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https://www.readbyqxmd.com/read/27921374/efficacy-of-a-novel-granulocyte-monocyte-apheresis-adsorber-device-in-the-treatment-of-inflammatory-bowel-diseases-a-pilot-study
#1
Maria Di Girolamo, Alessandro Sartini, Rosina Critelli, Angela Bertani, Alberto Merighi, Erica Villa
Granulocyte monocyte apheresis (GMA) is a non-pharmacological treatment for inflammatory bowel disease. In our study, we tested a novel GMA adsorber device in terms of clinical efficacy and safety in patients' non-response to pharmacological therapy. Secondary outcomes were the evaluation of adsorber's technical performance, the reduction of inflammatory markers and the improvement of patients' life quality. The prospective study included 18 patients enrolled from 2011 to 2012 with a monitoring of 48 weeks...
December 5, 2016: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/27919366/ldl-apheresis-activates-the-complement-system-and-the-cytokine-network-whereas-pcsk9-inhibition-with-evolocumab-induces-no-inflammatory-response
#2
Knut Tore Lappegård, Terje Enebakk, Hilde Thunhaug, Judith Krey Ludviksen, Tom Eirik Mollnes, Anders Hovland
BACKGROUND: Low-density lipoprotein (LDL) apheresis is an extracorporeal treatment modality used in high-risk coronary patients. It may, however, induce complement activation and downstream inflammation due to bio-incompatibility. OBJECTIVE: We explored changes in soluble inflammatory markers when changing from LDL apheresis to the novel PCSK9 inhibitor evolocumab. METHODS: Three patients with familial hypercholesterolemia participated. Blood samples (EDTA plasma) for complement activation and markers of inflammation were obtained before (baseline) and after LDL apheresis week at 0 and before biweekly administration of evolocumab at weeks 1, 3, 5, and 7...
November 2016: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/27919346/disease-control-via-intensified-lipoprotein-apheresis-in-three-siblings-with-familial-hypercholesterolemia
#3
Christina Taylan, Andrea Schlune, Thomas Meissner, Karolis Ažukaitis, Floris E A Udink Ten Cate, Lutz T Weber
BACKGROUND: Familial hypercholesterolemia (FH), the prevalent monogenic form of hypercholesterolemia, carries the risk of premature coronary heart disease. Lipoprotein-apheresis is established in children with severe dyslipidemia. We present 3 siblings with a negative/negative residual low-density lipoprotein (LDL) receptor mutation (p.Trp577Arg), unresponsive to drug treatment. OBJECTIVE: Intensified lipoprotein-apheresis is well tolerated and results in permanently low lipid values without harming the health-related quality of life in children...
November 2016: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/27903591/platelet-rich-plasma-powder-a-new-preparation-method-for-the-standardization-of-growth-factor-concentrations
#4
Matthias Kieb, Frank Sander, Cornelia Prinz, Stefanie Adam, Anett Mau-Möller, Rainer Bader, Kirsten Peters, Thomas Tischer
BACKGROUND: Platelet-rich plasma (PRP) is widely used in sports medicine. Available PRP preparations differ in white blood cell, platelet, and growth factor concentrations, making standardized research and clinical application challenging. PURPOSE: To characterize a newly standardized procedure for pooled PRP that provides defined growth factor concentrations. STUDY DESIGN: Controlled laboratory study. METHODS: A standardized growth factor preparation (lyophilized PRP powder) was prepared using 12 pooled platelet concentrates (PCs) derived from different donors via apheresis...
November 30, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27893348/cost-utility-and-budget-impact-of-methylene-blue-treated-plasma-compared-to-quarantine-plasma
#5
Joseph B Babigumira, Solomon J Lubinga, Emma Castro, Brian Custer
BACKGROUND: Methylene blue and visible light treatment and quarantine are two methods used to reduce adverse events, mostly infections, associated with the transfusion of fresh-frozen plasma. The objective of this study was to estimate and compare the budget impact and cost-utility of these two methods from a payer's perspective. MATERIALS AND METHODS: A budget impact and cost-utility model simulating the risks of hepatitis B virus, hepatitis C virus, cytomegalovirus, a West Nile virus-like infection, allergic reactions and febrile non-haemolytic transfusion reactions achieved using plasma treated with methylene blue and visible light (MBP) and quarantine plasma (QP) was constructed for Spain...
November 16, 2016: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/27884777/anionic-glycosylated-polysulfone-membranes-for-the-affinity-adsorption-of-low-density-lipoprotein-via-click-reactions
#6
Fei Fang, Xue-Yan Zhu, Chen Chen, Jing Li, Da-Jing Chen, Xiao-Jun Huang
: An anionic glycosylated polysulfone (PSf) membrane was prepared as a high-affinity adsorbent for low-density lipoprotein (LDL). The UV-induced grafting of acrylic acid to the membrane was followed by amidation and a 'thiol-yne' click reaction to achieve glycosylation and sulfonation. Membrane modification was confirmed by attenuated total reflectance-Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. These tests revealed that the chemical compositions of the membranes' surfaces were easily regulated by controlling the 'thiol-yne' click reaction through the feed ratio of 2,3,4,6-tetra-O-acetyl-1-thio-β-d-glucopyranose and sodium 3-mercapto-1-propanesulfonate...
November 21, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27882555/a-randomized-controlled-pilot-study-of-vo2-max-testing-a-potential-model-for-measuring-relative-in-vivo-efficacy-of-different-red-blood-cell-products
#7
Elliott Bennett-Guerrero, Evelyn L Lockhart, Nicholas Bandarenko, Mary L Campbell, Michael J Natoli, Veronika K Jamnik, Timothy R Carter, Richard E Moon
BACKGROUND: Randomized trials, for example, RECESS, comparing "young" (median, 7-day) versus "middle-aged" (median, 28-day) red blood cells (RBCs), showed no difference in outcome. These data are important; however, they do not inform us about the safety and effectiveness of the oldest RBCs, which some patients receive. It may not be feasible to conduct a clinical trial randomizing patients to receive the oldest blood. Therefore, we propose strenuous exercise (VO2 max testing) as a model to study the relative efficacy to increase oxygen delivery to tissue of different RBC products, for example, extremes of storage duration...
November 23, 2016: Transfusion
https://www.readbyqxmd.com/read/27878139/compound-heterozygous-ldlr-variant-in-severely-affected-familial-hypercholesterolemia-patient
#8
Faisal A Al-Allaf, Abdullah Alashwal, Zainularifeen Abduljaleel, Mohiuddin M Taher, Abdellatif Bouazzaoui, Hala Abalkhail, Ahmad F Al-Allaf, Mohammad Athar
Familial hypercholesterolemia (FH) is most commonly caused by mutations in the LDL receptor (LDLR), which is responsible for hepatic clearance of LDL from the blood circulation. We described a severely affected FH proband and their first-degree blood relatives; the proband was resistant to statin therapy and was managed on an LDL apheresis program. In order to find the causative genetic variant in this family, direct exon sequencing of the LDLR, APOB and PCSK9 genes was performed. We identified a compound heterozygous mutation in the proband with missense p...
November 23, 2016: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/27870058/iron-deficiency-and-thrombocytosis
#9
A Holbro, T Volken, A Buser, J P Sigle, J P Halter, J R Passweg, A Tichelli, L Infanti
According to many textbooks, iron deficiency (ID) is associated with reactive thrombocytosis. In this study, we aimed to investigate the correlation between serum ferritin levels and platelet counts in a large cohort of healthy blood donors. We included all whole blood and apheresis donors aged 18 years or older with at least one ferritin measurement and one platelet count performed at the same visit between 1996 and 2014. A total of 130 345 blood counts and ferritin measurements obtained from 22 046 healthy donors were analysed...
November 21, 2016: Vox Sanguinis
https://www.readbyqxmd.com/read/27862253/plateletpheresis-efficiency-and-mathematical-correction-of-software-derived-platelet-yield-prediction-a-linear-regression-and-roc-modeling-approach
#10
José Carlos Jaime-Pérez, Raúl Alberto Jiménez-Castillo, Karina Elizabeth Vázquez-Hernández, Rosario Salazar-Riojas, Nereida Méndez-Ramírez, David Gómez-Almaguer
BACKGROUND: Advances in automated cell separators have improved the efficiency of plateletpheresis and the possibility of obtaining double products (DP). We assessed cell processor accuracy of predicted platelet (PLT) yields with the goal of a better prediction of DP collections. STUDY DESIGN AND METHODS: This retrospective proof-of-concept study included 302 plateletpheresis procedures performed on a Trima Accel v6.0 at the apheresis unit of a hematology department...
November 11, 2016: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/27861967/drone-transportation-of-blood-products
#11
Timothy Amukele, Paul M Ness, Aaron A R Tobian, Joan Boyd, Jeff Street
BACKGROUND: Small civilian unmanned aerial vehicles (drones) are a novel way to transport small goods. To the best of our knowledge there are no studies examining the impact of drone transport on blood products, describing approaches to maintaining temperature control, or component physical characteristics during drone transport. STUDY DESIGN AND METHODS: Six leukoreduced red blood cell (RBC) and six apheresis platelet (PLT) units were split using sterile techniques...
November 11, 2016: Transfusion
https://www.readbyqxmd.com/read/27861957/improved-donor-safety-in-high-volume-apheresis-collections
#12
Ralph R Vassallo, Marjorie D Bravo, Hany Kamel
BACKGROUND: Separators use 1960s sex-based nomograms to estimate apheresis donor blood volume and to calculate the 15% maximum extracorporeal and collection volumes. As US body habitus changes, proportional overestimation of the maximum safe collection volume may become clinically significant with large-volume collections. We correlated 2 years of vasovagal reaction (VVR) data with 148,416 Trima apheresis procedure parameters to identify trends. STUDY DESIGN AND METHODS: Only platelet/plasma with or without red blood cell (RBC) procedures yielded collection volumes of at least 900 mL with no saline replacement...
November 10, 2016: Transfusion
https://www.readbyqxmd.com/read/27859540/the-impact-of-citrate-concentration-on-adhesion-of-platelets-and-leukocytes-to-adsorbents-in-whole-blood-lipoprotein-apheresis
#13
René Weiss, Michael B Fischer, Viktoria Weber
Lipoprotein apheresis is applied to deplete low density lipoprotein and other apolipoprotein B containing lipoproteins in patients with severe familial hypercholesterolemia, hypertriglyceridemia associated pancreatitis, or lipoprotein (a)-hyperlipoproteinemia. Anticoagulation of the extracorporeal circuit may influence cellular activation, as evidenced by a reduction of inflammatory parameters during regional citrate anticoagulation with acid citrate dextrose A (ACD-A) commonly used in whole blood lipid apheresis...
November 17, 2016: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/27859382/value-of-calcium-and-phosphate-in-a-bicarbonate-containing-platelet-additive-solution-with-low-plasma-levels-in-maintaining-key-in-vitro-platelet-storage-parameters
#14
Andrey Skripchenko, Annette Turgeon, Dedeene Thompson-Montgomery, Helen Awatefe, Stephen J Wagner
BACKGROUND: Use of recently developed platelet (PLT) additive solutions (PAS) with 5% plasma levels may reduce the frequency and/or severity of transfusion reactions attributed to plasma. PLTs suspended in bicarbonate-containing PAS-5 with 5% plasma levels can maintain key PLT parameters during 7-day storage. This study evaluates the role of calcium and phosphate, as constituents of PAS-5, in maintaining PLT parameters. STUDY DESIGN AND METHODS: An Amicus apheresis PLT unit (n = 13) was equally divided into four 60-mL aliquots in CF-250 polyolefin bags...
November 17, 2016: Transfusion
https://www.readbyqxmd.com/read/27859332/patients-outcome-after-rescue-plerixafor-administration-for-autologous-stem-cell-mobilization-a-single-center-retrospective-analysis
#15
Silvia Spoerl, Robert Peter, Dagmar Wäscher, Katharina Götze, Mareike Verbeek, Christian Peschel, Angela M Krackhardt
BACKGROUND: Plerixafor is predominantly used for patients mobilizing inadequate stem cell numbers for autologous transplantation after stimulation with granulocyte-colony-stimulating factor (G-CSF). STUDY DESIGN AND METHODS: We here report on 300 patients undergoing stem cell mobilization with G-CSF, among them 36 poor mobilizers (CD34+ cell counts < 50 × 10(6) /L blood) receiving G-CSF alone and 49 receiving G-CSF in combination with plerixafor for rescue intervention...
November 18, 2016: Transfusion
https://www.readbyqxmd.com/read/27859323/no-association-between-frequent-apheresis-donation-and-risk-of-fractures-a-retrospective-cohort-analysis-from-sweden
#16
Katrine Grau, Senthil K Vasan, Klaus Rostgaard, Walter Bialkowski, Rut Norda, Henrik Hjalgrim, Gustaf Edgren
BACKGROUND: Citrate anticoagulation during apheresis induces transient alterations in calcium homeostasis. It is unknown whether the repeated, transient alterations in calcium homeostasis experienced by repeated apheresis donors affects bone turnover to increase fracture risk. Our aim was to investigate the risk of osteoporotic and nonosteoporotic fracture among voluntary, frequent apheresis donors. STUDY DESIGN AND METHODS: All apheresis donors were identified from the Scandinavian Donations and Transfusions database (SCANDAT2), which includes information on over 1...
November 18, 2016: Transfusion
https://www.readbyqxmd.com/read/27859322/granulocytapheresis-with-modified-fluid-gelatin-versus-high-molecular-weight-hydroxyethyl-starch-a-matched-pair-analysis
#17
Katharina Dullinger, Irene Pamler, Andreas Brosig, Morad Mohrez, Viola Hähnel, Robert Offner, Frauke Dormann, Christine Becke, Ernst Holler, Norbert Ahrens
BACKGROUND: Granulocyte apheresis requires a sedimentation agent. Usually, hydroxyethyl starch (HES) is administered to donors for this purpose and, as granulocyte concentrate (GC) ingredient, also to patients. Authorities recently recommended suspending market authorizations for starch-containing products due to side effects. Therefore, we tested the efficacy of modified fluid gelatin (MFG, Gelafundin 4%) versus hetastarch (Hespan) for GC apheresis. STUDY DESIGN AND METHODS: This retrospective matched-pair analysis compared MFG- and hetastarch-derived GCs...
November 10, 2016: Transfusion
https://www.readbyqxmd.com/read/27858246/sequential-therapy-consisting-of-glucocorticoid-infusions-followed-by-granulocyte-monocyte-absorptive-apheresis-in-patients-with-severe-alcoholic-hepatitis
#18
Kazuhiro Watanabe, Yoshihito Uchida, Kayoko Sugawara, Kayoko Naiki, Mie Inao, Nobuaki Nakayama, Satoshi Mochida
BACKGROUND: Activated leukocytes infiltrating the liver contribute to the provocation of alcoholic hepatitis. Glucocorticoid induces the demargination of leukocytes from the hepatic sinusoids, whereas granulocyte-monocyte absorptive apheresis (GMA) removes leukocytes from the circulation. Thus, the usefulness of a sequential therapy consisting of glucocorticoid infusions followed by GMA was evaluated in patients with severe alcoholic hepatitis. METHODS: Patients with severe alcoholic hepatitis received intravenous injections of methylprednisolone (1,000 mg/day) for 3 or 4 days, and then GMA was performed every day for 3 days...
November 17, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27849761/117-a-pediatric-intensivist-directed-apheresis-program-from-conception-to-fruition
#19
Bree Kramer, Omar Al-Ibrahim, Hari Gourabathini, Ryan Breuer, Christopher Heard
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27846612/effect-of-high-dose-plerixafor-on-cd34-cells-mobilization-in-healthy-stem-cell-donors-results-of-a-randomized-crossover-trial
#20
Jeremy Pantin, Enkhtsetseg Purev, Xin Tian, Lisa Cook, Theresa Donohue-Jerussi, Elena Cho, Robert Reger, Matthew Hsieh, Hanh Khuu, Gary Calandra, Nancy L Geller, Richard W Childs
Hematopoietic stem cells can be mobilized from healthy donors using single-agent plerixafor without G-CSF, and following allogeneic transplantation, can result in sustained donor derived hematopoiesis. However, when a single dose of plerixafor is administered at a conventional 240 mg/kg dose, approximately one third of donors will fail to mobilize the minimally acceptable dose of CD34+ cells needed for allogeneic transplantation. We conducted an open-label, randomized trial to assess the safety and activity of high-dose (480 mg/kg) plerixafor in CD34+ cell mobilization in healthy donors...
October 20, 2016: Haematologica
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