[1]Department of Pharmacology and Toxicology, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria;
[2]Department of Pharmacology and Toxicology, University of Nigeria, Nsukka, Enugu State, Nigeria;
[3]Evangelical Churches of West Africa Hospital （ECWA）, Egbe, Kogi State, Nigeria;
[4]Department of Pharmacognosy and Traditional Medicine, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria;
[5]Department of Parasitology, Veterinary Research Institute, Vom, Plateau State, Nigeria;
[6]Department of lndustrial Microbiology, Federal University of Technology, Owerri, Imo State, Nigeria;
[7]Department of Biochemistry, Nigerian Institute of Trypanosome Research, Vom, Plateau State, Nigeria;
