1
|
Chalissery P, Homann C, Stepp H, Eisel M, Aumiller M, Rühm A, Buchner A, Sroka R. Influence of vitamins and food on the fluorescence spectrum of human urine. Lasers Surg Med 2024; 56:485-495. [PMID: 38605494 DOI: 10.1002/lsm.23785] [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: 12/07/2023] [Revised: 03/18/2024] [Accepted: 03/23/2024] [Indexed: 04/13/2024]
Abstract
OBJECTIVES Fluorescence spectroscopy of human urine is a method with the potential to gain importance as a diagnostic tool in the medical field, e.g., for measuring Coproporphyrin III (CPIII) as an indicator of cancer and acute types of porphyria. Food can change human urine's color, which could influence the urine fluorescence spectrum and the detection of CPIII in urine. To determine if there is a noticeable influence on the urine fluorescence spectrum or on the detection of CPIII in urine, 16 vitamin supplements, and three food items were tested. Such investigation may also prevent false interpretation of measured data. METHODS Urine samples were collected before and after (overnight, ca. 8 h) intake of each test substance. Samples were investigated by fluorescence spectrum analysis. At excitation wavelengths from 300 to 500 nm and emission wavelengths from 400 to 700 nm excitation-emission-matrices were measured. Data obtained from urine before intake were compared to the data from overnight urine. Furthermore, the investigation of any interference with the CPIII concentration was performed at an excitation wavelength of 407 ± 3 nm and emission wavelengths of 490-800 nm. RESULTS Only vitamin B2, but none of the other tested substances, showed noticeable influence on the urine fluorescence spectrum. None of the tested substances showed noticeable interference with the recovery rate of CPIII. CONCLUSIONS The correct interpretation of measured data by fluorescence spectroscopy is possible with the exception if vitamin B2 supplementation was performed; thus, the consumption of vitamin B2 supplements before fluorescence testing of the patient's urine should be avoided and/or must be requested. CPIII concentrations could reliably be measured in all cases.
Collapse
Affiliation(s)
- Praveen Chalissery
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Christian Homann
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
- FerroSens GmbH, Munich, Germany
| | - Herbert Stepp
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Maximilian Eisel
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
- FerroSens GmbH, Munich, Germany
| | - Maximilian Aumiller
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Adrian Rühm
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Alexander Buchner
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| | - Ronald Sroka
- Laser-Forschungslabor, LIFE-Center, University Hospital, LMU Munich, Planegg, Germany
- Department of Urology, University Hospital, LMU Munich, Munich, Germany
| |
Collapse
|
2
|
Corti A, Pasquale MA, García Einschlag FS. Screening of neoplastic diseases by statistical analysis of urine fluorescence spectroscopic data. Application of multivariate techniques for enhancing classification. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2023; 238:112598. [PMID: 36455461 DOI: 10.1016/j.jphotobiol.2022.112598] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/04/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
The composition of human fluids is modified during the course of neoplastic diseases. Urine analysis offers the advantage of being a noninvasive method for which samples are easily and routinely collected from patients. In this work, urine fluorescence spectra recorded upon excitation at 405 nm were obtained from healthy volunteers and individuals with different oncologic pathologies. A large number of indexes, i.e., parameters obtained from spectral data which assist spectral features characterization, were developed to classify healthy and pathological populations. The discrimination ability of simple predictive indexes, obtained from spectra pretreated with different normalization procedures and by taking their derivatives, was statistically assessed. In addition, multivariate methods, such as principal component analysis and multivariate curve resolution by alternating least squares, were used to develop more elaborate indexes for distinguishing between healthy and pathological populations. All indexes were systematically evaluated on a statistical basis by in lab-developed routines capable of detecting outliers, judging the normal distribution of the indexes, evaluating variance homogeneity, testing the difference between the means of healthy and pathological populations, as well as performing a receiver operator curve analysis to assess the classification power of each index. Those indexes with the best performances were further combined to perform a linear discriminant analysis, which yielded a powerful classification algorithm with an area under the receiver operator curve of 0.986, a sensitivity of 97.7%, a specificity of 100%, and an overall accuracy of 98.8%. The present study shows that the statistical analysis of urine fluorescence data with a proper combination of multivariate techniques bears a high potential to develop massive screening tests for the early detection of oncologic pathologies.
Collapse
Affiliation(s)
- Agustina Corti
- Departamento de Física, Facultad de Ciencias Exactas, UNLP, La Plata, Argentina; Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, UNLP, CONICET), Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina.
| | - Miguel A Pasquale
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, UNLP, CONICET), Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina
| | - Fernando S García Einschlag
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Departamento de Química, Facultad de Ciencias Exactas, UNLP, CONICET), Sucursal 4, Casilla de Correo 16, 1900 La Plata, Argentina
| |
Collapse
|
3
|
Metabolite Characteristics in Tongue Coating from Damp Phlegm Pattern in Patients with Gastric Precancerous Lesion. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:5515325. [PMID: 34122594 PMCID: PMC8189775 DOI: 10.1155/2021/5515325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/12/2021] [Accepted: 05/21/2021] [Indexed: 12/23/2022]
Abstract
Objective In this study, we analyzed the metabolite profile of the tongue coating of patients having gastric precancerous lesion (GPL) with damp phlegm pattern and proposed a mechanism of pathological transition. Methods The changes in tongue-coating metabolites in patients with GPL damp phlegm pattern were analyzed using GC-TOF-MS and UHPLC-QE-MS metabolomics methods. Results When compared with 20 patients who did not exhibit a nondamp phlegm pattern, 12 metabolites were highly expressed and 10 metabolites were under expressed in 40 cases of damp phlegm pattern, of which involved 9 metabolic pathways. Compared with 15 healthy people, 134 metabolites were upregulated and 3 metabolites were downregulated in 40 cases exhibiting a damp phlegm pattern, of which involved 17 metabolic pathways. The patients with damp phlegm pattern were compared with nondamp phlegm pattern patients and healthy people, the main differential metabolites were primarily lipids and lipid-like molecules, and the main differential metabolic pathways were related to glycerophospholipid metabolism. In the glycerophospholipid metabolism, the metabolites with changes were phosphatidylethanolamine and lysoPC(18 : 1 (9z)). Among them, phosphatidylethanolamine exists in the synthesis stage of glycerophospholipid metabolism. Conclusions Abnormal expression of lipids and lipid-like molecules, as the major metabolic change, was involved in the formation of GPL patients with damp phlegm pattern.
Collapse
|
4
|
Schiffmann N, Wormser EM, Brumfeld V, Addadi Y, Pinkas I, Yallapragada VJ, Aflalo ED, Sagi A, Palmer BA, Weiner S, Addadi L. Characterization and possible function of an enigmatic reflector in the eye of the shrimp Litopenaeus vannamei. Faraday Discuss 2020; 223:278-294. [PMID: 32748932 DOI: 10.1039/d0fd00044b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Reflective assemblies of high refractive index organic crystals are used to produce striking optical phenomena in organisms based on light reflection and scattering. In aquatic animals, organic crystal-based reflectors are used both for image-formation and to increase photon capture. Here we report the characterization of a poorly-documented reflector in the eye of the shrimp L. vannamei lying 150 μm below the retina, which we term the proximal reflective layer (PR-layer). The PR-layer is made from a dense but disordered array of polycrystalline isoxanthopterin nanoparticles, similar to those recently reported in the tapetum of the same animal. Each spherical nanoparticle is composed of numerous isoxanthopterin single crystal plates arranged in concentric lamellae around an aqueous core. The highly reflective plate faces of the crystals are all aligned tangentially to the particle surface with the optical axes projecting radially outwards, forming a birefringent spherulite which efficiently scatters light. The nanoparticle assemblies form a broadband reflective sheath around the screening pigments of the eye, resulting in pronounced eye-shine when the animal is viewed from a dorsal-posterior direction, rendering the eye pigments inconspicuous. We assess possible functions of the PR-layer and conclude that it likely functions as a camouflage device to conceal the dark eye pigments in an otherwise largely transparent animal.
Collapse
Affiliation(s)
- Nathan Schiffmann
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel.
| | - Eyal Merary Wormser
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Vlad Brumfeld
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Yoseph Addadi
- Department of Life Sciences Core Facilities, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Iddo Pinkas
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | | | - Eliahu D Aflalo
- Department of Life Sciences, Ben-Gurion University of the Negev, 8410501, Beer-Sheva, Israel and Department of Life Sciences, Achva Academic College, Arugot, Israel
| | - Amir Sagi
- Department of Life Sciences, Ben-Gurion University of the Negev, 8410501, Beer-Sheva, Israel and The National Institute for Biotechnology in the Negev, Ben-Gurion University of the Negev, Beer-Sheva, 8410501, Israel
| | - Benjamin A Palmer
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel.
| | - Steve Weiner
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel.
| | - Lia Addadi
- Department of Structural Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel.
| |
Collapse
|
5
|
Baxter-Parker G, Chu A, Petocz P, Samman S, Gieseg SP. Simultaneous analysis of neopterin, kynurenine and tryptophan by amine-HPLC shows minor oxidative stress from short-term exhaustion exercise. Pteridines 2019. [DOI: 10.1515/pteridines-2019-0003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Abstract
Introduction: Neopterin, kynurenine and tryptophan can be used to measure activation of monocytes and macrophages during immunological events such as exercise inducing inflammation. Endurance exercise and high-impact sports have shown significant increases in these biomarkers. Measurement is typically conducted by high-performance liquid chromatography (HPLC) using C18 or SCX columns. However, kynurenine and tryptophan are not measured simultaneously to neopterin using these separation systems. Here we have used an amine column for separation and simultaneous determination of neopterin, kynurenine and tryptophan.
Methods: Optimization and validation for the amine-HPLC method was conducted using plasma from 43 participants subjected to a short maximal exercise bicycling regime or rest period. The order of exercise and rest was randomized and separated by a 3-5 week washout period.
Results: Using an amine column developed with ammonium acetate formic acid (33%) and acetonitrile (72%) provided optimal separation and run time for analysis. Neopterin increased significantly post-exercise and subsided to baseline by 30 minutes. Total neopterin remained elevated until 60 minutes following exercise.
Conclusion: Amine-HPLC can be used for simultaneous determination of kynurenine, tryptophan and neopterin in plasma. Short intense exercise causes a significant increase in plasma neopterin suggesting a prolonged activation of monocytes and macrophages.
Collapse
Affiliation(s)
- Gregory Baxter-Parker
- School of Biological Sciences , University of Canterbury , Christchurch , 8140 , New Zealand
| | - Anna Chu
- Department of Human Nutrition , University of Otago , Dunedin , 9016 , New Zealand
| | - Peter Petocz
- Department of Statistics , Macquaire University , Sydney , 2006 , NSW, Australia
| | - Samir Samman
- Department of Human Nutrition , University of Otago , Dunedin , 9016 , New Zealand
- School of Life and Environmental Sciences , University of Sydney , Sydney , 2109 , NSW, Australia
| | - Steven P. Gieseg
- School of Biological Sciences , University of Canterbury , Christchurch , 8140 , New Zealand
| |
Collapse
|
6
|
Kumar K, Tarai M, Mishra AK. Unconventional steady-state fluorescence spectroscopy as an analytical technique for analyses of complex-multifluorophoric mixtures. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.09.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
7
|
Burton C, Shi H, Ma Y. Development of a high-performance liquid chromatography – Tandem mass spectrometry urinary pterinomics workflow. Anal Chim Acta 2016; 927:72-81. [DOI: 10.1016/j.aca.2016.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 05/01/2016] [Accepted: 05/02/2016] [Indexed: 10/21/2022]
|
8
|
A rebuttal to “A comment to ‘Normalization of urinary pteridines by urine specific gravity for early cancer detection’ [Clin. Chim. Acta 435 (2014) 42–47]”. Clin Chim Acta 2015; 438:415-7. [DOI: 10.1016/j.cca.2014.08.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 08/25/2014] [Indexed: 11/20/2022]
|
9
|
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]
|
10
|
Krajíček J, Kozlík P, Exnerová A, Štys P, Bursová M, Čabala R, Bosáková Z. Capillary electrophoresis of pterin derivatives responsible for the warning coloration of Heteroptera. J Chromatogr A 2014; 1336:94-100. [DOI: 10.1016/j.chroma.2014.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/04/2014] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
|
11
|
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.
Collapse
|