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Antimicrobial and anti-SARS-CoV-2 activities of smart daclatasvir-chitosan/gelatin nanoparticles-in-PLLA nanofibers medical textiles; in vitro, and in vivo study.
International Journal of Biological Macromolecules 2023 October 13
This study aims at the development of electrospun polylactic acid nanofibers (PLLA NFs) incorporating smart daclatasvir-loaded chitosan gelatin nanoparticles to be used as medical textiles. First, smart nanoparticles were prepared through ionic gelation and optimized using Design Expert® software where daclatasvir (DAC), chitosan (CS), and gelatin (GL) amounts were selected to be the independent variables. DAC was used owing to its reported Anti-SARS-CoV-2 activity, CS was chosen due to its antimicrobial activity and GL was used owing to its sensitivity to be hydrolyzed upon exposure to Papain-like protease enzyme (PLpro). The optimum DAC-CS/TAN NPs possessed 109 nm size and 94.44 % entrapment efficiency in addition to sustained drug release for 14 days. Furthermore, upon exposure to PLpro, smart DAC-CS/GL NPs released the whole DAC amount within 3 h. Then, DAC-CS/GL NPs were incorporated within PLLA NFs through electrospinning. Swellability was found to increase gradually reflecting the controlled release of DAC from nanofibers within 3 weeks. Cell viability assessments using human fibroblasts showed that the developed nanofibers possess high biocompatibility. An in-vivo animal model for skin irritation was carried out for two weeks where visual inspection and histopathological investigations showed that neither edema nor erythema were observed.
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