Medicinal Plants: A Promising Therapeutic Approach for Addressing Antimicrobial Resistance

Area of Science:

• Microbiology and Pharmacology
• Natural Product Chemistry
• Drug Discovery

Background:

• Antimicrobial resistance (AMR) is a growing global health threat, driven by antibiotic misuse and bacterial adaptation.
• Declining antibiotic efficacy and a slow drug discovery pipeline necessitate novel antimicrobial strategies.
• Understanding the molecular mechanisms of bacterial resistance is crucial for developing effective countermeasures.

Purpose of the Study:

• To review the molecular mechanisms underlying bacterial resistance to antibiotics.
• To assess the potential of plant-derived compounds (phytochemicals) as antimicrobial agents.
• To explore phytochemicals as a sustainable resource for next-generation antimicrobial strategies.

Main Methods:

• Systematic review of literature on antimicrobial resistance mechanisms.
• Comprehensive assessment of phytochemicals (flavonoids, alkaloids, phenolics) for antimicrobial potential.
• Analysis of phytochemicals' multi-target activities and synergistic effects with antibiotics.

Main Results:

• Phytochemicals exhibit diverse mechanisms of action, including direct antimicrobial effects and resistance modulation.
• These natural products act as biofilm disruptors, enzyme inhibitors, and efflux pump blockers.
• Phytochemicals demonstrate synergistic effects with existing antibiotics, resensitizing resistant pathogens.

Conclusions:

• Phytochemicals represent a promising, sustainable resource for combating multidrug-resistant infections.
• Their multi-target activity and low resistance propensity offer advantages over conventional antibiotics.
• Integrating phytochemicals into therapeutic strategies can revitalize the antimicrobial pipeline and extend the utility of current drugs.