Current Nanomedicine - Volume 13, Issue 3, 2023

Nanotechnology involves the study of different materials on the nanometer scale, typically less than 100 nm in size. Nanomedicine is the creation of nanotechnology, a new science and technology area. Similarly, various nanomaterials, such as nanostructure, nanotubes, and nanoparticles, were also found to have significant applications in the human biological system at the molecular level to achieve healthcare advantage. Nanotechnology is rapidly expanding in the field of medicine with a special emphasis on ophthalmology. Nanotechnology advancements need to be translated into a new and exciting platform for diagnosis, treatment, and therapeutics for ocular disease. The application of nanotechnology in ocular disease and cancer, such as nanoparticle-based drug delivery system, drug development, gene therapy, and tissue engineering, helps overcome many ocular problems. In particular, one of the most important applications of the emerging nanoscience system is used in ocular cancer diagnosis and therapy with the help of carbon nanotubes, nanocrystals, nanowires, etc. Several approaches have been developed for treatment and therapy for ocular disease. Moreover, these tremendous approaches have been safely used and effective for a broad range of applications. In this study, the focus is to discuss recent findings and various constraints and summarize the applications of nanotechnology-mediated systems for treating various ocular diseases.

Chronic wounds and lesions have a severe impact on the socioeconomic status and compliance of patients all over the world. Diabetes-related chronic, non-healing lesions may necessitate amputation of the damaged limb or organ. These skin lesions are susceptible to microorganisms that cause infections that impede the healing process. Despite the advances in medication development and sophisticated formulations, treating persistent wound infections remains difficult. Electrospun antimicrobial wound dressings offer considerable potential for lowering the risk of infection and accelerating the healing of chronic wounds. Electrospinning is a cost-effective, reproducible, simple, and multifaceted technique for encapsulating hydrophobic and hydrophilic therapeutic molecules within polymeric carriers with wide-ranging applications. In this review, we have discussed extensively the recent advances in electrospun nanofiber formulation techniques for use as wound dressings, as well as the entrapment of various antibacterial biomolecules, such as synthetic antibiotics, phytoconstituents, and metal nanoparticles, which have been embedded into the electrospun nanofibers, highlighting bioactive antibacterial agents capable of enhancing wound healing. In addition, we focus on the challenges currently being faced in the area of biomedicine as well as the opportunities for electrospinning-based nanomaterials.

Background: Cancer of the skin is one of the most frequent kinds of cancer around the globe and has substantial consequences for both public health and the economy. Co-delivery of drugs using nanotechnology are attractive for the reason that they make it possible for the effective targeting of medications with minimal side effects. The aim of the review is to provide an overview on the management of skin cancer with co-delivery via nanocarriers. Methods: Using a number of different search engines, search of the published literature was conducted using specific key terms such as co-delivery, skin cancer, nanoparticles, liposomes, and ethosomes. The articles were screened on the basis of target purpose and author’s expertise. Results:Nanocarriers based co-delivery systems have been found to improve the pharmacokinetic profile of medications, which resulted in enhanced therapeutic effectiveness with reduction in dose and side effects. Lipid based systems and polymeric nanoparticles have been utilized to incorporate different drugs with different physicochemical characteristics for the management of skin cancer. Conclusion: The management of skin cancer may be significantly manageable with co-drug delivery approach by integration of nanotechnology. Polymeric nanoparticles, liposomes, ethosomes, nanostructured lipid carriers and polymeric micelles have shown the potential for skin cancer treatment.

As the blood-brain barrier (BBB) stops hazardous substances from entering the brain, creating treatment strategies to treat central nervous system (CNS) conditions is difficult. By circumventing the BBB, nanotechnology has emerged as a viable method for targeted medicine delivery to the brain. PEGylated nanoparticles (PEGNPs) have shown the ability to encapsulate a range of drugs and deliver them to the deepest regions of the brain. PEGNPs are a helpful tool in preclinical research for CNS diseases because of their extreme flexibility. Before PEGNPs can be employed in clinical practise, however, issues with their design and optimization for efficient brain targeting, as well as their long-term safety, must be resolved. Moreover, it is crucial to comprehend the basic principles of PEGNP trafficking through the BBB and how they affect CNS cells. Despite these difficulties, PEGNPs have the potential to completely alter the way CNS diseases are treated by allowing for precise medication delivery to the brain. This review emphasizes the potential and difficulties in using PEGNPs for brain targeting and describes current breakthroughs in PEGNP research for CNS diseases.

Aim: The aim of this study was to prepare gelatin-nanocurcumin/nanohydroxy apatite nanofibers and test the effect of nanohydroxyapatite and nanocurcumin on the tensile strength of gelatin nanofibers. Finding the ideal bone replacement material has long been the focus of research in the field of bone regeneration. This study also aimed to assess the effect of adding nanohydroxy-apatite and nanocurcumin on the tensile strength of gelatin nanofibers in order to propose an ideal nanofiberous scaffold for bone regeneration application. Methods: Gelatin-curcumin nanofibers were prepared using an electrospinning method with a ratio of 70% to 30% of gelatin and curcumin and 5% of hydroxyapatite. Results: Adding curcumin to the gelatin nanofiber structure increased its tensile strength in the wet state (21.03 ± 2.17 to 28.54 ± 0.59, p < 0.0001). Besides, adding nanohydroxyapatite to the structure of gelatin nanofibers increased its tensile strength in dry (30.31 ± 0.64 to 35.79 ± 1.13, p < 0.0001) and wet conditions (28.54 ± 0.59 to 34.46 ± 0.86, p = 0.0020). Conclusion: As adding curcumin and nanohydroxyapatite increased the tensile strength of gelatin nanofibers, it seems that these nanofibers can play a promising futuristic role in bone and dental tis-sue engineering. However, more in vitro, in vivo, and clinical studies are recommended to approve this finding.

Background: Gentamicin (GM) is an antibiotic frequently used to treat severe gramnegative infections. However, due to nephrotoxicity, its clinical application is restricted. Several lines of evidence indicate that free radicals are important mediators of gentamicin nephrotoxicity. Therefore, the purpose of this research was to examine the potential antioxidant therapeutic value of ZnO-chitosan nanoparticles on gentamicin-induced nephrotoxicity. Methods: Twenty-four rats were divided into four groups (6 rats/group). All groups except group 1 were injected with gentamicin (100 mg/kg body weight i.p.) for eight days. On day 9, rats of groups 1 and 2 were administrated distilled water, and those of groups 3 and 4 were administrated 1/10 and 1/20 LD50 of ZnO-CS-NPs continuously for 30 days. Results: Treatment with ZnO-CS NPs caused a significant decrease in urea, creatinine, uric acid, sodium, potassium, chloride, microalbumin, and malondialdehyde levels; this was accompanied by a significant increase in kidney glutathione reduced, nitric oxide, superoxide dismutase, glutathione S-transferase, and catalase. Conclusion: The findings of the current study revealed that ZnO-CS NP ameliorated kidney injury against gentamicin induced-acute kidney injury in rats by its antioxidant properties.