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https://www.readbyqxmd.com/read/29470355/effects-of-warm-versus-cold-ischemic-donor-lung-preservation-on-the-underlying-mechanisms-of-injuries-during-ischemia-and-reperfusion
#1
Ilker Iskender, Marcelo Cypel, Tereza Martinu, Manyin Chen, Jin Sakamoto, Hyunhee Kim, Keke Yu, Huiqing Lin, Zehong Guan, Kohei Hashimoto, Thomas K Waddell, Mingyao Liu, Shaf Keshavjee
BACKGROUND: Ischemia-reperfusion injury related to lung transplantation is a major contributor to early postoperative morbidity and mortality. We hypothesized that donation after cardiac death donor lungs experience warm ischemic conditions that activate different injurious mechanisms compared with donor lungs that undergo prolonged cold ischemic conditions. METHODS: Rat donor lungs were preserved under different cold ischemic times (CIT: 12 hours or 18 hours), or under warm ischemia time (WIT: 3 hours) after cardiac death, followed by single left lung transplantation...
February 20, 2018: Transplantation
https://www.readbyqxmd.com/read/29462667/a-proximity-extension-assay-pea-based-method-for-quantification-of-bevacizumab
#2
Ivana Mikačić, Robert Belužić, Oliver Vugrek, Đuro Plavljanić
INTRODUCTION: Proximity Extension Assay (PEA) is a direct one-step protein quantification method using a pair of DNA oligonucleotides linked to antibodies against the target molecule. It requires polyclonal or two monoclonal antibodies (mAbs) that bind to target epitopes close enough to form a DNA duplex which is quantified by real-time PCR. Bevacizumab, an anti-cancer drug, is a mAb against vascular endothelial growth factor with common cardiovascular adverse effects. It is widely used off-label to treat neovascular eye disorders by intravitreal application of small doses...
February 17, 2018: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/29450199/transfusion-transmitted-hepatitis-e-nat-screening-of-blood-donations-and-infectious-dose
#3
Jens Dreier, Cornelius Knabbe, Tanja Vollmer
The risk and importance of transfusion-transmitted hepatitis E virus (TT-HEV) infections by contaminated blood products is currently a controversial discussed topic in transfusion medicine. The infectious dose, in particular, remains an unknown quantity. In the present study, we illuminate and review this aspect seen from the viewpoint of a blood donation service with more than 2 years of experience in routine HEV blood donor screening. We systematically review the actual status of presently known cases of TT-HEV infections and available routine NAT-screening assays...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29450198/parvovirus-b19-what-is-the-relevance-in-transfusion-medicine
#4
REVIEW
David Juhl, Holger Hennig
Parvovirus B19 (B19V) has been discovered in 1975. The association with a disease was unclear in the first time after the discovery of B19V, but meanwhile, the usually droplet transmitted B19V is known as the infectious agent of the "fifth disease," a rather harmless children's illness. But B19V infects erythrocyte progenitor cells and thus, acute B19V infection in patients with a high erythrocyte turnover may lead to a life-threatening aplastic crisis, and acutely infected pregnant women can transmit B19V to their unborn child, resulting in a hydrops fetalis and fetal death...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29446442/characterization-of-source-plasma-from-self-identified-vaccinated-or-convalescent-donors-during-the-2009-h1n1-pandemic
#5
Alexey Khalenkov, Yong He, Jennifer L Reed, Thomas R Kreil, John McVey, Malgorzata Norton, John Scott, Dorothy E Scott
BACKGROUND: Influenza immune globulin, manufactured from plasma of convalescent or vaccinated donors has been proposed as a potential therapy for severe influenza. In 2009, a program was initiated to collect plasma from donors who self-identified as having had H1N1 influenza or having received the H1N1 pandemic vaccine. The goal of this study was to determine the efficiency of donor screening by self-identification without antibody testing, and to evaluate demographic predictors of high-titer donations...
February 15, 2018: Transfusion
https://www.readbyqxmd.com/read/29428559/elevated-il-27-in-patients-with-acute-coronary-syndrome-is-associated-with-adverse-ventricular-remodeling-and-increased-risk-of-recurrent-myocardial-infarction-and-cardiovascular-death
#6
Helena Grufman, Troels Yndigegn, Isabel Gonçalves, Jan Nilsson, Alexandru Schiopu
BACKGROUND AND AIMS: IL-27 is an immunoregulatory cytokine belonging to the IL-6/IL-12 family that was found to be elevated in acute coronary syndrome (ACS) patients. We investigated whether IL-27 is related to post-ischemic cardiac remodeling and long-term prognosis in this patient group. METHODS: We included 524 ACS patients, defined as acute myocardial infarction (AMI) or unstable angina (UA). A subgroup of 107 patients donated blood samples 6 weeks after the index event, and underwent a follow-up echocardiographical examination at 1 year...
February 7, 2018: Cytokine
https://www.readbyqxmd.com/read/29424441/intravenous-iron-isomaltoside-improves-hemoglobin-concentration-and-iron-stores-in-female-iron-deficient-blood-donors-a-randomized-double-blind-placebo-controlled-clinical-trial
#7
Mikkel Gybel-Brask, Jens Seeberg, Lars L Thomsen, Pär I Johansson
BACKGROUND: This trial evaluated the efficacy and safety of intravenous (IV) iron isomaltoside (Monofer) in comparison with placebo in first-time female blood donors. STUDY DESIGN AND METHODS: The trial was a prospective, double blind, placebo-controlled, randomized, comparative, single-center trial of 85 first-time female blood donors. The subjects were randomly assigned 1:1 to either 1000 mg IV iron isomaltoside infusion or placebo. The primary endpoint of the trial was change in hemoglobin (Hb) from baseline to right before the third blood donation...
February 9, 2018: Transfusion
https://www.readbyqxmd.com/read/29419344/mitochondrial-autophagosomes-as-a-mechanism-of-drug-resistance-in-breast-carcinoma
#8
Ayman N Abunimer, Heba Mohammed, Katherine L Cook, David R Soto-Pantoja, Maria Mercedes Campos, Mones S Abu-Asab
We have previously described the process by which mitochondria donate their membranes for the formation of autophagosomes, and in this study we show that the same process could be involved in drug sequestration and exocytosis resulting in multidrug-resistant cancerous cells. We examine the implications of mitochondrial vesicle formation of mitoautophagosomes (MAPS) in response to the cytotoxic drug MKT-077, which targets mortalin, in a drug-resistant breast carcinoma cell line overexpressing P-glycoprotein (P-gp)...
February 8, 2018: Ultrastructural Pathology
https://www.readbyqxmd.com/read/29350414/ross-river-virus-in-australian-blood-donors-possible-implications-for-blood-transfusion-safety
#9
Helen M Faddy, Thu V Tran, Veronica C Hoad, Clive R Seed, Elvina Viennet, Hiu-Tat Chan, Robert Harley, Elise Hewlett, Roy A Hall, Helle Bielefeldt-Ohmann, Robert L P Flower, Natalie A Prow
BACKGROUND: Emerging transfusion-transmissible pathogens, including arboviruses such as West Nile, Zika, dengue, and Ross River viruses, are potential threats to transfusion safety. The most prevalent arbovirus in humans in Australia is Ross River virus (RRV); however, prevalence varies substantially around the country. Modeling estimated a yearly risk of 8 to 11 potentially RRV-viremic fresh blood components nationwide. This study aimed to measure the occurrence of RRV viremia among donors who donated at Australian collection centers located in areas with significant RRV transmission during one peak season...
January 19, 2018: Transfusion
https://www.readbyqxmd.com/read/29346441/a-portable-system-for-processing-donated-whole-blood-into-high-quality-components-without-centrifugation
#10
Sean C Gifford, Briony C Strachan, Hui Xia, Eszter Vörös, Kian Torabian, Taylor A Tomasino, Gary D Griffin, Benjamin Lichtiger, Fleur M Aung, Sergey S Shevkoplyas
BACKGROUND: The use of centrifugation-based approaches for processing donated blood into components is routine in the industrialized world, as disparate storage conditions require the rapid separation of 'whole blood' into distinct red blood cell (RBC), platelet, and plasma products. However, the logistical complications and potential cellular damage associated with centrifugation/apheresis manufacturing of blood products are well documented. The objective of this study was to evaluate a proof-of-concept system for whole blood processing, which does not employ electromechanical parts, is easily portable, and can be operated immediately after donation with minimal human labor...
2018: PloS One
https://www.readbyqxmd.com/read/29336181/analytical-and-between-subject-variation-of-thrombin-generation-measured-by-calibrated-automated-thrombography-on-plasma-samples
#11
Anne F Kristensen, Søren R Kristensen, Ursula Falkmer, Anna-Marie B Münster, Shona Pedersen
BACKGROUND: The Calibrated Automated Thrombography (CAT) is an in vitro thrombin generation (TG) assay that holds promise as a valuable tool within clinical diagnostics. However, the technique has a considerable analytical variation, and we therefore, investigated the analytical and between-subject variation of CAT systematically. Moreover, we assess the application of an internal standard for normalization to diminish variation. METHODS: 20 healthy volunteers donated one blood sample which was subsequently centrifuged, aliquoted and stored at -80 °C prior to analysis...
January 16, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29330974/nucleic-acid-amplification-test-for-detection-of-west-nile-virus-infection-in-pakistani-blood-donors
#12
Saifullah Khan Niazi, Maqbool Alam, Muhammad Sajid Yazdani, Eijaz Ghani, Muhammad Ali Rathore
BACKGROUND: The study was planned to determine the presence of West Nile Virus (WNV) infection in Pakistani blood donors, using Nucleic Acid Amplification Test (NAT). METHODS: The blood donors for study were selected on the basis of the standard questionnaire and routine screening results. Six donors were pooled using an automated pipettor and NAT for WNV was performed on Roche Cobas s 201 NAT system. The reactive pools were resolved in Individual Donation-NAT (ID-NAT) format and a sample from FFP bags of reactive donations was retrieved...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29322525/zika-virus-rna-polymerase-chain-reaction-on-the-utility-channel-of-a-commercial-nucleic-acid-testing-system
#13
Mohamed Boujnan, Ashley J Duits, Marco H G M Koppelman
BACKGROUND: Several countries have implemented safety strategies to reduce the risk of Zika virus (ZIKV) transmission through blood transfusion. These strategies have included nucleic acid amplification testing (NAT) of blood donations. In this study, a new real-time polymerase chain reaction (PCR) assay including internal control for the detection of ZIKV on the cobas omni Utility Channel (UC) on the cobas 6800 system is presented. STUDY DESIGN AND METHODS: PCR conditions and primer/probe concentrations were optimized on the LightCycler 480 instrument...
January 10, 2018: Transfusion
https://www.readbyqxmd.com/read/29314033/amustaline-s-303-treatment-inactivates-high-levels-of-chikungunya-virus-in-red-blood-cell-components
#14
M Aubry, A Laughhunn, F Santa Maria, M C Lanteri, A Stassinopoulos, D Musso
BACKGROUND AND OBJECTIVES: Chikungunya virus (CHIKV) infections have been reported in all continents, and the potential risk for CHIKV transfusion-transmitted infections (TTIs) was demonstrated by the detection of CHIKV RNA-positive donations in several countries. TTIs can be reduced by pathogen inactivation (PI) of blood products. In this study, we evaluated the efficacy of amustaline and glutathione (S-303/GSH) to inactivate CHIKV in red-blood-cell concentrates (RBCs). MATERIAL AND METHODS: Red-blood-cells were spiked with high level of CHIKV...
January 4, 2018: Vox Sanguinis
https://www.readbyqxmd.com/read/29304531/dietary-nitrate-supplementation-reduces-circulating-platelet-derived-extracellular-vesicles-in-coronary-artery-disease-patients-on-clopidogrel-therapy-a-randomised-double-blind-placebo-controlled-study
#15
Nicholas Burnley-Hall, Fairoz Abdul, Vitaliy Androshchuk, Keith Morris, Nick Ossei-Gerning, Richard Anderson, D Aled Rees, Philip E James
Extracellular vesicles (EVs) are implicated in the pathogenesis of cardiovascular disease (CVD). Specifically, platelet-derived EVs are highly pro-coagulant, promoting thrombin generation and fibrin clot formation. Nitrate supplementation exerts beneficial effects in CVD, via an increase in nitric oxide (NO) bioavailability. Clopidogrel is capable of producing NO-donating compounds, such as S-nitrosothiols (RSNO) in the presence of nitrite and low pH. The aim of this study was to assess the effect of nitrate supplementation with versus without clopidogrel therapy on circulating EVs in coronary artery disease (CAD) patients...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29280212/lack-of-evidence-for-the-transmission-of-hepatitis-e-virus-by-coagulation-factor-concentrates-based-on-seroprevalence-data
#16
D Juhl, U Nowak-Göttl, J Blümel, S Görg, H Hennig
BACKGROUND: Whether hepatitis E virus (HEV) infection can be transmitted by coagulation factor concentrates remains unclear. OBJECTIVES: The HEV seroprevalence in blood donors and recipients of coagulation factor concentrates was compared to obtain evidence of whether a transmission of HEV by coagulation factor concentrates could occur. METHODS: Archived samples from whole blood donors and patients who had received coagulation factor concentrates were investigated for the presence of anti-HEV IgG by ELISA...
December 27, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/29275400/tubular-cell-senescence-in-the-donated-kidney-predicts-allograft-function-but-not-donor-remnant-kidney-function-in-living-donor-kidney-transplantation
#17
Tadashi Sofue, Yoshio Kushida, Taro Ozaki, Masahiro Moritoki, Yoko Nishijima, Hiroyuki Ohsaki, Nobufumi Ueda, Yoshiyuki Kakehi, Akira Nishiyama, Tetsuo Minamino
BACKGROUND: It is uncertain whether kidneys from marginal donors are suitable for live kidney transplantation. In deceased donor kidneys, tubular cell senescence affects allograft function. However, the degree of cell senescence in a living donor kidney with marginal factors has not been reported. In this study, we assessed the association of tubular cell senescence with allograft and remnant kidney function by a prospective observational clinical study. METHODS: Thirty-eight living donor kidney transplantations were analyzed prospectively...
December 22, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/29250788/sensitivity-and-specificity-of-a-new-automated-system-for-the-detection-of-hepatitis-b-virus-hepatitis-c-virus-and-human-immunodeficiency-virus-nucleic-acid-in-blood-and-plasma-donations
#18
Susan A Galel, Toby L Simon, Phillip C Williamson, James P AuBuchon, Dan A Waxman, Yasuko Erickson, Rasa Bertuzis, John R Duncan, Khushbeer Malhotra, Jeffrey Vaks, Nancy Huynh, Lisa Lee Pate
BACKGROUND: Use of nucleic acid testing (NAT) in donor infectious disease screening improves transfusion safety. Advances in NAT technology include improvements in assay sensitivity and system automation, and real-time viral target discrimination in multiplex assays. This article describes the sensitivity and specificity of cobas MPX, a multiplex assay for detection of human immunodeficiency virus (HIV)-1 Group M, HIV-2 and HIV-1 Group O RNA, HCV RNA, and HBV DNA, for use on the cobas 6800/8800 Systems...
December 17, 2017: Transfusion
https://www.readbyqxmd.com/read/29250787/metagenomics-in-pooled-plasma-with-identification-of-potential-emerging-infectious-pathogens
#19
Min Xu, Yashan Yang, Ya Zhou, Zhiyang Liu, Yu Liu, Miao He
BACKGROUND: Many emerging infectious pathogens are well known for existing in healthy blood donors and could be transmitted via blood transfusion or plasma derivatives usage. Therefore, there is an urgent need to discover the pathogens in qualified blood donation to avoid potential threats to blood safety. STUDY DESIGN AND METHODS: The objective of this study was to investigate the microbiome that existed in pooled plasma from different manufacturers in Chengdu and Guiyang...
December 17, 2017: Transfusion
https://www.readbyqxmd.com/read/29243265/what-motivates-men-to-donate-blood-a-systematic-review-of-the-evidence
#20
REVIEW
A Carver, K Chell, T E Davison, B M Masser
BACKGROUND AND OBJECTIVES: Effective recruitment and retention of male donors are vital for the ongoing provision of blood products. Compared with females, male donors are less likely to be medically deferred or experience vasovagal reactions and are typically preferred for plasmapheresis donation in voluntary non-remunerated settings. However, females outnumber males among donors aged under 40 years. This systematic review aimed to synthesize evidence and identify key motivators for blood donation among males to inform targeted recruitment/retention campaigns...
December 15, 2017: Vox Sanguinis
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