How antibiotics can make us sick: the less obvious adverse effects of antimicrobial chemotherapy

Area of Science:

• Microbiology
• Infectious Diseases
• Clinical Pharmacology

Background:

• Antimicrobial agents are vital for treating infections, but their use is associated with known side-effects.
• Clinicians often overlook less obvious adverse events, such as the overgrowth of resistant microorganisms.
• This overgrowth can lead to secondary infections and contribute to global antimicrobial resistance.

Purpose of the Study:

• To highlight the under-recognized adverse events associated with antimicrobial use.
• To emphasize the link between antimicrobial consumption, microbial resistance, and enhanced pathogenicity.
• To underscore the importance of microbiological understanding in appropriate antibiotic prescribing.

Main Methods:

• Literature review and synthesis of existing data on antimicrobial side-effects and resistance.
• Analysis of the molecular mechanisms by which antibiotic exposure may enhance microbial virulence.
• Discussion of clinical and environmental implications of antimicrobial overconsumption.

Main Results:

• Antimicrobial use can lead to the proliferation of resistant organisms, potentially causing more severe secondary infections.
• Molecular alterations in microorganisms exposed to antibiotics may increase their virulence.
• Inappropriate prescribing, driven by a lack of microbiological insight, exacerbates these issues.

Conclusions:

• The less obvious consequences of antimicrobial use, including resistance and enhanced pathogenicity, are often unrecognized in routine clinical practice.
• Enhanced understanding of microbiology and environmental impact is essential for responsible antimicrobial stewardship.
• Addressing these overlooked factors is critical to combatting the growing threat of antimicrobial resistance worldwide.