Toxicity of quinolone antimicrobial agents

Area of Science:

• Pharmacology and Toxicology
• Medicinal Chemistry

Background:

• Minimizing new compound toxicity relies on understanding related compounds' mechanisms and structure-toxicity relationships.
• Elucidating these relationships is challenging, but progress has been made for quinolones, particularly concerning central nervous system (CNS) effects and genotoxicity.

Purpose of the Study:

• To review the known toxic effects of quinolones across various organ systems in experimental animals and humans.
• To assess the utility of mechanistic approaches in minimizing quinolone toxicity.
• To discuss the implications for the safety and efficacy of newly synthesized quinolones.

Main Methods:

• Literature review of existing studies on quinolone toxicity.
• Focus on mechanistic elucidation and structure-toxicity relationships.
• Comparative analysis of quinolone toxicity across different organ systems and with other drug classes (e.g., NSAIDs).

Main Results:

• Quinolone toxicity mechanisms have been partially elucidated, especially for CNS interactions and genotoxicity.
• Significant differences in toxicity profiles exist across various organ systems (cardiovascular, gastrointestinal, bone, reproductive, developmental).
• The mechanistic approach has yielded satisfactory results in toxicity minimization to date.

Conclusions:

• Continued investigation into quinolone toxicity mechanisms is warranted.
• Understanding structure-toxicity relationships is crucial for developing safer quinolone analogs.
• The increasing synthesis of new quinolones necessitates ongoing evaluation of their safety and efficacy profiles.