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https://www.readbyqxmd.com/read/28418913/accumulation-of-myeloid-derived-suppressor-cells-mdscs-induced-by-low-levels-of-il-6-correlates-with-poor-prognosis-in-bladder-cancer
#1
Guoliang Yang, Wenyan Shen, Yan Zhang, Mengyao Liu, Lianhua Zhang, Qiang Liu, Hui Hui Lu, Juanjie Bo
Bladder cancer (BC) is one of the most commonly occurring cancers, with a high recurrence rate and poor outcomes in cases of relapsed metastatic disease. Here, we analyzed the markers and significance of myeloid-derived suppressor cells (MDSCs) for BC development and progression. MDSC markers were examined in peripheral blood from 113 BC patients and 20 healthy volunteers. We identified CD11b+CD33lowHLA-DR- CD3- cells as markers of MDSCs in peripheral blood from BC patients. We also demonstrated that MDSC numbers are higher in BC patients than healthy donors, and that MDSC numbers correlate with the clinical grade, stage, and poor prognosis...
March 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28370062/simultaneous-genotyping-of-human-platelet-alloantigen-1-to-28bw-systems-by-multiplex-polymerase-chain-reaction-sequence-based-typing
#2
X Hong, S Chen, Y Ying, Y Liu, X Xu, J He, F Zhu
BACKGROUND AND OBJECTIVES: Human platelet alloantigen (HPA) genotyping is important for the diagnosis and prevention the alloimmune platelet disorders. In this study, a simultaneous genotyping method for HPA-1 to -28bw systems was established using multiplex PCR-SBT and the frequencies of genotypes and alleles of HPA-1 to -28bw systems in the Zhejiang Han population were analysed. MATERIALS AND METHODS: The specific primers were designed according to the nucleotide sequences of HPA-1 to 28bw systems which are located in ITGB3, GP1BA, ITGA2B, ITGA2, GP1BB and CD109, respectively...
March 31, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28333830/minimal-variation-in-anti-a-and-b-titers-among-healthy-volunteers-over-time-implications-for-the-use-of-out-of-group-blood-components
#3
Ulrik Sprogøe, Mark Yazer, Mads Hvidkjær Rasmussen, Berit Antonsen, Claus Bistrup, Kristian Assing
BACKGROUND: Using potentially out-of-group blood components, like low titer A plasma and O whole blood, in the resuscitation of trauma patients is becoming increasingly popular. However, very little is known whether the donors' anti-A and/or -B titers change over time and whether repeated titer measurements on the same donor are required to ensure that each donation produces a low titer product. METHODS: The anti-A and/or -B titers were measured on 56 healthy adult volunteers (47 blood donors; 9 blood center personnel) every three months for 12 consecutive months using an automated solid phase analyzer...
March 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28254426/dna-damage-in-lymphocytes-of-patients-suffering-from-complex-traumatization
#4
Liana M Bergholz, Claudia Subic-Wrana, Daniel Heylmann, Manfred E Beutel, Jörg Wiltink, Bernd Kaina
It has been shown that complex childhood traumatization (CCT) increases the risk for severe somatic and mental disorders. However, the somatic pathways linking maladaptive affect regulation and disease are not understood. Here we tested the hypothesis that traumatic stress is linked to the induction of DNA damage. We isolated peripheral lymphocytes (PBLCs) from blood of healthy donors and patients suffering from CCT. Cells were immobilised on slides and stained with anti-phosphohistone 2AX (γH2AX). The number of γH2AX foci, which are an accepted surrogate marker of DNA double-strand breaks (DSBs), was determined and set in relation to the patient characteristics...
February 9, 2017: DNA Repair
https://www.readbyqxmd.com/read/28237471/pesticide-exposure-in-the-local-community-of-vehari-district-in-pakistan-an-assessment-of-knowledge-and-residues-in-human-blood
#5
Muhammad Farhan Saeed, Mussarat Shaheen, Iftikhar Ahmad, Ali Zakir, Muhammad Nadeem, Arif Ali Chishti, Muhammad Shahid, Khuda Bakhsh, Christos A Damalas
The present study is based on cross-sectional data collected from rural and market areas of Vehari District in Pakistan to assess public awareness of pesticide risks and determine the levels of exposure to organochlorine pesticides (OCPs) in the local community. Blood samples were collected from 56 volunteer donors (VDs) including children, female workers, farm workers involved in pesticide business, farm workers involved in pesticide spraying activities, and people who were living away from agricultural fields...
February 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28229475/first-cases-of-zika-virus-infected-us-blood-donors-outside-states-with-areas-of-active-transmission
#6
Phillip C Williamson, Jeffrey M Linnen, Debra A Kessler, Beth H Shaz, Hany Kamel, Ralph R Vassallo, Valerie Winkelman, Kui Gao, Rainer Ziermann, Juscilene Menezes, Stephen Thomas, Jerry A Holmberg, Sonia Bakkour, Mars Stone, Kai Lu, Graham Simmons, Michael P Busch
BACKGROUND: Zika virus (ZIKV) is transmitted by Aedes mosquitos and can result in severe congenital and adult neurologic abnormalities. ZIKV has rapidly spread northward through Central America and the Caribbean and autochthonous cases have been identified in the continental United States. High rates of ZIKA RNA positivity were detected in blood donors during previous epidemics. ZIKV transmission by transfused blood from healthy donor components has been a growing concern. STUDY DESIGN AND METHODS: Individual-donation aliquots of plasma from volunteer blood donors were tested individually with an investigational Procleix ZIKV assay...
March 2017: Transfusion
https://www.readbyqxmd.com/read/28205426/a-study-of-hla-b-15-02-in-9-different-chinese-ethnics-implications-for-carbamazepine-related-sjs-ten
#7
G J Ou, J Wang, X Ji, H Yu, L Jiang, L Li, Q Chen, P C Su, Z Liu
BACKGROUND: HLA-B*15:02 is a known biomarker for carbamazepine (CBZ)-induced Stevens-Johnson syndrome and toxic epidermal necrolysis (SJS/TEN) in some ethnic populations. The US FDA recommends B*15:02 screening for Asian and other populations with a high prevalence of B*15:02 prior to treatment with CBZ to prevent drug-related SJS/TEN. MATERIALS AND METHODS: A total of 1607 blood samples were collected from volunteer blood donors who were ethnic minorities living in the Yunnan province of southwestern China, including 153 Yi, 193 Naxi, 167 Miao, 156 Lisu, 166 Derung, 211 Bai, 184 Hani, 198 Dai, and 179 Zhuang...
April 2017: HLA
https://www.readbyqxmd.com/read/28194856/the-association-of-elevated-alanine-aminotransferase-levels-with-hepatitis-e-virus-infections-among-blood-donors-in-china
#8
Meiyu Wang, Miao He, Binting Wu, Ling Ke, Tingting Han, Jingxing Wang, Hua Shan, Paul Ness, Nan Guo, Yu Liu, Kenrad E Nelson
BACKGROUND: Transfusion transmission of hepatitis E virus (HEV) is an emerging health risk, yet blood donors are rarely screened for this pathogen. Many blood centers instituted screening of blood donors for elevated levels of alanine aminotransferase (ALT) levels to prevent hepatitis C virus, which has continued in China. We evaluated whether elevated ALT levels were associated with HEV among blood donors in China. STUDY DESIGN AND METHODS: Blood samples were collected from 9069 qualified volunteer blood donors from four blood centers in China...
February 2017: Transfusion
https://www.readbyqxmd.com/read/28137274/seroprevalence-and-geographical-distribution-of-human-t-lymphotropic-virus-type-1-among-volunteer-blood-donors-in-endemic-areas-of-iran
#9
Gharib Karimi, Maryam Zadsar, Ali Akbar Pourfathollah
BACKGROUND: Human T-cell lymphotrophic virus type 1 (HTLV-1) has a worldwide distribution and it is endemic in some regions of Iran. One of the most important routes of HTLV-1 transmission is via transfusion of contaminated blood components. The risk of transmission through asymptomatic blood donors, particularly in endemic areas should be considered and appropriately managed. The main objective of this study was to determine the seroprevalence and description the geographic distribution of HTLV-1 among voluntary blood donors in Iran...
January 30, 2017: Virology Journal
https://www.readbyqxmd.com/read/28112988/platelet-bioreactor-accelerated-evolution-of-design-and-manufacture
#10
Jonathan N Thon, Brad J Dykstra, Lea M Beaulieu
Platelets, responsible for clot formation and blood vessel repair, are produced by megakaryocytes in the bone marrow. Platelets are critical for hemostasis and wound healing, and are often provided following surgery, chemotherapy, and major trauma. Despite their importance, platelets today are derived exclusively from human volunteer donors. They have a shelf life of just five days, making platelet shortages common during long weekends, civic holidays, bad weather, and during major emergencies when platelets are needed most...
January 23, 2017: Platelets
https://www.readbyqxmd.com/read/28111924/awareness-of-cord-blood-collection-and-the-impact-on-banking
#11
Rusha Bhandari, Amy Lindley, Deepika Bhatla, Aleksandar Babic, Kathy Mueckl, Rakesh Rao, Paula Brooks, Vicki Geiler, Gilad Gross, Mohamad Al-Hosni, Shalini Shenoy
BACKGROUND: Umbilical cord blood (UCB) is an important source of hematopoietic stem cells for transplantation especially in minority populations with limited chances of finding a histocompatible volunteer donor in the registry. UCB has the advantages of early availability, successful outcomes despite some histocompatibility mismatch, and low incidence of chronic graft-versus-host disease. Public cord blood banks that disseminate UCB products for transplant depend on voluntary donation at participating hospitals and obstetrical providers for collection...
January 23, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28095288/cytomegalovirus-immunoglobulin-g-avidity-index-among-blood-donors-in-alexandria-egypt
#12
Aleya Abdel Gawad, Mona Hashish, Amani Abaza, Aisha El-Kayal
BACKGROUND: Transfusion transmitted diseases (TTD) are a major challenge to transfusion services all over the world. Cytomegalovirus (CMV) is considered one of the main viruses associated with blood transfusion. As CMV screening is not included in routine screening tests done for donated blood in blood banks in Egypt, the detection of CMV Immunoglobulin G (IgG) avidity needs to be tested for being a useful tool to diagnose recent infection among blood donors. The aim of this work was to study CMV IgG avidity index (AI) among blood donors...
December 2016: Central European Journal of Public Health
https://www.readbyqxmd.com/read/28081120/epidemiology-of-chikungunya-virus-outbreaks-in-guadeloupe-and-martinique-2014-an-observational-study-in-volunteer-blood-donors
#13
Pierre Gallian, Isabelle Leparc-Goffart, Pascale Richard, Françoise Maire, Olivier Flusin, Rachid Djoudi, Jacques Chiaroni, Remi Charrel, Pierre Tiberghien, Xavier de Lamballerie
BACKGROUND: During Dec-2013, a chikungunya virus (CHIKV) outbreak was first detected in the French-West Indies. Subsequently, the virus dispersed to other Caribbean islands, continental America and many islands in the Pacific Ocean. Previous estimates of the attack rate were based on declaration of clinically suspected cases. METHODS/PRINCIPAL FINDINGS: Individual testing for CHIKV RNA of all (n = 16,386) blood donations between Feb-24th 2014 and Jan-31st 2015 identified 0·36% and 0·42% of positives in Guadeloupe and Martinique, respectively...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28012709/the-history-and-challenges-of-blood-donor-screening-in-china
#14
REVIEW
Ling Li, Ka Yi Li, Ke Yan, Guojin Ou, Wenhui Li, Jue Wang, Ning Song, Li Tian, Xin Ji, Yongjun Chen, Xiaohua Liang, Zhong Liu, Yanyun Wu
Since the establishment of People's Republic of China in 1949, the Chinese government has encountered several catastrophes related to transfusion transmitted diseases. The government's increasing attention to blood safety has prompted the initiation of a series of policies and measures that have enhanced the level of safety for the blood supply and met the basic clinical demands of blood for 1.3 billion people in the country. Blood donation screening strategies in China predominantly comprise donor screening and donor testing...
November 12, 2016: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/27999757/ccl22-specific-t-cells-modulating-the-immunosuppressive-tumor-microenvironment
#15
Evelina Martinenaite, Shamaila Munir Ahmad, Morten Hansen, Özcan Met, Marie Wulff Westergaard, Stine Kiaer Larsen, Tobias Wirenfeldt Klausen, Marco Donia, Inge Marie Svane, Mads Hald Andersen
Tumor cells and tumor-infiltrating macrophages produce the chemokine CCL22, which attracts regulatory T cells (Tregs) into the tumor microenvironment, decreasing anticancer immunity. Here, we investigated the possibility of targeting CCL22-expressing cells by activating specific T cells. We analyzed the CCL22 protein signal sequence, identifying a human leukocyte antigen A2- (HLA-A2-) restricted peptide epitope, which we then used to stimulate peripheral blood mononuclear cells (PMBCs) to expand populations of CCL22-specific T cells in vitro...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27984397/donor-screening-experience-for-fecal-microbiota-transplantation-in-patients-with-recurrent-c-difficile-infection
#16
Raseen Tariq, Renee Weatherly, Patricia Kammer, Darrell S Pardi, Sahil Khanna
GOALS: To evaluate our experience with stool donor recruitment, screening, retention, and donor perception for fecal microbiota transplantation (FMT). BACKGROUND: Multiply recurrent Clostridium difficile infection is being increasingly managed with FMT from donor stools. However, donor selection and recruitment is challenging due to lack of standard evidence-based guidelines, donor exclusion criteria, frequency of screening and donor commitment. METHODS: Data on donors screened using institutional guidelines with history, blood and stool testing and their perspectives on donation were analyzed...
December 14, 2016: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/27976504/a-novel-flow-cytometry-based-method-of-analyzing-heinz-bodies
#17
D Palasuwan, A Palasuwan, A Charoensappakit, E Noulsri
INTRODUCTION: Heinz bodies are important to diagnosing and managing patients. However, microscopic examination of Heinz bodies has several disadvantages, demonstrating the need for a better method. We explored the potential use of flow cytometry to examine Heinz bodies. METHODS: Whole-blood samples were collected from patients deficient in G6PD and healthy volunteers. Acetylphenylhydrazine was used to induce formation of Heinz bodies in red blood cells (RBCs). Then, RBCs positive for Heinz bodies were examined using a FACSCanto II cytometer...
February 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/27959920/evaluation-of-stem-cell-derived-red-blood-cells-as-a-transfusion-product-using-a-novel-animal-model
#18
Sandeep N Shah, Monique P Gelderman, Emily M A Lewis, John Farrel, Francine Wood, Michael Brad Strader, Abdu I Alayash, Jaroslav G Vostal
Reliance on volunteer blood donors can lead to transfusion product shortages, and current liquid storage of red blood cells (RBCs) is associated with biochemical changes over time, known as 'the storage lesion'. Thus, there is a need for alternative sources of transfusable RBCs to supplement conventional blood donations. Extracorporeal production of stem cell-derived RBCs (stemRBCs) is a potential and yet untapped source of fresh, transfusable RBCs. A number of groups have attempted RBC differentiation from CD34+ cells...
2016: PloS One
https://www.readbyqxmd.com/read/27900761/the-effect-of-iron-balance-on-platelet-counts-in-blood-donors
#19
Anne F Eder, Yu Ying Yau, Kamille West
BACKGROUND: Thrombocytosis (or, less commonly, thrombocytopenia) is associated with iron-deficiency anemia and resolves with iron therapy. Many volunteer blood donors have low iron stores, with or without anemia. Iron balance could affect platelet counts in blood donors. STUDY DESIGN AND METHODS: Whole blood donors deferred for finger-stick hemoglobin levels less than 12.5 g/dL were evaluated by complete blood count and serum iron panel before and after oral iron treatment...
November 29, 2016: Transfusion
https://www.readbyqxmd.com/read/27866583/transfusion-medicine
#20
REVIEW
Nathan T Connell
Transfusion of various blood components can provide relief from symptomatic anemia and reduce the bleeding risks associated with low platelet counts or presence of coagulopathy. Blood components are collected from volunteer donors and processed into separate components to maximize efficient utilization of a scarce resource while also providing maximum clinical benefit. Tests including blood type and screening for clinically significant alloantibodies increase the likelihood of successful transfusion. Risks of transfusion include hypersensitivity and hemolytic transfusion reactions, transfusion-related acute lung injury, transfusion-associated circulatory overload, and transmission of infection...
December 2016: Primary Care
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