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Olbrich K, Setkowicz Z, Kawon K, Czyzycki M, Janik-Olchawa N, Carlomagno I, Aquilanti G, Chwiej J. Vibrational spectroscopy methods for investigation of the animal models of glioblastoma multiforme. Spectrochim Acta A Mol Biomol Spectrosc 2023; 303:123230. [PMID: 37586277 DOI: 10.1016/j.saa.2023.123230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/26/2023] [Accepted: 08/01/2023] [Indexed: 08/18/2023]
Abstract
Glioblastoma multiforme (GBM) is the most common and devastating primary brain tumor among adults. It is highly lethal disease, as only 25% of patients survive longer than 1 year and only 5% more than 5 years from the diagnosis. To search for the new, more effective methods of treatment, the understanding of mechanisms underlying the process of tumorigenesis is needed. The new light on this problem may be shed by the analysis of biochemical anomalies of tissues affected by tumor growth. Therefore, in the present work, we applied the Fourier transform infrared (FTIR) and Raman microspectroscopy to evaluate changes in the distribution and structure of biomolecules appearing in the rat brain as a result of glioblastoma development. In turn, synchrotron X-ray fluorescence microscopy was utilized to determine the elemental anomalies appearing in the nervous tissue. To achieve the assumed goals of the study animal models of GBM were used. The rats were subjected to the intracranial implantation of glioma cells with different degree of invasiveness. For spectroscopic investigation brain slices taken from the area of cancer cells administration were used. The obtained results revealed, among others, the decrease content of lipids and compounds containing carbonyl groups, compositional and structural changes of proteins as well as abnormalities in the distribution of low atomic number elements within the region of tumor.
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Affiliation(s)
- Karolina Olbrich
- Faculty of Physics and Applied Computer Science, AGH University of Krakow, Krakow, Poland
| | - Zuzanna Setkowicz
- Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Kamil Kawon
- Faculty of Physics and Applied Computer Science, AGH University of Krakow, Krakow, Poland
| | - Mateusz Czyzycki
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Natalia Janik-Olchawa
- Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | | | | | - Joanna Chwiej
- Faculty of Physics and Applied Computer Science, AGH University of Krakow, Krakow, Poland.
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2
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Zhang S, Vasudevan S, Tan SPH, Olivo M. Fiber optic probe-based ATR-FTIR spectroscopy for rapid breast cancer detection: A pilot study. J Biophotonics 2023; 16:e202300199. [PMID: 37496212 DOI: 10.1002/jbio.202300199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/11/2023] [Accepted: 07/25/2023] [Indexed: 07/28/2023]
Abstract
Breast cancer diagnosis is crucial for timely treatment and improved outcomes. This paper proposes a novel approach for rapid breast cancer diagnosis using optical fiber probe-based attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy from 750 to 4000 cm-1 . The technique enables direct analysis of tissue samples, eliminating the need for microtome sectioning and staining, thus saving time and resources. By capturing molecular fingerprint information, various machine-learning models were used to analyze the spectroscopic data to classify cancerous and non-cancerous tissues accurately. Comparing deparaffinized and paraffinized samples reveals the impact of sample preparation and experimental methods. The study demonstrates a strong correlation between the cancerous nature of a sample and its ATR-FTIR spectrum, suggesting its potential for breast cancer diagnosis (sensitivity of 74.2% and specificity of 78.3%). The proposed approach holds promise for integration into clinical operations, providing a rapid method for preliminary breast cancer diagnosis.
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Affiliation(s)
- Shuyan Zhang
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Swetha Vasudevan
- Department of Biomedical Engineering, National University of Singapore, Singapore
| | - Sonia Peng Hwee Tan
- Department of Biomedical Engineering, National University of Singapore, Singapore
| | - Malini Olivo
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore
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3
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Maitra I, Morais CLM, Lima KMG, Ashton KM, Bury D, Date RS, Martin FL. Attenuated Total Reflection Fourier-Transform Infrared Spectral Discrimination in Human Tissue of Oesophageal Transformation to Adenocarcinoma. J Pers Med 2023; 13:1277. [PMID: 37623527 PMCID: PMC10455976 DOI: 10.3390/jpm13081277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023] Open
Abstract
This study presents ATR-FTIR (attenuated total reflectance Fourier-transform infrared) spectral analysis of ex vivo oesophageal tissue including all classifications to oesophageal adenocarcinoma (OAC). The article adds further validation to previous human tissue studies identifying the potential for ATR-FTIR spectroscopy in differentiating among all classes of oesophageal transformation to OAC. Tissue spectral analysis used principal component analysis quadratic discriminant analysis (PCA-QDA), successive projection algorithm quadratic discriminant analysis (SPA-QDA), and genetic algorithm quadratic discriminant analysis (GA-QDA) algorithms for variable selection and classification. The variables selected by SPA-QDA and GA-QDA discriminated tissue samples from Barrett's oesophagus (BO) to OAC with 100% accuracy on the basis of unique spectral "fingerprints" of their biochemical composition. Accuracy test results including sensitivity and specificity were determined. The best results were obtained with PCA-QDA, where tissues ranging from normal to OAC were correctly classified with 90.9% overall accuracy (71.4-100% sensitivity and 89.5-100% specificity), including the discrimination between normal and inflammatory tissue, which failed in SPA-QDA and GA-QDA. All the models revealed excellent results for distinguishing among BO, low-grade dysplasia (LGD), high-grade dysplasia (HGD), and OAC tissues (100% sensitivities and specificities). This study highlights the need for further work identifying potential biochemical markers using ATR-FTIR in tissue that could be utilised as an adjunct to histopathological diagnosis for early detection of neoplastic changes in susceptible epithelium.
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Affiliation(s)
- Ishaan Maitra
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK
| | - Camilo L. M. Morais
- Institute of Chemistry, Biological Chemistry and Chemometrics, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (C.L.M.M.); (K.M.G.L.)
- Center for Education, Science and Technology of the Inhamuns Region, State University of Ceará, Tauá 63660-000, Brazil
| | - Kássio M. G. Lima
- Institute of Chemistry, Biological Chemistry and Chemometrics, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil; (C.L.M.M.); (K.M.G.L.)
| | - Katherine M. Ashton
- Lancashire Teaching Hospitals NHS Foundation Trust, Royal Preston Hospital, Preston PR2 9HT, UK; (K.M.A.); (R.S.D.)
| | - Danielle Bury
- Department of Cellular Pathology, Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool FY3 8NR, UK;
| | - Ravindra S. Date
- Lancashire Teaching Hospitals NHS Foundation Trust, Royal Preston Hospital, Preston PR2 9HT, UK; (K.M.A.); (R.S.D.)
| | - Francis L. Martin
- Department of Cellular Pathology, Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool FY3 8NR, UK;
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4
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Matys J, Turska-Szewczuk A, Gieroba B, Kurzylewska M, Pękala-Safińska A, Sroka-Bartnicka A. Evaluation of Proteomic and Lipidomic Changes in Aeromonas-Infected Trout Kidney Tissue with the Use of FT-IR Spectroscopy and MALDI Mass Spectrometry Imaging. Int J Mol Sci 2022; 23:ijms232012551. [PMID: 36293421 PMCID: PMC9604335 DOI: 10.3390/ijms232012551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022] Open
Abstract
Aeromonas species are opportunistic bacteria causing a vast spectrum of human diseases, including skin and soft tissue infections, meningitis, endocarditis, peritonitis, gastroenteritis, and finally hemorrhagic septicemia. The aim of our research was to indicate the molecular alterations in proteins and lipids profiles resulting from Aeromonas sobria and A. salmonicida subsp. salmonicida infection in trout kidney tissue samples. We successfully applied FT-IR (Fourier transform infrared) spectroscopy and MALDI-MSI (matrix-assisted laser desorption/ionization mass spectrometry imaging) to monitor changes in the structure and compositions of lipids, secondary conformation of proteins, and provide useful information concerning disease progression. Our findings indicate that the following spectral bands’ absorbance ratios (spectral biomarkers) can be used to discriminate healthy tissue from pathologically altered tissue, for example, lipids (CH2/CH3), amide I/amide II, amide I/CH2 and amide I/CH3. Spectral data obtained from 10 single measurements of each specimen indicate numerous abnormalities concerning proteins, lipids, and phospholipids induced by Aeromonas infection, suggesting significant disruption of the cell membranes. Moreover, the increase in the content of lysolipids such as lysophosphosphatidylcholine was observed. The results of this study suggest the application of both methods MALDI-MSI and FT-IR as accurate methods for profiling biomolecules and identifying biochemical changes in kidney tissue during the progression of Aeromonas infection.
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Affiliation(s)
- Joanna Matys
- Department of Biopharmacy, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
- Correspondence: (J.M.); (A.S.-B.)
| | - Anna Turska-Szewczuk
- Department of Genetics and Microbiology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Barbara Gieroba
- Independent Unit of Spectroscopy and Chemical Imaging, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Maria Kurzylewska
- Department of Genetics and Microbiology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Agnieszka Pękala-Safińska
- Department of Preclinical Sciences and Infectious Diseases, Poznan University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland
| | - Anna Sroka-Bartnicka
- Department of Genetics and Microbiology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19, 20-033 Lublin, Poland
- Independent Unit of Spectroscopy and Chemical Imaging, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
- Correspondence: (J.M.); (A.S.-B.)
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Senigagliesi B, Bedolla DE, Birarda G, Zanetti M, Lazzarino M, Vaccari L, Parisse P, Casalis L. Subcellular elements responsive to the biomechanical activity of triple-negative breast cancer-derived small extracellular vesicles. Biomol Concepts 2022; 13:322-333. [PMID: 36482512 DOI: 10.1515/bmc-2022-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
Triple-negative breast cancer (TNBC) stands out for its aggressive, fast spread, and highly metastatic behavior and for being unresponsive to the classical hormonal therapy. It is considered a disease with a poor prognosis and limited treatment options. Among the mechanisms that contribute to TNBC spreading, attention has been recently paid to small extracellular vesicles (sEVs), nano-sized vesicles that by transferring bioactive molecules to recipient cells play a crucial role in the intercellular communication among cancer, healthy cells, and tumor microenvironment. In particular, TNBC-derived sEVs have been shown to alter proliferation, metastasis, drug resistance, and biomechanical properties of target cells. To shed light on the molecular mechanisms involved in sEVs mediation of cell biomechanics, we investigated the effects of sEVs on the main subcellular players, i.e., cell membrane, cytoskeleton, and nuclear chromatin organization. Our results unveiled that TNBC-derived sEVs are able to promote the formation and elongation of cellular protrusions, soften the cell body, and induce chromatin decondensation in recipient cells. In particular, our data suggest that chromatin decondensation is the main cause of the global cell softening. The present study added new details and unveiled a novel mechanism of activity of the TNBC-derived sEVs, providing information for the efficient translation of sEVs to cancer theranostics.
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Affiliation(s)
- Beatrice Senigagliesi
- Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italy.,Elettra-Sincrotrone Trieste S.C.p.A., Trieste, Italy
| | - Diana E Bedolla
- Elettra-Sincrotrone Trieste S.C.p.A., Trieste, Italy.,Area Science Park, Padriciano 99, Trieste, Italy
| | | | - Michele Zanetti
- Istituto Officina dei Materiali Consiglio Nazionale delle Ricerche, CNR-IOM, Trieste, Italy.,Department of Physics, University of Trieste, Trieste, Italy
| | - Marco Lazzarino
- Istituto Officina dei Materiali Consiglio Nazionale delle Ricerche, CNR-IOM, Trieste, Italy
| | - Lisa Vaccari
- Elettra-Sincrotrone Trieste S.C.p.A., Trieste, Italy
| | - Pietro Parisse
- Elettra-Sincrotrone Trieste S.C.p.A., Trieste, Italy.,Istituto Officina dei Materiali Consiglio Nazionale delle Ricerche, CNR-IOM, Trieste, Italy
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6
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K MG, Barzegari S, Hajian P, Zham H, Mirzaei HR, Shirazi FH. Diagnosis of normal and malignant human gastric tissue samples by FTIR spectra combined with mathematical models. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129493] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Perevoschikov S, Kaydanov N, Ermatov T, Bibikova O, Usenov I, Sakharova T, Bocharnikov A, Skibina J, Artyushenko V, Gorin D. Light guidance up to 6.5 µm in borosilicate soft glass hollow-core microstructured optical waveguides. Opt Express 2020; 28:27940-27950. [PMID: 32988076 DOI: 10.1364/oe.399410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
Limited operating bandwidth originated from strong absorption of glass materials in the infrared (IR) spectral region has hindered the potential applications of microstructured optical waveguide (MOW)-based sensors. Here, we demonstrate multimode waveguide regime up to 6.5 µm for the hollow-core (HC) MOWs drawn from borosilicate soft glass. Effective light guidance in central HC (diameter ∼240 µm) was observed from 0.4 to 6.5 µm despite high waveguide losses (0.4 and 1 dB/cm in near- and mid-IR, respectively). Additional optimization of the waveguide structure can potentially extend its operating range and decrease transmission losses, offering an attractive alternative to tellurite and chalcogenide-based fibers. Featuring the transparency in mid-IR, HC MOWs are promising candidates for the creation of MOW-based sensors for chemical and biomedical applications.
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8
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Chrabaszcz K, Kaminska K, Augustyniak K, Kujdowicz M, Smeda M, Jasztal A, Stojak M, Marzec KM, Malek K. Tracking Extracellular Matrix Remodeling in Lungs Induced by Breast Cancer Metastasis. Fourier Transform Infrared Spectroscopic Studies. Molecules 2020; 25:E236. [PMID: 31935974 DOI: 10.3390/molecules25010236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 12/25/2019] [Accepted: 01/03/2020] [Indexed: 11/17/2022] Open
Abstract
This work focused on a detailed assessment of lung tissue affected by metastasis of breast cancer. We used large-area chemical scanning implemented in Fourier transform infrared (FTIR) spectroscopic imaging supported with classical histological and morphological characterization. For the first time, we differentiated and defined biochemical changes due to metastasis observed in the lung parenchyma, atelectasis, fibrous, and muscle cells, as well as bronchi ciliate cells, in a qualitative and semi-quantitative manner based on spectral features. The results suggested that systematic extracellular matrix remodeling with the progress of the metastasis process evoked a decrease in the fraction of the total protein in atelectasis, fibrous, and muscle cells, as well as an increase of fibrillar proteins in the parenchyma. We also detected alterations in the secondary conformations of proteins in parenchyma and atelectasis and changes in the level of hydroxyproline residues and carbohydrate moieties in the parenchyma. The results indicate the usability of FTIR spectroscopy as a tool for the detection of extracellular matrix remodeling, thereby enabling the prediction of pre-metastatic niche formation.
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9
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Chrabaszcz K, Meyer T, Bae H, Schmitt M, Jasztal A, Smeda M, Stojak M, Popp J, Malek K, Marzec KM. Comparison of standard and HD FT-IR with multimodal CARS/TPEF/SHG/FLIMS imaging in the detection of the early stage of pulmonary metastasis of murine breast cancer. Analyst 2020; 145:4982-4990. [DOI: 10.1039/d0an00762e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The comparison of the potential of FT-IR in standard and high definition modes with multimodal CARS/TPEF/SHG/FLIMS imaging for detection of the early stage of pulmonary metastasis of murine breast cancer is presented.
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Affiliation(s)
- Karolina Chrabaszcz
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Tobias Meyer
- Leibniz-Institute of Photonic Technology e.V
- Member of Leibniz Health Technologies
- 07745 Jena
- Germany
- Institute of Physical Chemistry and Abbe Center of Photonics
| | - Hyeonsoo Bae
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- 07745 Jena
- Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- 07745 Jena
- Germany
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Marta Smeda
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Marta Stojak
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
| | - Jürgen Popp
- Leibniz-Institute of Photonic Technology e.V
- Member of Leibniz Health Technologies
- 07745 Jena
- Germany
- Institute of Physical Chemistry and Abbe Center of Photonics
| | - Kamilla Malek
- Faculty of Chemistry
- Jagiellonian University
- 30-387 Krakow
- Poland
- Jagiellonian Centre for Experimental Therapeutics
| | - Katarzyna M. Marzec
- Jagiellonian Centre for Experimental Therapeutics
- Jagiellonian University
- 30-384 Krakow
- Poland
- Centre for Medical Genomics OMICRON
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10
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Morais CLM, Paraskevaidi M, Cui L, Fullwood NJ, Isabelle M, Lima KMG, Martin-Hirsch PL, Sreedhar H, Trevisan J, Walsh MJ, Zhang D, Zhu YG, Martin FL. Standardization of complex biologically derived spectrochemical datasets. Nat Protoc 2019; 14:1546-1577. [PMID: 30953040 DOI: 10.1038/s41596-019-0150-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 02/12/2019] [Indexed: 12/17/2022]
Abstract
Spectroscopic techniques such as Fourier-transform infrared (FTIR) spectroscopy are used to study interactions of light with biological materials. This interaction forms the basis of many analytical assays used in disease screening/diagnosis, microbiological studies, and forensic/environmental investigations. Advantages of spectrochemical analysis are its low cost, minimal sample preparation, non-destructive nature and substantially accurate results. However, an urgent need exists for repetition and validation of these methods in large-scale studies and across different research groups, which would bring the method closer to clinical and/or industrial implementation. For this to succeed, it is important to understand and reduce the effect of random spectral alterations caused by inter-individual, inter-instrument and/or inter-laboratory variations, such as variations in air humidity and CO2 levels, and aging of instrument parts. Thus, it is evident that spectral standardization is critical to the widespread adoption of these spectrochemical technologies. By using calibration transfer procedures, in which the spectral response of a secondary instrument is standardized to resemble the spectral response of a primary instrument, different sources of variation can be normalized into a single model using computational-based methods, such as direct standardization (DS) and piecewise direct standardization (PDS); therefore, measurements performed under different conditions can generate the same result, eliminating the need for a full recalibration. Here, we have constructed a protocol for model standardization using different transfer technologies described for FTIR spectrochemical applications. This is a critical step toward the construction of a practical spectrochemical analysis model for daily routine analysis, where uncertain and random variations are present.
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Affiliation(s)
- Camilo L M Morais
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK.
| | - Maria Paraskevaidi
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK.
| | - Li Cui
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Nigel J Fullwood
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, UK
| | - Martin Isabelle
- Spectroscopy Products Division, Renishaw plc., New Mills, Wotton-under-Edge, UK
| | - Kássio M G Lima
- Institute of Chemistry, Biological Chemistry and Chemometrics, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Pierre L Martin-Hirsch
- Department of Obstetrics and Gynaecology, Lancashire Teaching Hospitals NHS Foundation, Preston, UK
| | - Hari Sreedhar
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, USA
| | - Júlio Trevisan
- Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, São Paulo, Brazil
| | - Michael J Walsh
- Department of Pathology, University of Illinois at Chicago, Chicago, IL, USA
| | - Dayi Zhang
- School of Environment, Tsinghua University, Beijing, China
| | - Yong-Guan Zhu
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Francis L Martin
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, UK.
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11
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Kar S, Katti DR, Katti KS. Fourier transform infrared spectroscopy based spectral biomarkers of metastasized breast cancer progression. Spectrochim Acta A Mol Biomol Spectrosc 2019; 208:85-96. [PMID: 30292907 DOI: 10.1016/j.saa.2018.09.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/28/2018] [Accepted: 09/29/2018] [Indexed: 06/08/2023]
Abstract
Breast cancer is a global health issue and the second leading cause of cancer death in women. Breast cancer tends to migrate to bone and causes bone metastases which is ultimately the cause of death. Here, we report the use of FTIR to identify spectral biomarkers of cancer progression on 3D in vitro model of breast cancer bone metastasis. Our results indicate that the following spectral biomarkers can monitor cancer progression, for example, lipids (CH2 asymmetric/CH2 symmetric stretch), Amide I/Amide II, and RNA/DNA. Principal component analysis also confirmed the involvement of protein, lipids and nucleic acids in cancer progression on sequential culture. The collective observations from this study suggest successful application of FTIR as a non-invasive and accurate method to identify biochemical changes in cancer cells during the progression of breast cancer bone metastasis.
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Affiliation(s)
- Sumanta Kar
- Department of Civil and Environmental Engineering, CIE 201, NDSU, Fargo, ND 58104, United States of America
| | - Dinesh R Katti
- Department of Civil and Environmental Engineering, CIE 201, NDSU, Fargo, ND 58104, United States of America
| | - Kalpana S Katti
- Department of Civil and Environmental Engineering, CIE 201, NDSU, Fargo, ND 58104, United States of America.
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12
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Old OJ, Lloyd GR, Nallala J, Isabelle M, Almond LM, Shepherd NA, Kendall CA, Shore AC, Barr H, Stone N. Rapid infrared mapping for highly accurate automated histology in Barrett's oesophagus. Analyst 2018; 142:1227-1234. [PMID: 27713951 DOI: 10.1039/c6an01871h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Barrett's oesophagus (BE) is a premalignant condition that can progress to oesophageal adenocarcinoma. Endoscopic surveillance aims to identify potential progression at an early, treatable stage, but generates large numbers of tissue biopsies. Fourier transform infrared (FTIR) mapping was used to develop an automated histology tool for detection of BE and Barrett's neoplasia in tissue biopsies. 22 oesophageal tissue samples were collected from 19 patients. Contiguous frozen tissue sections were taken for pathology review and FTIR imaging. 45 mid-IR images were measured on an Agilent 620 FTIR microscope with an Agilent 670 spectrometer. Each image covering a 140 μm × 140 μm region was measured in 5 minutes, using a 1.1 μm2 pixel size and 64 scans per pixel. Principal component fed linear discriminant analysis was used to build classification models based on spectral differences, which were then tested using leave-one-sample-out cross validation. Key biochemical differences were identified by their spectral signatures: high glycogen content was seen in normal squamous (NSQ) tissue, high glycoprotein content was observed in glandular BE tissue, and high DNA content in dysplasia/adenocarcinoma samples. Classification of normal squamous samples versus 'abnormal' samples (any stage of Barrett's) was performed with 100% sensitivity and specificity. Neoplastic Barrett's (dysplasia or adenocarcinoma) was identified with 95.6% sensitivity and 86.4% specificity. Highly accurate pathology classification can be achieved with FTIR measurement of frozen tissue sections in a clinically applicable timeframe.
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Affiliation(s)
- O J Old
- Gloucestershire Hospitals NHS Foundation Trust, Gloucester, GL1 3NN, UK
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13
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Chrabaszcz K, Jasztal A, Smęda M, Zieliński B, Blat A, Diem M, Chlopicki S, Malek K, Marzec KM. Label-free FTIR spectroscopy detects and visualizes the early stage of pulmonary micrometastasis seeded from breast carcinoma. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3574-3584. [DOI: 10.1016/j.bbadis.2018.08.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/06/2018] [Accepted: 08/17/2018] [Indexed: 12/18/2022]
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Tozar T, Andrei IR, Costin R, Pirvulescu R, Pascu ML. Case series about ex vivo identification of squamous cell carcinomas by laser-induced autofluorescence and Fourier transform infrared spectroscopy. Lasers Med Sci 2018; 33:861-869. [PMID: 29380083 DOI: 10.1007/s10103-018-2445-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 01/12/2018] [Indexed: 01/10/2023]
Abstract
An ex vivo case series aimed at identification of normal laryngeal tissue from laryngeal epidermoid squamous keratinized carcinoma by measuring laser-induced autofluorescence (LIAF) and Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectra is presented. The case series results were obtained for paired samples extracted from three patients (exclusion: macroscopic changes of normal vocal cord observed during surgery; surgical intervention on vocal cord, treated only with chemotherapy or radiotherapy for carcinoma; inclusion: men, aged 57-68, non-smokers). For LIAF analysis, a 375-nm picosecond pulsed laser diode with 31 MHz pulse repetition rate, 100 ps full-time width at half-maximum, and average power 0.49 μW was used. LIAF and FTIR-ATR spectra show noticeable differences between normal and malignant tissues. LIAF spectra differed in shape of emitted band, peak position, and band relative intensity of the two kinds of samples, evidencing hypsochromic shift and mean fluorescence intensity decrease of (75.42 ± 3)% in malignant tissue with respect to the normal one. The lack of 1745 cm-1 band in FTIR-ATR spectra for malignant tissues could be considered an important indicative of the presence of this kind of tissue; moreover, it resulted a greater contribution of lipids and proteins in normal tissue and of collagen in malignant tissue. Penetration depth of the evanescent wave was about 2 μm at an angle of 42°. The two spectroscopic methods are complementary, are applicable for real-time measurements, and may enhance cancer detection and diagnostics. Results presented in this study evidence the potential of the two methods for future in vivo studies.
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Affiliation(s)
- Tatiana Tozar
- National Institute for Laser, Plasma and Radiation Physics, Magurele, Ilfov, Romania
| | - Ionut Relu Andrei
- National Institute for Laser, Plasma and Radiation Physics, Magurele, Ilfov, Romania
| | - Romeo Costin
- Carol Davila Central University Emergency Military Hospital, Bucharest, Romania
| | - Ruxandra Pirvulescu
- Ophthalmology Clinic, University of Medicine and Pharmacy "Carol Davila", Emergency University Hospital, Bucharest, Romania
| | - Mihail Lucian Pascu
- National Institute for Laser, Plasma and Radiation Physics, Magurele, Ilfov, Romania. .,Faculty of Physics, University of Bucharest, Magurele, Ilfov, Romania.
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Mehrotra R, Tyagi G, Charak S, Ray B, Kadayaprath G, Chaturvedi H, Mukherjee U, Abrari A. Biospectroscopic analysis of human breast cancer tissue: probing infrared signatures to comprehend biochemical alterations. J Biomol Struct Dyn 2017; 36:761-766. [DOI: 10.1080/07391102.2017.1298469] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ranjana Mehrotra
- CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Gunjan Tyagi
- CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Sonika Charak
- CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Bhumika Ray
- CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - Geeta Kadayaprath
- Department of Surgical Oncology, Max Super Speciality Hospital, Press Enclave Road, Saket, New Delhi 110017, India
| | - Harit Chaturvedi
- Department of Surgical Oncology, Max Super Speciality Hospital, Press Enclave Road, Saket, New Delhi 110017, India
| | - Urmi Mukherjee
- Department of Histopathology, Max Super Speciality Hospital, Press Enclave Road, Saket, New Delhi 110017, India
| | - Andleeb Abrari
- Department of Histopathology, Max Super Speciality Hospital, Press Enclave Road, Saket, New Delhi 110017, India
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das Chagas E Silva de Carvalho LF, Pereira TM, Magrini TD, Cavalcante ASR, da Silva Martinho H, Almeida JD. Optical diagnosis of actinic cheilitis by infrared spectroscopy. Photodiagnosis Photodyn Ther 2016; 16:27-34. [PMID: 27491855 DOI: 10.1016/j.pdpdt.2016.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/28/2016] [Accepted: 07/30/2016] [Indexed: 01/28/2023]
Abstract
Actinic cheilitis (AC) is considered a potentially malignant disorder of the lip. Biomolecular markers study is important to understand malignant transformation into squamous cell carcinoma. Fourier transform infra red (FT-IR) spectroscopy was used to analyze AC in this study. OBJECTIVES The aim of the study was to evaluate if FT-IR spectral regions of nucleic acids and collagen can help in early diagnosis of malignant transformation. METHODS Tissues biopsies of 14 patients diagnosed with AC and 14 normal tissues were obtained. FT-IR spectra were measured at five different points resulting in 70 spectra of each. Analysis of Principal components analysis (PCA) and linear discrimination analysis (LDA) model were also used. In order to verify the statistical difference in the spectra, Mann-Whitney U test was performed in each variable (wavenumber) with p-value <0.05. RESULTS After the Mann-Whitney U test the vibrational modes of CO (Collagen 1), PO2 (Nucleic Acids) and CO asymmetric (Triglycerides/Lipids) were observed as a possible spectral biomarker. These bands were chosen because they represent the vibrational modes related to collagen and DNA, which are supposed to be changed in AC samples. Based on the PCA-LDA results, the predictive model corresponding to the area under the curve was 0.91 for the fingerprint region and 0.83 for the high wavenumber region, showing the greater accuracy of the test. CONCLUSIONS FT-IR changes in collagen and nucleic acids could be used as molecular biomarkers for malignant transformation.
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Affiliation(s)
| | - Thiago Martini Pereira
- Instituto de Ciência e Tecnologia, Universidade Federal de São Paulo, São José dos campos, São Paulo, Brazil
| | - Taciana Depra Magrini
- Laboratory of Biomedical Vibrational Spectroscopy, Universidade do Vale do Paraíba, São José dos Campos, São Paulo, Brazil
| | - Ana Sueli Rodrigues Cavalcante
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), São José dos Campos, São Paulo, Brazil
| | | | - Janete Dias Almeida
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, Univ Estadual Paulista (UNESP), São José dos Campos, São Paulo, Brazil
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Jusman Y, Mat Isa NA, Ng SC, Hasikin K, Abu Osman NA. Automated cervical precancerous cells screening system based on Fourier transform infrared spectroscopy features. J Biomed Opt 2016; 21:75005. [PMID: 27403606 DOI: 10.1117/1.jbo.21.7.075005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 06/15/2016] [Indexed: 06/06/2023]
Abstract
Fourier transform infrared (FTIR) spectroscopy technique can detect the abnormality of a cervical cell that occurs before the morphological change could be observed under the light microscope as employed in conventional techniques. This paper presents developed features extraction for an automated screening system for cervical precancerous cell based on the FTIR spectroscopy as a second opinion to pathologists. The automated system generally consists of the developed features extraction and classification stages. Signal processing techniques are used in the features extraction stage. Then, discriminant analysis and principal component analysis are employed to select dominant features for the classification process. The datasets of the cervical precancerous cells obtained from the feature selection process are classified using a hybrid multilayered perceptron network. The proposed system achieved 92% accuracy.
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Affiliation(s)
- Yessi Jusman
- University of Malaya, Department of Biomedical Engineering, Faculty of Engineering, 50603 Kuala Lumpur, MalaysiabUniversitas Abdurrab, Department of Informatics Engineering, Faculty of Engineering, Pekanbaru, 28291 Riau, Indonesia
| | - Nor Ashidi Mat Isa
- University of Science Malaysia, School of Electrical and Electronic Engineering, Engineering Campus, Nibong Tebal, 14300 Penang, Malaysia
| | - Siew-Cheok Ng
- University of Malaya, Department of Biomedical Engineering, Faculty of Engineering, 50603 Kuala Lumpur, Malaysia
| | - Khairunnisa Hasikin
- University of Malaya, Department of Biomedical Engineering, Faculty of Engineering, 50603 Kuala Lumpur, Malaysia
| | - Noor Azuan Abu Osman
- University of Malaya, Department of Biomedical Engineering, Faculty of Engineering, 50603 Kuala Lumpur, Malaysia
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Junhom C, Weerapreeyakul N, Tanthanuch W, Thumanu K. FTIR microspectroscopy defines early drug resistant human hepatocellular carcinoma (HepG2) cells. Exp Cell Res 2016; 340:71-80. [DOI: 10.1016/j.yexcr.2015.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 12/01/2015] [Accepted: 12/15/2015] [Indexed: 01/10/2023]
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D'inca H, Namur J, Ghegediban SH, Wassef M, Pascale F, Laurent A, Manfait M. Automated Quantification of Tumor Viability in a Rabbit Liver Tumor Model after Chemoembolization Using Infrared Imaging. Am J Pathol 2015; 185:1877-88. [PMID: 25979795 DOI: 10.1016/j.ajpath.2015.03.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/12/2015] [Accepted: 03/16/2015] [Indexed: 01/09/2023]
Abstract
The rabbit VX2 tumor is a fast-growing carcinoma model commonly used to study new therapeutic devices, such as catheter-based therapies for patients with inoperable hepatocellular carcinoma. The evaluation of tumor viability after such locoregional therapies is essential to directing hepatocellular carcinoma management. We used infrared microspectroscopy for the automatic characterization and quantification of the VX2 liver tumor viability after drug-eluting beads transarterial chemoembolization (DEB-TACE). The protocol consisted of K-means clustering followed by principal component analysis (PCA) and linear discriminant analysis (LDA). The K-means clustering was used to classify the spectra from the infrared images of control or treated tumors and to build a database of many tissue spectra. On the basis of this reference library, the PCA-LDA analysis was used to build a predictive model to identify and quantify automatically tumor viability on unknown tissue sections. For the DEB group, the LDA model determined that the surface of tumor necrosis represented 91.6% ± 8.9% (control group: 33.1% ± 19.6%; Mann-Whitney P = 0.0004) and the viable tumor 2.6% ± 4% (control group: 62.2% ± 15.2%; Mann-Whitney P = 0.0004). Tissue quantification measurements correlated well with tumor necrosis (r = 0.827, P < 0.0001) and viable tumor (r = 0.840, P < 0.0001). Infrared imaging and PCA-LDA analysis could be helpful for easily assessing tumor viability.
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Affiliation(s)
- Hadrien D'inca
- Median Unit, University of Reims Champagne-Ardenne, Centre National de la Recherche Scientifique, Matrice Extracellulaire et Dynamique Cellulaire, Reims, France.
| | | | - Saida Homayra Ghegediban
- ArchimMed SARL, Jouy en Josas, France; Department of Pathology, Lariboisiere Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Michel Wassef
- ArchimMed SARL, Jouy en Josas, France; Department of Pathology, Lariboisiere Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Florentina Pascale
- Research Center for Interventional Imagery, Assistance Publique-Hôpitaux de Paris and National Institute for Agricultural Research, Jouy-En-Josas, France
| | - Alexandre Laurent
- Research Center for Interventional Imagery, Assistance Publique-Hôpitaux de Paris and National Institute for Agricultural Research, Jouy-En-Josas, France; Department of Neuroradiology, Hôpital Lariboisère, Assistance Publique-Hôpitaux de Paris, Paris, France; Materials and Complex Systems Laboratory, Centre National de la Recherche Scientifique, Paris, France
| | - Michel Manfait
- Median Unit, University of Reims Champagne-Ardenne, Centre National de la Recherche Scientifique, Matrice Extracellulaire et Dynamique Cellulaire, Reims, France
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Valiyambath Krishnan M, Vadakke Matham M, Krishnan S, Parasuraman P, Joseph J, Bhakoo K. Red, green, and blue gray-value shift-based approach to whole-field imaging for tissue diagnostics. J Biomed Opt 2012; 17:076010. [PMID: 22894493 DOI: 10.1117/1.jbo.17.7.076010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Identification of abnormal pathology in situ remains one of the challenges of medicine. The interpretation of tissue conditions relies mainly on optical assessment, which can be difficult due to inadequate visual differences or poor color delineation. We propose a methodology to identify regions of abnormal tissue in a targeted area based on red, green, blue (RGB) shift analysis employing a simple CCD color camera and light-emitting diode illumination in a whole-field-imaging scheme. The concept involves analysis of RGB components in an image with respect to a reference set of RGB values under different illumination wavelengths. The magnitude of the gray value shift is estimated by calculating the Euclidean distance between their normalized RGB coordinates. The shift values obtained using these concepts are thereafter used to construct pseudo-colored images with high contrast, enabling easy identification of abnormal areas in the tissue. Images processed from experiments conducted with excised Wistar rat colon sample (lightly doped with Alexafluor 488) and with simulated tumor (cancer cell pellet placed on colon) showed clear localization of tumor region. This proposed approach and methodology is expected to find potential applications for the in vivo diagnosis of disease.
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Li X, Li QB, Zhang GJ, Xu YZ, Sun XJ, Shi JS, Zhang YF, Wu JG. Identification of colitis and cancer in colon biopsies by Fourier Transform Infrared spectroscopy and chemometrics. ScientificWorldJournal 2012; 2012:936149. [PMID: 22645472 PMCID: PMC3356748 DOI: 10.1100/2012/936149] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 12/25/2011] [Indexed: 12/27/2022] Open
Abstract
Cancer is a disease that does great harms to the health of human beings. FT-IR spectroscopy could identify variability at the molecular level in biological specimens. It is a rapid and noninvasive method, which could be used intraoperatively to modify surgical procedures. The aim of this paper is to identify and separate cancer from colitis in endoscopic colon biopsies through the use of FT-IR spectroscopy. A total of 88 endoscopic colon samples, including 41 cases of colitis and 47 cases of colon cancer, were obtained. Specimens were placed on an ATR accessory linked to FT-IR spectrometer with a MCT detector for greater stability and sensitivity. Later, specimens were sent for the histological examination as the reference in the spectral analysis. 41 colitis and 47 cancer specimens were compared. Spectra preprocessed with smoothing and normalization were used for discrimination analysis. PCA was processed to simplify the spectrum data set. Naive Bayes classifier model was constructed for diagnostic classification. Leave-one-out cross-validation method was utilized to assess the discrimination results. The sensitivity of FT-IR detection for cancer achieves 97.6%. The results showed that colon cancer could be distinguished from colitis with high accuracy using FT-IR spectroscopy and chemometrics.
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Affiliation(s)
- Xiang Li
- College of Instrument Science and Opto-Electronics Engineering, Beihang University, Beijing 100083, China
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Bergholt MS, Zheng W, Lin K, Ho KY, Teh M, Yeoh KG, So JB, Huang Z. In vivo diagnosis of esophageal cancer using image-guided Raman endoscopy and biomolecular modeling. Technol Cancer Res Treat 2011; 10:103-12. [PMID: 21381788 DOI: 10.7785/tcrt.2012.500185] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The aim of this work was to evaluate the biochemical foundation and clinical merit of multimodal image-guided Raman endoscopy technique for real-time in vivo diagnosis of cancer in the esophagus during clinical endoscopic examinations. A novel fiber-optic Raman endoscopy system was utilized for in vivo esophageal Raman measurements at 785 nm laser excitation within 0.5 second under the multimodal wide-field endoscopic imaging (white light reflectance (WLR) imaging, narrow-band imaging (NBI) and autofluorescence imaging (AFI) guidance. A total of 75 esophageal tissue sites from 27 patients were measured, in which 42 in vivo Raman spectra were from normal tissues and 33 in vivo Raman spectra were from malignant tumors as confirmed by histopathology. The biomolecular modeling (non-negativity-constrained least-squares minimization (NNCLSM) utilizing six basis reference spectra from the representative biochemicals (i.e., actin, collagen, DNA, histones, triolein and glycogen) were employed to estimate the biochemical compositions of esophageal tissue. The resulting diagnostically significant fit coefficients were further utilized through linear discriminant analysis (LDA) and leave-one tissue site-out, cross validation method to develop diagnostic algorithms for esophageal cancer diagnosis. High-quality in vivo Raman spectra in the range of 800-1800 cm-1 can be acquired from normal and cancerous esophageal mucosa in real-time under multimodal endoscopic imaging guidance. Esophageal cancer tissue showed distinct Raman signals mainly associated with cell proliferation, lipid reduction, abnormal nuclear activity and neovasculation. The fit coefficients for actin, DNA, histones, triolein, and glycogen were found to be most significant for construction of the LDA diagnostic model, giving rise to an accuracy of 96.0% (i.e., sensitivity of 97.0% and specificity of 95.2%) for in vivo diagnosis of esophageal cancer. This study demonstrates that multimodal image-guided Raman endoscopy technique in conjunction with biomolecular modeling has promising potential for the real-time, in vivo diagnosis and detection of esophageal cancer during clinical endoscopic examination.
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Affiliation(s)
- M S Bergholt
- Optical Bioimaging Laboratory, Department of Bioengineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576
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Anbarasan R, Dhanalakshmi V. Melt functionalization of LDPE with thio ester, amino ester, and hydroxy ester by thermolysis method-An FTIR study. J Appl Polym Sci 2011. [DOI: 10.1002/app.34318] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Sahu RK, Mordechai S. Spectral signatures of colonic malignancies in the mid-infrared region: from basic research to clinical applicability. Future Oncol 2011; 6:1653-67. [PMID: 21062162 DOI: 10.2217/fon.10.120] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The process of carcinogenesis in the colon progresses through several overlapping stages, making the evaluation process challenging, as well as subjective. Owing to the complexity of colonic tissues and the search for a technique that is rapid and foolproof for precise grading and evaluation of biopsies, many spectroscopic techniques have been evaluated in the past few decades for their efficiency and clinical compatibility. Fourier-transform infrared spectroscopy, being quantitative and objective, has the capacity for automation and relevance to cancer diagnosis. This article highlights investigations on the application of Fourier-transform infrared spectroscopy (particularly microscopy) in colon cancer diagnosis and parallel developments in data analysis techniques for the characterization of spectral signatures of malignant tissues in the colon.
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Affiliation(s)
- Ranjit K Sahu
- Center for Autoimmune & Musculoskeletal Disease, Feinstein Institute for Medical Research, Manhasset, NY, USA
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Mehrotra R, Tyagi G, Jangir DK, Dawar R, Gupta N. Analysis of ovarian tumor pathology by Fourier Transform Infrared Spectroscopy. J Ovarian Res 2010; 3:27. [PMID: 21176143 PMCID: PMC3017039 DOI: 10.1186/1757-2215-3-27] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Accepted: 12/21/2010] [Indexed: 01/13/2023] Open
Abstract
Background Ovarian cancer is the second most common cancer among women and the leading cause of death among gynecologic malignancies. In recent years, infrared (IR) spectroscopy has gained attention as a simple and inexpensive method for the biomedical study of several diseases. In the present study infrared spectra of normal and malignant ovarian tissues were recorded in the 650 cm-1 to 4000 cm-1 region. Methods Post surgical tissue samples were taken from the normal and tumor sections of the tissue. Fourier Transform Infrared (FTIR) data on twelve cases of ovarian cancer with different grades of malignancy from patients of different age groups were analyzed. Results Significant spectral differences between the normal and the ovarian cancerous tissues were observed. In particular changes in frequency and intensity in the spectral region of protein, nucleic acid and lipid vibrational modes were observed. It was evident that the sample-to-sample or patient-to-patient variations were small and the spectral differences between normal and diseased tissues were reproducible. Conclusion The measured spectroscopic features, which are the spectroscopic fingerprints of the tissues, provided the important differentiating information about the malignant and normal tissues. The findings of this study demonstrate the possible use of infrared spectroscopy in differentiating normal and malignant ovarian tissues.
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Affiliation(s)
- Ranjana Mehrotra
- Optical Radiation Standards, National Physical Laboratory, (Council of Scientific and Industrial Research, New Delhi), Dr K S Krishnan Marg, New Delhi 110012, India.
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Lewis PD, Lewis KE, Ghosal R, Bayliss S, Lloyd AJ, Wills J, Godfrey R, Kloer P, Mur LAJ. Evaluation of FTIR spectroscopy as a diagnostic tool for lung cancer using sputum. BMC Cancer 2010; 10:640. [PMID: 21092279 PMCID: PMC3000851 DOI: 10.1186/1471-2407-10-640] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 11/23/2010] [Indexed: 01/27/2023] Open
Abstract
Background Survival time for lung cancer is poor with over 90% of patients dying within five years of diagnosis primarily due to detection at late stage. The main objective of this study was to evaluate Fourier transform infrared spectroscopy (FTIR) as a high throughput and cost effective method for identifying biochemical changes in sputum as biomarkers for detection of lung cancer. Methods Sputum was collected from 25 lung cancer patients in the Medlung observational study and 25 healthy controls. FTIR spectra were generated from sputum cell pellets using infrared wavenumbers within the 1800 to 950 cm-1 "fingerprint" region. Results A panel of 92 infrared wavenumbers had absorbances significantly different between cancer and normal sputum spectra and were associated with putative changes in protein, nucleic acid and glycogen levels in tumours. Five prominent significant wavenumbers at 964 cm-1, 1024 cm-1, 1411 cm-1, 1577 cm-1 and 1656 cm-1 separated cancer spectra from normal spectra into two distinct groups using multivariate analysis (group 1: 100% cancer cases; group 2: 92% normal cases). Principal components analysis revealed that these wavenumbers were also able to distinguish lung cancer patients who had previously been diagnosed with breast cancer. No patterns of spectra groupings were associated with inflammation or other diseases of the airways. Conclusions Our results suggest that FTIR applied to sputum might have high sensitivity and specificity in diagnosing lung cancer with potential as a non-invasive, cost-effective and high-throughput method for screening. Trial Registration ClinicalTrials.gov: NCT00899262
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Wang J, Zhang J, Wu W, Duan X, Wang S, Zhang M, Zhou S, Mo F, Xu Y, Shi J, Wu J. Evaluation of gallbladder lipid level during carcinogenesis by an infrared spectroscopic method. Dig Dis Sci 2010; 55:2670-5. [PMID: 19957036 DOI: 10.1007/s10620-009-1045-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2009] [Accepted: 10/27/2009] [Indexed: 12/29/2022]
Abstract
BACKGROUND Fourier transform infrared (FTIR) spectroscopy is sensitive to the molecular composition of tissue and has the potential to identify premalignant tissue. Our previous studies found that the lipids band of FTIR decreased in malignant tissues compared to normal tissue but increased in the cell line. AIM To investigate the change of lipids during carcinogenesis in the gallbladder by FTIR spectroscopy. METHODS The tissue from 12 malignant samples and 10 normal samples together with their corresponding tissue plasma membrane and gallbladder cancer cell lines were observed by FTIR. RESULTS Specific changes of lipids were observed in the FTIR spectral features of tissue, cell, and plasma membrane. The CH3 stretching band at 2,957 cm(-1) and the CH2 stretching bands at 2,853 cm(-1) decreased in the malignant tissue but increased in the tissue plasma membrane; the C-O stretching band at 1,740 cm(-1) disappeared in the malignant tissue but significantly increased in the tissue plasma membrane. The intensity of these bands all increased in the cancer cell line. The ratio of intensity (I) of 1,460 cm(-1)/1,398 cm(-1) was smaller in malignant tissue and the tissue plasma membrane. CONCLUSIONS Lipids were increased in the plasma membrane during carcinogenesis of the gallbladder; the ratio of intensity (I) 1,460 cm(-1)/1,398 cm(-1) could be a marker to diagnose cancer by FTIR.
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Mackanos MA, Contag CH. Fiber-optic probes enable cancer detection with FTIR spectroscopy. Trends Biotechnol 2010; 28:317-23. [DOI: 10.1016/j.tibtech.2010.04.001] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 03/24/2010] [Accepted: 04/05/2010] [Indexed: 12/16/2022]
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Anbarasan R, Dhanalakshmi V. Melt grafting of metal salts onto LLDPE backbone--an FTIR study. Spectrochim Acta A Mol Biomol Spectrosc 2010; 76:37-44. [PMID: 20308012 DOI: 10.1016/j.saa.2010.02.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 02/12/2010] [Accepted: 02/26/2010] [Indexed: 05/29/2023]
Abstract
The melt graft functionalization of metal di(meth)acrylates onto linear low density poly(ethylene) (LLDPE) at 160 degrees C under inert atmosphere is reported here. The post melt grafting FTIR-RI method was used to find out the % grafting of metal salts onto LLDPE backbone. Further, DSC, TGA and HRTEM techniques were introduced to explain the results. A plausible reaction mechanism was proposed.
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Affiliation(s)
- R Anbarasan
- Department of Mechanical Engineering, MEMS Thermal Control Lab, National Taiwan University, Taipei-10617, Taiwan, ROC. anbu
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Anbarasan R, Dhanalakshmi V, Rajasulochana K, Sudha M, Jayalakshmi T, Anusuya M. Synthesis and characterizations of calcium di(meth)acrylate divinyl monomers and melt surface graft functionalization with linear low density poly(ethylene). J Appl Polym Sci 2010. [DOI: 10.1002/app.31257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Anbarasan R, Kanchana S, Gayathri S, Jayalakshmi T, Dhanalakshmi V. Melt functionalization of linear low-density poly(ethylene) with succinimide andN-hydroxy succinimide by thermolysis method. J Appl Polym Sci 2010. [DOI: 10.1002/app.31120] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Beljebbar A, Dukic S, Amharref N, Manfait M. Screening of biochemical/histological changes associated to C6 glioma tumor development by FTIR/PCA imaging. Analyst 2010; 135:1090-7. [DOI: 10.1039/b922184k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Arasi AY, Jeyakumari JJL, Sundaresan B, Dhanalakshmi V, Anbarasan R. The structural properties of poly(aniline)--analysis via FTIR spectroscopy. Spectrochim Acta A Mol Biomol Spectrosc 2009; 74:1229-1234. [PMID: 19875328 DOI: 10.1016/j.saa.2009.09.042] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 09/07/2009] [Accepted: 09/25/2009] [Indexed: 05/28/2023]
Abstract
Aniline was polymerized under different experimental conditions like variation in time, temperature, monomer and concentration of initiators. Relative intensity of the benzenoid and quinonoid forms were estimated and correlated with poly(aniline) (PANI) structure. TGA counseled the thermal stability of poly(aniline). Through FTIR study, the structure of poly(aniline) was recognized. Comparison of polymerized aniline with two different initiators was done.
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Affiliation(s)
- A Yelil Arasi
- Department of Physics, Kamaraj College of Engineering and Technology, Virudhunagar-626001, Tamil Nadu, India
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Parthasarathy V, Sundaresan B, Dhanalakshmi V, Anbarasan R. Melt surface grafting of HDPE with mercaptoesters by thermolysis method. POLYM ENG SCI 2009. [DOI: 10.1002/pen.21546] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mackanos MA, Hargrove JT, Du CB, Friedland S, Soetikno RM, Contag CH, Wolters R, Arroyo MR, Crawford JM, Wang TD. Use of an endoscope-compatible probe to detect colonic dysplasia with Fourier transform infrared spectroscopy. J Biomed Opt 2009; 14:044006. [PMID: 19725718 PMCID: PMC3232016 DOI: 10.1117/1.3174387] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Fourier transform infrared (FTIR) spectroscopy is sensitive to the molecular composition of tissue and has the potential to identify premalignant tissue (dysplasia) as an adjunct to endoscopy. We demonstrate collection of mid-infrared absorption spectra with a silver halide (AgCl(0.4)Br(0.6)) optical fiber and use spectral preprocessing to identify optimal subranges that classify colonic mucosa as normal, hyperplasia, or dysplasia. We collected spectra (n=83) in the 950 to 1800 cm(-1) regime on biopsy specimens obtained from human subjects (n=37). Subtle differences in the magnitude of the absorbance peaks at specific wave numbers were observed. The best double binary algorithm for distinguishing normal-versus-dysplasia and hyperplasia-versus-dysplasia was determined from an exhaustive search of spectral intervals and preprocessing techniques. Partial least squares discriminant analysis was used to classify the spectra using a leave-one-subject-out cross-validation strategy. The results were compared with histology reviewed independently by two gastrointestinal pathologists. The optimal thresholds identified resulted in an overall sensitivity, specificity, accuracy, and positive predictive value of 96%, 92%, 93%, and 82%, respectively. These results indicated that mid-infrared absorption spectra collected remotely with an optical fiber can be used to identify colonic dysplasia with high accuracy, suggesting that continued development of this technique for the early detection of cancer is promising.
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Affiliation(s)
- Mark A. Mackanos
- Department of Pediatrics, Microbiology and Immunology, Stanford University, Stanford, CA 94305
- Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305
| | | | - Christine B. Du
- Department of Medicine, Division of Gastroenterology, Stanford University, Stanford, CA 94305
| | | | | | - Christopher H. Contag
- Department of Pediatrics, Microbiology and Immunology, Stanford University, Stanford, CA 94305
| | | | - May R. Arroyo
- University of Florida College of Medicine, Department of Pathology, P.O. Box 100275, Gainesville, FL 32610
| | - James M. Crawford
- University of Florida College of Medicine, Department of Pathology, P.O. Box 100275, Gainesville, FL 32610
| | - Thomas D. Wang
- Department of Medicine, Division of Gastroenterology, Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109
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Kendall C, Isabelle M, Bazant-Hegemark F, Hutchings J, Orr L, Babrah J, Baker R, Stone N. Vibrational spectroscopy: a clinical tool for cancer diagnostics. Analyst 2009; 134:1029-45. [PMID: 19475128 DOI: 10.1039/b822130h] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Vibrational spectroscopy techniques have demonstrated potential to provide non-destructive, rapid, clinically relevant diagnostic information. Early detection is the most important factor in the prevention of cancer. Raman and infrared spectroscopy enable the biochemical signatures from biological tissues to be extracted and analysed. In conjunction with advanced chemometrics such measurements can contribute to the diagnostic assessment of biological material. This paper also illustrates the complementary advantage of using Raman and FTIR spectroscopy technologies together. Clinical requirements are increasingly met by technological developments which show promise to become a clinical reality. This review summarises recent advances in vibrational spectroscopy and their impact on the diagnosis of cancer.
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Affiliation(s)
- Catherine Kendall
- Biophotonics Research Unit, Leadon House, Gloucestershire Hospitals NHS Foundation Trust, Gloucester, UK GL1 3NN
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Abstract
BACKGROUND Gallstone analysis is important in determining the possible etiology of stone formation and the pathophysiology of cholelithiasis. Physical analysis using Fourier transform infrared spectroscopy (FT-IR), compared to chemical analysis, requires minimal sample volume, shows uniform sensitivity and specificity for all components and provides quantitative results with greater reproducibility. We studied the characteristics and distribution of gallstones using FT-IR in addition to the risk factors for gallstone formation in Korean patients. A better understanding of the mechanism underlying stone formation may help prevent gallstone development. METHODS Physical analysis of gallstones in 490 patients who underwent cholecystectomy was carried out using the FT-IR system 2000 (Perkin-Elmer Co.) and Spectrum software (Perkin-Elmer Co.). Visual inspection of the size, color, consistency and surface of the stones was compared with the physical characteristics. Clinical, demographic and laboratory findings were evaluated and compared with the gallstone components. RESULTS The FT-IR evaluation showed that most gallstones were composed of a single component (84.1%); cholesterol was the most commonly observed element among the major components (50%, 245/490). Morphological classification according to color, consistency and surface was different from the FT-IR composition analysis. There were significant differences in the components based on age, obesity, education level and the presence of diabetes mellitus. CONCLUSIONS The results of this study show that physical analysis of gallstones with FT-IR provides important information on stone composition, distribution and risk factors. These study results will help improve our understanding of the pathophysiology of gallstone disease in the Korean population, where there is a high frequency of hepatobiliary disorders.
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Affiliation(s)
- Eun-Hyung Yoo
- Department of Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abstract
The rapid developments in the field of infrared spectroscopy in the past decade have demonstrated a potential for disease diagnosis using noninvasive technologies. Several earlier studies have highlighted the advantage of using infrared spectroscopy both in the near- and mid-infrared regions for diagnostic purposes at clinical levels. The areas of focus have been the distinction of premalignant and malignant cells and tissues from their normal state using specific parameters obtained from Fourier transform infrared spectra, making it a rapid and reagent-free method. While it still requires pilot studies and designed clinical trials to ensure the applicability of such systems for cancer diagnosis, substantial progress has been made in incorporating advances in computational methods into the system to increase the sensitivity of the entire setup, making it an objective and sensitive technique suitable for automation to suit the demands of the medical community. The development of fiber-optics systems for infrared spectroscopy have further opened up new and modern avenues in medical diagnosis at various levels of cells, tissues and organs under laboratory and clinical conditions.
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Affiliation(s)
- R K Sahu
- Ben Gurion University, Department of Physics and the Cancer Research Institute, Beer-Sheva, Israel.
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Amharref N, Beljebbar A, Dukic S, Venteo L, Schneider L, Pluot M, Manfait M. Discriminating healthy from tumor and necrosis tissue in rat brain tissue samples by Raman spectral imaging. Biochim Biophys Acta 2007; 1768:2605-15. [PMID: 17761139 DOI: 10.1016/j.bbamem.2007.06.032] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 06/15/2007] [Accepted: 06/15/2007] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to investigate molecular changes associated with glioma tissues by Raman microspectroscopy in order to develop its use in clinical practice. Spectroscopic markers obtained from C6 glioma tissues were compared to conventional histological and histochemical techniques. Cholesterol and phospholipid contents were highest in corpus callosum and decreased gradually towards the cortex surface as well as in the tumor. Two different necrotic areas have been identified: a fully necrotic zone characterized by the presence of plasma proteins and a peri-necrotic area with a high lipid content. This result was confirmed by Nile Red staining. Additionally, one structure was detected in the periphery of the tumor. Invisible with histopathological hematoxylin and eosin staining, it was revealed by immunohistochemical Ki-67 and MT1-MMP staining used to visualize the proliferative and invasive activities of glioma, respectively. Hierarchical cluster analysis on the only cluster averaged spectra showed a clear distinction between normal, tumoral, necrotic and edematous tissues. Raman microspectroscopy can discriminate between healthy and tumoral brain tissue and yield spectroscopic markers associated with the proliferative and invasive properties of glioblastoma. Development of in vivo Raman spectroscopy could thus accurately define tumor margins, identify tumor remnants, and help in the development of novel therapies for glioblastoma.
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Affiliation(s)
- Nadia Amharref
- Unité MéDIAN, CNRS-UMR 6142, UFR de Pharmacie, IFR 53, Université de Reims Champagne-Ardenne, 51 rue Cognacq-Jay, 51096 Reims Cedex, France
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Li QB, Xu Z, Zhang NW, Zhang L, Wang F, Yang LM, Wang JS, Zhou S, Zhang YF, Zhou XS, Shi JS, Wu JG. In vivo and in situ detection of colorectal cancer using Fourier transform infrared spectroscopy. World J Gastroenterol 2005; 11:327-30. [PMID: 15637737 PMCID: PMC4205330 DOI: 10.3748/wjg.v11.i3.327] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: Real-time and rapid identification of the malignant tissue can be performed during or before surgical operation. Here we aimed to detect in vivo and in situ colorectal cancer by using Fourier transform infrared (FTIR) spectroscopy and fiber-optic technology.
METHODS: A total of five patients with large intestine cancer were detected in vivo and in situ. Of them, three cases of colon cancer and one case of cecum cancer were detected intraoperatively and in vivo by using a FTIR spectrometer during surgical operation, and one case of rectum cancer was explored non-invasively and in vivo before the surgical operation. Normal and malignant colorectal tissues were detected in vivo and in situ using FTIR spectroscopy on the basis of fundamental studies.
RESULTS: There were significant differences between FTIR spectra of normal and malignant colorectal tissues detected in vivo and in situ. Experimental results revealed that the spectral characteristics of normal and malignant tissues found in vivo and in situ were similar to those obtained from in vitro measurement in our previous fundamental research.
CONCLUSION: FTIR fiber-optic attenuated total reflectance (ATR) spectroscopy can identify in situ and in vivo colorectal cancer. FTIR spectroscopic method with fiber optics is a non-invasive, rapid, accurate and in vivo cancer detection technique in clinical diagnosis.
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Affiliation(s)
- Qing-Bo Li
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Li QB, Sun XJ, Xu YZ, Yang LM, Zhang YF, Weng SF, Shi JS, Wu JG. Diagnosis of gastric inflammation and malignancy in endoscopic biopsies based on Fourier transform infrared spectroscopy. Clin Chem 2005; 51:346-50. [PMID: 15637129 DOI: 10.1373/clinchem.2004.037986] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Fourier transform infrared (FT-IR) spectroscopy is an effective tool for investigation of chemical changes at the molecular level. We previously demonstrated that FT-IR spectroscopy can reliably distinguish multiple types of carcinoma from healthy tissue. Because various stomach diseases are common, it is important to explore a noninvasive and rapid method to detect malignancy and gastritis in endoscopic biopsies. Our aim was to classify endoscopic biopsies into healthy, gastritis, and malignancy through the use of FT-IR spectroscopy. METHODS A total of 103 endoscopic samples, including 19 cases of cancer, 35 cases of chronic atrophic gastritis, 29 cases of chronic superficial gastritis, and 20 healthy tissue samples, were obtained at the First Hospital of Xi'an Jiaotong University, China. A modified attenuated total reflectance accessory was linked to a WQD-500 FT-IR spectrometer for biopsy measurement. The spectral characteristics for different types of tissues were correlated with the corresponding pathology results. The gastric biopsies were classified by FT-IR spectroscopy and a discriminant analysis method. RESULTS There were significant differences in the FT-IR spectra of four types of gastric biopsies. The discriminant analysis results demonstrated that the sensitivity of FT-IR detection for healthy, superficial gastritis, atrophic gastritis, and gastric cancer was 90%, 90%, 66%, 74%, respectively, which could help satisfy clinical diagnostic requirements. CONCLUSION FT-IR spectroscopy can distinguish disease processes in gastric endoscopic biopsies.
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Affiliation(s)
- Qing-Bo Li
- The State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, Peoples Republic of China
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