Comparative analysis of chemically and biologically synthesized iron oxide nanoparticles against Leishmania tropica
ul Ain, Q. A.; Islam, A.; Nadhman, A.
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The current study was carried out to compare the antileishmanial potential of the characterized chemically and plant mediated (Trigonella foenum-graecum) FeO-NPs (FeO-NPs) against L.tropica KWH23. The promastigotes and amastigotes mortality, ROS generation, and biocompatibility assessment were estimated in time-dose dependent manner by PDT. LED exposed bio-inspired FeO-NPs after 72 hours, express significant suppressive effects by exhibiting 50% inhibitory concentration (IC50) 0.001572{+/-}0.02g/ml and 0.011408{+/-}0.02g/ml for promastigotes and amastigotes, respectively. Leishmanial DNA damage and membrane integrity caused by FeO-NPs were owe to high production of reactive oxygen species (ROS). By applying different ROS scavengers (mannitol and sodium azide) hydroxyl radical and singlet oxygen were found as main moieties for cell death by giving quantum yield 0.15 and 0.28 through chemically and green synthesized FeO-NPs, respectively. The light exposed green synthesized nanoparticles were found biocompatible on human red blood cells (RBCs), by exhibiting LD50 value 2659g/mL. From these findings, it can be concluded that plant mediated FeO-NPs can be used as promising antiprotozoal agent.
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