and has anti-pyretic and analgesic effects. However, the effect of astilbic acid on asthma remains to be established. In the present study, we therefore examined the effect of astilbic acid in a mouse model in which asthma was established by sensitization and challenge with ovalbumin (OVA). Astilbic acid inhibited OVA-induced AHR to inhaled methacholine and significantly suppressed the levels of T-helper 2-type cytokines (including IL [interleukin]-4, IL-5, and IL-13) and inflammatory cells (including eosinophils) in bronchoalveolar lavage (BAL) fluid. Histochemical analysis revealed reduced goblet cell hyperplasia and mucus production, as well as attenuated eosinophil-rich leukocyte infiltration, in the astilbic acid-treated group, compared with OVA-challenged mice. Moreover, the compound significantly inhibited synthesis of IL-4-, IL-5-, IL-13-, IL-17-, and eotaxin-encoding mRNA following asthma induction in lung tissue, in addition to suppressing the immunoglobulin E (IgE) response to asthma in both BAL fluid and serum. Our results indicate that astilbic acid has great potential as a therapeutic candidate for the treatment of asthma.
机译:支气管哮喘的特征在于慢性肺部炎症,气道高反应性(AHR)和气道重塑。从草药白术中提取的抗坏血酸被用作传统医学中的头痛药,并具有解热镇痛作用。然而,抗坏血酸对哮喘的作用仍有待确定。因此,在本研究中,我们因此研究了在小鼠模型中通过小鼠卵清蛋白(OVA)的致敏和激发建立哮喘后,抗坏血酸的作用。抗坏血酸抑制OVA诱导的AHR吸入乙酰甲胆碱,并显着抑制支气管肺泡中T辅助2型细胞因子(包括IL [白介素] -4,IL-5和IL-13)和炎症细胞(包括嗜酸性粒细胞)的水平灌洗液(BAL)。组织化学分析显示,与OVA攻击的小鼠相比,抗坏血酸处理组的杯状细胞增生和粘液产生减少,以及富嗜酸性粒细胞的白细胞浸润减弱。此外,该化合物除了抑制免疫球蛋白E(IgE)外,还显着抑制了哮喘诱导肺组织后IL-4-,IL-5-,IL-13,IL-17-和嗜酸性粒细胞趋化因子编码的mRNA的合成。 BAL液和血清对哮喘的反应。我们的结果表明,抗坏血酸作为治疗哮喘的候选药物具有巨大潜力。

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