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Xu S, Dawuti W, Maimaitiaili M, Dou J, Aizezi M, Aimulajiang K, Lü X, Lü G. Rapid and non-invasive detection of cystic echinococcosis in sheep based on serum fluorescence spectrum combined with machine learning algorithms. JOURNAL OF BIOPHOTONICS 2024; 17:e202300357. [PMID: 38263544 DOI: 10.1002/jbio.202300357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/15/2023] [Accepted: 12/14/2023] [Indexed: 01/25/2024]
Abstract
Cystic echinococcosis (CE) is a grievous zoonotic parasitic disease. Currently, the traditional technology of screening CE is laborious and expensive, developing an innovative technology is urgent. In this study, we combined serum fluorescence spectroscopy with machine learning algorithms to develop an innovative screening technique to diagnose CE in sheep. Serum fluorescence spectra of Echinococcus granulosus sensu stricto-infected group (n = 63) and uninfected E. granulosus s.s. group (n = 60) under excitation at 405 nm were recorded. The linear support vector machine (Linear SVM), Quadratic SVM, medium radial basis function (RBF) SVM, K-nearest neighbor (KNN), and principal component analysis-linear discriminant analysis (PCA-LDA) were used to analyze the spectra data. The results showed that Quadratic SVM had the great classification capacity, its sensitivity, specificity, and accuracy were 85.0%, 93.8%, and 88.9%, respectively. In short, serum fluorescence spectroscopy combined with Quadratic SVM algorithm has great potential in the innovative diagnosis of CE in sheep.
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Affiliation(s)
- Shengke Xu
- College of Life Sciences and Technology, Xinjiang University, Urumqi, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Wubulitalifu Dawuti
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Maierhaba Maimaitiaili
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Jingrui Dou
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Malike Aizezi
- Animal Health Supervision Institute of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, PR China
| | - Kalibixiati Aimulajiang
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Xiaoyi Lü
- College of Software, Xinjiang University, Urumqi, Xinjiang, China
| | - Guodong Lü
- College of Life Sciences and Technology, Xinjiang University, Urumqi, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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2
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Shik AV, Skorobogatov EV, Bliznyuk UA, Chernyaev AP, Avdyukhina VM, Yu Borschegovskaya P, Zolotov SA, Baytler MO, Doroshenko IA, Podrugina TA, Beklemishev MK. Estimation of doses absorbed by potato tubers under electron beam or X-ray irradiation using an optical fingerprinting strategy. Food Chem 2023; 414:135668. [PMID: 36841105 DOI: 10.1016/j.foodchem.2023.135668] [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: 09/17/2022] [Revised: 01/04/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023]
Abstract
High-energy electron beam and X-ray processing of foods can be used for extending their storage life and for combating pests and pathogens. Several instrumental techniques are used to estimate irradiation doses in foods, but these methods are complex and laborious, require expensive equipment, and do not always allow to determine low doses. This study was aimed at developing simple methods for detecting irradiation in potato tubers and for dose estimation. We used a "fingerprinting" strategy that does not involve quantitation of any compound; instead, the rate of indicator reactions involving carbocyanine dyes is measured. The dye content was monitored by its near-infrared fluorescence intensity and visible-light absorption. Potatoes not subjected to treatment and those irradiated with different doses (10, 100, 1000, 5000, or 10,000 Gray) could be distinguished by linear discriminant analysis. Thus, the order of magnitude of the absorbed dose can be estimated with 89% ± 3% accuracy for a mixture of tubers of two potato varieties irradiated with an electron beam or with 95% ± 8% accuracy for one variety irradiated with an X-ray source.
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Affiliation(s)
- Anna V Shik
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
| | - Evgenii V Skorobogatov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia
| | - Ulyana A Bliznyuk
- Physics Department, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia; Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
| | - Alexander P Chernyaev
- Physics Department, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia; Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
| | | | - Polina Yu Borschegovskaya
- Physics Department, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia; Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
| | - Sergey A Zolotov
- Physics Department, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia; Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia
| | - Maksim O Baytler
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia
| | - Irina A Doroshenko
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia
| | - Tatyana A Podrugina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
| | - Mikhail K Beklemishev
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991 GSP-1, Russia.
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Gayer AV, Yakimov BP, Sluchanko NN, Shirshin EA. Multifarious analytical capabilities of the UV/Vis protein fluorescence in blood plasma. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:122028. [PMID: 36327910 DOI: 10.1016/j.saa.2022.122028] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/09/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Autofluorescence of blood plasma has been broadly considered as a prospective disease screening method. However, the assessment of such intrinsic fluorescence is mostly phenomenological, and its origin is still not fully understood, complicating its use in the clinical practice. Here we present the detailed evaluation of analytical capabilities, variability, and formation of blood plasma protein fluorescence based on the open dataset of excitation-emission matrices measured for ∼300 patients with suspected colorectal cancer, and our supporting model experiments. Using high-resolution size-exclusion chromatography coupled with comprehensive spectral analysis, we demonstrate, for the first time, the dominant role of HSA in the formation of blood plasma fluorescence in the visible spectral range (excitation wavelength >350 nm), presumably caused by its oxidative modifications. Furthermore, the diagnostic value of the tryptophan emission, as well as of the tyrosine fluorescence and visible fluorescence of proteins is shown by building a tree-based classification model that uses a small subset of physically interpretable fluorescence features for distinguishing between the control group and cancer patients with >80% accuracy. The obtained results extend current understanding and approaches used for the analysis of blood plasma fluorescence and pave the way for novel autofluorescence-based disease screening methods.
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Affiliation(s)
- Alexey V Gayer
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow 119991, Russia; Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Trubetskaya 8, Moscow 119048, Russia
| | - Boris P Yakimov
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow 119991, Russia; Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Trubetskaya 8, Moscow 119048, Russia
| | - Nikolai N Sluchanko
- A.N. Bach Institute of Biochemistry, Federal Research Center of Biotechnology of the Russian Academy of Sciences, Moscow 119071, Russia
| | - Evgeny A Shirshin
- Faculty of Physics, M.V. Lomonosov Moscow State University, 1-2 Leninskie Gory, Moscow 119991, Russia; Laboratory of Clinical Biophotonics, Biomedical Science and Technology Park, Sechenov First Moscow State Medical University, Trubetskaya 8, Moscow 119048, Russia.
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4
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Biancolillo A, Roger JM, Marini F. N-CovSel, a new strategy for feature selection in N-way data. Anal Chim Acta 2022; 1231:340433. [DOI: 10.1016/j.aca.2022.340433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/26/2022]
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Rehman AU, Qureshi SA. Quantitative auto-fluorescence quenching of free and bound NADH in HeLa cell line model with Carbonyl cyanide-p-Trifluoromethoxy phenylhydrazone (FCCP) as quenching agent. Photodiagnosis Photodyn Ther 2022; 39:102954. [PMID: 35690321 DOI: 10.1016/j.pdpdt.2022.102954] [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: 04/29/2022] [Revised: 05/26/2022] [Accepted: 06/07/2022] [Indexed: 11/19/2022]
Abstract
The autofluorescence of endogenous biomolecules (Nicotinamide adenine dinucleotide (NAD, its reduced form NADH and the phosphorylated form NAD(P)H take part in cellular metabolic pathways and has vital importance for in vivo and ex vivo photo diagnostic applications of biological tissues. We present a detailed quenching analysis of Carbonyl cyanide-p-Trifluoromethoxy phenylhydrazone (FCCP) 50-1000 µM and analyzed the fluorescence signal from NADH/ NAD(P)H in vitro (in solution) and in vivo (HeLa cell suspension).The in vitro samples of pure NADH/ NAD(P)H were excited at λ=340±1 nm while the fluorescence signal was collected in the range of 400-550 nm. The quenching process was characterized using excitation emission matrix (EEM) fluorescence spectroscopy and Stern- Volmer plots. The experimental results illustrated maximum fluorescence emission for the control NADH samples (i.e., no FCCP), while the fluorescence signal from the solution progressively decreased with the increasing concentration of the FCCP, until it reaches the base line (i.e., no fluorescence signal) at 1000 µM of FCCP. In vitro study shows that the fluorescence quenching of free NADH was found to be lower than the bound NAD(P)H with similar diminishing trend. The quenching of bound NAD(P)H in cells is attenuated compared to solution quenching possibly due to a contribution from the metabolic/antioxidant response in cells and fluorescence exponential decay curve lies between plated and suspended HeLa cells. A two-fold increase in the fluorescence intensity of NAD(P)H was observed after the bond formation with L-Malate Dehydrogenase (L-MDH, Sigma Aldrich #10127248001) protein This work has applications for sharp tumor demarcation during sensitive surgical procedures as well as to enhance fluorescence based diagnosis of biological tissues.
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Affiliation(s)
- Aziz Ul Rehman
- ARC Centre of Excellence in Nanoscale Biophotonics, Macquarie University, Sydney, New South Wales 2109, Australia; Agri & Biophotonics Division, National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O. Nilore, Islamabad 45650, Pakistan.
| | - Shahzad Ahmad Qureshi
- Department of Computer and Information Sciences, Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad 45650, Pakistan
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Zhou L, Kong Y, Wu J, Li X, Fei Y, Ma J, Wang Y, Mi L. Metabolic Changes in Maternal and Cord Blood in One Case of Pregnancy-Associated Breast Cancer Seen by Fluorescence Lifetime Imaging Microscopy. Diagnostics (Basel) 2021; 11:diagnostics11081494. [PMID: 34441428 PMCID: PMC8392038 DOI: 10.3390/diagnostics11081494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/16/2021] [Accepted: 08/16/2021] [Indexed: 11/30/2022] Open
Abstract
Pregnancy-associated breast cancer (PABC) is a rare disease, which is frequently diagnosed at an advanced stage due to limitations in current diagnostic methods. In this study, fluorescence lifetime imaging microscopy (FLIM) was used to study the metabolic changes by measuring maternal blood and umbilical cord blood via the autofluorescence of coenzymes, reduced nicotinamide adenine dinucleotide (phosphate) (NAD(P)H), and flavin adenine dinucleotide (FAD). The NAD(P)H data showed that a PABC case had significant differences compared with normal cases, which may indicate increased glycolysis. The FAD data showed that both maternal and cord blood of PABC had shorter mean lifetimes and higher bound-FAD ratios. The significant differences suggested that FLIM testing of blood samples may be a potential method to assist in PABC non-radiative screening.
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Affiliation(s)
- Li Zhou
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
- Department of Biochemistry and Molecular Biology, School of Life Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Yawei Kong
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
| | - Junxin Wu
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
| | - Xingzhi Li
- School of Materials Science and Engineering, Hubei University of Automotive Technology, 167 Checheng West Road, Shiyan 442002, China;
| | - Yiyan Fei
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
| | - Jiong Ma
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
- Institute of Biomedical Engineering and Technology, Academy for Engineer and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China
- Shanghai Engineering Research Center of Industrial Microorganisms, The Multiscale Research Institute of Complex Systems (MRICS), School of Life Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Yulan Wang
- Department of Gynecology and Obstetrics, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, 26 Shengli Str., Wuhan 430014, China
- Correspondence: (Y.W.); (L.M.)
| | - Lan Mi
- Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China; (L.Z.); (Y.K.); (J.W.); (Y.F.); (J.M.)
- Institute of Biomedical Engineering and Technology, Academy for Engineer and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China
- Correspondence: (Y.W.); (L.M.)
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Morcuende-Ventura V, Hermoso-Durán S, Abian-Franco N, Pazo-Cid R, Ojeda JL, Vega S, Sanchez-Gracia O, Velazquez-Campoy A, Sierra T, Abian O. Fluorescence Liquid Biopsy for Cancer Detection Is Improved by Using Cationic Dendronized Hyperbranched Polymer. Int J Mol Sci 2021; 22:6501. [PMID: 34204408 PMCID: PMC8234380 DOI: 10.3390/ijms22126501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/19/2022] Open
Abstract
(1) Background: Biophysical techniques applied to serum samples characterization could promote the development of new diagnostic tools. Fluorescence spectroscopy has been previously applied to biological samples from cancer patients and differences from healthy individuals were observed. Dendronized hyperbranched polymers (DHP) based on bis(hydroxymethyl)propionic acid (bis-MPA) were developed in our group and their potential biomedical applications explored. (2) Methods: A total of 94 serum samples from diagnosed cancer patients and healthy individuals were studied (20 pancreatic ductal adenocarcinoma, 25 blood donor, 24 ovarian cancer, and 25 benign ovarian cyst samples). (3) Results: Fluorescence spectra of serum samples (fluorescence liquid biopsy, FLB) in the presence and the absence of DHP-bMPA were recorded and two parameters from the signal curves obtained. A secondary parameter, the fluorescence spectrum score (FSscore), was calculated, and the diagnostic model assessed. For pancreatic ductal adenocarcinoma (PDAC) and ovarian cancer, the classification performance was improved when including DHP-bMPA, achieving high values of statistical sensitivity and specificity (over 85% for both pathologies). (4) Conclusions: We have applied FLB as a quick, simple, and minimally invasive promising technique in cancer diagnosis. The classification performance of the diagnostic method was further improved by using DHP-bMPA, which interacted differentially with serum samples from healthy and diseased subjects. These preliminary results set the basis for a larger study and move FLB closer to its clinical application, providing useful information for the oncologist during patient diagnosis.
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Affiliation(s)
- Violeta Morcuende-Ventura
- Instituto de Nanociencia y Materiales de Aragón (INMA), Química Orgánica, Facultad de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain;
- Joint Units IQFR-CSIC-BIFI and GBsC-CSIC-BIFI, Institute of Biocomputation and Physics of Complex Systems (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain; (S.H.-D.), (S.V.), (A.V.-C.)
| | - Sonia Hermoso-Durán
- Joint Units IQFR-CSIC-BIFI and GBsC-CSIC-BIFI, Institute of Biocomputation and Physics of Complex Systems (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain; (S.H.-D.), (S.V.), (A.V.-C.)
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), 50009 Zaragoza, Spain
| | | | - Roberto Pazo-Cid
- Hospital Universitario Miguel Servet (HUMS), Paseo Isabel la Católica, 1-3, 50009 Zaragoza, Spain;
| | - Jorge L. Ojeda
- Department of Statistical Methods, Universidad de Zaragoza, 50009 Zaragoza, Spain;
| | - Sonia Vega
- Joint Units IQFR-CSIC-BIFI and GBsC-CSIC-BIFI, Institute of Biocomputation and Physics of Complex Systems (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain; (S.H.-D.), (S.V.), (A.V.-C.)
| | | | - Adrian Velazquez-Campoy
- Joint Units IQFR-CSIC-BIFI and GBsC-CSIC-BIFI, Institute of Biocomputation and Physics of Complex Systems (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain; (S.H.-D.), (S.V.), (A.V.-C.)
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), 50009 Zaragoza, Spain
- Departamento de Bioquímica y Biología Molecular y Celular, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Fundación ARAID, Gobierno de Aragón, 50018 Zaragoza, Spain
| | - Teresa Sierra
- Instituto de Nanociencia y Materiales de Aragón (INMA), Química Orgánica, Facultad de Ciencias, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain;
| | - Olga Abian
- Joint Units IQFR-CSIC-BIFI and GBsC-CSIC-BIFI, Institute of Biocomputation and Physics of Complex Systems (BIFI), Universidad de Zaragoza, 50018 Zaragoza, Spain; (S.H.-D.), (S.V.), (A.V.-C.)
- Instituto de Investigación Sanitaria Aragón (IIS Aragón), 50009 Zaragoza, Spain
- Departamento de Bioquímica y Biología Molecular y Celular, Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas (CIBERehd), 28029 Madrid, Spain
- Instituto Aragonés de Ciencias de la Salud (IACS), 50009 Zaragoza, Spain
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Supawat B, Aye KT, Ritpanja J, Nueangwong W, Kothan S, Pan J, Tungjai M. Differences in Spectroscopic Properties of Saliva Taken From Normal Subjects and Oral Cancer Patients: Comparison Studies. J Fluoresc 2021; 31:747-754. [PMID: 33638767 DOI: 10.1007/s10895-021-02707-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/18/2021] [Indexed: 02/07/2023]
Abstract
Oral cancer disease is among the most common cancers in the world and are associated with mortality and morbidity. The characterization of saliva samples may help to distinguish patients with oral cancer disease from normal subjects. To characterize spectra of saliva samples from normal subjects and oral cancer patients by use of fluorescence, absorption, and 1H-NMR spectroscopy. Whole unstimulated saliva samples were collected from patients with oral cancer disease and normal subjects. The saliva samples were analyzed by absorption, fluorescence and 1H-NMR spectroscopic techniques. The characteristic spectra of saliva samples from patients with oral cancer disease and normal subjects were compared. For fluorescence spectroscopic studies, six fluorophores were found in saliva samples. Autofluorescence emission spectra and synchronous spectra of saliva were different between normal subjects and oral cancer patients. For absorption spectroscopic studies, the typical absorption spectra of saliva samples from normal subjects and oral cancer patients were also different in absorption intensity, 1st and 2nd derivative of absorption spectra values. For 1H-NMR studies, nine metabolites and four metabolites were found in saliva samples taken from normal subjects and oral cancer patients, respectively. The metabolic profiles of saliva samples from normal subjects and oral cancer patients were not similar. The characteristic spectra of saliva samples from normal subjects and oral cancer patients were found. These results showed differences in the spectra of saliva samples between both that groups. The spectra from each spectroscopic techniques could determine a candidate saliva biomarkers for distinguishing patients with oral cancer disease from normal subjects.
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Affiliation(s)
- Benjamaporn Supawat
- Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Khin TheNu Aye
- Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
- Ph.D. degree program in biomedical sciences, Faculty of Associated Medical Sciences, Chiang Mai University, under the CMU Presidential Scholarship, Chiang Mai, 50200, Thailand
| | | | | | - Suchart Kothan
- Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Jie Pan
- Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand
- Shandong Provincial Key Laboratory of Animal Resistant Biology, College of Life Sciences, Shandong Normal University, Jinan, China
| | - Montree Tungjai
- Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand.
- Center of Radiation Research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand.
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9
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Guo K, Wu J, Kong Y, Zhou L, Li W, Fei Y, Ma J, Mi L. Label-free and noninvasive method for assessing the metabolic status in type 2 diabetic rats with myocardium diastolic dysfunction. BIOMEDICAL OPTICS EXPRESS 2021; 12:480-493. [PMID: 33659084 PMCID: PMC7899513 DOI: 10.1364/boe.413347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 06/12/2023]
Abstract
This study assesses the metabolic status of rat diabetic cardiomyopathy (DCM) models. Echocardiography is used to detect the diastolic dysfunction in type 2 diabetic rats, and a lower threshold for inducible atrial fibrillation is found in type 2 diabetic rats with diastolic dysfunction compared to the control. Metabolic abnormalities are detected by status changes of reduced nicotinamide adenine dinucleotide (phosphate) (NAD(P)H), which is an essential coenzyme in cells or tissues. Fluorescence lifetime imaging microscopy (FLIM) is used to monitor changes in NAD(P)H in both myocardial tissues and blood. FLIM reveals that the protein-bound proportion of NAD(P)H in rat myocardium in the DCM group is smaller than the control group, which indicates the oxidative phosphorylation rate of the DCM group decreased. Similar results are found for blood plasma of DCM rats by the FLIM study. FLIM exhibits high potential for screening DCM as a label-free, sensitive, and noninvasive method.
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Affiliation(s)
- Kai Guo
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China
- These authors contributed equally to this work
| | - Junxin Wu
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
- These authors contributed equally to this work
| | - Yawei Kong
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Li Zhou
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Wei Li
- Department of Cardiology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai 200092, China
| | - Yiyan Fei
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Jiong Ma
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
- Institute of Biomedical Engineering and Technology, Academy for Engineer and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China
- The Multiscale Research Institute of Complex Systems (MRICS), School of Life Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Lan Mi
- Department of Optical Science and Engineering, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Green Photoelectron Platform, Fudan University, 220 Handan Road, Shanghai 200433, China
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10
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Monitoring Breast Cancer Response to Treatment Using Stokes Shift Spectroscopy of Blood Plasma. J Fluoresc 2019; 29:803-812. [PMID: 31187405 DOI: 10.1007/s10895-019-02399-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/28/2019] [Indexed: 01/01/2023]
Abstract
With the emerging trend of personalized cancer treatment, there is a need to develop noninvasive/minimally invasive techniques for treatment monitoring. In this regard, in this work fluorescence analysis of blood plasma of breast cancer patients has been used for the evaluation of response to treatment. This approach delivers information not only about the change in biochemical constituents but also about the altered metabolic pathway. Spectral deconvolution method is employed to compute the fluorescence intensity, peak wavelength, and full-width half maxima for different endogenous fluorophores. The fluorescence measurements were made on blood plasma collected from 10 normal subjects, 10 pre-treated cancer patients, and 10 post-treated patients. Besides, variations in relative concentration of tryptophan, collagen, NADH, and FAD, peak shifts and broadening of peaks are observed for tryptophan, NADH, and FAD, in blood plasma of pre-treated cancer patients indicating both biochemical and microenvironmental changes at cellular level. Further, the spectral profile of blood plasma of post-treated patients found to be similar to blood plasma of normal subjects. Linear discriminant analysis showed that pre-treated and post-treated breast cancer is discriminated with a sensitivity and specificity of 100% and 100% respectively.
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11
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Meena BL, Agarwal A, Pantola C, Pandey K, Pradhan A. Concentration of FAD as a marker for cervical precancer detection. JOURNAL OF BIOMEDICAL OPTICS 2019; 24:1-7. [PMID: 30903655 PMCID: PMC6975182 DOI: 10.1117/1.jbo.24.3.035008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 02/22/2019] [Indexed: 05/28/2023]
Abstract
We report the ex vivo results of an in-house fabricated portable device based on polarized fluorescence measurements in the clinical environment. This device measures the polarized fluorescence and elastic scattering spectra with 405-nm laser and white light sources, respectively. The dominating fluorophore with 405-nm excitation is flavin adenine dinucleotide (FAD) with a fluorescence peak around 510 nm. The measured spectra are highly modulated by the interplay of scattering and absorption effects. Due to this, valuable information gets masked. To reduce these effects, intrinsic fluorescence was extracted by normalizing polarized fluorescence spectra with polarized elastic scattering spectra obtained. A number of fluorophores contribute to the fluorescence spectra and need to be decoupled to understand their roles in the progression of cancer. Nelder-Mead method has been utilized to fit the spectral profile with Gaussian to decouple the different bands of contributing fluorophores (FAD and porphyrin). The change in concentration of FAD during disease progression manifests in the change in ratio of total area to FWHM of its Gaussian profile. Receiver operating characteristic (ROC) curve analysis has been used to discriminate different grades of cervical precancer by using the ratio as input parameter. The sensitivity and specificity for discrimination of normal samples from CIN I (cervical intraepithelial neoplasia) are 75% and 54%, respectively. Further, the normal samples can be discriminated from CIN II samples with 100% and 82% sensitivity and specificity, respectively, and the CIN I from CIN II samples can also be discriminated with 100% sensitivity and 90% specificity, respectively. The results show that the change in the concentration of (FAD) can be used as a marker to discriminate the different grades of the cancer and biochemical changes at an early stage of the cancer can also be monitored with this technique.
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Affiliation(s)
- Bharat L. Meena
- Indian Institute of Technology Kanpur, Department of Physics, Kanpur, Uttar Pradesh, India
- University of Rajasthan, Department of Physics, Jaipur, Rajasthan, India
| | - Asha Agarwal
- Regency Hospital, Department of Pathology, Kanpur, Uttar Pradesh, India
| | - Chayanika Pantola
- LPS Institute of Cardiology, Department of Pathology, Kanpur, Uttar Pradesh, India
| | - Kiran Pandey
- GSVM Medical College, Department of Obstetrics and Gynaecology, Kanpur, Uttar Pradesh, India
| | - Asima Pradhan
- Indian Institute of Technology Kanpur, Department of Physics, Kanpur, Uttar Pradesh, India
- Indian Institute of Technology Kanpur, Center for Lasers and Photonics, Kanpur, Uttar Pradesh, India
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12
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Rizou SV, Evangelou K, Myrianthopoulos V, Mourouzis I, Havaki S, Athanasiou A, Vasileiou PVS, Margetis A, Kotsinas A, Kastrinakis NG, Sfikakis P, Townsend P, Mikros E, Pantos C, Gorgoulis VG. A Novel Quantitative Method for the Detection of Lipofuscin, the Main By-Product of Cellular Senescence, in Fluids. Methods Mol Biol 2019; 1896:119-138. [PMID: 30474845 DOI: 10.1007/978-1-4939-8931-7_12] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lipofuscin accumulation is a hallmark of senescence. This nondegradable material aggregates in the cytoplasm of stressed or damaged cells due to metabolic imbalance associated with aging and age-related diseases. Indications of a soluble state of lipofuscin have also been provided, rendering the perspective of monitoring such processes via lipofuscin quantification in liquids intriguing. Therefore, the development of an accurate and reliable method is of paramount importance. Currently available assays are characterized by inherent pitfalls which demote their credibility. We herein describe a simple, highly specific and sensitive protocol for measuring lipofuscin levels in any type of liquid. The current method represents an evolution of a previously described assay, developed for in vitro and in vivo senescent cell recognition that exploits a newly synthesized Sudan Black-B analog (GL13). Analysis of human clinical samples with the modified protocol provided strong evidence of its usefulness for the exposure and surveillance of age-related conditions.
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Affiliation(s)
- Sophia V Rizou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Evangelou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Vassilios Myrianthopoulos
- Division of Pharmaceutical Chemistry, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
- PharmaInformatics Unit, Athena Research Center, Athens, Greece
| | - Iordanis Mourouzis
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Sophia Havaki
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Panagiotis V S Vasileiou
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Aggelos Margetis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Athanassios Kotsinas
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos G Kastrinakis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Petros Sfikakis
- First Department of Propaedeutic Internal Medicine and Rheumatology Unit, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Paul Townsend
- Faculty Institute for Cancer Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK
| | - Emmanuel Mikros
- Division of Pharmaceutical Chemistry, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
- PharmaInformatics Unit, Athena Research Center, Athens, Greece
| | - Constantinos Pantos
- Department of Pharmacology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Vassilis G Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
- Faculty Institute for Cancer Sciences, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, UK.
- Biomedical Research Foundation, Academy of Athens, Athens, Greece.
- Center for New Biotechnologies and Precision Medicine, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
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13
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Divyanin NN, Rukosueva EA, Garmash AV, Beklemishev MK. Recognition of Model Analyte Mixtures in the Presence of Blood Plasma Using a Mixture of Fluorophores (“Fluorescent Tongue”). JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818120043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Brunnbauer P, Leder A, Kamali C, Kamali K, Keshi E, Splith K, Wabitsch S, Haber P, Atanasov G, Feldbrügge L, Sauer IM, Pratschke J, Schmelzle M, Krenzien F. The nanomolar sensing of nicotinamide adenine dinucleotide in human plasma using a cycling assay in albumin modified simulated body fluids. Sci Rep 2018; 8:16110. [PMID: 30382125 PMCID: PMC6208386 DOI: 10.1038/s41598-018-34350-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 10/15/2018] [Indexed: 01/05/2023] Open
Abstract
Nicotinamide adenine dinucleotide (NAD), a prominent member of the pyridine nucleotide family, plays a pivotal role in cell-oxidation protection, DNA repair, cell signalling and central metabolic pathways, such as beta oxidation, glycolysis and the citric acid cycle. In particular, extracellular NAD+ has recently been demonstrated to moderate pathogenesis of multiple systemic diseases as well as aging. Herein we present an assaying method, that serves to quantify extracellular NAD+ in human heparinised plasma and exhibits a sensitivity ranging from the low micromolar into the low nanomolar domain. The assay achieves the quantification of extracellular NAD+ by means of a two-step enzymatic cycling reaction, based on alcohol dehydrogenase. An albumin modified revised simulated body fluid was employed as standard matrix in order to optimise enzymatic activity and enhance the linear behaviour and sensitivity of the method. In addition, we evaluated assay linearity, reproducibility and confirmed long-term storage stability of extracellular NAD+ in frozen human heparinised plasma. In summary, our findings pose a novel standardised method suitable for high throughput screenings of extracellular NAD+ levels in human heparinised plasma, paving the way for new clinical discovery studies.
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Affiliation(s)
- Philipp Brunnbauer
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Annekatrin Leder
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Can Kamali
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Kaan Kamali
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Eriselda Keshi
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Katrin Splith
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Simon Wabitsch
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Philipp Haber
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Georgi Atanasov
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Linda Feldbrügge
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany.,Berlin Institute of Health (BIH), Berlin, 10178, Germany
| | - Igor M Sauer
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Johann Pratschke
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Moritz Schmelzle
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Felix Krenzien
- Experimental Surgery and Regenerative Medicine, Department of Surgery, Campus Charité Mitte and Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Berlin, 13353, Germany. .,Berlin Institute of Health (BIH), Berlin, 10178, Germany.
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15
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Lualdi M, Colombo A, Leo E, Morelli D, Vannelli A, Battaglia L, Poiasina E, Marchesini R. Natural Fluorescence Spectroscopy of Human Blood Plasma in the Diagnosis of Colorectal Cancer: Feasibility Study and Preliminary Results. TUMORI JOURNAL 2018; 93:567-71. [DOI: 10.1177/030089160709300609] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aim and background Fluorescence spectroscopy of biomolecules is considered a promising method to discriminate in vivo normal tissue from malignant tissue at various sites including breast, cervix, lung, and colon. However, only few studies have been reported on the feasibility of exploiting fluorescence spectroscopy of blood to characterize pathological changes usable in diagnostic oncology. In this study, the fluorescence characteristics of human blood plasma have been studied in the visible spectral range in an attempt to discriminate patients with colorectal cancer from subjects of a control population. Patients and methods The study involved 341 subjects, including 169 blood donors with no evidence of disease, 143 patients bearing colorectal adenocarcinomas (36 in the colon, 38 in the sigmoid colon and 69 in the rectum), 11 patients with local relapse, 10 patients with familial adenomatous polyposis and 8 with single adenomas. Blood samples were collected from all subjects and plasma fluorescence spectrum was analyzed using a conventional spectrofluorometer. Results The intensity of a fluorescence emission peak around 615–635 nm, which could reasonably be ascribed to endogenous porphyrins, was significantly different between patients bearing colorectal cancer and blood donors. The diagnostic capacity of the method was tested by ROC analysis, which resulted in an area under the curve of 0.72, close to that reported for the CEA test. Conclusion These results, although preliminary, suggest the potential of fluorescence measurements of blood plasma as an additional method for diagnostic application in colon cancer.
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Affiliation(s)
- Manuela Lualdi
- Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Ambrogio Colombo
- Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Ermanno Leo
- Division of General Surgery B, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Daniele Morelli
- Laboratory of Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Alberto Vannelli
- Division of General Surgery B, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Luigi Battaglia
- Division of General Surgery B, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Elia Poiasina
- Division of General Surgery B, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Renato Marchesini
- Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
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16
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Meena BL, Singh P, Sah AN, Pandey K, Agarwal A, Pantola C, Pradhan A. Intrinsic fluorescence for cervical precancer detection using polarized light based in-house fabricated portable device. JOURNAL OF BIOMEDICAL OPTICS 2018; 23:1-7. [PMID: 29341542 DOI: 10.1117/1.jbo.23.1.015005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
An in-house fabricated portable device has been tested to detect cervical precancer through the intrinsic fluorescence from human cervix of the whole uterus in a clinical setting. A previously validated technique based on simultaneously acquired polarized fluorescence and polarized elastic scattering spectra from a turbid medium is used to extract the intrinsic fluorescence. Using a diode laser at 405 nm, intrinsic fluorescence of flavin adenine dinucleotide, which is the dominant fluorophore and other contributing fluorophores in the epithelium of cervical tissue, has been extracted. Different grades of cervical precancer (cervical intraepithelial neoplasia; CIN) have been discriminated using principal component analysis-based Mahalanobis distance and linear discriminant analysis. Normal, CIN I and CIN II samples have been discriminated from one another with high sensitivity and specificity at 95% confidence level. This ex vivo study with cervix of whole uterus samples immediately after hysterectomy in a clinical environment indicates that the in-house fabricated portable device has the potential to be used as a screening tool for in vivo precancer detection using intrinsic fluorescence.
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Affiliation(s)
- Bharat Lal Meena
- Indian Institute of Technology Kanpur, Department of Physics, Kanpur, Uttar Pradesh, India
- University of Rajasthan, Department of Physics, Jaipur, Rajasthan, India
| | - Pankaj Singh
- Indian Institute of Technology Kanpur, Department of Physics, Kanpur, Uttar Pradesh, India
- LSM Government PG College, Department of Physics, Pithoragarh, Uttarakhand, India
| | - Amar Nath Sah
- Indian Institute of Technology Kanpur, Department of Biological Sciences and Bioengineering, Kanpur,, India
| | - Kiran Pandey
- GSVM Medical College, Department of Obstetrics and Gynaecology, Kanpur, Uttar Pradesh, India
| | - Asha Agarwal
- Regency Hospital, Department of Pathology, Kanpur, Uttar Pradesh, India
| | - Chayanika Pantola
- LPS Institute of Cardiology, Department of Pathology, Kanpur, Uttar Pradesh, India
| | - Asima Pradhan
- Indian Institute of Technology Kanpur, Department of Physics, Kanpur, Uttar Pradesh, India
- Indian Institute of Technology Kanpur, Center for Lasers and Photonics, Kanpur, Uttar Pradesh, India
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17
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Divyanin NN, Razina AV, Rukosueva EA, Garmash AV, Beklemishev MK. Discrimination of 2-3-component mixtures of organic analytes by a “fluorescent tongue”: A pilot study. Microchem J 2017. [DOI: 10.1016/j.microc.2017.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Shahbazy M, Vasighi M, Kompany-Zareh M, Ballabio D. Oblique rotation of factors: a novel pattern recognition strategy to classify fluorescence excitation-emission matrices of human blood plasma for early diagnosis of colorectal cancer. MOLECULAR BIOSYSTEMS 2017; 12:1963-75. [PMID: 27076033 DOI: 10.1039/c6mb00162a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Colorectal cancer (CRC) ranks high in both men and women, accounting for about 13% of all cancers. In this study, a novel pattern recognition strategy is proposed to improve early diagnosis of CRC through visualizing the relationship between different spectral patterns in a case-control research. Partial least squares-discriminant analysis (PLS-DA) and supervised Kohonen network (SKN) were used to classify the fluorescence excitation-emission matrices (EEMs) from 289 human blood plasma samples containing CRC patients, adenomas tumor, other non-malignant findings and healthy individuals. To obtain optimal factors, oblique rotation (OR) and genetic algorithm (GA) were used to rotate the factors by optimizing transformation matrix elements. Transformed factors were introduced to SKN to build a classification model and the model performance was examined via comparison with a common classifier; PLS-DA. Classification models were built for CRC-healthy and adenomas-healthy samples and the best results were obtained through applying GA-OR on PLS factors and introducing them to the classifiers. Non-error rates for SKN and PLS-DA models assisted with GA (for selecting more informative PLS factors) and OR were equal to 0.97 and 0.95 in cross validation and 0.93 and 0.90 for prediction of the external test set, respectively. Moreover, according to the acceptable results for adenomas-healthy cases using optimal factors, CRC can be diagnosed in early stages. Combining classifiers and optimal factors proved to be efficient for distinguishing healthy and malignant samples, and OR can significantly improve performance of the classification model.
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Affiliation(s)
- Mohammad Shahbazy
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Mahdi Vasighi
- Department of Computer Science and Information Technology, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Mohsen Kompany-Zareh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Davide Ballabio
- Milano Chemometrics and QSAR Research Group, Department of Earth and Environmental Sciences, University of Milano-Bicocca, P.za della Scienza 1, 20126 Milan, Italy
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19
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Rapid diagnosis and intraoperative margin assessment of human lung cancer with fluorescence lifetime imaging microscopy. BBA CLINICAL 2017; 8:7-13. [PMID: 28567338 PMCID: PMC5447569 DOI: 10.1016/j.bbacli.2017.04.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/22/2017] [Indexed: 12/12/2022]
Abstract
A method of rapidly differentiating lung tumor from healthy tissue is extraordinarily needed for both the diagnosis and the intraoperative margin assessment. We assessed the ability of fluorescence lifetime imaging microscopy (FLIM) for differentiating human lung cancer and normal tissues with the autofluorescence, and also elucidated the mechanism in tissue studies and cell studies. A 15-patient testing group was used to compare FLIM results with traditional histopathology diagnosis. Based on the endogenous fluorescence lifetimes of the testing group, a criterion line was proposed to distinguish normal and cancerous tissues. Then by blinded examined 41 sections from the validation group of other 16 patients, the sensitivity and specificity of FLIM were determined. The cellular metabolism was studied with specific perturbations of oxidative phosphorylation and glycolysis in cell studies. The fluorescence lifetime of cancerous lung tissues is consistently lower than normal tissues, and this is due to the both decrease of reduced nicotinamide adenine dinucleotide (NADH) and flavin adenine dinucleotide (FAD) lifetimes. A criterion line of lifetime at 1920 ps can be given for differentiating human lung cancer and normal tissues.The sensitivity and specificity of FLIM for lung cancer diagnosis were determined as 92.9% and 92.3%. These findings suggest that NADH and FAD can be used to rapidly diagnose lung cancer. FLIM is a rapid, accurate and highly sensitive technique in the judgment during lung cancer surgery and it can be potential in earlier cancer detection.
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20
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Shirshin EA, Gurfinkel YI, Priezzhev AV, Fadeev VV, Lademann J, Darvin ME. Two-photon autofluorescence lifetime imaging of human skin papillary dermis in vivo: assessment of blood capillaries and structural proteins localization. Sci Rep 2017; 7:1171. [PMID: 28446767 PMCID: PMC5430894 DOI: 10.1038/s41598-017-01238-w] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/28/2017] [Indexed: 11/27/2022] Open
Abstract
The papillary dermis of human skin is responsible for its biomechanical properties and for supply of epidermis with chemicals. Dermis is mainly composed of structural protein molecules, including collagen and elastin, and contains blood capillaries. Connective tissue diseases, as well as cardiovascular complications have manifestations on the molecular level in the papillary dermis (e.g. alteration of collagen I and III content) and in the capillary structure. In this paper we assessed the molecular structure of internal and external regions of skin capillaries using two-photon fluorescence lifetime imaging (FLIM) of endogenous compounds. It was shown that the capillaries are characterized by a fast fluorescence decay, which is originated from red blood cells and blood plasma. Using the second harmonic generation signal, FLIM segmentation was performed, which provided for spatial localization and fluorescence decay parameters distribution of collagen I and elastin in the dermal papillae. It was demonstrated that the lifetime distribution was different for the inner area of dermal papillae around the capillary loop that was suggested to be due to collagen III. Hence, we propose a generalized approach to two-photon imaging of the papillary dermis components, which extends the capabilities of this technique in skin diagnosis.
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Affiliation(s)
- Evgeny A Shirshin
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia.
| | - Yury I Gurfinkel
- Research Clinical Center of JSC "Russian Railways", Moscow, Russia
| | | | - Victor V Fadeev
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russia
| | - Juergen Lademann
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité -Universitätsmedizin Berlin, Berlin, Germany
| | - Maxim E Darvin
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité -Universitätsmedizin Berlin, Berlin, Germany.
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21
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Martinez O, Dabarera R, Premaratne K, Kubat M, Englehardt J. LFDA model for the assessment of water quality through Microtox® using excitation-emission matrices. INTELL DATA ANAL 2017. [DOI: 10.3233/ida-150291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Oscar Martinez
- Department of Electrical and Computer Engineering, University of Miami, FL, USA
| | - Ranga Dabarera
- Department of Electrical and Computer Engineering, University of Miami, FL, USA
| | - Kamal Premaratne
- Department of Electrical and Computer Engineering, University of Miami, FL, USA
| | - Miroslav Kubat
- Department of Electrical and Computer Engineering, University of Miami, FL, USA
| | - James Englehardt
- Department of Civil, Architectural and Environmental Engineering, University of Miami, FL, USA
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22
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Autofluorescence Imaging and Spectroscopy of Human Lung Cancer. APPLIED SCIENCES-BASEL 2016. [DOI: 10.3390/app7010032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Sarkar A, Barui A, Ghosh B, Mukherjee A, Sarkar R, Sengupta S, Chatterjee J. Autofluorescence signatures for classifying lung cells during epithelial mesenchymal transition. RSC Adv 2016. [DOI: 10.1039/c6ra16866c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Morphological and autofluorescence (blue, green, red) patterns in lung normal cells during EMT progression.
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Affiliation(s)
- Atasi Sarkar
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Ananya Barui
- Centre for Healthcare Education
- Science and Technology
- Indian Institute of Engineering Science and Technology
- Shibpur-711103
- India
| | - Biswajoy Ghosh
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Anirban Mukherjee
- Department of Electrical Engineering
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
| | - Ripon Sarkar
- Centre for Healthcare Education
- Science and Technology
- Indian Institute of Engineering Science and Technology
- Shibpur-711103
- India
| | | | - Jyotirmoy Chatterjee
- School of Medical Science and Technology
- Indian Institute of Technology Kharagpur
- Kharagpur-721302
- India
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24
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Singh SP, Ibrahim O, Byrne HJ, Mikkonen JW, Koistinen AP, Kullaa AM, Lyng FM. Recent advances in optical diagnosis of oral cancers: Review and future perspectives. Head Neck 2015; 38 Suppl 1:E2403-11. [PMID: 26613806 DOI: 10.1002/hed.24293] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 07/30/2015] [Accepted: 09/12/2015] [Indexed: 12/16/2022] Open
Abstract
Optical diagnosis techniques offer several advantages over traditional approaches, including objectivity, speed, and cost, and these label-free, noninvasive methods have the potential to change the future workflow of cancer management. The oral cavity is particularly accessible and, thus, such methods may serve as alternate/adjunct tools to traditional methods. Recently, in vivo human clinical studies have been initiated with a view to clinical translation of such technologies. A comprehensive review of optical methods in oral cancer diagnosis is presented. After an introduction to the epidemiology and etiological factors associated with oral cancers currently used, diagnostic methods and their limitations are presented. A thorough review of fluorescence, infrared absorption, and Raman spectroscopic methods in oral cancer diagnosis is presented. The applicability of minimally invasive methods based on serum/saliva is also discussed. The review concludes with a discussion on future demands and scope of developments from a clinical point of view. © 2015 Wiley Periodicals, Inc. Head Neck 38: E2403-E2411, 2016.
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Affiliation(s)
- S P Singh
- Institute of Dentistry, University of Eastern Finland, Kuopio, Finland.,SIB Laboratories, University of Eastern Finland, Kuopio, Finland
| | - Ola Ibrahim
- DIT Centre for Radiation and Environmental Science, FOCAS Research Institute, Dublin Institute of Technology, Dublin, Ireland.,School of Physics, Dublin Institute of Technology, Dublin, Ireland
| | - Hugh J Byrne
- FOCAS Research Institute, Dublin Institute of Technology, Dublin, Ireland
| | - Jopi W Mikkonen
- SIB Laboratories, University of Eastern Finland, Kuopio, Finland
| | - Arto P Koistinen
- SIB Laboratories, University of Eastern Finland, Kuopio, Finland
| | - Arja M Kullaa
- Institute of Dentistry, University of Eastern Finland, Kuopio, Finland.,Research Group of Oral Health Sciences, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Fiona M Lyng
- DIT Centre for Radiation and Environmental Science, FOCAS Research Institute, Dublin Institute of Technology, Dublin, Ireland.,School of Physics, Dublin Institute of Technology, Dublin, Ireland
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25
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Yuvaraj M, Aruna P, Koteeswaran D, Tamilkumar P, Ganesan S. Rapid fluorescence spectroscopic characterization of salivary DNA of normal subjects and OSCC patients using ethidium bromide. J Fluoresc 2015; 25:79-85. [PMID: 25618462 DOI: 10.1007/s10895-014-1482-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 11/25/2014] [Indexed: 12/11/2022]
Abstract
Recently, deoxyribonucleic acid (DNA) based biomarker(s) detection has been employed for cancer diagnosis. Earlier reports have suggested the presence of more DNA in the saliva of oral squamous cell carcinoma (OSCC) than normal by electrophoresis technique. Based on these, steady state and excited state kinetics of salivary DNA has been performed with 27 normal subjects and 67 OSCC patients saliva using ethidium bromide as a probe to look for the possibility in discrimination between them. On statistical analysis the sensitivity and specificity of 88.9 and 94.0 % has been achieved from the fluorescence emission spectra and 88.9 and 92.5 % with that of fluorescence excitation.
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Affiliation(s)
- Manoharan Yuvaraj
- Department of Medical Physics, Anna University, Chennai, 600 025, India
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26
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Croce AC, Bottiroli G. Autofluorescence spectroscopy and imaging: a tool for biomedical research and diagnosis. Eur J Histochem 2014; 58:2461. [PMID: 25578980 PMCID: PMC4289852 DOI: 10.4081/ejh.2014.2461] [Citation(s) in RCA: 303] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 12/04/2014] [Indexed: 12/18/2022] Open
Abstract
Native fluorescence, or autofluorescence (AF), consists in the emission of light in the UV-visible, near-IR spectral range when biological substrates are excited with light at suitable wavelength. This is a well-known phenomenon, and the strict relationship of many endogenous fluorophores with morphofunctional properties of the living systems, influencing their AF emission features, offers an extremely powerful resource for directly monitoring the biological substrate condition. Starting from the last century, the technological progresses in microscopy and spectrofluorometry were convoying attention of the scientific community to this phenomenon. In the future, the interest in the autofluorescence will certainly continue. Current instrumentation and analytical procedures will likely be overcome by the unceasing progress in new devices for AF detection and data interpretation, while a progress is expected in the search and characterization of endogenous fluorophores and their roles as intrinsic biomarkers.
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Affiliation(s)
- A C Croce
- Institute of Molecular Genetics of the National Research Council, University of Pavia.
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27
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Synchronous Luminescence Spectroscopic Characterization of Urine of Normal Subjects and Cancer Patients. J Fluoresc 2014; 24:1199-205. [DOI: 10.1007/s10895-014-1401-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 04/29/2014] [Indexed: 10/25/2022]
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28
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Kalaivani R, Masilamani V, AlSalhi MS, Devanesan S, Ramamurthy P, Palled SR, Ganesh KM. Cervical cancer detection by time-resolved spectra of blood components. JOURNAL OF BIOMEDICAL OPTICS 2014; 19:057011. [PMID: 24853147 DOI: 10.1117/1.jbo.19.5.057011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
Fluorescence spectral techniques are very sensitive, and hence they are gaining importance in cancer detection. The biomarkers indicative of cancer could be identified and quantified by spectral or time domain fluorescence spectroscopy. The results of an investigation of time-resolved spectra of cellular components of blood obtained from cervical cancer patients and normal controls are given. The cancer indicative biomarker in this paper is porphyrin; it has a fluorescence decay time of 60% more in samples of cancer patients than those of normal controls. Based on such measurements, a randomized set comprising samples from cancer patients and controls (N=27 in total) could be classified with sensitivity (92%) and specificity (86%).
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Affiliation(s)
- Rudran Kalaivani
- King Saud University, Department of Physics and Astronomy, Riyadh 11451, Kingdom of Saudi ArabiabUniversity of Madras, Department of Nuclear Physics, Chennai 600005, India
| | - Vadivel Masilamani
- King Saud University, Department of Physics and Astronomy, Riyadh 11451, Kingdom of Saudi Arabia
| | - Mohamad Saleh AlSalhi
- King Saud University, Department of Physics and Astronomy, Riyadh 11451, Kingdom of Saudi Arabia
| | - Sandhanasamy Devanesan
- King Saud University, Research Chair, Laser Diagnosis of Cancers, Kingdom of Saudi Arabia
| | - P Ramamurthy
- University of Madras, National Centre for Ultrafast Processes, Taramani Campus, Chennai 600113, India
| | | | - K M Ganesh
- Kidwai Memorial Institute of Oncology, Bangalore 560029, India
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29
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Native Fluorescence and Time Resolved Fluorescence Spectroscopic Characterization of Normal and Malignant Oral Tissues Under UV Excitation—an In Vitro Study. J Fluoresc 2013; 24:613-23. [DOI: 10.1007/s10895-013-1335-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Accepted: 11/20/2013] [Indexed: 10/26/2022]
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30
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Fluorescence spectroscopic characterization of salivary metabolites of oral cancer patients. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 130:153-60. [PMID: 24333763 DOI: 10.1016/j.jphotobiol.2013.11.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 11/04/2013] [Accepted: 11/07/2013] [Indexed: 02/05/2023]
Abstract
A pilot study has been carried out using human saliva in differentiating the normal subjects from that of oral squamous cell carcinoma (OSCC) patients, using the autofluorescence spectroscopy at 405nm excitation. A markable difference in the spectral signatures between the saliva of normal subjects and that of oral cancer patients has been noticed. The possible reasons for the altered spectral signature may be due to the presence of endogenous porphyrin, NAD(P)H and FAD in the exfoliated cells from saliva. The elevated level of porphyrin in saliva of OSCC patients may be attributed to the disturbances in the amino acid degradation pathway and heme biosynthetic pathway, during the transformation of normal into malignant cells. The integrated area under the curve of fluorescence emission spectrum at 405nm excitation and also fluorescence excitation spectrum for 625nm emission were compared for the saliva of normal and oral cancer patients. The area under the curve for the emission spectrum provides 85.7% sensitivity and 93.3% specificity, where as the fluorescence excitation spectrum discriminates the same with 84.1% sensitivity and 93.2% specificity.
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31
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Sahu A, Dalal K, Naglot S, Aggarwal P, Murali Krishna C. Serum based diagnosis of asthma using Raman spectroscopy: an early phase pilot study. PLoS One 2013; 8:e78921. [PMID: 24250817 PMCID: PMC3826756 DOI: 10.1371/journal.pone.0078921] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 09/17/2013] [Indexed: 01/05/2023] Open
Abstract
The currently prescribed tests for asthma diagnosis require compulsory patient compliance, and are usually not sensitive to mild asthma. Development of an objective test using minimally invasive samples for diagnosing and monitoring of the response of asthma may help better management of the disease. Raman spectroscopy (RS) has previously shown potential in several biomedical applications, including pharmacology and forensics. In this study, we have explored the feasibility of detecting asthma and determining treatment response in asthma patients, through RS of serum. Serum samples from 44 asthma subjects of different grades (mild, moderate, treated severe and untreated severe) and from 15 reference subjects were subjected to Raman spectroscopic analysis and YKL-40 measurements. The force expiratory volume in 1 second (FEV1) values were used as gold standard and the serum YKL-40 levels were used as an additional parameter for diagnosing the different grades of asthma. For spectral acquisition, serum was placed on a calcium fluoride (CaF2) window and spectra were recorded using Raman microprobe. Mean and difference spectra comparisons indicated significant differences between asthma and reference spectra. Differences like changes in protein structure, increase in DNA specific bands and increased glycosaminoglycans-like features were more prominent with increase in asthma severity. Multivariate tools using Principal-component-analysis (PCA) and Principal-component based-linear-discriminant analysis (PC-LDA) followed by Leave-one-out-cross-validation (LOOCV), were employed for data analyses. PCA and PC-LDA results indicate separation of all asthma groups from the reference group, with minor overlap (19.4%) between reference and mild groups. No overlap was observed between the treated severe and untreated severe groups, indicating that patient response to treatment could be determined. Overall promising results were obtained, and a large scale validation study on random subjects is warranted before the routine clinical usage of this technique.
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Affiliation(s)
- Aditi Sahu
- KS-04, Chilakapati Laboratory, ACTREC, Kharghar, Navi Mumbai, India
| | - Krishna Dalal
- Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Sarla Naglot
- Department of Biophysics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - Parveen Aggarwal
- Department of Emergency Medicine, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, India
| | - C. Murali Krishna
- KS-04, Chilakapati Laboratory, ACTREC, Kharghar, Navi Mumbai, India
- * E-mail:
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32
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Sahu A, Sawant S, Mamgain H, Krishna CM. Raman spectroscopy of serum: an exploratory study for detection of oral cancers. Analyst 2013; 138:4161-74. [DOI: 10.1039/c3an00308f] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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33
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Rajasekaran R, Aruna PR, Koteeswaran D, Padmanabhan L, Muthuvelu K, Rai RR, Thamilkumar P, Murali Krishna C, Ganesan S. Characterization and diagnosis of cancer by native fluorescence spectroscopy of human urine. Photochem Photobiol 2012; 89:483-91. [PMID: 22971002 DOI: 10.1111/j.1751-1097.2012.01239.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 09/06/2012] [Indexed: 11/28/2022]
Abstract
Urine is one of the diagnostically important bio fluids, as it has different metabolites in it, where many of them are native fluorophores. Native fluorescence characteristics of human urine samples were studied using excitation-emission matrices (EEMs) over a range of excitation and emission wavelengths, and emission spectra at 405 nm excitation, to discriminate patients with cancer from the normal subjects. The fluorescence spectra of urine samples of cancer patients exhibit considerable spectral differences in both EEMs and emission spectra with respect to normal subjects. Different ratios were calculated using the fluorescence intensity values of the emission spectra and they were used as input variables for a multiple linear discriminant analysis across different groups. The discriminant analysis classifies 94.7% of the original grouped cases and 94.1% of the cross-validated grouped cases correctly. Based on the fluorescence emission characteristics of urine and statistical analysis, it may be concluded that the fluorophores nicotinamide adenine dinucleotide (NADH) and flavins may be considered as metabolomic markers of cancer.
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34
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Chen P, Zhang L, Zhang F, Liu JT, Bai H, Tang GQ, Lin L. Spectral discrimination between normal and leukemic human sera using delayed luminescence. BIOMEDICAL OPTICS EXPRESS 2012; 3:1787-1792. [PMID: 22876344 PMCID: PMC3409699 DOI: 10.1364/boe.3.001787] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/06/2012] [Accepted: 04/27/2012] [Indexed: 06/01/2023]
Abstract
In this work, photoinduced delayed luminescence (DL) was used to distinguish serum samples of patients with acute lymphoblastic leukemia from those of healthy volunteers. DL decay kinetics of human serum samples was measured using a homebuilt ultraweak luminescence detection system. It was found a significant difference in the weight distribution of the decay rate between normal and leukemic serum samples. A comparison of the DL kinetics parameters including the initial intensity, the peak decay rate, and the peak weight value was used in making discrimination between normal and leukemic human sera. Results in this work contribute to the development of a novel optical method for the early diagnosis of leukemia.
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35
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Dramićanin T, Lenhardt L, Zeković I, Dramićanin MD. Support Vector Machine on fluorescence landscapes for breast cancer diagnostics. J Fluoresc 2012; 22:1281-9. [PMID: 22678149 DOI: 10.1007/s10895-012-1070-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 05/29/2012] [Indexed: 11/30/2022]
Abstract
Excitation-emission matrices (EEM) and total synchronous fluorescence spectra (SFS) of normal and malignant breast tissue specimens are measured in UV-VIS spectral region to serve as data inputs in development of Support Vector Machine (SVM) based breast cancer diagnostics tool. Various input data combinations are tested for classification accuracy using SVM prediction against histopathology findings to discover the best combination regarding diagnostics sensitivity and specificity. It is shown that with EEM data SVM provided 67% sensitivity and 62% specificity diagnostics. With SFS data SVM provided 100% sensitivity and specificity for a several input data combinations. Among these combinations those that require minimal data inputs are identified.
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Affiliation(s)
- Tatjana Dramićanin
- Vinča Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
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36
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AlSalhi M, Masilamani V, Trinka V, Elangovan M, Kochupillai V, Shah N. Detection of Cancer by Optical Analysis of Body Fluids — A Single Blind Study. Technol Cancer Res Treat 2011; 10:145-52. [DOI: 10.7785/tcrt.2012.500189] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
This paper pertains to a new technique based on fluorescence emission spectra (FES), and stokes shift spectra (SSS) of blood plasma, acetone extract of cellular fraction, and urine. These samples were collected from 60 cancer patients of different etiology and 60 age adjusted controls for a single blind study. A set of ratio parameters were obtained from the above spectra (FES and SSS of above three sets of samples), based on the relative intensity of biofluorophores like tryptophan, tyrosine, flavin etc. It was found that these biofluorophores go out of proportion for malignancy of any etiolology. The study was done in two phases: calibration and validation. Based on a certain set of ratios obtained by simple statistical analysis, in the calibration phase, the blinded samples of validation phase were spectrally analysed and classified as normal or malignant. The scoring done by independent oncologists (who were not involved in any part of this new technique) yielded an overall sensitivity of 87%, and specificity of 83%. The result indicate that new optical spectroscopic techniques could be a simple, non-invasive protocol for detection of cancers, particularly in symptomatic cases; or for monitoring the post treated cases of cancer.
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Affiliation(s)
- M. AlSalhi
- P.O Box 2455, College of science, Department of Physics, King Saud University, Riyadh, 1145 Kingdom of Saudi Arabia
| | - V. Masilamani
- P.O Box 2455, College of science, Department of Physics, King Saud University, Riyadh, 1145 Kingdom of Saudi Arabia
| | - V. Trinka
- Thendrel Inc., 13114 Moss Ranch lane, Fairfax, VA 22033 USA
| | - M. Elangovan
- Thendrel Inc., 13114 Moss Ranch lane, Fairfax, VA 22033 USA
| | | | - N. Shah
- Gujarat Cancer Research Institute Ahmedabad, India
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37
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Croce AC, Santamaria G, De Simone U, Lucchini F, Freitas I, Bottiroli G. Naturally-occurring porphyrins in a spontaneous-tumour bearing mouse model. Photochem Photobiol Sci 2011; 10:1189-95. [DOI: 10.1039/c0pp00375a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Fisher SE, Harris AT, Khanna N, Sule-Suso J. Vibrational Spectroscopy: What Does the Clinician Need? BIOMEDICAL APPLICATIONS OF SYNCHROTRON INFRARED MICROSPECTROSCOPY 2010. [DOI: 10.1039/9781849731997-00001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Sheila E. Fisher
- Clinical Research Fellow, Section of Experimental Therapeutics, University of Leeds Room 6.01, Clinical Sciences Building, St James's University Hospital, Leeds, LS9 7JT, UK and Hon Senior Research Fellow, School of Health Studies, University of Bradford UK
| | - Andrew T Harris
- Cancer-Research UK Research Training Fellow Oral Biology, Leeds Dental Institute, University of Leeds UK
| | - Nitish Khanna
- Specialist Registrar in Medical Microbiology Western Infirmary Glasgow, Scotland UK
| | - Josep Sule-Suso
- Associate Specialist and Senior Lecturer in Oncology Cancer Centre, University Hospital of North Staffordshire and Keele University, Stoke-on-Trent UK
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39
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Harris AT, Rennie A, Waqar-Uddin H, Wheatley SR, Ghosh SK, Martin-Hirsch DP, Fisher SE, High AS, Kirkham J, Upile T. Raman spectroscopy in head and neck cancer. HEAD & NECK ONCOLOGY 2010; 2:26. [PMID: 20923567 PMCID: PMC2958871 DOI: 10.1186/1758-3284-2-26] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Accepted: 10/05/2010] [Indexed: 11/10/2022]
Abstract
In recent years there has been much interest in the use of optical diagnostics in cancer detection. Early diagnosis of cancer affords early intervention and greatest chance of cure. Raman spectroscopy is based on the interaction of photons with the target material producing a highly detailed biochemical 'fingerprint' of the sample. It can be appreciated that such a sensitive biochemical detection system could confer diagnostic benefit in a clinical setting. Raman has been used successfully in key health areas such as cardiovascular diseases, and dental care but there is a paucity of literature on Raman spectroscopy in Head and Neck cancer. Following the introduction of health care targets for cancer, and with an ever-aging population the need for rapid cancer detection has never been greater. Raman spectroscopy could confer great patient benefit with early, rapid and accurate diagnosis. This technique is almost labour free without the need for sample preparation. It could reduce the need for whole pathological specimen examination, in theatre it could help to determine margin status, and finally peripheral blood diagnosis may be an achievable target.
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Affiliation(s)
- Andrew T Harris
- Department of Ear, Nose and Throat/Head and Neck Surgery, Calderdale and Huddersfield NHS Trust, Huddersfield UK.
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40
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Study of Blood Porphyrin Spectral Profile for Diagnosis of Chronic Renal Failure. J Fluoresc 2010; 20:665-9. [DOI: 10.1007/s10895-010-0600-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Accepted: 01/29/2010] [Indexed: 01/08/2023]
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41
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Sivabalan S, Vedeswari CP, Jayachandran S, Koteeswaran D, Pravda C, Aruna PR, Ganesan S. In vivo native fluorescence spectroscopy and nicotinamide adinine dinucleotide/flavin adenine dinucleotide reduction and oxidation states of oral submucous fibrosis for chemopreventive drug monitoring. JOURNAL OF BIOMEDICAL OPTICS 2010; 15:017010. [PMID: 20210484 DOI: 10.1117/1.3324771] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Native fluorescence spectroscopy has shown potential to characterize and diagnose oral malignancy. We aim at extending the native fluorescence spectroscopy technique to characterize normal and oral submucous fibrosis (OSF) patients under pre- and post-treated conditions, and verify whether this method could also be considered in the monitoring of therapeutic prognosis noninvasively. In this study, 28 normal subjects and 28 clinically proven cases of OSF in the age group of 20 to 40 years are diagnosed using native fluorescence spectroscopy. The OSF patients are given dexamethasone sodium phosphate and hyaluronidase twice a week for 6 weeks, and the therapeutic response is monitored using fluorescence spectroscopy. The fluorescence emission spectra of normal and OSF cases of both pre- and post-treated conditions are recorded in the wavelength region of 350 to 600 nm at an excitation wavelength of 330 nm. The statistical significance is verified using discriminant analysis. The oxidation-reduction ratio of the tissue is also calculated using the fluorescence emission intensities of flavin adenine dinucleotide and nicotinamide adinine dinucleotide at 530 and 440 nm, respectively, and they are compared with conventional physical clinical examinations. This study suggests that native fluorescence spectroscopy could also be extended to OSF diagnosis and therapeutic prognosis.
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Affiliation(s)
- Shanmugam Sivabalan
- Anna University Chennai, Department of Physics, Division of Medical Physics and Lasers, Chennai, India
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42
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Ebenezar J, Aruna P, Ganesan S. Synchronous fluorescence spectroscopy for the detection and characterization of cervical cancers in vitro. Photochem Photobiol 2009; 86:77-86. [PMID: 19845540 DOI: 10.1111/j.1751-1097.2009.00628.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objective of this study was to assess the diagnostic potential of synchronous fluorescence (SF) spectroscopy (SFS) technique for the detection and characterization of normal and different malignancy stages of moderately differentiated squamous cell carcinoma (MDSCC), poorly differentiated squamous cell carcinoma (PDSCC) cervical tissues. SF spectra were measured from 45 biopsies from 30 patients in vitro. Characteristic, highly resolved peaks and significant spectral differences between normal and MDSCC, PDSCC cervical tissues were obtained. Nine potential ratios were calculated and used as input variables for a discriminant analysis across different groups. The potentiality of the SFS technique was estimated by two discriminant analyses. Discriminant analysis I performed across normal and abnormal (including MDSCC and PDSCC) cervical tissues classified as 100% both original and the cross-validated grouped cases. In discriminant analysis II performed across the three groups, normal, MDSCC and PDSCC, 100% of both original and the cross-validated grouped cases were correctly classified. Using the SFS technique, one can obtain all the key biochemical markers such as tryptophan, collagen, hemoglobin, reduced form of nicotinamide adenine dinucleotide and flavin adenine dinucleotide in a single scan and hence they can be targeted as tumor markers in the detection of normal from abnormal cervical tissues.
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Affiliation(s)
- Jeyasingh Ebenezar
- Division of Medical Physics & Lasers, Department of Physics, Anna University, Chennai, India
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43
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Harris AT, Lungari A, Needham CJ, Smith SL, Lones MA, Fisher SE, Yang XB, Cooper N, Kirkham J, Smith DA, Martin-Hirsch DP, High AS. Potential for Raman spectroscopy to provide cancer screening using a peripheral blood sample. HEAD & NECK ONCOLOGY 2009; 1:34. [PMID: 19761601 PMCID: PMC2753303 DOI: 10.1186/1758-3284-1-34] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Accepted: 09/17/2009] [Indexed: 12/12/2022]
Abstract
Cancer poses a massive health burden with incidence rates expected to double globally over the next decade. In the United Kingdom screening programmes exists for cervical, breast, and colorectal cancer. The ability to screen individuals for solid malignant tumours using only a peripheral blood sample would revolutionise cancer services and permit early diagnosis and intervention. Raman spectroscopy interrogates native biochemistry through the interaction of light with matter, producing a high definition biochemical 'fingerprint' of the target material. This paper explores the possibility of using Raman spectroscopy to discriminate between cancer and non-cancer patients through a peripheral blood sample. Forty blood samples were obtained from patients with Head and Neck cancer and patients with respiratory illnesses to act as a positive control. Raman spectroscopy was carried out on all samples with the resulting spectra being used to build a classifier in order to distinguish between the cancer and respiratory patients' spectra; firstly using principal component analysis (PCA)/linear discriminant analysis (LDA), and secondly with a genetic evolutionary algorithm. The PCA/LDA classifier gave a 65% sensitivity and specificity for discrimination between the cancer and respiratory groups. A sensitivity score of 75% with a specificity of 75% was achieved with a 'trained' evolutionary algorithm. In conclusion this preliminary study has demonstrated the feasibility of using Raman spectroscopy in cancer screening and diagnostics of solid tumours through a peripheral blood sample. Further work needs to be carried out for this technique to be implemented in the clinical setting.
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Affiliation(s)
- Andrew T Harris
- Oral Biology, Leeds Dental Institute, University of Leeds, Leeds, UK.
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Saraswathy A, Jayasree R, Baiju K, Gupta AK, Pillai VM. Optimum Wavelength for the Differentiation of Brain Tumor Tissue Using Autofluorescence Spectroscopy. Photomed Laser Surg 2009; 27:425-33. [DOI: 10.1089/pho.2008.2316] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ariya Saraswathy
- Department of Optoelectronics, University of Kerala, Kariavattom, Trivandrum, Kerala, India
| | - R.S. Jayasree
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - K.V. Baiju
- Department of Statistics, University of Kerala, Kariavattom, Trivandrum, Kerala, India
| | - Arun Kumar Gupta
- Department of Imaging Sciences and Interventional Radiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India
| | - V.P. Mahadevan Pillai
- Department of Optoelectronics, University of Kerala, Kariavattom, Trivandrum, Kerala, India
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Rai L, Kumar P, Mahato KK, Kartha VB, Santhosh C. Serum protein profile study of normal and cervical cancer subjects by high performance liquid chromatography with laser-induced fluorescence. JOURNAL OF BIOMEDICAL OPTICS 2008; 13:054062. [PMID: 19149028 DOI: 10.1117/1.2992166] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
High performance liquid chromatography with high sensitivity laser-induced fluorescence detection is used to study the protein profiles of serum samples from healthy volunteers and cervical cancer subjects. The protein profiles are subjected to principal component analysis (PCA). PCA shows that the large number of chromatograms of a given class of serum samples--say normal/malignant--can be expressed in terms of a small number of factors (principal components). Three parameters--scores of the factors, squared residuals, and Mahalanobis distance--are derived from PCA. The parameters are observed to have a narrow range for protein profiles of standard calibration sets formed from groups of clinically confirmed normal/malignant classes. Limit tests using match/no match of the parameters of any test sample with parameters derived for the standard calibration sets give very good discrimination between malignant and normal samples with high sensitivity (approximately 100%) aand specificity (approximately 94%).
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Kalaivani R, Masilamani V, Sivaji K, Elangovan M, Selvaraj V, Balamurugan S, Al-Salhi M. Fluorescence Spectra of Blood Components for Breast Cancer Diagnosis. Photomed Laser Surg 2008; 26:251-6. [DOI: 10.1089/pho.2007.2162] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- R. Kalaivani
- Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai, India
| | - V. Masilamani
- Department of Physics, King Saud University, Riyadh, Saudi Arabia
| | - K. Sivaji
- Department of Nuclear Physics, University of Madras, Guindy Campus, Chennai, India
| | | | - V. Selvaraj
- National Institute of Epidemiology, ICMR, Chennai, India
| | | | - M.S. Al-Salhi
- Department of Physics, King Saud University, Riyadh, Saudi Arabia
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Cancer Diagnosis at Early Stage Using Serum Derivative Fluorescence Emission Spectra. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2007. [DOI: 10.1016/s1872-2040(08)60010-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Kamath SD, Mahato KK. Optical pathology using oral tissue fluorescence spectra: classification by principal component analysis and k-means nearest neighbor analysis. JOURNAL OF BIOMEDICAL OPTICS 2007; 12:014028. [PMID: 17343503 DOI: 10.1117/1.2437738] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The spectral analysis and classification for discrimination of pulsed laser-induced autofluorescence spectra of pathologically certified normal, premalignant, and malignant oral tissues recorded at a 325-nm excitation are carried out using MATLAB@R6-based principal component analysis (PCA) and k-means nearest neighbor (k-NN) analysis separately on the same set of spectral data. Six features such as mean, median, maximum intensity, energy, spectral residuals, and standard deviation are extracted from each spectrum of the 60 training samples (spectra) belonging to the normal, premalignant, and malignant groups and they are used to perform PCA on the reference database. Standard calibration models of normal, premalignant, and malignant samples are made using cluster analysis. We show that a feature vector of length 6 could be reduced to three components using the PCA technique. After performing PCA on the feature space, the first three principal component (PC) scores, which contain all the diagnostic information, are retained and the remaining scores containing only noise are discarded. The new feature space is thus constructed using three PC scores only and is used as input database for the k-NN classification. Using this transformed feature space, the centroids for normal, premalignant, and malignant samples are computed and the efficient classification for different classes of oral samples is achieved. A performance evaluation of k-NN classification results is made by calculating the statistical parameters specificity, sensitivity, and accuracy and they are found to be 100, 94.5, and 96.17%, respectively.
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Affiliation(s)
- Sudha D Kamath
- Center for Laser Spectroscopy, KMC Life Sciences Center, Manipal Academy of Higher Education, Manipal 576 104, India
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Diagaradjane P, Yaseen MA, Yu J, Wong MS, Anvari B. Synchronous fluorescence spectroscopic characterization of DMBA-TPA-induced squamous cell carcinoma in mice. JOURNAL OF BIOMEDICAL OPTICS 2006; 11:014012. [PMID: 16526889 DOI: 10.1117/1.2167933] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
While initially confined to the epidermis, squamous cell carcinoma can eventually penetrate into the underlying tissue if not diagnosed early and treated. The noninvasive early detection of the carcinoma is important to achieve a complete treatment of the disease. Of the various non-invasive optical techniques, the synchronous fluorescence (SF) technique is considered to provide a simplified spectral profile with more sharp spectral signatures of the endogenous fluorophores in complex systems. The potential use of the SF technique in the characterization of the sequential tissue transformation in 7,12-dimethylbenz(a)anthracene-12-O-tetradecanoylphorbol-13-acetate (DMBA-TPA)-induced mouse skin tumor model in conjunction with simple statistical analysis is explored. The SF spectra show distinct differences during the earlier weeks of the tumor-induction period. Intensity ratio variables are calculated and used in three discriminant analyses. All the discriminant analyses show better classification results with accuracy greater than 80%. From the observed differences in the spectral characteristics and the ratio variables that resulted in better classification between groups, it is concluded that tryptophan, collagen, and NADH are the key fluorophores that undergo changes during tissue transformation process and hence they can be targeted as tumor markers to diagnose normal from abnormal tissues using the SF technique.
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Affiliation(s)
- Parmeswaran Diagaradjane
- Rice University, Department of Bioengineering, MS-142, P.O. Box 1892,, Houston, Texas 77251, USA
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Diagaradjane P, Yaseen MA, Yu J, Wong MS, Anvari B. Autofluorescence characterization for the early diagnosis of neoplastic changes in DMBA/TPA-induced mouse skin carcinogenesis. Lasers Surg Med 2005; 37:382-95. [PMID: 16240416 DOI: 10.1002/lsm.20248] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND AND OBJECTIVE Squamous cell carcinoma (SCC), the second most common skin cancer, usually remains confined to the epidermis for some time but eventually penetrates the underlying tissues, if left untreated. The non-invasive early detection of the SCC is important for appropriate therapeutic strategies. In this study, we aim to characterize the tissue transformation in DMBA/TPA induced mouse skin tumor model using autofluorescence excitation emission matrix (EEM) in conjunction with a multivariate statistical method for early detection of the neoplastic changes. STUDY DESIGN/MATERIALS AND METHODS The fluorescence EEM from experimental group (n = 40; DMBA/TPA application), control group (n = 6; acetone application), and the blank group (n = 6; no application of DMBA/TPA or acetone) were measured every week using a spectrofluorometer coupled with a fiber optic bundle. The EEM was recorded at excitation wavelengths from 280 to 460 nm at 10 nm intervals and the fluorescence emission was scanned from 300 to 750 nm. The fluorescence emission characteristics corresponding to different fluorophores were extracted from the EEM and the spectral data were used in a multiple/linear discriminant statistical algorithm. RESULTS The changes in the fluorescence emission intensity were observed as early as the 1st week of tumor initiation by DMBA. Morphological changes as well as differences in the gross appearance of the skin surface were observed during the entire tumor initiation and promotion period of 15 weeks. The statistical analysis was performed for each excitation wavelength in the EEM and better classification accuracy was obtained for 280 and 410 nm excitations, corresponding to tryptophan and endogenous porphyrins, respectively. The statistical analysis of the combination wavelengths resulted in 11.6% increase in the overall classification accuracy when compared to the highest classification accuracy obtained with single wavelength analysis. CONCLUSION The intensity ratio mapping using the combination of emission intensities of key fluorophores such as tryptophan, collagen, NADH, and endogenous porphyrins from the measured EEM in conjunction with a simple multivariate statistical analysis can be used as a potential tool for the discrimination of early neoplastic changes with improved classification accuracy. Tryptophan and endogenous porphyrins may be used as biomarkers for the discrimination of early neoplastic changes when single wavelength excitations are used.
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