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https://www.readbyqxmd.com/read/29330974/nucleic-acid-amplification-test-for-detection-of-west-nile-virus-infection-in-pakistani-blood-donors
#1
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/29328682/brief-report-prevalence-of-hepatitis-b-and-c-virus-infections-in-u-s-air-force-basic-military-trainees-who-donated-blood-2013-2016
#2
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/29322525/zika-virus-rna-polymerase-chain-reaction-on-the-utility-channel-of-a-commercial-nucleic-acid-testing-system
#3
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
#4
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/29317880/prevalence-of-toxoplasma-gondii-infection-among-healthy-blood-donors-in-northeast-of-iran
#5
Saeed Sadooghian, Hossein Mahmoudvand, Mohammad Ali Mohammadi, Naser Nazari Sarcheshmeh, Amir Tavakoli Kareshk, Hossein Kamiabi, Naser Zia-Ali
Background: This cross-sectional investigation aimed to evaluate the prevalence of IgM and IgG anti-Toxoplasma gondii antibodies and the associated risk factors among healthy blood donors in Khorasan Razavi Province, northeast of Iran from Nov 2014 to May 2015. Methods: Overall, 491 serum samples from apparently healthy blood donors referred the six biggest blood centers in Razavi Khorasan, Iran, were screened for IgG and IgM anti-T. gondii antibodies by enzyme-linked immunosorbent assay (ELISA)...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29315611/isolation-of-a-high-affinity-bet-v-1-specific-igg-derived-scfv-from-a-subject-vaccinated-with-hypoallergenic-bet-v-1-fragments
#6
Elisabeth Gadermaier, Katharina Marth, Christian Lupinek, Raffaela Campana, Gerhard Hofer, Katharina Blatt, Dubravka Smiljkovic, Uwe Roder, Margarete Focke-Tejkl, Susanne Vrtala, Walter Keller, Peter Valent, Rudolf Valenta, Sabine Flicker
BACKGROUND: Recombinant hypoallergenic allergen derivatives have been used in clinical immunotherapy studies and clinical efficacy seems to be related to the induction of blocking IgG antibodies recognizing the wild type allergens. However, so far no treatment-induced IgG antibodies have been characterized. OBJECTIVE: To clone, express and characterize IgG antibodies induced by vaccination with two hypoallergenic recombinant fragments of the major birch pollen allergen, Bet v 1 in a non-allergic subject...
January 9, 2018: Allergy
https://www.readbyqxmd.com/read/29296761/alternative-donor-hematopoietic-stem-cell-transplantation-for-sickle-cell-disease
#7
Andrew L Gilman, Michael J Eckrich, Stacy Epstein, Carrie Barnhart, Mark Cannon, Tracy Fukes, Michelle Hyland, Krishna Shah, Darci Grochowski, Elizabeth Champion, Anastasia Ivanova
Most patients who could be cured of sickle cell disease (SCD) with stem cell transplantation do not have a matched sibling donor. Successful use of alternative donors, including mismatched family members, could provide a donor for almost all patients with SCD. The use of a reduced-intensity conditioning regimen may decrease late adverse effects. Ten patients with symptomatic SCD underwent CD34+ cell-selected, T-cell-depleted peripheral blood stem cell transplantation from a mismatched family member or unrelated donor...
July 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296705/zika-and-chikungunya-virus-infections-in-hematopoietic-stem-cell-transplant-recipients-and-oncohematological-patients
#8
Clarisse Martins Machado, Bárbara Brito de Souza Pereira, Alvina Clara Felix, Maria Carolina Oliveira, Luiz Guilherme Darrigo, Mair Pedro de Souza, Eduardo José de Alencar Paton, Fabia Neves, Vergilio Rensi Colturato, Belinda Pinto Simoes
Aedes mosquitoes are well adapted in domestic environments and widespread in tropical regions. Since 2015, Brazil has been experiencing a triple epidemic of dengue (DENV), chikungunya (CHKV), and Zika (ZIKV) viruses. The last 2 viruses are likely following the path of DENV, which has been endemic in most parts of the country since the 1980s. Given this triple epidemic, we proposed a prospective and collaborative study to assess the prevalence, morbidity, and mortality of DENV, CHKV, and ZIKV infections in hematopoietic stem cell transplant (HSCT) recipients and oncohematological patients...
April 11, 2017: Blood Advances
https://www.readbyqxmd.com/read/29286218/seroepidemiological-study-of-hepatitis-b-c-and-hiv-among-blood-donors-in-kerman
#9
Majid Mohsenizadeh, Hamid Reza Mollaei, Motahareh Ghaziizadeh
Background: Infections transmitted through blood transfusions are the most important issue associated with blood donation. We aimed to provide an assessment of the prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV) among blood donors in Kerman province of Iran. Methods: Between 2014-2016, 99,187 samples were examined in a retrospective study in five blood transfusion centers in Kerman province. Serologic screening for HBsAg, anti-HCV and anti-HIV1/2 was conducted for all samples and positive cases were confirmed...
December 29, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29280152/silent-kel-alleles-identified-from-japanese-individuals-with-the-ko-phenotype
#10
T Onodera, M Kawai, K Obara, T Enomoto, K Sasaki, T Osabe, K Ogasawara, C Toyoda, H Tsuneyama, M Uchikawa, S Inaba, M Satake
BACKGROUND AND OBJECTIVE: The rare Ko phenotype lacks all 36 antigens in the Kell blood system. The molecular basis of the Ko phenotype has been investigated, and more than 40 silent KEL alleles are reported by many investigators. The majority of silent alleles are the KEL*02 background. Here, we report molecular genetic analysis of the KEL gene in Japanese individuals with the Ko phenotype. MATERIALS AND METHODS: The Ko phenotype was screened from Japanese blood donors for several years using monoclonal anti-Ku or anti-K14 by an automated blood grouping system PK7300...
December 27, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/29277499/-association-between-the-viruses-of-the-acquired-immunodeficiency-syndrome-and-the-hepatitis-c-virus-among-young-blood-donors-in-kinshasa-retrospective-analysis-of-10-years
#11
B M M Sumbu, B Longo-Mbenza, S Ahuka-Mundeke, J M Muwonga, G Mvumbi-Lelo, H M Maphana, D Kayembe Nzongola-Nkasu, F M Kalumbu
STUDY OBJECTIVES: The screening of anti-Human Immunodeficiency Virus antibodies is mandatory in every blood donor admitted to the Blood Bank of Kinshasa University Clinics since 1984. However, no compiled data are available to date. The objective of this study was to establish the trend, prevalence, viral co-infections, and determinants of Human Immunodeficiency anti-Virus serology in blood donors admitted between 2003-2006 and 2008-2013. PATIENTS AND METHODS: A retrospective analysis was carried out at University Kinshasa Clinics, using blood donors' records during 2003-2006 and 2008-2013...
December 22, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29260743/-impact-of-current-approaches-to-laboratory-screening-of-donated-blood-and-its-components-on-hepatitis-b-virus-infection-in-patients-with-blood-system-diseases
#12
E N Ignatova, T A Tupoleva, E N Ovchinnikova, T Yu Romanova, N G Yaroslavtseva, F P Filatov, V V Troitskaya, L A Kuzmina, E N Parovichnikova, T V Gaponova, V G Savchenko
AIM: To evaluate the detection rate of markers for hepatitis B virus (HBV) in the blood samples taken from patients with blood system diseases, by applying the current approaches to examining donated blood and its components for markers of viral infections. MATERIAL AND METHODS: The investigation included blood samples from patients with blood system diseases (n=364) and donors (n=5,011). The results of laboratory screening of donated blood samples (n=13,081) were retrospectively analyzed...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/29251601/walking-blood-banks-an-immediate-solution-to-rural-india-s-blood-drought
#13
Rachita Sood, Nakul Raykar, Brian Till, Hemant Shah, Nobhojit Roy
The current system of blood banks in India is such that rural patients are deprived of timely access to an adequate volume of life-saving blood, adding to preventable mortality. On the basis of an academic framework for a blood transfusion system, we describe an alternative approach in which rural practitioners utilise unbanked blood transfusions from a voluntary pool of pre-screened donors. This system would provide safe blood - as evidenced by international experience and limited projected increase in transfusion-transmissible infection in India - at a fraction of the financial cost imposed by the current system...
November 23, 2017: Indian Journal of Medical Ethics
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
#14
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/29234524/viral-hepatitis-endemicity-and-trends-among-an-asymptomatic-adult-population-in-ho-a-5-year-retrospective-study-at-the-ho-municipal-hospital-ghana
#15
Sylvester Yao Lokpo, James Osei-Yeboah, Gameli Kwame Norgbe, Patrick Kwasi Owiafe, Felix Ayroe, Francis Abeku Ussher, Mavis Popuelle Dakorah, John Gameli Deku, Nana Yaw Barimah Manaphraim, Emmanuel Akomanin Asiamah, Tibemponi Ntoni, Prince Senyo Kwasi Nyamadi, Edward Yiadom Boakye, Roseline Avorkliyah
Background: Using prospective blood donors as a proxy, this study was aimed at estimating the burden and five-year (2012-2016) trend of viral hepatitis (HBV and HCV) infection among asymptomatic adult population in Ho. Materials and Methods: A retrospective analysis was done on secondary data extracted from the hospital archives comprising 4,180 prospective blood donors from January 2012 to December 2016. Demographic variables included age and sex, as well as place of residence...
2017: Hepatitis Research and Treatment
https://www.readbyqxmd.com/read/29230833/causes-of-iron-overload-in-blood-donors-a-clinical-study
#16
A H Laursen, O W Bjerrum, L Friis-Hansen, T O Hansen, J L Marott, K Magnussen
BACKGROUND AND OBJECTIVES: Despite the obligate iron loss from blood donation, some donors present with hyperferritinaemia that can result from a wide range of acute and chronic conditions including hereditary haemochromatosis (HH). The objective of our study was to investigate the causes of hyperferritinaemia in the blood donor population and explore the value of extensive HH mutational analyses. MATERIALS AND METHODS: Forty-nine consecutive donors (f = 6, m = 43) were included prospectively from the Capital Regional Blood Center...
December 12, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/29221944/living-uterus-donation-and-transplantation-experience-of-interest-and-screening-in-a-single-center-in-the-united-states
#17
Liza Johannesson, Kristin Wallis, E Colin Koon, Gregory J Mckenna, Tiffany Anthony, Sara G Leffingwell, Goran B Klintmalm, Robert T Gunby, Giuliano Testa
BACKGROUND: Little is known about attitudes toward uterus donation and transplantation in society and the interest of the women the treatment is aimed to assist. OBJECTIVE: This study examined the interest of recipients and living donors in our uterus transplantation program; it describes the screening protocol we developed and the results of the screening and reports demographic data and characteristics of screened candidates. STUDY DESIGN: Initial screening and evaluation included physical examinations by a gynecologist and a transplant surgeon; psychological evaluation; imaging (x-ray, computed tomography, ultrasound); blood tests; immunological testing; viral, bacterial, and fungal testing; drug screen; hormonal testing; Pap smear; urinalysis; and electrocardiogram...
December 5, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29214632/thorough-analysis-of-unorthodox-abo-deletions-called-by-the-1000-genomes-project
#18
M Möller, Å Hellberg, M L Olsson
BACKGROUND AND OBJECTIVES: ABO remains the clinically most important blood group system, but despite earlier extensive research, significant findings are still being made. The vast majority of catalogued ABO null alleles are based on the c.261delG polymorphism. Apart from c.802G>A, other mechanisms for O alleles are rare. While analysing the data set from the 1000 Genomes (1000G) project, we encountered two previously uncharacterized deletions, which needed further exploration. MATERIALS AND METHODS: The Erythrogene database, complemented with bioinformatics software, was used to analyse ABO in 2504 individuals from 1000G...
December 6, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/29212443/the-current-incidence-prevalence-and-residual-risk-of-hepatitis-b-viral-infections-among-voluntary-blood-donors-in-china
#19
Ling Li, Tingting Han, Liang Zang, Libin Niu, Weifang Cheng, Hongkeng Lin, Ka Yi Li, Ruan Cao, Binghai Zhao, Yuqiang Liu, Guojin Ou, Xiao Liu, Yingjie Qi, Yanhua Li, Zhong Liu
BACKGROUND: There are few data available on the prevalence, incidence, and residual risk of transfusion-transmitted HBV (TT-HBV) infections among Chinese blood donors. This study investigated the demographic characteristics of blood donors, as well as the prevalence, incidence, and residual risk (RR) of TT-HBV infections in six large blood centers in different regions of China. METHODS: The demographic characteristics and HBV screening test results of blood donors from six blood centers in different regions in China were collected and analyzed...
December 6, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29195085/clinical-and-hematological-profile-in-a-newborn-cohort-with-hemoglobin-sc
#20
Paulo V Rezende, Millane V Santos, Gustavo F Campos, Laura L M Vieira, Maristela B Souza, André R Belisário, Celia M Silva, Marcos B Viana
OBJECTIVES: Hemoglobin SC is the second most common variant of sickle-cell disease worldwide, after hemoglobin SS. The objectives of the study were to describe the clinical and laboratory characteristics of hemoglobin SC disease in children from a newborn screening program and treated at a blood donor center. METHODOLOGY: This study assessed a cohort of 461 infants born between 01/01/1999 and 12/31/2012 and followed-up until 12/31/2014. Clinical events were expressed as rates for 100 patient-years, with 95% confidence intervals...
November 28, 2017: Jornal de Pediatria
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