In vivo efficacy of pyochelin-mediated delivery of zingerone in Pseudomonas aeruginosa-induced peritonitis

Aim: The efficacy of a pyochelin-zingerone conjugate (PZC) against Pseudomonas aeruginosa in vivo in a mouse model of peritonitis, as well as mode of action in vitro, were investigated. Methods & results: Intraperitoneal administration of PZC (220 mg kg^-1 b.wt.) resulted in a significant reduction in Bacterial count in liver tissue by 2 log₁₀ on the 4th day post Infection. This was supported by reduced levels of inflammatory markers, liver function, inflammatory cytokines and improved histopathology. PZC showed its ability to disrupt the cellular membrane, increase permeability of the membrane and leakage of intracellular contents of P. aeruginosa, resulting in its death. Conclusion: The present study reports the hepatoprotective potential of PZC in an experimental model of P. aeruginosa-induced peritonitis.

P. aeruginosa; inflammatory markers; mechanism of action; peritonitis; pyochelin–zingerone conjugate.