E-cigarette smoking vape impact on optical properties of porcine gingival mucosa measured ex vivo in the range from 200 to 800 nm

Selifonov, A. A.; Selifonova, E. I.; Tuchin, Valery V.

doi:10.1117/12.2632629

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…The selection of the e‐cig fluid for the present study was conditioned by its mixture as an already prepared product for the tobacco consumers, since both glycerol and PG are hygroscopic, both have high RI, as seen in Figure 1, and both provide enhanced biological membrane permeability. Such selection was also made due to the good results obtained with this product in previous optical clearing studies [12, 13]. The 30% of PG in this mixture provides a fast tissue dehydration and enhancement of biological membrane permeability at the beginning of the treatment, allowing that the flux of the 70% glycerol is maximized into the tissue to provide the RI matching mechanism.…”

Section: Methodsmentioning

confidence: 99%

Broadband spectral verification of optical clearing reversibility in lung tissue

Oliveira

Ferreira

Pinheiro

et al. 2022

Journal of Biophotonics

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The increase of tissue transparency through sequential optical immersion clearing treatments and treatment reversibility have high interest for clinical applications. To evaluate the clearing reversibility in a broad spectral range and the magnitude of the transparency created by a second treatment, the present study consisted on measuring the spectral collimated transmittance of lung tissues during a sequence of two treatments with electronic cigarette (e-cig) fluid, which was intercalated with an immersion in saline. The saline immersion clearly reverted the clearing effect in the lung tissue in the spectral range between 220 and 1000 nm. By a later application of a second treatment with the e-cig fluid, the magnitude of the optical clearing effect was observed to be about the double as the one observed in the first treatment, showing that the molecules of the optical clearing agent might have converted some bound water into mobile water during the first treatment.

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Section: Methodsmentioning

confidence: 99%

Broadband spectral verification of optical clearing reversibility in lung tissue

Oliveira

Ferreira

Pinheiro

et al. 2022

Journal of Biophotonics

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“…In study by Selifonov et al (2022), ex vivo clearing effect of vape mixture for the porcine gingival mucosa was assessed by combining the immersion technique with UV-spectroscopy, it was noted that the optical clearing efficiency is much higher in the deep-UV than in the visible-NIR range, the specific features of tissue optics with the formation of three dynamic optical windows in the UV were revealed. These results prove that RI mismatch in tissues is strong in the UV wavelength range, which causes a strong light scattering.…”

Section: Ex Vivo and In Vivo Toc Of Lungsmentioning

confidence: 99%

Optical clearing and testing of lung tissue using inhalation aerosols: prospects for monitoring the action of viral infections

et al. 2022

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Optical clearing of the lung tissue aims to make it more transparent to light by minimizing light scattering, thus allowing reconstruction of the three-dimensional structure of the tissue with a much better resolution. This is of great importance for monitoring of viral infection impact on the alveolar structure of the tissue and oxygen transport. Optical clearing agents (OCAs) can provide not only lesser light scattering of tissue components but also may influence the molecular transport function of the alveolar membrane. Air-filled lungs present significant challenges for optical imaging including optical coherence tomography (OCT), confocal and two-photon microscopy, and Raman spectroscopy, because of the large refractive-index mismatch between alveoli walls and the enclosed air-filled region. During OCT imaging, the light is strongly backscattered at each air-tissue interface, such that image reconstruction is typically limited to a single alveolus. At the same time, the filling of these cavities with an OCA, to which water (physiological solution) can also be attributed since its refractive index is much higher than that of air will lead to much better tissue optical transmittance. This review presents general principles and advances in the field of tissue optical clearing (TOC) technology, OCA delivery mechanisms in lung tissue, studies of the impact of microbial and viral infections on tissue response, and antimicrobial and antiviral photodynamic therapies using methylene blue (MB) and indocyanine green (ICG) dyes as photosensitizers.

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Effect of e-Liquid on the Optical Properties of the Gingival Mucosa: Ex Vivo Studies

Selifonov

Selifonova

Tuchin

2023

IEEE J. Select. Topics Quantum Electron.

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E-cigarette smoking vape impact on optical properties of porcine gingival mucosa measured ex vivo in the range from 200 to 800 nm

Cited by 3 publications

References 20 publications

Broadband spectral verification of optical clearing reversibility in lung tissue

Broadband spectral verification of optical clearing reversibility in lung tissue

Optical clearing and testing of lung tissue using inhalation aerosols: prospects for monitoring the action of viral infections

Effect of e-Liquid on the Optical Properties of the Gingival Mucosa: Ex Vivo Studies

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