Erectile dysfunction (ED) is a growing health condition that needs safe and effective therapy. One of the main common treatments is sildenafil which is used in clinics for managing erectile dysfunction by enhancing the blood supply to the penis. In the current study, sildenafil was formulated as nanofibers and mixed with the root extract of Glycyrrhiza glabra (glycyrrhizin) as a natural sweetener to be administrated in the buccal cavity for enhanced drug bioavailability, rapid drug absorption and improved patient compliance. The formulated dual-loaded nanofibers were evaluated by measuring diameter, disintegration, drug loading efficiency, drug release profile, and in vitro cell viability assessment. The results showed that the sildenafil/glycyrrhizin-loaded fibers had a diameter of 0.719 ± 0.177 μm and lacked any beads and pores formation on their surfaces. The drug loading and encapsulation efficiency for sildenafil were measured as 52 ± 7 µg/mg and 67 ± 9 %, respectively, while they were 290 ± 32 μg/mg and 94 ± 10 %, respectively, for glycyrrhizin. The release rate of sildenafil and glycyrrhizin demonstrated a burst release in the first minute, followed by a gradual increment until a complete release after 120 min. The in vitro cell viability evaluation exhibited that the application of sildenafil and glycyrrhizin is safe upon 24-hour treatment on human skin fibroblast cells at all used concentrations (i.e., ≤ 1,000 and 4,000 μg/mL, respectively). However, the application of sildenafil-glycyrrhizin combination (in a ratio of 1:4) demonstrated more than 80 % cell viability at concentrations of ≤ 250 and 1000 μg/mL, respectively, following 24-hour cell exposure. Therefore, sildenafil/glycyrrhizin dual-loaded PVP nanofibers showed a potential buccal therapeutic approach for erectile dysfunction management.

Pulmonary drug delivery has become a vital route for both local and systemic treatments because of the unique structure and function of the respiratory system. Unlike oral and injectable dosage forms, inhalation offers a non-invasive, direct route to deliver medicines to the lungs, bypassing gastric degradation and first-pass hepatic metabolism. Common forms such as aerosols, solutions, suspensions, and dry powders are frequently used to treat respiratory diseases like asthma and chronic obstructive pulmonary disease (COPD). However, their effectiveness is often limited by physiological and biopharmaceutical barriers, such as mucociliary clearance, enzymatic degradation, and nonspecific deposition, which reduce drug retention and bioavailability. These issues are especially critical for poorly soluble or sensitive molecules, leading to lower drug concentrations at the target site and necessitating frequent dosing. To address these challenges, advanced nanoparticle-based delivery systems are being developed to improve drug stability, targeting, and controlled release within the lungs. At the same time, computational methods, including deposition modeling, physiologically based pharmacokinetic (PBPK) simulations, and AI-driven optimization, are increasingly used in formulation development to predict in vivo performance and boost translational success. This review covers the physiological and biological barriers to pulmonary drug delivery, explores major inhalation routes and dosage forms, and discusses new therapeutic strategies and nanoparticle platforms. It also highlights the growing role of in silico modeling and AI in accelerating the design and optimization of pulmonary treatments, while addressing current challenges, limitations, and regulatory issues in translating pulmonary nanomedicine into clinical practice.

Antibiotic resistance poses a growing threat to public health, yet limited innovation and development of new antibacterial agents continue to hinder antibiotic discovery. Although only a few novel antibiotic candidates have passed clinical trials and reached the market, resistance continues to grow faster than antibiotic development. Despite numerous advances in drug development, using these technologies in isolation has constrained antibiotic discovery. This review examines how advanced technologies integrate into antibiotic drug discovery. It highlights a coupled approach (co-applied technologies) as an innovative strategy to mitigate the limitations of single approaches and accelerate lead discovery. By highlighting each technology and reviewing its potential applications, this strategy opens new routes and methods that can yield novel chemical scaffolds and new mechanisms of action (i.e., weakening microbial resistance), addressing the challenges posed by increasing global resistance and shortcomings in current antibiotic development. The review also addresses the challenges and barriers to discovering next-generation antibiotics. It also encourages researchers to implement platforms that combine coupled approaches and technologies, such as computational, genomic, biochemical, and structural tools, to replenish the next-generation antibiotic discovery pipeline and address the antimicrobial resistance (AMR) crisis. To strengthen global efforts and lessen the AMR crisis, an innovative antibiotic discovery strategy is necessary.