Cationic Porphyrins as Antimicrobial and Antiviral Agents in Photodynamic Therapy

Area of Science:

• Photochemistry
• Microbiology
• Infectious Diseases

Background:

• Infectious diseases caused by bacteria and viruses are a major global health concern, leading to high mortality and pandemics.
• The rise of multidrug-resistant bacteria renders existing antibiotics ineffective, necessitating novel therapeutic strategies.
• Emerging viral pathogens pose a continuous threat, with new dangerous species identified regularly.

Purpose of the Study:

• To review the mechanisms of antiviral and antibacterial action of antimicrobial photodynamic therapy (APDT).
• To identify molecular targets and structure-activity relationships of cationic porphyrins used in APDT.
• To highlight APDT as a promising alternative to conventional antimicrobial treatments.

Main Methods:

• Literature review of studies on antimicrobial photodynamic therapy.
• Analysis of mechanisms underlying photodynamic inactivation of viruses and bacteria.
• Correlation analysis between cationic porphyrin structure and photodynamic activity.

Main Results:

• APDT demonstrates broad-spectrum efficacy against various microorganisms, including bacteria and viruses.
• Key molecular targets and pathways involved in APDT's antimicrobial action have been identified.
• A correlation exists between the structural characteristics of cationic porphyrins and their photodynamic efficacy.

Conclusions:

• Antimicrobial photodynamic therapy presents a potent strategy for combating both bacterial and viral infections.
• The development of novel antimicrobial agents is crucial due to increasing drug resistance and emerging pathogens.
• Further research into cationic porphyrins can optimize APDT for enhanced therapeutic outcomes.