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Leo M, DI Giacinto F, Nardini M, Mazzini A, Rossi C, Porceddu E, Papi M, Grieco A, DE Spirito M, Ciasca G. Erythrocyte viscoelastic recovery after liver transplantation in a cirrhotic patient affected by spur cell anaemia. J Microsc 2020; 280:287-296. [PMID: 32885445 DOI: 10.1111/jmi.12958] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/31/2020] [Accepted: 08/26/2020] [Indexed: 01/13/2023]
Abstract
In physiological conditions, red blood cells (RBCs) are capable of dramatic deformations when passing through the microvasculature. This extreme deformability is closely related to the RBC biconcave shape, to the fluidic nature of the haemoglobin and the cell membrane structure, primarily consisting of a phospholipid bilayer with an underlying two-dimensional spectrin network. In many pathological and inflammatory conditions, the shape and the extreme deformability of erythrocytes appear to be significantly altered. These findings have stimulated intense research towards the search and validation of novel erythrocyte-based mechanical biomarkers, useful for disease diagnosis and therapy monitoring. In this study, we investigated with Atomic Force Microscopy (AFM) the mechanical properties of erythrocytes obtained from a 68 years old cirrhotic man diagnosed with spur cell anaemia and cold agglutinated disease, before and after liver transplantation. Mechanical changes are compared with ultrastructural alterations as studied by scanning electron microscopy and discussed according to confocal fluorescence microscopy results, showing possible alterations induced by the cirrhotic environment at the level of the RBCs cytoskeletal organisation and lipidic composition. Taken together, the results here presented show that liver transplantation not only contributes to restoring the proper RBC morphology, but it also induces recovery of the physiological viscous behaviour of cells, further stressing the relevance of viscous and dissipative forces in determining the RBC biomechanical response.
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Affiliation(s)
- M Leo
- Internal Medicine, Gastroenterology and Hepatology, Fondazione Policlinico Universitario, Agostino Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - F DI Giacinto
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - M Nardini
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - A Mazzini
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - C Rossi
- Area Diagnostica di Laboratorio UOC Chimica, Biochimica e Biologia Molecolare, Fondazione Policlinico A. Gemelli IRCCS, Roma, Italy
| | - E Porceddu
- Internal Medicine, Gastroenterology and Hepatology, Fondazione Policlinico Universitario, Agostino Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - M Papi
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - A Grieco
- Liver Transplant Medicine Unit, Department of Gastroenterological, Endocrine and Metabolic Sciences, Fondazione Policlinico Universitario Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - M DE Spirito
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - G Ciasca
- Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy.,Dipartimento di Neuroscienze, Sezione di Fisica, Università Cattolica del Sacro Cuore, Roma, Italy
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Kozlova E, Chernysh A, Manchenko E, Sergunova V, Moroz V. Nonlinear Biomechanical Characteristics of Deep Deformation of Native RBC Membranes in Normal State and under Modifier Action. SCANNING 2018; 2018:1810585. [PMID: 30581527 PMCID: PMC6276460 DOI: 10.1155/2018/1810585] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 09/05/2018] [Indexed: 05/04/2023]
Abstract
The ability of membranes of native human red blood cells (RBCs) to bend into the cell to a depth comparable in size with physiological deformations was evaluated. For this, the methods of atomic force microscopy and atomic force spectroscopy were used. Nonlinear patterns of deep deformation (up to 600 nm) of RBC membranes were studied in normal state and under the action of modifiers: fixator (glutaraldehyde), natural oxidant (hemin), and exogenous intoxicator (zinc ions), in vitro. The experimental dependences of membrane bending for control RBC (normal) were approximated by the Hertz model to a depth up to 600 nm. The glutaraldehyde fixator and modifiers increased the absolute value of Young's modulus of membranes and changed the experimental dependences of probe indentation into the cells. Up to some depth h Hz, the force curves were approximated by the Hertz model, and for deeper indentations h > h Hz, the degree of the polynomial function was changed, the membrane stiffness increased, and the pattern of indentation became another and did not obey the Hertz model. Quantitative characteristics of nonlinear experimental dependences were calculated for deep bending of RBC membranes by approximating them by the degree polynomial function.
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Affiliation(s)
- Elena Kozlova
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, V.A. Negovsky Research Institute of General Reanimatology, 107031, 25 Petrovka Str., Build. 2, Moscow, Russia
- Sechenov First Moscow State Medical University (Sechenov University), 119991, 2-4 Bolshaya Pirogovskaya st, Moscow, Russia
| | - Aleksandr Chernysh
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, V.A. Negovsky Research Institute of General Reanimatology, 107031, 25 Petrovka Str., Build. 2, Moscow, Russia
- Sechenov First Moscow State Medical University (Sechenov University), 119991, 2-4 Bolshaya Pirogovskaya st, Moscow, Russia
| | - Ekaterina Manchenko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, V.A. Negovsky Research Institute of General Reanimatology, 107031, 25 Petrovka Str., Build. 2, Moscow, Russia
- Sechenov First Moscow State Medical University (Sechenov University), 119991, 2-4 Bolshaya Pirogovskaya st, Moscow, Russia
| | - Viktoria Sergunova
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, V.A. Negovsky Research Institute of General Reanimatology, 107031, 25 Petrovka Str., Build. 2, Moscow, Russia
| | - Viktor Moroz
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, V.A. Negovsky Research Institute of General Reanimatology, 107031, 25 Petrovka Str., Build. 2, Moscow, Russia
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