Abstract
The present work aimed to formulate Darunavir loaded lipid nanoemulsion to increase its oral bioavailability and enhance brain uptake. Various batches of lipid nanoemulsion of Darunavir were prepared by high pressure homogenization using soya bean oil, egg lecithin and Tween 80. The optimized batch DNE-3 had globule size of 109.5 nm, zeta potential of -41.1 mV, entrapment efficiency 93% and creaming volume 98%. The batch remained stable at 4 °C for 1 month with an insignificant change in globule size and zeta potential (P > 0.05). In-vivo pharmacokinetics male wistar rats indicated 223% bioavailability of Darunavir relative to drug suspension. Cmax of DNE-3 was twofold higher than suspension form. The organ biodistribution study indicated 2.65 fold higher brain uptake for DNE-3 than that for suspension. The higher bioavailability of Darunavir from nanoemulsion could lessen the dose related side effects. Moreover, high organ distribution results in passive uptake of Darunavir to HIV reservoir organs.
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