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Alexandrov EA, Litvinenko AL, Yastrebova ES, Strokotov DI, Nekrasov VM, Gilev KV, Chernyshev AV, Karpenko AA, Maltsev VP. 4π light scattering flow cytometry: enhancing the identification and characterization of individual cells. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:5218-5224. [PMID: 37781887 DOI: 10.1039/d3ay01171b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
The analysis of individual particles with complex morphologies from light scattering is crucial in disperse systems studies, such as blood cells. Characterization, which assumes determining particle characteristics, has a higher likelihood of succeeding in solving the inverse light-scattering problem if an instrument provides enough light-scattering data. In this study, we demonstrate how we extend the operating angular interval for the 4π Scanning Flow Cytometer (4πSFC), which measures angle-resolved light-scattering profiles (LSPs) of individual particles. The angular interval is extended by additionally measuring light scattering for the backward hemisphere. Currently, the 4πSFC setup uses three lasers, a single optical cell, and three photomultipliers. It enables the measurement of the LSP of individual particles within the angular interval of 10 to 170° for polar angles with integration over azimuth angles, which covers the spatial angle of 98.5% of the 4π angle. We demonstrate the 4πSFC's performance in measuring LSPs from the analysis of polymer beads, mature and spherized erythrocytes, and platelets. The 4πSFC has the potential to be very useful in identifying platelet dimers and granulocytes without labels, characterizing lymphocytes, monocytes, and abnormal erythrocytes.
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Affiliation(s)
- Evgeniy A Alexandrov
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Alena L Litvinenko
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Ekaterina S Yastrebova
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Dmitry I Strokotov
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Vyacheslav M Nekrasov
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Konstantin V Gilev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Andrei V Chernyshev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
| | - Andrey A Karpenko
- FSBI National Medical Research Center named after EN Meshalkin, Novosibirsk, Russian Federation
| | - Valeri P Maltsev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.
- Novosibirsk State University, Novosibirsk, Russian Federation
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2
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Yastrebova ES, Gisich AV, Nekrasov VM, Gilev KV, Strokotov DI, Chernyshev AV, Karpenko AA, Maltsev VP. A light scatter based model relating erythrocyte vesiculation to lifetime in circulation. Cytometry A 2023; 103:712-722. [PMID: 37195007 DOI: 10.1002/cyto.a.24765] [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: 04/10/2022] [Revised: 04/02/2023] [Accepted: 05/12/2023] [Indexed: 05/18/2023]
Abstract
Methods for measuring erythrocyte age distribution are not available as a simple analytical tool. Most of them utilize the fluorescence or radioactive isotopes labeling to construct the age distribution and support physicians with aging indices of donor's erythrocytes. The age distribution of erythrocyte may be a useful snapshot of patient state over 120-days period of life. Previously, we introduced the enhanced assay of erythrocytes with measurement of 48 indices in four categories: concentration/content, morphology, aging and function (10.1002/cyto.a.24554). The aging category was formed by the indices based on the evaluation of the derived age of individual cells. The derived age does not exactly mean the real age of erythrocytes and its evaluation utilizes changes of cellular morphology during a lifespan. In this study, we are introducing the improved methodological approach that allows us to retrieve the derived age of individual erythrocytes, to construct the aging distribution, and to reform the aging category consisting of eight indices. The approach is based on the analysis of the erythrocyte vesiculation. The erythrocyte morphology is analyzed by scanning flow cytometry that measures the primary characteristics (diameter, thickness, and waist) of individual cells. The surface area (S) and sphericity index (SI) are calculated from the primary characteristics and the scattering diagram SI versus S is used in the evaluation of the derived age of each erythrocyte in a sample. We developed the algorithm to evaluate the derived age that provides eight indices in the aging category based on a model using light scatter features. The novel erythrocyte indices were measured for simulated cells and blood samples of 50 donors. We determined the first-ever reference intervals for these indices.
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Affiliation(s)
- Ekaterina S Yastrebova
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Alla V Gisich
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Vyacheslav M Nekrasov
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Konstantin V Gilev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Dmitry I Strokotov
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Andrei V Chernyshev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Andrey A Karpenko
- State Research Institute of Circulation Pathology, Novosibirsk, Russian Federation
| | - Valeri P Maltsev
- Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
- Novosibirsk State University, Novosibirsk, Russian Federation
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3
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Yastrebova ES, Nekrasov VM, Gilev KV, Gisich AV, Abubakirova OA, Strokotov DI, Chernyshev AV, Karpenko AA, Maltsev VP. Erythrocyte lysis and angle-resolved light scattering measured by scanning flow cytometry result to 48 indices quantifying a gas exchange function of the human organism. Cytometry A 2023; 103:39-53. [PMID: 35349217 DOI: 10.1002/cyto.a.24554] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 01/20/2023]
Abstract
Molecular/cell level of gas exchange function assumes the accurate measurement of erythrocyte characteristics and rate constants concerning to molecules involved into the CO2 /O2 transport. Unfortunately, common hematology analyzers provide the measurement of eight indices of erythrocytes only and say little about erythrocyte morphology and nothing about rate constants of cellular function. The aim of this study is to demonstrate the ability of the Scanning Flow Cytometer (SFC) in the complete morphological analysis of mature erythrocytes and characterization of erythrocyte function via measurement of lysing kinetics. With this study we are introducing 48 erythrocyte indices. To provide the usability of application of the SFC in clinical diagnosis, we formed four categories of indices which are as follows: content/concentration (9 indices), morphology (26 indices), age (5 indices), and function (8 indices). The erythrocytes of 39 healthy volunteers were analyzed with the SFC to fix the first-ever reference intervals for the new indices introduced. The essential measurable reliability of the presented method is expressed in terms of errors of characteristics of single erythrocytes retrieved from the solution of the inverse light-scattering problem and errors of parameters retrieved from the fitting of the experimental kinetics by molecular-kinetics model of erythrocyte lysis.
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Affiliation(s)
- Ekaterina S Yastrebova
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Vyacheslav M Nekrasov
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Konstantin V Gilev
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Alla V Gisich
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Olga A Abubakirova
- Department of Vascular and Hybrid Surgery, State Research Institute of Circulation Pathology, Novosibirsk, Russian Federation
| | - Dmitry I Strokotov
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Andrey V Chernyshev
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation
| | - Andrey A Karpenko
- Department of Vascular and Hybrid Surgery, State Research Institute of Circulation Pathology, Novosibirsk, Russian Federation
| | - Valeri P Maltsev
- Cytometry and Biokinetics, Voevodsky Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation.,Physical department, Novosibirsk State University, Novosibirsk, Russian Federation
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4
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Gu Y, Wang F, Gong L, Fang M, Liu X. A nomogram incorporating red blood cell indices to predict post-stroke cognitive impairment in the intracerebral hemorrhage population. Front Aging Neurosci 2022; 14:985386. [PMID: 36185478 PMCID: PMC9520004 DOI: 10.3389/fnagi.2022.985386] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 08/26/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundPost-stroke cognitive impairment (PSCI) plagues 20–80% of stroke survivors worldwide. There is a lack of an easy and effective scoring tool to predict the risk of PSCI in intracerebral hemorrhage (ICH) patients. We aimed to develop a risk prediction model incorporating red blood cell (RBC) indices to identify ICH populations at risk of PSCI.MethodsPatients diagnosed with ICH at the stroke center were consecutively enrolled in the study as part of the development cohort from July 2017 to December 2018, and of the validation cohort from July 2019 to February 2020. Univariable and multivariable analyses were applied in the development cohort to screen the patients for PSCI risk factors. Then, a nomogram based on RBC indices and other risk factors was developed and validated to evaluate its performance in predicting PSCI occurrence.ResultsA total of 123 patients were enrolled in the development cohort, of which 69 (56.1%) were identified as PSCI, while 38 (63.3%) of 60 patients in the validation cohort were identified as PSCI. According to the multivariate analysis, seven independent risk factors, including three RBC indices (hemoglobin, mean corpuscular volume, RBC distribution width), as well as age, education level, hematoma volume, and dominant-hemisphere hemorrhage were incorporated into the model. The nomogram incorporating RBC indices displayed good discrimination and calibration. The area under the receiver operating characteristic curve was 0.940 for the development cohort and 0.914 for the validation cohort. Decision curve analysis and clinical impact curve showed that the nomogram was clinically useful.ConclusionRBC indices are independent and important predictors of PSCI. A nomogram incorporating RBC indices can be used as a reasonable and reliable graphic tool to help clinicians identify high cognition impairment-risk patients and adjust individualized therapy.
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Affiliation(s)
- Yongzhe Gu
- Department of Neurology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Fang Wang
- Department of Neurology, The Second People’s Hospital of Yibin, West China Yibin Hospital, Sichuan University, Yibin, China
| | - Li Gong
- Department of Neurology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Min Fang
- Department of Neurology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xueyuan Liu
- Department of Neurology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Xueyuan Liu,
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5
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Fischer TM. The Shape of Human Red Blood Cells Suspended in Autologous Plasma and Serum. Cells 2022; 11:cells11121941. [PMID: 35741070 PMCID: PMC9222013 DOI: 10.3390/cells11121941] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 01/27/2023] Open
Abstract
(1) Background: In almost all studies of the shape of the human red blood cell (RBC), the suspending medium was a salt solution supplemented with albumin. However, the ratio of thickness across the dimple region to the thickness of the rim (THR) depends on the albumin concentration. Values of the THR in the literature range from 0.27 to 0.627 whereas in the present work it was 0.550 or 0.601 whether measured in plasma or serum. (2) Methods: 9911 RBCs of eight donors were suspended in autologous plasma or serum. Sedimented RBCs were observed under bright field illumination at 416 nm. From the profiles of gray value, the THR was determined. (3) Results: The THR displays a wide distribution within a single blood sample. A direct correlation of THR and spontaneous curvature of the membrane is likely. The variation of the mean THR between different donors is large. The aspect ratio of RBCs viewed face-on ranged on average from 1 to 1.48. In oval RBCs, the rim is thicker along the major axis than along the minor axis, an effect increasing with increasing aspect ratio. Remodeling of the membrane skeleton occurs in vivo with a characteristic time (τ) on the order of 1 h. (4) Conclusions: Consideration of these data in models of RBC behavior might improve the agreement with observations. τ≈1 h suggests a more general type of reference configuration of the membrane skeleton than a stress free shape.
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Affiliation(s)
- Thomas M. Fischer
- Department of Experimental Physics, Saarland University, Campus E2 6, 66123 Saarbrücken, Germany; ; Tel.: +49-160-2293318
- Laboratory for Red Cell Rheology, Krummer Weg 20, 52134 Herzogenrath, Germany
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6
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Nimaev VV, Pivkina AV, Shurlygina AV, Rachkovskaya LN, Smagin AA, Yastrebova ES, Rachkovskii EE, Korolev MA, Mal'tsev VP, Letyagin AY. New Carbon-Mineral Sorbent Based on Aluminum Oxide, Polydimethylsiloxane, and Single-Wall Carbon Nanotubes: Assessment of the Effect on Erythrocytes In Vitro. Bull Exp Biol Med 2022; 172:478-482. [PMID: 35175474 DOI: 10.1007/s10517-022-05417-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Indexed: 11/28/2022]
Abstract
A comparative study of the effect of a sorbent with nanotubes (Al2O3@ WCNT-PDMS) and a carbon-mineral sorbent (Al2O3@C) on the parameters of human erythrocytes was carried out. Using scanning flow cytometry, the morphological and functional parameters of venous blood erythrocytes as well as drainage blood after its perfusion through columns with sorbents were determined. The compared samples Al2O3@SWCNT-PDMS and Al2O3@C are similar by their effect on the morphological and functional parameters of erythrocytes. The maximum membrane extensibility increased to a greatest extent after contact with Al2O3@C, the amount of hemoglobin in erythrocytes decreased to the greatest extent after perfusion through a column with Al2O3@SWCNT-PDMS sorbent. The scanning flow cytometry is promising for assessing the effect on erythrocytes of new sorption materials intended for blood detoxification. Changes in the parameters of erythrocytes of blood collected in a sterile drainage system for subsequent reinfusion were revealed.
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Affiliation(s)
- V V Nimaev
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
| | - A V Pivkina
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A V Shurlygina
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - L N Rachkovskaya
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A A Smagin
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E S Yastrebova
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E E Rachkovskii
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - M A Korolev
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - V P Mal'tsev
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - A Yu Letyagin
- Research Institute of Clinical and Experimental Lymphology - Affiliated Branch of Federal Research Center Institute of Cytology and Genetics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
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7
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Yastrebova ES, Konokhova AI, Strokotov DI, Karpenko AA, Maltsev VP, Chernyshev AV. Proposed Dynamics of CDB3 Activation in Human Erythrocytes by Nifedipine Studied with Scanning Flow Cytometry. Cytometry A 2019; 95:1275-1284. [PMID: 31750613 DOI: 10.1002/cyto.a.23918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 09/25/2019] [Accepted: 10/01/2019] [Indexed: 12/16/2022]
Abstract
Nifedipine is calcium channels and pumps blocker widely used in medicine. However, mechanisms of nifedipine action in blood are not clear. In particular, the influence of nifedipine on erythrocytes is far from completely understood. In this work, applying scanning flow cytometry, we observed experimentally for the first time the dynamics behind a significant increase of HCO3 - /Cl- transmembrane exchange rate of CDB3 (main anion exchanger, AE1, Band 3, SLC4A1) of human erythrocytes in the presence of nifedipine in blood. It was found that the rate of CDB3 activation is not limited by the rate of nifedipine binding and/or Ca2+ transport. In order to explain the experimental data, we suggested a kinetic model assuming that the rate of CDB3 activation is limited by the dynamics of the balance between two intracellular processes (1) the activation of CDB3 limited by its interaction with intracellular Ca2+ , and (2) the spontaneous deactivation of CDB3. Thus the use of scanning flow cytometry allowed to clarify quantitatively the molecular kinetic mechanism of nifedipine action on human erythrocytes. In particular, the efficiency (~30) and rates of activation (~0.3 min-1 ) and deactivation (~10-3 min-1 ) of CDB3 in human erythrocytes was evaluated for two donors. © 2019 International Society for Advancement of Cytometry.
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Affiliation(s)
- Ekaterina S Yastrebova
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk, 630090, Russia.,Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia.,Meshalkin National Medical Research Center, Ministry of Health of Russian Federation, Rechkunovskaya 15, 630055, Novosibirsk, Russia
| | - Anastasiya I Konokhova
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk, 630090, Russia.,Meshalkin National Medical Research Center, Ministry of Health of Russian Federation, Rechkunovskaya 15, 630055, Novosibirsk, Russia
| | - Dmitry I Strokotov
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk, 630090, Russia.,Novosibirsk State Medical University, Krasny Prospect 52, Novosibirsk, 630091, Russia
| | - Andrei A Karpenko
- Meshalkin National Medical Research Center, Ministry of Health of Russian Federation, Rechkunovskaya 15, 630055, Novosibirsk, Russia
| | - Valeri P Maltsev
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk, 630090, Russia.,Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia.,Novosibirsk State Medical University, Krasny Prospect 52, Novosibirsk, 630091, Russia
| | - Andrei V Chernyshev
- Voevodsky Institute of Chemical Kinetics and Combustion, Institutskaya 3, Novosibirsk, 630090, Russia.,Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
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8
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Gienger J, Gross H, Ost V, Bär M, Neukammer J. Assessment of deformation of human red blood cells in flow cytometry: measurement and simulation of bimodal forward scatter distributions. BIOMEDICAL OPTICS EXPRESS 2019; 10:4531-4550. [PMID: 31565508 PMCID: PMC6757475 DOI: 10.1364/boe.10.004531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/11/2019] [Accepted: 07/18/2019] [Indexed: 06/10/2023]
Abstract
Light scattering by single cells is widely applied for flow cytometric differentiation of cells. However, even for human red blood cells (RBCs), which can be modeled as homogeneous dielectric particles, the potential of light scattering is not yet fully exploited. We developed a dedicated flow cytometer to simultaneously observe the forward scattering cross section (FSC) of RBCs for orthogonal laser beams with incident wave vectorsk → 1 andk → 2 . At a wavelength λ = 632.8 nm , bimodal distributions are observed in two-dimensional dot plots of FSC(k → 1 ) vs. FSC(k → 2 ), which result from the RBCs' random orientation around the direction of flow, as well as from the distributions of their size and their optical properties. Typically, signals of 7.5 × 10 4 RBCs were analyzed. We actively oriented the cells in the cytometer to prove that orientation is the main cause of bimodality. In addition, we studied the wavelength dependence of FSC(k → 1 ) using λ = 413.1 nm , 457.9 nm , 488 nm and 632.8 nm, covering both weak and strong light absorption by the RBCs. Simulations of the light scattering by single RBCs were performed using the discrete dipole approximation (DDA) for a range of sizes, orientations and optical properties to obtain FSC distributions from RBC ensembles. Using the axisymmetric biconcave equilibrium shape of native RBCs, the experimentally observed distributions cannot be reproduced. If, however, an elongated shape model is employed that accounts for the stretching of the cell by hydrodynamic forces in the cytometer, the features of the strongly bimodal measured frequency distributions are reproduced by the simulation. Elongation ratios significantly greater than 1 in the range of 1.5 to 2.5 yield the best agreement between experiments and simulated data.
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Affiliation(s)
- Jonas Gienger
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2–12, 10587 Berlin, Germany
| | - Hermann Gross
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2–12, 10587 Berlin, Germany
| | - Volker Ost
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2–12, 10587 Berlin, Germany
- Currently with Evangelische Zinzendorfschulen, Zittauer Straße 2, 02747 Herrnhut, Germany
| | - Markus Bär
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2–12, 10587 Berlin, Germany
| | - Jörg Neukammer
- Physikalisch-Technische Bundesanstalt (PTB), Abbestraße 2–12, 10587 Berlin, Germany
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9
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Su X, Yuan T, Wang Z, Song K, Li R, Yuan C, Kong B. Two-Dimensional Light Scattering Anisotropy Cytometry for Label-Free Classification of Ovarian Cancer Cells via Machine Learning. Cytometry A 2019; 97:24-30. [PMID: 31313517 DOI: 10.1002/cyto.a.23865] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/14/2019] [Accepted: 07/01/2019] [Indexed: 12/24/2022]
Abstract
We develop a single-mode fiber-based cytometer for the obtaining of two-dimensional (2D) light scattering patterns from static single cells. Anisotropy of the 2D light scattering patterns of single cells from ovarian cancer and normal cell lines is investigated by histograms of oriented gradients (HOG) method. By analyzing the HOG descriptors with support vector machine, an accuracy rate of 92.84% is achieved for the automatic classification of these two kinds of label-free cells. The 2D light scattering anisotropy cytometry combined with machine learning may provide a label-free, automatic method for screening of ovarian cancer cells, and other types of cells. © 2019 International Society for Advancement of Cytometry.
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Affiliation(s)
- Xuantao Su
- Institute of Biomedical Engineering, School of Control Science and Engineering, Shandong University, Jinan, Shandong, 250061, China
| | - Tao Yuan
- Institute of Biomedical Engineering, School of Control Science and Engineering, Shandong University, Jinan, Shandong, 250061, China
| | - Zhiwen Wang
- Institute of Biomedical Engineering, School of Control Science and Engineering, Shandong University, Jinan, Shandong, 250061, China
| | - Kun Song
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, China.,Gynecology Oncology Key Laboratory, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Rongrong Li
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Cunzhong Yuan
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Beihua Kong
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, 250012, China
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10
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Refractive index of human red blood cells between 290 nm and 1100 nm determined by optical extinction measurements. Sci Rep 2019; 9:4623. [PMID: 30874567 PMCID: PMC6420646 DOI: 10.1038/s41598-019-38767-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 01/04/2019] [Indexed: 12/20/2022] Open
Abstract
The knowledge of optical properties of biological cells is essential to interpret their interaction with light and to derive morphological information and parameters associated with cell function like the oxygen transport capacity of human red blood cells (RBCs). We present a method to determine the dependence between the refractive index (RI) of human RBCs and their intracellular hemoglobin (Hb) concentration from spectral extinction measurements of a cell suspension. The procedure is based on the analysis of the corresponding ensemble averaged extinction cross section \documentclass[12pt]{minimal}
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\begin{document}$${\bar{{\boldsymbol{C}}}}_{{\bf{e}}{\bf{x}}{\bf{t}}}(\lambda )$$\end{document}C¯ext(λ). Thus far two complementary approaches have been taken to derive RIs of RBCs. The first one uses homogeneous macroscopic samples prepared by hemolysis for the destruction of the RBCs’ membranes and subsequent centrifugation. A second approach is the determination of RIs of single intact cells by microscopic investigation. These techniques are limited to a few discrete wavelengths or a rather narrow wavelength range. In addition most of these techniques require additional information about the concentration dependence. In contrast, our approach yields the RI increment with Hb concentration of intact, reversibly isovolumetrically sphered, oxygenated RBCs over a wide wavelength range from 290 nm to 1100 nm from macroscopic measurements.
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11
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Acoustophoretic Orientation of Red Blood Cells for Diagnosis of Red Cell Health and Pathology. Sci Rep 2018; 8:15705. [PMID: 30356059 PMCID: PMC6200821 DOI: 10.1038/s41598-018-33411-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 09/28/2018] [Indexed: 11/25/2022] Open
Abstract
Distortions of the normal bi-concave disc shape for red blood cells (RBCs) appear in a number of pathologies resulting from defects in cell membrane skeletal architecture, erythrocyte ageing, and mechanical damage. We present here the potential of acoustic cytometry for developing new approaches to light-scattering based evaluation of red blood cell disorders and of the effects of storage and ageing on changes or damage to RBCs membranes. These approaches could be used to immediately evaluate the quality of erythrocytes prior to blood donation and following transfusion. They could also be applied to studying RBC health in diseases and other pathologies, such as artificial heart valve hemolysis, thermal damage or osmotic fragility. Abnormal distributions of erythrocytes can typically be detected after just 30 to 45 seconds of acquisition time using 1–2 µL starting blood volumes.
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Petriz J, Bradford JA, Ward MD. No lyse no wash flow cytometry for maximizing minimal sample preparation. Methods 2018; 134-135:149-163. [DOI: 10.1016/j.ymeth.2017.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/11/2017] [Accepted: 12/14/2017] [Indexed: 11/17/2022] Open
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Lin YH, Huang SS, Wu SJ, Sung KB. Morphometric analysis of erythrocytes from patients with thalassemia using tomographic diffractive microscopy. JOURNAL OF BIOMEDICAL OPTICS 2017; 22:1-11. [PMID: 29188659 DOI: 10.1117/1.jbo.22.11.116009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 11/13/2017] [Indexed: 05/23/2023]
Abstract
Complete blood count is the most common test to detect anemia, but it is unable to obtain the abnormal shape of erythrocytes, which highly correlates with the hematologic function. Tomographic diffractive microscopy (TDM) is an emerging technique capable of quantifying three-dimensional (3-D) refractive index (RI) distributions of erythrocytes without labeling. TDM was used to characterize optical and morphological properties of 172 erythrocytes from healthy volunteers and 419 erythrocytes from thalassemic patients. To efficiently extract and analyze the properties of erythrocytes, we developed an adaptive region-growing method for automatically delineating erythrocytes from 3-D RI maps. The thalassemic erythrocytes not only contained lower hemoglobin content but also showed doughnut shape and significantly lower volume, surface area, effective radius, and average thickness. A multi-indices prediction model achieved perfect accuracy of diagnosing thalassemia using four features, including the optical volume, surface-area-to-volume ratio, sphericity index, and surface area. The results demonstrate the ability of TDM to provide quantitative, hematologic measurements and to assess morphological features of erythrocytes to distinguish healthy and thalassemic erythrocytes.
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Affiliation(s)
- Yang-Hsien Lin
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
| | - Shin-Shyang Huang
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
| | - Shang-Ju Wu
- National Taiwan University Hospital, Department of Internal Medicines, Taiwan
| | - Kung-Bin Sung
- National Taiwan University, Graduate Institute of Biomedical Electronics and Bioinformatics, Taiwan
- National Taiwan University, Department of Electrical Engineering, Taiwan
- National Taiwan University, Molecular Imaging Center, Taiwan
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