IngentaConnect Lipid Formulation as a Drug Carrier for Drug Delivery

Abstract:

In recent years, a Drug Delivery System (DDS), a preparative approach attracts the attention in the development of new drugs. DDS focuses on the regulation of the in vivo dynamics, such as absorption, distribution, metabolism, and elimination, thereby improving the effectiveness and the safety of the drugs by an applicable use of drug preparation technologies. A conventional intravenous dosage form of Amphotericin B (AmB), Fungizone, is the most effective clinically available for treating fungal infections. However, the clinical efficacy of AmB is limited by its adverse effects. Several lipid formulations, such as Liposomal AmB (L-AmB), AmB lipid complex (ABLC), and AmB colloidal dispersion (ABCD), with reduced side effects have been developed. These formulations are reported to have excellent safety and efficacy. However, comparable efficacy can be achieved only when they are administered at high doses than AmB. One of the problems of using these formulations is that they are easily taken up by the reticuloendothelial system (RES). An artificial lipoprotein-like particles, a novel drug carrier Lipid Nano-Sphere (LNS), which is 25 - 50 nm in size and is composed of phospholipids and simple lipid. LNS show a higher plasma concentration of drugs and lower uptake by RES-tissue different forms other lipid base drug carriers. In vitro and in vivo, LNS incorporating AmB, NS-718, shows reduced toxicity, while maintaining activity against fungi. LNS have a unique characteristic as an effective carrier of AmB for treatment of fungal infection.

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