Inhibition of Plasmodium berghei growth by alkaloid extract of Phyllanthus amarus in mice increased haem level and stabilized erythrocyte membrane
Keywords:
Plasmodium berghei, alkaloid extract, erythrocyte membraneAbstract
Objectives: The Plasmodium parasite is known for its ability to destabilize the red cell membrane causing the release of free haem which is converted to haemozoin as haem is toxic to parasite. In combination with other factors, accumulation of haemozoin is associated with anaemia which manifest in severe malaria. Compounds directed at preventing erythrocyte attack and increasing haem concentrations could serve as new sources of antimalarials. Therefore, this study assessed the ability of Phyllanthus (P.) amarus alkaloid extract, a phytochemical, already reported to possess antimalarial activity, in reducing erythrocyte deformity and preventing parasite multiplication by increasing haem concentrations. Methods: The study involved measurement of parasite clearance, changes in haematological indices and degree of erythrocyte membrane stabilization (using heat-induced and hypotonic-solution induced destabilization assays) in Plasmodium (P.) berghei infected mice treated with alkaloid extract of P. amarus using documented methods. Results: Infection of experimental mice with Plasmodium berghei, induced malaria with evidence of anaemia (reduced PCV and Hb), reduction in haematological indices (RBC, WBC, platelets, lymphocytes, and eosinophil), increased serum haemozoin and haem concentration and destabilization of erythrocyte membrane.
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