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Red blood cell exchange

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https://www.readbyqxmd.com/read/29139162/epidemiology-of-therapeutic-apheresis-with-a-multidisciplinary-approach-at-a-high-volume-pediatric-center
#1
Rachel M Sirignano, Matthew L Paden, Ross Fasano, Erin K Meyer
INTRODUCTION: Therapeutic apheresis (TA) is used inconsistently in pediatric populations. We seek to define our multidisciplinary institutional practice. METHODS: We conducted a retrospective chart review of patients receiving TA from January 1, 2012 through October 31, 2015. Data collected included demographics, American Society of Apheresis (ASFA) indication, complications, and mortality. RESULTS: Over 46 months, 1198 TA procedures were conducted on 289 patients ranging in age from 5 months to 21 years with weights ranging from 4...
November 15, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/29130518/automated-red-blood-cell-exchange-in-preparation-for-filgrastim-mobilization-of-autologous-peripheral-blood-hematopoietic-progenitor-cells-in-a-patient-with-sickle-cell-anemia
#2
Yong Zhao, Jeffrey A Bailey, Jeanne Linden, Patricia St Pierre, Jan Cerny, Michelle Vauthrin, Mindy Greene, Robert Weinstein
Increasing survival of patients with sickle cell anemia (SCA) well into adulthood results in a rising likelihood of developing hematological malignancy. High-dose chemotherapy with autologous hematopoietic progenitor cell (HPC) rescue is standard of care for several hematological malignancies, but the risk of severe or life-threatening vaso-occlusive phenomena during filgrastim mobilization of HPC for collection poses a potential barrier to this approach. We report the use of automated red cell exchange in preparation for filgrastim mobilization in a patient with homozygous SCA...
November 11, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/29111410/the-z-spectrum-from-human-blood-at-7t
#3
Simon M Shah, Olivier E Mougin, Andrew J Carradus, Nicolas Geades, Richard Dury, William Morley, Penny A Gowland
Chemical Exchange Saturation Transfer (CEST) has been used to assess healthy and pathological tissue in both animals and humans. However, the CEST signal from blood has not been fully assessed. This paper presents the CEST and nuclear Overhauser enhancement (NOE) signals detected in human blood measured via z-spectrum analysis. We assessed the effects of blood oxygenation levels, haematocrit, cell structure and pH upon the z-spectrum in ex vivo human blood for different saturation powers at 7T. The data were analysed using Lorentzian difference (LD) model fitting and AREX (to compensate for changes in T1), which have been successfully used to study CEST effects in vivo...
October 27, 2017: NeuroImage
https://www.readbyqxmd.com/read/29070138/-identification-of-a-rare-ael05-b101-subtype-and-selection-of-blood-transfusion-strategy
#4
Qiang Feng, Jian-Yu Xiao, Min-Hui Wu, Yue-Xiang Zhang, Yong Xia, Xin Mu, Qing Chen
OBJECTIVE: To explore the mechanism of ABO discrepancy in a patient by ABO genotyping and the reasonable blood transfusion strategy. METHODS: Routine serological test was carried out to analyze ABO blood group. The presence of the blood group determinants on the red blood cells were determined by adsorption-elution test. Exons 1-7 and adjacent introns of the ABO gene were amplified by PCR and sequenced. RESULTS: The patient showed ABO forward and reverse typing discrepancy...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/29066970/hupresin-retains-binding-capacity-for-butyrylcholinesterase-and-acetylcholinesterase-after-sanitation-with-sodium-hydroxide
#5
Seda Onder, Emilie David, Ozden Tacal, Lawrence M Schopfer, Oksana Lockridge
Hupresin is a new affinity resin that binds butyrylcholinesterase (BChE) in human plasma and acetylcholinesterase (AChE) solubilized from red blood cells (RBC). Hupresin is available from the CHEMFORASE company. BChE in human plasma binds to Hupresin and is released with 0.1 M trimethylammonium bromide (TMA) with full activity and 10-15% purity. BChE immunopurified from plasma by binding to immobilized monoclonal beads has fewer contaminating proteins than the one-step Hupresin-purified BChE. However, when affinity chromatography on Hupresin follows ion exchange chromatography at pH 4...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28990205/developing-a-protocol-for-normothermic-ex-situ-limb-perfusion
#6
Eliana F R Duraes, Maria Madajka, Russell Frautschi, Basem Soliman, Cagri Cakmakoglu, Addison Barnett, Kashyap Tadisina, Qiang Liu, Patrick Grady, Cristiano Quintini, Toshihiro Okamoto, Francis Papay, Antonio Rampazzo, Bahar Bassiri Gharb
BACKGROUND: Ischemia time represents a significant limitation for successful extremity transplantation because of the rapid deterioration of ischemic muscle. Normothermic ex-situ preservation is an emergent method to prolong the organ viability following procurement, by replicating the physiologic conditions. The aim of this study was to develop an ex-situ normothermic limb perfusion system to preserve the viability and function of porcine limbs for 12 hours following procurement. METHODS: A total of 18 swine limbs were perfused...
October 9, 2017: Microsurgery
https://www.readbyqxmd.com/read/28981948/-identification-of-a-bw14-subtype-and-exploration-for-its-molecular-basis
#7
Qing Chen, Ping Li, Jianyu Xiao, Le Lu, Yan Ye, Shuya Wang, Chengyin Huang, Yunlong Zhuang
OBJECTIVE: To identify a rare subtype of the ABO blood group system and explore its molecular basis. METHODS: Based on a standard serological assay, ABO subtype and haplotype were analyzed through PCR amplification of the 7 exons and adjacent introns of the ABO gene and TA clone sequencing. RESULTS: Forward typing showed a B type, while reverse typing demonstrated an extremely weak anti-B on routine gel analysis, which indicated a forward and reverse typing discrepancy...
October 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/28972944/delayed-development-of-hemolytic-anemia-with-fragmented-red-blood-cells-and-cardiac-and-renal-impairments-after-high-dose-chemotherapy-and-autologous-hematopoietic-stem-cell-transplantation-for-malignant-lymphoma
#8
Futoshi Iioka, Yusuke Toda, Yuya Nagai, Takashi Akasaka, Daiki Shimomura, Katsuyo Tsuda, Fumihiko Nakamura, Hitoshi Ohno
Among 42 consecutive patients with malignant lymphoma who underwent high-dose chemotherapy (HDC) followed by autologous hematopoietic stem cell transplantation (AHSCT), 5 developed hemolytic anemia with fragmented red blood cells (HA-FrRBCs) on days 87-125 (median 107) of AHSCT. Nadir Hb levels ranged between 5.0 and 6.4 g/dL with 2.2-5.6% FrRBCs. All patients developed grade ≥3 hypoxia and heart failure, and 4 developed grade ≥3 hypertension. The ejection fraction of the left ventricle assessed by echocardiography was significantly reduced in 3 patients...
October 4, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28969140/therapeutic-plasma-exchange-an-emerging-treatment-modality-in-patients-with-neurologic-and-non-neurologic-diseases
#9
Shreedevi S Bobati, Karkal Ravishankar Naik
INTRODUCTION: Therapeutic Plasma Exchange (TPE) is a procedure in which the patient's blood is passed through an apheresis machine, where the filtered plasma is removed and discarded with reinfusion of red blood cells along with replacement fluid such as plasma or albumin in to the patient. We present our experience with TPE in treatment of various neurologic and non-neurologic diseases. AIM: To evaluate TPE as primary therapy or as a first-line adjunct to other initial therapies as mentioned by American Society for Apheresis (ASFA)...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28961212/a-comprehensive-review-of-our-current-understanding-of-red-blood-cell-rbc-glycoproteins
#10
REVIEW
Takahiko Aoki
Human red blood cells (RBC), which are the cells most commonly used in the study of biological membranes, have some glycoproteins in their cell membrane. These membrane proteins are band 3 and glycophorins A-D, and some substoichiometric glycoproteins (e.g., CD44, CD47, Lu, Kell, Duffy). The oligosaccharide that band 3 contains has one N-linked oligosaccharide, and glycophorins possess mostly O-linked oligosaccharides. The end of the O-linked oligosaccharide is linked to sialic acid. In humans, this sialic acid is N-acetylneuraminic acid (NeuAc)...
September 29, 2017: Membranes
https://www.readbyqxmd.com/read/28959352/production-of-erythropoietin-specific-polyclonal-antibodies
#11
Kourosh Maboudi, Seyedeh Marzieh Hosseini, Mina Sepahi, Hashem Yaghoubi, Shahin Hadadian
BACKGROUND: Erythropoietin, as a principal hormone promotes red blood cell production in bone marrow. Varieties of erythropoietin biosimilar are being produced by recombinant DNA technology in cell cultures. The detection or quantifi cation of these molecules are being performed by diff erent methods which some of theme such as Western blot and enzymelinked immunosorbent assay (ELISA) require specifi c antibodies. High cost, inappropriate shipping (cold chain failures), reduced sensitivity and thus poor detection performance are common pitfalls of using commercial kits for performing immunological tests...
March 2017: Iranian journal of biotechnology
https://www.readbyqxmd.com/read/28955123/evaluation-of-human-nonmercaptalbumin-as-a-marker-for-oxidative-stress-and-its-association-with-various-parameters-in-blood
#12
Rie Masudo, Keiko Yasukawa, Takahiro Nojiri, Naoyuki Yoshikawa, Hironori Shimosaka, Shinji Sone, Yumiko Oike, Akemi Ugawa, Tsutomu Yamazaki, Kentaro Shimokado, Yutaka Yatomi, Hitoshi Ikeda
Oxidative status of albumin was not a useful biomarker for oxidative stress in practical use due to time-consuming measuring method. We evaluated oxidized, human nonmercaptalbumin measured more quickly than ever by a novel method using anion-exchange HPLC. In 60 subjects taking a general health examination, mean serum human nonmercaptalbumin level was 25.1 ± 3.0% with no gender difference but positive correlation with age. There were no links between human nonmercaptalbumin and C-reactive protein, γ-glutamyltransferase or iron, reportedly associated with oxidative stress...
September 2017: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/28942500/evaluation-of-immunostimulatory-and-immunotherapeutic-effects-of-tropical-mushroom-lentinus-edodes-against-eimeriasis-in-chicken
#13
Muhammad Irfan Ullah, Masood Akhtar, Mian Muhammad Awais, Muhammad Irfan Anwar, Kashfa Khaliq
Mushrooms (Lentinus edodes) were processed for hot water (HWE), methanolic (ME), and polysaccharide (PSE) extracts. Polysaccharides were isolated through ion exchange (DEAE cellulose) and size exclusion (Sephadex G-100) chromatography. Monosaccharides including maltose (0.282%), glucose (0.113%), and mannose (0.451%) were identified, qualitatively and quantitatively, from the isolated polysaccharides through high-performance liquid chromatography. The whole study was divided into two experiments. Experiment 1 was meant for the evaluation of HWE and ME; whereas, experiment 2 was meant for the evaluation of PSE for immunostimulatory and immunotherapeutic activities...
September 24, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28928925/the-fortuitous-repair-of-a-common-bile-duct-injury-following-placement-of-a-percutaneous-transhepatic-cholangiogram-catheter
#14
Branum G Griswold, Jared A White
Common bile duct injuries are associated with a high rate of morbidity and mortality and are discussed frequently in the literature. These injuries may be difficult to diagnose intraoperatively and are often challenging to repair, necessitating referral to hepatobiliary surgery specialists at academic institutions. This case report highlights the management of a completely disrupted common bile duct identified post-operatively using a percutaneous transhepatic cholangiography (PTC) catheter to bridge the gap between the proximal and distal ductal injury prior to operative repair...
September 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28919343/characterizing-pathology-in-erythrocytes-using-morphological-and-biophysical-membrane-properties-relation-to-impaired-hemorheology-and-cardiovascular-function-in-rheumatoid-arthritis
#15
Oore-Ofe O Olumuyiwa-Akeredolu, Prashilla Soma, Antoinette V Buys, Legesse Kassa Debusho, Etheresia Pretorius
The inflammatory burden of the complex rheumatoid arthritis (RA) disease affects several organ-systems, including rheological properties of blood and its formed elements. Red blood cells (RBCs) are constantly exposed to circulating dysregulated inflammatory molecules that are co-transported within the vasculature; and their membranes may be particularly vulnerable to the accompanying oxidative stress. In the current study, we investigate biophysical and ultrastructural characteristics of RBCs obtained from a cohort of patients using atomic force microscopy (AFM), scanning electron microscopy (SEM) and confocal microscopy (CM)...
December 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28854515/intravenous-immunoglobulin-in-the-management-of-a-rare-cause-of-hemolytic-disease-of-the-newborn-anti-sara-antibodies
#16
Rohini Venkataraman, Kamran Yusuf
Hemolytic disease of newborn (HDN) is a condition that develops in a fetus, when the IgG molecules produced by the mother pass through the placenta and attack the fetal red blood cells. HDN can occur due to Rh and ABO incompatibilities between the mother and the fetus as well as due to other allo-immune antibodies belonging to Kell (K and k), Duffy (Fya), Kidd (Jka and Jkb), and MNS (M, N, S, and s) systems. Role of intravenous immunoglobulin in management of HDN is not clear.SARA red blood cell antigen, first discovered in 1990 is a low frequency antigen...
2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28840609/red-blood-cell-alloimmunization-in-pregnancy-during-the-years-1996-2015-in-iceland-a-nation-wide-population-study
#17
Gunnar Bollason, Hulda Hjartardottir, Thorbjorn Jonsson, Sveinn Gudmundsson, Sveinn Kjartansson, Anna Margret Halldorsdottir
BACKGROUND: Red blood cell (RBC) alloimmunization during pregnancy is still a major problem. Historically, anti-D antibodies are most likely to cause severe hemolysis, but other antibodies are also important. In Iceland, postnatal RhIg prophylaxis was implemented in 1969, universal RBC antibody screening was implemented in 1978, but antenatal RhIg prophylaxis is not yet routine. STUDY DESIGN AND METHODS: This nation-wide population study gathered data on alloimmunized pregnancies in Iceland between 1996 and 2015...
August 24, 2017: Transfusion
https://www.readbyqxmd.com/read/28802567/nano-sized-and-other-improved-reporters-for-magnetic-resonance-imaging-of-angiogenesis
#18
Simonetta Geninatti Crich, Enzo Terreno, Silvio Aime
Magnetic Resonance Imaging (MRI) enables to provide anatomical, functional and molecular information of pathological angiogenesis when used with properly tailored imaging probes. Functional studies have been the domain of Dynamic Contrast Enhancement (DCE) -MRI protocols from which it is possible to extract quantitative estimations on key parameters such as the volumes of vascular and extracellular compartments and the rates of the bidirectional exchange of the imaging reporters across the endothelial barrier...
August 9, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/28760470/improved-approach-with-subcostal-exchange-of-the-heartmate-ii-left-ventricular-assist-device-difference-in-on-and-off-pump
#19
COMPARATIVE STUDY
Ann C Gaffey, Carol W Chen, Jennifer J Chung, Emily Phillips, Joyce Wald, Matthew L Williams, David W Low, Michael A Acker, Pavan Atluri
BACKGROUND: The HeartMate II (St. Jude Medical, Inc, St. Paul, MN [previously Thoratec]) left ventricular assist device (LVAD) exchange has traditionally involved a redo sternotomy. Alternate minimally invasive subcostal approaches have the advantage of avoiding sternal reentry, excessive bleeding, and prolonged recovery. METHODS: This retrospective review included patients who underwent an exchange from May 2009 to March 2016. The patients were divided into three cohorts: (1) redo sternotomy, (2) subcostal approach involving cardiopulmonary bypass (CPB) (ON-CPB SC), and (3) subcostal approach off the CPB pump (OFF-CPB SC)...
November 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28735973/in-vitro-study-on-the-regulation-of-cellular-mrna-levels-by-changes-in-transcription-rate-and-transcript-stability-in-fish-red-blood-cells
#20
Miriam Götting, Mikko Nikinmaa
The interplay of transcriptional and post-transcriptional processes in the regulation of gene expression has been extensively studied in mammals but little is known in other vertebrates so far. Most non-mammalian vertebrates are faced with environmental cues and stressors distinct from those experienced by mammals and thus it is likely that the gene expression strategies differ from those of mammals. Here we performed experiments to study in vitro the various levels of gene expression regulation in nucleated fish red blood cells...
November 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
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