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Immuno-modulatory effects of methanolic extract of Ferula szowitsiana on isolated human Th1/Th2/Treg cytokines levels, and their genes expression and nitric oxide production
Cytokine ( IF 3.7 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.cyto.2020.155387
Vahid Reza Askari 1 , Azam Alavinezhad 2 , Vafa Baradaran Rahimi 3 , Seyyed Abdorrahim Rezaee 4 , Mohammad Hossein Boskabady 5
Affiliation  

BACKGROUND Anti-inflammatory and anti-oxidants activities of Ferula szowitsiana L. (F. szowitsiana) were shown in ancient texts and assayed by modern studies. However, immunomodulatory properties of the plant are poorly understood. METHODS The effects of F. szowitsiana extract (10, 40 and 160 µg/ml), dexamethasone and vehicle were investigated on nitric oxide (NO) level, cell proliferation, and cytokines (IL-4, IL10 and IFN-γ) expression at gene and protein levels in non-stimulated and phytohaemagglutinin-stimulated human lymphocytes (n = 15 in each group). RESULTS Cell proliferation, cytokines secretion, NO production and levels of genes expression were significantly inhibited but IFN-γ/IL-4 and IL-10/IL-4 ratios (T helper 1/Th2 and Treg/Th2 balances respectively) were increased by dexamethasone and all three concentrations of the extract compared to control group in stimulated lymphocytes (P < 0.001 for all cases). The effect of three concentrations of the extract in all experiments was significantly lower than dexamethasone (P < 0.001 for all cases). CONCLUSION The extract of F. szowitsiana concentration-dependently decreased NO level but increased Th1/Th2 and Treg/Th2 ratios toward Th1 and Treg. These results suggest the therapeutic potential of the plant's extract in inflammatory diseases with dominant Th2 polarization such as asthma or cancers.

中文翻译:

阿魏甲醇提取物对分离的人 Th1/Th2/Treg 细胞因子水平及其基因表达和一氧化氮产生的免疫调节作用

背景技术 Ferula szowitsiana L. (F. szowitsiana) 的抗炎和抗氧化活性在古代文献中得到证实,并通过现代研究进行了测定。然而,人们对植物的免疫调节特性知之甚少。方法 研究了 F. szowitsiana 提取物(10、40 和 160 µg/ml)、地塞米松和载体对一氧化氮(NO)水平、细胞增殖和细胞因子(IL-4、IL10 和 IFN-γ)表达的影响。非刺激和植物血凝素刺激的人淋巴细胞中的基因和蛋白质水平(每组 n = 15)。结果 细胞增殖、细胞因子分泌、NO 产生和基因表达水平受到显着抑制,但地塞米松和所有三种浓度的与对照组相比,在受刺激的淋巴细胞中提取物(所有病例 P < 0.001)。在所有实验中,三种浓度的提取物的效果均显着低于地塞米松(所有情况下 P < 0.001)。结论 F. szowitsiana 提取物浓度依赖性地降低 NO 水平,但增加 Th1/Th2 和 Treg/Th2 对 Th1 和 Treg 的比率。这些结果表明,该植物提取物在以 Th2 极化为主的炎症性疾病(如哮喘或癌症)中具有治疗潜力。在所有实验中,三种浓度的提取物的效果均显着低于地塞米松(所有情况下 P < 0.001)。结论 F. szowitsiana 提取物浓度依赖性地降低 NO 水平,但增加 Th1/Th2 和 Treg/Th2 对 Th1 和 Treg 的比率。这些结果表明,该植物提取物在以 Th2 极化为主的炎症性疾病(如哮喘或癌症)中具有治疗潜力。在所有实验中,三种浓度的提取物的效果均显着低于地塞米松(所有情况下 P < 0.001)。结论 F. szowitsiana 提取物浓度依赖性地降低 NO 水平,但增加 Th1/Th2 和 Treg/Th2 对 Th1 和 Treg 的比率。这些结果表明,该植物提取物在以 Th2 极化为主的炎症性疾病(如哮喘或癌症)中具有治疗潜力。
更新日期:2021-02-01
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