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https://www.readbyqxmd.com/read/28544427/advanced-consumable-free-morphological-analysis-of-intact-red-blood-cells-by-a-compact-scanning-flow-cytometer
#1
K V Gilev, E S Yastrebova, D I Strokotov, M A Yurkin, N A Karmadonova, A V Chernyshev, V V Lomivorotov, V P Maltsev
Whereas modern automated blood cell analyzers measure the volume of individual red blood cells (RBCs), leading to four RBC indices (mean corpuscular volume, MCV; mean corpuscular hemoglobin, MCH; mean corpuscular hemoglobin concentration, MCHC; red cell distribution width, and RDW), the RBC shape has not been assessed by clinical screening tools. We applied the scanning flow cytometer (SFC) for complete characterization of intact RBC morphology in terms of diameter, maximal and minimal thicknesses, volume, surface area, sphericity index, spontaneous curvature, hemoglobin concentration, and content...
May 19, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28543021/a-30-year-systematic-review-and-meta-analysis-of-hepatitis%C3%A2-b-virus-among-blood-donors-in-mainland-china-revealing-increase-of-new-threats
#2
Zhan Gao, Yu Zhang, Hua Shan, Ling Shi, Jing Liu, Min Xu, Peibin Zeng, Yu Liu, Miao He
BACKGROUND: Although screening strategies have been routinely implemented in blood centers, the residual risk of transfusion-transmitted hepatitis B virus (HBV) still poses a public health concern in China. The aim of this study is to investigate the HBV blood screening reactive rate and to illustrate the demographics of the corresponding blood donors with revealing of heterogeneity between previous studies and discovering potentially negligent threats. STUDY DESIGN AND METHODS: Literature reporting the HBV screening reactive rate in Chinese blood donors was identified by systematic searching of four electronic databases...
May 19, 2017: Transfusion
https://www.readbyqxmd.com/read/28542611/no-molecular-or-serological-evidence-of-zikavirus-infection-among-healthy-blood-donors-living-in-or-travelling-to-regions-where-aedes-albopictus-circulates
#3
Wegene Borena, Tamara Hofer, Karin Stiasny, Stephan W Aberle, Manfred Gaber, Dorothee von Laer, Harald Schennach
BACKGROUND: Previous studies have shown that Zika virus can infect and be transmitted by A. albopictus. The World Health organization (WHO) has raised concerns of autochthonous transmission of the virus in regions where the vector is endemic. The aim of this pilot study was to assess the occurrence of Zika virus (ZIKV) in western Austria (Tyrol) especially after a history of travel to A. albopictus endemic regions. METHODS: The study participants were healthy blood donors at randomly selected donation sites in the west Austrian region Tyrol...
2017: PloS One
https://www.readbyqxmd.com/read/28524801/association-of-ugt2b7-ugt1a9-abcg2-and-il23r-polymorphisms-with-rejection-risk-in-kidney-transplant-patients
#4
Heloísa Lizotti Cilião, Rossana Batista Oliveira Camargo-Godoy, Marilesia Ferreira de Souza, Mariana Bisarro Dos Reis, Lorena Iastrenski, Vinicius Daher Alvares Delfino, Silvia Regina Rogatto, Ilce Mara de Syllos Cólus
Despite advances in testing compatibility between donor and recipient, graft rejection remains a current concern. Single-nucleotide polymorphisms (SNPs) that codify altered enzymes of metabolism, drug transport, and the immune system may contribute to graft rejection in transplant patients. This study examined the association between SNPs present in genes of these processes and occurrence of graft rejection episodes in 246 kidney transplant patients, 35% of which were diagnosed with rejection. Genotype-gene expression associations were also assessed...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28524366/contrasting-hcv-and-hiv-seroepidemiology-in-11-years-of-blood-donors-screening-in-brazil
#5
J E Levi, S M Lira, C B Bub, M B Polite, C C Terzian, J M Kutner
BACKGROUND: Blood donors are, in principle, healthy individuals who may be revealed as infectious for blood-borne agents by the laboratory screening process, depicting the asymptomatic burden of the disease. Therefore, monitoring hepatitis C virus (HCV)-infected donor and human immunodeficiency virus (HIV)-infected donor and associating to their demographical and behavioural characteristics may shed light on the dynamics and contemporary changes in these viruses' epidemiology. METHODS: Donors presenting repeatedly reactive HCV or HIV serology/nucleic acid testing (NAT) screening results were submitted to confirmatory testing...
May 19, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28523053/seroprevalence-of-transfusion-transmitted-infections-among-different-blood-group-donors-at-blood-bank-lumhs-hyderabad
#6
Faheem Ahmed Memon, Ikram Din Ujjan, Amir Iqbal Memon, Abdul Rehman Shaikh, Ali Raza Rao, Arshi Naz
OBJECTIVES: To study the prevalence of HBsAg, Anti-HCV, HIV, Syphilis and Malaria in blood donors. METHODS: This is a cross sectional descriptive study, conducted at Blood bank and Transfusion center at Liaquat University of Medical & Health Sciences (LUMHS) Hyderabad, during the period from January, 2014 to June, 2015. A total of 4683 blood donors were screened for HBsAg, Anti-HCV and HIV on Architect 20001 (manufactured by Abbott), employing chemiluminescent microparticle immunoassay (CMIA)...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28511387/erythrocyte-alloimmunization-and-autoimmunization-among-blood-donors-and-recipients-visiting-a-tertiary-care-hospital
#7
Daljit Kaur, Lovenish Bains, Manoj Kandwal, Indu Parmar
INTRODUCTION: The ultimate aim of pretransfusion testing is the acceptable survival of donor red cells in recipient's body and antibody detection plays a critical role in achieving the same. The cornerstone of antibody detection method is detecting an unexpected antibody as against the expected antibodies of ABO blood group system. Autoantibodies can also interfere with the detection of clinically significant alloantibodies. AIM: To study the frequency of alloantibodies and autoantibodies in the healthy blood donors and patient population visiting our hospital...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28508402/risk-factors-for-human-immunodeficiency-virus-among-blood-donors-in-cameroon-evidence-for-the-design-of-an-africa-specific-donor-history-questionnaire
#8
Claude T Tagny, Georges Nguefack-Tsague, Diderot Fopa, Celestin Ashu, Estel Tante, Pauline Ngo Balogog, Olivier Donfack, Dora Mbanya, Syria Laperche, Edward Murphy
BACKGROUND: In sub-Saharan Africa improving the deferral of at-risk blood donors would be a cost-effective approach to reducing transfusion-transmitted human immunodeficiency virus (HIV) infections. We performed a pilot case-control study to identify the risk factors for HIV infection and to develop an adapted donor history questionnaire (DHQ) for sub-Saharan Africa. STUDY DESIGN AND METHODS: We recruited 137 HIV-positive donors (cases) and 256 HIV-negative donors (controls) and gathered risk factor data using audio computer-assisted self-interview...
May 15, 2017: Transfusion
https://www.readbyqxmd.com/read/28507920/passenger-lymphocyte-syndrome-pls-a-single-center-retrospective-analysis-of-minor-abo-incompatible-liver-transplants
#9
Sévérine de Bruijn, Ester Philipse, Marie Madeleine Couttenye, Bart Bracke, Dirk Ysebaert, Peter Michielsen, Sven Francque, Thomas Vanwolleghem, Anke Verlinden
Background and Aims: Due to the shortage of donor livers, minor ABO-incompatible liver transplantations are commonly performed. Together with the allograft, immunocompetent B-lymphocytes, called passenger lymphocytes, are transplanted. In case of minor ABO-incompatibility, these passenger lymphocytes produce antibodies directed towards the recipient's red blood cells, which causes immune-mediated hemolysis, also known as the passenger lymphocyte syndrome (PLS). Although this is a self-limiting disorder, serious complications can occur, including graft failure...
March 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28507611/the-impact-of-extended-typing-on-red-blood-cell-alloimmunization-in-transfused-patients
#10
Tatjana Makarovska-Bojadzieva, Emilija Velkova, Milenka Blagoevska
BACKGROUND: Red blood cell (RBC) alloimmunization is still an actual problem in our transfusion practice. In 2011, in addition to the regular ABO/D blood group typing, phenotyping for Rh (C, c, E, e) and Kell antigens was introduced for blood donors and patients undergoing blood transfusion. Our aim was to evaluate the impact of the extended RBC typing and donor/recipient matching on the incidence of RBC alloimmunization. METHODS: A retrospective comparative study was conducted by reviewing RBC request records for about 36,000 patients transfused with RBC in the period from 2013 to 2015 in comparison to the similar study conducted on 47,000 transfused patients in the period from 2005 to 2008...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28502864/chagas-disease-in-europe-a-review-for-the-internist-in-the-globalized-world
#11
REVIEW
Spinello Antinori, Laura Galimberti, Roberto Bianco, Romualdo Grande, Massimo Galli, Mario Corbellino
Chagas disease (CD) or American trypanosomiasis identified in 1909 by Carlos Chagas, has become over the last 40years a global health concern due to the huge migration flows from Latin America to Europe, United States, Canada and Japan. In Europe, most migrants from CD-endemic areas are concentrated in Spain, Italy, France, United Kingdom and Switzerland. Pooled seroprevalence studies conducted in Europe show an overall 4.2% prevalence, with the highest infection rates observed among individuals from Bolivia (18...
May 11, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28488974/blood-donor-deferral-policies-across-europe-and-characteristics-of-men-who-have-sex-with-men-screened-for-human-immunodeficiency-virus-in-blood-establishments-data-from-the-european-men-who-have-sex-with-men-internet-survey-emis
#12
Susanne B Schink, Ruth Offergeld, Axel J Schmidt, Ulrich Marcus
BACKGROUND: The predominant mode of transmission of human immunodeficiency virus (HIV) in Europe is male-to-male transmission. Men who have sex with men (MSM) are deferred from donating blood in many countries, but nevertheless do donate blood. Based on data from 34 countries, we estimated the proportion of MSM screened for HIV in the context of a blood donation and identified individual factors associated with this HIV screening in order to propose possible public health interventions...
March 23, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28488960/towards-pathogen-inactivation-of-red-blood-cells-and-whole-blood-targeting-viral-dna-rna-design-technologies-and-future-prospects-for-developing-countries
#13
REVIEW
Victor J Drew, Lassina Barro, Jerard Seghatchian, Thierry Burnouf
Over 110 million units of blood are collected yearly. The need for blood products is greater in developing countries, but so is the risk of contracting a transfusion-transmitted infection. Without efficient donor screening/viral testing and validated pathogen inactivation technology, the risk of transfusion-transmitted infections correlates with the infection rate of the donor population. The World Health Organization has published guidelines on good manufacturing practices in an effort to ensure a strong global standard of transfusion and blood product safety...
April 13, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28486512/in-house-elisa-based-on-recombinant-orf2-protein-underline-high-prevalence-of-igg-anti-hepatitis-e-virus-amongst-blood-donors-in-south-brazil
#14
Rafael Pandolfi, Denise Ramos de Almeida, Marcelo Alves Pinto, Luiz Carlos Kreutz, Rafael Frandoloso
Hepatitis E Virus (HEV) is a zoonotic pathogen responsible for causing acute hepatitis in human, especially in developing countries. Diagnosis of HEV usually relies on the detection of antibodies mostly by enzyme-linked immunosorbent assay (ELISA). In the present study, we designed a new indirect ELISA (iELISA) based on a short recombinant peptide derived from the capsid protein (ORF2p) and demonstrated its potential for detecting human IgG against HEV genotype 3. The best polystyrene plate (Maxisorp®), optimal ORF2p coating antigen concentration (0,67μg/well) and primary antibody dilution (1:100) were determined...
2017: PloS One
https://www.readbyqxmd.com/read/28484721/donor-specific-anti-human-leukocyte-antigen-antibodies-predict-prolonged-isolated-thrombocytopenia-and-inferior-outcomes-of-haploidentical-hematopoietic-stem-cell-transplantation
#15
Xiaosu Zhao, Xiangyu Zhao, Mingrui Huo, Qiaozhen Fan, Xuying Pei, Yu Wang, Xiaohui Zhang, Lanping Xu, Xiaojun Huang, Kaiyan Liu, Yingjun Chang
Prolonged isolated thrombocytopenia (PT) after allogeneic stem cell transplantation (allo-SCT) has a great impact on transplant outcome. In this study, we performed a retrospective analysis to investigate the association of donor-specific anti-human leukocyte antigen (HLA) antibodies (DSAs) with PT in 394 patients who underwent unmanipulated haploidentical blood and marrow transplantation (HBMT). For HLA antibody positive samples with a median fluorescent intensity (MFI) > 500, DSAs were further examined...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28484511/reducing-risks-of-transfusion-transmitted-infections-in-a-resource-limited-hospital-based-blood-bank-the-case-of-the-yaound%C3%A3-university-teaching-hospital-cameroon
#16
C T Tagny, A Ndoumba, S Laperche, E Murphy, D Mbanya
BACKGROUND AND OBJECTIVES: Although interest in assessing risk of TTIs, very few trends in blood safety epidemiological data from resource-limited blood services are reported in the literature. This analysis aims at reporting trends in seroprevalences of TTIs in blood donations in the Yaoundé University Teaching Hospital (UTH) from 2011 to 2015 and to describe reasons for these changes. MATERIALS AND METHODS: All donations of 2015 were tested for HIV 1&2 antibodies and the P24 antigen, HBsAg, HCV antibody and the Treponema pallidum antibody...
August 2016: ISBT Science Series
https://www.readbyqxmd.com/read/28483726/prevalence-of-igg-and-igm-anti-toxoplasma-gondii-antibodies-in-blood-donors-at-urmia-blood-transfusion-organization-iran
#17
Khosrow Hazrati Tappeh, Jalil Musavi, Mohammad Baradaran Safa, Hosein Galavani, Hamid Alizadeh
OBJECTIVE: The importance of toxoplasmosis lies in its global spread, opportunistic nature, and causative role in abortion or irreparable adverse effects on infants of infected pregnant women. Toxoplasma gondii has different transmission routes to humans, including blood transfusion. The objective of the present study was to evaluate the prevalence of IgG and IgM antibodies specific for T. gondii in blood donors at the Urmia Blood Transfusion Organization in west Azerbaijan, Iran. METHODS: The present analytical, descriptive study evaluated the plasma of 270 randomly selected blood bags donated in 2013...
March 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28480998/evaluation-of-osmocells-a-new-semi-automatic-device-for-osmotic-fragility-assessment
#18
D Gérard, A-J Fattet, C Brakta, A Phulpin, D Steschenko, J-F Lesesve, J Perrin
INTRODUCTION: The osmotic fragility (OF) test was a central test for the diagnosis of hereditary red blood cell (RBC) disorders (mostly hereditary spherocytosis (HS), but thalassaemia as well). Nowadays although the traditional multitubes method has lost a prominent place, many laboratories still perform such a laboured test, despite the lack of standardization. In fact, the evaluation of OF may offer an inexpensive screening for RBC disorders. We present a new semi-automatic device, allowing the continuous recording of OF, by an updated dialysis method...
May 8, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28469422/seroprevalence-of-asymptomatic-dengue-virus-infection-and-its-antibodies-among-healthy-eligible-saudi-blood-donors-findings-from-holy-makkah-city
#19
Ahmed M Ashshi, Saad Alghamdi, Adel G El-Shemi, Sabir Almdani, Bassem Refaat, Amr M Mohamed, Hani O Ghazi, Esam I Azhar, Faisal A Al-Allaf
BACKGROUND: Threat to blood transfusion-transmitted dengue virus (DENV) and its antibodies has recently emerged worldwide. Dengue fever is an endemic disease in Saudi Arabia, particularly in its Western region. The aim of this study was to estimate the seroprevalence of asymptomatic DENV infection and its antibodies among eligible Saudi blood donors. METHODS: Serum samples from 910 healthy/eligible adult male Saudi blood donors, who reside in Holy Makkah City of Saudi Arabia, were collected between March 2015 and August 2016 and screened for the detection of DENV nonstructural protein 1 (NS1) antigen and anti-DENV IgM and IgG antibodies using commercial enzyme-linked immunosorbent assay kits (Panbio, Brisbane, QLD, Australia)...
2017: Virology: Research and Treatment
https://www.readbyqxmd.com/read/28468860/evaluation-of-the-sensitivity-and-specificity-performance-of-the-elecsys%C3%A2-htlv-i-ii-assay-in-a-multicenter-study-in-europe-and-japan
#20
Syria Laperche, Silvia Sauleda, Maria Piron, Annelies Mühlbacher, Harald Schennach, Volkmar Schottstedt, Lucinda Queirós, Naoki Uno, Katsunori Yanagihara, Roland Imdahl, Ariann Hey, Markus Klinkicht, Walter Melchior, Peter Muench, Toshiki Watanabe
Screening of blood for human T-cell lymphotropic virus type I and type II (HTLV-I/II) is important to diagnose and prevent infection and ensure the safety of blood supplies. The Elecsys® HTLV-I/II assay is a newly developed, electrochemiluminescence screening assay for the detection of HTLV-I/II infection. The sensitivity and specificity of the Elecsys® HTLV-I/II assay were determined using well-characterized HTLV-I/II-positive serum and plasma samples, and routine diagnostic and blood donor samples expected to be HTLV-negative, respectively...
May 3, 2017: Journal of Clinical Microbiology
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