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Optics and Spectroscopy, 2019, Volume 127, Issue 6, Pages 1039–1045
DOI: https://doi.org/10.21883/OS.2019.12.48706.377-18 (Mi os537) 		 
This article is cited in 1 scientific paper (total in 1 paper)

Biophotonics

Monitoring of changes in oxygen concentration in tissues by the kinetics of delayed fluorescence of exogenous dyes

S. N. Letuta, S. N. Pashkevich, E. K. Alidzhanov, Yu. D. Lantukh, D. A. Razdobreev, A. A. Chakak, A. T. Ishemgulov

Orenburg State University, 460018, Orenburg, Russia
Citations (1)
DOI: https://doi.org/10.21883/OS.2019.12.48706.377-18
Abstract: The dynamics of the consumption of oxygen during photodynamic processes and the subsequent restoration of its concentration in malignant tumors and healthy tissues of mice were studied in vitro by the kinetics of long-term luminescence of xanthene dyes. To assess changes in the oxygen concentration in tissues, delayed fluorescence can be used due to singlet–triplet annihilation of singlet oxygen and a sensitizer in the triplet state. Upon periodic pulse excitation of sensitizers, reversible quenching of delayed fluorescence was detected in tumors, which is associated with a decrease in the amount of oxygen in the tissues during photodynamic processes. A method for visualizing the restoration of the initial oxygen concentration in tissues is proposed.
Keywords: singlet–triplet annihilation of excited states, relaxation of excited states, photodynamic therapy, delayed fluorescence.
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation 3.6358.2017/8.9
This work was supported by the Ministry of Education and Science of the Russian Federation, project no. 3.6358.2017/8.9.
Received: 24.12.2018
Revised: 27.08.2019
Accepted: 09.09.2019
English version:
Optics and Spectroscopy, 2019, Volume 127, Issue 6, Pages 1169–1176
DOI: https://doi.org/10.1134/S0030400X19120129
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: S. N. Letuta, S. N. Pashkevich, E. K. Alidzhanov, Yu. D. Lantukh, D. A. Razdobreev, A. A. Chakak, A. T. Ishemgulov, “Monitoring of changes in oxygen concentration in tissues by the kinetics of delayed fluorescence of exogenous dyes”, Optics and Spectroscopy, 127:6 (2019), 1039–1045; Optics and Spectroscopy, 127:6 (2019), 1169–1176
Citation in format AMSBIB
\Bibitem{LetPasAli19}
\by S.~N.~Letuta, S.~N.~Pashkevich, E.~K.~Alidzhanov, Yu.~D.~Lantukh, D.~A.~Razdobreev, A.~A.~Chakak, A.~T.~Ishemgulov
\paper Monitoring of changes in oxygen concentration in tissues by the kinetics of delayed fluorescence of exogenous dyes
\jour Optics and Spectroscopy
\yr 2019
\vol 127
\issue 6
\pages 1039--1045
\mathnet{http://mi.mathnet.ru/os537}
\crossref{https://doi.org/10.21883/OS.2019.12.48706.377-18}
\elib{https://elibrary.ru/item.asp?id=42571261}
\transl
\jour Optics and Spectroscopy
\yr 2019
\vol 127
\issue 6
\pages 1169--1176
\crossref{https://doi.org/10.1134/S0030400X19120129}
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    • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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