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Bourguignon C, Ansel C, Gineys JP, Schuldiner S, Isèbe D, Geitner M, Taraconat P, Gris JC. New erythrocyte parameters derived from the Coulter principle relate with red blood cell properties-A pilot study in diabetes mellitus. PLoS One 2023; 18:e0293356. [PMID: 37883361 PMCID: PMC10602249 DOI: 10.1371/journal.pone.0293356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023] Open
Abstract
In routine hematological instruments, blood cells are counted and sized by monitoring the impedance signals induced during their passage through a Coulter orifice. However, only signals associated with centered paths in the aperture are considered for analysis, while the rejected measurements, caused by near-wall trajectories, can provide additional information on red blood cells (RBC), as recent publications suggest. To assess usefulness of two new parameters in describing alterations in RBC properties, we performed a pilot study to compare blood samples from patients with diabetes mellitus (DM), frequent pathological condition associated with impairment in RBC deformability, versus controls. A total of 345 blood samples were analyzed: 225 in the DM group and 120 in the control group. A diagram of [Formula: see text] and [Formula: see text], the two new parameters derived from the analysis of impedancemetry pulses, was used to compare distribution of RBC subpopulations between groups. To discriminate RBC from DM and control individuals, based on our multiparametric analysis, we built a score from variables derived from [Formula: see text] matrix which showed good performances: area under the receiving operating characteristic curve 0.948 (0.920-0.970), p<0.0001; best discriminating value: negative predictive value 94.7%, positive predictive value was 78.4%. These results seem promising to approach RBC alterations in routine laboratory practice. The related potential clinically relevant outcomes remain to be investigated.
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Affiliation(s)
- Chloé Bourguignon
- Department of Haematology, Nîmes University Hospital and University of Montpellier, Nîmes, France
- UMR UA11 INSERM - Montpellier University IDESP, Montpellier, France
| | - Clémentine Ansel
- Department of Haematology, Nîmes University Hospital and University of Montpellier, Nîmes, France
- HORIBA Medical, Parc Euromédecine, Rue du Caducée, Montpellier, France
| | | | - Sophie Schuldiner
- Department of Metabolic Diseases and Endocrinology, Nîmes University Hospital, Nîmes, France
| | - Damien Isèbe
- HORIBA Medical, Parc Euromédecine, Rue du Caducée, Montpellier, France
| | - Michael Geitner
- HORIBA Medical, Parc Euromédecine, Rue du Caducée, Montpellier, France
| | - Pierre Taraconat
- HORIBA Medical, Parc Euromédecine, Rue du Caducée, Montpellier, France
| | - Jean-Christophe Gris
- Department of Haematology, Nîmes University Hospital and University of Montpellier, Nîmes, France
- UMR UA11 INSERM - Montpellier University IDESP, Montpellier, France
- Department of Gynaecology and Obstetrics, First Moscow State Medical University (Sechenov University), Moscow, Russian Federation
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Taraconat P, Gineys JP, Isèbe D, Nicoud F, Mendez S. Detecting cells rotations for increasing the robustness of cell sizing by impedance measurements, with or without machine learning. Cytometry A 2021; 99:977-986. [PMID: 33891370 DOI: 10.1002/cyto.a.24356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 04/02/2021] [Accepted: 04/14/2021] [Indexed: 11/07/2022]
Abstract
The Coulter principle is a widespread technique for sizing red blood cells (RBCs) in hematological analyzers. It is based on the monitoring of the electrical perturbations generated by cells passing through a micro-orifice, in which a concentrated electrical field is imposed by two electrodes. However, artifacts associated with near-wall passages in the sensing region are known to skew the statistics for RBCs sizing. This study presents numerical results that emphasize the link between the cell flow-induced rotation in the detection area and the error in its measured volume. Based on these observations, two methods are developed to identify and reject pulses impaired by cell rotation. In the first strategy, the filtering is allowed by a metric computed directly from the waveform. In the second, a numerical database is employed to train a neural network capable of detecting if the cell has experienced a rotation, given its electrical pulse. Detecting and rejecting rotation-associated pulses are shown to provide results comparable to hydrodynamical focusing, which enforces cells to flow in the center of the orifice, the gold standard implementation of the Coulter principle.
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Affiliation(s)
- Pierre Taraconat
- Horiba Medical, Parc Euromédecine, Montpellier, France.,Institut Montpelliérain Alexander, Grothendieck, CNRS, Univ. Montpellier, Montpellier, France
| | | | - Damien Isèbe
- Horiba Medical, Parc Euromédecine, Montpellier, France
| | - Franck Nicoud
- Institut Montpelliérain Alexander, Grothendieck, CNRS, Univ. Montpellier, Montpellier, France
| | - Simon Mendez
- Institut Montpelliérain Alexander, Grothendieck, CNRS, Univ. Montpellier, Montpellier, France
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Lavabre T, Polizopoulou ZS, Isèbe D, Cioni O, Rebuffel V, Blandin P, Bourgès-Abella N, Trumel C. Detection of circulating microfilariae in canine EDTA blood using lens-free technology: preliminary results. J Vet Diagn Invest 2021; 33:572-576. [PMID: 33733938 DOI: 10.1177/10406387211001092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dirofilaria immitis causes life-threatening heart disease in dogs, thus screening of dog populations is important. Lens-free technology (LFT) is a low-cost imaging technique based on light diffraction that allows computerized recognition of small objects in holographic images. We evaluated an algorithm capable of recognizing microfilariae in canine whole blood using the LFT. We examined 3 groups of 10 EDTA blood specimens, from dogs with microfilaremia (group A), healthy dogs (B), and dogs with hematologic modifications other than microfilaremia (C). The LFT analyzer photographed repeated series of 5 images of all samples. The algorithm declared a sample positive if a microfilaria was detected on ≥1, ≥2, or ≥3 of the 5 images of a series. Microfilariae were detected visually in the images in 9 of 10 cases in group A; no microfilariae were seen in the images from groups B and C. Of the 30 cases, there were 14, 4, and only 3 false-positives with the 1 of 5, 2 of 5, and 3 of 5 image cutoffs, respectively. There were no false-negatives, regardless of cutoff. LFT seems useful for detecting microfilaria and could have application in clinical pathology.
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Affiliation(s)
- Typhaine Lavabre
- Département des Sciences Cliniques des animaux de compagnie et de sport, École nationale vétérinaire de Toulouse, Université de Toulouse, INSERM, ENVT, UPS, Toulouse, France.,CREFRE, École nationale vétérinaire de Toulouse, Université de Toulouse, INSERM, ENVT, UPS, Toulouse, France
| | - Zoe S Polizopoulou
- Diagnostic Laboratory, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Olivier Cioni
- Université de Grenoble Alpes, CEA, LETI, Grenoble, France
| | | | - Pierre Blandin
- Université de Grenoble Alpes, CEA, LETI, Grenoble, France
| | - Nathalie Bourgès-Abella
- CREFRE, École nationale vétérinaire de Toulouse, Université de Toulouse, INSERM, ENVT, UPS, Toulouse, France
| | - Catherine Trumel
- Département des Sciences Cliniques des animaux de compagnie et de sport, École nationale vétérinaire de Toulouse, Université de Toulouse, INSERM, ENVT, UPS, Toulouse, France.,CREFRE, École nationale vétérinaire de Toulouse, Université de Toulouse, INSERM, ENVT, UPS, Toulouse, France
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Isèbe D, Nérin P. Numerical simulation of particle dynamics in an orifice-electrode system. Application to counting and sizing by impedance measurement. Int J Numer Method Biomed Eng 2013; 29:462-475. [PMID: 23349148 DOI: 10.1002/cnm.2528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 10/09/2012] [Accepted: 10/15/2012] [Indexed: 06/01/2023]
Abstract
This paper describes how to numerically tackle the problem of counting and sizing particles by impedance measurement in an orifice-electrode system. The model allows to simulate the particle dynamics submitted to strong hydrodynamic stresses through a microorifice and to compute the voltage pulses generated by the modification of the inner dielectric medium. This approach gives important information about particles size distribution and allows to quantify the role of trajectory and orientation of particles on the size measurement.
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Affiliation(s)
- Damien Isèbe
- Research Department, HORIBA Medical, Parc Euromedecine, Rue du Caducée, BP 7290, 34184, Montpellier, France.
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