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Published in: Lasers in Medical Science 4/2021

01-06-2021 | Photodynamic Therapy | Original Article

Biochemical changes in Leishmania braziliensis after photodynamic therapy with methylene blue assessed by the Fourier transform infrared spectroscopy

Authors: Kumiko Koibuchi Sakane, Tanmoy Bhattacharjee, Jaciara Fagundes, Luciana Maria Cortez Marcolino, Isabelle Ferreira, Juliana Guerra Pinto, Juliana Ferreira-Strixino

Published in: Lasers in Medical Science | Issue 4/2021

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Abstract

Photodynamic therapy (PDT) with photosensitizer methylene blue was applied to Leishmania braziliensis, and Fourier transform infrared (FTIR) spectroscopy was used to study biochemical changes in the parasite after PDT in comparison to untreated (C), only irradiation (I), and only photosensitizer (PS). Spectral analysis suggests increase in lipids, proteins, and protein secondary structures in PDT compared with C and decrease in nucleic acids and carbohydrates. Interestingly, these trends are different from PDT of Leishmania major species, wherein lipids decrease; there are minimal changes in secondary structures and increase in nucleic acids and carbohydrates. The study thus suggests possibility of different biomolecular players/pathways in PDT-induced death of L. braziliensis and L. major.
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Metadata
Title
Biochemical changes in Leishmania braziliensis after photodynamic therapy with methylene blue assessed by the Fourier transform infrared spectroscopy
Authors
Kumiko Koibuchi Sakane
Tanmoy Bhattacharjee
Jaciara Fagundes
Luciana Maria Cortez Marcolino
Isabelle Ferreira
Juliana Guerra Pinto
Juliana Ferreira-Strixino
Publication date
01-06-2021
Publisher
Springer London
Published in
Lasers in Medical Science / Issue 4/2021
Print ISSN: 0268-8921
Electronic ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-020-03110-2

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