1
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Shariati B K B, Ansari MA, Khatami SS, Tuchin VV. Multimodal optical clearing to minimize light attenuation in biological tissues. Sci Rep 2023; 13:21509. [PMID: 38057535 PMCID: PMC10700339 DOI: 10.1038/s41598-023-48876-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023] Open
Abstract
The biggest obstacle to optical imaging is light attenuation in biological tissues. Conventional clearing techniques, such as agent-based clearing, improve light penetration depth by reducing scattering, but they are hampered by drawbacks including toxicity, low efficiency, slowness, and superficial performance, which prevent them from resolving the attenuation problem on their own. Therefore, quick, safe, and effective procedures have been developed. One of them involves using standing ultrasonic waves to build light waveguides that function effectively in the tissue depth while minimizing scattering. Temporal optical clearing is another agent-free strategy that we introduced in our previous article. Whereas not deep, this technique minimizes both light absorption and scattering by pulse width variation in ultra-short pulse regime. Consequently, it can be a complementary method for ultrasonic optical clearing. In this work, we enhanced the light penetration depth in chicken breast tissue by 10 times (0.67-6.7 cm), setting a record in literature by integrating three clearing methods: agent-based, ultrasound-based, and temporal. Here, optical coherence tomography, Bear-Lambert, and fluorescence tests have been used to study the light penetration depth and optical clearing efficiency. Presented work is an essential step in development of diagnostic techniques for human body, from cells to organs.
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Affiliation(s)
- Behnam Shariati B K
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, 19839 69411, Iran
| | - Mohammad Ali Ansari
- Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, 19839 69411, Iran.
| | | | - Valery V Tuchin
- Science Medical Center, Saratov State University, 83 Astrakhanskaya Str., Saratov, Russia, 410012
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2
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Visualization of regenerating and repairing hearts. Clin Sci (Lond) 2022; 136:787-798. [PMID: 35621122 PMCID: PMC9886236 DOI: 10.1042/cs20211116] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 02/01/2023]
Abstract
With heart failure continuing to become more prevalent, investigating the mechanisms of heart injury and repair holds much incentive. In contrast with adult mammals, other organisms such as teleost fish, urodele amphibians, and even neonatal mammals are capable of robust cardiac regeneration to replenish lost or damaged myocardial tissue. Long-term high-resolution intravital imaging of the behaviors and interactions of different cardiac cell types in their native environment could yield unprecedented insights into heart regeneration and repair. However, this task remains challenging for the heart due to its rhythmic contraction and anatomical location. Here, we summarize recent advances in live imaging of heart regeneration and repair, discuss the advantages and limitations of current systems, and suggest future directions for novel imaging technology development.
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3
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Richardson DS, Guan W, Matsumoto K, Pan C, Chung K, Ertürk A, Ueda HR, Lichtman JW. TISSUE CLEARING. NATURE REVIEWS. METHODS PRIMERS 2022; 1. [PMID: 35128463 DOI: 10.1038/s43586-021-00080-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tissue clearing of gross anatomical samples was first described over a century ago and has only recently found widespread use in the field of microscopy. This renaissance has been driven by the application of modern knowledge of optical physics and chemical engineering to the development of robust and reproducible clearing techniques, the arrival of new microscopes that can image large samples at cellular resolution and computing infrastructure able to store and analyze large data volumes. Many biological relationships between structure and function require investigation in three dimensions and tissue clearing therefore has the potential to enable broad discoveries in the biological sciences. Unfortunately, the current literature is complex and could confuse researchers looking to begin a clearing project. The goal of this Primer is to outline a modular approach to tissue clearing that allows a novice researcher to develop a customized clearing pipeline tailored to their tissue of interest. Further, the Primer outlines the required imaging and computational infrastructure needed to perform tissue clearing at scale, gives an overview of current applications, discusses limitations and provides an outlook on future advances in the field.
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Affiliation(s)
- Douglas S Richardson
- Harvard Center for Biological Imaging, Harvard University, Cambridge, MA, USA.,Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA
| | - Webster Guan
- Department of Chemical Engineering, MIT, Cambridge, MA, USA
| | - Katsuhiko Matsumoto
- Department of Systems Pharmacology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Laboratory for Synthetic Biology, RIKEN Center for Biosystems Dynamics Research, Osaka, Japan
| | - Chenchen Pan
- Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig Maximilians University of Munich, Munich, Germany.,Graduate School of Systemic Neurosciences (GSN), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Kwanghun Chung
- Department of Systems Pharmacology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Picower Institute for Learning and Memory, MIT, Cambridge, MA, USA.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, USA.,Department of Brain and Cognitive Sciences, MIT, Cambridge, MA, USA.,Broad Institute of Harvard University and MIT, Cambridge, MA, USA.,Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, Republic of Korea.,Nano Biomedical Engineering (Nano BME) Graduate Program, Yonsei-IBS Institute, Yonsei University, Seoul, Republic of Korea
| | - Ali Ertürk
- Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig Maximilians University of Munich, Munich, Germany.,Graduate School of Systemic Neurosciences (GSN), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Hiroki R Ueda
- Department of Systems Pharmacology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Laboratory for Synthetic Biology, RIKEN Center for Biosystems Dynamics Research, Osaka, Japan
| | - Jeff W Lichtman
- Harvard Center for Biological Imaging, Harvard University, Cambridge, MA, USA.,Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA.,Center for Brain Science, Harvard University, Cambridge, MA, USA
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4
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Coto Hernández I, Yang W, Mohan S, Jowett N. Label-free histomorphometry of peripheral nerve by stimulated Raman spectroscopy. Muscle Nerve 2020; 62:137-142. [PMID: 32304246 DOI: 10.1002/mus.26895] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 04/05/2020] [Accepted: 04/12/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Conventional processing of nerve for histomorphometry is resource-intensive, precluding use in intraoperative assessment of nerve quality during nerve transfer procedures. Stimulated Raman scattering (SRS) microscopy is a label-free technique that enables rapid and high-resolution histology. METHODS Segments of healthy murine sciatic nerve, healthy human obturator nerve, and human cross-facial nerve autografts were imaged on a custom SRS microscope. Myelinated axon quantification was performed through segmentation using a random forest machine learning algorithm in commercial software. RESULTS High contrast, high-resolution imaging of nerve morphology was obtained with SRS imaging. Automated myelinated axon quantification from cross-sections of healthy human nerve imaged using SRS was achieved. CONCLUSIONS Herein, we demonstrate the use of a label-free technique for rapid imaging of murine and human peripheral nerve cryosections. We illustrate the potential of this technique to inform intraoperative decision-making through rapid automated quantification of myelinated axons using a machine learning algorithm.
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Affiliation(s)
- Iván Coto Hernández
- Surgical Photonics and Engineering Laboratory, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
| | - Wenlong Yang
- Center for Advanced Imaging, Harvard University, Cambridge, Massachusetts
| | - Suresh Mohan
- Surgical Photonics and Engineering Laboratory, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
| | - Nate Jowett
- Surgical Photonics and Engineering Laboratory, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts
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5
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Gong P, Almasian M, van Soest G, de Bruin DM, van Leeuwen TG, Sampson DD, Faber DJ. Parametric imaging of attenuation by optical coherence tomography: review of models, methods, and clinical translation. JOURNAL OF BIOMEDICAL OPTICS 2020; 25:1-34. [PMID: 32246615 PMCID: PMC7118361 DOI: 10.1117/1.jbo.25.4.040901] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/28/2020] [Indexed: 05/07/2023]
Abstract
SIGNIFICANCE Optical coherence tomography (OCT) provides cross-sectional and volumetric images of backscattering from biological tissue that reveal the tissue morphology. The strength of the scattering, characterized by an attenuation coefficient, represents an alternative and complementary tissue optical property, which can be characterized by parametric imaging of the OCT attenuation coefficient. Over the last 15 years, a multitude of studies have been reported seeking to advance methods to determine the OCT attenuation coefficient and developing them toward clinical applications. AIM Our review provides an overview of the main models and methods, their assumptions and applicability, together with a survey of preclinical and clinical demonstrations and their translation potential. RESULTS The use of the attenuation coefficient, particularly when presented in the form of parametric en face images, is shown to be applicable in various medical fields. Most studies show the promise of the OCT attenuation coefficient in differentiating between tissues of clinical interest but vary widely in approach. CONCLUSIONS As a future step, a consensus on the model and method used for the determination of the attenuation coefficient is an important precursor to large-scale studies. With our review, we hope to provide a basis for discussion toward establishing this consensus.
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Affiliation(s)
- Peijun Gong
- The University of Western Australia, Department of Electrical, Electronic and Computer Engineering, Optical+Biomedical Engineering Laboratory, Perth, Western Australia, Australia
- Address all correspondence to Peijun Gong, E-mail:
| | - Mitra Almasian
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - Gijs van Soest
- Erasmus MC, University Medical Center Rotterdam, Department of Cardiology, Rotterdam, The Netherlands
| | - Daniel M. de Bruin
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - Ton G. van Leeuwen
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
| | - David D. Sampson
- The University of Western Australia, Department of Electrical, Electronic and Computer Engineering, Optical+Biomedical Engineering Laboratory, Perth, Western Australia, Australia
- University of Surrey, Surrey Biophotonics, Guildford, Surrey, United Kingdom
| | - Dirk J. Faber
- University of Amsterdam, Amsterdam University Medical Centers, Cancer Center Amsterdam, Amsterdam Cardiovascular Sciences, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
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Costantini I, Cicchi R, Silvestri L, Vanzi F, Pavone FS. In-vivo and ex-vivo optical clearing methods for biological tissues: review. BIOMEDICAL OPTICS EXPRESS 2019; 10:5251-5267. [PMID: 31646045 PMCID: PMC6788593 DOI: 10.1364/boe.10.005251] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 05/05/2023]
Abstract
Every optical imaging technique is limited in its penetration depth by scattering occurring in biological tissues. Possible solutions to overcome this problem consist of limiting the detrimental effects of scattering by reducing optical inhomogeneities within the sample. This can be achieved either by using physical methods (such as refractive index matching solutions) or by chemical methods (such as the removal of scatterers), based on tissue transformation protocols. This review provides an overview of the current state-of-the-art methods used for both ex-vivo and in-vivo optical clearing of biological tissues. We start with a brief history of the development of the most widespread clearing methods across the new millennium, then we describe the working principles of both physical and chemical methods. Clearing methods are then reviewed, pointing the attention of the reader on both physical and chemical methods, classified based on the tissue size and type for each specific application. A small section is reserved for methods that have already found in-vivo applications at the research level. Finally, a detailed discussion highlighting both the most relevant results achieved and the new ongoing developments in this field is reported in the last part, together with future perspectives for the clearing methodology.
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Affiliation(s)
- Irene Costantini
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Riccardo Cicchi
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
| | - Ludovico Silvestri
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- Department of Physics and Astronomy, University of Florence, Via Sansone 1, Sesto Fiorentino, 50019, Italy
| | - Francesco Vanzi
- European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- Department of Biology, University of Florence, Via Madonna del Piano 6, Sesto Fiorentino, 50019, Italy
| | - Francesco Saverio Pavone
- National Institute of Optics, National Research Council, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-linear Spectroscopy, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino, Italy
- Department of Physics and Astronomy, University of Florence, Via Sansone 1, Sesto Fiorentino, 50019, Italy
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7
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Sdobnov AY, Lademann J, Darvin ME, Tuchin VV. Methods for Optical Skin Clearing in Molecular Optical Imaging in Dermatology. BIOCHEMISTRY (MOSCOW) 2019; 84:S144-S158. [PMID: 31213200 DOI: 10.1134/s0006297919140098] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This short review describes recent progress in using optical clearing (OC) technique in skin studies. Optical clearing is an efficient tool for enhancing the probing depth and data quality in multiphoton microscopy and Raman spectroscopy. Here, we discuss the main mechanisms of OC, its safety, advantages, and limitations. The data on the OC effect on the skin water content are presented. It was demonstrated that 70% glycerol and 100% OmnipaqueTM 300 reduce the water content in the skin. Both OC agents (OCAs) significantly affect the strongly bound and weakly bound water. However, OmnipaqueTM 300 causes considerably less skin dehydration than glycerol. In addition, the results of examination of the OC effect on autofluorescence in two-photon excitation and background fluorescence in Raman scattering at different skin depths are presented. It is shown that OmnipaqueTM 300 is a promising OCA due to its ability to reduce background fluorescence in the upper skin layers. The possibility of multimodal imaging combining optical methods and OC technique is discussed.
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Affiliation(s)
- A Yu Sdobnov
- Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu, 90570, Finland. .,Research-Educational Institute of Optics and Biophotonics, Saratov State University, Saratov, 410012, Russia
| | - J Lademann
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, 10117, Germany
| | - M E Darvin
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, 10117, Germany
| | - V V Tuchin
- Research-Educational Institute of Optics and Biophotonics, Saratov State University, Saratov, 410012, Russia.,Laboratory of Laser Diagnostics of Technical and Living Systems, Institute of Precision Mechanics and Control, Russian Academy of Sciences, Saratov, 410028, Russia.,Interdisciplinary Laboratory of Biophotonics, Tomsk State University, Tomsk, 634050, Russia.,Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia
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8
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Sdobnov AY, Darvin ME, Genina EA, Bashkatov AN, Lademann J, Tuchin VV. Recent progress in tissue optical clearing for spectroscopic application. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 197:216-229. [PMID: 29433855 DOI: 10.1016/j.saa.2018.01.085] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/25/2018] [Accepted: 01/31/2018] [Indexed: 05/03/2023]
Abstract
This paper aims to review recent progress in optical clearing of the skin and over naturally turbid biological tissues and blood using this technique in vivo and in vitro with multiphoton microscopy, confocal Raman microscopy, confocal microscopy, NIR spectroscopy, optical coherence tomography, and laser speckle contrast imaging. Basic principles of the technique, its safety, advantages and limitations are discussed. The application of optical clearing agent on a tissue allows for controlling the optical properties of tissue. Optical clearing-induced reduction of tissue scattering significantly facilitates the observation of deep-located tissue regions, at the same time improving the resolution and image contrast for a variety of optical imaging methods suitable for clinical applications, such as diagnostics and laser treatment of skin diseases, mucosal tumor imaging, laser disruption of pathological abnormalities, etc.
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Affiliation(s)
- A Yu Sdobnov
- Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu 90570, Finland; Research-Educational Institute of Optics and Biophotonics, Saratov State University (National Research University of Russia), Astrakhanskaya 83, 410012 Saratov, Russian Federation.
| | - M E Darvin
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany
| | - E A Genina
- Research-Educational Institute of Optics and Biophotonics, Saratov State University (National Research University of Russia), Astrakhanskaya 83, 410012 Saratov, Russian Federation; Interdisciplinary Laboratory of Biophotonics, Tomsk State University (National Research University of Russia), Lenin's av. 36, 634050 Tomsk, Russian Federation
| | - A N Bashkatov
- Research-Educational Institute of Optics and Biophotonics, Saratov State University (National Research University of Russia), Astrakhanskaya 83, 410012 Saratov, Russian Federation; Interdisciplinary Laboratory of Biophotonics, Tomsk State University (National Research University of Russia), Lenin's av. 36, 634050 Tomsk, Russian Federation
| | - J Lademann
- Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Venerology and Allergology, Charité - Universitätsmedizin Berlin, Corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Charitéplatz 1, 10117 Berlin, Germany
| | - V V Tuchin
- Research-Educational Institute of Optics and Biophotonics, Saratov State University (National Research University of Russia), Astrakhanskaya 83, 410012 Saratov, Russian Federation; Interdisciplinary Laboratory of Biophotonics, Tomsk State University (National Research University of Russia), Lenin's av. 36, 634050 Tomsk, Russian Federation; Laboratory of Laser Diagnostics of Technical and Living Systems, Institute of Precision Mechanics and Control RAS, Rabochaya 24, 410028 Saratov, Russian Federation
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9
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Shi R, Guo L, Zhang C, Feng W, Li P, Ding Z, Zhu D. A useful way to develop effective in vivo skin optical clearing agents. JOURNAL OF BIOPHOTONICS 2017; 10:887-895. [PMID: 28009130 DOI: 10.1002/jbio.201600221] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 10/27/2016] [Accepted: 11/29/2016] [Indexed: 05/11/2023]
Abstract
Skin optical clearing has shown tremendous potential in improving various optical imaging performances, but there is some certain blindness in screening out high-efficiency in vivo optical clearing methods. In this work, three optical clearing agents: sucrose (Suc), fructose (Fruc) and PEG-400 (PEG), and two chemical penetration enhancers: propylene glycol (PG) and thiazone (Thiaz) were used. PEG was firstly mixed with the two penetration enhancers, respectively, and then mixed with Fruc and Suc, respectively, to obtain six kinds of skin optical clearing agents (SOCAs). Optical coherence tomography angiography was applied to monitor SOCAs-induced changes in imaging performances, skin optical properties, refractive index mismatching extent, and permeability rate. Experimental results demonstrated that PEG+Thiaz+Suc has the optimal capacity in enhancing the imaging performances, decreasing the scattering and the refractive index mismatching since Thiaz is superior to PG, and Suc is superior to Fruc. This study indicates that the optimal SOCA can be obtained directly by means of additionally adding or replacing the similar category substance in preexisting SOCAs with some more effective reagents. It not only provides an optimal SOCA, but also provides a useful way to develop more effective SOCAs. Cross-section skin structural texture (a), reconstructed blood flow distribution information (b), before or after treated with different SOCAs.
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Affiliation(s)
- Rui Shi
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
- Department of Biomedical Engineering, Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
| | - Li Guo
- Department of Optical Science and Engineering, State Key Laboratory of Modern Optical Instrumentation, ZheJiang University, 38 Zheda Road, Hangzhou, 310027, Zhejiang, P.R. China
| | - Chao Zhang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
- Department of Biomedical Engineering, Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
| | - Wei Feng
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
- Department of Biomedical Engineering, Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
| | - Peng Li
- Department of Optical Science and Engineering, State Key Laboratory of Modern Optical Instrumentation, ZheJiang University, 38 Zheda Road, Hangzhou, 310027, Zhejiang, P.R. China
| | - Zhihua Ding
- Department of Optical Science and Engineering, State Key Laboratory of Modern Optical Instrumentation, ZheJiang University, 38 Zheda Road, Hangzhou, 310027, Zhejiang, P.R. China
| | - Dan Zhu
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
- Department of Biomedical Engineering, Key Laboratory of Biomedical Photonics, Ministry of Education, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430074, Hubei, P.R. China
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10
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Guo L, Shi R, Zhang C, Zhu D, Ding Z, Li P. Optical coherence tomography angiography offers comprehensive evaluation of skin optical clearing in vivo by quantifying optical properties and blood flow imaging simultaneously. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:081202. [PMID: 26950927 DOI: 10.1117/1.jbo.21.8.081202] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/31/2015] [Indexed: 05/03/2023]
Abstract
Tissue optical clearing (TOC) is helpful for reducing scattering and enhancing the penetration depth of light, and shows promising potential in optimizing optical imaging performances. A mixture of fructose with PEG-400 and thiazone (FPT) is used as an optical clearing agent in mouse dorsal skin and evaluated with OCT angiography (Angio-OCT) by quantifying optical properties and blood flow imaging simultaneously. It is observed that FPT leads to an improved imaging performance for the deeper tissues. The imaging performance improvement is most likely caused by the FPT-induced dehydration of skin, and the reduction of scattering coefficient (more than ∼ 40.5%) and refractive-index mismatching (more than ∼ 25.3%) in the superficial (epidermal, dermal, and hypodermal) layers. A high correlation (up to ∼ 90%) between the relative changes in refractive-index mismatching and Angio-OCT signal strength is measured. The optical clearing rate is ∼ 5.83 × 10(-5) cm/s. In addition, Angio-OCT demonstrates enhanced performance in imaging cutaneous hemodynamics with satisfactory spatiotemporal resolution and contrast when combined with TOC, which exhibits a powerful practical application in studying microcirculation.
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Affiliation(s)
- Li Guo
- Zhejiang University, College of Optical Science and Engineering, State Key Lab of Modern Optical Instrumentation, 38 Zheda Road, Hangzhou, Zhejiang 310027, China
| | - Rui Shi
- Huazhong University of Science and Technology, Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, 1037 Luoyu Road, Wuhan, Hubei 430074, ChinacHuazhong University of Science and Technology, Department of Biomedic
| | - Chao Zhang
- Huazhong University of Science and Technology, Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, 1037 Luoyu Road, Wuhan, Hubei 430074, ChinacHuazhong University of Science and Technology, Department of Biomedic
| | - Dan Zhu
- Huazhong University of Science and Technology, Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, 1037 Luoyu Road, Wuhan, Hubei 430074, ChinacHuazhong University of Science and Technology, Department of Biomedic
| | - Zhihua Ding
- Zhejiang University, College of Optical Science and Engineering, State Key Lab of Modern Optical Instrumentation, 38 Zheda Road, Hangzhou, Zhejiang 310027, China
| | - Peng Li
- Zhejiang University, College of Optical Science and Engineering, State Key Lab of Modern Optical Instrumentation, 38 Zheda Road, Hangzhou, Zhejiang 310027, China
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11
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Yang X, Zhang Y, Zhao K, Zhao Y, Liu Y, Gong H, Luo Q, Zhu D. Skull Optical Clearing Solution for Enhancing Ultrasonic and Photoacoustic Imaging. IEEE TRANSACTIONS ON MEDICAL IMAGING 2016; 35:1903-6. [PMID: 26886977 DOI: 10.1109/tmi.2016.2528284] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The performance of photoacoustic microscopy (PAM) degrades due to the turbidity of the skull that introduces attenuation and distortion of both laser and stimulated ultrasound. In this manuscript, we demonstrated that a newly developed skull optical clearing solution (SOCS) could enhance not only the transmittance of light, but also that of ultrasound in the skull in vitro. Thus the photoacoustic signal was effectively elevated, and the relative strength of the artifacts induced by the skull could be suppressed. Furthermore in vivo studies demonstrated that SOCS could drastically enhance the performance of photoacoustic microscopy for cerebral microvasculature imaging.
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12
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Liopo A, Su R, Tsyboulski DA, Oraevsky AA. Optical clearing of skin enhanced with hyaluronic acid for increased contrast of optoacoustic imaging. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:081208. [PMID: 27232721 PMCID: PMC4882400 DOI: 10.1117/1.jbo.21.8.081208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 04/18/2016] [Indexed: 05/06/2023]
Abstract
Enhanced delivery of optical clearing agents (OCA) through skin may improve sensitivity of optical and optoacoustic (OA) methods of imaging, sensing, and monitoring. This report describes a two-step method for enhancement of light penetration through skin. Here, we demonstrate that topical application of hyaluronic acid (HA) improves skin penetration of hydrophilic and lipophilic OCA and thus enhances their performance. We examined the OC effect of 100% polyethylene and polypropylene glycols (PPGs) and their mixture after pretreatment by HA, and demonstrated significant increase in efficiency of light penetration through skin. Increased light transmission resulted in a significant increase of OA image contrast in vitro. Topical pretreatment of skin for about 30 min with 0.5% HA in aqueous solution offers effective delivery of low molecular weight OCA such as a mixture of PPG-425 and polyethylene glycol (PEG)-400. The developed approach of pretreatment by HA prior to application of clearing agents (PEG and PPG) resulted in a ∼ 47-fold increase in transmission of red and near-infrared light and significantly enhanced contrast of OA images.
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Affiliation(s)
- Anton Liopo
- TomoWave Laboratories, 6550 Mapleridge Street Suite 124, Houston, Texas 77081, United States
| | - Richard Su
- TomoWave Laboratories, 6550 Mapleridge Street Suite 124, Houston, Texas 77081, United States
- University of Houston, Department of Biomedical Engineering, 3600 Calhoun Road, Houston, Texas 77004, United States
| | - Dmitri A. Tsyboulski
- TomoWave Laboratories, 6550 Mapleridge Street Suite 124, Houston, Texas 77081, United States
| | - Alexander A. Oraevsky
- TomoWave Laboratories, 6550 Mapleridge Street Suite 124, Houston, Texas 77081, United States
- University of Houston, Department of Biomedical Engineering, 3600 Calhoun Road, Houston, Texas 77004, United States
- Address all correspondence to: Alexander A. Oraevsky, E-mail:
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Abstract
PURPOSE OF REVIEW Throughout history, development of novel microscopy techniques has been of fundamental importance to advance the vascular biology field.This review offers a concise summary of the most recently developed imaging techniques and discusses how they can be applied to vascular biology. In addition, we reflect upon the most important fluorescent reporters for vascular research that are currently available. RECENT FINDINGS Recent advances in light sheet-based imaging techniques now offer the ability to live image the vascular system in whole organs or even in whole animals during development and in pathological conditions with a satisfactory spatial and temporal resolution. Conversely, super resolution microscopy now allows studying cellular processes at a near-molecular resolution. SUMMARY Major recent improvements in a number of imaging techniques now allow study of vascular biology in ways that could not be considered previously. Researchers now have well-developed tools to specifically examine the dynamic nature of vascular development during angiogenic sprouting, remodeling and regression as well as the vascular responses in disease situations in vivo. In addition, open questions in endothelial and lymphatic cell biology that require subcellular resolution such as actin dynamics, junctional complex formation and stability, vascular permeability and receptor trafficking can now be approached with high resolution.
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Affiliation(s)
- Bàrbara Laviña
- Department of Immunology, Genetics and Pathology, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
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