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Preshita Desai

Preshita Desai

Institute of Chemical Technology, India.

Title: t-Micelles of curcumin: strategy for enhanced brain uptake
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Biography

Biography: Preshita Desai

Abstract

Curcumin -a polyphenol, exhibits strong anti-oxidant, neuroprotective and anti-amyloid potential that makes it a potent candidate for alleviation of oxidative stress induced neurodegenerative ailments viz. Alzheimer’s disease. Though potent, its clinical translation is restricted due to poor aqueous solubility (~11ng/ml in pH5 aqueous buffer), chemical instability and meager permeability across brain barrier. This demands a smart nanodelivery platform that will not only ensure the drug stability but will also facilitate drug transport across brain barrier. With this rationale, we propose curcumin loaded targeted micellar nanocarriers (t-micelles) comprising a novel lipid bioconjugate (t-bioconjugate) with an ability to cross brain barrier via receptor mediated active transport. The synthesized t-bioconjugate was characterized for its physicochemical properties, safety and brain permeation efficacy both in vitro and in vivo. The curcumin loaded t-micelles exhibited a spherical geometry (size:21.3±2.68 nm, PDI:0.148) and demonstrated safety and acceptable properties for nasal spray application. In vitro anti-oxidant assay revealed 1.6 fold better anti-oxidant activity (DPPH assay) of curcumin loaded t-micelles in contrast to curcumin loaded plain micelles and could be attributed to mild antioxidant potential of t-bioconjugate. In vivo pharmacokinetic and biodistribution studies demonstrated enhanced brain transport of t-micelles via active transport and curcumin was quantified in brain tissue upto 12 hours predominantly in the olfactory region, hippocampus and cerebellum of the brain. The developed formulation was stable as per ICH stability guidelines. The studies corroborated the potential of t-micelles as a platform and potential strategy in treatment of neural ailments to enhance brain bioavailability of therapeutic actives.

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