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https://www.readbyqxmd.com/read/29334544/blood-biomarkers-of-expressed-and-inducible-hiv-1
#1
Anthony R Cillo, Francis Hong, Angela Tsai, Alivelu Irrinki, Jasmine Kaur, Derek D Sloan, Mattie Follen, Romas Geleziunas, Tomas Cihlar, Sandra S Win, Jeffrey P Murry, John W Mellors
OBJECTIVE: To define the relationships between molecular measures of viral persistence in blood (i.e., plasma viremia, cellular HIV-1 DNA, and mRNA) and expressed or inducible virus from resting CD4 + T-cells of individuals on suppressive ART. DESIGN: We compared molecular measurements of HIV-1 in plasma and in uncultured peripheral blood mononuclear cells (PBMC) to the levels of virions produced by either unstimulated or phorbol myristate acetate and ionomycin (PMA/iono)-stimulated PBMC or resting CD4 + T-cells from 21 donors on suppressive ART...
January 13, 2018: AIDS
https://www.readbyqxmd.com/read/29334367/unmanipulated-haploidentical-transplantation-conditioning-with-busulfan-cyclophosphamide-and-anti-thymoglobulin-for-adult-severe-aplastic-anaemia
#2
L-P Xu, Z-L Xu, F-R Wang, X-D Mo, T-T Han, W Han, Y-H Chen, Y-Y Zhang, J-Z Wang, Y Wang, C-H Yan, Y-Q Sun, F-F Tang, X-H Zhang, X-J Huang
We conducted a retrospective analysis to evaluate outcomes of haploidentical transplantation in adult severe aplastic anaemia (SAA) patients. Fifty-one adults received haploidentical transplantation between May 2011 and December 2016. Patients were administered busulfan (Bu), cyclophosphamide (Cy) and anti-thymoglobulin (ATG) as conditioning regimens, followed by bone marrow and peripheral blood transplantation. The patients' median age was 25 years. Forty-nine patients survived for more than 28 days and all achieved donor myeloid engraftment...
January 15, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29333597/tp53-polymorphism-in-plasma-cell-myeloma
#3
Szymon Andrzej Zmorzynski, Iwona Korszen-Pilecka, Magdalena Wojcierowska-Litwin, Barbara Kwiatkowska-Drabik, Malgorzata Luterek, Sylwia Chocholska, Dorota Koczkodaj, Sylwia Popek, Malgorzata Michalak-Wojnowska, Grazyna Swiderska-Kolacz, Joanna Januszewska, Iwona Surowiec, Waldemar Tomczak, Marek Hus, Anna Dmoszynska, Marcin Pasiarski, Katarzyna Poniewierska-Jasak, Katarzyna Cieplinska, Olga Jankowska-Lecka, Agata Anna Filip
INTRODUCTION: Significant and accessible predictive factors for bortezomib treatment in plasma cell myeloma (PCM) are still lacking. TP53 codon 72 polymorphism (P72R) results in proline (P) or arginine (R) at 72 amino acid position, which causes synthesis of proteins with distinct functions. The aims of our study were to: 1) analyze whether this polymorphism is associated with an increased risk of PCM; 2) study whether the P72R polymorphism affects overall survival (OS) among PCM patients; 3) assess the possible association of the P72R polymorphism with sensitivity to bortezomib in cell cultures derived from PCM patients...
January 15, 2018: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/29333408/is-long-term-storage-of-cryopreserved-stem-cells-for-hematopoietic-stem-cell-transplantation-a-worthwhile-exercise-in-developing-countries
#4
Santhosh Kumar Devadas, Minal Khairnar, Sumathi S Hiregoudar, Shashank Ojha, Sachin Punatar, Alok Gupta, Anant Gokarn, Pallavi Bhole, Sadhana Kannan, Navin Khattry
Background: Stem cell units (SCUs) that are cryopreserved prior to both autologous and allogeneic hematopoietic stem cell transplants (for donor lymphocyte infusion) remain unused or partially used several times, and become an increased burden to blood banks/SCU repositories. Because of the scarcity of data regarding the duration for which the storage is useful, there is no general consensus regarding disposal of SCUs. Methods: We conducted a retrospective audit of SCU utilization in 435 patients who planned to undergo either autologous stem cell transplantation (auto-SCT) (N=239) or allogeneic stem cell transplantation (allo-SCT) (N=196) at a tertiary cancer care center between November 2007 to January 2015...
December 2017: Blood Research
https://www.readbyqxmd.com/read/29332813/fast-and-easy-extraction-of-antidepressants-from-whole-blood-using-ionic-liquids-as-extraction-solvent
#5
Marieke De Boeck, Lisa Dubrulle, Wim Dehaen, Jan Tytgat, Eva Cuypers
This study aims to prove that ionic liquids (ILs) can be used as extraction solvents in a liquid-liquid microextraction, coupled to LC-MS/MS, for the quantification of a large group of antidepressants in whole blood samples. The sample preparation procedure consisted of adding 1.0mL aqueous buffer pH 3.0 and 60µL of IL (1-butyl-3-methylimidazolium hexafluorophosphate) to 1.0mL whole blood. Subsequently, a 5-min rotary mixing step was performed followed by centrifugation. The lower IL phase was collected, diluted 1:10 in methanol and 10µL was injected into the LC-MS/MS...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29332316/how-do-i-implement-a-whole-blood-program-for-massively-bleeding-patients
#6
Mark H Yazer, Andrew P Cap, Philip C Spinella, Louis Alarcon, Darrell J Triulzi
Building on the successful military experience, interest has been rekindled in transfusing whole blood (WB) early in the resuscitation of traumatically injured civilians, often before their ABO group is known. WB efficiently provides treatment for shock and coagulopathy, as well as platelet hemostatic function, to patients losing large volumes of blood. Unlike group O uncrossmatched red blood cells (RBCs), group O WB contains a substantial amount of plasma, which is incompatible with the RBCs of all non-group O recipients...
January 14, 2018: Transfusion
https://www.readbyqxmd.com/read/29332122/quantitative-study-of-the-macular-microvasculature-in-human-donor-eyes
#7
Paula K Yu, Zaid Mammo, Chandrakumar Balaratnasingam, Dao-Yi Yu
Purpose: To precisely quantify the macular microvasculature density using microperfusion and labeling techniques in human donor eyes. Such information may be useful in understanding the role of the macular microvasculature in coping with the metabolic requirements of the neurons in this densely packed region, and provide a reference point for clinical studies using recently developed optical imaging techniques. Methods: The macular microvasculature was perfusion-labeled in 18 human donor eyes and optical stacks collected from regions superior, temporal, inferior, and nasal to the foveola using confocal microscopy...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29330974/nucleic-acid-amplification-test-for-detection-of-west-nile-virus-infection-in-pakistani-blood-donors
#8
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/29330066/regulation-of-vascular-tone-homeostasis-by-no-and-h2s-implications-in-hypertension
#9
REVIEW
Sevda Gheibi, Sajad Jeddi, Khosrow Kashfi, Asghar Ghasemi
Nitric oxide (NO) and hydrogen sulfide (H2S) are two gasotransmitters that are produced in the vasculature and contribute to the regulation of vascular tone. NO and H2S are synthesized in both vascular smooth muscle and endothelial cells; NO functions primarily through the sGC/cGMP pathway, and H2S mainly through activation of the ATP-dependent potassium channels; both leading to relaxation of vascular smooth muscle cells. A deficit in the NO/H2S homeostasis is involved in the pathogenesis of various cardiovascular diseases, especially hypertension...
January 9, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29330014/frequency-of-red-blood-cell-genotypes-in-multi-transfused-patients-and-blood-donors-from-minas-gerais-southeast-brazil
#10
Vitor Mendonça Alves, Fernanda Bernadelli De Vito, Paulo Roberto Juliano Martins, Sheila Soares Silva, Lilian Castilho, Helio Moraes-Souza
BACKGROUND AND OBJECTIVES: The frequency of red blood cell (RBC) antigens in Brazil varies due to differences in the ethnic groups in different regions; however, these studies have not been performed in Minas Gerais, where African admixture is more prevalent in comparison with other states. Due to these facts, this study aimed to determine the frequency of RBC genotypes on Rh, Kell, Duffy and Kidd systems in blood donors and multi-transfused patients from Minas Gerais, Southeast Brazil...
December 16, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29328906/importance-of-information-provision-in-the-acceptance-of-blood-donation-criteria-by-the-general-public-in-belgium
#11
Bert Avau, Emmy De Buck, Philippe Vandekerckhove, Veerle Compernolle
BACKGROUND: Blood transfusions save lives, but carry the risk of causing transfusion-transmitted diseases. This risk is limited by strict donor selection criteria, the most controversial being the exclusion of men who had sex with men (MSM). This cross-sectional study investigated knowledge and beliefs of the general public concerning donor exclusion criteria, with emphasis on MSM. MATERIALS AND METHODS: A representative sample of the population of Flanders, Belgium was questioned using a web-based questionnaire...
November 27, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/29328682/brief-report-prevalence-of-hepatitis-b-and-c-virus-infections-in-u-s-air-force-basic-military-trainees-who-donated-blood-2013-2016
#12
Douglas F Taylor, Ryan S Cho, Jason F Okulicz, Bryant J Webber, John G Gancayco
Hepatitis B virus (HBV) and hepatitis C virus (HCV) can cause significant morbidity in military service members. Prevalences of HBV and HCV infections among military recruits accessioning into the U.S. Air Force have not previously been described. The Joint Base San Antonio-Lackland Blood Donor Center was queried for the results of HBV and HCV screening tests among all basic military trainees who donated blood between 25 November 2013 and 16 April 2016. Other active and reserve component members were excluded...
December 2017: MSMR
https://www.readbyqxmd.com/read/29327382/retrospective-analysis-of-forward-and-reverse-abo-typing-discrepancies-among-patients-and-blood-donors-in-a-tertiary-care-hospital
#13
R N Makroo, B Kakkar, S Agrawal, M Chowdhry, B Prakash, P Karna
OBJECTIVE: The aim of our study was to determine the incidence and causes of ABO typing discrepancies among patients and blood donors at our centre. BACKGROUND: An accurate interpretation of the ABO blood group of an individual is of utmost importance to ensure patient safety and good transfusion practices. METHODS: A retrospective observational study was carried out in the Department of Transfusion Medicine in our hospital from March 2013 to December 2015...
January 12, 2018: Transfusion Medicine
https://www.readbyqxmd.com/read/29325312/-outcomes-of-alternative-donor-allogeneic-hematopoietic-stem-cell-transplantation-for-fanconi-anemia-a-five-cases-report
#14
W J Wang, Y Q Sun, F F Tang, T T Han, X D Mo, J Z Wang, X H Zhang, X J Huang, L P Xu
Five patients with Fanconi anemia who received hematopoietic cell transplantation were retrospectively analyzed. The conditioning regimens included fludarabine, cyclophosphamide and anti-thymocyte globulin. Two patients received both bone marrow and peripheral blood stem cells as the source of stem cell grafts from haploidentical matched related donors, while the others received peripheral blood stem cells from unrelated donors. All patients tolerated well and reached hematopoietic reconstitution. One patient died of intracranial infection...
January 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29325214/a-spike-in-mechanotransductive-adenosine-triphosphate-release-from-red-blood-cells-in-microfluidic-constrictions-only-occurs-with-rare-donors
#15
J E Mancuso, W D Ristenpart
OBJECTIVE: Wan et al. (2008) demonstrated that RBCs rapidly and transiently release a spike of 300% more ATP shortly downstream from a short microfluidic constriction where the cells experience a sudden increase in shear stress. More recent work by Cinar et al. (2015), however, yielded no evidence for a similar spike in ATP release downstream of the constriction. Our aim was to determine if a transient spike in mechanotransduction is the typical response of red blood cells to the sudden onset of increased shear...
January 11, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29324291/disulfide-masked-iron-prochelators-effects-on-cell-death-proliferation-and-hemoglobin-production
#16
E A Akam, R D Utterback, J R Marcero, H A Dailey, E Tomat
The iron metabolism of malignant cells, which is altered to ensure higher acquisition and utilization, motivates the investigation of iron chelation strategies in cancer treatment. In a prochelation approach aimed at increasing intracellular specificity, disulfide reduction/activation switches are incorporated on iron-binding scaffolds resulting in intracellularly activated scavengers. Herein, this strategy is applied to several tridentate donor sets including thiosemicarbazones, aroylhydrazones and semicarbazones...
January 4, 2018: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29324289/phylogenetic-analysis-reveals-three-distinct-epidemiological-profiles-in-dutch-and-flemish-blood-donors-with-hepatitis-b-virus-infection
#17
Thijs J van de Laar, Véronique A Van Gaever, Peter van Swieten, An Muylaert, Veerle Compernolle, Hans L Zaaijer
During 2006-2016, hepatitis B virus (HBV) was detected in nearly 400 blood donors in the Netherlands and Flanders. Donor demographics and self-reported risk factors as disclosed during the donor exit interview were compared to HBV phylogenies of donor and reference sequences. First-time donors with chronic HBV-infection were often immigrants (67%) infected with genetically highly diverse strains of genotypes A (32%), B (8%), C (6%), D (53%) and E to H (1%). Each subtype was strongly associated with donor ethnicity...
January 8, 2018: Virology
https://www.readbyqxmd.com/read/29322525/zika-virus-rna-polymerase-chain-reaction-on-the-utility-channel-of-a-commercial-nucleic-acid-testing-system
#18
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/29322517/discordant-human-t-lymphotropic-virus-screening-with-western-blot-confirmation-evaluation-of-the-dual-test-algorithm-for-us-blood-donations
#19
Susan L Stramer, Rebecca L Townsend, Gregory A Foster, Ramona Johnson, Barbara Weixlmann, Roger Y Dodd
BACKGROUND: Human T-lymphotropic virus (HTLV) blood donation screening has used a dual-testing algorithm beginning with either a chemiluminescent immunoassay or enzyme-linked immunosorbent screening assay (ELISA). Before the availability of a licensed HTLV supplemental assay, repeat-reactive (RR) samples on a first assay (Assay 1) were retested with a second screening assay (Assay 2). Donors with RR results by Assay 2 were deferred from blood donation and further tested using an unlicensed supplemental test to confirm reactivity while nonreactive (NR) donors remained eligible for donation until RR on a subsequent donation...
January 10, 2018: Transfusion
https://www.readbyqxmd.com/read/29322364/changes-in-neutrophil-metabolism-upon-activation-and-aging
#20
Barbara Christine Richer, Natallia Salei, Tamás Laskay, Karsten Seeger
Neutrophil activation is an important mechanism of host defense against pathogens. Chronic inflammation and autoimmunity are often associated with abnormalities in phenotype and functions of neutrophils. Since effector functions of immune cells during inflammation are tightly linked to their metabolic state, changes in neutrophil metabolome upon activation have been investigated in this study. Human neutrophils from healthy blood donors (n = 6) were treated either with tumor necrosis factor α (TNF-α) or lipopolysaccharide (LPS), whereas untreated neutrophils were used as control...
January 10, 2018: Inflammation
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