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Dose-Dependent Effects of Different Humic Substances in Preclinical Test Systems

机译:不同腐殖质在临床前测试系统中的剂量依赖性影响

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With the aim of developing humic preparations for medical use, we investigated two naturally occurring and three synthetic humic substances (HS) for their effects on inflammation, spontaneous contractile activity (SCA) of smooth muscles, and the reaction time of blood coagulation. The results indicate that low concentrations (1-10 μg/mL) of HS enhanced the SCA of smooth muscle strips from guinea pigs by stimulating alpha(2)-adrenoceptors and dopamine D2 receptors, intermediate HS concentrations (10-250 μg/mL) reduced the release of tumor necrosis factor-alpha (TNF-α), and high HS concentrations (250-1,000 μg/ mL) acted as anticoagulants. A few humic samples were found to exhibit bimodal dose-response curves that will have to be further investigated.
机译:旨在为医疗用途开发腐殖质制剂,我们研究了两种天然存在的和三种合成的腐殖质物质(HS)对它们对平滑肌的炎症,自发收缩活动(SCA)以及血液凝固的反应时间。 结果表明,通过刺激α(2) - Renceptor和多巴胺D2受体,中间HS浓度(10-250μg/ ml),低浓度(1-10μg/ ml)Hs增强了来自豚鼠的平滑肌条的SCA。(10-250μg/ ml) 减少肿瘤坏死因子-α(TNF-α)的释放,高HS浓度(250-1,000μg/ ml)作用为抗凝血剂。 发现一些腐殖样样品表现出具有必须进一步研究的双峰剂量 - 反应曲线。

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