Bayat Fatemeh, Motevalli Haghi Afsaneh, Nateghpour Mehdi, Rahimi-Esboei Bahman, Rahimi Foroushani Abbas, Amani Amir, Farivar Leila, Sayyad Talaee Zahra, Faryabi Aref
Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Department of Medical Parasitology and Mycology, School of Medicine, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran.
Iran J Parasitol. 2022 Jul-Sep;17(3):339-348. doi: 10.18502/ijpa.v17i3.10624.
Malaria parasites cause a tremendous burden of disease in both the tropics and subtropics areas. Growing of drugs resistance in parasites is one of the most threats to malaria control. The aim of study was to investigate the anti-malarial activity of nano-emodin isolated from on in mice to evaluate parasites inhibition rate using test.
The study was conducted in the School of Public Health, Tehran University of Medical Sciences, during 2020. Nano-emodin particles were prepared from and confirmed by Zeta Potential Analyzer, DLS and electron microscopy techniques. Mice were infected with and treated by emodin nano-particles. Parasitemia was evaluated in each group in comparison with control group. Toxicity test was done using twice the highest concentration of emodin extract on a separate group of mice and ED50 was calculated.
Emodin extract was significantly effective in all concentrations on D4 <0.05). The most effective on parasitemia was observed in 400 mg/kg of Liquid Nano-emodin and solid (non-Nano) emodin. ED50 for emodin extract was determined 220 mg/kg. Toxicity test showed no toxic effect on the subjects.
The emodin extract is safe, lack of side effects. So, it can be used for more and longer period of time and in higher doses. Emodin extract, either in form of liquid and nanoparticle or in a solid form, has the same therapeutic effect on in infected Balb/c mice.
疟原虫在热带和亚热带地区造成了巨大的疾病负担。疟原虫耐药性的增加是疟疾控制面临的最大威胁之一。本研究的目的是研究从[具体来源未明确]分离得到的纳米大黄素对小鼠体内疟原虫的抗疟活性,并使用[具体检测方法未明确]试验评估寄生虫抑制率。
该研究于2020年在德黑兰医科大学公共卫生学院进行。纳米大黄素颗粒由[具体制备原料未明确]制备,并通过zeta电位分析仪、动态光散射和电子显微镜技术进行确认。小鼠感染[具体疟原虫种类未明确]后用大黄素纳米颗粒进行治疗。与对照组相比,评估每组的疟原虫血症情况。使用大黄素提取物最高浓度的两倍对另一组小鼠进行毒性试验,并计算半数有效剂量(ED50)。
大黄素提取物在所有浓度下对第4天均有显著效果(P<0.05)。在400mg/kg的液体纳米大黄素和固体(非纳米)大黄素中观察到对疟原虫血症最有效的效果。大黄素提取物的ED50测定为220mg/kg。毒性试验表明对受试对象无毒性作用。
大黄素提取物是安全的,无副作用。因此,它可以更长时间、更高剂量地使用。大黄素提取物,无论是液体、纳米颗粒形式还是固体形式,对感染的Balb/c小鼠体内的[具体疟原虫种类未明确]具有相同的治疗效果。