1
|
Arias CF, Valente-Leal N, Bertocchini F, Marques S, Acosta FJ, Fernandez-Arias C. A new role for erythropoietin in the homeostasis of red blood cells. Commun Biol 2024; 7:58. [PMID: 38191841 PMCID: PMC10774343 DOI: 10.1038/s42003-023-05758-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 12/29/2023] [Indexed: 01/10/2024] Open
Abstract
The regulation of red blood cell (RBC) homeostasis is widely assumed to rely on the control of cell production by erythropoietin (EPO) and the destruction of cells at a fixed, species-specific age. In this work, we show that such a regulatory mechanism would be a poor homeostatic solution to satisfy the changing needs of the body. Effective homeostatic control would require RBC lifespan to be variable and tightly regulated. We suggest that EPO may control RBC lifespan by determining CD47 expression in newly formed RBCs and SIRP-α expression in sinusoidal macrophages. EPO could also regulate the initiation and intensity of anti-RBC autoimmune responses that curtail RBC lifespan in some circumstances. These mechanisms would continuously modulate the rate of RBC destruction depending on oxygen availability. The control of RBC lifespan by EPO and autoimmunity emerges as a key mechanism in the homeostasis of RBCs.
Collapse
Affiliation(s)
- Clemente F Arias
- Centro de Investigaciones Biológicas (CSIC), Madrid, Spain.
- Grupo Interdisciplinar de Sistemas Complejos (GISC), Madrid, Spain.
| | - Nuno Valente-Leal
- Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal
| | | | - Sofia Marques
- Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal
| | - Francisco J Acosta
- Departamento de Ecología, Universidad Complutense de Madrid, Madrid, Spain
| | - Cristina Fernandez-Arias
- Instituto de Medicina Molecular, Universidade de Lisboa, Lisboa, Portugal.
- Departamento de Immunología, Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain.
| |
Collapse
|
2
|
The maternal blood lipidome is indicative of the pathogenesis of severe preeclampsia. J Lipid Res 2021; 62:100118. [PMID: 34547287 PMCID: PMC8503628 DOI: 10.1016/j.jlr.2021.100118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 08/27/2021] [Accepted: 09/13/2021] [Indexed: 11/23/2022] Open
Abstract
Preeclampsia is a pregnancy-specific syndrome characterized by hypertension and proteinuria after 20 weeks of gestation. However, it is not well understood what lipids are involved in the development of this condition, and even less is known how these lipids mediate its formation. To reveal the relationship between lipids and preeclampsia, we conducted lipidomic profiling of maternal sera of 44 severe preeclamptic and 20 healthy pregnant women from a multiethnic cohort in Hawaii. Correlation network analysis showed that oxidized phospholipids have increased intercorrelations and connections in preeclampsia, whereas other lipids, including triacylglycerols, have reduced network correlations and connections. A total of 10 lipid species demonstrate significant changes uniquely associated with preeclampsia but not any other clinical confounders. These species are from the lipid classes of lysophosphatidylcholines, phosphatidylcholines (PCs), cholesteryl esters, phosphatidylethanolamines, lysophosphatidylethanolamines, and ceramides. A random forest classifier built on these lipids shows highly accurate and specific prediction (F1 statistic = 0.94; balanced accuracy = 0.88) of severe preeclampsia, demonstrating their potential as biomarkers for this condition. These lipid species are enriched in dysregulated biological pathways, including insulin signaling, immune response, and phospholipid metabolism. Moreover, causality inference shows that various PCs and lysophosphatidylcholines mediate severe preeclampsia through PC 35:1e. Our results suggest that the lipidome may play a role in the pathogenesis and serve as biomarkers of severe preeclampsia.
Collapse
|
3
|
Gómez-Archila LG, Palomino-Schätzlein M, Zapata-Builes W, Galeano E. Development of an optimized method for processing peripheral blood mononuclear cells for 1H-nuclear magnetic resonance-based metabolomic profiling. PLoS One 2021; 16:e0247668. [PMID: 33630921 PMCID: PMC7906414 DOI: 10.1371/journal.pone.0247668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 02/11/2021] [Indexed: 01/04/2023] Open
Abstract
Human peripheral blood mononuclear cells (PBMCs) are part of the innate and adaptive immune system, and form a critical interface between both systems. Studying the metabolic profile of PBMC could provide valuable information about the response to pathogens, toxins or cancer, the detection of drug toxicity, in drug discovery and cell replacement therapy. The primary purpose of this study was to develop an improved processing method for PBMCs metabolomic profiling with nuclear magnetic resonance (NMR) spectroscopy. To this end, an experimental design was applied to develop an alternative method to process PBMCs at low concentrations. The design included the isolation of PBMCs from the whole blood of four different volunteers, of whom 27 cell samples were processed by two different techniques for quenching and extraction of metabolites: a traditional one using organic solvents and an alternative one employing a high-intensity ultrasound probe, the latter with a variation that includes the use of deproteinizing filters. Finally, all the samples were characterized by 1H-NMR and the metabolomic profiles were compared by the method. As a result, two new methods for PBMCs processing, called Ultrasound Method (UM) and Ultrasound and Ultrafiltration Method (UUM), are described and compared to the Folch Method (FM), which is the standard protocol for extracting metabolites from cell samples. We found that UM and UUM were superior to FM in terms of sensitivity, processing time, spectrum quality, amount of identifiable, quantifiable metabolites and reproducibility.
Collapse
Affiliation(s)
- León Gabriel Gómez-Archila
- Grupo de Investigación en Sustancias Bioactivas, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellín, Colombia
| | | | - Wildeman Zapata-Builes
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia (UdeA), Medellín, Colombia
- Grupo Infettare, Facultad de Medicina, Universidad Cooperativa de Colombia, Medelín, Colombia
| | - Elkin Galeano
- Grupo de Investigación en Sustancias Bioactivas, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellín, Colombia
| |
Collapse
|
4
|
Fibach E. The Redox Balance and Membrane Shedding in RBC Production, Maturation, and Senescence. Front Physiol 2021; 12:604738. [PMID: 33664673 PMCID: PMC7920951 DOI: 10.3389/fphys.2021.604738] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/18/2021] [Indexed: 12/25/2022] Open
Abstract
Membrane shedding in the form of extracellular vesicles plays a key role in normal physiology and pathology. Partial disturbance of the membrane-cytoskeleton linkage and increased in the intracellular Ca content are considered to be mechanisms underlying the process, but it is questionable whether they constitute the primary initiating steps. Homeostasis of the redox system, which depends on the equilibrium between oxidants and antioxidants, is crucial for many cellular processes. Excess oxidative power results in oxidative stress, which affects many cellular components, including the membrane. Accumulating evidence suggests that oxidative stress indirectly affects membrane shedding most probably by affecting the membrane-cytoskeleton and the Ca content. In red blood cells (RBCs), changes in both the redox system and membrane shedding occur throughout their life-from birth-their production in the bone marrow, to death-aging in the peripheral blood and removal by macrophages in sites of the reticuloendothelial system. Both oxidative stress and membrane shedding are disturbed in diseases affecting the RBC, such as the hereditary and acquired hemolytic anemias (i.e., thalassemia, sickle cell anemia, and autoimmune hemolytic anemia). Herein, I review some data-based and hypothetical possibilities that await experimental confirmation regarding some aspects of the interaction between the redox system and membrane shedding and its role in the normal physiology and pathology of RBCs.
Collapse
Affiliation(s)
- Eitan Fibach
- Department of Hematology, Hadassah University Hospital, Jerusalem, Israel
| |
Collapse
|
5
|
Liu J, Zhu L, Zhang F, Dong M, Qu X. Microdeformation of RBCs under oxidative stress measured by digital holographic microscopy and optical tweezers. APPLIED OPTICS 2019; 58:4042-4046. [PMID: 31158157 DOI: 10.1364/ao.58.004042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
This paper utilized digital holographic microscopy and optical tweezers to study microdeformation of red blood cells (RBCs) dynamically under oxidative stress. RBCs attached with microbeads were stretched by dual optical tweezers to generate microdeformation. Morphology of RBCs under manipulation were recorded dynamically and recovered by off-axis digital holographic microscopy method. RBCs treated with H2O2 at different concentrations were measured to investigate the mechanical properties under oxidative stress. Use of optical tweezers and off-axis digital holographic microscopy enhanced measuring accuracy compared with the traditional method. Microdeformation of RBCs is also more consistent with the physiological situation. This proposal is meaningful for clinical applications and basic analysis of Parkinson's disease research.
Collapse
|
6
|
Oxidative Stress in Autistic Children Alters Erythrocyte Shape in the Absence of Quantitative Protein Alterations and of Loss of Membrane Phospholipid Asymmetry. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:6430601. [PMID: 30607218 PMCID: PMC6252219 DOI: 10.1155/2018/6430601] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/20/2018] [Indexed: 12/29/2022]
Abstract
Red blood cells (RBCs) from people affected by autism spectrum disorders (ASDs) are a target of oxidative stress. By scanning electron microscopy, we analyzed RBC morphology from 22 ASD children and show here that only 47.5 ± 3.33% of RBC displayed the typical biconcave shape, as opposed to 87.5 ± 1.3% (mean ± SD) of RBC from 21 sex- and age-matched healthy typically developing (TD) controls. Codocytes and star-shaped cells accounted for about 30% of all abnormally shaped ASD erythrocytes. RBC shape alterations were independent of the anticoagulant used (Na2-EDTA or heparin) and of different handling procedures preceding glutaraldehyde fixation, thus suggesting that they were not artefactual. Incubation for 24 h in the presence of antioxidants restored normal morphology in most erythrocytes from ASD patients. By Coomassie staining, as well as Western blotting analysis of relevant proteins playing a key role in the membrane-cytoskeleton organization, we were unable to find differences in RBC ghost composition between ASD and normal subjects. Phosphatidylserine (PS) exposure towards the extracellular membrane domain was examined in both basal and erythroptosis-inducing conditions. No differences were found between ASD and TD samples except when the aminophospholipid translocase was blocked by N-ethylmaleimide, upon which an increased amount of PS was found to face the outer membrane in RBC from ASD. These complex data are discussed in the light of the current understanding of the mode by which oxidative stress might affect erythrocyte shape in ASD and in other pathological conditions.
Collapse
|
7
|
Hannemann A, Rees DC, Brewin JN, Noe A, Low B, Gibson JS. Oxidative stress and phosphatidylserine exposure in red cells from patients with sickle cell anaemia. Br J Haematol 2018; 182:567-578. [PMID: 29938778 PMCID: PMC6120535 DOI: 10.1111/bjh.15441] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 05/13/2018] [Indexed: 12/14/2022]
Abstract
Phosphatidylserine (PS) exposure increases as red cells age, and is an important signal for the removal of senescent cells from the circulation. PS exposure is elevated in red cells from sickle cell anaemia (SCA) patients and is thought to enhance haemolysis and vaso-occlusion. Although precise conditions leading to its externalisation are unclear, high intracellular Ca2+ has been implicated. Red cells from SCA patients are also exposed to an increased oxidative challenge, and we postulated that this stimulates PS exposure, through increased Ca2+ levels. We tested four different ways of generating oxidative stress: hypoxanthine and xanthine oxidase, phenazine methosulphate, nitrite and tert-butyl hydroperoxide, together with thiol modification with N-ethylmaleimide (NEM), dithiothreitol and hypochlorous acid (HOCl), in red cells permeabilised to Ca2+ using bromo-A23187. Unexpectedly, our findings showed that the four oxidants significantly reduced Ca2+ -induced PS exposure (by 40-60%) with no appreciable effect on Ca2+ affinity. By contrast, NEM markedly increased PS exposure (by about 400%) and slightly but significantly increased the affinity for Ca2+ . Dithiothreitol modestly reduced PS exposure (by 25%) and HOCl had no effect. These findings emphasise the importance of thiol modification for PS exposure in sickle cells but suggest that increased oxidant stress alone is not important.
Collapse
Affiliation(s)
- Anke Hannemann
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
| | - David C. Rees
- Department of Paediatric HaematologyKing's College HospitalKing's College London School of MedicineLondonUK
| | - John N. Brewin
- Department of Paediatric HaematologyKing's College HospitalKing's College London School of MedicineLondonUK
| | - Andreas Noe
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
| | - Ben Low
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
| | - John S. Gibson
- Department of Veterinary MedicineUniversity of CambridgeCambridgeUK
| |
Collapse
|
8
|
Mandaliti W, Nepravishta R, Pica F, Vallebona PS, Garaci E, Paci M. Potential mechanism of thymosin-α1-membrane interactions leading to pleiotropy: experimental evidence and hypotheses. Expert Opin Biol Ther 2018; 18:33-42. [DOI: 10.1080/14712598.2018.1456527] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Walter Mandaliti
- Department of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Rome, Italy
| | - Ridvan Nepravishta
- Department of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Rome, Italy
- School of Pharmacy, East Anglia University, Norwich, UK
| | - Francesca Pica
- Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Rome, Italy
| | | | - Enrico Garaci
- San Raffaele Pisana Scientific Institute for Research, Hospitalization and Health Care, Rome, Italy
| | - Maurizio Paci
- Department of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Rome, Italy
| |
Collapse
|
9
|
du Plessis M, Franken J, Bauer FF. Carnitine Requires Choline to Exert Physiological Effects in Saccharomyces cerevisiae. Front Microbiol 2018; 9:1362. [PMID: 30034373 PMCID: PMC6043790 DOI: 10.3389/fmicb.2018.01362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 06/05/2018] [Indexed: 11/25/2022] Open
Abstract
L-Carnitine is a key metabolite in the energy metabolism of eukaryotic cells, functioning as a shuttling molecule for activated acyl-residues between cellular compartments. In higher eukaryotes this function is essential, and defects in carnitine metabolism has severe effects on fatty acid and carbon metabolism. Carnitine supplementation has been associated with an array of mostly beneficial impacts in higher eukaryotic cells, including stress protection and regulation of redox metabolism in diseased cells. Some of these phenotypes have no obvious link to the carnitine shuttle, and suggest that carnitine has as yet unknown shuttle-independent functions. The existence of shuttle-independent functions has also been suggested in Saccharomyces cerevisiae, including a beneficial effect during hydrogen peroxide stress and a detrimental impact when carnitine is co-supplemented with the reducing agent dithiothreitol (DTT). Here we used these two distinct yeast phenotypes to screen for potential genetic factors that suppress the shuttle independent physiological effects of carnitine. Two deletion strains, Δcho2 and Δopi3, coding for enzymes that catalyze the sequential conversion of phosphatidylethanolamine to phosphatidylcholine were identified for suppressing the phenotypic effects of carnitine. Additional characterisation indicated that the suppression cannot be explained by differences in phospholipid homeostasis. The phenotypes could be reinstated by addition of extracellular choline, but show that the requirement for choline is not based on some overlapping function or the structural similarities of the two molecules. This is the first study to suggest a molecular link between a specific metabolite and carnitine-dependent, but shuttle-independent phenotypes in eukaryotes.
Collapse
Affiliation(s)
| | | | - Florian F. Bauer
- Department of Viticulture and Oenology, Institute for Wine Biotechnology, Stellenbosch University, Stellenbosch, South Africa
| |
Collapse
|
10
|
Chutvanichkul B, Vattanaviboon P, Mas-Oodi S, U-Pratya Y, Wanachiwanawin W. Labile iron pool as a parameter to monitor iron overload and oxidative stress status in β-thalassemic erythrocytes. CYTOMETRY PART B-CLINICAL CYTOMETRY 2018; 94:631-636. [PMID: 29486524 DOI: 10.1002/cyto.b.21633] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 02/16/2018] [Accepted: 02/23/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND Labile iron pool (LIP) is intracellular nonprotein bound iron that can generate oxygen radicals via the Fenton reaction resulting in oxidative cell damage. Therefore, quantitative measurement of LIP will be helpful for detecting and monitoring the toxic iron status in iron overloaded patients. This study demonstrated LIP level and its correlation to oxidative stress status in β-thalassemic erythrocytes. METHODS LIP and reactive oxygen species (ROS) level, numbers of erythrocyte vesicles and apoptosis were assayed by flow cytometric methods in 30 blood samples from β-thalassemia/hemoglobin E patients and 17 blood samples from healthy volunteers with normal hemoglobin type. RESULTS β-thalassemic erythrocytes showed higher LIP level, defined as the difference in calcein fluorescent intensity of the cells treated with or without deferiprone, than normal erythrocytes (mean ± 2SD as 62.39 ± 39.58 versus 44.65 ± 35.86, P = 0.003). The LIP level above 67, a cutoff value of LIP level obtained from receiver operating characteristic curve analysis, had a significant positive correlation with oxidative stress status for ROS level (r = 0.90, P < 0.001) and also the amount of erythrocyte vesicles (r = 0.79, P = 0.002). In contrast, the LIP level showed a significant negative correlation with the patients' hemoglobin level (r = -0.66, P = 0.028). CONCLUSIONS The LIP assay is suggested as an alternative test to monitor the magnitude of iron overload and its consequent oxidative stress in β-thalassemia. LIP level may also be used as a marker for therapeutic response to iron chelation treatment. © 2018 International Clinical Cytometry Society.
Collapse
Affiliation(s)
- Boonyanuch Chutvanichkul
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand.,Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hosipital, Mahidol University, Bangkok, 10700, Thailand
| | - Phantip Vattanaviboon
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand
| | - Sumana Mas-Oodi
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Bangkok, 10700, Thailand
| | - Yaowalak U-Pratya
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hosipital, Mahidol University, Bangkok, 10700, Thailand
| | - Wanchai Wanachiwanawin
- Division of Hematology, Department of Medicine, Faculty of Medicine Siriraj Hosipital, Mahidol University, Bangkok, 10700, Thailand
| |
Collapse
|
11
|
Palomino-Schätzlein M, García H, Gutiérrez-Carcedo P, Pineda-Lucena A, Herance JR. Assessment of gold nanoparticles on human peripheral blood cells by metabolic profiling with 1H-NMR spectroscopy, a novel translational approach on a patient-specific basis. PLoS One 2017; 12:e0182985. [PMID: 28793337 PMCID: PMC5549967 DOI: 10.1371/journal.pone.0182985] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/27/2017] [Indexed: 01/03/2023] Open
Abstract
Human peripheral blood cells are relevant ex vivo models for characterizing diseases and evaluating the pharmacological effects of therapeutic interventions, as they provide a close reflection of an individual pathophysiological state. In this work, a new approach to evaluate the impact of nanoparticles on the three main fractions of human peripheral blood cells by nuclear magnetic resonance spectroscopy is shown. Thus, a comprehensive protocol has been set-up including the separation of blood cells, their in vitro treatment with nanoparticles and the extraction and characterization of metabolites by nuclear magnetic resonance. This method was applied to assess the effect of gold nanoparticles, either coated with chitosan or supported on ceria, on peripheral blood cells from healthy individuals. A clear antioxidant effect was observed for chitosan-coated gold nanoparticles by a significant increase in reduced glutathione, that was much less pronounced for gold-cerium nanoparticles. In addition, the analysis revealed significant alterations of several other pathways, which were stronger for gold-cerium nanoparticles. These results are in accordance with the toxicological data previously reported for these materials, confirming the value of the current methodology.
Collapse
Affiliation(s)
| | | | - Patricia Gutiérrez-Carcedo
- Grup de Recerca en Imatge Mèdica Molecular, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Antonio Pineda-Lucena
- Laboratorio de Bioquímica Estructural, Centro de Investigación Príncipe Felipe, Valencia, Spain
- Unidad de Descubrimiento de Fármacos, Instituto de Investigación Sanitaria La Fe, Hospital Universitario i Politécnico La Fe, Valencia, Spain
| | - José Raul Herance
- Grup de Recerca en Imatge Mèdica Molecular, Vall d’Hebron Research Institute, CIBBIM-Nanomedicine, Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| |
Collapse
|
12
|
Normalized levels of red blood cells expressing phosphatidylserine, their microparticles, and activated platelets in young patients with β-thalassemia following bone marrow transplantation. Ann Hematol 2017; 96:1741-1747. [DOI: 10.1007/s00277-017-3070-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 07/09/2017] [Indexed: 11/29/2022]
|
13
|
Arias CF, Arias CF. How do red blood cells know when to die? ROYAL SOCIETY OPEN SCIENCE 2017; 4:160850. [PMID: 28484605 PMCID: PMC5414242 DOI: 10.1098/rsos.160850] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/01/2017] [Indexed: 05/19/2023]
Abstract
Human red blood cells (RBCs) are normally phagocytized by macrophages of splenic and hepatic sinusoids at 120 days of age. The destruction of RBCs is ultimately controlled by antagonist effects of phosphatidylserine (PS) and CD47 on the phagocytic activity of macrophages. In this work, we introduce a conceptual model that explains RBC lifespan as a consequence of the dynamics of these molecules. Specifically, we suggest that PS and CD47 define a molecular algorithm that sets the timing of RBC phagocytosis. We show that significant changes in RBC lifespan described in the literature can be explained as alternative outcomes of this algorithm when it is executed in different conditions of oxygen availability. The theoretical model introduced here provides a unified framework to understand a variety of empirical observations regarding RBC biology. It also highlights the role of RBC lifespan as a key element of RBC homeostasis.
Collapse
Affiliation(s)
- Clemente Fernandez Arias
- Departamento de Matemática Aplicada, Universidad Complutense de Madrid, Spain
- Grupo Interdisciplinar de Sistemas Complejos, Madrid, Spain
| | - Cristina Fernandez Arias
- HIV and Malaria Vaccine Program, Aaron Diamond AIDS Research Center, Affiliate of The Rockefeller University, New York, NY, USA
| |
Collapse
|
14
|
Zafeiridis A, Chatziioannou AC, Sarivasiliou H, Kyparos A, Nikolaidis MG, Vrabas IS, Pechlivanis A, Zoumpoulakis P, Baskakis C, Dipla K, Theodoridis GA. Global Metabolic Stress of Isoeffort Continuous and High Intensity Interval Aerobic Exercise: A Comparative 1H NMR Metabonomic Study. J Proteome Res 2016; 15:4452-4463. [DOI: 10.1021/acs.jproteome.6b00545] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Andreas Zafeiridis
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | | | - Haralambos Sarivasiliou
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | - Antonios Kyparos
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | - Michalis G. Nikolaidis
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | - Ioannis S. Vrabas
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | - Alexandros Pechlivanis
- Biomolecular
Medicine, Division of Computational and Systems Medicine, Department
of Surgery and Cancer, Faculty of Medicine, Imperial College London, SW7 2AZ London, United Kingdom
| | - Panagiotis Zoumpoulakis
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens, 11635 Greece
| | - Constantinos Baskakis
- Institute of Biology, Medicinal Chemistry & Biotechnology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens, 11635 Greece
| | - Konstantina Dipla
- Exercise
Physiology and Biochemistry Laboratory, Department of Physical Education
and Sport Sciences at Serres, Aristotle University of Thessaloniki, Serres 62121, Greece
| | | |
Collapse
|
15
|
Teixeira JH, Silva AM, Almeida MI, Barbosa MA, Santos SG. Circulating extracellular vesicles: Their role in tissue repair and regeneration. Transfus Apher Sci 2016; 55:53-61. [DOI: 10.1016/j.transci.2016.07.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
16
|
PAPPIANI C, DAMASCENO NRT. Impacto da suplementação com ácidos graxos ômega-3 nas subfrações da lipoproteína de alta densidade de indivíduos tabagistas. REV NUTR 2016. [DOI: 10.1590/1678-98652016000400006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO Objetivo Avaliar o efeito da suplementação com ômega-3 nas subfrações das lipoproteínas de alta densidade em indivíduos tabagistas. Métodos Ensaio clínico, randomizado, duplo-cego. Foi selecionada uma amostra com 33 tabagistas, de ambos os sexos, com idade entre 30 e 60 anos, suplementados com ômega-3 (n=17) ou placebo (ácidos graxos ômega-6, n=16) por dois meses. As subfrações das lipoproteínas de alta densidade foram analisadas pelo sistema Lipoprint. Os testes estatísticos foram realizados com o auxílio do programa Statistical Package for the Social Sciences, versão 20.0. Resultados A média de idade foi 49 anos, com predominância da raça branca. Após a intervenção, o grupo ômega-3 modificou positivamente o perfil lipídico e as subfrações das lipoproteínas de alta densidade dos tabagistas. Nos modelos de regressão linear testados, o percentual de ácido docosahexaenoico plasmático apresentou associações negativas com o percentual das lipoproteínas de alta densidade-pequena. Conclusão A suplementação com ômega-3 está associada a uma alteração favorável na distribuição das subfrações das lipoproteínas de alta densidade, aumentando as lipoproteínas de alta densidade-grande e diminuindo as lipoproteínas de alta densidade-pequena. Isso reforça a importância do ômega-3 na saúde cardiovascular de indivíduos tabagistas.
Collapse
|
17
|
Nepravishta R, Mandaliti W, Vallebona PS, Pica F, Garaci E, Paci M. Mechanism of Action of Thymosinα1: Does It Interact with Membrane by Recognition of Exposed Phosphatidylserine on Cell Surface? A Structural Approach. VITAMINS AND HORMONES 2016; 102:101-19. [PMID: 27450732 DOI: 10.1016/bs.vh.2016.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thymosinα1 is a peptidic hormone with pleiotropic activity, which is used in the therapy of several diseases. It is unstructured in water solution and interacts with negative regions of micelles and vesicles assuming two tracts of helical conformation with a structural flexible break in between. The studies of the interaction of Thymosinα1 with micelles of mixed dipalmitoylphosphatidylcholine and sodium dodecylsulfate and vesicles with mixed dipalmitoylphosphatidylcholine/dipalmitoylphosphatidylserine, the latter the negative component of the membranes, by (1)H and natural abundance (15)N NMR are herewith reported, reviewed, and discussed. The results indicate that the preferred interactions are those where the surface is negatively charged due to sodium dodecylsulfate or due to the presence of dipalmitoylphosphatidylserine exposed on the surface. In fact the unbalance of dipalmitoylphosphatidylserine on the cellular surface is an important phenomenon present in pathological conditions of cells. Moreover, the direct interaction of Thymosinα1 with K562 cells presenting an overexposure of phosphatidylserine as a consequence of resveratrol-induced apoptosis was carried out.
Collapse
Affiliation(s)
- R Nepravishta
- University of Rome "Tor Vergata", Rome, Italy; Faculty of Pharmacy Catholic University "Our Lady of Good Counsel", Tirane, Albania
| | - W Mandaliti
- University of Rome "Tor Vergata", Rome, Italy
| | | | - F Pica
- University of Rome "Tor Vergata", Rome, Italy
| | - E Garaci
- University of Rome "Tor Vergata", Rome, Italy; San Raffaele Pisana Scientific Institute for Research, Hospitalization and Health Care, Rome, Italy
| | - M Paci
- University of Rome "Tor Vergata", Rome, Italy.
| |
Collapse
|
18
|
Mandaliti W, Nepravishta R, Sinibaldi Vallebona P, Pica F, Garaci E, Paci M. Thymosin α1 Interacts with Exposed Phosphatidylserine in Membrane Models and in Cells and Uses Serum Albumin as a Carrier. Biochemistry 2016; 55:1462-72. [DOI: 10.1021/acs.biochem.5b01345] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Walter Mandaliti
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Ridvan Nepravishta
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy
- Department
of Chemical Pharmaceutical and Biomolecular Technologies, Faculty of Pharmacy Catholic University “Our Lady of Good Counsel”, Rr. D.
Hoxha, Tirane, Albania
| | - Paola Sinibaldi Vallebona
- Department
of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Francesca Pica
- Department
of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
| | - Enrico Garaci
- Department
of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier 1, 00133 Rome, Italy
- San
Raffaele Pisana Scientific Institute for Research, Hospitalization and Health Care, 00163 Rome, Italy
| | - Maurizio Paci
- Department
of Chemical Sciences and Technologies, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| |
Collapse
|
19
|
Mok HJ, Shin H, Lee JW, Lee GK, Suh CS, Kim KP, Lim HJ. Age-Associated Lipidome Changes in Metaphase II Mouse Oocytes. PLoS One 2016; 11:e0148577. [PMID: 26881843 PMCID: PMC4755615 DOI: 10.1371/journal.pone.0148577] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/19/2016] [Indexed: 11/18/2022] Open
Abstract
The quality of mammalian oocytes declines with age, which negatively affects fertilization and developmental potential. The aging process often accompanies damages to macromolecules such as proteins, DNA, and lipids. To investigate if aged oocytes display an altered lipidome compared to young oocytes, we performed a global lipidomic analysis between oocytes from 4-week-old and 42 to 50-week-old mice. Increased oxidative stress is often considered as one of the main causes of cellular aging. Thus, we set up a group of 4-week-old oocytes treated with hydrogen peroxide (H2O2), a commonly used oxidative stressor, to compare if similar lipid species are altered between aged and oxidative-stressed oocytes. Between young and aged oocytes, we identified 26 decreased and 6 increased lipids in aged oocytes; and between young and H2O2-treated oocytes, we identified 35 decreased and 26 increased lipids in H2O2-treated oocytes. The decreased lipid species in these two comparisons were overlapped, whereas the increased lipid species were distinct. Multiple phospholipid classes, phosphatidic acid (PA), phosphatidylinositol (PI), phosphatidylserine (PS), and lysophosphatidylserine (LPS) significantly decreased both in H2O2-treated and aged oocytes, suggesting that the integrity of plasma membrane is similarly affected under these conditions. In contrast, a dramatic increase in diacylglycerol (DG) was only noted in H2O2-treated oocytes, indicating that the acute effect of H2O2-caused oxidative stress is distinct from aging-associated lipidome alteration. In H2O2-treated oocytes, the expression of lysophosphatidylcholine acyltransferase 1 increased along with increases in phosphatidylcholine. Overall, our data reveal that several classes of phospholipids are affected in aged oocytes, suggesting that the integrity of plasma membrane is associated with maintaining fertilization and developmental potential of mouse oocytes.
Collapse
Affiliation(s)
- Hyuck Jun Mok
- Department of Applied Chemistry, The Institute of Natural Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
| | - Hyejin Shin
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
| | - Jae Won Lee
- Department of Applied Chemistry, The Institute of Natural Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
| | - Geun-Kyung Lee
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi-do, Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, The Institute of Natural Science, Kyung Hee University, Yongin, Gyeonggi-do, Korea
- * E-mail: (PKP); (HJL)
| | - Hyunjung Jade Lim
- Department of Biomedical Science & Technology, Institute of Biomedical Science & Technology, Konkuk University, Seoul, Korea
- Department of Veterinary Medicine, Konkuk University, Seoul, Korea
- * E-mail: (PKP); (HJL)
| |
Collapse
|
20
|
The Deleterious Effects of Oxidative and Nitrosative Stress on Palmitoylation, Membrane Lipid Rafts and Lipid-Based Cellular Signalling: New Drug Targets in Neuroimmune Disorders. Mol Neurobiol 2015; 53:4638-58. [PMID: 26310971 DOI: 10.1007/s12035-015-9392-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 08/11/2015] [Indexed: 12/18/2022]
Abstract
Oxidative and nitrosative stress (O&NS) is causatively implicated in the pathogenesis of Alzheimer's and Parkinson's disease, multiple sclerosis, chronic fatigue syndrome, schizophrenia and depression. Many of the consequences stemming from O&NS, including damage to proteins, lipids and DNA, are well known, whereas the effects of O&NS on lipoprotein-based cellular signalling involving palmitoylation and plasma membrane lipid rafts are less well documented. The aim of this narrative review is to discuss the mechanisms involved in lipid-based signalling, including palmitoylation, membrane/lipid raft (MLR) and n-3 polyunsaturated fatty acid (PUFA) functions, the effects of O&NS processes on these processes and their role in the abovementioned diseases. S-palmitoylation is a post-translational modification, which regulates protein trafficking and association with the plasma membrane, protein subcellular location and functions. Palmitoylation and MRLs play a key role in neuronal functions, including glutamatergic neurotransmission, and immune-inflammatory responses. Palmitoylation, MLRs and n-3 PUFAs are vulnerable to the corruptive effects of O&NS. Chronic O&NS inhibits palmitoylation and causes profound changes in lipid membrane composition, e.g. n-3 PUFA depletion, increased membrane permeability and reduced fluidity, which together lead to disorders in intracellular signal transduction, receptor dysfunction and increased neurotoxicity. Disruption of lipid-based signalling is a source of the neuroimmune disorders involved in the pathophysiology of the abovementioned diseases. n-3 PUFA supplementation is a rational therapeutic approach targeting disruptions in lipid-based signalling.
Collapse
|
21
|
Ondei LDS, Estevão IDF, Rocha MIP, Percário S, Souza DRS, Pinhel MADS, Bonini-Domingos CR. Oxidative stress and antioxidant status in beta-thalassemia heterozygotes. Rev Bras Hematol Hemoter 2014; 35:409-13. [PMID: 24478607 PMCID: PMC3905823 DOI: 10.5581/1516-8484.20130122] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 07/15/2013] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Several studies have evaluated the oxidant and antioxidant status of thalassemia patients but most focused mainly on the severe and intermediate states of the disease. Moreover, the oxidative status has not been evaluated for the different beta-thalassemia mutations. OBJECTIVE To evaluate lipid peroxidation and Trolox equivalent antioxidant capacity in relation to serum iron and ferritin in beta thalassemia resulting from two different mutations (CD39 and IVS-I-110) compared to individuals without beta-thalassemia. METHODS One hundred and thirty subjects were studied, including 49 who were heterozygous for beta-thalassemia and 81 controls. Blood samples were subjected to screening tests for hemoglobin. Allele-specific polymerase chain reaction was used to confirm mutations for beta-thalassemia, an analysis of thiobarbituric acid reactive species was used to determine lipid peroxidation, and Trolox equivalent antioxidant capacity evaluations were performed. The heterozygous beta-thalassemia group was also evaluated for serum iron and ferritin status. RESULTS Thiobarbituric acid reactive species (486.24 ± 119.64 ng/mL) and Trolox equivalent antioxidant capacity values (2.23 ± 0.11 mM/L) were higher in beta-thalassemia heterozygotes compared to controls (260.86 ± 92.40 ng/mL and 2.12 ± 0.10 mM/L, respectively; p-value < 0.01). Increased thiobarbituric acid reactive species values were observed in subjects with the CD39 mutation compared with those with the IVS-I-110 mutation (529.94 ± 115.60 ng/mL and 453.39 ± 121.10 ng/mL, respectively; p-value = 0.04). However, average Trolox equivalent antioxidant capacity values were similar for both mutations (2.20 ± 0.08 mM/L and 2.23 ± 0.12 mM/L, respectively; p-value = 0.39). There was no influence of serum iron and ferritin levels on thiobarbituric acid reactive species and Trolox equivalent antioxidant capacity values. CONCLUSION This study shows an increase of oxidative stress and antioxidant capacity in beta-thalassemia heterozygotes, mainly in carriers of the CD39 mutation.
Collapse
Affiliation(s)
| | | | | | | | - Dorotéia Rossi Silva Souza
- Fundação Faculdade Regional de Medicina de São José do Rio Preto - FUNFARME, São José do Rio Preto, SP, Brazil
| | | | | |
Collapse
|
22
|
Venkataraman K, Khurana S, Tai TC. Oxidative stress in aging--matters of the heart and mind. Int J Mol Sci 2013; 14:17897-925. [PMID: 24002027 PMCID: PMC3794759 DOI: 10.3390/ijms140917897] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 08/10/2013] [Accepted: 08/15/2013] [Indexed: 01/15/2023] Open
Abstract
Oxidative damage is considered to be the primary cause of several aging associated disease pathologies. Cumulative oxidative damage tends to be pervasive among cellular macromolecules, impacting proteins, lipids, RNA and DNA of cells. At a systemic level, events subsequent to oxidative damage induce an inflammatory response to sites of oxidative damage, often contributing to additional oxidative stress. At a cellular level, oxidative damage to mitochondria results in acidification of the cytoplasm and release of cytochrome c, causing apoptosis. This review summarizes findings in the literature on oxidative stress and consequent damage on cells and tissues of the cardiovascular system and the central nervous system, with a focus on aging-related diseases that have well-documented evidence of oxidative damage in initiation and/or progression of the disease. The current understanding of the cellular mechanisms with a focus on macromolecular damage, impacted cellular pathways and gross morphological changes associated with oxidative damage is also reviewed. Additionally, the impact of calorific restriction with its profound impact on cardiovascular and neuronal aging is addressed.
Collapse
Affiliation(s)
- Krishnan Venkataraman
- Department of Gerontology, Huntington University, Sudbury, ON P3E 2C6, Canada; E-Mail:
| | - Sandhya Khurana
- Medical Sciences Division, Northern Ontario School of Medicine, Sudbury, ON P3E 2C6, Canada; E-Mail:
| | - T. C. Tai
- Medical Sciences Division, Northern Ontario School of Medicine, Sudbury, ON P3E 2C6, Canada; E-Mail:
- Department of Biology, Department of Chemistry and Biochemistry, Biomolecular Sciences Program, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-705-662-7239; Fax: +1-705-675-4858
| |
Collapse
|
23
|
Perturbations in blood phosphatidylcholine and sphingomyelin Fatty Acid composition in a sample population of cigarette smokers. Indian J Clin Biochem 2013; 28:361-7. [PMID: 24426238 DOI: 10.1007/s12291-013-0327-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 11/03/2012] [Indexed: 02/07/2023]
Abstract
Docosahexaenoic (DHA) and arachidonic acids (AA) are polyunsaturated fatty acids (PUFAs), major components of brain tissue and neural systems, and the precursors of a number of biologically active metabolites with functions in inflammation resolution, neuroprotection and other actions. As PUFAs are highly susceptible to peroxidation, we hypothesised whether cigarette smokers would present altered PUFAs levels in plasma and erythrocyte phospholipids. Adult males from Indian, Sri-Lankan or Bangladeshi genetic backgrounds who reported smoking between 20 and 60 cigarettes per week were recruited. The control group consisted of matched non-smokers. A blood sample was taken, plasma and erythrocyte total lipids were extracted, phospholipids were separated by thin layer chromatography, and the fatty acid content analysed by gas chromatography. In smokers, dihomo-gamma-linolenic acid, the AA precursor, was significantly reduced in plasma and erythrocyte phosphatidylcholine. AA and DHA were significantly reduced in erythrocyte sphingomyelin. Relatively short term smoking has affected the fatty acid composition of plasma and erythrocyte phospholipids with functions in neural tissue composition, cell signalling, cell growth, intracellular trafficking, neuroprotection and inflammation, in a relatively young population. As lipid peroxidation is pivotal in the pathogenesis of atherosclerosis and neurodegenerative diseases such as Alzheimer disease, early effects of smoking may be relevant for the development of such conditions.
Collapse
|
24
|
Raval JS, Fontes J, Banerjee U, Yazer MH, Mank E, Palmer AF. Ascorbic acid improves membrane fragility and decreases haemolysis during red blood cell storage. Transfus Med 2013; 23:87-93. [PMID: 23406333 DOI: 10.1111/tme.12013] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 12/15/2012] [Accepted: 01/12/2013] [Indexed: 01/29/2023]
Abstract
BACKGROUND Changes that occur to red blood cells (RBCs) during routine blood bank storage include decreased deformability, increased haemolysis and oxidative damage. Oxidative injury to the RBC membrane and haemoglobin can affect changes in shape and deformability. Ascorbic acid (AA) is an antioxidant that maintains haemoglobin in a reduced state and minimises RBC oxidative injury. We hypothesised that AA would improve membrane fragility and decrease haemolysis during storage. METHODS Whole blood derived, AS-5 preserved, pre-storage leucoreduced RBC units were exposed to either AA or saline control solutions. Several rheological and biochemical parameters were measured serially during storage, including RBC membrane mechanical fragility, percent haemolysis and methaemoglobin levels. RESULTS AA exposure significantly reduced mechanical fragility and haemolysis over the entire storage period. The highest two concentrations of AA affected the greatest reductions in mechanical fragility and percent haemolysis. Addition of AA to the RBCs did not significantly alter their biochemical parameters compared to control RBCs incubated with saline. CONCLUSION AA reduced RBC membrane fragility and decreased haemolysis during storage without adversely affecting other RBC biochemical parameters. The clinical significance of these findings needs to be determined.
Collapse
Affiliation(s)
- J S Raval
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | | | | | | | | | | |
Collapse
|
25
|
Freikman I, Ringel I, Fibach E. Shedding of phosphatidylserine from developing erythroid cells involves microtubule depolymerization and affects membrane lipid composition. J Membr Biol 2012; 245:779-87. [PMID: 22825717 DOI: 10.1007/s00232-012-9478-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 06/30/2012] [Indexed: 12/01/2022]
Abstract
Phosphatidylserine (PS), which is normally localized in the cytoplasmic leaflet of the membrane, flip-flops to the external leaflet during aging of, or trauma to, cells. A fraction of this PS undergoes shedding into the extracellular milieu. PS externalization and shedding change during maturation of erythroid cells and affect the functioning, senescence and elimination of mature RBCs. Several lines of evidence suggest dependence of PS shedding on intracellular Ca concentration as well as on interaction between plasma membrane phospholipids and microtubules (MTs), the key components of the cytoskeleton. We investigated the effect of Ca flux and MT assembly on the distribution of PS across, and shedding from, the membranes of erythroid precursors. Cultured human and murine erythroid precursors were treated with the Ca ionophore A23187, the MT assembly enhancer paclitaxel (Taxol) or the inhibitor colchicine. PS externalization and shedding were measured by flow cytometry and the cholesterol/phospholipids in RBC membranes and supernatants, by ¹H-NMR. We found that treatment with Taxol or colchicine resulted in a marked increase in PS externalization, while shedding was increased by colchicine but inhibited by Taxol. These results indicate that PS externalization is mediated by Ca flux, and PS shedding by both Ca flux and MT assembly. The cholesterol/phospholipid ratio in the membrane is modified by PS shedding; we now show that it was increased by colchicine and A23187, while taxol had no effect. In summary, the results indicate that the Ca flux and MT depolymerization of erythroid precursors mediate their PS externalization and shedding, which in turn changes their membrane composition.
Collapse
Affiliation(s)
- Inna Freikman
- Institute of Drug Research, School of Pharmacy, Hebrew University of Jerusalem, 91120 Jerusalem, Israel
| | | | | |
Collapse
|
26
|
Abstract
Observational and experimental studies continue to support the association of infection and infection-stimulated inflammation with development of cardiovascular disease (CVD) including atherosclerosis and thrombosis. Microvesicles (MV) are heterogeneous populations of sealed membrane-derived vesicles shed into circulation by activated mammalian cells and/or pathogenic microbes that may represent an interface between bacterial/microbial infection and increased risk of CVD. This review evaluates how MV act to modulate and intersect immunological and inflammatory responses to infection with particular attention to progression of CVD. Although infection-related stimuli provoke release of MV from blood and vascular cells, MV express phosphatidylserine and other procoagulant factors on their surface, which initiate and amplify blood coagulation. In addition, MV mediate cell-cell adhesion, which may stimulate production of pro-inflammatory cytokines in vascular cells, which in turn aggravate progression of CVD and propagate atherothrombosis. MV transfer membrane receptors, RNA and proteins among cells, and present auto-antigens from their cells of origin to proximal or remote target cells. Because MV harbor cell surface proteins and contain cytoplasmic components of the parent cell, they mediate biological messages and play a pivotal role in the crossroad between infection-stimulated inflammation and CVDs.
Collapse
|
27
|
Thalassemic DNA-Containing Red Blood Cells Are under Oxidative Stress. Anemia 2012; 2012:943974. [PMID: 22496973 PMCID: PMC3310241 DOI: 10.1155/2012/943974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/01/2011] [Accepted: 12/04/2011] [Indexed: 01/01/2023] Open
Abstract
We studied the nature of enucleated RBCs containing DNA remnants, Howell-Jolly (HJ) RBCs and reticulocytes (retics), that are characteristically present in the circulation of thalassemic patients, especially after splenectomy. Using flow cytometry methodology, we measured oxidative status parameters of these cells in patients with β-thalassemia. In each patient studied, these cells had higher content of reactive oxygen species and exposed phosphatidylserine compared with their DNA-free counterparts. These results suggest that oxidative stress in thalassemic developing erythroid precursors might, through DNA-breakage, generate HJ-retics and HJ-RBCs and that oxidative stress-induced externalization of phosphatidylserine is involved in the removal of these cells from the circulation by the spleen, a mechanism similar to that of the removal of senescent RBCs.
Collapse
|
28
|
Gottlieb Y, Topaz O, Cohen LA, Yakov LD, Haber T, Morgenstern A, Weiss A, Chait Berman K, Fibach E, Meyron-Holtz EG. Physiologically aged red blood cells undergo erythrophagocytosis in vivo but not in vitro. Haematologica 2012; 97:994-1002. [PMID: 22331264 DOI: 10.3324/haematol.2011.057620] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The lifespan of red blood cells is terminated when macrophages remove senescent red blood cells by erythrophagocytosis. This puts macrophages at the center of systemic iron recycling in addition to their functions in tissue remodeling and innate immunity. Thus far, erythrophagocytosis has been studied by evaluating phagocytosis of erythrocytes that were damaged to mimic senescence. These studies have demonstrated that acquisition of some specific individual senescence markers can trigger erythrophagocytosis by macrophages, but we hypothesized that the mechanism of erythrophagocytosis of such damaged erythrocytes might differ from erythrophagocytosis of physiologically aged erythrocytes. DESIGN AND METHODS To test this hypothesis we generated an erythrocyte population highly enriched in senescent erythrocytes by a hypertransfusion procedure in mice. Various erythrocyte-aging signals were analyzed and erythrophagocytosis was evaluated in vivo and in vitro. RESULTS The large cohort of senescent erythrocytes from hypertransfused mice carried numerous aging signals identical to those of senescent erythrocytes from control mice. Phagocytosis of fluorescently-labeled erythrocytes from hypertransfused mice injected into untreated mice was much higher than phagocytosis of labeled erythrocytes from control mice. However, neither erythrocytes from hypertransfused mice, nor those from control mice were phagocytosed in vitro by primary macrophage cultures, even though these cultures were able to phagocytose oxidatively damaged erythrocytes. CONCLUSIONS The large senescent erythrocyte population found in hypertransfused mice mimics physiologically aged erythrocytes. For effective erythrophagocytosis of these senescent erythrocytes, macrophages depend on some features of the intact phagocytosing tissue for support.
Collapse
Affiliation(s)
- Yehonatan Gottlieb
- Laboratory for Molecular Nutrition, Faculty of Biotechnology and Food Engineering. Technion. Technion City, Haifa, Israel
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Rautou PE, Vion AC, Amabile N, Chironi G, Simon A, Tedgui A, Boulanger CM. Microparticles, Vascular Function, and Atherothrombosis. Circ Res 2011; 109:593-606. [DOI: 10.1161/circresaha.110.233163] [Citation(s) in RCA: 291] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Membrane-shed submicron microparticles (MPs) are released after cell activation or apoptosis. High levels of MPs circulate in the blood of patients with atherothrombotic diseases, where they could serve as a useful biomarker of vascular injury and a potential predictor of cardiovascular mortality and major adverse cardiovascular events. Atherosclerotic lesions also accumulate large numbers of MPs of leukocyte, smooth muscle cell, endothelial, and erythrocyte origin. A large body of evidence supports the role of MPs at different steps of atherosclerosis development, progression, and complications. Circulating MPs impair the atheroprotective function of the vascular endothelium, at least partly, by decreased nitric oxide synthesis. Plaque MPs favor local inflammation by augmenting the expression of adhesion molecule, such as intercellular adhesion molecule -1 at the surface of endothelial cell, and monocyte recruitment within the lesion. In addition, plaque MPs stimulate angiogenesis, a key event in the transition from stable to unstable lesions. MPs also may promote local cell apoptosis, leading to the release and accumulation of new MPs, and thus creating a vicious circle. Furthermore, highly thrombogenic plaque MPs could increase thrombus formation at the time of rupture, together with circulating MPs released in this context by activated platelets and leukocytes. Finally, MPs also could participate in repairing the consequences of arterial occlusion and tissue ischemia by promoting postischemic neovascularization.
Collapse
Affiliation(s)
- Pierre-Emmanuel Rautou
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Anne-Clémence Vion
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Nicolas Amabile
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Gilles Chironi
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Alain Simon
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Alain Tedgui
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Chantal M. Boulanger
- From the INSERM (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), U970, Paris Cardiovascular Research Center PARCC, Paris, France; Université Paris Descartes, Sorbonne Paris Cité (P.E.R., A.C.V., N.A., G.C., A.S., A.T., C.M.B.), UMR-S970, Paris, France; Service de Cardiologie (N.A.), Centre Chirurgical Marie Lannelongue, Le Plessis-Robinson, France; Centre de Médecine Préventive Cardiovasculaire (G.C., A.S.), AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| |
Collapse
|
30
|
Freikman I, Fibach E. Distribution and shedding of the membrane phosphatidylserine during maturation and aging of erythroid cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2773-80. [PMID: 21871434 DOI: 10.1016/j.bbamem.2011.08.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 08/08/2011] [Accepted: 08/09/2011] [Indexed: 10/17/2022]
Abstract
Maturation and aging of erythroid cells are accompanied by extensive remodeling of the membrane and a marked decrease in cell size, processes that are mediated by externalization and shedding of phosphatidylserine (PS). In the present study, we investigated the redistribution of PS in the plasma membrane of erythroid precursors during their maturation and of mature RBCs during senescence, and the involvement of changes in calcium (Ca)-flux in these processes. Maturation was studied by analyzing normal human bone marrow cells as well as cultured human normal erythroid precursors induced by erythropoietin and murine erythroleukemia cells induced by hexamethylene-bisacetamide. Senescence was studied in normal human peripheral RBCs following density fractionation. PS and Ca were determined by flow cytometry using annexin-V and Flu-3, respectively. The outer, inner and shed PS were quantified by a novel two-step binding inhibitory assay. The results indicate a bi-phasic modulation of intracellular Ca and PS externalization/shedding; both of which decreased during maturation and increased during aging. The role of intracellular Ca in PS externalization/shedding was demonstrated by modulating intracellular Ca: Ca was decreased by incubating the cells with an ion chelator (EDTA) or with decreasing concentrations of Ca, whereas treatment with the ionophore A23187 elevated intracellular Ca. The results showed that low Ca resulted in decreased outer and shed PS, whereas high Ca had the opposite effect. The results suggest that PS externalization and shedding are mediated by increased cellular Ca-flux, and that they play an important role in erythroid maturation and RBC senescence.
Collapse
Affiliation(s)
- Inna Freikman
- Institute of Drug Research, School of Pharmacy, Department of Hematology, Hadassah-Hebrew University Medical Center, Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | | |
Collapse
|
31
|
Freikman I, Ringel I, Fibach E. Oxidative Stress-Induced Membrane Shedding from RBCs is Ca Flux-Mediated and Affects Membrane Lipid Composition. J Membr Biol 2011; 240:73-82. [DOI: 10.1007/s00232-011-9345-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Accepted: 01/04/2011] [Indexed: 11/30/2022]
|
32
|
Fibach E, Rachmilewitz EA. The role of antioxidants and iron chelators in the treatment of oxidative stress in thalassemia. Ann N Y Acad Sci 2010; 1202:10-6. [PMID: 20712766 DOI: 10.1111/j.1749-6632.2010.05577.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
On the basis of all the presented data, one can conclude that oxidative stress plays a major role in the pathophysiology of thalassemia and other congenital and acquired hemolytic anemias. Free extracellular (labile plasma iron, LPI) and intracellular (labile iron pool, LIP) iron species that have been identified in thalassemic blood cells are responsible for generation of oxidative stress by catalyzing formation of oxygen radicals over the antioxidant capacity of the cell. Consequently, there is a rationale for iron chelation to eliminate the free-iron species, which in this respect, act like antioxidants. In addition, antioxidants such as vitamin E and polyphenols are also capable of ameliorating increased oxidative stress parameters and, given together with iron chelators, may provide a substantial improvement in the pathophysiology of hemolytic anemias and particularly in thalassemia.
Collapse
Affiliation(s)
- Eitan Fibach
- Department of Hematology, Hadassah-Hebrew University Medical Center, Ein-Kerem, Jerusalem, Israel.
| | | |
Collapse
|
33
|
Enea C, Seguin F, Petitpas-Mulliez J, Boildieu N, Boisseau N, Delpech N, Diaz V, Eugène M, Dugué B. 1H NMR-based metabolomics approach for exploring urinary metabolome modifications after acute and chronic physical exercise. Anal Bioanal Chem 2009; 396:1167-76. [DOI: 10.1007/s00216-009-3289-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 11/02/2009] [Accepted: 11/03/2009] [Indexed: 11/29/2022]
|
34
|
Freikman I, Amer J, Ringel I, Fibach E. A flow cytometry approach for quantitative analysis of cellular phosphatidylserine distribution and shedding. Anal Biochem 2009; 393:111-6. [DOI: 10.1016/j.ab.2009.06.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2009] [Revised: 05/24/2009] [Accepted: 06/11/2009] [Indexed: 12/27/2022]
|
35
|
|
36
|
Tripodi A, Cappellini MD, Chantarangkul V, Padovan L, Fasulo MR, Marcon A, Mannucci PM. Hypercoagulability in splenectomized thalassemic patients detected by whole-blood thromboelastometry, but not by thrombin generation in platelet-poor plasma. Haematologica 2009; 94:1520-7. [PMID: 19648162 DOI: 10.3324/haematol.2009.010546] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The mechanisms responsible for the increased thrombotic risk associated with thalassemia are still unclear. They might be related to the effects of red blood cell or endothelial cell derangements, increased numbers of platelets as well as abnormal plasma coagulation. DESIGN AND METHODS To evaluate the relative role played by cells and plasma we investigated 169 patients with thalassemia by means of thromboelastometry and thrombin generation tests. Thromboelastometry measures indices of the viscoelastic properties of whole blood after activation of coagulation and is characterized by the clotting time, which may be considered as a conventional coagulation time, clot formation time, defined as the time needed for the clot to reach a fixed firmness, and the maximum clot firmness, defined as the maximal amplitude of the tracing. RESULTS All the thromboelastometry parameters determined in whole blood (including shortened clotting time and clot formation time, and increased maximum clot firmness), were consistent with hypercoagulability, especially in splenectomized patients. Conversely, thrombin generation as determined in platelet-poor plasma was not. CONCLUSIONS These findings point to blood cells and/or platelets rather than to plasma abnormalities as the most important determinants of the thrombotic risk observed in thalassemic patients who had been splenectomized. These results might have important diagnostic and therapeutic implications.
Collapse
Affiliation(s)
- Armando Tripodi
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, University and IRCCS Maggiore Hospital, Mangiagalli and Regina Elena Foundation, Milan, Italy
| | | | | | | | | | | | | |
Collapse
|