Recent advances in drug delivery and formulation最新文献

Background: Films used for wound healing have many advantages, but should be flexible, robust, adherable and prevent maceration. Both Chitosan (CS) and Titanium dioxide nanopowder (TiO2 NP) have good properties to accelerate wound healing and can be used in preparing films.

Objective: CS and TiO2 NP are combined to formulate films for wound healing. The physical, thermal, chemical, and mechanical characteristics of these films are to be assessed. The antibacterial activity of the films and their performance on wounded rats will be explored.

Methods: Films made of CS and TiO2 NP were characterized by FTIR, TGA, DSC, XRD, and SEM. The films' mechanical characteristics and antimicrobial activity were tested. Films with acceptable mechanical properties were evaluated on rats.

Results: Generally, CS-TiO2 films had higher weight and thickness but lowered flexibility compared to films prepared using CS only. The chosen film showed excellent folding endurance with weight and thickness of around 21.98 mg and 0.16 mm. The surface pH for CS-TiO2 films was acidic, and for the selected film, it was 5.18. CS-TiO2 film was active against all studied bacteria and significantly higher than CS films. The antimicrobial activity of Gram-negative bacteria (P. aeruginosa and E. coli) was higher than that of Gram-positive bacteria (S. aureus). Finally, adding TiO2 NP to the films accelerated the healing process of the created wounds in a murine model, compared to control and CS-treated groups.

Conclusion: Films of TiO2 NP and CS have suitable properties to be used in wound healing and can be further used in the future to load drugs.

Background: In pediatrics, developing new pharmaceutical forms that offer safety and efficacy is crucial to improve pediatric pharmaceutical care. Orodispersible tablets do not require swallowing because orodispersible tablets dissolve quickly in the mouth, reducing the risk of choking and making medication administration safer and more straightforward. There is no solid dosage form in the pharmaceutical market offering a unit dose of Levothyroxine for pediatric hypothyroidism patients.

Objective: The objective of this study is to design and develop Orodispersible mini tablets of Levothyroxine Sodium (LT4 ODMTs) for pediatric doses.

Methods: LT4 ODMTs were prepared by direct compression with 10 and 15 μg, respectively, using StarLac® and Disolcel® as excipients. United States Pharmacopeia (USP-43) guidelines evaluated and determined pre-compression properties and quality control parameters.

Results: The LT4 ODMTs met the specified limits for quality controls. The Drug Content Uniformity was 97%, Hardness was less than 2.5 N, Friability was less than 0.3%, Disintegration time was less than 25 s, and dissolution profiles (Q 80% > 45 s) followed the USP requirements. Additionally, stability and microbiology assays were realized.

Conclusion: These formulations are optimal for developing new LT4 ODMTs suitable for treating pediatric hypothyroidism.

Treatment modalities of various cancers and the delivery strategies of anticancer agents have evolved significantly in the recent past. The severity and fatality of the disease and hurdles to the effective delivery of therapeutic agents have drawn the attention of researchers across the world for proposing novel and effective drug delivery strategies for anticancer therapeutics. Attempts have been made to propose solutions to the diverse limitations like poor pharmacokinetics and higher systemic toxicities of the traditional delivery of anticancer agents. Nanotechnology-based drug delivery systems including lipid-based nanocarriers have demonstrated significant efficiency in this scenario. The review critically assessed the different types of lipid nanocarrier systems for the effective and optimal delivery of anticancer therapeutic agents. The diverse synthesis approaches are discussed for the laboratory scale and commercial development of different categories of lipid nanocarriers. Further, their application in anticancer drug delivery is illustrated in detail followed by a critical appraisal of their safety and toxicity.