Metal Resistance and Its Association With Antibiotic Resistance

Area of Science:

• Microbiology
• Public Health
• Environmental Science

Background:

• Antibiotic resistance is a significant global public health threat, causing hundreds of thousands of deaths annually.
• The primary driver of antibiotic resistance is the widespread use, misuse, and overuse of antibiotics in human and animal populations.
• Nonantibiotic compounds, including antibacterial biocides and metals, are increasingly recognized as potential contributors to antibiotic resistance development.

Purpose of the Study:

• To review the current understanding of antimicrobial metal resistance.
• To discuss the phenomenon of co-selection, where resistance to metals and antibiotics can be linked.
• To identify critical knowledge gaps in the field of antimicrobial metal resistance and its connection to antibiotic resistance.

Main Methods:

• Literature review of existing research on antimicrobial metal resistance.
• Analysis of mechanisms of co-resistance and cross-resistance between metals/biocides and antibiotics.
• Synthesis of findings to highlight areas requiring further investigation.

Main Results:

• Metal resistance can be co-selected with antibiotic resistance through shared genetic elements or resistance mechanisms.
• Co-selection can promote the persistence and spread of antibiotic-resistant bacteria and mobile genetic elements.
• The role of biocides and metals in driving antibiotic resistance is a complex issue with significant public health implications.

Conclusions:

• Understanding antimicrobial metal resistance is crucial for addressing the broader challenge of antibiotic resistance.
• Further research is needed to elucidate the precise mechanisms and extent of co-selection.
• Addressing the contribution of nonantibiotic compounds to resistance is essential for effective public health strategies.