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Stauffer E, Pichon AP, Champigneulle B, Furian M, Hancco I, Darras A, Robach P, Brugniaux JV, Nader E, Connes P, Verges S, Kaestner L. Making a virtue out of an evil: Are red blood cells from chronic mountain sickness patients eligible for transfusions? Am J Hematol 2024. [PMID: 38622808 DOI: 10.1002/ajh.27317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/18/2024] [Accepted: 03/22/2024] [Indexed: 04/17/2024]
Abstract
We investigated highlanders, permanently living at an altitude of 5100 m and compared Chronic Mountain Sickness (CMS) patients with control volunteers. While we found differences in systemic parameters such as blood oxygen content, hematocrit, hemoglobin concentration, and blood viscosity, the mechanical and rheological properties of single red blood cells did not differ between the two investigated groups.
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Affiliation(s)
- Emeric Stauffer
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Explorations Fonctionnelles Respiratoires, Médecine du sport et de l'Activité Physique, Hospices Civils de Lyon, Hôpital Croix Rousse, Lyon, France
| | | | | | - Michaël Furian
- Pulmonary Division, University Hospital Zurich, Zurich, Switzerland
| | - Ivan Hancco
- Instituto de Investigation de la Universidad San Martín de Porres, Centro de Investigation en Medicina de Altura (CIMA), Facultad de Medicina Human, Universidad de San Martin de Porres, Lima, Peru
| | - Alexis Darras
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Paul Robach
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes HP2, Grenoble, France
- National School for Mountain Sports, Site of the National School for Skiing and Mountaineering (ENSA), Chamonix, France
| | - Julien V Brugniaux
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes HP2, Grenoble, France
| | - Elie Nader
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Philippe Connes
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
| | - Samuel Verges
- Université Grenoble Alpes, Inserm, CHU Grenoble Alpes HP2, Grenoble, France
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
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2
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Champigneulle B, Caton F, Seyve L, Stauffer É, Pichon A, Brugniaux JV, Furian M, Hancco I, Deschamps B, Kaestner L, Robach P, Connes P, Bouzat P, Polack B, Marlu R, Verges S. Are coagulation profiles in Andean highlanders with excessive erythrocytosis favouring hypercoagulability? Exp Physiol 2024. [PMID: 38554124 DOI: 10.1113/ep091670] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 03/18/2024] [Indexed: 04/01/2024]
Abstract
Chronic mountain sickness is a maladaptive syndrome that affects individuals living permanently at high altitude and is characterized primarily by excessive erythrocytosis (EE). Recent results concerning the impact of EE in Andean highlanders on clotting and the possible promotion of hypercoagulability, which can lead to thrombosis, were contradictory. We assessed the coagulation profiles of Andeans highlanders with and without excessive erythrocytosis (EE+ and EE-). Blood samples were collected from 30 EE+ and 15 EE- in La Rinconada (Peru, 5100-5300 m a.s.l.), with special attention given to the sampling pre-analytical variables. Rotational thromboelastometry tests were performed at both native and normalized (40%) haematocrit using autologous platelet-poor plasma. Thrombin generation, dosages of clotting factors and inhibitors were measured in plasma samples. Data were compared between groups and with measurements performed at native haematocrit in 10 lowlanders (LL) at sea level. At native haematocrit, in all rotational thromboelastometry assays, EE+ exhibited hypocoagulable profiles (prolonged clotting time and weaker clot strength) compared with EE- and LL (all P < 0.01). At normalized haematocrit, clotting times were normalized in most individuals. Conversely, maximal clot firmness was normalized only in FIBTEM and not in EXTEM/INTEM assays, suggesting abnormal platelet activity. Thrombin generation, levels of plasma clotting factors and inhibitors, and standard coagulation assays were mostly normal in all groups. No highlanders reported a history of venous thromboembolism based on the dedicated survey. Collectively, these results indicate that EE+ do not present a hypercoagulable profile potentially favouring thrombosis.
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Affiliation(s)
- Benoit Champigneulle
- Univ. Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
- Department of Anaesthesia and Critical Care, CHU Grenoble Alpes, Grenoble, France
| | | | - Landry Seyve
- Hemostasis Laboratory, Grenoble University Hospital, Grenoble, France
| | - Émeric Stauffer
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team 'Vascular Biology and Red Blood Cell', Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
- Exploration Fonctionnelle Respiratoire, Médecine du Sport et de l'Activité Physique, Hospices Civils de Lyon, Hôpital Croix Rousse, Lyon, France
| | - Aurélien Pichon
- Université de Poitiers, Laboratoire Move UR 20296, STAPS, Poitiers, France
| | | | - Michael Furian
- Univ. Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Ivan Hancco
- Univ. Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
| | | | - Lars Kaestner
- Dynamics of Fluids, Experimental Physics, Saarland University, Homburg, Germany
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
| | - Paul Robach
- National School for Mountain Sports, Site of the National School for Skiing and Mountaineering (ENSA), Chamonix, France
| | - Philippe Connes
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team 'Vascular Biology and Red Blood Cell', Université Claude Bernard Lyon 1, Université de Lyon, Lyon, France
- Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
| | - Pierre Bouzat
- Department of Anaesthesia and Critical Care, CHU Grenoble Alpes, Grenoble, France
- Univ. Grenoble Alpes, Inserm, CHU Grenoble Alpes, GIN, Grenoble, France
| | - Benoit Polack
- Univ. Grenoble Alpes, CNRS, CHU Grenoble Alpes, TIMC-IMAG, Grenoble, France
| | - Raphael Marlu
- Hemostasis Laboratory, Grenoble University Hospital, Grenoble, France
- Univ. Grenoble Alpes, CNRS, CHU Grenoble Alpes, TIMC-IMAG, Grenoble, France
| | - Samuel Verges
- Univ. Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
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3
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Kaestner L, Schlenke P, von Lindern M, El Nemer W. Translatable tool to quantitatively assess the quality of red blood cell units and tailored cultured red blood cells for transfusion. Proc Natl Acad Sci U S A 2024; 121:e2318762121. [PMID: 38437568 PMCID: PMC10945767 DOI: 10.1073/pnas.2318762121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024] Open
Affiliation(s)
- Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Campus Saarland University Hospital, Homburg/Saar66424, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken66123, Germany
| | - Peter Schlenke
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz8036, Austria
| | - Marieke von Lindern
- Landsteiner Laboratory, Amsterdam University Medical Center, University of Amsterdam, Amsterdam1105AZ, The Netherlands
- Department Hematopoiesis, Sanquin Blood Supply Foundation, Amsterdam1066CX, The Netherlands
| | - Wassim El Nemer
- Etablissement Français du Sang Prevence Alpes Côte d’Azur-Corse, Aix Marseille University, Centre national de la recherche scientifique (CNRS), Anthropologie bio-culturelle, Droit, Ethique et Santé (UMR 7268), Globule Rouge laboratory of excellence (GR-Ex), Marseille13005, France
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4
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Bogdanova A, Kaestner L. Advances in Red Blood Cells Research. Cells 2024; 13:359. [PMID: 38391972 PMCID: PMC10887574 DOI: 10.3390/cells13040359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 02/11/2024] [Indexed: 02/24/2024] Open
Abstract
This Editorial 'Advances in Red Blood Cell Research' is the preface for the special issue with the same title which files 14 contributions listed in Table 1 [...].
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Affiliation(s)
- Anna Bogdanova
- Red Blood Cell Group, Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Campus of Saarland University Hospital, Saarland University, 66424 Homburg, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
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5
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Murciano N, Kaestner L. The Putative Role of the Transient Receptor Potential Ion Channel of Vanilloid Type 2 in Red Blood Cell Storage Lesions. Transfus Med Hemother 2024; 51:52-54. [PMID: 38314245 PMCID: PMC10836854 DOI: 10.1159/000531282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 05/18/2023] [Indexed: 02/06/2024] Open
Affiliation(s)
- Nicoletta Murciano
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Nanion Technologies GmbH, Munich, Germany
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
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6
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Petkova-Kirova P, Murciano N, Iacono G, Jansen J, Simionato G, Qiao M, Van der Zwaan C, Rotordam MG, John T, Hertz L, Hoogendijk AJ, Becker N, Wagner C, Von Lindern M, Egee S, Van den Akker E, Kaestner L. The Gárdos Channel and Piezo1 Revisited: Comparison between Reticulocytes and Mature Red Blood Cells. Int J Mol Sci 2024; 25:1416. [PMID: 38338693 PMCID: PMC10855361 DOI: 10.3390/ijms25031416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 02/12/2024] Open
Abstract
The Gárdos channel (KCNN4) and Piezo1 are the best-known ion channels in the red blood cell (RBC) membrane. Nevertheless, the quantitative electrophysiological behavior of RBCs and its heterogeneity are still not completely understood. Here, we use state-of-the-art biochemical methods to probe for the abundance of the channels in RBCs. Furthermore, we utilize automated patch clamp, based on planar chips, to compare the activity of the two channels in reticulocytes and mature RBCs. In addition to this characterization, we performed membrane potential measurements to demonstrate the effect of channel activity and interplay on the RBC properties. Both the Gárdos channel and Piezo1, albeit their average copy number of activatable channels per cell is in the single-digit range, can be detected through transcriptome analysis of reticulocytes. Proteomics analysis of reticulocytes and mature RBCs could only detect Piezo1 but not the Gárdos channel. Furthermore, they can be reliably measured in the whole-cell configuration of the patch clamp method. While for the Gárdos channel, the activity in terms of ion currents is higher in reticulocytes compared to mature RBCs, for Piezo1, the tendency is the opposite. While the interplay between Piezo1 and Gárdos channel cannot be followed using the patch clamp measurements, it could be proved based on membrane potential measurements in populations of intact RBCs. We discuss the Gárdos channel and Piezo1 abundance, interdependencies and interactions in the context of their proposed physiological and pathophysiological functions, which are the passing of small constrictions, e.g., in the spleen, and their active participation in blood clot formation and thrombosis.
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Affiliation(s)
- Polina Petkova-Kirova
- Institute of Neurobiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
- Department of Biochemistry, Saarland University, 66123 Saarbrücken, Germany
| | - Nicoletta Murciano
- Nanion Technologies, 80339 Munich, Germany; (N.M.); (M.G.R.); (N.B.)
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, 66421 Homburg, Germany; (J.J.); (M.Q.); (L.H.)
| | - Giulia Iacono
- Department of Hematopoiesis, Sanquin Research, 1066 CX Amsterdam, The Netherlands; (G.I.); (C.V.d.Z.); (A.J.H.); (M.V.L.); (E.V.d.A.)
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1007 MB Amsterdam, The Netherlands
| | - Julia Jansen
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, 66421 Homburg, Germany; (J.J.); (M.Q.); (L.H.)
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
| | - Greta Simionato
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
- Department of Experimental Surgery, Campus University Hospital, Saarland University, 66421 Homburg, Germany
| | - Min Qiao
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, 66421 Homburg, Germany; (J.J.); (M.Q.); (L.H.)
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
| | - Carmen Van der Zwaan
- Department of Hematopoiesis, Sanquin Research, 1066 CX Amsterdam, The Netherlands; (G.I.); (C.V.d.Z.); (A.J.H.); (M.V.L.); (E.V.d.A.)
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1007 MB Amsterdam, The Netherlands
| | | | - Thomas John
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
| | - Laura Hertz
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, 66421 Homburg, Germany; (J.J.); (M.Q.); (L.H.)
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
| | - Arjan J. Hoogendijk
- Department of Hematopoiesis, Sanquin Research, 1066 CX Amsterdam, The Netherlands; (G.I.); (C.V.d.Z.); (A.J.H.); (M.V.L.); (E.V.d.A.)
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1007 MB Amsterdam, The Netherlands
| | - Nadine Becker
- Nanion Technologies, 80339 Munich, Germany; (N.M.); (M.G.R.); (N.B.)
| | - Christian Wagner
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg
| | - Marieke Von Lindern
- Department of Hematopoiesis, Sanquin Research, 1066 CX Amsterdam, The Netherlands; (G.I.); (C.V.d.Z.); (A.J.H.); (M.V.L.); (E.V.d.A.)
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1007 MB Amsterdam, The Netherlands
| | - Stephane Egee
- Biological Station Roscoff, Sorbonne University, CNRS, UMR8227 LBI2M, F-29680 Roscoff, France;
- Laboratory of Excellence GR-Ex, F-75015 Paris, France
| | - Emile Van den Akker
- Department of Hematopoiesis, Sanquin Research, 1066 CX Amsterdam, The Netherlands; (G.I.); (C.V.d.Z.); (A.J.H.); (M.V.L.); (E.V.d.A.)
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1007 MB Amsterdam, The Netherlands
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, 66421 Homburg, Germany; (J.J.); (M.Q.); (L.H.)
- Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany (T.J.); (C.W.)
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7
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D’Alessandro A, Earley EJ, Nemkov T, Stephenson D, Dzieciatkowska M, Hansen KC, Minetti G, Champigneulle B, Stauffer E, Pichon A, Furian M, Verges S, Kleinman S, Norris PJ, Busch MP, Page GP, Kaestner L. Genetic polymorphisms and expression of Rhesus blood group RHCE are associated with 2,3-bisphosphoglycerate in humans at high altitude. Proc Natl Acad Sci U S A 2024; 121:e2315930120. [PMID: 38147558 PMCID: PMC10769835 DOI: 10.1073/pnas.2315930120] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 10/24/2023] [Indexed: 12/28/2023] Open
Abstract
Red blood cell (RBC) metabolic reprogramming upon exposure to high altitude contributes to physiological human adaptations to hypoxia, a multifaceted process critical to health and disease. To delve into the molecular underpinnings of this phenomenon, first, we performed a multi-omics analysis of RBCs from six lowlanders after exposure to high-altitude hypoxia, with longitudinal sampling at baseline, upon ascent to 5,100 m and descent to sea level. Results highlighted an association between erythrocyte levels of 2,3-bisphosphoglycerate (BPG), an allosteric regulator of hemoglobin that favors oxygen off-loading in the face of hypoxia, and expression levels of the Rhesus blood group RHCE protein. We then expanded on these findings by measuring BPG in RBCs from 13,091 blood donors from the Recipient Epidemiology and Donor Evaluation Study. These data informed a genome-wide association study using BPG levels as a quantitative trait, which identified genetic polymorphisms in the region coding for the Rhesus blood group RHCE as critical determinants of BPG levels in erythrocytes from healthy human volunteers. Mechanistically, we suggest that the Rh group complex, which participates in the exchange of ammonium with the extracellular compartment, may contribute to intracellular alkalinization, thus favoring BPG mutase activity.
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Affiliation(s)
- Angelo D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus,Aurora, CO80045
| | - Eric J. Earley
- Research Triangle Institute International, Atlanta, GA30329-4434
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus,Aurora, CO80045
| | - Daniel Stephenson
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus,Aurora, CO80045
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus,Aurora, CO80045
| | - Kirk C. Hansen
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus,Aurora, CO80045
| | - Giampaolo Minetti
- Department of Biology and Biotechnology, University of Pavia, Pavia27100, Italy
| | - Benoit Champigneulle
- Hypoxia Physiopathology laboratory (HP2), INSERM U1042, Grenoble Alpes University, Grenoble38400, France
| | - Emeric Stauffer
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Université Claude Bernard Lyon 1, Lyon69100, France
| | - Aurélien Pichon
- Université de Poitiers, Laboratoire MOVE,Poitiers20296, France
| | - Michael Furian
- Pulmonology Department, University of Zurich, Zürich 1008091, Switzerland
| | - Samuel Verges
- Hypoxia Physiopathology laboratory (HP2), INSERM U1042, Grenoble Alpes University, Grenoble38400, France
| | - Steven Kleinman
- Department of Pathology and Laborarory Medicine, University of British Columbia, Victoria, BC V6T 1Z4, Canada
| | | | | | - Grier P. Page
- Research Triangle Institute International, Atlanta, GA30329-4434
| | - Lars Kaestner
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbrücken66123, Germany
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8
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John T, Kaestner L, Wagner C, Darras A. Early stage of erythrocyte sedimentation rate test: Fracture of a high-volume-fraction gel. PNAS Nexus 2024; 3:pgad416. [PMID: 38145245 PMCID: PMC10735292 DOI: 10.1093/pnasnexus/pgad416] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023]
Abstract
Erythrocyte sedimentation rate (ESR) is a clinical parameter used as a nonspecific marker for inflammation, and recent studies have shown that it is linked to the collapse of the gel formed by red blood cells (RBCs) at physiological hematocrits (i.e. RBC volume fraction). Previous research has suggested that the observation of a slower initial dynamics is related to the formation of fractures in the gel. Moreover, RBC gels present specific properties due to the anisotropic shape and flexibility of the RBCs. Namely, the onset of the collapse is reached earlier and the settling velocity of the gel increases with increasing attraction between the RBCs, while the gel of spherical particles shows the opposite trend. Here, we report experimental observations of the gel structure during the onset of the collapse. We suggest an equation modeling this initial process as fracturing of the gel. We demonstrate that this equation provides a model for the motion of the interface between blood plasma and the RBC gel, along the whole time span. We also observe that the increase in the attraction between the RBCs modifies the density of fractures in the gel, which explains why the gel displays an earlier onset when the aggregation energy between the RBCs increases. Our work uncovers the detailed physical mechanism underlying the ESR and provides insights into the fracture dynamics of an RBC gel. These results can improve the accuracy of clinical measurements.
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Affiliation(s)
- Thomas John
- Experimental Physics, Saarland University, Saarbruecken 66123, Germany
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbruecken 66123, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg 66421, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, Saarbruecken 66123, Germany
- Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg L-1511, Luxembourg
| | - Alexis Darras
- Experimental Physics, Saarland University, Saarbruecken 66123, Germany
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9
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Murciano N, Rotordam MG, Becker N, Ludlow MJ, Parsonage G, Darras A, Kaestner L, Beech DJ, George M, Fertig N, Rapedius M, Brüggemann A. A high-throughput electrophysiology assay to study the response of PIEZO1 to mechanical stimulation. J Gen Physiol 2023; 155:e202213132. [PMID: 37801066 PMCID: PMC10558326 DOI: 10.1085/jgp.202213132] [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: 02/15/2022] [Revised: 07/17/2023] [Accepted: 09/17/2023] [Indexed: 10/07/2023] Open
Abstract
PIEZO1 channels are mechanically activated cation channels that play a pivotal role in sensing mechanical forces in various cell types. Their dysfunction has been associated with numerous pathophysiological states, including generalized lymphatic dysplasia, varicose vein disease, and hereditary xerocytosis. Given their physiological relevance, investigating PIEZO1 is crucial for the pharmaceutical industry, which requires scalable techniques to allow for drug discovery. In this regard, several studies have used high-throughput automated patch clamp (APC) combined with Yoda1, a specific gating modifier of PIEZO1 channels, to explore the function and properties of PIEZO1 in heterologous expression systems, as well as in primary cells. However, a combination of solely mechanical stimulation (M-Stim) and high-throughput APC has not yet been available for the study of PIEZO1 channels. Here, we show that optimization of pipetting parameters of the SyncroPatch 384 coupled with multihole NPC-384 chips enables M-Stim of PIEZO1 channels in high-throughput electrophysiology. We used this approach to explore differences between the response of mouse and human PIEZO1 channels to mechanical and/or chemical stimuli. Our results suggest that applying solutions on top of the cells at elevated pipetting flows is crucial for activating PIEZO1 channels by M-Stim on the SyncroPatch 384. The possibility of comparing and combining mechanical and chemical stimulation in a high-throughput patch clamp assay facilitates investigations on PIEZO1 channels and thereby provides an important experimental tool for drug development.
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Affiliation(s)
- Nicoletta Murciano
- Nanion Technologies GmbH, München, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | | | | | - Melanie J. Ludlow
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - Gregory Parsonage
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
| | - Alexis Darras
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - David J. Beech
- Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, UK
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10
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Hatem A, Esperti S, Murciano N, Qiao M, Giustina Rotordam M, Becker N, Nader E, Maurer F, Pérès L, Bouyer G, Kaestner L, Connes P, Egée S. Adverse effects of delta-9-tetrahydrocannabinol on sickle red blood cells. Am J Hematol 2023; 98:E383-E386. [PMID: 37800361 DOI: 10.1002/ajh.27109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/31/2023] [Accepted: 09/09/2023] [Indexed: 10/07/2023]
Abstract
THC triggers a pronounced entry of Ca2+ , which may be deleterious, into sickle cell red blood cells via activation of the TRPV2 channel.
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Affiliation(s)
- Aline Hatem
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Sofia Esperti
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
| | - Nicoletta Murciano
- Research and Development, Nanion Technologies, Munich, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Min Qiao
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | | | - Nadine Becker
- Research and Development, Nanion Technologies, Munich, Germany
| | - Elie Nader
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
| | - Felix Maurer
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Laurent Pérès
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Guillaume Bouyer
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Philippe Connes
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
| | - Stéphane Egée
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
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11
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van Dijk MJ, van Oirschot BA, Harrison AN, Recktenwald SM, Qiao M, Stommen A, Cloos AS, Vanderroost J, Terrasi R, Dey K, Bos J, Rab MAE, Bogdanova A, Minetti G, Muccioli GG, Tyteca D, Egée S, Kaestner L, Molday RS, van Beers EJ, van Wijk R. A novel missense variant in ATP11C is associated with reduced red blood cell phosphatidylserine flippase activity and mild hereditary hemolytic anemia. Am J Hematol 2023; 98:1877-1887. [PMID: 37671681 DOI: 10.1002/ajh.27088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/07/2023]
Abstract
Adenosine Triphosphatase (ATPase) Phospholipid Transporting 11C gene (ATP11C) encodes the major phosphatidylserine (PS) flippase in human red blood cells (RBCs). Flippases actively transport phospholipids (e.g., PS) from the outer to the inner leaflet to establish and maintain phospholipid asymmetry of the lipid bilayer of cell membranes. This asymmetry is crucial for survival since externalized PS triggers phagocytosis by splenic macrophages. Here we report on pathophysiological consequences of decreased flippase activity, prompted by a patient with hemolytic anemia and hemizygosity for a novel c.2365C > T p.(Leu789Phe) missense variant in ATP11C. ATP11C protein expression was strongly reduced by 58% in patient-derived RBC ghosts. Furthermore, functional characterization showed only 26% PS flippase activity. These results were confirmed by recombinant mutant ATP11C protein expression in HEK293T cells, which was decreased to 27% compared to wild type, whereas PS-stimulated ATPase activity was decreased by 57%. Patient RBCs showed a mild increase in PS surface exposure when compared to control RBCs, which further increased in the most dense RBCs after RBC storage stress. The increase in PS was not due to higher global membrane content of PS or other phospholipids. In contrast, membrane lipid lateral distribution showed increased abundance of cholesterol-enriched domains in RBC low curvature areas. Finally, more dense RBCs and subtle changes in RBC morphology under flow hint toward alterations in flow behavior of ATP11C-deficient RBCs. Altogether, ATP11C deficiency is the likely cause of hemolytic anemia in our patient, thereby underlining the physiological role and relevance of this flippase in human RBCs.
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Affiliation(s)
- Myrthe J van Dijk
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Center for Benign Hematology, Thrombosis and Hemostasis-Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Brigitte A van Oirschot
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Alexander N Harrison
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada
| | | | - Min Qiao
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Amaury Stommen
- CELL Unit and PICT Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | - Anne-Sophie Cloos
- CELL Unit and PICT Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | | | - Romano Terrasi
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Brussels, Belgium
| | - Kuntal Dey
- Red Blood Cell Group, Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland
| | - Jennifer Bos
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Minke A E Rab
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
- Department of Hematology, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Anna Bogdanova
- Red Blood Cell Group, Institute of Veterinary Physiology, University of Zurich, Zurich, Switzerland
| | - Giampaolo Minetti
- Department of Biology and Biotechnology "L. Spallanzani", Laboratories of Biochemistry, University of Pavia, Pavia, Italy
| | - Giulio G Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Brussels, Belgium
| | - Donatienne Tyteca
- CELL Unit and PICT Platform, de Duve Institute, UCLouvain, Brussels, Belgium
| | - Stéphane Egée
- UMR 8227 CNRS-Sorbonne Université, Station Biologique de Roscoff, Roscoff, France
| | - Lars Kaestner
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Robert S Molday
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada
| | - Eduard J van Beers
- Center for Benign Hematology, Thrombosis and Hemostasis-Van Creveldkliniek, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Richard van Wijk
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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12
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Kaestner L. Proceedings of the Eleventh International Meeting on Neuroacanthocytosis Syndromes. Tremor Other Hyperkinet Mov (N Y) 2023; 13:41. [PMID: 37928888 PMCID: PMC10624129 DOI: 10.5334/tohm.826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 10/19/2023] [Indexed: 11/07/2023] Open
Abstract
The 11th International Meeting on Neuroacanthocytosis Syndromes was held on September 15th-17th, 2023 at the University Hospital Campus in Homburg/Saar, Germany. The meeting followed the previous ten international symposia, the last of which was held online due to restrictions due to COVID19, in March 2021. The setting of the meeting encouraged interactions, exchange of ideas, and networking opportunities among the participants from around the globe, including basic and clinical scientists, clinicians, and especially patients, their relatives and caregivers. A total of about 20 oral communications were presented in five scientific sessions accompanied by a keynote lecture, a "Poster-Blitz" session, the "Glenn Irvine Prize" lecture and a panel discussion about "Patient registries, international cooperation & future perspectives". In summary, attendees discussed recent advances and set the basis for the next steps, action points, and future studies in close collaboration with the patient associations, which were actively involved in the whole process.
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Affiliation(s)
- Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Campus University Hospital, 66421 Homburg/Saar, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
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13
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Minetti G, Bianchi P, Bogdanova A, Kaestner L. Editorial: Images from red cells, Volume II. Front Physiol 2023; 14:1252273. [PMID: 37565144 PMCID: PMC10411185 DOI: 10.3389/fphys.2023.1252273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 07/17/2023] [Indexed: 08/12/2023] Open
Affiliation(s)
- Giampaolo Minetti
- Department of Biology and Biotechnology “L. Spallanzani”, Laboratories of Biochemistry, University of Pavia, Pavia, Italy
| | - Paola Bianchi
- Hematology Unit, Physiopathology of Anemias Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milano, Milan, Italy
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, and Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Zurich Center for Integrative Human Physiology (ZIHP), Zurich, Switzerland
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbrücken, Germany
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14
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Lopes MG, Recktenwald SM, Simionato G, Eichler H, Wagner C, Quint S, Kaestner L. Big Data in Transfusion Medicine and Artificial Intelligence Analysis for Red Blood Cell Quality Control. Transfus Med Hemother 2023; 50:163-173. [PMID: 37408647 PMCID: PMC10319094 DOI: 10.1159/000530458] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/27/2023] [Indexed: 07/07/2023] Open
Abstract
Background "Artificial intelligence" and "big data" increasingly take the step from just being interesting concepts to being relevant or even part of our lives. This general statement holds also true for transfusion medicine. Besides all advancements in transfusion medicine, there is not yet an established red blood cell quality measure, which is generally applied. Summary We highlight the usefulness of big data in transfusion medicine. Furthermore, we emphasize in the example of quality control of red blood cell units the application of artificial intelligence. Key Messages A variety of concepts making use of big data and artificial intelligence are readily available but still await to be implemented into any clinical routine. For the quality control of red blood cell units, clinical validation is still required.
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Affiliation(s)
- Marcelle G.M. Lopes
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Cysmic GmbH, Saarbrücken, Germany
| | | | - Greta Simionato
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, Saarbrücken, Germany
| | - Hermann Eichler
- Institute of Clinical Hemostaseology and Transfusion Medicine, Saarland University, Saarbrücken, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg City, Luxembourg
| | | | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Saarbrücken, Germany
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15
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Nouaman M, Darras A, John T, Simionato G, Rab MAE, van Wijk R, Laschke MW, Kaestner L, Wagner C, Recktenwald SM. Effect of Cell Age and Membrane Rigidity on Red Blood Cell Shape in Capillary Flow. Cells 2023; 12:1529. [PMID: 37296651 PMCID: PMC10252257 DOI: 10.3390/cells12111529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Blood flow in the microcirculatory system is crucially affected by intrinsic red blood cell (RBC) properties, such as their deformability. In the smallest vessels of this network, RBCs adapt their shapes to the flow conditions. Although it is known that the age of RBCs modifies their physical properties, such as increased cytosol viscosity and altered viscoelastic membrane properties, the evolution of their shape-adapting abilities during senescence remains unclear. In this study, we investigated the effect of RBC properties on the microcapillary in vitro flow behavior and their characteristic shapes in microfluidic channels. For this, we fractioned RBCs from healthy donors according to their age. Moreover, the membranes of fresh RBCs were chemically rigidified using diamide to study the effect of isolated graded-membrane rigidity. Our results show that a fraction of stable, asymmetric, off-centered slipper-like cells at high velocities decreases with increasing age or diamide concentration. However, while old cells form an enhanced number of stable symmetric croissants at the channel centerline, this shape class is suppressed for purely rigidified cells with diamide. Our study provides further knowledge about the distinct effects of age-related changes of intrinsic cell properties on the single-cell flow behavior of RBCs in confined flows due to inter-cellular age-related cell heterogeneity.
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Affiliation(s)
- Mohammed Nouaman
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Alexis Darras
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Thomas John
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
| | - Greta Simionato
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
| | - Minke A. E. Rab
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
- Department of Hematology, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Richard van Wijk
- Central Diagnostic Laboratory-Research, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, The Netherlands
| | - Matthias W. Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, 66421 Homburg, Germany
| | - Lars Kaestner
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, 66421 Homburg, Germany
| | - Christian Wagner
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg
| | - Steffen M. Recktenwald
- Dynamics of Fluids, Department of Experimental Physics, Saarland University, 66123 Saarbrücken, Germany
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16
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Kaestner L, Champigneulle B, Stauffer É, Furian M, De Abreu J, John T, Nader E, Scheller A, Pichon A, Connes P, Robach P, Brugniaux JV, Borsch C, Rudloff S, Mairbäurl H, Verges S. Neocytolysis after return from high altitude (5100 m): Further evidence for absentia. Acta Physiol (Oxf) 2023:e14002. [PMID: 37199676 DOI: 10.1111/apha.14002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 05/19/2023]
Affiliation(s)
- Lars Kaestner
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Benoit Champigneulle
- University Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
- Department of Anesthesia and Critical Care, Grenoble Alpes University Hospital, Grenoble, France
| | - Émeric Stauffer
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, France
- Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
- Exploration Fonctionnelle Respiratoire, Médecine du Sport et de l'Activité Physique, Hospices Civils de Lyon, Hôpital Croix Rousse, Lyon, France
| | - Michael Furian
- University Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Jérémy De Abreu
- University Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Thomas John
- Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Elie Nader
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, France
- Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
| | - Anja Scheller
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, Saarland University, Homburg, Germany
| | - Aurélien Pichon
- University of Poitiers, MOVE Laboratory UR 20296, Faculté des Sciences du Sport, Poitiers, France
| | - Philippe Connes
- Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM) EA7424, Team "Vascular Biology and Red Blood Cell", Université Claude Bernard Lyon 1, Université de Lyon, France
- Laboratoire d'Excellence du Globule Rouge (Labex GR-Ex), PRES Sorbonne, Paris, France
| | - Paul Robach
- National School for Mountain Sports, Site of the National School for Skiing and Mountaineering (ENSA), Chamonix, France
| | - Julien V Brugniaux
- University Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
| | - Christian Borsch
- Analytical Platform, Stable Isotopes and Cell Biology, Institute of Nutritional Sciences, Justus Liebig University Giessen, Giessen, Germany
| | - Silvia Rudloff
- Analytical Platform, Stable Isotopes and Cell Biology, Institute of Nutritional Sciences, Justus Liebig University Giessen, Giessen, Germany
| | - Heimo Mairbäurl
- Translational Pneumology, University Hospital Heidelberg, Heidelberg, Germany
| | - Samuel Verges
- University Grenoble Alpes, Inserm, CHU Grenoble Alpes, HP2, Grenoble, France
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17
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Rashidi Y, Simionato G, Zhou Q, John T, Kihm A, Bendaoud M, Krüger T, Bernabeu MO, Kaestner L, Laschke MW, Menger MD, Wagner C, Darras A. Red blood cell lingering modulates hematocrit distribution in the microcirculation. Biophys J 2023; 122:1526-1537. [PMID: 36932676 PMCID: PMC10147840 DOI: 10.1016/j.bpj.2023.03.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 02/04/2023] [Accepted: 03/13/2023] [Indexed: 03/18/2023] Open
Abstract
The distribution of red blood cells (RBCs) in the microcirculation determines the oxygen delivery and solute transport to tissues. This process relies on the partitioning of RBCs at successive bifurcations throughout the microvascular network, and it has been known since the last century that RBCs partition disproportionately to the fractional blood flow rate, therefore leading to heterogeneity of the hematocrit (i.e., volume fraction of RBCs in blood) in microvessels. Usually, downstream of a microvascular bifurcation, the vessel branch with a higher fraction of blood flow receives an even higher fraction of RBC flux. However, both temporal and time-average deviations from this phase-separation law have been observed in recent studies. Here, we quantify how the microscopic behavior of RBC lingering (i.e., RBCs temporarily residing near the bifurcation apex with diminished velocity) influences their partitioning, through combined in vivo experiments and in silico simulations. We developed an approach to quantify the cell lingering at highly confined capillary-level bifurcations and demonstrate that it correlates with deviations of the phase-separation process from established empirical predictions by Pries et al. Furthermore, we shed light on how the bifurcation geometry and cell membrane rigidity can affect the lingering behavior of RBCs; e.g., rigid cells tend to linger less than softer ones. Taken together, RBC lingering is an important mechanism that should be considered when studying how abnormal RBC rigidity in diseases such as malaria and sickle-cell disease could hinder the microcirculatory blood flow or how the vascular networks are altered under pathological conditions (e.g., thrombosis, tumors, aneurysm).
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Affiliation(s)
- Yazdan Rashidi
- Experimental Physics, Saarland University, Saarbruecken, Germany.
| | - Greta Simionato
- Experimental Physics, Saarland University, Saarbruecken, Germany; Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Qi Zhou
- School of Engineering, Institute for Multiscale Thermofluids, University of Edinburgh, Edinburgh, United Kingdom
| | - Thomas John
- Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Alexander Kihm
- Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Mohammed Bendaoud
- Experimental Physics, Saarland University, Saarbruecken, Germany; Université Grenoble Alpes, CNRS, LIPhy, Grenoble, France; LaMCScI, Faculty of Sciences, Mohammed V University of Rabat, Rabat, Morocco
| | - Timm Krüger
- School of Engineering, Institute for Multiscale Thermofluids, University of Edinburgh, Edinburgh, United Kingdom
| | - Miguel O Bernabeu
- Centre for Medical Informatics, Usher Institute, University of Edinburgh, Edinburgh, United Kingdom; The Bayes Centre, University of Edinburgh, Edinburgh, United Kingdom
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbruecken, Germany; Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Michael D Menger
- Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, Saarbruecken, Germany; Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg, Luxembourg
| | - Alexis Darras
- Experimental Physics, Saarland University, Saarbruecken, Germany.
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18
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Hertz L, Flormann D, Birnbaumer L, Wagner C, Laschke MW, Kaestner L. Evidence of in vivo exogen protein uptake by red blood cells: a putative therapeutic concept. Blood Adv 2023; 7:1033-1039. [PMID: 36490356 PMCID: PMC10036505 DOI: 10.1182/bloodadvances.2022008404] [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: 06/22/2022] [Revised: 10/31/2022] [Accepted: 11/20/2022] [Indexed: 12/14/2022] Open
Abstract
For some molecular players in red blood cells (RBCs), the functional indications and molecular evidence are discrepant. One such protein is transient receptor potential channel of canonical subfamily, member 6 (TRPC6). Transcriptome analysis of reticulocytes revealed the presence of TRPC6 in mouse RBCs and its absence in human RBCs. We transfused TRPC6 knockout RBCs into wild-type mice and performed functional tests. We observed the "rescue" of TRPC6 within 10 days; however, the "rescue" was slower in splenectomized mice. The latter finding led us to mimic the mechanical challenge with the cantilever of an atomic force microscope and simultaneously carry out imaging by confocal (3D) microscopy. We observed the strong interaction of RBCs with the opposed surface at around 200 pN and the formation of tethers. The results of both the transfusion experiments and the atomic force spectroscopy suggest mechanically stimulated protein transfer to RBCs as a protein source in the absence of the translational machinery. This protein transfer mechanism has the potential to be utilized in therapeutic contexts, especially for hereditary diseases involving RBCs, such as hereditary xerocytosis or Gárdos channelopathy.
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Affiliation(s)
- Laura Hertz
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
| | - Daniel Flormann
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Lutz Birnbaumer
- Institute of Biomedical Research (BIOMED), Catholic University of Argentina, Buenos Aires, Argentina
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Christian Wagner
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany
- Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg City, Luxembourg
| | - Matthias W. Laschke
- Medical Faculty, Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany
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19
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Darras A, John T, Wagner C, Kaestner L. Erythrocyte Sedimentation Rate: A Physics-Driven Characterization in a Medical Context. J Vis Exp 2023. [PMID: 37036231 DOI: 10.3791/64502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023] Open
Abstract
Erythrocyte (or red blood cell) sedimentation rate (ESR) is a physical derived parameter of blood which is often used in routine health checks and medical diagnosis. For instance, in the case of inflammation, a higher ESR is observed due to the associated increase in fibrinogen and other plasma proteins. It was believed that this increase was due to the formation of larger aggregates of red blood cells (RBCs) caused by the increase in fibrinogen. Indeed, fibrinogen is an agent-fostering aggregation of RBCs and in the Stokes regime-assumed to be observed in blood-larger aggregates sediment faster. However, all models of ESR measurements based on this hypothesis require further specific physical assumptions, not required in any other system. Besides, modern studies in the field of colloidal suspensions have established that attractive particles form percolating aggregates (i.e. aggregates as wide as the container). The sedimentation of these colloids then follows a so-called "colloidal gel collapse". Recently, it has been shown that RBCs actually follow the same behavior. This hypothesis also allows to efficiently and analytically model the sedimentation curve of RBCs, from which robust and physically-meaningful descriptors can be extracted. This manuscript describes how to perform such an analysis, and discusses the benefits of this approach.
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Affiliation(s)
| | | | - Christian Wagner
- Experimental Physics, Saarland University; Department of Physics and Materials Science, University of Luxembourg
| | - Lars Kaestner
- Experimental Physics, Saarland University; Theoretical Medicine and Biosciences, Saarland University
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20
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Lazarus J, Yekani S, Omar A, Kaestner L, De Bruyn M. A novel Syphon ureteral access sheath shows clinical potential to reduce renal pressures and improve irrigant flow. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00832-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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21
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Bianchi P, Minetti G, Bogdanova A, Kaestner L. Editorial: Images from red cell. Front Physiol 2023; 13:1113951. [PMID: 36714320 PMCID: PMC9877328 DOI: 10.3389/fphys.2022.1113951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 12/13/2022] [Indexed: 01/13/2023] Open
Affiliation(s)
- Paola Bianchi
- Hematology Unit, Physiopathology of Anemias Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico Milano, Milan, Italy,*Correspondence: Paola Bianchi, ; Lars Kaestner,
| | - Giampaolo Minetti
- Red Blood Cell Research Group, Institute of Veterinary Physiology, and Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zurich, Switzerland,Zurich Center for Integrative Human Physiology (ZIHP), Zurich, Switzerland
| | - Anna Bogdanova
- Department of Biology and Biotechnology “L. Spallanzani”, Laboratories of Biochemistry, University of Pavia, Pavia, Italy
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany,Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany,*Correspondence: Paola Bianchi, ; Lars Kaestner,
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22
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Affiliation(s)
- Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland,*Correspondence: Anna Bogdanova, ; Lars Kaestner,
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, Homburg, Germany,Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany,*Correspondence: Anna Bogdanova, ; Lars Kaestner,
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23
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Fenk S, Melnikova EV, Anashkina AA, Poluektov YM, Zaripov PI, Mitkevich VA, Tkachev YV, Kaestner L, Minetti G, Mairbäurl H, Goede JS, Makarov AA, Petrushanko IY, Bogdanova A. Hemoglobin is an oxygen-dependent glutathione buffer adapting the intracellular reduced glutathione levels to oxygen availability. Redox Biol 2022; 58:102535. [PMID: 36413919 PMCID: PMC9679038 DOI: 10.1016/j.redox.2022.102535] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/21/2022] [Accepted: 11/08/2022] [Indexed: 11/17/2022] Open
Abstract
Fast changes in environmental oxygen availability translate into shifts in mitochondrial free radical production. An increase in intraerythrocytic reduced glutathione (GSH) during deoxygenation would support the detoxification of exogenous oxidants released into the circulation from hypoxic peripheral tissues. Although reported, the mechanism behind this acute oxygen-dependent regulation of GSH in red blood cells remains unknown. This study explores the role of hemoglobin (Hb) in the oxygen-dependent modulation of GSH levels in red blood cells. We have demonstrated that a decrease in Hb O2 saturation to 50% or less observed in healthy humans while at high altitude, or in red blood cell suspensions results in rising of the intraerythrocytic GSH level that is proportional to the reduction in Hb O2 saturation. This effect was not caused by the stimulation of GSH de novo synthesis or its release during deglutathionylation of Hb's cysteines. Using isothermal titration calorimetry and in silico modeling, we observed the non-covalent binding of four molecules of GSH to oxy-Hb and the release of two of them upon deoxygenation. Localization of the GSH binding sites within the Hb molecule was identified. Oxygen-dependent binding of GSH to oxy-Hb and its release upon deoxygenation occurred reciprocally to the binding and release of 2,3-bisphosphoglycerate. Furthermore, noncovalent binding of GSH to Hb moderately increased Hb oxygen affinity. Taken together, our findings have identified an adaptive mechanism by which red blood cells may provide an advanced antioxidant defense to respond to oxidative challenges immediately upon deoxygenation.
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Affiliation(s)
- Simone Fenk
- Red Blood Cell Research Group, Institute of Veterinary Physiology, and Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Elizaveta V Melnikova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Anastasia A Anashkina
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Yuri M Poluektov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Pavel I Zaripov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Vladimir A Mitkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Yaroslav V Tkachev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Lars Kaestner
- Theoretical Medicine and Biosciences and Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarland and Homburg, Germany
| | - Giampaolo Minetti
- Department of Biology and Biotechnology "L Spallanzani", Laboratories of Biochemistry, University of Pavia, Italy
| | - Heimo Mairbäurl
- Medical Clinic VII, Sports Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Jeroen S Goede
- Department of Internal Medicine, Division of Oncology and Hematology, Cantonal Hospital Winterthur, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), Switzerland
| | - Alexander A Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Irina Yu Petrushanko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russian Federation
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, and Center for Clinical Studies (ZKS), Vetsuisse Faculty, University of Zurich, Zurich, Switzerland; Zurich Center for Integrative Human Physiology (ZIHP), Switzerland.
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24
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Peikert K, Storch A, Hermann A, Landwehrmeyer GB, Walker RH, Simionato G, Kaestner L, Danek A. Commentary: Acanthocytes identified in Huntington's disease. Front Neurosci 2022; 16:1049676. [PMID: 36408380 PMCID: PMC9673475 DOI: 10.3389/fnins.2022.1049676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Affiliation(s)
- Kevin Peikert
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
- *Correspondence: Kevin Peikert
| | - Alexander Storch
- Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
- DZNE, Deutsches Zentrum für Neurodegenerative Erkrankungen, German Center for Neurodegenerative Diseases, Research Site Rostock/Greifswald, Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
- DZNE, Deutsches Zentrum für Neurodegenerative Erkrankungen, German Center for Neurodegenerative Diseases, Research Site Rostock/Greifswald, Rostock, Germany
| | | | - Ruth H. Walker
- Department of Neurology, James J. Peters Veterans Affairs Medical Center, Bronx, NY, United States
- Department of Neurology, Mount Sinai School of Medicine, New York, NY, United States
| | - Greta Simionato
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, Campus University Hospital, Homburg, Germany
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Adrian Danek
- Neurologische Klinik und Poliklinik, Ludwig-Maximilians-Universität München, Munich, Germany
- DZNE, Deutsches Zentrum für Neurodegenerative Erkrankungen, German Center for Neurodegenerative Diseases, Munich, Germany
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25
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Minetti G, Bogdanova AY, Mairbäurl H, Kaestner L. Space anemia unexplained: Red blood cells seem to be space-proof. Am J Hematol 2022; 97:E365-E367. [PMID: 35836385 DOI: 10.1002/ajh.26663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/09/2022] [Indexed: 01/24/2023]
Affiliation(s)
- Giampaolo Minetti
- Department of Biology and Biotechnology "L. Spallanzani", Laboratories of Biochemistry, University of Pavia, Pavia, Italy
| | - Anna Yu Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zürich, Zürich, Switzerland
| | - Heimo Mairbäurl
- Translational Pneumology, University Hospital Heidelberg, Heidelberg, Germany
| | - Lars Kaestner
- Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarbrücken, Germany.,Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, Saarbrücken, Germany
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26
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Kaestner L, Bogdanova A. Editorial: Insights in red blood cell physiology: 2021. Front Physiol 2022; 13:993287. [PMID: 36117690 PMCID: PMC9471552 DOI: 10.3389/fphys.2022.993287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 11/15/2022] Open
Affiliation(s)
- Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
- *Correspondence: Lars Kaestner, ; Anna Bogdanova,
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zürich, Zürich, Switzerland
- *Correspondence: Lars Kaestner, ; Anna Bogdanova,
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27
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Kaestner L. Artificial intelligence: Training the trainer. Br J Haematol 2022; 198:805-806. [PMID: 35822904 DOI: 10.1111/bjh.18358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 11/28/2022]
Abstract
Including artificial intelligence in haematological education is compulsory but should not be limited to students. Experienced haematologist and decision-makers in the clinical environment have at least similar needs. This is because of the tremendous potential, opportunities and benefits the timely inclusion of artificial intelligence offers in diagnosis, prediction and personalised therapy. Commentary on: Chai et al. Integrating artificial intelligence into haematology training and practice: opportunities, threats and proposed solutions. Br J Hematol 2022. https://doi.org/10.1111/bjh.18343.
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Affiliation(s)
- Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany.,Experimental Physics, Saarland University, Saarbrücken, Germany
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28
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Flormann D, Qiao M, Murciano N, Iacono G, Darras A, Hof S, Recktenwald SM, Rotordam MG, Becker N, Geisel J, Wagner C, von Lindern M, Akker E, Kaestner L. Transient receptor potential channel vanilloid type 2 in red cells of cannabis consumer. Am J Hematol 2022; 97:E180-E183. [PMID: 35179248 DOI: 10.1002/ajh.26509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Daniel Flormann
- Experimental Physics Saarland University Saarbrücken Germany
| | - Min Qiao
- Experimental Physics Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Saarland University Homburg Germany
| | - Nicoletta Murciano
- Theoretical Medicine and Biosciences Saarland University Homburg Germany
- Research and Development Nanion Technologies Munich Germany
| | - Giulia Iacono
- Department of Hematopoiesis Sanquin Research Amsterdam The Netherlands
- Landsteiner Laboratory Amsterdam UMC, University of Amsterdam Amsterdam The Netherlands
| | - Alexis Darras
- Experimental Physics Saarland University Saarbrücken Germany
| | - Sebastian Hof
- Experimental Physics Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Saarland University Homburg Germany
| | | | - Maria Giustina Rotordam
- Theoretical Medicine and Biosciences Saarland University Homburg Germany
- Research and Development Nanion Technologies Munich Germany
| | - Nadine Becker
- Research and Development Nanion Technologies Munich Germany
| | - Jürgen Geisel
- Clinical Chemistry and Laboratory Medicine Saarland University Hospital Homburg Germany
| | - Christian Wagner
- Experimental Physics Saarland University Saarbrücken Germany
- Physics and Materials Science Research Unit University of Luxembourg Luxembourg City Luxembourg
| | - Marieke von Lindern
- Department of Hematopoiesis Sanquin Research Amsterdam The Netherlands
- Landsteiner Laboratory Amsterdam UMC, University of Amsterdam Amsterdam The Netherlands
| | - Emile Akker
- Department of Hematopoiesis Sanquin Research Amsterdam The Netherlands
- Landsteiner Laboratory Amsterdam UMC, University of Amsterdam Amsterdam The Netherlands
| | - Lars Kaestner
- Experimental Physics Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Saarland University Homburg Germany
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29
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Recktenwald SM, Lopes MGM, Peter S, Hof S, Simionato G, Peikert K, Hermann A, Danek A, van Bentum K, Eichler H, Wagner C, Quint S, Kaestner L. Erysense, a Lab-on-a-Chip-Based Point-of-Care Device to Evaluate Red Blood Cell Flow Properties With Multiple Clinical Applications. Front Physiol 2022; 13:884690. [PMID: 35574449 PMCID: PMC9091344 DOI: 10.3389/fphys.2022.884690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/11/2022] [Indexed: 11/18/2022] Open
Abstract
In many medical disciplines, red blood cells are discovered to be biomarkers since they "experience" various conditions in basically all organs of the body. Classical examples are diabetes and hypercholesterolemia. However, recently the red blood cell distribution width (RDW), is often referred to, as an unspecific parameter/marker (e.g., for cardiac events or in oncological studies). The measurement of RDW requires venous blood samples to perform the complete blood cell count (CBC). Here, we introduce Erysense, a lab-on-a-chip-based point-of-care device, to evaluate red blood cell flow properties. The capillary chip technology in combination with algorithms based on artificial neural networks allows the detection of very subtle changes in the red blood cell morphology. This flow-based method closely resembles in vivo conditions and blood sample volumes in the sub-microliter range are sufficient. We provide clinical examples for potential applications of Erysense as a diagnostic tool [here: neuroacanthocytosis syndromes (NAS)] and as cellular quality control for red blood cells [here: hemodiafiltration (HDF) and erythrocyte concentrate (EC) storage]. Due to the wide range of the applicable flow velocities (0.1-10 mm/s) different mechanical properties of the red blood cells can be addressed with Erysense providing the opportunity for differential diagnosis/judgments. Due to these versatile properties, we anticipate the value of Erysense for further diagnostic, prognostic, and theragnostic applications including but not limited to diabetes, iron deficiency, COVID-19, rheumatism, various red blood cell disorders and anemia, as well as inflammation-based diseases including sepsis.
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Affiliation(s)
| | - Marcelle G. M. Lopes
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Cysmic GmbH, Saarbruecken, Germany
| | - Stephana Peter
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Saarbruecken, Germany
| | - Sebastian Hof
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Saarbruecken, Germany
| | - Greta Simionato
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, Campus University Hospital, Homburg, Germany
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- DZNE, Deutsches Zentrum für Neurodegenerative Erkrankungen, Research Site Rostock/Greifswald, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Adrian Danek
- Neurologische Klinik und Poliklinik, Ludwig-Maximilians-University, Munich, Germany
| | | | - Hermann Eichler
- Institute for Clinical Hemostaseology and Transfusion Medicine, Saarland University and Saarland University Hospital, Homburg, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Department of Physics and Materials Science, University of Luxembourg, Luxembourg City, Luxembourg
| | - Stephan Quint
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Cysmic GmbH, Saarbruecken, Germany
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Saarbruecken, Germany
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30
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Maurer F, John T, Makhro A, Bogdanova A, Minetti G, Wagner C, Kaestner L. Continuous Percoll Gradient Centrifugation of Erythrocytes-Explanation of Cellular Bands and Compromised Age Separation. Cells 2022; 11:cells11081296. [PMID: 35455975 PMCID: PMC9028966 DOI: 10.3390/cells11081296] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023] Open
Abstract
(1) Background: When red blood cells are centrifuged in a continuous Percoll-based density gradient, they form discrete bands. While this is a popular approach for red blood cell age separation, the mechanisms involved in banding were unknown. (2) Methods: Percoll centrifugations of red blood cells were performed under various experimental conditions and the resulting distributions analyzed. The age of the red blood cells was measured by determining the protein band 4.1a to 4.1b ratio based on western blots. Red blood cell aggregates, so-called rouleaux, were monitored microscopically. A mathematical model for the centrifugation process was developed. (3) Results: The red blood cell band pattern is reproducible but re-centrifugation of sub-bands reveals a new set of bands. This is caused by red blood cell aggregation. Based on the aggregation, our mathematical model predicts the band formation. Suppression of red blood cell aggregation reduces the band formation. (4) Conclusions: The red blood cell band formation in continuous Percoll density gradients could be explained physically by red blood cell aggregate formation. This aggregate formation distorts the density-based red blood cell age separation. Suppressing aggregation by osmotic swelling has a more severe effect on compromising the RBC age separation to a higher degree.
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Affiliation(s)
- Felix Maurer
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbrücken, Germany; (F.M.); (T.J.); (C.W.)
| | - Thomas John
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbrücken, Germany; (F.M.); (T.J.); (C.W.)
| | - Asya Makhro
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zürich, CH-8057 Zürich, Switzerland; (A.M.); (A.B.)
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zürich, CH-8057 Zürich, Switzerland; (A.M.); (A.B.)
| | - Giampaolo Minetti
- Laboratories of Biochemistry, Department of Biology and Biotechnology “L Spallanzani”, University of Pavia, I-27100 Pavia, Italy;
| | - Christian Wagner
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbrücken, Germany; (F.M.); (T.J.); (C.W.)
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg
| | - Lars Kaestner
- Dynamics of Fluids, Experimental Physics, Saarland University, 66123 Saarbrücken, Germany; (F.M.); (T.J.); (C.W.)
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, 66421 Homburg, Germany
- Correspondence:
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31
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Reichel F, Kräter M, Peikert K, Glaß H, Rosendahl P, Herbig M, Rivera Prieto A, Kihm A, Bosman G, Kaestner L, Hermann A, Guck J. Changes in Blood Cell Deformability in Chorea-Acanthocytosis and Effects of Treatment With Dasatinib or Lithium. Front Physiol 2022; 13:852946. [PMID: 35444561 PMCID: PMC9013823 DOI: 10.3389/fphys.2022.852946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/08/2022] [Indexed: 12/29/2022] Open
Abstract
Misshaped red blood cells (RBCs), characterized by thorn-like protrusions known as acanthocytes, are a key diagnostic feature in Chorea-Acanthocytosis (ChAc), a rare neurodegenerative disorder. The altered RBC morphology likely influences their biomechanical properties which are crucial for the cells to pass the microvasculature. Here, we investigated blood cell deformability of five ChAc patients compared to healthy controls during up to 1-year individual off-label treatment with the tyrosine kinase inhibitor dasatinib or several weeks with lithium. Measurements with two microfluidic techniques allowed us to assess RBC deformability under different shear stresses. Furthermore, we characterized leukocyte stiffness at high shear stresses. The results showed that blood cell deformability–including both RBCs and leukocytes - in general was altered in ChAc patients compared to healthy donors. Therefore, this study shows for the first time an impairment of leukocyte properties in ChAc. During treatment with dasatinib or lithium, we observed alterations in RBC deformability and a stiffness increase for leukocytes. The hematological phenotype of ChAc patients hinted at a reorganization of the cytoskeleton in blood cells which partly explains the altered mechanical properties observed here. These findings highlight the need for a systematic assessment of the contribution of impaired blood cell mechanics to the clinical manifestation of ChAc.
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Affiliation(s)
- Felix Reichel
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Martin Kräter
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Philipp Rosendahl
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Maik Herbig
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Alejandro Rivera Prieto
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Alexander Kihm
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Giel Bosman
- Department of Biochemistry, Radboud UMC, Nijmegen, Netherlands
| | - Lars Kaestner
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Rostock/Greifswald, Rostock, Germany
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Jochen Guck
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
- *Correspondence: Jochen Guck,
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32
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Nguyen DB, Tran HT, Kaestner L, Bernhardt I. The Relation Between Extracellular Vesicles Released From Red Blood Cells, Their Cargo, and the Clearance by Macrophages. Front Physiol 2022; 13:783260. [PMID: 35432007 PMCID: PMC9008836 DOI: 10.3389/fphys.2022.783260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 02/14/2022] [Indexed: 12/12/2022] Open
Abstract
Extracellular vesicles (EVs) are cell-derived membrane particles that include exosomes, ectosomes, microvesicles, microparticles, apoptotic bodies, and other EV subsets. EVs are involved in intercellular communication and the transport of macromolecules between cells. Here, we propose and test the ability of red blood cell (RBC)-derived EVs (RBC-EVs) as putative drug carriers. EVs were produced by treating RBCs with Phorbol-12-myristate-13-acetate (PMA) and separating from the cells by differential centrifugation steps. RBC-EVs were characterized by size determination, flow cytometry, and scanning electron microscopy (SEM). EVs were loaded with DNA plasmids coding for the green fluorescent protein (GFP) by electroporation. The DNA-loaded EVs (DNA-EVs) were used to transfect THP-1-derived macrophages and analyzed by fluorescence microscopy and flow cytometry. The results showed that RBC-EVs had an almost spherical shape and a polydispersity in their size with an average of 197 ± 44 nm and with a zeta potential of −36 ± 8 mV. RBC-EVs were successfully loaded with DNA but associated with an increase of the polydispersity index (PdI) and showed a positive signal with Picogreen. DNA-EVs were almost completely taken up by macrophages within 24 h, however, resulting in the expression of the GFP in a subpopulation of macrophages. As the way, we designed that RBC-EVs could be potential nucleic acid carriers when the immune system was addressed. This study may contribute to the understanding of the role of EVs in the development of microvesicle-based vehicles.
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Affiliation(s)
- Duc Bach Nguyen
- Department of Molecular Biology, Faculty of Biotechnology, Vietnam National University of Agriculture, Hanoi, Vietnam
- *Correspondence: Duc Bach Nguyen,
| | - Hanh Triet Tran
- Division of Aquacultural Biotechnology, Biotechnology Center of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbruecken, Germany
| | - Ingolf Bernhardt
- Laboratory of Biophysics, Faculty of Natural and Technical Sciences, Saarland University, Saarbruecken, Germany
- Ingolf Bernhardt,
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Simionato G, Rabe A, Gallego-Murillo JS, van der Zwaan C, Hoogendijk AJ, van den Biggelaar M, Minetti G, Bogdanova A, Mairbäurl H, Wagner C, Kaestner L, van den Akker E. In Vitro Erythropoiesis at Different pO 2 Induces Adaptations That Are Independent of Prior Systemic Exposure to Hypoxia. Cells 2022; 11:cells11071082. [PMID: 35406648 PMCID: PMC8997720 DOI: 10.3390/cells11071082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 12/23/2022] Open
Abstract
Hypoxia is associated with increased erythropoietin (EPO) release to drive erythropoiesis. At high altitude, EPO levels first increase and then decrease, although erythropoiesis remains elevated at a stable level. The roles of hypoxia and related EPO adjustments are not fully understood, which has contributed to the formulation of the theory of neocytolysis. We aimed to evaluate the role of oxygen exclusively on erythropoiesis, comparing in vitro erythroid differentiation performed at atmospheric oxygen, a lower oxygen concentration (three percent oxygen) and with cultures of erythroid precursors isolated from peripheral blood after a 19-day sojourn at high altitude (3450 m). Results highlight an accelerated erythroid maturation at low oxygen and more concave morphology of reticulocytes. No differences in deformability were observed in the formed reticulocytes in the tested conditions. Moreover, hematopoietic stem and progenitor cells isolated from blood affected by hypoxia at high altitude did not result in different erythroid development, suggesting no retention of a high-altitude signature but rather an immediate adaptation to oxygen concentration. This adaptation was observed during in vitro erythropoiesis at three percent oxygen by a significantly increased glycolytic metabolic profile. These hypoxia-induced effects on in vitro erythropoiesis fail to provide an intrinsic explanation of the concept of neocytolysis.
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Affiliation(s)
- Greta Simionato
- Department of Experimental Physics, University Campus, Building E2.6, Saarland University, 66123 Saarbrücken, Germany; (A.R.); (C.W.); (L.K.)
- Department of Experimental Surgery, Campus University Hospital, Building 65, Saarland University, 66421 Homburg, Germany
- Correspondence: (G.S.); (E.v.d.A.)
| | - Antonia Rabe
- Department of Experimental Physics, University Campus, Building E2.6, Saarland University, 66123 Saarbrücken, Germany; (A.R.); (C.W.); (L.K.)
| | - Joan Sebastián Gallego-Murillo
- Sanquin Research, Landsteiner Laboratory, Department of Hematopoiesis, Amsterdam UMC, University of Amsterdam, 1066 CX Amsterdam, The Netherlands;
- Department of Biotechnology, Faculty of Applied Sciences, Delft University of Technology, 2629 HZ Delft, The Netherlands
| | - Carmen van der Zwaan
- Sanquin Research, Landsteiner Laboratory, Department of Molecular Hematology, Amsterdam UMC, University of Amsterdam, 1066 CX Amsterdam, The Netherlands; (C.v.d.Z.); (A.J.H.); (M.v.d.B.)
| | - Arie Johan Hoogendijk
- Sanquin Research, Landsteiner Laboratory, Department of Molecular Hematology, Amsterdam UMC, University of Amsterdam, 1066 CX Amsterdam, The Netherlands; (C.v.d.Z.); (A.J.H.); (M.v.d.B.)
| | - Maartje van den Biggelaar
- Sanquin Research, Landsteiner Laboratory, Department of Molecular Hematology, Amsterdam UMC, University of Amsterdam, 1066 CX Amsterdam, The Netherlands; (C.v.d.Z.); (A.J.H.); (M.v.d.B.)
| | - Giampaolo Minetti
- Department of Biology and Biotechnology “L. Spallanzani”, Laboratories of Biochemistry, University of Pavia, I-27100 Pavia, Italy;
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zurich, CH-8057 Zurich, Switzerland;
| | - Heimo Mairbäurl
- University Hospital Heidelberg, Medical Clinic VII, Sports Medicine, 69120 Heidelberg, Germany;
- Translational Lung Research Centre Heidelberg (TLRC), Part of the German Centre for Lung Research (DZL), 69120 Heidelberg, Germany
- Translational Pneumology, University Hospital Heidelberg, 69120 Heidelberg, Germany
| | - Christian Wagner
- Department of Experimental Physics, University Campus, Building E2.6, Saarland University, 66123 Saarbrücken, Germany; (A.R.); (C.W.); (L.K.)
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg City, Luxembourg
| | - Lars Kaestner
- Department of Experimental Physics, University Campus, Building E2.6, Saarland University, 66123 Saarbrücken, Germany; (A.R.); (C.W.); (L.K.)
- Theoretical Medicine and Biosciences, Campus University Hospital, Building 61.4, Saarland University, 66421 Homburg, Germany
| | - Emile van den Akker
- Sanquin Research, Landsteiner Laboratory, Department of Hematopoiesis, Amsterdam UMC, University of Amsterdam, 1066 CX Amsterdam, The Netherlands;
- Correspondence: (G.S.); (E.v.d.A.)
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Darras A, Dasanna AK, John T, Gompper G, Kaestner L, Fedosov DA, Wagner C. Erythrocyte Sedimentation: Collapse of a High-Volume-Fraction Soft-Particle Gel. Phys Rev Lett 2022; 128:088101. [PMID: 35275655 DOI: 10.1103/physrevlett.128.088101] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
The erythrocyte sedimentation rate is one of the oldest medical diagnostic methods whose physical mechanisms remain debatable today. Using both light microscopy and mesoscale cell-level simulations, we show that erythrocytes form a soft-particle gel. Furthermore, the high volume fraction of erythrocytes, their deformability, and weak attraction lead to unusual properties of this gel. A theoretical model for the gravitational collapse is developed, whose predictions are in agreement with detailed macroscopic measurements of the interface velocity.
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Affiliation(s)
- Alexis Darras
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
| | - Anil Kumar Dasanna
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Thomas John
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
| | - Gerhard Gompper
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Lars Kaestner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany
| | - Dmitry A Fedosov
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
- Department of Physics and Materials Science, University of Luxembourg, L-1511, Luxembourg City, Luxembourg
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von Lindern M, Egée S, Bianchi P, Kaestner L. The Function of Ion Channels and Membrane Potential in Red Blood Cells: Toward a Systematic Analysis of the Erythroid Channelome. Front Physiol 2022; 13:824478. [PMID: 35177994 PMCID: PMC8844196 DOI: 10.3389/fphys.2022.824478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/04/2022] [Indexed: 01/14/2023] Open
Abstract
Erythrocytes represent at least 60% of all cells in the human body. During circulation, they experience a huge variety of physical and chemical stimulations, such as pressure, shear stress, hormones or osmolarity changes. These signals are translated into cellular responses through ion channels that modulate erythrocyte function. Ion channels in erythrocytes are only recently recognized as utmost important players in physiology and pathophysiology. Despite this awareness, their signaling, interactions and concerted regulation, such as the generation and effects of “pseudo action potentials”, remain elusive. We propose a systematic, conjoined approach using molecular biology, in vitro erythropoiesis, state-of-the-art electrophysiological techniques, and channelopathy patient samples to decipher the role of ion channel functions in health and disease. We need to overcome challenges such as the heterogeneity of the cell population (120 days lifespan without protein renewal) or the access to large cohorts of patients. Thereto we will use genetic manipulation of progenitors, cell differentiation into erythrocytes, and statistically efficient electrophysiological recordings of ion channel activity.
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Affiliation(s)
- Marieke von Lindern
- Sanquin Research and Landsteiner Laboratory, Department of Hematopoiesis, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
- Department of Cell Biology and Genetics, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Stéphane Egée
- Integrative Biology of Marine Models, Station Biologique de Roscoff, CNRS, UMR 8227, Sorbonne Université, Roscoff Cedex, France
- Laboratoire d’Excellence GR-Ex, Paris, France
| | - Paola Bianchi
- Pathophysiology of Anemia Unit, Hematology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico of Milan, Milan, Italy
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Medical Faculty, Saarland University, Homburg, Germany
- Dynamics of Fluids, Experimental Physics, Saarland University, Saarbrücken, Germany
- *Correspondence: Lars Kaestner,
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Dasanna AK, Darras A, John T, Gompper G, Kaestner L, Wagner C, Fedosov DA. Erythrocyte sedimentation: Effect of aggregation energy on gel structure during collapse. Phys Rev E 2022; 105:024610. [PMID: 35291110 DOI: 10.1103/physreve.105.024610] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
The erythrocyte (or red blood cell) sedimentation rate (ESR) is commonly interpreted as a measure of cell aggregation and as a biomarker of inflammation. It is well known that an increase of fibrinogen concentration, an aggregation-inducing protein for erythrocytes, leads to an increase of the sedimentation rate of erythrocytes, which is generally explained through the formation and faster settling of large disjoint aggregates. However, many aspects of erythrocyte sedimentation conform well with the collapse of a particle gel rather than with the sedimentation of disjoint aggregates. Using experiments and cell-level numerical simulations, we systematically investigate the dependence of ESR on fibrinogen concentration and its relation to the microstructure of the gel-like erythrocyte suspension. We show that for physiological aggregation interactions, an increase in the attraction strength between cells results in a cell network with larger void spaces. This geometrical change in the network structure occurs due to anisotropic shape and deformability of erythrocytes and leads to an increased gel permeability and faster sedimentation. Our results provide a comprehensive relation between the ESR and the cell-level structure of erythrocyte suspensions and support the gel hypothesis in the interpretation of blood sedimentation.
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Affiliation(s)
- Anil Kumar Dasanna
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Alexis Darras
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
| | - Thomas John
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
| | - Gerhard Gompper
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - Lars Kaestner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany
- Department of Physics and Materials Science, University of Luxembourg, L-1511 Luxembourg City, Luxembourg
| | - Dmitry A Fedosov
- Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany
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Darras A, Breunig HG, John T, Zhao R, Koch J, Kummerow C, König K, Wagner C, Kaestner L. Imaging Erythrocyte Sedimentation in Whole Blood. Front Physiol 2022; 12:729191. [PMID: 35153805 PMCID: PMC8832033 DOI: 10.3389/fphys.2021.729191] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 11/23/2021] [Indexed: 11/13/2022] Open
Abstract
The erythrocyte sedimentation rate (ESR) is one of the oldest medical diagnostic tools. However, currently there is some debate on the structure formed by the cells during the sedimentation process. While the conventional view is that erythrocytes sediment as separate aggregates, others have suggested that they form a percolating gel, similar to other colloidal suspensions. However, visualization of aggregated erythrocytes, which would settle the question, has always been challenging. Direct methods usually study erythrocytes in 2D situations or low hematocrit (∼1%). Indirect methods, such as scattering or electric measurements, provide insight on the suspension evolution, but cannot directly discriminate between open or percolating structures. Here, we achieved a direct probing of the structures formed by erythrocytes in blood at stasis. We focused on blood samples at rest with controlled hematocrit of 45%, from healthy donors, and report observations from three different optical imaging techniques: direct light transmission through thin samples, two-photon microscopy and light-sheet microscopy. The three techniques, used in geometries with thickness from 150 μm to 3 mm, highlight that erythrocytes form a continuous network with characteristic cracks, i.e., a colloidal gel. The characteristic distance between the main cracks is of the order of ∼100 μm. A complete description of the structure then requires a field of view of the order of ∼1 mm, in order to obtain a statistically relevant number of structural elements. A quantitative analysis of the erythrocyte related processes and interactions during the sedimentation need a further refinement of the experimental set-ups.
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Affiliation(s)
- Alexis Darras
- Experimental Physics, Saarland University, Saarbrücken, Germany
- *Correspondence: Alexis Darras,
| | - Hans Georg Breunig
- Biophotonics and Laser Technology, Saarland University, Saarbrücken, Germany
| | - Thomas John
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Renping Zhao
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, Homburg, Germany
| | - Johannes Koch
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, Homburg, Germany
| | - Carsten Kummerow
- Department of Biophysics, Center for Integrative Physiology and Molecular Medicine, School of Medicine, Saarland University, Homburg, Germany
| | - Karsten König
- Biophotonics and Laser Technology, Saarland University, Saarbrücken, Germany
- JenLab GmbH, Berlin, Germany
| | - Christian Wagner
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Department of Physics and Materials Science, University of Luxembourg, Luxembourg City, Luxembourg
| | - Lars Kaestner
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Lars Kaestner,
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Recktenwald SM, Simionato G, Lopes MGM, Gamboni F, Dzieciatkowska M, Meybohm P, Zacharowski K, von Knethen A, Wagner C, Kaestner L, D'Alessandro A, Quint S. Cross-talk between red blood cells and plasma influences blood flow and omics phenotypes in severe COVID-19. eLife 2022; 11:81316. [PMID: 36537079 PMCID: PMC9767455 DOI: 10.7554/elife.81316] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 11/27/2022] [Indexed: 12/24/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) is caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) and can affect multiple organs, among which is the circulatory system. Inflammation and mortality risk markers were previously detected in COVID-19 plasma and red blood cells (RBCs) metabolic and proteomic profiles. Additionally, biophysical properties, such as deformability, were found to be changed during the infection. Based on such data, we aim to better characterize RBC functions in COVID-19. We evaluate the flow properties of RBCs in severe COVID-19 patients admitted to the intensive care unit by using microfluidic techniques and automated methods, including artificial neural networks, for an unbiased RBC analysis. We find strong flow and RBC shape impairment in COVID-19 samples and demonstrate that such changes are reversible upon suspension of COVID-19 RBCs in healthy plasma. Vice versa, healthy RBCs resemble COVID-19 RBCs when suspended in COVID-19 plasma. Proteomics and metabolomics analyses allow us to detect the effect of plasma exchanges on both plasma and RBCs and demonstrate a new role of RBCs in maintaining plasma equilibria at the expense of their flow properties. Our findings provide a framework for further investigations of clinical relevance for therapies against COVID-19 and possibly other infectious diseases.
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Affiliation(s)
- Steffen M Recktenwald
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany
| | - Greta Simionato
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany,Institute for Clinical and Experimental Surgery, Campus University Hospital, Saarland UniversityHomburgGermany
| | - Marcelle GM Lopes
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany,Cysmic GmbHSaarbrückenGermany
| | - Fabia Gamboni
- Department of Biochemistry and Molecular Genetics, University of Colorado DenverAuroraUnited States
| | - Monika Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado DenverAuroraUnited States
| | - Patrick Meybohm
- Department of Anesthesiology, Intensive Care, Emergency and Pain Medicine, University Hospital WuerzburgWuerzburgGermany
| | - Kai Zacharowski
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtFrankfurtGermany,Fraunhofer Institute for Translational Medicine and Pharmacology ITMPFrankfurtGermany
| | - Andreas von Knethen
- Department of Anesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital FrankfurtFrankfurtGermany,Fraunhofer Institute for Translational Medicine and Pharmacology ITMPFrankfurtGermany
| | - Christian Wagner
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany,Department of Physics and Materials Science, University of LuxembourgLuxembourg CityLuxembourg
| | - Lars Kaestner
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany,Theoretical Medicine and Biosciences, Campus University Hospital, Saarland UniversityHomburgGermany
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado DenverAuroraUnited States
| | - Stephan Quint
- Dynamics of Fluids, Department of Experimental Physics, Saarland UniversitySaarbrückenGermany,Cysmic GmbHSaarbrückenGermany
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Recktenwald SM, Kaestner L, Yu. Bogdanova A, Minetti G, Klein M, Mairbäurl H. "So is science …" 1 : No evidence for neocytolysis on descending the mountains (Response to Rice and Gunga). Acta Physiol (Oxf) 2021; 233:e13709. [PMID: 34197698 DOI: 10.1111/apha.13709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Lars Kaestner
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Campus University HospitalSaarland University Saarbrücken Germany
| | - Anna Yu. Bogdanova
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Giampaolo Minetti
- Department of Biology and Biotechology "L Spallanzani", Laboratories of Biochemistry University of Pavia Pavia Italy
| | - Marie Klein
- Medical Clinic VII Sports Medicine University Hospital Heidelberg Heidelberg Germany
| | - Heimo Mairbäurl
- Translational Pneumology University Hospital Heidelberg Heidelberg Germany
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Mairbäurl H, Kaestner L, Yu Bogdanova A, Klein M, Minetti G. Of mice and men 1 : How to achieve a better life with lower total Hb mass after returning from hypoxia to normoxia. (response to Song and colleagues). Acta Physiol (Oxf) 2021; 233:e13720. [PMID: 34292651 DOI: 10.1111/apha.13720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Heimo Mairbäurl
- Translational Pneumology University Hospital Heidelberg Heidelberg Germany
| | - Lars Kaestner
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Campus University HospitalSaarland University Saarbrücken Germany
| | - Anna Yu Bogdanova
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Marie Klein
- Medical Clinic VII Sports Medicine University Hospital Heidelberg Heidelberg Germany
| | - Giampaolo Minetti
- Department of Biology and Biotechology "L Spallanzani" Laboratories of Biochemistry University of Pavia Pavia Italy
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Kaestner L, Moore A, Salukazana S, Howlett J, De Jager S, De Wet E, Lazarus J. “Bullet colic” following renal gunshot wound. Trauma 2021. [DOI: 10.1177/1460408620962282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Selective non-operative management for penetrating injuries to the kidney is widely accepted. The management of a retained projectile within the kidney remains unclear. We present a case of bilateral renal gunshot wound (GSW) which was managed non-operatively. The patient presented with a peculiar complication of renal colic due to a migrated projectile 5 months post injury. Retained projectiles within the renal collecting system have a risk for stone formation and migration.
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Affiliation(s)
- L Kaestner
- University of Cape Town, Cape Town, South Africa
| | - A Moore
- University of Cape Town, Cape Town, South Africa
| | - S Salukazana
- University of Cape Town, Cape Town, South Africa
| | - J Howlett
- University of Cape Town, Cape Town, South Africa
| | - S De Jager
- University of Cape Town, Cape Town, South Africa
| | - E De Wet
- University of Cape Town, Cape Town, South Africa
| | - J Lazarus
- University of Cape Town, Cape Town, South Africa
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Klein M, Kaestner L, Bogdanova AY, Minetti G, Rudloff S, Lundby C, Makhro A, Seiler E, Cromvoirt A, Fenk S, Simionato G, Hertz L, Recktenwald S, Schäfer L, Haider T, Fried S, Borsch C, Marti HH, Sander A, Mairbäurl H. Absence of neocytolysis in humans returning from a 3-week high-altitude sojourn. Acta Physiol (Oxf) 2021; 232:e13647. [PMID: 33729672 DOI: 10.1111/apha.13647] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 01/27/2021] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 12/26/2022]
Abstract
AIMS Total haemoglobin mass (tot-Hb) increases during high-altitude acclimatization. Normalization of tot-Hb upon descent is thought to occur via neocytolysis, the selective destruction of newly formed erythrocytes. Because convincing experimental proof of neocytolysis is lacking, we performed a prospective study on erythrocyte survival after a stay at the Jungfraujoch Research Station (JFJRS; 3450 m). METHODS Newly formed erythrocytes of 12 male subjects (mean age 23.3 years) were age cohort labelled in normoxia (110 m) and during a 19-day high-altitude sojourn by ingestion of 13 C2- and 15 N-labelled glycine respectively. Elimination dynamics for erythrocytes produced in normoxia and at high altitude were measured by isotope ratio mass spectrometry of haem, by determining tot-Hb, reticulocyte counts, erythrocyte membrane protein 4.1a/4.1b ratio and by mathematical modelling. RESULTS Tot-Hb increased by 4.7% ± 2.7% at high altitude and returned to pre-altitude values within 11 days after descent. Elimination of 13 C- (normoxia) and 15 N- (high altitude) labelled erythrocytes was not different. Erythropoietin levels and counts of CD71-positive reticulocytes decreased rapidly after descent. The band 4.1a/4.1b ratio decreased at altitude and remained low for 3-4 days after descent and normalized slowly. There was no indication of haemolysis. CONCLUSION We confirm a rapid normalization of tot-Hb upon descent. Based on the lack of accelerated removal of age cohorts of erythrocytes labelled at high altitude, on patterns of changes in reticulocyte counts and of the band 4.1a/4.1b ratio and on modelling, this decrease did not occur via neocytolysis, but by a reduced rate of erythropoiesis along with normal clearance of senescent erythrocytes.
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Affiliation(s)
- Marie Klein
- Medical Clinic VII Sports Medicine University Hospital Heidelberg Heidelberg Germany
- Translational Pneumology University Hospital Heidelberg Heidelberg Germany
| | - Lars Kaestner
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Campus University HospitalSaarland University Homburg Germany
| | - Anna Y. Bogdanova
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Giampaolo Minetti
- Department of Biology and Biotechnology "L Spallanzani" Laboratories of Biochemistry University of Pavia Pavia Italy
| | - Silvia Rudloff
- Analytical Platform Stable Isotopes, and Cell Biology Institute of Nutritional Sciences Justus Liebig University Giessen Giessen Germany
| | - Carsten Lundby
- The Centre of Inflammation and Metabolism and the Centre for Physical Activity Research Rigshospitalet University of Copenhagen Hillerød Denmark
- Inland Norway University of Applied Sciences Lillehammer Norway
| | - Asya Makhro
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Elena Seiler
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Ankie Cromvoirt
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Simone Fenk
- Red Blood Cell Research Group Institute of Veterinary Physiology University of Zürich Zürich Switzerland
| | - Greta Simionato
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
- Theoretical Medicine and Biosciences Campus University HospitalSaarland University Homburg Germany
- Institute for Clinical and Experimental Surgery Saarland UniversityCampus University Hospital Homburg Germany
| | - Laura Hertz
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
| | - Steffen Recktenwald
- Experimental Physics Dynamics of Fluids Group Saarland University Saarbrücken Germany
| | - Larissa Schäfer
- Department of Anaesthesiology and Intensive Care Medicine University Hospital SalzburgParacelsus Medical University Salzburg Austria
| | - Thomas Haider
- Department of Cardiology University Hospital Zürich Zürich Switzerland
| | - Sebastian Fried
- Department of Anaesthesiology University Hospital Heidelberg Heidelberg Germany
| | - Christian Borsch
- Analytical Platform Stable Isotopes, and Cell Biology Institute of Nutritional Sciences Justus Liebig University Giessen Giessen Germany
| | - Hugo H. Marti
- Institute of Physiology and Pathophysiology University of Heidelberg Heidelberg Germany
| | - Anja Sander
- Institute of Medical Biometry and Informatics University Hospital Heidelberg Heidelberg Germany
| | - Heimo Mairbäurl
- Medical Clinic VII Sports Medicine University Hospital Heidelberg Heidelberg Germany
- Translational Pneumology University Hospital Heidelberg Heidelberg Germany
- Translational Lung Research Centre Heidelberg (TLRC) Part of the German Centre for Lung Research (DZL) Heidelberg Germany
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Egée S, Kaestner L. The Transient Receptor Potential Vanilloid Type 2 (TRPV2) Channel-A New Druggable Ca 2+ Pathway in Red Cells, Implications for Red Cell Ion Homeostasis. Front Physiol 2021; 12:677573. [PMID: 34177620 PMCID: PMC8222986 DOI: 10.3389/fphys.2021.677573] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 05/17/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Stéphane Egée
- Sorbonne Université, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, Roscoff Cedex, France
- Laboratoire d'Excellence GR-Ex, Paris, France
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Saarbrucken, Germany
- Experimental Physics, Saarland University, Saarbrucken, Germany
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Simionato G, van Wijk R, Quint S, Wagner C, Bianchi P, Kaestner L. Rare Anemias: Are Their Names Just Smoke and Mirrors? Front Physiol 2021; 12:690604. [PMID: 34177628 PMCID: PMC8222994 DOI: 10.3389/fphys.2021.690604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 05/17/2021] [Indexed: 12/03/2022] Open
Affiliation(s)
- Greta Simionato
- Institute for Clinical and Experimental Surgery, Campus University Hospital, Saarland University, Homburg, Germany.,Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarbrücken, Germany
| | - Richard van Wijk
- Central Diagnostic Laboratory - Research, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Stephan Quint
- Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarbrücken, Germany.,Cysmic GmbH, Saarbrücken, Germany
| | - Christian Wagner
- Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarbrücken, Germany.,Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg, Luxembourg
| | - Paola Bianchi
- Fondazione Instituto di Ricovero e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico Milano, Unità Operativa Complessa Ematologia, Unità Operativa Semplice Fisiopatologia delle Anemie, Milan, Italy
| | - Lars Kaestner
- Experimental Physics, Dynamics of Fluids Group, Saarland University, Saarbrücken, Germany.,Theoretical Medicine and Biosciences, Campus University Hospital, Saarland University, Homburg, Germany
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Pluke KD, Kaestner L. Lessons from a pilot study of screening for upper tract urothelial cell carcinoma in Lynch syndrome. S AFR J SURG 2021; 59:65a-65d. [PMID: 34212574] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND Lynch syndrome is a hereditary disorder, with a very high risk of developing colorectal carcinoma (CRC) and a predilection to develop other cancers, including upper tract urothelial carcinoma (UTUC). We aimed to assess the prevalence of UTUC in a Lynch syndrome cohort undergoing screening for CRC, to determine the need for a UTUC screening programme. METHODS Lynch syndrome patients were screened with urine dipstick for microscopic haematuria. Patients with confirmed microhaematuria were offered urine cytology, microscopy and culture, ultrasound (US) of their upper tracts and flexible cystoscopy. RESULTS Of the 89 patients screened, 86 had an MLH1 mutation and two had an MSH2 mutation. Eleven of the 12 patients who had microscopic haematuria were female. Ten patients had urinary tract infections. One patient had follicular cystitis and another had a simple renal cyst. No patients had hydronephrosis on ultrasound. All urine cytology specimens were negative for malignancy. CONCLUSION No cases of UTUC were detected in our cohort during this study. A more rational screening protocol in this group may be to screen patients for UTUC with known MSH2 mutations at an earlier age (over 35).
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Affiliation(s)
- K D Pluke
- Division of Urology, Department of Surgery, Groote Schuur Hospital, University of Cape Town, South Africa
| | - L Kaestner
- Division of Urology, Department of Surgery, Groote Schuur Hospital, University of Cape Town, South Africa
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Simionato G, Hinkelmann K, Chachanidze R, Bianchi P, Fermo E, van Wijk R, Leonetti M, Wagner C, Kaestner L, Quint S. Red blood cell phenotyping from 3D confocal images using artificial neural networks. PLoS Comput Biol 2021; 17:e1008934. [PMID: 33983926 PMCID: PMC8118337 DOI: 10.1371/journal.pcbi.1008934] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 04/01/2021] [Indexed: 12/15/2022] Open
Abstract
The investigation of cell shapes mostly relies on the manual classification of 2D images, causing a subjective and time consuming evaluation based on a portion of the cell surface. We present a dual-stage neural network architecture for analyzing fine shape details from confocal microscopy recordings in 3D. The system, tested on red blood cells, uses training data from both healthy donors and patients with a congenital blood disease, namely hereditary spherocytosis. Characteristic shape features are revealed from the spherical harmonics spectrum of each cell and are automatically processed to create a reproducible and unbiased shape recognition and classification. The results show the relation between the particular genetic mutation causing the disease and the shape profile. With the obtained 3D phenotypes, we suggest our method for diagnostics and theragnostics of blood diseases. Besides the application employed in this study, our algorithms can be easily adapted for the 3D shape phenotyping of other cell types and extend their use to other applications, such as industrial automated 3D quality control.
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Affiliation(s)
- Greta Simionato
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
- Institute for Clinical and Experimental Surgery, Saarland University, Campus University Hospital, Homburg, Germany
| | - Konrad Hinkelmann
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
| | - Revaz Chachanidze
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
- CNRS, University Grenoble Alpes, Grenoble INP, LRP, Grenoble, France
| | - Paola Bianchi
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Elisa Fermo
- Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Richard van Wijk
- Department of Clinical Chemistry & Haematology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marc Leonetti
- CNRS, University Grenoble Alpes, Grenoble INP, LRP, Grenoble, France
| | - Christian Wagner
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
- Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg City, Luxembourg
| | - Lars Kaestner
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Campus University Hospital, Homburg, Germany
| | - Stephan Quint
- Department of Experimental Physics, Saarland University, Campus E2.6, Saarbrücken, Germany
- Cysmic GmbH, Saarland University, Saarbrücken, Germany
- * E-mail:
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48
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Rabe A, Kihm A, Darras A, Peikert K, Simionato G, Dasanna AK, Glaß H, Geisel J, Quint S, Danek A, Wagner C, Fedosov DA, Hermann A, Kaestner L. The Erythrocyte Sedimentation Rate and Its Relation to Cell Shape and Rigidity of Red Blood Cells from Chorea-Acanthocytosis Patients in an Off-Label Treatment with Dasatinib. Biomolecules 2021; 11:biom11050727. [PMID: 34066168 PMCID: PMC8151862 DOI: 10.3390/biom11050727] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/24/2022] Open
Abstract
Background: Chorea-acanthocytosis (ChAc) is a rare hereditary neurodegenerative disease with deformed red blood cells (RBCs), so-called acanthocytes, as a typical marker of the disease. Erythrocyte sedimentation rate (ESR) was recently proposed as a diagnostic biomarker. To date, there is no treatment option for affected patients, but promising therapy candidates, such as dasatinib, a Lyn-kinase inhibitor, have been identified. Methods: RBCs of two ChAc patients during and after dasatinib treatment were characterized by the ESR, clinical hematology parameters and the 3D shape classification in stasis based on an artificial neural network. Furthermore, mathematical modeling was performed to understand the contribution of cell morphology and cell rigidity to the ESR. Microfluidic measurements were used to compare the RBC rigidity between ChAc patients and healthy controls. Results: The mechano-morphological characterization of RBCs from two ChAc patients in an off-label treatment with dasatinib revealed differences in the ESR and the acanthocyte count during and after the treatment period, which could not directly be related to each other. Clinical hematology parameters were in the normal range. Mathematical modeling indicated that RBC rigidity is more important for delayed ESR than cell shape. Microfluidic experiments confirmed a higher rigidity in the normocytes of ChAc patients compared to healthy controls. Conclusions: The results increase our understanding of the role of acanthocytes and their associated properties in the ESR, but the data are too sparse to answer the question of whether the ESR is a suitable biomarker for treatment success, whereas a correlation between hematological and neuronal phenotype is still subject to verification.
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Affiliation(s)
- Antonia Rabe
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany;
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Alexander Kihm
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Alexis Darras
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Greta Simionato
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Institute for Clinical and Experimental Surgery, Saarland University, 66424 Homburg, Germany
| | - Anil Kumar Dasanna
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (D.A.F.)
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
| | - Jürgen Geisel
- Central Laboratory, Saarland University Medical Centre, 66424 Homburg, Germany;
| | - Stephan Quint
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Cysmic GmbH, 66123 Saarbrücken, Germany
| | - Adrian Danek
- Neurologische Klinik und Poliklinik, Ludwig-Maximilians-Universität, 81366 Munich, Germany;
| | - Christian Wagner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Physics and Materials Science Research Unit, University of Luxembourg, 1511 Luxembourg, Luxembourg
| | - Dmitry A. Fedosov
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (D.A.F.)
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
- DZNE, German Center for Neurodegenerative Diseases, Research Site Rostock/Greifswald, 18051 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany;
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Correspondence: ; Tel.: +49-681-302-2417
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Darras A, Peikert K, Rabe A, Yaya F, Simionato G, John T, Dasanna AK, Buvalyy S, Geisel J, Hermann A, Fedosov DA, Danek A, Wagner C, Kaestner L. Acanthocyte Sedimentation Rate as a Diagnostic Biomarker for Neuroacanthocytosis Syndromes: Experimental Evidence and Physical Justification. Cells 2021; 10:788. [PMID: 33918219 PMCID: PMC8067274 DOI: 10.3390/cells10040788] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/26/2021] [Accepted: 03/30/2021] [Indexed: 01/28/2023] Open
Abstract
(1) Background: Chorea-acanthocytosis and McLeod syndrome are the core diseases among the group of rare neurodegenerative disorders called neuroacanthocytosis syndromes (NASs). NAS patients have a variable number of irregularly spiky erythrocytes, so-called acanthocytes. Their detection is a crucial but error-prone parameter in the diagnosis of NASs, often leading to misdiagnoses. (2) Methods: We measured the standard Westergren erythrocyte sedimentation rate (ESR) of various blood samples from NAS patients and healthy controls. Furthermore, we manipulated the ESR by swapping the erythrocytes and plasma of different individuals, as well as replacing plasma with dextran. These measurements were complemented by clinical laboratory data and single-cell adhesion force measurements. Additionally, we followed theoretical modeling approaches. (3) Results: We show that the acanthocyte sedimentation rate (ASR) with a two-hour read-out is significantly prolonged in chorea-acanthocytosis and McLeod syndrome without overlap compared to the ESR of the controls. Mechanistically, through modern colloidal physics, we show that acanthocyte aggregation and plasma fibrinogen levels slow down the sedimentation. Moreover, the inverse of ASR correlates with the number of acanthocytes (R2=0.61, p=0.004). (4) Conclusions: The ASR/ESR is a clear, robust and easily obtainable diagnostic marker. Independently of NASs, we also regard this study as a hallmark of the physical view of erythrocyte sedimentation by describing anticoagulated blood in stasis as a percolating gel, allowing the application of colloidal physics theory.
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Affiliation(s)
- Alexis Darras
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (A.H.)
- Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01062 Dresden, Germany
| | - Antonia Rabe
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany
| | - François Yaya
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
- Laboratoire Interdisciplinaire de Physique, UMR 5588, 38402 Saint Martin d’Hères, France
| | - Greta Simionato
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
- Institute for Clinical and Experimental Surgery, Saarland University, 66424 Homburg, Germany;
| | - Thomas John
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
| | - Anil Kumar Dasanna
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (S.B.); (D.A.F.)
| | - Semen Buvalyy
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (S.B.); (D.A.F.)
| | - Jürgen Geisel
- Institute for Clinical and Experimental Surgery, Saarland University, 66424 Homburg, Germany;
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (A.H.)
- Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01062 Dresden, Germany
- DZNE, German Center for Neurodegenerative Diseases, Research Site Rostock/Greifswald, 18051 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany
| | - Dmitry A. Fedosov
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (S.B.); (D.A.F.)
| | - Adrian Danek
- Neurologische Klinik und Poliklinik, Ludwig-Maximilians-Universität, 81366 Munich, Germany;
| | - Christian Wagner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
- Physics and Materials Science Research Unit, University of Luxembourg, 1511 Luxembourg, Luxembourg
| | - Lars Kaestner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.R.); (F.Y.); (G.S.); (T.J.); (C.W.)
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany
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Wang J, Hertz L, Ruppenthal S, El Nemer W, Connes P, Goede JS, Bogdanova A, Birnbaumer L, Kaestner L. Lysophosphatidic Acid-Activated Calcium Signaling Is Elevated in Red Cells from Sickle Cell Disease Patients. Cells 2021; 10:456. [PMID: 33672679 PMCID: PMC7924404 DOI: 10.3390/cells10020456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 12/15/2022] Open
Abstract
(1) Background: It is known that sickle cells contain a higher amount of Ca2+ compared to healthy red blood cells (RBCs). The increased Ca2+ is associated with the most severe symptom of sickle cell disease (SCD), the vaso-occlusive crisis (VOC). The Ca2+ entry pathway received the name of Psickle but its molecular identity remains only partly resolved. We aimed to map the involved Ca2+ signaling to provide putative pharmacological targets for treatment. (2) Methods: The main technique applied was Ca2+ imaging of RBCs from healthy donors, SCD patients and a number of transgenic mouse models in comparison to wild-type mice. Life-cell Ca2+ imaging was applied to monitor responses to pharmacological targeting of the elements of signaling cascades. Infection as a trigger of VOC was imitated by stimulation of RBCs with lysophosphatidic acid (LPA). These measurements were complemented with biochemical assays. (3) Results: Ca2+ entry into SCD RBCs in response to LPA stimulation exceeded that of healthy donors. LPA receptor 4 levels were increased in SCD RBCs. Their activation was followed by the activation of Gi protein, which in turn triggered opening of TRPC6 and CaV2.1 channels via a protein kinase Cα and a MAP kinase pathway, respectively. (4) Conclusions: We found a new Ca2+ signaling cascade that is increased in SCD patients and identified new pharmacological targets that might be promising in addressing the most severe symptom of SCD, the VOC.
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Affiliation(s)
- Jue Wang
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler, Tyler, TX 75708, USA;
| | - Laura Hertz
- Theoretical Medicine and Biosciences, Saarland University, 66421 Homburg, Germany;
- Experimental Physics, Dynamics of Fluids, Saarland University, 66123 Saarbrücken, Germany;
| | - Sandra Ruppenthal
- Experimental Physics, Dynamics of Fluids, Saarland University, 66123 Saarbrücken, Germany;
- Gynaecology, Obstetrics and Reproductive Medicine, Saarland University Hospital, 66421 Homburg, Germany
| | - Wassim El Nemer
- Etablissement Français du Sang PACA-Corse, Aix Marseille Université, EFS, CNRS, ADES, 13005 Marseille, France;
- Laboratoire d’Excellence GR-Ex, 75015 Paris, France;
| | - Philippe Connes
- Laboratoire d’Excellence GR-Ex, 75015 Paris, France;
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Teal, University Claude Bernard Lyon 1, 69008 Lyon, France
| | - Jeroen S. Goede
- Division of Oncology and Hematology, Kantonsspital Winterthur, CH-8401 Winterthur, Switzerland;
| | - Anna Bogdanova
- Red Blood Cell Research Group, Institute of Veterinary Physiology, University of Zürich, CH-8057 Zürich, Switzerland;
| | - Lutz Birnbaumer
- Institute of Biomedical Research (BIOMED), Catholic University of Argentina, C1107AFF Buenos Aires, Argentina;
- Laboratory of Neurobiology, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, 66421 Homburg, Germany;
- Experimental Physics, Dynamics of Fluids, Saarland University, 66123 Saarbrücken, Germany;
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