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Wise TJ, Ott ME, Joseph MS, Welsby IJ, Darrow CC, McMahon TJ. Modulation of the allosteric and vasoregulatory arms of erythrocytic oxygen transport. Front Physiol 2024; 15:1394650. [PMID: 38915775 PMCID: PMC11194670 DOI: 10.3389/fphys.2024.1394650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/24/2024] [Indexed: 06/26/2024] Open
Abstract
Efficient distribution of oxygen (O2) to the tissues in mammals depends on the evolved ability of red blood cell (RBC) hemoglobin (Hb) to sense not only O2 levels, but metabolic cues such as pH, PCO2, and organic phosphates, and then dispense or take up oxygen accordingly. O2 delivery is the product of not only oxygen release from RBCs, but also blood flow, which itself is also governed by vasoactive molecular mediators exported by RBCs. These vascular signals, including ATP and S-nitrosothiols (SNOs) are produced and exported as a function of the oxygen and metabolic milieu, and then fine-tune peripheral metabolism through context-sensitive vasoregulation. Emerging and repurposed RBC-oriented therapeutics can modulate either or both of these allosteric and vasoregulatory activities, with a single molecule or other intervention influencing both arms of O2 transport in some cases. For example, organic phosphate repletion of stored RBCs boosts the negative allosteric effector 2,3 biphosphoglycerate (BPG) as well as the anti-adhesive molecule ATP. In sickle cell disease, aromatic aldehydes such as voxelotor can disfavor sickling by increasing O2 affinity, and in newer generations, these molecules have been coupled to vasoactive nitric oxide (NO)-releasing adducts. Activation of RBC pyruvate kinase also promotes a left shift in oxygen binding by consuming and lowering BPG, while increasing the ATP available for cell health and export on demand. Further translational and clinical investigation of these novel allosteric and/or vasoregulatory approaches to modulating O2 transport are expected to yield new insights and improve the ability to correct or compensate for anemia and other O2 delivery deficits.
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Affiliation(s)
- Thomas J. Wise
- Duke University School of Medicine, Durham, NC, United States
| | - Maura E. Ott
- Duke University School of Medicine, Durham, NC, United States
| | - Mahalah S. Joseph
- Duke University School of Medicine, Durham, NC, United States
- Florida International University School of Medicine, Miami, FL, United States
| | - Ian J. Welsby
- Duke University School of Medicine, Durham, NC, United States
| | - Cole C. Darrow
- Duke University School of Medicine, Durham, NC, United States
| | - Tim J. McMahon
- Duke University School of Medicine, Durham, NC, United States
- Durham VA Health Care System, Durham, NC, United States
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2
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Hayter EA, Azibere S, Skrajewski LA, Soule LD, Spence DM, Martin RS. A 3D-printed, multi-modal microfluidic device for measuring nitric oxide and ATP release from flowing red blood cells. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:3171-3179. [PMID: 35959771 PMCID: PMC10227723 DOI: 10.1039/d2ay00931e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this paper, a 3D-printed multi-modal device was designed and fabricated to simultaneously detect nitric oxide (NO) and adenosine triphosphate (ATP) in red blood cell suspensions prepared from whole blood. Once a sample was injected into the device, NO was first detected (via amperometry) using a three-electrode, dual-opposed, electrode configuration with a platinum-black/Nafion coated gold working electrode. After in-line amperometric detection of NO, ATP was detected via a chemiluminescence reaction, with a luciferin/luciferase solution continuously pumped into an integrated mixing T and the resulting light being measured with a PMT underneath the channel. The device was optimized for mixing/reaction conditions, limits of detection (40 nM for NO and 30 nM for ATP), and sensitivity. This device was used to determine the basal (normoxic) levels of NO and ATP in red blood cells, as well as an increase in concentration of both analytes under hypoxic conditions. Finally, the effect of storing red blood cells in a commonly used storage solution was also investigated by monitoring the production of NO and ATP over a three-week storage time.
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Affiliation(s)
- Elizabeth A Hayter
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave St. Louis, MO, USA, 63103.
| | - Samuel Azibere
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave St. Louis, MO, USA, 63103.
| | - Lauren A Skrajewski
- Department of Biomedical Engineering, Institute for Quantitative Health Science & Engineering, Michigan State University, USA
| | - Logan D Soule
- Department of Biomedical Engineering, Institute for Quantitative Health Science & Engineering, Michigan State University, USA
| | - Dana M Spence
- Department of Biomedical Engineering, Institute for Quantitative Health Science & Engineering, Michigan State University, USA
| | - R Scott Martin
- Department of Chemistry, Saint Louis University, 3501 Laclede Ave St. Louis, MO, USA, 63103.
- Center for Additive Manufacturing, Saint Louis University, USA
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Liu Y, Hesse LE, Geiger MK, Zinn KR, McMahon TJ, Chen C, Spence DM. A 3D-printed transfusion platform reveals beneficial effects of normoglycemic erythrocyte storage solutions and a novel rejuvenating solution. LAB ON A CHIP 2022; 22:1310-1320. [PMID: 35258064 PMCID: PMC9235508 DOI: 10.1039/d2lc00030j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A set of 3D-printed analytical devices were developed to investigate erythrocytes (ERYs) processed in conventional and modified storage solutions used in transfusion medicine. During storage, prior to transfusion into a patient recipient, ERYs undergo many chemical and physical changes that are not completely understood. However, these changes are thought to contribute to an increase in post-transfusion complications, and even an increase in mortality rates. Here, a reusable fluidic device (fabricated with additive manufacturing technologies) enabled the evaluation of ERYs prior to, and after, introduction into a stream of flowing fresh ERYs, thus representing components of an in vivo ERY transfusion on an in vitro platform. Specifically, ERYs stored in conventional and glucose-modified solutions were assayed by chemiluminescence for their ability to release flow-induced ATP. The ERY's deformability was also determined throughout the storage duration using a novel membrane transport approach housed in a 3D-printed scaffold. Results show that hyperglycemic conditions permanently alter ERY deformability, which may explain the reduced ATP release, as this phenomenon is related to cell deformability. Importantly, the reduced deformability and ATP release were reversible in an in vitro model of transfusion; specifically, when stored cells were introduced into a flowing stream of healthy cells, the ERY-derived release of ATP and cell deformability both returned to states similar to that of non-stored cells. However, after 1-2 weeks of storage, the deleterious effects of the storage were permanent. These results suggest that currently approved hyperglycemic storage solutions are having adverse effects on stored ERYs used in transfusion medicine and that normoglycemic storage may reduce the storage lesion, especially for cells stored for longer than 14 days.
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Affiliation(s)
- Yueli Liu
- Departments of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Laura E Hesse
- Departments of Chemistry, Michigan State University, East Lansing, MI, 48824, USA
| | - Morgan K Geiger
- Biomedical Engineering, Michigan State University, East Lansing, MI, 48824, USA.
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Kurt R Zinn
- Biomedical Engineering, Michigan State University, East Lansing, MI, 48824, USA.
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI, 48824, USA
| | - Timothy J McMahon
- Department of Medicine, Duke University, Durham, North Carolina, 27710, USA
| | - Chengpeng Chen
- Department of Chemistry and Biochemistry, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Dana M Spence
- Biomedical Engineering, Michigan State University, East Lansing, MI, 48824, USA.
- Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI, 48824, USA
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4
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Oh JY, Bae CY, Kasztan M, Pollock DM, Russell RT, Lebensburger J, Patel RP. Peroxiredoxin-2 recycling is slower in denser and pediatric sickle cell red cells. FASEB J 2022; 36:e22267. [PMID: 35306694 PMCID: PMC10155932 DOI: 10.1096/fj.202200052r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/22/2022] [Accepted: 03/08/2022] [Indexed: 11/11/2022]
Abstract
Peroxiredoxin-2 (Prx-2) is a critical antioxidant protein in red blood cells (RBC). Prx-2 is oxidized to a disulfide covalently-bound dimer by H2 O2 , and then reduced back by the NADPH-dependent thioredoxin-thioredoxin reductase system. The reduction of oxidized Prx-2 is relatively slow in RBCs. Since Prx-2 is highly abundant, Prx-2s' peroxidase catalytic cycle is not considered to be limiting under normal conditions. However, whether Prx-2 recycling becomes limiting when RBCs are exposed to stress is not known. Using three different model systems characterized by increased oxidative damage to RBCs spanning the physiologic (endogenous RBCs of different ages), therapeutic (cold-stored RBCs in blood banks) and pathologic (RBCs from sickle cell disease (SCD) patients and humanized SCD mice) spectrum, basal levels of Prx-2 oxidation and Prx-2 recycling kinetics after addition of H2 O2 were determined. The reduction of oxidized Prx-2 was significantly slower in older versuin older versus younger RBCs, in RBCs stored for 4-5 weeks compared to 1 week, and in RBC from pediatric SCD patients compared to RBCs from control non-SCD patients. Similarly, the rate of Prx-2 recycling was slower in humanized SCD mice compared to WT mice. Treatment of RBC with carbon monoxide (CO) to limit heme-peroxidase activity had no effect on Prx-2 recycling kinetics. Treatment with glucose attenuated slowed Prx-2 recycling in older RBCs and SCD RBCs, but not stored RBCs. In conclusion, the reduction of oxidized Prx-2 can be further slowed in RBCs, which may limit the protection afforded by this antioxidant protein in settings associated with erythrocyte stress.
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Affiliation(s)
- Joo-Yeun Oh
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Chae Yun Bae
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Malgorzata Kasztan
- Pediatric Hematology Oncology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - David M Pollock
- Section of Cardio-Renal Physiology and Medicine, Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Robert T Russell
- Division of Pediatric Surgery, Department of Surgery, Children's of Alabama, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jeffrey Lebensburger
- Pediatric Hematology Oncology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Rakesh P Patel
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.,Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Vázquez M, Anfossi L, Ben-Yoav H, Diéguez L, Karopka T, Della Ventura B, Abalde-Cela S, Minopoli A, Di Nardo F, Shukla VK, Teixeira A, Tvarijonaviciute A, Franco-Martínez L. Use of some cost-effective technologies for a routine clinical pathology laboratory. LAB ON A CHIP 2021; 21:4330-4351. [PMID: 34664599 DOI: 10.1039/d1lc00658d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Classically, the need for highly sophisticated instruments with important economic costs has been a major limiting factor for clinical pathology laboratories, especially in developing countries. With the aim of making clinical pathology more accessible, a wide variety of free or economical technologies have been developed worldwide in the last few years. 3D printing and Arduino approaches can provide up to 94% economical savings in hardware and instrumentation in comparison to commercial alternatives. The vast selection of point-of-care-tests (POCT) currently available also limits the need for specific instruments or personnel, as they can be used almost anywhere and by anyone. Lastly, there are dozens of free and libre digital tools available in health informatics. This review provides an overview of the state-of-the-art on cost-effective alternatives with applications in routine clinical pathology laboratories. In this context, a variety of technologies including 3D printing and Arduino, lateral flow assays, plasmonic biosensors, and microfluidics, as well as laboratory information systems, are discussed. This review aims to serve as an introduction to different technologies that can make clinical pathology more accessible and, therefore, contribute to achieve universal health coverage.
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Affiliation(s)
- Mercedes Vázquez
- National Centre For Sensor Research, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Laura Anfossi
- Department of Chemistry, University of Turin, Via Giuria, 5, I-10125 Turin, Italy
| | - Hadar Ben-Yoav
- Nanobioelectronics Laboratory (NBEL), Department of Biomedical Engineering, Ilse Katz Institute of Nanoscale Science and Technology, Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Lorena Diéguez
- Medical Devices Research Group, International Iberian Nanotechnology Laboratory - INL, 4715-330 Braga, Portugal
| | | | - Bartolomeo Della Ventura
- Department of Physics "E. Pancini", University of Naples Federico II, Via Cintia 26, I-80126 Napoli, Italy
| | - Sara Abalde-Cela
- Medical Devices Research Group, International Iberian Nanotechnology Laboratory - INL, 4715-330 Braga, Portugal
| | - Antonio Minopoli
- Department of Physics "E. Pancini", University of Naples Federico II, Via Cintia 26, I-80126 Napoli, Italy
| | - Fabio Di Nardo
- Department of Chemistry, University of Turin, Via Giuria, 5, I-10125 Turin, Italy
| | - Vikas Kumar Shukla
- Nanobioelectronics Laboratory (NBEL), Department of Biomedical Engineering, Ilse Katz Institute of Nanoscale Science and Technology, Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Alexandra Teixeira
- Medical Devices Research Group, International Iberian Nanotechnology Laboratory - INL, 4715-330 Braga, Portugal
| | - Asta Tvarijonaviciute
- Interdisciplinary Laboratory of Clinical Pathology, Interlab-UMU, Regional Campus of International Excellence 'Campus Mare Nostrum', University of Murcia, 30100 Murcia, Spain.
| | - Lorena Franco-Martínez
- Interdisciplinary Laboratory of Clinical Pathology, Interlab-UMU, Regional Campus of International Excellence 'Campus Mare Nostrum', University of Murcia, 30100 Murcia, Spain.
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6
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Livshits L, Barshtein G, Arbell D, Gural A, Levin C, Guizouarn H. Do We Store Packed Red Blood Cells under "Quasi-Diabetic" Conditions? Biomolecules 2021; 11:biom11070992. [PMID: 34356616 PMCID: PMC8301930 DOI: 10.3390/biom11070992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/21/2021] [Accepted: 07/01/2021] [Indexed: 01/28/2023] Open
Abstract
Red blood cell (RBC) transfusion is one of the most common therapeutic procedures in modern medicine. Although frequently lifesaving, it often has deleterious side effects. RBC quality is one of the critical factors for transfusion efficacy and safety. The role of various factors in the cells’ ability to maintain their functionality during storage is widely discussed in professional literature. Thus, the extra- and intracellular factors inducing an accelerated RBC aging need to be identified and therapeutically modified. Despite the extensively studied in vivo effect of chronic hyperglycemia on RBC hemodynamic and metabolic properties, as well as on their lifespan, only limited attention has been directed at the high sugar concentration in RBCs storage media, a possible cause of damage to red blood cells. This mini-review aims to compare the biophysical and biochemical changes observed in the red blood cells during cold storage and in patients with non-insulin-dependent diabetes mellitus (NIDDM). Given the well-described corresponding RBC alterations in NIDDM and during cold storage, we may regard the stored (especially long-stored) RBCs as “quasi-diabetic”. Keeping in mind that these RBC modifications may be crucial for the initial steps of microvascular pathogenesis, suitable preventive care for the transfused patients should be considered. We hope that our hypothesis will stimulate targeted experimental research to establish a relationship between a high sugar concentration in a storage medium and a deterioration in cells’ functional properties during storage.
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Affiliation(s)
- Leonid Livshits
- Red Blood Cell Research Group, Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zürich, CH-8057 Zurich, Switzerland;
| | - Gregory Barshtein
- Biochemistry Department, The Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91905, Israel
- Correspondence: ; Tel.: +972-2-6758309
| | - Dan Arbell
- Pediatric Surgery Department, Hadassah Hebrew University Medical Center, Jerusalem 91120, Israel;
| | - Alexander Gural
- Department of Hematology, Hadassah Hebrew University Medical Center, Jerusalem 91120, Israel;
| | - Carina Levin
- Pediatric Hematology Unit, Emek Medical Center, Afula 1834111, Israel;
- The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - Hélène Guizouarn
- Institut de Biologie Valrose, Université Côte d’Azur, CNRS, Inserm, 28 Av. Valrose, 06100 Nice, France;
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7
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Mancuso JE, Jayaraman A, Ristenpart WD. Centrifugation-induced release of ATP from red blood cells. PLoS One 2018; 13:e0203270. [PMID: 30183749 PMCID: PMC6124747 DOI: 10.1371/journal.pone.0203270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 08/17/2018] [Indexed: 11/19/2022] Open
Abstract
Centrifugation is the primary preparation step for isolating red blood cells (RBCs) from whole blood, including for use in studies focused on transduction of adenosine triphosphate (ATP), an important vasodilatory signaling molecule. Despite the wide use of centrifugation, little work has focused on how the centrifugation itself affects release of ATP from RBCs prior to subsequent experimentation. Here we report that both the centrifugation force and duration have a pronounced impact on the concentration of ATP present in the packed RBCs following centrifugation. Multiple subsequent centrifugations yield extracellular ATP concentrations comparable to the amount released during the initial centrifugation, suggesting this effect is cumulative. Pairwise measurements of hemoglobin and ATP suggest the presence of ATP is primarily due to an increase in centrifugation-induced hemolysis. These results indicate that common centrifugation parameters, within the ranges explored here, can release ATP in quantities comparable to the low end of the range of values measured in typical ATP transduction experiments, potentially complicating experimental interpretation of those results.
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Affiliation(s)
- Jordan E. Mancuso
- Department of Chemical Engineering, University of California Davis, Davis, California, United States of America
| | - Anjana Jayaraman
- Department of Chemical Engineering, University of California Davis, Davis, California, United States of America
| | - William D. Ristenpart
- Department of Chemical Engineering, University of California Davis, Davis, California, United States of America
- * E-mail:
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8
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Miglio A, Stefanetti V, Antognoni MT, Cappelli K, Capomaccio S, Coletti M, Passamonti F. Stored Canine Whole Blood Units: What is the Real Risk of Bacterial Contamination? J Vet Intern Med 2016; 30:1830-1837. [PMID: 27734567 PMCID: PMC5115181 DOI: 10.1111/jvim.14593] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 08/16/2016] [Accepted: 09/07/2016] [Indexed: 12/20/2022] Open
Abstract
Background Bacterial contamination of whole blood (WB) units can result in transfusion‐transmitted infection, but the extent of the risk has not been established and may be underestimated in veterinary medicine. Objectives To detect, quantify, and identify bacterial microorganisms in 49 canine WB units during their shelf life. Animals Forty‐nine healthy adult dogs. Methods Forty‐nine WB units were included in the study. Immediately after collection, 8 sterile samples from the tube segment line of each unit were aseptically collected and tested for bacterial contamination on days 0, 1, 7, 14, 21, 28, 35, and 42 of storage. A qPCR assay was performed on days 0, 21, and 35 to identify and quantify any bacterial DNA. Results On bacterial culture, 47/49 blood units were negative at all time points tested, 1 unit was positive for Enterococcus spp. on days 0 and 1, and 1 was positive for Escherichia coli on day 35. On qPCR assay, 26 of 49 blood units were positive on at least 1 time point and the bacterial loads of the sequences detected (Propionobacterium spp., Corynebacterium spp., Caulobacter spp., Pseudomonas spp., Enterococcus spp., Serratia spp., and Leucobacter spp.) were <80 genome equivalents (GE)/μL. Conclusions and Clinical Importance Most of the organisms detected were common bacteria, not usually implicated in septic transfusion reactions. The very low number of GE detected constitutes an acceptable risk of bacterial contamination, indicating that WB units have a good sanitary shelf life during commercial storage.
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Affiliation(s)
- A Miglio
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - V Stefanetti
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - M T Antognoni
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - K Cappelli
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - S Capomaccio
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - M Coletti
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - F Passamonti
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
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9
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Saytashev I, Glenn R, Murashova GA, Osseiran S, Spence D, Evans CL, Dantus M. Multiphoton excited hemoglobin fluorescence and third harmonic generation for non-invasive microscopy of stored blood. BIOMEDICAL OPTICS EXPRESS 2016; 7:3449-3460. [PMID: 27699111 PMCID: PMC5030023 DOI: 10.1364/boe.7.003449] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/20/2016] [Accepted: 08/08/2016] [Indexed: 05/18/2023]
Abstract
Red blood cells (RBC) in two-photon excited fluorescence (TPEF) microscopy usually appear as dark disks because of their low fluorescent signal. Here we use 15fs 800nm pulses for TPEF, 45fs 1060nm pulses for three-photon excited fluorescence, and third harmonic generation (THG) imaging. We find sufficient fluorescent signal that we attribute to hemoglobin fluorescence after comparing time and wavelength resolved spectra of other expected RBC endogenous fluorophores: NADH, FAD, biliverdin, and bilirubin. We find that both TPEF and THG microscopy can be used to examine erythrocyte morphology non-invasively without breaching a blood storage bag.
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Affiliation(s)
- Ilyas Saytashev
- Department of Chemistry, Michigan State University, 578 S Shaw Ln., East Lansing, MI 48824, USA
| | - Rachel Glenn
- Department of Chemistry, Michigan State University, 578 S Shaw Ln., East Lansing, MI 48824, USA
| | - Gabrielle A. Murashova
- Department of Chemistry, Michigan State University, 578 S Shaw Ln., East Lansing, MI 48824, USA
| | - Sam Osseiran
- Harvard-MIT Division of Health Sciences and Technology, 77 Massachusetts Avenue E25-519, Cambridge, MA 02139, USA
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129, USA
| | - Dana Spence
- Department of Chemistry, Michigan State University, 578 S Shaw Ln., East Lansing, MI 48824, USA
| | - Conor L. Evans
- Wellman Center for Photomedicine, Harvard Medical School, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129, USA
| | - Marcos Dantus
- Department of Chemistry, Michigan State University, 578 S Shaw Ln., East Lansing, MI 48824, USA
- Department of Physics and Astronomy, Michigan State University, 567 Wilson Rd., East Lansing, MI 48824, USA
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10
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Godwin LA, Brooks JC, Hoepfner LD, Wanders D, Judd RL, Easley CJ. A microfluidic interface for the culture and sampling of adiponectin from primary adipocytes. Analyst 2015; 140:1019-25. [PMID: 25423362 DOI: 10.1039/c4an01725k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Secreted from adipose tissue, adiponectin is a vital endocrine hormone that acts in glucose metabolism, thereby establishing its crucial role in diabetes, obesity, and other metabolic disease states. Insulin exposure to primary adipocytes cultured in static conditions has been shown to stimulate adiponectin secretion. However, conventional, static methodology for culturing and stimulating adipocytes falls short of truly mimicking physiological environments. Along with decreases in experimental costs and sample volume, and increased temporal resolution, microfluidic platforms permit small-volume flowing cell culture systems, which more accurately represent the constant flow conditions through vasculature in vivo. Here, we have integrated a customized primary tissue culture reservoir into a passively operated microfluidic device made of polydimethylsiloxane (PDMS). Fabrication of the reservoir was accomplished through unique PDMS "landscaping" above sampling channels, with a design strategy targeted to primary adipocytes to overcome issues of positive cell buoyancy. This reservoir allowed three-dimensional culture of primary murine adipocytes, accurate control over stimulants via constant perfusion, and sampling of adipokine secretion during various treatments. As the first report of primary adipocyte culture and sampling within microfluidic systems, this work sets the stage for future studies in adipokine secretion dynamics.
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Affiliation(s)
- Leah A Godwin
- Auburn University, Department of Chemistry and Biochemistry, Auburn, AL 36849, USA.
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11
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Chen C, Wang Y, Lockwood SY, Spence DM. 3D-printed fluidic devices enable quantitative evaluation of blood components in modified storage solutions for use in transfusion medicine. Analyst 2015; 139:3219-26. [PMID: 24660218 DOI: 10.1039/c3an02357e] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A fluidic device constructed with a 3D-printer can be used to investigate stored blood components with subsequent high-throughput calibration and readout with a standard plate reader.
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Affiliation(s)
- Chengpeng Chen
- Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA.
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12
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Skommer J, Wlodkowic D. Successes and future outlook for microfluidics-based cardiovascular drug discovery. Expert Opin Drug Discov 2015; 10:231-44. [PMID: 25672221 DOI: 10.1517/17460441.2015.1001736] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
INTRODUCTION The greatest advantage of using microfluidics as a platform for the assessment of cardiovascular drug action is its ability to finely regulate fluid flow conditions, including flow rate, shear stress and pulsatile flow. At the same time, microfluidics provide means for modifying the vessel geometry (bifurcations, stenoses, complex networks), the type of surface of the vessel walls, and for patterning cells in 3D tissue-like architecture, including generation of lumen walls lined with cells and heart-on-a-chip structures for mimicking ventricular cardiomyocyte physiology. In addition, owing to the small volume of required specimens, microfluidics is ideally suited to clinical situations whereby monitoring of drug dosing or efficacy needs to be coupled with minimal phlebotomy-related drug loss. AREAS COVERED In this review, the authors highlight potential applications for the currently existing and emerging technologies and offer several suggestions on how to close the development cycle of microfluidic devices for cardiovascular drug discovery. EXPERT OPINION The ultimate goal in microfluidics research for drug discovery is to develop 'human-on-a-chip' systems, whereby several organ cultures, including the vasculature and the heart, can mimic complex interactions between the organs and body systems. This would provide in vivo-like pharmacokinetics and pharmacodynamics for drug ADMET assessment. At present, however, the great variety of available designs does not go hand in hand with their use by the pharmaceutical community.
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Affiliation(s)
- Joanna Skommer
- RMIT University, School of Applied Sciences , Melbourne, VIC , Australia
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Kirby BS, Hanna G, Hendargo HC, McMahon TJ. Restoration of intracellular ATP production in banked red blood cells improves inducible ATP export and suppresses RBC-endothelial adhesion. Am J Physiol Heart Circ Physiol 2014; 307:H1737-44. [PMID: 25305182 DOI: 10.1152/ajpheart.00542.2014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Transfusion of banked red blood cells (RBCs) has been associated with poor cardiovascular outcomes. Storage-induced alterations in RBC glycolytic flux, attenuated ATP export, and microvascular adhesion of transfused RBCs in vivo could contribute, but the underlying mechanisms have not been tested. We tested the novel hypothesis that improving deoxygenation-induced metabolic flux and the associated intracellular ATP generation in stored RBCs (sRBCs) results in an increased extracellular ATP export and suppresses microvascular adhesion of RBCs to endothelium in vivo following transfusion. We show deficient intracellular ATP production and ATP export by human sRBCs during deoxygenation (impairments ~42% and 49%, respectively). sRBC pretreatment with a solution containing glycolytic intermediate/purine/phosphate precursors (i.e., "PIPA") restored deoxygenation-induced intracellular ATP production and promoted extracellular ATP export (improvement ~120% and 50%, respectively). In a nude mouse model of transfusion, adhesion of human RBCs to the microvasculature in vivo was examined. Only 2% of fresh RBCs (fRBCs) transfused adhered to the vascular wall, compared with 16% of sRBCs transfused. PIPA pretreatment of sRBCs significantly reduced adhesion to just 5%. In hypoxia, adhesion of sRBCs transfused was significantly augmented (up to 21%), but not following transfusion of fRBCs or PIPA-treated sRBCs (3.5% or 6%). Enhancing the capacity for deoxygenation-induced glycolytic flux within sRBCs increases their ability to generate intracellular ATP, improves the inducible export of extracellular anti-adhesive ATP, and consequently suppresses adhesion of stored, transfused RBCs to the vascular wall in vivo.
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Affiliation(s)
- Brett S Kirby
- Department of Medicine, Division of Hematology, Duke University Medical Center, Durham, North Carolina
| | - Gabi Hanna
- Optical Molecular Imaging and Analysis Core, Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
| | - Hansford C Hendargo
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina
| | - Timothy J McMahon
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care Medicine, Duke University Medical Center, Durham, North Carolina; and Durham Veterans Affairs Medical Center, Durham, North Carolina
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