Metwally Dina M, Alajmi Reem A, El-Khadragy Manal F, Al-Quraishy Saleh
Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
Department of Parasitology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt.
Front Vet Sci. 2021 Feb 4;7:620665. doi: 10.3389/fvets.2020.620665. eCollection 2020.
Malaria is an important health problem in subtropical and tropical areas around the world. Infection with protozoan parasites of the Plasmodium genus, which grow inside host erythrocytes, causes malaria and may lead to morbidity and mortality. Liver tissue plays an important role in the pathogenesis of malaria and is closely involved in parasitic pre-erythrocytic development. Numerous published studies have demonstrated that the liver is not only the source of Plasmodium parasites prior to erythrocytic growth but is also a primary immune effector toward the blood stage of the malaria life cycle. Despite efforts to improve antimalarial drugs and vaccines, that cause severe malaria are being detected increasingly frequently in endemic regions. In this study, (. ) leaf extract was employed to synthesize silver nanoparticles (Ag-NPs). This method is eco-friendly and represents a single-step technique for the biosynthetic process; therefore, it has attracted considerable attention. Accordingly, we biosynthesized Ag-NPs with extract of the leaf and examined the antimalarial activity of these nanoparticles in a murine model of malaria ( malaria). Forty mice were chosen and classified into four types: infected group, healthy control, pretreated mice infected after treatment with 50 mg/kg of leaf extract-biosynthesized Ag-NPs for two weeks, and post-treated mice infected before treatment with 50 mg/kg of leaf extract-biosynthesized Ag-NPs (administered daily for 7 d). In this study, both pre-treatment and post-treatment with Ag-NPs produced a substantial reduction in parasitemia relative to the infected group. We investigated the antiplasmodial and hepatoprotective effects of leaf extract-biosynthesized Ag-NPs on -induced inflammation and hepatic oxidative stress markers.
疟疾是全球亚热带和热带地区的一个重要健康问题。感染疟原虫属的原生动物寄生虫会引发疟疾,这些寄生虫在宿主红细胞内生长,可能导致发病和死亡。肝组织在疟疾发病机制中起重要作用,并且与寄生虫的红细胞前期发育密切相关。众多已发表的研究表明,肝脏不仅是疟原虫在红细胞内生长之前的来源,也是疟疾病毒生命周期血液阶段的主要免疫效应器。尽管人们努力改进抗疟药物和疫苗,但在流行地区,导致严重疟疾的情况却越来越频繁地被发现。在本研究中,(.)叶提取物被用于合成银纳米颗粒(Ag-NPs)。这种方法对环境友好,代表了生物合成过程的单步技术;因此,它引起了相当大的关注。相应地,我们用该叶提取物生物合成了Ag-NPs,并在间日疟(疟疾)小鼠模型中检测了这些纳米颗粒的抗疟活性。选择了40只小鼠并分为四类:感染组、健康对照组、用50mg/kg该叶提取物生物合成的Ag-NPs处理两周后感染的预处理小鼠,以及用50mg/kg该叶提取物生物合成的Ag-NPs(每日给药7天)处理前感染的后处理小鼠。在本研究中,相对于感染组,Ag-NPs的预处理和后处理均使疟原虫血症大幅降低。我们研究了该叶提取物生物合成的Ag-NPs对诱导的炎症和肝脏氧化应激标志物的抗疟和肝保护作用。