Abstract
Aim: To synthesize silver nanoparticles (AgNPs) from Azadirachta indica leaf extract and determine its effect on membrane stability.
 Place and Duration of Study: Department of Biochemistry, Sokoto State University, Sokoto, Nigeria, between January 2021 and April 2021.
 Methodology: Simple characterization using uv-vis spectroscopy was conducted and the well-known method for osmotic fragility was employed.
 Results: Surface plasmon excitation for conversion of Ag+ to AgNPs was successfully achieved at 320 nm. The result revealed increase in membrane stability with 67.50 % for sickle erythrocyte (HbSS), 33.33 % for carrier erythrocyte (HbAS) and 23.33 % for normal erythrocyte (HbAA); thereby decreasing the erythrocyte lysis in the order of HbSS>HbAS>HbAA.
 Conclusion: AgNPs synthesized from A. indica reduces osmotic fragility and hence increases membrane stabilizing potential particularly against sickle erythrocyte.
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