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Severe oral infection caused by Pseudomonas aeruginosa effectively treated with methylene blue-mediated photodynamic

F P Eduardo1, L M Bezinelli1, M F Gobbi2

  • 1Hospital Israelita Albert Einstein, Av. Albert Einstein, 627/520 São Paulo, São Paulo, CEP 05651-901, Brazil.

Photodiagnosis and Photodynamic Therapy
|April 17, 2019
PubMed

Insights

Antimicrobial photodynamic inactivation (API) using methylene blue offers a promising treatment for severe oral lesions caused by antibiotic-resistant Pseudomonas aeruginosa. This innovative therapy demonstrated positive clinical outcomes in a challenging case, highlighting its potential for refractory infections.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Photomedicine

Background:

  • Pseudomonas aeruginosa is a significant cause of nosocomial infections, often exhibiting antibiotic resistance.
  • Antibiotic-resistant P. aeruginosa infections lead to high morbidity and mortality, posing clinical challenges.
  • Severe oral lesions represent a potential manifestation of P. aeruginosa infections.

Observation:

  • A clinical case involving severe oral lesions caused by P. aeruginosa is presented.
  • The patient's infection was refractory to conventional antibiotic treatments.
  • Antimicrobial photodynamic inactivation (API) mediated by methylene blue was administered.

Findings:

  • API treatment resulted in positive clinical outcomes for the patient with P. aeruginosa oral lesions.
  • Methylene blue-mediated API showed efficacy against a P. aeruginosa infection resistant to antibiotics.
  • The study discusses the potential therapeutic role of API in managing refractory P. aeruginosa infections.

Implications:

  • API presents a potential alternative therapeutic strategy for antibiotic-resistant P. aeruginosa infections.
  • Understanding P. aeruginosa resistance mechanisms to API is crucial for optimizing treatment protocols.
  • This case highlights the clinical utility of antimicrobial photodynamic inactivation in challenging infectious scenarios.
Keywords:
Antimicrobial photodynamic inactivationMethylene blue dyeOral lesionsP. aeruginosa

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