ArticleInternational journal of nanomedicine2026
Development and Evaluation of Liposomal Nanobiotics for Combating Antibiotic Resistance Among Enterobacteriaceae.
Article in International journal of nanomedicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The increasing prevalence of antimicrobial-resistant bacteria, such as Methods: In this study, liposome-based nanocarriers encapsulating conventional antibiotics were developed, characterised and evaluated for their antibacterial efficacy and interactions with bacteria. The liposomal nanobiotics were prepared using the thin-film hydration method and loaded with antibiotics. Results: The prepared nanobiotics of tetracycline, chloramphenicol and nalidixic acid showed average particle size of 120-190 nm and entrapment ranging between 30% and 85% for the antibiotics used. Furthermore, the formulations exhibited minimal cytotoxic effects on HEK293 cells, indicating favourable biocompatibility. Compared to the free antibiotics the nanobiotics demonstrated significantly enhanced antibacterial activity against MDR isolates. The time kill curves showed significant reduction in viable bacterial count, while in vitro release profile showed sustained release of the encapsulated liposomes around 85% within 24 hours. The TEM analysis and PI/calceinAM assay demonstrated effective liposme-bacterial interaction and enhanced intracellular delivery of the encapsulated antibiotics. Further, the analysis of the efflux-pump associated genes showed impact of nanobiotic formulations on efflux pump gene expressions and suggests a role in mitigating the resistance mechanism. Also, antibiotics encapsulated in liposomes significantly reduced the bacterial load across all conditions in the food-spiking experiment with enhanced antibiotic delivery. Conclusion: The liposomal formulation of tetracycline, chloramphenicol and nalidixic acid showed better physicochemical properties, sustained release profile and increased antibacterial activity against MDR bacterial isolates compared to free drug. Overall findings suggest that encapsulation enhances the therapeutic potential of the conventional antibiotics and can be a promising strategy to overcome the multi-drug resistance in bacteria.
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