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Red blood cell exchange

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https://www.readbyqxmd.com/read/28622333/acute-40-exchange-transfusion-with-hemoglobin-vesicles-in-a-mouse-pneumonectomy-model
#1
Mitsutomo Kohno, Tatsuhiko Ikeda, Ryo Hashimoto, Yotaro Izumi, Masazumi Watanabe, Hirohisa Horinouchi, Hiromi Sakai, Koichi Kobayashi, Masayuki Iwazaki
OBJECTIVES: Hemoglobin vesicles (HbVs) function as a red blood cell (RBC) substitute and are composed of purified hemoglobin encapsulated in a phospholipid bilayer membrane. The performance of HbVs as a substitute for RBC transfusions was examined in a mouse model of pneumonectomy following acute 40% exchange-transfusion with HbVs. METHODS: Before performing left pneumonectomies, 40% of the blood volume of mice was replaced with a) lactated Ringer's solution (control), b) 5% recombinant human serum albumin (rHSA), c) mouse RBCs shed in rHSA (mRBCs/rHSA), or d) HbV suspended in rHSA (HbV/rHSA)...
2017: PloS One
https://www.readbyqxmd.com/read/28596233/adaptable-interaction-between-aquaporin-1-and-band-3-reveals-a-potential-role-of-water-channel-in-blood-co2-transport
#2
Kate Hsu, Ting-Ying Lee, Ammasi Periasamy, Fu-Jen Kao, Li-Tzu Li, Chuang-Yu Lin, Hui-Ju Lin, Marie Lin
Human CO2 respiration requires rapid conversion between CO2 and HCO3(-) Carbonic anhydrase II facilitates this reversible reaction inside red blood cells, and band 3 [anion exchange (AE)-1] provides a passage for HCO3(-) flux across the cell membrane. These 2 proteins are core components of the CO2 transport metabolon. Intracellular H2O is necessary for CO2/HCO3(-) conversion. However, abundantly expressed aquaporin (AQP)-1 in erythrocytes is thought not to be part of band 3 complexes or the CO2 transport metabolon...
June 8, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28584527/efficacy-and-safety-of-manual-partial-red-cell-exchange-in-the-management-of-severe-complications-of-sickle-cell-disease-in-a-developing-country
#3
B F Faye, D Sow, M Seck, N Dieng, S A Toure, M Gadji, A B Senghor, Y B Gueye, D Sy, A Sall, T N Dieye, A O Toure, S Diop
INTRODUCTION: The realization of red cell exchange (RCE) in Africa faces the lack of blood, transfusion safety, and equipment. We evaluated its efficacy and safety in severe complications of sickle cell disease. PATIENTS AND METHOD: Manual partial RCE was performed among sickle cell patients who had severe complications. Efficacy was evaluated by clinical evolution, blood count, and electrophoresis of hemoglobin. Safety was evaluated on adverse effects, infections, and alloimmunization...
2017: Advances in Hematology
https://www.readbyqxmd.com/read/28544309/increased-complications-of-chronic-erythrocytapheresis-compared-with-manual-exchange-transfusions-in-children-and-adolescents-with-sickle-cell-disease
#4
Deborah Woods, Robert J Hayashi, Michael M Binkley, Gianna W Sparks, Monica L Hulbert
BACKGROUND: Children and adolescents with sickle cell disease (SCD) are at high risk of strokes and are frequently treated with red blood cell (RBC) transfusions. The goal is to suppress hemoglobin (Hb) S while minimizing transfusion-induced iron overload. RBCs may be given via simple transfusion, manual exchange transfusion (MET), or erythrocytapheresis (aRBCX). Chronic transfusion practices vary among institutions. METHODS: This single-institution, retrospective cohort study compares Hb S control and therapy complication rates between MET and aRBCX in a cohort of children and adolescents with SCD and stroke during a 5-year period from 2008 through 2012...
May 19, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28470719/from-total-blood-exchange-to-erythrocytapheresis-and-back-to-treat-complications-of-sickle-cell-disease
#5
Samir K Ballas
Erythrocytapheresis is an important procedure in the management of certain complications of sickle cell disease, including acute stroke, stroke prevention, acute chest syndrome, and multiorgan failure. Erythrocytapheresis in sickle cell disease simply entails the removal of the patient's red blood cells containing the abnormal sickle hemoglobin and replacing them with normal red blood cells carrying normal hemoglobin. In these procedures, the patient's plasma is not exchanged but is returned to the patient...
May 3, 2017: Transfusion
https://www.readbyqxmd.com/read/28465180/application-of-isotope-exchange-based-mass-spectrometry-to-understand-the-mechanism-of-inhibition-of-sickle-hemoglobin-polymerization-upon-oxygenation
#6
Rajdeep Das, Amrita Mitra, Vijay Bhat, Amit Kumar Mandal
Sickle hemoglobin (HbS) polymerization initiates in the deoxy state with the binding of hydrophobic patch formed by the isopropyl group of βVal6 residue of a hemoglobin tetramer with the hydrophobic pocket of another tetramer, whose hydrophobic patch binds to the hydrophobic groove of a third molecule. Subsequent elongation of a single stranded polymer followed by the formation of a double strand and finally combination of seven such pairs of double strands results in a fourteen stranded fibrous polymer. Precipitation of this fiber inside the erythrocytes results in sickling of red blood cells...
April 29, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/28436274/depletion-of-hdl3-high-density-lipoprotein-and-altered-functionality-of-hdl2-in-blood-from-sickle-cell-patients
#7
Eric Soupene, Sandra K Larkin, Frans A Kuypers
In sickle cell disease (SCD), alterations of cholesterol metabolism is in part related to abnormal levels and activity of plasma proteins such as lecithin cholesterol acyltransferase (LCAT), and apolipoprotein A-I (ApoA-I). In addition, the size distribution of ApoA-I high density lipoproteins (HDL) differs from normal blood. The ratio of the amount of HDL2 particle relative to the smaller higher density pre-β HDL (HDL3) particle was shifted toward HDL2. This lipoprotein imbalance is exacerbated during acute vaso-occlusive episodes (VOE) as the relative levels of HDL3 decrease...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28425749/hemolytic-transfusion-reaction-attributable-to-anti-dia
#8
Arthur J Joyce, Kelli M Quantock, Ray Banh, Yew W Liew
In situations when a patient's antibody detection test is negative, many institutions have moved from an indirect antiglobulin test (IAT) crossmatch to an electronic crossmatch system. Here we report a case of an acute hemolytic transfusion reaction attributable to anti-Dia in a patient with a negative antibody detection test. A 22-year-old female patient with a diagnosis of β thalassemia and sickle cell anemia commenced a routine exchange transfusion of 5 units of red blood cells (RBCs) in the apheresis unit as part of her regular treatment...
January 2017: Immunohematology
https://www.readbyqxmd.com/read/28422403/blood-chimerism-in-dizygotic-monochorionic-twins-during-5-years-observation
#9
M H Dziegiel, M H Hansen, S Haedersdal, A N Barrett, K Rieneck, K M Main, A T Hansen, F B Clausen
Dizygotic monochorionic twin pregnancies can result in blood chimerism due to in utero twin-to-twin exchange of stem cells. In this case, we examined the proportion of allogeneic red blood cells by flow cytometry and the proportion of allogeneic nucleated cells by digital polymerase chain reaction at 7 months and again at 5 years. We found an increase in the proportion of allogeneic cells from 63% to 89% in one twin, and a similar increase in autologous cells in the other twin from 57% to 84%. A paradigm for stem cell therapy could be modeled on this case: induction of tolerance and chimerism by antenatal transfusion of donor stem cells...
April 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28387307/stomatin-modulates-the-activity-of-the-anion-exchanger-1-ae1-slc4a1
#10
Sandrine Genetet, Alexandra Desrames, Youcef Chouali, Pierre Ripoche, Claude Lopez, Isabelle Mouro-Chanteloup
Anion Exchanger 1 (AE1) and stomatin are integral proteins of the red blood cell (RBC) membrane. Erythroid and kidney AE1 play a major role in HCO3(-) and Cl(-) exchange. Stomatins down-regulate the activity of many channels and transporters. Biochemical studies suggested an interaction of erythroid AE1 with stomatin. Moreover, we previously reported normal AE1 expression level in stomatin-deficient RBCs. Here, the ability of stomatin to modulate AE1-dependent Cl(-)/HCO3(-) exchange was evaluated using stopped-flow methods...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28387057/hypoxia-enhanced-adhesion-of-red-blood-cells-in-microscale-flow
#11
Myeongseop Kim, Yunus Alapan, Anima Adhikari, Jane A Little, Umut A Gurkan
OBJECTIVES: The advancement of microfluidic technology has facilitated the simulation of physiological conditions of the microcirculation, such as oxygen tension, fluid flow, and shear stress in these devices. Here, we present a micro-gas exchanger integrated with microfluidics to study red blood cell (RBC) adhesion under hypoxic flow conditions mimicking post-capillary venules. METHODS: We simulated a range of physiological conditions and explored RBC adhesion to endothelial or sub-endothelial components (fibronectin, FN, or laminin, LN)...
April 7, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28381242/the-150-most-important-questions-in-cancer-research-and-clinical-oncology-series-questions-15-24-edited-by-chinese-journal-of-cancer
#12
EDITORIAL
(no author information available yet)
To accelerate our endeavors to overcome cancer, Chinese Journal of Cancer has launched a program of publishing 150 most important questions in cancer research and clinical oncology. In this article, 10 more questions are presented as follows. Question 15: Can tumor-induced erythrogenesis provide qualified red blood cells for carrying oxygen to distant organs? Question 16: Can we overcome tumor resistance to platinum-containing antineoplastic drugs by activating the sensitivity factors in the tumor? Question 17: How can a cancer cell stay dormant for years? Question 18: Why do cancer cells use distinct transcriptomic and proteomic programs to reach the same metastatic phenotype? Question 19: Why do some cancers regress spontaneously? Question 20: What are the regulatory mechanisms occurring in donor cells that determine selective sorting of biological content into vesicles and their biological consequences in recipient cells? Are the genetic transfer and exchange of biological messages between cells transient? Is the phenotypic manipulation of recipient cells temporary or prolonged and persistent? If extracellular vesicles possess immune-modulatory potential, how could they be exploited for immune interventions and cancer immunotherapy? Presumably the cargo of extracellular vesicles reflects the cells of their origin and can be used for cancer diagnosis, how could the uniform/stringent capture criteria be met universally for applying EVs in point-of-care diagnostics for cancer patients? Question 21: Can we use self-sampling technologies to monitor the tumor genetic alterations for more precise targeted therapy? Can we cure a heterogeneous tumor by sequentially targeting the driver molecules? Question 22: Can we postpone the onset of non-infection-related cancers? Question 23: How many types of cells can jointly form the tumor vasculature to provide blood supply for tumor progression? Question 24: How tumor cells transmit their epigenetic features to daughter cells and maintain the malignant phenotype?...
April 5, 2017: Chinese Journal of Cancer
https://www.readbyqxmd.com/read/28366590/increasing-use-of-therapeutic-apheresis-as-a-liver-saving-modality
#13
Hyun-Ji Lee, Kyung-Hwa Shin, Duyeal Song, Sun-Min Lee, Chulhun L Chang, Chong Woo Chu, Je Ho Ryu, Tae Bum Lee, Yong-Mok Park, Kwang Ho Yang, Byung Hyun Choi, Hyung-Hoi Kim
INTRODUCTION: Therapeutic plasma exchange (TPE) is used for temporary support of liver function in patients presenting with early graft dysfunction after liver transplantation (LT) or liver surgery. We analyzed the effect of therapeutic apheresis on patients with liver disease. METHODS: Between January 2011 and August 2016, 93 apheresis procedures were performed for 26 patients at our institution. Anti-ABO isoagglutination immunoglobulin (Ig) M titer was checked using a type A and type B 3% red blood cell (RBC) suspension in saline with two-fold serial dilutions of patient serum...
March 18, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28362411/continuous-manual-exchange-transfusion-for-patients-with-sickle-cell-disease-an-efficient-method-to-avoid-iron-overload
#14
Bérengère Koehl, Florence Missud, Laurent Holvoet, Ghislaine Ithier, Oliver Sakalian-Black, Zinedine Haouari, Emmanuelle Lesprit, André Baruchel, Malika Benkerrou
Children with sickle cell anemia (SCA) may be at risk of cerebral vasculopathy and strokes, which can be prevented by chronic transfusion programs. Repeated transfusions of packed red blood cells (PRBCs) is currently the simplest and most used technique for chronic transfusion programs. However, iron overload is one of the major side effects of this therapy. More developed methods exist, notably the apheresis of RBC (erythrapheresis), which is currently the safest and most efficient method. However, it is costly, complicated, and cannot be implemented everywhere, nor is it suitable for all patients...
March 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28358766/early-complications-and-associated-perioperative-factors-in-nonsyndromic-craniosynostosis
#15
Yunhe Lu, Abdulsamad Ghanem, Tianyi Cai, Junyi Yang, Xiongzheng Mu
This is the first Eastern center-based retrospective report on early complications and associated perioperative factors of nonsyndromic craniosynostosis (NSC). The authors' purpose is to tailor preoperative counseling, convey objective perioperative data, and determinants for early complications in NSC so as to enhance exchanges with international center. Inclusion criteria required a diagnosis of NSC confirmed by 3-dimentional computed tomography scans and complete medical record. Genetic evidence of syndromic craniosynostosis was excluded...
March 29, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28290104/erratum-to-spectra-optia-%C3%A2-for-automated-red-blood-cell-exchange-in-patients-with-sickle-cell-disease-a-nice-medical-technology-guidance
#16
Iain Willits, Helen Cole, Roseanne Jones, Kimberley Carter, Mick Arber, Michelle Jenks, Joyce Craig, Andrew Sims
No abstract text is available yet for this article.
March 13, 2017: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/28275334/clinical-significance-of-an-alloantibody-against-the-kell-blood-group-glycoprotein
#17
Stella Maris Mattaloni, Carine Arnoni, Rosario Céspedes, Claudia Nonaka, Carolina Trucco Boggione, Melina Eliana Luján Brajovich, Andrea Trejo, Néstor Zani, Claudia Silvia Biondi, Lilian Castilho, Carlos Miquel Cotorruelo
BACKGROUND: Kell null (K0) individuals can produce anti-Ku, an antibody against many epitopes in the Kell glycoprotein, after transfusion and/or pregnancy. Since sensitized K0 patients are rare, little is known about anti-Ku clinical relevance and in particular about its association to hemolytic disease of the fetus and newborn. CASE REPORT: This work describes a case of neonatal hyperbilirubinemia due to immune-mediated erythrocyte destruction by an alloantibody directed against the Kell glycoprotein...
January 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28265287/pernicious-anemia-associated-cobalamin-deficiency-and-thrombotic-microangiopathy-case-report-and-review-of-the-literature
#18
Farhanah Yousaf, Bruce Spinowitz, Chaim Charytan, Marilyn Galler
A 43-year-old Hispanic male without significant previous medical history was brought to emergency department for syncope following a blood draw to investigate a 40 lbs weight loss during the past 6 months associated with decreased appetite and progressive fatigue. The patient also reported a 1-month history of jaundice. On examination, he was hemodynamically stable and afebrile with pallor and diffuse jaundice but without skin rash or palpable purpura. Normal sensations and power in all extremities were evident on neurological exam...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28223040/red-blood-cell-exchange-as-an-approach-for-treating-a-case-of-severe-tacrolimus-overexposure
#19
Valentina Spallanzani, Lucia Bindi, Irene Bianco, Arianna Precisi, Paolo DeSimone, Alessandro Mazzoni, Gianni Biancofiore
Immunosuppressive medication dosing errors are not unfrequent and may present a number of challenges to transplant clinicians. Tacrolimus (TAC) is a widely used immunosuppressant with a narrow therapeutic index and potential severe side effects, including neurotoxicity and kidney injury. We herein report a case of 60-year-old woman who underwent deceased-donor liver transplantation at our center and due to inadvertent TAC overexposure was admitted to the Intensive Care Unit because of severe neurologic impairment, kidney injury and arterial hypotension...
April 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28185296/a-report-of-cerebral-malaria-treated-with-automated-red-blood-cell-exchange
#20
Waseem Q Anani, Gerald P Smith, Mehraboon Irani, Kathleen E Puca
BACKGROUND: Adjunctive automated whole blood or red blood cell exchange (RBCEx) can rapidly decrease malarial hyperparasitemia. Several case reports and series suggest improvement in clinical symptomatology; however, recent Centers of Disease Control and Prevention (CDC) recommendations concluded that RBCEx has no efficacy as an adjunctive therapy. We present a case of mental status changes secondary to cerebral malaria treated with automated RBCEx resulting in rapid and dramatic neurologic improvement...
February 10, 2017: Transfusion
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