Nanostructured-lipid carriers-Chitosan hydrogel beads carrier system for loading of resveratrol: A new method of topical application

The aim of this study was to develop nanostructured-lipid carriers (NLC) encapsulated by Chitosan hydrogel beads for the efficient topical carrier. Dynamic light scattering (DLS), X-ray diffraction (XRD), Differential scanning calorimetry (DSC), and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) were conducted to study the influence of the encapsulation on the characteristic of resveratrol-loaded NLC, and the results showed that there was no impact on resveratrol-loaded NLC. Chitosan hydrogel beads could significantly improve the physical stability of resveratrol-loaded NLC. In vitro release study revealed that resveratrol-loaded NLC-Chitosan hydrogel beads had a more significant sustained-release effect on resveratrol. In vitro transdermal studies suggested that the skin permeation of resveratrol was promoted by the effect of Chitosan hydrogel beads and increased resveratrol distribution in the skin. In vitro cytotoxicity showed that resveratrol-loaded NLC-Chitosan hydrogel beads did not exert a hazardous effect on L929 cells. Hence, NLC-Chitosan hydrogel beads might be a promising method for topical applications of resveratrol.

Applications of lipid-based nanocarriers for parenteral drug delivery

This review describes the use of Lipid-based Nanocarriers (LNCs) for the parenteral delivery of pharmaceutical actives. Firstly, the two generation of LNCs such as ‘‘solid lipid nanoparticles’’ (SLNs) and ‘‘nanostructured lipid carriers’’ (NLCs) are explained in term of preparation, characterization and stability. Although the use of LNCs through parenteral administration has shown many benefits, their use is limited by opsonization, an immune process that causes their short half-life (3-5 min). Therefore, many strategies are discussed to realize “stealth” systems suitable for parenteral administration. Successfully, the requirements and applications of parenteral lipid nanoparticles are reviewed for the delivery of natural compounds, synthetic drugs and genetic materials. In the last period, the latter application has been a remarkable interest due to the numerous benefits of mRNA vaccines to fight the Covid-19 pandemic.

Nanostructured Lipid Carriers-Hydrogels System for Drug Delivery: Nanohybrid Technology Perspective

Advanced hybrid component development in nanotechnology provides superior functionality in the application of scientific knowledge for the drug delivery industry. The purpose of this paper is to review important nanohybrid perspectives in drug delivery between nanostructured lipid carriers (NLC) and hydrogel systems. The hybrid system may result in the enhancement of each component’s synergistic properties in the mechanical strength of the hydrogel and concomitantly decrease aggregation of the NLC. The significant progress in nanostructured lipid carriers–hydrogels is reviewed here, with an emphasis on their preparation, potential applications, advantages, and underlying issues associated with these exciting materials.

Application of Box Behnken Design and Response Surface Methodology for Optimization Sonication Conditions of Nanostructured Lipid Carrier from Mixtures of Palm Stearin and Palm Olein

The study aimed to determine the optimum conditions of the sonication in the manufacture of nanostructured lipid carriers (NLC). Nanostructured lipid carriers were developed using a mixture of palm stearin and palm olein, water, and tween as surfactants. Optimization was carried out to obtain nanostructured lipid carriers with a size below 200nm, zeta potential + 30 mV, and polydispersity index below 0.5. Optimization of NLC using response surface methodology and Box-Behnken experimental design. The independent variables were amplitude (A, kHz), pulse on pulse off (B, minute), and time of sonication (C, minute) each at three levels, while dependent variables were zeta potential (Y1, mV), particle size (Y2, nm), and polydispersity index (Y3). Measurement for dependent variables using the Zetasizer Nano ZS particle size analyzer utilized with Malvern software (Malvern, UK). The optimum formulation was obtained at a combination of amplitude (35 kHz), pulse on pulse off (pulse on 9 pulses off 3), and time of sonication (3 minutes 25 seconds ). This resulted in NLC having particle size 127.9 nm, polydispersity index 0.191, the zeta potential of -27.3 mV.

Novel Selectively Targeted Multifunctional Nanostructured Lipid Carriers for Prostate Cancer Treatment

Prostate cancer (PC) is the most common cancer in men over 50 and the 4th most prevalent human malignancy. PC treatment may include surgery, androgen deprivation therapy, chemotherapy, and radiation therapy. However, the therapeutic efficacy of systemic chemotherapy is limited due to low drug solubility and insufficient tumor specificity, inflicting toxic side effects and frequently provoking the emergence of drug resistance. Towards the efficacious treatment of PC, we herein developed novel selectively PC-targeted nanoparticles (NPs) harboring a cytotoxic drug cargo. This delivery system is based upon PEGylated nanostructured lipid carriers (NLCs), decorated with a selective ligand, targeted to prostate-specific membrane antigen (PSMA). NPs loaded with cabazitaxel (CTX) displayed a remarkable loading capacity of 168 ± 3 mg drug/g SA-PEG, encapsulation efficiency of 67 ± 1%, and an average diameter of 159 ± 3 nm. The time-course of in vitro drug release from NPs revealed a substantial drug retention profile compared to the unencapsulated drug. These NPs were selectively internalized into target PC cells overexpressing PSMA, and displayed a dose-dependent growth inhibition compared to cells devoid of the PSMA receptor. Remarkably, these targeted NPs exhibited growth-inhibitory activity at pM CTX concentrations, being markedly more potent than the free drug. This selectively targeted nano-delivery platform bears the promise of enhanced efficacy and minimal untoward toxicity.