Fourier Transform Infrared Spectroscopy (FT-IR) of Pseudomonas aeruginosa post photodynamic therapy with Curcumin in vitro

Autor: Camila Monteiro Santos Marques, Juliana Teixeira Pedroso, Tanmoy Bhattacharjee, Breno Pupin, Juliana Guerra Pinto, Juliana Ferreira-Strixino, Kumiko Koibuchi Sakane
Rok vydání: 2022
Předmět:
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 285
ISSN: 1873-3557
Popis: Alternative therapies against pathogens are under intense investigation because of their increasing resistance to antibiotics. Photodynamic therapy (PDT) is one such alternative that has shown promising results. However, for the widespread use of PDT, it is essential to decipher underlying mechanisms, so as to improve PDT's therapeutic applications. Because of this, we have studied biochemical changes in pathogen Pseudomonas aeruginosa, a medically important bacteria that has developed antibiotic resistance, after PDT with curcumin photosensitizer. Results show a drastic decrease in α-helix protein and increased disordered and β-sheet secondary structure proteins in P. Aeruginosa post-PDT compared to control. Interestingly, these biochemical changes differ from PDT of pathogens Leishmania braziliensis and Leishmania major with photosensitizer methylene blue. This observation underlines the need for extensive studies on PDT of different pathogens to understand mechanisms of action and develop better PDT strategies.
Databáze: OpenAIRE