Sustained release of bactericidal concentrations of penicillin in the pleural space via an antibiotic-eluting pigtail catheter coated with electrospun nanofibers: Results from in vivo and in vitro studies

11Citations
Citations of this article
20Readers
Mendeley users who have this article in their library.

Abstract

Background: Inadequate intrapleural drug concentrations caused by poor penetration of systemic antibiotics into the pleural cavity is a major cause of treatment failure in empyema. Herein, we describe a novel antibiotic-eluting pigtail catheter coated with electrospun nanofibers used for the sustained release of bactericidal concentrations of penicillin in the pleural space. Methods: Electrospun nanofibers prepared using polylactide-polyglycolide copolymer and penicillin G sodium dissolved in 1,1,1,3,3,3-hexafuoro-2-propanol were used to coat the surface of an Fr6 pigtail catheter. The in vitro patterns of drug release were tested by placing the catheter in phosphate-buffered saline. In vivo studies were performed using rabbits treated with penicillin either intrapleurally (Group 1, 20 mg delivered through the catheter) or systemically (Group 2, intramuscular injection, 10 mg/kg). Penicillin concentrations in the serum and pleural fuid were then measured and compared. Results: In vitro studies revealed a burst release of penicillin (10% of the total dose) occurring in the frst 24 hours, followed by a sustained release in the subsequent 30 days. Intrapleural drug levels were significantly higher in Group 1 than in Group 2 (P,0.001). In the former, penicillin concentrations remained above the minimum inhibitory concentration breakpoint throughout the entire study period. In contrast, serum penicillin levels were significantly higher in Group 2 than in Group 1 (P,0.001). Notably, all Group 2 rabbits showed signs of systemic toxicity (paralytic ileus and weight loss). Conclusion: We conclude that our antibiotic-eluting catheter may serve as a novel therapeutic option to treat empyema.

Cite

CITATION STYLE

APA

Chao, Y. K., Lee, C. H., Liu, K. S., Wang, Y. C., Wang, C. W., & Liu, S. J. (2015). Sustained release of bactericidal concentrations of penicillin in the pleural space via an antibiotic-eluting pigtail catheter coated with electrospun nanofibers: Results from in vivo and in vitro studies. International Journal of Nanomedicine, 10, 3329–3336. https://doi.org/10.2147/IJN.S82228

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free