Breakthrough in Nanotechnology: Sprayable Nanospheres Rapidly Eliminate Multidrug-Resistant Bacteria and Accelerate Wound Healing

Strategic Insights -

Researchers at the National Institute for Biotechnology and Genetic Engineering College in Faisalabad, Pakistan, have developed a sprayable topical formulation that successfully eliminates multidrug-resistant (MDR) bacteria and accelerates wound healing. The innovative formulation, consisting of ciprofloxacin-loaded chitosan nanospheres (CIP-CNSs), has shown remarkable efficacy in treating MDR-associated wound infections.

Key Takeaways:

  • The CIP-CNSs formulation exhibited a high encapsulation efficiency of 70% and robust in vitro antibacterial activity against MDR strains such as E. coli, S. aureus, and P. aeruginosa.
  • The formulation did not induce any adverse side effects in vitro or topically on the skin, as confirmed by cytotoxicity assay and acute dermal irritation test.
  • In an albino rabbit wound model, CIP-CNSs accelerated wound healing with a wound closure rate of 75-85% within the first week of post-incision, compared to a commercial ointment.
  • Histopathological staining confirmed faster re-epithelialization and collagen deposition in wounded regions, without any hemorrhage or tissue infection.
  • This study highlights the potential of CIP-CNSs as a viable therapeutic strategy against the growing threat of MDR-associated wound infections.

Statistics:

  • The CIP-CNSs formulation achieved a wound closure rate of 75-85% within the first week of post-incision.
  • The formulation exhibited a high encapsulation efficiency of 70% for ciprofloxacin.
  • The antibacterial activity of CIP-CNSs was observed against MDR strains such as E. coli, S. aureus, and P. aeruginosa.

Sources:

  • Quintus et al. Sprayable ciprofloxacin loaded chitosan nanospheres-based topical formulation for eliminating multidrug-resistant bacteria and accelerating infected wound healing. Colloids and Surfaces B-biointerfaces, 2025;254:114880.
  • NewsRx. National Institute for Biotechnology and Genetic Engineering College Reports Findings in Nanospheres (Sprayable ciprofloxacin loaded chitosan nanospheres-based topical formulation for eliminating multidrug-resistant bacteria and accelerating infected wound healing). Nanotechnology Weekly. June 30, 2025; p 611.