Mixed dry reverse micelles: potential carriers for oral protein delivery via SEDDS.

The aim of this study was to evaluate the potential of mixed dry reverse micelles (dRMs) to increase the lipophilicity of therapeutic proteins and allow their incorporation into self-emulsifying drug delivery systems (SEDDS). Horseradish peroxidase (HRP) was incorporated in mixed dRMs, forming HRP-dRMs, using soybean phosphatidylcholine (SPC) and sodium docusate (SD) as surfactants. HRP-dRMs were characterized with respect to their distribution coefficient and stability in simulated physiological fluids.

Unveiling the potential of biomaterials and their synergistic fusion in tissue engineering.

Inspired by nature, tissue engineering aims to employ intricate mechanisms for advanced clinical interventions, unlocking inherent biological potential and propelling medical breakthroughs. Therefore, medical, and pharmaceutical fields are growing interest in tissue and organ replacement, repair, and regeneration by this technology. Three primary mechanisms are currently used in tissue engineering: transplantation of cells (I), injection of growth factors (II) and cellular seeding in scaffolds (III).

Phosphatase-degradable nanoparticles providing sustained drug release.

Aim: The study aimed to develop enzyme-degradable nanoparticles comprising polyphosphates and metal cations providing sustained release of the antibacterial drug ethacridine (ETH).

Methods: Calcium polyphosphate (Ca-PP), zinc polyphosphate (Zn-PP) and iron polyphosphate nanoparticles (Fe-PP NPs) were prepared by co-precipitation of sodium polyphosphate with cations and ETH. Developed nanocarriers were characterized regarding particle size, PDI, zeta potential, encapsulation efficiency and drug loading.

Preparation and Evaluation of Charge Reversal Solid Lipid Nanoparticles.

The aim of this study was to design and investigate solid lipid nanoparticles (SLN) providing an intestinal alkaline phosphatase (IAP) triggered charge reversion. SLN containing the monophosphate ester bearing surfactant P-PEG-9-lauryl ether and the cationic surfactant benzalkonium chloride were prepared via step-wise hot microemulsion method enabling P-PEG-9-lauryl ether to accumulate the phosphate moiety on the surface of the particles accessible for IAP. Charge reversal SLN were characterized in vitro and ex vivo.

Spray-dried mucoadhesive microparticles based on S-protected thiolated hydroxypropyl-β-cyclodextrin for budesonide nasal delivery.

Budesonide (BUD) is used as first choice therapy for the treatment of allergic rhinitis, a chronic allergic-immune condition with an increased incidence in the pediatric population. The main problem of BUD nasal formulations is related to its poor aqueous solubility (S = 5.03·10 M), sometimes compensated by the administration of high doses of the drug.

Thiolated polymeric hydrogels for biomedical application: Cross-linking mechanisms.

This review focuses on the synthesis of hydrogel networks using thiomers such as thiolated hyaluronic acid, chitosan, cyclodextrin, poly(ethylene glycol) and dextran that are cross-linked via their thiol substructures. Thiomers have been widely investigated as matrix of hydrogels due to the high reactivity of these sulfhydryl moieties. They are well known for their in situ gelling properties due to the formation of inter- and intra-chain disulfide bonds.