Development of metals as antimicrobials: knowledge gaps and future directions

Area of Science:

• Microbiology and Materials Science
• Investigating novel antimicrobial strategies

Background:

• The growing threat of antimicrobial resistance (AMR) has created an urgent need for new antibiotics.
• Pharmaceutical industry interest in antibiotic development has declined, prompting research into alternative infection control agents.
• Metal-based antimicrobials (MBAs), including metal salts, are being revisited for their efficacy against resistant bacteria.

Purpose of the Study:

• To critically review the use of metal salts as antimicrobial and antibiofilm agents.
• To identify challenges in understanding MBA mechanisms of action.
• To propose future directions for developing effective metal-based treatments.

Main Methods:

• Critical review of existing literature on metal-based antimicrobials.
• Analysis of mechanisms of action for metal salts.
• Identification of knowledge gaps and potential research avenues.

Main Results:

• Metal salts show promise as effective antimicrobial and antibiofilm agents against antibiotic-resistant strains.
• Potential misinterpretations of primary and secondary mechanisms of action in MBAs exist.
• Understanding these mechanisms is crucial for effective formulation.

Conclusions:

• Metal salts represent a viable alternative in the fight against antimicrobial resistance.
• Further research is needed to elucidate MBA mechanisms and optimize formulations.
• Successful metal-based treatments must address parameters to ensure long-term efficacy and avoid limitations of traditional antibiotics.