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Alexandrovskaya Y, Sadovnikov K, Sharov A, Sherstneva A, Evtushenko E, Omelchenko A, Obrezkova M, Tuchin V, Lunin V, Sobol E. Controlling the near-infrared transparency of costal cartilage by impregnation with clearing agents and magnetite nanoparticles. JOURNAL OF BIOPHOTONICS 2018; 11:e201700105. [PMID: 28731618 DOI: 10.1002/jbio.201700105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 06/07/2023]
Abstract
Penetration depth of near-infrared laser radiation to costal cartilage is controlled by the tissue absorption and scattering, and it is the critical parameter to provide the relaxation of mechanical stress throughout the whole thickness of cartilage implant. To enhance the penetration for the laser radiation on 1.56 μm, the optical clearing solutions of glycerol and fructose of various concentrations are tested. The effective and reversible tissue clearance was achieved. However, the increasing absorption of radiation should be concerned: 5°C-8°C increase of tissue temperature was detected. Laser parameters used for stress relaxation in cartilage should be optimized when applying optical clearing agents. To concentrate the absorption in the superficial tissue layers, magnetite nanoparticle (NP) dispersions with the mean size 95 ± 5 nm and concentration 3.9 ± 1.1 × 1011 particles/mL are applied. The significant increase in the tissue heating rate was observed along with the decrease in its transparency. Using NPs the respective laser power can be decreased, allowing us to obtain the working temperature locally with reduced thermal effect on the surrounding tissue.
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Affiliation(s)
- Yulia Alexandrovskaya
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Moscow, Russia
- M.V. Lomonosov Moscow State University, Moscow, Russia
| | | | - Andrey Sharov
- M.V. Lomonosov Moscow State University, Moscow, Russia
| | | | | | - Alexander Omelchenko
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Moscow, Russia
| | | | - Valery Tuchin
- Research-Educational Institute of Optics and Biophotonics, National Research Saratov State University, Saratov, Russia
- Laboratory of Laser Diagnostics of Technical and Living Systems, Institute of Precision Mechanics and Control RAS, Saratov, Russia
- Interdisciplinary Laboratory of Biophotonics, National Research Tomsk State University, Tomsk, Russia
| | - Valery Lunin
- M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Emil Sobol
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
- Institute of Photon Technologies, Federal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Moscow, Russia
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Sobol E, Baum O, Shekhter A, Wachsmann-Hogiu S, Shnirelman A, Alexandrovskaya Y, Sadovskyy I, Vinokur V. Laser-induced micropore formation and modification of cartilage structure in osteoarthritis healing. JOURNAL OF BIOMEDICAL OPTICS 2017; 22:91515. [PMID: 28564689 DOI: 10.1117/1.jbo.22.9.091515] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Pores are vital for functioning of avascular tissues. Laser-induced pores play an important role in the process of cartilage regeneration. The aim of any treatment for osteoarthritis is to repair hyaline-type cartilage. The aims of this study are to answer two questions: (1) How do laser-assisted pores affect the cartilaginous cells to synthesize hyaline cartilage (HC)? and (2) How can the size distribution of pores arising in the course of laser radiation be controlled? We have shown that in cartilage, the pores arise predominately near chondrocytes, which promote nutrition of cells and signal molecular transfer that activates regeneration of cartilage. In vivo laser treatment of damaged cartilage of miniature pig joints provides cellular transformation and formation of HC. We propose a simple model of pore formation in biopolymers that paves the way for going beyond the trial-and-error approach when choosing an optimal laser treatment regime. Our findings support the approach toward laser healing of osteoarthritis.
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Affiliation(s)
- Emil Sobol
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, RussiabFederal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Institute of Photonic Technologies, Moscow, Russia
| | - Olga Baum
- Federal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Institute of Photonic Technologies, Moscow, Russia
| | - Anatoly Shekhter
- Sechenov First Medical University of Moscow, Institute of Regenerative Medicine, Moscow, Russia
| | - Sebastian Wachsmann-Hogiu
- University of California, Center for Biophotonics, Department of Pathology and Laboratory Medicine, Sacramento, California, United StateseMcGill University, Department of Bioengineering, Montreal, Canada
| | - Alexander Shnirelman
- Concordia University, Department of Mathematics and Statistics, Montreal, Canada
| | - Yulia Alexandrovskaya
- Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, RussiabFederal Scientific Research Centre "Crystallography and Photonics" of the Russian Academy of Sciences, Institute of Photonic Technologies, Moscow, Russia
| | - Ivan Sadovskyy
- Argonne National Laboratory, Materials Science Division, Argonne, Illinois, United States
| | - Valerii Vinokur
- Argonne National Laboratory, Materials Science Division, Argonne, Illinois, United States
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Schuele G, Vitkin E, Huie P, O'Connell-Rodwell C, Palanker D, Perelman LT. Optical spectroscopy noninvasively monitors response of organelles to cellular stress. JOURNAL OF BIOMEDICAL OPTICS 2005; 10:051404. [PMID: 16292941 DOI: 10.1117/1.2075207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Fast and noninvasive detection of cellular stress is extremely useful for fundamental research and practical applications in medicine and biology. We discovered that light scattering spectroscopy enables us to monitor the transformations in cellular organelles under thermal stress. At the temperatures triggering expression of heat shock proteins, the refractive index of mitochondria increase within 1 min after the onset of heating, indicating enhanced metabolic activity. At higher temperatures and longer exposures, the organelles increase in size. This technique provides an insight into metabolic processes within organelles larger than 50 nm without exogenous staining and opens doors for noninvasive real-time assessment of cellular stress.
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Affiliation(s)
- Georg Schuele
- Stanford School of Medicine, Department of Ophthalmology, Stanford, California 94305, USA.
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