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1.
Bioconjug Chem ; 35(6): 766-779, 2024 Jun 19.
Article in English | MEDLINE | ID: mdl-38625106

ABSTRACT

Addressing the complex challenge of healing of bacterially infected wounds, this study explores the potential of lipid nanomaterials, particularly advanced ultradeformable particles (UDPs), to actively influence the wound microenvironment. The research introduces a novel therapeutic approach utilizing silver sulfadiazine (SSD) coupled with vitamin E (VE) delivered through UDPs (ethosomes/transferosomes/transethosomes). Comparative physicochemical characterization of these nanosized drug carriers reveals the superior stability of transethosomes, boasting a zeta potential of -36.5 mV. This method demonstrates reduced side effects compared to conventional therapies, with almost 90% SSD and 72% VE release achieved in wound pH in a sustained manner. Cytotoxicity assessment shows 60% cell viability even at the highest concentration (175 µg/mL), while hemolysis test demonstrates RBC lysis below 5% at a concentration of 250 µg/mL. Vitamin E-SSD-loaded transethosomes (VSTEs) significantly enhance cellular migration and proliferation, achieving 95% closure within 24 h, underscoring their promising efficacy. The synergistic method effectively reduces bacterial burden, evidenced by an 80% reduction in Escherichia coli and Staphylococcus aureus within the wound microenvironment. This approach offers a promising strategy to address complications associated with skin injuries.


Subject(s)
Drug Carriers , Escherichia coli , Staphylococcus aureus , Vitamin E , Vitamin E/chemistry , Drug Carriers/chemistry , Humans , Staphylococcus aureus/drug effects , Escherichia coli/drug effects , Anti-Bacterial Agents/pharmacology , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/therapeutic use , Anti-Bacterial Agents/administration & dosage , Silver Sulfadiazine/pharmacology , Silver Sulfadiazine/chemistry , Silver Sulfadiazine/therapeutic use , Silver Sulfadiazine/administration & dosage , Wound Healing/drug effects , Wound Infection/drug therapy , Wound Infection/microbiology , Animals , Drug Delivery Systems , Cell Survival/drug effects
2.
Int J Biol Macromol ; 268(Pt 1): 131511, 2024 May.
Article in English | MEDLINE | ID: mdl-38615867

ABSTRACT

This comprehensive review delves into the intricate landscape of glycans and glycoconjugates, unraveling their multifaceted roles across diverse biological dimensions. From influencing fundamental cellular processes such as signaling, recognition, and adhesion to exerting profound effects at the molecular and genetic levels, these complex carbohydrate structures emerge as linchpins in cellular functions and interactions. The structural diversity of glycoconjugates, which can be specifically classified into glycoproteins, glycolipids, and proteoglycans, underscores their importance in shaping the architecture of cells. Beyond their structural roles, these molecules also play key functions in facilitating cellular communication and modulating recognition mechanisms. Further, glycans and glycoconjugates prove invaluable as biomarkers in disease diagnostics, particularly in cancer, where aberrant glycosylation patterns offer critical diagnostic cues. Furthermore, the review explores their promising therapeutic applications, ranging from the development of glycan-based nanomaterials for precise drug delivery to innovative interventions in cancer treatment. This review endeavors to comprehensively explore the intricate functions of glycans and glycoconjugates, with the primary goal of offering valuable insights into their extensive implications in both health and disease. Encompassing a broad spectrum of biological processes, the focus of the review aims to provide a comprehensive understanding of the significant roles played by glycans and glycoconjugates.


Subject(s)
Glycoconjugates , Polysaccharides , Humans , Polysaccharides/chemistry , Polysaccharides/metabolism , Glycoconjugates/chemistry , Glycoconjugates/metabolism , Animals , Neoplasms/metabolism , Glycosylation , Glycoproteins/chemistry , Glycoproteins/metabolism
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