The new ophthalmic formulation for infection control by combining collagen/gelatin/alginate biomaterial with liposomal chloramphenicol

Abstract

Eye drops are a conventional method of drug delivery to the eye, accounting for 90% of currently accessible ophthalmic formulations. The major problem with eye drop treatments is rapid pre-corneal drug loss. Furthermore, the need for frequent administration of eye drops can profoundly affect the quality of life of ophthalmological patients. In the current study, we developed a liposomal nanoparticle encapsulated with chloramphenicol mixed with biodegradable materials against ophthalmological disease. We first established a protocol for chloramphenicol (CAP) loaded into liposomal nanoparticle (LipoCAP). We also established the collagen/gelatin/sodium alginate (CGA) as the component of biodegradable polymers and calibrated the novel drug-releasing formulation. Finally, we combined LipoCAP with CGA to generate an 8-h degradable ophthalmic chloramphenicol gel, CGA-LipoCAP-8. CGA-LipoCAP-8 reached the effective working concentration in 75 min and prolonged the drug-releasing time for at least 12 h. In addition, CGA-LipoCAP-8 could stably and continuously inhibit E. coli proliferation. The inhibiting phenomenon was more pronounced over time. Furthermore, there were no significant toxicities observed when CGA-LipoCAP-8 co-cultured with ocular epithelial cells. In conclusion, CGA-LipoCAP-8 achieved effective CAP dose concentrations in a short time and sustained CAP release for a prolonged period. Our results provide an innovative concept in relation to novel drug-release formulations, with safety and efficiency supporting use in future treatments for ophthalmological diseases.