Ogugua Victor N, Okagu Innocent U, Onuh Onyekachi M, Uzoegwu Peter N
Department of Biochemistry, University of Nigeria, Nsukka, Enugu State, Nigeria.
J Vector Borne Dis. 2019 Apr-Jun;56(2):146-153. doi: 10.4103/0972-9062.263722.
BACKGROUND & OBJECTIVES: The alarming failure in malaria treatment using conventional drugs calls for urgent search of alternatives; one of which is to exploit natural products such as plants. This study evaluated the effects of three selected commercial herbal preparations on albino mice infected with Plasmodium berghei NK65, a lethal strain of rodent malaria.
This study was conducted in the University of Nigeria, Nsukka between February and September 2017. A total of 30 adult albino mice were randomized into six groups of five mice each. Group 1 served as normal control. Mice in Groups 2-6 were parasitized with P. berghei. Group 2 mice were untreated while mice in Groups 3, 4, 5 and 6 were treated with 20 mg/kg body weight of artesunate; and 5 ml/kg body weight of the seleceted commercial herbal preparations designated as HA, HB and HC, respectively. The percent malaria parasitaemia, haematological parameters, lipid profile, liver function markers, antioxidant status and lipid peroxidation index were evaluated using standard protocol.
It was observed that mice in Group 2 had significantly higher percentage of malaria parasitaemia when compared to mice in parasitized and treated groups. Also, haematological dysfunctions, dyslipidaemia, oxidative stress and hepatotoxicity seen in parasitized and untreated mice were restored in parasitized and artesunate- and herbal preparations-treated mice.
INTERPRETATION & CONCLUSION: Findings from the present study revealed that oxidative stress, characterized by low antioxidant status and high lipid peroxidation, contributes to complications in malaria. The results also indicate that the studied commercial herbal preparations possess good antimalarial and ameliorative effects on malaria-induced haematological, lipid, antioxidant and liver aberrations in mice. The acute toxicity profiles of the commercial herbal preparations suggested that they are tolerable and safe at the doses administered.
传统药物治疗疟疾的惊人失败促使人们迫切寻找替代方法;其中之一是开发天然产物,如植物。本研究评估了三种选定的商业草药制剂对感染伯氏疟原虫NK65(一种致死性啮齿类疟原虫菌株)的白化小鼠的影响。
本研究于2017年2月至9月在尼日利亚大学恩苏卡分校进行。总共30只成年白化小鼠被随机分为六组,每组五只。第1组作为正常对照。第2 - 6组的小鼠感染伯氏疟原虫。第2组小鼠未接受治疗,而第3、4、5和6组的小鼠分别用20 mg/kg体重的青蒿琥酯以及5 ml/kg体重的选定商业草药制剂(分别命名为HA、HB和HC)进行治疗。使用标准方案评估疟原虫血症百分比、血液学参数、血脂谱、肝功能指标、抗氧化状态和脂质过氧化指数。
观察到,与感染并接受治疗的组相比,第2组小鼠的疟原虫血症百分比显著更高。此外,感染且未接受治疗的小鼠出现的血液学功能障碍、血脂异常、氧化应激和肝毒性在感染并接受青蒿琥酯和草药制剂治疗的小鼠中得到恢复。
本研究结果表明,以低抗氧化状态和高脂质过氧化为特征的氧化应激会导致疟疾并发症。结果还表明,所研究的商业草药制剂对小鼠疟疾诱导的血液学、脂质、抗氧化和肝脏异常具有良好的抗疟和改善作用。商业草药制剂的急性毒性概况表明,在给药剂量下它们是可耐受且安全的。