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Vulasala SS, Sutphin P, Shyn P, Kalva S. Intraoperative Imaging Techniques in Oncology. Clin Oncol (R Coll Radiol) 2024; 36:e255-e268. [PMID: 38242817 DOI: 10.1016/j.clon.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024]
Abstract
Imaging-based procedures have become well integrated into the diagnosis and management of oncological patients and play a significant role in reducing morbidity and mortality rates. Here we describe the established and upcoming surgical oncological imaging techniques and their impact on cancer management.
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Affiliation(s)
- S S Vulasala
- Department of Radiology, University of Florida College of Medicine, Jacksonville, Florida, USA.
| | - P Sutphin
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - P Shyn
- Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - S Kalva
- Department of Radiology, Massachusetts General Hospital, Boston, Massachusetts, USA
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Banbury C, Harris G, Clancy M, Blanch RJ, Rickard JJS, Goldberg Oppenheimer P. Window into the mind: Advanced handheld spectroscopic eye-safe technology for point-of-care neurodiagnostic. SCIENCE ADVANCES 2023; 9:eadg5431. [PMID: 37967190 PMCID: PMC10651125 DOI: 10.1126/sciadv.adg5431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 10/19/2023] [Indexed: 11/17/2023]
Abstract
Traumatic brain injury (TBI), a major cause of morbidity and mortality worldwide, is hard to diagnose at the point of care with patients often exhibiting no clinical symptoms. There is an urgent need for rapid point-of-care diagnostics to enable timely intervention. We have developed a technology for rapid acquisition of molecular fingerprints of TBI biochemistry to safely measure proxies for cerebral injury through the eye, providing a path toward noninvasive point-of-care neurodiagnostics using simultaneous Raman spectroscopy and fundus imaging of the neuroretina. Detection of endogenous neuromarkers in porcine eyes' posterior revealed enhancement of high-wave number bands, clearly distinguishing TBI and healthy cohorts, classified via artificial neural network algorithm for automated data interpretation. Clinically, translating into reduced specialist support, this markedly improves the speed of diagnosis. Designed as a hand-held cost-effective technology, it can allow clinicians to rapidly assess TBI at the point of care and identify long-term changes in brain biochemistry in acute or chronic neurodiseases.
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Affiliation(s)
- Carl Banbury
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Georgia Harris
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Michael Clancy
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Ministry of Justice, 102 Petty France, Westminster, London, UK
| | - Richard J. Blanch
- Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, College of Medical and Dental Sciences, Robert Aiken Institute for Clinical Research, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Department of Ophthalmology, Queen Elizabeth Hospital Birmingham, UHB NHS Foundation Trust, West Midlands, UK
| | | | - Pola Goldberg Oppenheimer
- School of Chemical Engineering, Advanced Nanomaterials Structures and Applications Laboratories, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
- Healthcare Technologies Institute, Institute of Translational Medicine, Mindelsohn Way, Birmingham, B15 2TH, UK
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Bortot B, Mangogna A, Di Lorenzo G, Stabile G, Ricci G, Biffi S. Image-guided cancer surgery: a narrative review on imaging modalities and emerging nanotechnology strategies. J Nanobiotechnology 2023; 21:155. [PMID: 37202750 DOI: 10.1186/s12951-023-01926-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023] Open
Abstract
Surgical resection is the cornerstone of solid tumour treatment. Current techniques for evaluating margin statuses, such as frozen section, imprint cytology, and intraoperative ultrasound, are helpful. However, an intraoperative assessment of tumour margins that is accurate and safe is clinically necessary. Positive surgical margins (PSM) have a well-documented negative effect on treatment outcomes and survival. As a result, surgical tumour imaging methods are now a practical method for reducing PSM rates and improving the efficiency of debulking surgery. Because of their unique characteristics, nanoparticles can function as contrast agents in image-guided surgery. While most image-guided surgical applications utilizing nanotechnology are now in the preclinical stage, some are beginning to reach the clinical phase. Here, we list the various imaging techniques used in image-guided surgery, such as optical imaging, ultrasound, computed tomography, magnetic resonance imaging, nuclear medicine imaging, and the most current developments in the potential of nanotechnology to detect surgical malignancies. In the coming years, we will see the evolution of nanoparticles tailored to specific tumour types and the introduction of surgical equipment to improve resection accuracy. Although the promise of nanotechnology for producing exogenous molecular contrast agents has been clearly demonstrated, much work remains to be done to put it into practice.
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Affiliation(s)
- Barbara Bortot
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Alessandro Mangogna
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Giovanni Di Lorenzo
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Guglielmo Stabile
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | - Giuseppe Ricci
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Stefania Biffi
- Obstetrics and Gynecology, Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy.
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Hayakawa M, Taylor JN, Nakao R, Mochizuki K, Sawai Y, Hashimoto K, Tabata K, Kumamoto Y, Fujita K, Konishi E, Hirano S, Tanaka H, Komatsuzaki T, Harada Y. Lipid droplet accumulation and adipophilin expression in follicular thyroid carcinoma. Biochem Biophys Res Commun 2023; 640:192-201. [PMID: 36521425 DOI: 10.1016/j.bbrc.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/11/2022]
Abstract
Follicular neoplasms of the thyroid include follicular thyroid carcinoma (FTC) and follicular thyroid adenoma (FTA). However, the differences in cytological findings between FTC and FTA remain undetermined. Here, we aimed to evaluate the accumulation of lipid droplets (LDs) and the expression of adipophilin (perilipin 2/ADRP/ADFP), a known LD marker, in cultured FTC cells. We also immunohistochemically compared adipophilin expression in the FTC and FTA of resected human thyroid tissues. Cultured FTC (FTC-133 and RO82W-1) possessed increased populations of LDs compared to thyroid follicular epithelial (Nthy-ori 3-1) cells. In vitro treatment with phosphatidylinositol-3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling inhibitors (LY294002, MK2206, and rapamycin) in FTC-133 cells downregulated the PI3K/Akt/mTOR/sterol regulatory element-binding protein 1 (SREBP1) signaling pathway, resulting in a significant reduction in LD accumulation. SREBP1 is a master transcription factor that controls lipid metabolism. Fluorescence immunocytochemistry revealed adipophilin expression in the LDs of FTC-133 cells. Immunohistochemical analysis of surgically resected human thyroid tissues revealed significantly increased expression of adipophilin in FTC compared with FTA and adjacent non-tumorous thyroid epithelia. Taken together, LDs and adipophilin were abundant in cultured FTC; the evaluation of adipophilin expression can help distinguish FTC from FTA in surgical specimens.
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Affiliation(s)
- Michiyo Hayakawa
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - J Nicholas Taylor
- Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo, 001-0020, Japan
| | - Ryuta Nakao
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Kentaro Mochizuki
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Yuki Sawai
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Kosuke Hashimoto
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan; Graduate School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo, 669-1330 Japan
| | - Koji Tabata
- Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo, 001-0020, Japan
| | - Yasuaki Kumamoto
- Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka 565-0871, Japan
| | - Katsumasa Fujita
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan; Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka 565-0871, Japan; Advanced Photonics and Biosensing Open Innovation Laboratory, AIST-Osaka University, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Eiichi Konishi
- Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Shigeru Hirano
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan
| | - Tamiki Komatsuzaki
- Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-Ku, Sapporo, 001-0020, Japan.
| | - Yoshinori Harada
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-Cho Kamigyo-Ku, Kyoto, 602-8566, Japan.
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Ultrasensitive Acetylcholinesterase detection based on a surface-enhanced Raman scattering lever strategy for identifying nerve fibers. Talanta 2023; 252:123867. [DOI: 10.1016/j.talanta.2022.123867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 11/20/2022]
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Watanabe TM, Sasaki K, Fujita H. Recent Advances in Raman Spectral Imaging in Cell Diagnosis and Gene Expression Prediction. Genes (Basel) 2022; 13:2127. [PMID: 36421802 PMCID: PMC9690875 DOI: 10.3390/genes13112127] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 06/30/2024] Open
Abstract
Normal and tumor regions within cancer tissue can be distinguished using various methods, such as histological analysis, tumor marker testing, X-ray imaging, or magnetic resonance imaging. Recently, new discrimination methods utilizing the Raman spectra of tissues have been developed and put into practical use. Because Raman spectral microscopy is a non-destructive and non-labeling method, it is potentially compatible for use in the operating room. In this review, we focus on the basics of Raman spectroscopy and Raman imaging in live cells and cell type discrimination, as these form the bases for current Raman scattering-based cancer diagnosis. We also review recent attempts to estimate the gene expression profile from the Raman spectrum of living cells using simple machine learning. Considering recent advances in machine learning techniques, we speculate that cancer type discrimination using Raman spectroscopy will be possible in the near future.
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Affiliation(s)
- Tomonobu M. Watanabe
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Minami-ku, Hiroshima 734-8553, Japan
- Laboratory for Comprehensive Bioimaging, RIKEN Center for Biosystems Dynamics Research (BDR), 2-2-3 Minatojima-minamimachi, Kobe 650-0047, Japan
| | - Kensuke Sasaki
- Laboratory for Comprehensive Bioimaging, RIKEN Center for Biosystems Dynamics Research (BDR), 2-2-3 Minatojima-minamimachi, Kobe 650-0047, Japan
| | - Hideaki Fujita
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Minami-ku, Hiroshima 734-8553, Japan
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Raman spectroscopy and sciatic functional index (SFI) after low-level laser therapy (LLLT) in a rat sciatic nerve crush injury model. Lasers Med Sci 2022; 37:2957-2971. [PMID: 35503388 DOI: 10.1007/s10103-022-03565-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/23/2022] [Indexed: 10/18/2022]
Abstract
Axonotmesis causes sensorimotor and neurofunctional deficits, and its regeneration can occur slowly or not occur if not treated appropriately. Low-level laser therapy (LLLT) promotes nerve regeneration with the proliferation of myelinating Schwann cells to recover the myelin sheath and the production of glycoproteins for endoneurium reconstruction. This study aimed to evaluate the effects of LLLT on sciatic nerve regeneration after compression injury by means of the sciatic functional index (SFI) and Raman spectroscopy (RS). For this, 64 Wistar rats were divided into two groups according to the length of treatment: 14 days (n = 32) and 21 days (n = 32). These two groups were subdivided into four sub-groups of eight animals each (control 1; control 2; laser 660 nm; laser 808 nm). All animals had surgical exposure to the sciatic nerve, and only control 1 did not suffer nerve damage. To cause the lesion in the sciatic nerve, compression was applied with a Kelly clamp for 6 s. The evaluation of sensory deficit was performed by the painful exteroceptive sensitivity (PES) and neuromotor tests by the SFI. Laser 660 nm and laser 808 nm sub-groups were irradiated daily (100 mW, 40 s, energy density of 133 J/cm2). The sciatic nerve segment was removed for RS analysis. The animals showed accentuated sensory and neurofunctional deficit after injury and their rehabilitation occurred more effectively in the sub-groups treated with 660 nm laser. Control 2 sub-group did not obtain functional recovery of gait. The RS identified sphingolipids (718, 1065, and 1440 cm-1) and collagen (700, 852, 1004, 1270, and 1660 cm-1) as biomolecular characteristics of sciatic nerves. Principal component analysis revealed important differences among sub-groups and a directly proportional correlation with SFI, mainly in the sub-group laser 660 nm treated for 21 days. In the axonotmesis-type lesion model presented herein, the 660 nm laser was more efficient in neurofunctional recovery, and the Raman spectra of lipid and protein properties were attributed to the basic biochemical composition of the sciatic nerve.
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Takemura M, Mochizuki K, Harada Y, Okajima A, Hayakawa M, Dai P, Itoh Y, Tanaka H. Label-free Assessment of the Nascent State of Rat Non-alcoholic Fatty Liver Disease Using Spontaneous Raman Microscopy. Acta Histochem Cytochem 2022; 55:57-66. [PMID: 35509867 PMCID: PMC9043435 DOI: 10.1267/ahc.22-00013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/08/2022] [Indexed: 11/22/2022] Open
Abstract
Spontaneous Raman microscopy, which can detect molecular vibrations in cells and tissues, could be a useful tool for the label-free assessment of non-alcoholic fatty liver disease (NAFLD). However, it is unclear whether it can be used to evaluate the nascent state of NAFLD. To address this, we analyzed the Raman spectra of rat liver tissues in the nascent state of NAFLD upon excitation at 532 nm. Raman and histochemical analyses were performed of liver tissues from rats fed a high-fat, high-cholesterol diet (HFHCD). Raman microscopic imaging analysis of formalin-fixed thin tissue slices showed hepatic steatosis, as revealed by the Raman band at 2,854 cm-1, whereas lipid droplets were not detectable by hematoxylin-eosin staining of images until 3 days after feeding a HFHCD. Raman signals of retinol at 1,588 cm-1 emitted from hepatic stellate cells were distributed alongside hepatic cords; the retinol content rapidly decreased after feeding a HFHCD, whereas hepatic lipid content increased inversely. Raman microscopic analysis of the surface of fresh ex vivo livers enabled early detection of lipid accumulation after a 1-day feeding a HFHCD. In conclusion, spontaneous Raman microscopy can be applied to the label-free evaluation of the nascent state of NAFLD liver tissues.
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Affiliation(s)
- Masashi Takemura
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
- Department of Molecular Gatroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Kentaro Mochizuki
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Yoshinori Harada
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Akira Okajima
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
- Department of Molecular Gatroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Michiyo Hayakawa
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Ping Dai
- Department of Cellular Regenerative Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Yoshito Itoh
- Department of Molecular Gatroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho Kamigyo-ku, Kyoto 602–8566, Japan
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Lauwerends LJ, Abbasi H, Bakker Schut TC, Van Driel PBAA, Hardillo JAU, Santos IP, Barroso EM, Koljenović S, Vahrmeijer AL, Baatenburg de Jong RJ, Puppels GJ, Keereweer S. The complementary value of intraoperative fluorescence imaging and Raman spectroscopy for cancer surgery: combining the incompatibles. Eur J Nucl Med Mol Imaging 2022; 49:2364-2376. [PMID: 35102436 PMCID: PMC9165240 DOI: 10.1007/s00259-022-05705-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/23/2022] [Indexed: 01/09/2023]
Abstract
A clear margin is an important prognostic factor for most solid tumours treated by surgery. Intraoperative fluorescence imaging using exogenous tumour-specific
fluorescent agents has shown particular benefit in improving complete resection of tumour tissue. However, signal processing for fluorescence imaging is complex, and fluorescence signal intensity does not always perfectly correlate with tumour location. Raman spectroscopy has the capacity to accurately differentiate between malignant and healthy tissue based on their molecular composition. In Raman spectroscopy, specificity is uniquely high, but signal intensity is weak and Raman measurements are mainly performed in a point-wise manner on microscopic tissue volumes, making whole-field assessment temporally unfeasible. In this review, we describe the state-of-the-art of both optical techniques, paying special attention to the combined intraoperative application of fluorescence imaging and Raman spectroscopy in current clinical research. We demonstrate how these techniques are complementary and address the technical challenges that have traditionally led them to be considered mutually exclusive for clinical implementation. Finally, we present a novel strategy that exploits the optimal characteristics of both modalities to facilitate resection with clear surgical margins.
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Affiliation(s)
- L J Lauwerends
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - H Abbasi
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, Netherlands.,Center for Optical Diagnostics and Therapy, Department of Dermatology, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - T C Bakker Schut
- Center for Optical Diagnostics and Therapy, Department of Dermatology, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - P B A A Van Driel
- Department of Orthopedic Surgery, Isala Hospital, Zwolle, Netherlands
| | - J A U Hardillo
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - I P Santos
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | | | - S Koljenović
- Department of Pathology, Antwerp University Hospital/Antwerp University, Antwerp, Belgium
| | - A L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Leiden, Netherlands
| | - R J Baatenburg de Jong
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - G J Puppels
- Center for Optical Diagnostics and Therapy, Department of Dermatology, Erasmus MC Cancer Institute, Rotterdam, Netherlands
| | - S Keereweer
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC Cancer Institute, Rotterdam, Netherlands.
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Ogawa K, Oshima Y, Etoh T, Kaisyakuji Y, Tojigamori M, Ohno Y, Shiraishi N, Inomata M. Label-free detection of human enteric nerve system using Raman spectroscopy: A pilot study for diagnosis of Hirschsprung disease. J Pediatr Surg 2021; 56:1150-1156. [PMID: 33838894 DOI: 10.1016/j.jpedsurg.2021.03.040] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 03/12/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Hirschsprung disease (HSCR) is characterized by the absence of an enteric nerve system (ENS). To remove aganglionosis, bowel reconstruction is only a curative treatment. It is mandatory to identify the extent of aganglionosis during surgery. Raman spectroscopy is a nondestructive chemical analysis technique that provides detailed information regarding molecular vibrations. The purpose of this study is to detect the ENS using Raman spectroscopy in the human intestine for diagnosis of HSCR. METHODS The Raman spectra of each layer of the gastrointestinal wall were collected from surgical specimens of the human rectum. Based on collected spectral data, principal component analysis was performed to determine the ENS. Subsequently, the Raman spectra of HSCR sections were analyzed. RESULTS Molecular structures of the gastrointestinal wall were characterized by Raman spectroscopy. Raman spectroscopy could discriminate between ganglion and muscle layers, and the spectra of the border between muscle layers in the aganglionosis were collagen-associated peaks. Either absence on presence of ENS was also confirmed in HSCR material. CONCLUSIONS Label-free detection of the ENS was successfully demonstrated using Raman spectroscopy. Since this is a preliminary study, the strategy which may contribute to differentiate between ganglionic and aganglionic segments using noninvasive techniques in HSCR should be evaluated by prospective studies in near future.
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Affiliation(s)
- Katsuhiro Ogawa
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
| | - Yusuke Oshima
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan; Faculty of Engineering, University of Toyama, 3190 Gofuku, Toyama-city, Toyama 930-8555, Japan.
| | - Tsuyoshi Etoh
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
| | - Yushi Kaisyakuji
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
| | - Manabu Tojigamori
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
| | - Yasuharu Ohno
- Department of Pediatric Surgery, Oita Children's Hospital, 83-7 Katashima, Oita city, Oita 870-0943, Japan
| | - Norio Shiraishi
- Department of Comprehensive Surgery for Community Medicine, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
| | - Masafumi Inomata
- Department of Gastroenterological and Pediatric Surgery, Oita University Faculty of Medicine, 1-1 Hasama, Yufu-city, Oita 879-5593, Japan
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11
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Minamikawa T, Ichimura-Shimizu M, Takanari H, Morimoto Y, Shiomi R, Tanioka H, Hase E, Yasui T, Tsuneyama K. Molecular imaging analysis of microvesicular and macrovesicular lipid droplets in non-alcoholic fatty liver disease by Raman microscopy. Sci Rep 2020; 10:18548. [PMID: 33122711 PMCID: PMC7596489 DOI: 10.1038/s41598-020-75604-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/16/2020] [Indexed: 12/12/2022] Open
Abstract
Predominant evidence of non-alcoholic fatty liver disease (NAFLD) is the accumulation of excess lipids in the liver. A small group with NAFLD may have a more serious condition named non-alcoholic steatohepatitis (NASH). However, there is a lack of investigation of the accumulated lipids with spatial and molecular information. Raman microscopy has the potential to characterise molecular species and structures of lipids based on molecular vibration and can achieve high spatial resolution at the organelle level. In this study, we aim to demonstrate the feasibility of Raman microscopy for the investigation of NAFLD based on the molecular features of accumulated lipids. By applying the Raman microscopy to the liver of the NASH model mice, we succeeded in visualising the distribution of lipid droplets (LDs) in hepatocytes. The detailed analysis of Raman spectra revealed the difference of molecular structural features of the LDs, such as the degree of saturation of lipids in the LDs. We also found that the inhomogeneous distribution of cholesterol in the LDs depending on the histology of lipid accumulation. We visualised and characterised the lipids of NASH model mice by Raman microscopy at organelle level. Our findings demonstrated that the Raman imaging analysis was feasible to characterise the NAFLD in terms of the molecular species and structures of lipids.
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Affiliation(s)
- Takeo Minamikawa
- Department of Post-LED Photonics Research, Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, Japan. .,Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan. .,PRESTO, Japan Science and Technology Agency (JST), 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan. .,Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.
| | - Mayuko Ichimura-Shimizu
- Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.,Department of Pathology and Laboratory Medicine, Graduate School of Medical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8503, Japan
| | - Hiroki Takanari
- Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.,Department of Interdisciplinary Researches for Medicine and Photonics, Institute of Post-LED Photonics, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8503, Japan
| | - Yuki Morimoto
- Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.,Department of Pathology and Laboratory Medicine, Graduate School of Medical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8503, Japan
| | - Ryosuke Shiomi
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan
| | - Hiroki Tanioka
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan
| | - Eiji Hase
- Department of Post-LED Photonics Research, Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, Japan.,Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan
| | - Takeshi Yasui
- Department of Post-LED Photonics Research, Institute of Post-LED Photonics, Tokushima University, 2-1 Minami-Josanjima, Tokushima, 770-8506, Japan.,Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.,Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan
| | - Koichi Tsuneyama
- Research Cluster On "Multi-Scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer", Tokushima University, 2-1 Minami-Josanjima, Tokushima, Tokushima, 770-8506, Japan.,Department of Pathology and Laboratory Medicine, Graduate School of Medical Sciences, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8503, Japan.,Department of Interdisciplinary Researches for Medicine and Photonics, Institute of Post-LED Photonics, Tokushima University, 3-18-15 Kuramoto, Tokushima, Tokushima, 770-8503, Japan
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12
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Zhou H, Simmons CS, Sarntinoranont M, Subhash G. Raman Spectroscopy Methods to Characterize the Mechanical Response of Soft Biomaterials. Biomacromolecules 2020; 21:3485-3497. [PMID: 32833438 DOI: 10.1021/acs.biomac.0c00818] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Raman spectroscopy has been used extensively to characterize the influence of mechanical deformation on microstructure changes in biomaterials. While traditional piezo-spectroscopy has been successful in assessing internal stresses of hard biomaterials by tracking prominent peak shifts, peak shifts due to applied loads are near or below the resolution limit of the spectrometer for soft biomaterials with moduli in the kilo- to mega-Pascal range. In this Review, in addition to peak shifts, other spectral features (e.g., polarized intensity and intensity ratio) that provide quantitative assessments of microstructural orientation and secondary structure in soft biomaterials and their strain dependence are discussed. We provide specific examples for each method and classify sensitive Raman characteristic bands common across natural (e.g., soft tissue) and synthetic (e.g., polymeric scaffolds) soft biomaterials upon mechanical deformation. This Review can provide guidance for researchers aiming to analyze micromechanics of soft tissues and engineered tissue constructs by Raman spectroscopy.
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Affiliation(s)
- Hui Zhou
- Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Chelsey S Simmons
- Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Malisa Sarntinoranont
- Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Ghatu Subhash
- Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611, United States
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13
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Vieira WF, de Magalhães SF, Farias FH, de Thomaz AA, Parada CA. Raman spectroscopy of dorsal root ganglia from streptozotocin-induced diabetic neuropathic rats submitted to photobiomodulation therapy. JOURNAL OF BIOPHOTONICS 2019; 12:e201900135. [PMID: 31265175 DOI: 10.1002/jbio.201900135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/29/2019] [Accepted: 07/01/2019] [Indexed: 06/09/2023]
Abstract
In this study, we used Raman spectroscopy as a new tool to investigate pathological conditions at the level of chemical bond alterations in biological tissues. Currently, there have been no reports on the spectroscopic alterations caused by diabetic neuropathy in the dorsal root ganglia (DRG). DRG are a target for the treatment of neuropathic pain, and the need for more effective therapies is increasing. Photobiomodulation therapy (PBMT) through infrared low-level laser irradiation (904 nm) has shown analgesic effects on the treatment of neuropathy. Thus, the aim of this study was to use Raman spectroscopy to characterize the spectral DRG identities of streptozotocin (STZ)-induced diabetic neuropathic (hyperalgesic) rats and to study the influence of PBMT over such spectra. Characteristic DRG peaks were identified at 2704, 2850, 2885, 2940, 3061 and 3160 cm-1 , whose assignments are CH2 /CH3 symmetric/asymmetric stretches, and C─H vibrations of lipids and proteins. DRG from hyperalgesic rats showed an increased normalized intensity of 2704, 2850, 2885 and 3160 cm-1 . These same peaks had their normalized intensity reduced after PBMT treatment, accompanied by an anti-hyperalgesic effect. Raman spectroscopy was able to diagnose spectral alterations in DRG of hyperalgesic rats and the PBMT reduced the intensity of hyperalgesia and the altered Raman spectra.
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Affiliation(s)
- Willians F Vieira
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Silviane F de Magalhães
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Felipe H Farias
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
| | - André A de Thomaz
- Department of Quantum Electronics, Institute of Physics Gleb Wataghin, State University of Campinas (UNICAMP), Campinas, Brazil
| | - Carlos A Parada
- Laboratory for Pain Studies, Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, Brazil
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14
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Li J, Liang Z, Wang S, Wang Z, Zhang X, Hu X, Wang K, He Q, Bai J. Study on the pathological and biomedical characteristics of spinal cord injury by confocal Raman microspectral imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:148-158. [PMID: 30453190 DOI: 10.1016/j.saa.2018.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/11/2018] [Accepted: 11/12/2018] [Indexed: 05/08/2023]
Abstract
Confocal Raman microspectral imaging (CRMI) in combination with multivariate analysis was used to study pathological progression after spinal cord injury (SCI). By establishing moderate contusion in rat models, ex vivo longitudinal spinal cord tissue sections were prepared for microspectroscopic analysis. Comparative studies were then performed to determine the pathological distinctions among before injury (BI), one day post-injury (1 DPI), seven days post-injury (7 DPI), and 14 days post-injury (14 DPI) groups. Multivariate analysis algorithms, including K-mean cluster analysis (KCA) and principal component analysis (PCA), were conducted to highlight biochemical and structural variations after tissue damage. It is confirmed that typical spectral features and profiles can illustrate some fundamental and significant pathological processes post-injury, such as neuron apoptosis, hemorrhage, demyelination, and chondroitin sulfate proteoglycans (CSPGs) upregulation. Further, by establishing spectra-structure correlations, the reconstructed spectral images revealed some minute and important morphological characteristics following tissue injury, such as glial scar formation surrounding the cavity structure. The observed spectral phenomena also provide a detailed view on relevant pathobiological factors, which are involved in the spread of secondary damage after traumatic spinal cord injury. Our findings not only provide a spectral perspective to the well-known cellular mechanisms underlying SCI, but further provide a sound basis for developing real-time Raman methodologies to evaluate the prognostic factors and therapeutic results of SCI.
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Affiliation(s)
- Jie Li
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China; Department of Physics, Northwest University, Xi'an, Shaanxi, China
| | - Zhuowen Liang
- Department of Orthopaedics, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Shuang Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China.
| | - Zhe Wang
- Department of Orthopaedics, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Xu Zhang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China; Department of Physics, Northwest University, Xi'an, Shaanxi, China
| | - Xueyu Hu
- Department of Orthopaedics, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China
| | - Kaige Wang
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China
| | - Qingli He
- Department of Physics, Northwest University, Xi'an, Shaanxi, China
| | - Jintao Bai
- Institute of Photonics and Photon-Technology, Northwest University, Xi'an, Shaanxi, China
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15
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Santos IP, Barroso EM, Bakker Schut TC, Caspers PJ, van Lanschot CGF, Choi DH, van der Kamp MF, Smits RWH, van Doorn R, Verdijk RM, Noordhoek Hegt V, von der Thüsen JH, van Deurzen CHM, Koppert LB, van Leenders GJLH, Ewing-Graham PC, van Doorn HC, Dirven CMF, Busstra MB, Hardillo J, Sewnaik A, Ten Hove I, Mast H, Monserez DA, Meeuwis C, Nijsten T, Wolvius EB, Baatenburg de Jong RJ, Puppels GJ, Koljenović S. Raman spectroscopy for cancer detection and cancer surgery guidance: translation to the clinics. Analyst 2018; 142:3025-3047. [PMID: 28726868 DOI: 10.1039/c7an00957g] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oncological applications of Raman spectroscopy have been contemplated, pursued, and developed at academic level for at least 25 years. Published studies aim to detect pre-malignant lesions, detect cancer in less invasive stages, reduce the number of unnecessary biopsies and guide surgery towards the complete removal of the tumour with adequate tumour resection margins. This review summarizes actual clinical needs in oncology that can be addressed by spontaneous Raman spectroscopy and it provides an overview over the results that have been published between 2007 and 2017. An analysis is made of the current status of translation of these results into clinical practice. Despite many promising results, most of the applications addressed in scientific studies are still far from clinical adoption and commercialization. The main hurdles are identified, which need to be overcome to ensure that in the near future we will see the first Raman spectroscopy-based solutions being used in routine oncologic diagnostic and surgical procedures.
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Affiliation(s)
- Inês P Santos
- Center for Optical Diagnostics and Therapy, Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
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16
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Label-free Evaluation of Myocardial Infarct in Surgically Excised Ventricular Myocardium by Raman Spectroscopy. Sci Rep 2018; 8:14671. [PMID: 30279495 PMCID: PMC6168494 DOI: 10.1038/s41598-018-33025-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/20/2018] [Indexed: 12/20/2022] Open
Abstract
Understanding the viability of the ischemic myocardial tissue is a critical issue in determining the appropriate surgical procedure for patients with chronic heart failure after myocardial infarction (MI). Conventional MI evaluation methods are; however, preoperatively performed and/or give an indirect information of myocardial viability such as shape, color, and blood flow. In this study, we realize the evaluation of MI in patients undergoing cardiac surgery by Raman spectroscopy under label-free conditions, which is based on intrinsic molecular constituents related to myocardial viability. We identify key signatures of Raman spectra for the evaluation of myocardial viability by evaluating the infarct border zone myocardium that were excised from five patients under surgical ventricular restoration. We also obtain a prediction model to differentiate the infarcted myocardium from the non-infarcted myocardium by applying partial least squares regression-discriminant analysis (PLS-DA) to the Raman spectra. Our prediction model enables identification of the infarcted tissues and the non-infarcted tissues with sensitivities of 99.98% and 99.92%, respectively. Furthermore, the prediction model of the Raman images of the infarct border zone enabled us to visualize boundaries between these distinct regions. Our novel application of Raman spectroscopy to the human heart would be a useful means for the detection of myocardial viability during surgery.
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17
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de Almeida Melo Maciel Mangueira M, Maciel Mangueira N, Pereira Gama Filho O, Moysés de Oliveira M, Albuquerque Heluy R, Silveira L, Caparelli Moniz de Aragão Dáquer E. Biochemical changes in injured sciatic nerve of rats after low-level laser therapy (660 nm and 808 nm) evaluated by Raman spectroscopy. Lasers Med Sci 2018; 34:525-535. [PMID: 30244400 DOI: 10.1007/s10103-018-2627-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 08/27/2018] [Indexed: 12/26/2022]
Abstract
The aim of this study was to identify biochemical changes in sciatic nerve (SN) after crush injury and low-level laser therapy (LLLT) with 660 nm and 808 nm by Raman spectroscopy (RS) analysis. A number of 32 Wistar rats were used, divided into four groups (control 1, control 2, LASER 660 nm, and LASER 808 nm). All animals underwent surgical procedure of the SN and groups control 2, LASER 660 nm, and LASER 808 nm were submitted to SN crush damage (axonotmesis). The LLLT in the groups LASER 660 nm and LASER 808 nm was applied daily for 21 consecutive days (100 mW, 30 s, 133 J/cm2 fluence). The hind paw was removed and the SN was dissected and positioned on an aluminum support to collect dispersive Raman spectra (830 nm excitation, 30 s accumulation). To estimate the biochemical changes in the SN associated with LLLT, the principal component analysis (PCA) was applied. The Raman spectra of the sciatic nerve fragments showed peaks of the major biochemical components of the nerve, especially sphingolipids, phospholipids, glycoproteins, and collagen. The spectral features identified in some of the principal component loading vectors are referred to the biochemical elements present on the SN and were increased in the groups treated with LLLT, mainly lipids (sphingo and phospholipids) and proteins (collagen)-constituents of the myelin sheath. The RS was effective in identifying the biochemical differences in the SN after the crush injury, and LASER 660 nm was more efficient than the LASER 808 nm in cell proliferation and repair of the injured SN.
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Affiliation(s)
| | - Nilton Maciel Mangueira
- Department of Morphology, Universidade Federal do Maranhão - UFMA, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966, Bacanga, São Luís, Maranhão, 65080-805, Brazil.
| | - Ozimo Pereira Gama Filho
- Department of Morphology, Universidade Federal do Maranhão - UFMA, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966, Bacanga, São Luís, Maranhão, 65080-805, Brazil
| | - Márcio Moysés de Oliveira
- Department of Morphology, Universidade Federal do Maranhão - UFMA, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966, Bacanga, São Luís, Maranhão, 65080-805, Brazil
| | - Renato Albuquerque Heluy
- Department of Morphology, Universidade Federal do Maranhão - UFMA, Cidade Universitária Dom Delgado, Av. dos Portugueses, 1966, Bacanga, São Luís, Maranhão, 65080-805, Brazil
| | - Landulfo Silveira
- Center for Innovation, Technology and Education - CITE, Universidade Anhembi Morumbi - UAM, Parque Tecnológico de São José dos Campos, Estrada Dr. Altino Bondensan, 500, São José dos Campos, São Paulo, 12247-016, Brazil
| | - Egas Caparelli Moniz de Aragão Dáquer
- Physiological Sciences Department, Roberto Alcântara Gomes Biology Institute, Rio de Janeiro State University, Avenida Professor Manuel de Abreu, 444/ 5° andar, Vila Isabel, Rio de Janeiro, Rio de Janeiro, 20550-170, Brazil
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18
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Hou Y, Zhang W, Li S, Wang Z, Zhong H, Liu Z, Guo Z. Investigating the autophagy pathway in silver@gold core-shell nanoparticles-treated cells using surface-enhanced Raman scattering. Analyst 2018; 143:3677-3685. [PMID: 29975376 DOI: 10.1039/c8an00405f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Previous studies have shown that nanoparticles can induce autophagy, and the main approach for investigating autophagy induced by nanoparticles is via traditional methods such as TEM and biochemical assay. These methods measurements suffer from the disadvantages of complicated experimental processes, cell destruction, as well as lack of characterization of individual stages of the autophagy pathway. Surface-enhanced Raman scattering (SERS) has been extensively used in biological applications. With the combination of SERS and chemometric methods, such as principal component analysis-linear discriminant analysis (PCA-LDA), identification and distribution mapping of endosomes and lysosomes in the endocytosis of Au nanoparticles has been achieved by segregating the spectra from complex SERS data sets in the previous study. In this study, silver@gold core-shell nanoparticles (Ag@Au NPs) were synthesized by reduction of gold ions on the surface of the silver nanoparticles, and the autophagy induced by Ag@Au NPs was studied with Ag@Au NPs serving both as an autophagy inducer and as a high-performance SERS substrate. Pro-survival autophagy induced by Ag@Au NPs was proved by the western blot assay, flow cytometry and fluorescent staining. Furthermore, the autophagy pathway in Ag@Au NPs-treated cells was first elucidated by SERS combined with a modified reference-based PCA-LDA methodology. This study provides a feasible way of using SERS to elucidate the autophagy pathway induced by nanoparticles.
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Affiliation(s)
- Yuqing Hou
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
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19
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Kumamoto Y, Harada Y, Takamatsu T, Tanaka H. Label-free Molecular Imaging and Analysis by Raman Spectroscopy. Acta Histochem Cytochem 2018; 51:101-110. [PMID: 30083018 PMCID: PMC6066646 DOI: 10.1267/ahc.18019] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 05/25/2018] [Indexed: 01/06/2023] Open
Abstract
Raman scattering of a cell conveys the intrinsic information inherent to chemical structures of biomolecules. The spectroscopy of Raman scattering, or Raman spectroscopy, allows label-free and quantitative molecular sensing of a biological sample in situ without disruption. For the last five decades Raman spectroscopy has been widely utilized in biological research fields. However, it is just within the latest decade that molecular imaging and discrimination of living cells and tissues have become practically available. Here we overview recent progress in Raman spectroscopy and its application to life sciences. We discuss imaging of functional molecules in living cells and tissues; e.g., cancer cells and ischemic or infarcted hearts, together with a number of studies in the biomedical fields. We further explore comprehensive understandings of a complex spectrum by multivariate analysis for, e.g., accurate peripheral nerve detection, and characterization of the histological differences in the healing process of myocardial infarct. Although limitations still remain, e.g., weakness of the scattering intensity and practical difficulty in comprehensive molecular analysis, continuous progress in related technologies will allow wider use of Raman spectroscopy for biomedical applications.
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Affiliation(s)
- Yasuaki Kumamoto
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine
| | - Yoshinori Harada
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine
| | - Tetsuro Takamatsu
- Department of Medical Photonics, Kyoto Prefectural University of Medicine
| | - Hideo Tanaka
- Department of Pathology and Cell Regulation, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine
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20
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Hirose K, Aoki T, Furukawa T, Fukushima S, Niioka H, Deguchi S, Hashimoto M. Coherent anti-Stokes Raman scattering rigid endoscope toward robot-assisted surgery. BIOMEDICAL OPTICS EXPRESS 2018; 9:387-396. [PMID: 29552380 PMCID: PMC5854045 DOI: 10.1364/boe.9.000387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 12/16/2017] [Accepted: 12/18/2017] [Indexed: 05/16/2023]
Abstract
Label-free visualization of nerves and nervous plexuses will improve the preservation of neurological functions in nerve-sparing robot-assisted surgery. We have developed a coherent anti-Stokes Raman scattering (CARS) rigid endoscope to distinguish nerves from other tissues during surgery. The developed endoscope, which has a tube with a diameter of 12 mm and a length of 270 mm, achieved 0.91% image distortion and 8.6% non-uniformity of CARS intensity in the whole field of view (650 μm diameter). We demonstrated CARS imaging of a rat sciatic nerve and visualization of the fine structure of nerve fibers.
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Affiliation(s)
- K. Hirose
- Graduate School of Engineering Science, Osaka University, Osaka,
Japan
| | - T. Aoki
- Graduate School of Engineering Science, Osaka University, Osaka,
Japan
| | - T. Furukawa
- Faculty of Engineering, Yokohama National University, Yokohama,
Japan
| | - S. Fukushima
- Graduate School of Engineering Science, Osaka University, Osaka,
Japan
| | - H. Niioka
- Graduate School of Engineering Science, Osaka University, Osaka,
Japan
| | - S. Deguchi
- Graduate School of Engineering Science, Osaka University, Osaka,
Japan
| | - M. Hashimoto
- Graduate School of Information Science and Technology, Hokkaido University, Hokkaido,
Japan
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21
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Rapid and accurate peripheral nerve imaging by multipoint Raman spectroscopy. Sci Rep 2017; 7:845. [PMID: 28405007 PMCID: PMC5429797 DOI: 10.1038/s41598-017-00995-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/17/2017] [Indexed: 12/22/2022] Open
Abstract
Raman spectroscopy allows label-free, minimally invasive, and accurate detection of peripheral nerves. However, the conventional Raman imaging technique is time-consuming when measuring a large area of a sample. Establishing a method for rapidly acquiring spatial distribution of a bundle of peripheral nerve fibers is an essential step for Raman spectroscopy towards application in clinical surgery. Here we present a multipoint Raman spectroscopic technique for rapid peripheral nerve imaging. In only 5 seconds, spectra at 32 points situated on ex vivo rat peripheral nerve bundles and adjoining connective tissues were acquired. Principal component regression and discriminant analysis of spectra revealed that the sensitivity, specificity and accuracy for nerve detection were 85.8%, 96.0%, and 90.8%, respectively. Of 158 peripheral nerves, 152 (96.2%) showed ratio of the number of nerve-positive prediction points to the total measurement points being 0.4 or larger, whereas 119 (99.2%) connective tissues among 120 showed ratio smaller than 0.4. Based on the ratio and a bright-field image of the sample, accurate visualization of peripheral nerves was implemented. The results indicated that the multipoint Raman spectroscopic technique is capable of rapid and accurate peripheral nerve imaging.
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22
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Label-free detection of myocardial ischaemia in the perfused rat heart by spontaneous Raman spectroscopy. Sci Rep 2017; 7:42401. [PMID: 28186163 PMCID: PMC5301243 DOI: 10.1038/srep42401] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 01/09/2017] [Indexed: 12/20/2022] Open
Abstract
Raman spectroscopy, which identifies intrinsic molecular constituents, has a potential for determining myocardial viability under label-free conditions. However, its suitability for evaluating myocardial ischaemia is undetermined. Focusing on cytochromes, i.e., representative molecules reflecting mitochondrial activity, we tested whether Raman spectroscopy is applicable for evaluating myocardial ischaemia especially during early ischaemic phase. We obtained spontaneous Raman spectra of the subepicardial myocardium in the Langendorff-perfused rat heart upon 532-nm excitation before and during the “stopped-flow,” global ischaemia. Semi-quantitative values of the peak intensities at 750 and 1127 cm−1, which reflect reduced cytochromes c and b, increased immediately and progressively after induction of the stopped flow, indicating progressive reduction of the mitochondrial respiration. Such spectral changes emerged before the loss of 1) mitochondrial membrane potentials measured by the fluorescence intensity of tetramethyl rhodamine ethyl ester or 2) staining of the triphenyl tetrazolium chloride dye in the myocardium. The progressive increases in the Raman peaks by stopped flow were significantly retarded by ischaemic preconditioning. Sequential measurements of the peak intensities at 750 and 1127 cm−1 enabled early detection of the myocardial ischaemia based on the mitochondrial functions. These data suggest that Raman spectroscopy offers the potential to evaluate acute ischaemic heart under label-free conditions.
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