Randomized trial demonstrates copper ions enhancing tigecycline efficacy in bacterial infections, suggesting new therapeutic strategies.
Key Points
This study aims to investigate how copper ions can restore the antibacterial activity of tigecycline through their effects on photodegradation pathways.
Identified chalcanthite and confirmed Cu2+ salts to restore antimicrobial activity against bacterial strains.
Employed spectroscopic and chromatographic methods along with quantum chemical calculations.
Utilized animal infection models to assess the therapeutic effectiveness of copper gluconate-tigecycline.
Cu2+ salts restored antibacterial activity of tigecycline under light against most bacterial strains, FIC < 0.5.
Photolytic degradation pathway was selectively regulated by Cu2+, protecting essential molecular structures.
Therapeutic efficacy was demonstrated under photic conditions, providing a foundation for photostable tetracycline formulations.