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Transfusion and Apheresis Science

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https://www.readbyqxmd.com/read/28089407/the-world-apheresis-association-registry
#1
REVIEW
Bernd Stegmayr
No abstract text is available yet for this article.
January 3, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28073690/citrate-pathophysiology-and-metabolism
#2
REVIEW
Mehran Monchi
By chelating ionized calcium, citrate allows extracorporeal circuit anticoagulation without a bleeding risk for the patient. Citrate anticoagulation is also associated with a reduced activation of leucocytes and platelets. Citrate clearance by citric acid cycle (Krebs cycle) is not modified by renal failure, but is reduced by about 50% in patients with cirrhosis. Toxic effects of citrate result from a decrease in plasma ionized calcium of the patient. The first side effect is a prolongation of the QT interval...
December 30, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28089411/apheresis-medicine-education-in-the-united-states-of-america-state-of-the-discipline
#3
REVIEW
Monica B Pagano, Gay Wehrli, Darlene Cloutier, Eileen Galvin Karr, Ileana Lopez-Plaza, Joseph Schwartz, Chester Andrzejewski, Jeffrey L Winters, Edward C C Wong, Yanyun Wu, Nicole D Zantek
Apheresis Medicine is a medical discipline that involves a variety of procedures (based on the targeted component to be removed or collected), indications (therapeutic vs. donation), and personnel (operators, management, and medical oversight). Apheresis services are accredited and/or regulated by a number of agencies and organizations. Given the complexity and the heterogeneity of apheresis services, it has been particularly challenging to formulate educational goals and define curriculums that easily cover all aspects of Apheresis Medicine...
December 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28089410/microparticle-detection-to-guide-platelet-management-for-the-reduction-of-platelet-refractoriness-in-children-a-study-proposal
#4
REVIEW
Peter Kanzler, Andrew Mahoney, Gerda Leitner, Volker Witt, Elisabeth Maurer-Spurej
Microparticles have been shown to shed from a variety of viable cells as a consequence of inflammatory processes, activation or physical stress. Seventy to 90% of circulating microparticles are thought to be platelet-derived. The content of microparticles in blood collected from normal blood donors is highly variable and transfers into the final blood component. Elevated microparticle content (MPC) in donor blood might indicate an asymptomatic clinical condition of the donor which might affect the transfusion recipient, particularly pediatric patients...
December 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28089409/the-italian-registry-of-therapeutic-apheresis-2015
#5
REVIEW
Giustina De Silvestro
Data collection on apheresis activities in Italy throughout 2015 including techniques, clinical indications and adverse effects was performed by means of a SidEM model questionnaire (aggregate data). These data provided by 67 Apheresis Units from 17 Italian regions, albeit rough, are sufficiently informative, mainly in comparison with previous surveys on these statistics. PEx has been the most frequent technique for plasma removal/treatment (11787 procedures) followed by LDL-apheresis (927 procedures). ECP/photopheresis has been the most frequent cytapheresis procedure: 6,606 session, mainlyby using the off-line technique...
December 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28089408/the-various-assays-for-measuring-activity-states-of-factor-viia-in-plasma-and-therapeutic-products-diagnostic-value-and-analytical-usefulness-in-various-pathophysiological-states
#6
REVIEW
Jean Amiral, Claire Dunois, Cédric Amiral, Jerard Seghatchian
The key coagulation factor FVII, and its activated form FVIIa, present a major interest for their role at the initiation phase of blood coagulation, and because they can activate all blood coagulation cascade, through the extrinsic, but also the intrinsic pathway. Blood activation initiated through FVII is first presented, as it is understood nowadays. Measurement of FVII and FVIIa were of main interest for epidemiological studies, but FVIIa contribution to assay results was only deduced. The introduction of specific FVIIa assays, functional or immunoassays, allowed measuring directly FVIIa without any interference of non-activated FVII, or other coagulation factors or their activated forms...
December 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28041822/effect-of-leukapheresis-on-blood-coagulation-in-patients-with-hyperleukocytic-acute-myeloid-leukemia
#7
Andry Van de Louw
INTRODUCTION: Leukapheresis has been proposed to reduce white blood cell (WBC) count in hyperleukocytic acute myeloid leukemia (AML). However, no survival benefit has been proven and leukapheresis can potentially affect coagulation and worsen bleeding and disseminated intravascular coagulation (DIC). We analyzed the effect of leukapheresis on coagulation tests in a cohort of hyperleukocytic AML patients. METHODS: Retrospective chart review of hyperleukocytic AML patients who underwent leukapheresis between 2003 and 2014...
December 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28034547/how-to-manage-poor-mobilizers-for-high-dose-chemotherapy-and-autologous-stem-cell-transplantation
#8
REVIEW
Pinar Ataca Atilla, Sule Mine Bakanay Ozturk, Taner Demirer
Today, peripheral blood stem cells are the preferred source of stem cells over bone marrow. Therefore, mobilization plays a crutial role in successful autologous stem cell transplantation. Poor mobilization is generally defined as failure to achieve the target level of at least 2×10(6) CD34(+) cells/kg body weight. There are several strategies to overcome poor mobilization: 1) Larger volume Leukapheresis (LVL) 2) Re-mobilization 3) Plerixafor 4) CM+Plerixafor (P)+G-CSF and 5) Bone Marrow Harvest. In this review, the definitions of successful and poor mobilization are discussed...
December 26, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28063760/a-novel-nonsense-mutation-in-rhag-gene-responsible-for-rhnull-phenotype-in-a-chinese-individual
#9
Li Hou, Qi-Dong Yan, Li Tian
BACKGROUND: Rhnull is a rare autosomal recessive phenotype, which is characterized by the lack of Rh antigen expression on the red blood cells (RBCs). Rhnull of the regulator type is caused by RHAG mutation. In this study, a novel nonsense mutation in RHAG gene was identified in a Chinese Rhnull individual. OBJECTIVES AND METHODS: Rh phenotypes of the Rhnull individual and his family members were typed by standard serological methods. DNA sequences of all ten exons of RHAG gene were analyzed using genomic DNA by polymerase chain reaction (PCR) and direct-sequencing...
December 21, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28041821/nat-positivity-in-seronegative-voluntary-blood-donors-from-western-india
#10
Kanchan K Mishra, Apeksha Trivedi, Sheetal Sosa, Krima Patel, Kanjaksha Ghosh
BACKGROUND AND OBJECTIVES: Prevalence and composition of Hepatitis B, Hepatitis C and HIV-1, NAT positive but seronegative voluntary blood donors from western part of India is yet to be documented. MATERIAL AND METHODS: Over last 2 1/2 years all the seronegative voluntary blood donors were tested using 10 minipools on a semiautomated NAT testing platform. The positively tested donors were followed up for at least five months for development of seropositivity. RESULTS: 79532 seronegative donations were tested by 10 minipool (MP) NAT leading to 51 positive sample (44 Hep B, 5 HIV 1 and Hep C positive)...
December 13, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28040400/emerging-strategies-of-blood-group-genotyping-for-patients-with-hemoglobinopathies
#11
REVIEW
A Belsito, K Magnussen, C Napoli
Red cell alloimmunization is a serious problem in chronically transfused patients. A number of high-throughput DNA assays have been developed to extend or replace traditional serologic antigen typing. DNA-based typing methods may be easily automated and multiplexed, and provide reliable information on a patient. Molecular genotyping promises to become cheaper, being not dependent on serologic immunoglobulin reagents. Patients with hemoglobinopathies could benefit from receiving extended genomic typing. This could limit post transfusional complications depending on subtle antigenic differences between donors and patients...
December 9, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28027853/a-haemovigilance-team-provides-both-significant-financial-and-quality-benefits-in-a-university-hospital
#12
Ine Decadt, Els Costermans, Maai Van de Poel, Katrien Kesteloot, Timothy Devos
BACKGROUND: Haemovigilance is the process of surveillance of blood transfusion procedures including unexpected hazards and reactions during the transfusion pathway in both donors and recipients. The haemovigilance team aims to increase blood transfusion safety and to decrease both morbidity and mortality in donors and recipients. The team collects data about transfusion reactions and incidents, instructs the involved health workers and assures the tracing of blood components. The haemovigilance team at the University Hospitals Leuven has played a pioneering role in the development of haemovigilance in Belgium Although the literature about safety and quality improvements by haemovigilance systems is abundant, there are no published data available measuring their financial impact in a hospital...
December 7, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28007431/quantifying-in-vivo-murine-antigen-specific-t-cell-responses-without-requirement-for-prior-knowledge-of-antigen-identity
#13
Nour Kibbi, Enping Hong, Harib Ezaldein, Douglas Hanlon, Tarek Fahmy, Richard Edelson
Extracorporeal Photochemotherapy (ECP) is a widely applied anti-cancer immunotherapy for patients with cutaneous T cell lymphoma (CTCL). By using apoptotic malignant cells as a source of patient-specific tumor antigen, it enables clinically relevant and curative anti-CTCL immunity, with potential efficacy in other tumors. Currentmethods to track patient-specific responses are tedious, and new methods are needed to assess putative global immunity. We developed a clinically practical method to assess antigen-specific T cell activation that does not rely on knowledge of the particular antigen, thereby eliminating the requirement for patient-specific reagents...
November 30, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27913225/study-on-the-immunological-safety-of-universal-plasma-in-the-chinese-population-in-vitro
#14
Guanyi Chen, Liguo Zhu, Shufang Wang, Yuan Zhuang, Yang Yu, Deqing Wang
BACKGROUND: The prepared procedure for universal plasma in the Chinese population has been developed. However, the immunological safety with the level of antibodies, soluble immune complexes and complements is necessary to investigate. METHODS: The universal plasma was pooled at the optimal ratio of A:B:AB = 6:2.5:1.5 at 22 °C for 1 hour. The titer of IgM antibodies was detected by saline agglutination, and the titer of IgG antibodies was detected by a Polybrene test after IgM destroyed by 2-mereaptoethanol...
November 14, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27887885/the-watching-eyes-phenomenon-and-blood-donation-does-exposure-to-pictures-of-eyes-increase-blood-donation-by-young-adults
#15
Cécile Sénémeaud, Camille Sanrey, Nathalie Callé, Candice Plainfossé, Alexandra Belhaire, Patrice Georget
This study examined the effectiveness of exposure to a "watching-eyes image" in increasing blood donation rates among young people, a segment of the population that is particularly underrepresented among blood donors. Participants were 454 first-year university students, each of who was given a blood-donation flyer at the beginning of a lecture. Participants were randomly assigned to one of two conditions depending on whether the flyer they received bore a picture of eyes (experimental condition) or a neutral picture (control condition)...
November 14, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27839965/evaluation-of-wound-healing-in-diabetic-foot-ulcer-using-platelet-rich-plasma-gel-a-single-arm-clinical-trial
#16
Mohammad Hossein Mohammadi, Behnam Molavi, Saeed Mohammadi, Mohsen Nikbakht, Ashraf Malek Mohammadi, Shayan Mostafaei, Amir Hossein Norooznezhad, Ali Ghorbani Abdegah, Ardeshir Ghavamzadeh
The aim of the present study was to evaluate the effectiveness of using autologous platelet-rich plasma (PRP) gel for treatment of diabetic foot ulcer (DFU) during the first 4 weeks of the treatment. In this longitudinal and single-arm trial, 100 patients were randomly selected after meeting certain inclusion and exclusion criteria; of these 100 patients, 70 (70%) were enrolled in the trial. After the primary care actions such as wound debridement, the area of each wound was calculated and recorded. The PRP therapy (2 mL/cm(2) of ulcers) was performed weekly until the healing time for each patient...
November 2, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27839964/fatal-alloimmune-thrombocytopenia-due-to-anti-hla-alloimmunization-in-a-twin-pregnancy-a-very-infrequent-complication-of-assisted-reproduction
#17
Eva Meler, Roser Porta, Carme Canals, Bernat Serra, Miguel Lozano
The most frequently involved antigen in severe fetal and neonatal alloimmune thrombocytopenia (FNAIT) is the human platelet antigen 1a. Platelets express the HLA-A and B antigens on their membrane and some studies report that maternal anti-HLA class I antibody can also cause FNAIT. We report here a very unusual case of a first twin pregnancy produced in vitro by oocyte and semen donation where the mother developed markedly elevated HLA antibodies, in the absence of anti-platelet or anti-neutrophil antibodies, that provoked in one of the twins a profound thrombocytopenia and intracranial hemorrhage and a mild thrombocytopenia and neutropenia in the second twin lasting until the fourth month of life...
November 2, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27839968/post-donation-telephonic-interview-of-blood-donors-providing-an-insight-into-delayed-adverse-reactions-first-attempt-in-india
#18
Aseem K Tiwari, Geet Aggarwal, Ravi C Dara, Dinesh Arora, Khushboo Srivastava, Vimarsh Raina
BACKGROUND: Blood donor experiences both immediate adverse reactions (IAR) and delayed adverse reactions (DAR). With limited published data available on the incidence of DAR, a study was conducted to estimate incidence and profile of DAR through telephonic interview. MATERIALS AND METHODS: Study was conducted over a 45-day period for consecutive volunteer whole blood donations at tertiary care hospital. Donors were divided into first-time, repeat and regular and were monitored for IAR...
October 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27825640/transfusion-transmitted-dengue-one-donor-infects-two-patients
#19
Farheen Karim, Nadia Nasir, Bushra Moiz
Dengue virus can be transmitted via blood transfusion. We report an interesting case where two surgical patients developed possible transfusion transmitted dengue when transfused blood components of the same donor. Dengue remains a threat to blood supply especially in endemic region.
October 29, 2016: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/27839966/single-nucleotide-polymorphisms-of-the-dgkb-and-vcam1-genes-are-associated-with-granulocyte-colony-stimulating-factor-mediated-peripheral-blood-stem-cell-mobilization
#20
Seiji Mishima, Chikashi Matsuda, Tomoko Ishihara, Mayumi Nagase, Takeshi Taketani, Atsushi Nagai
We previously reported the association between LDL cholesterol level (LDL-C) and granulocyte colony stimulating factor (G-CSF)-mobilized peripheral blood (PB) hematopoietic stem cells (HSC). In this study, we investigated the association between gene single nucleotide polymorphisms (SNPs) involved in hematopoiesis and lipid level and PBHSC mobilization. In 46 patients who underwent peripheral blood stem cell harvest (PBSCH), we measured CD34-positive cells in PB and PBSCH, and the patients were classified into good, intermediate, or poor mobilizer groups based on the CD34-positive cell counts...
October 28, 2016: Transfusion and Apheresis Science
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