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https://www.readbyqxmd.com/read/29166662/detection-of-hbsag-mutants-in-the-blood-donor-population-of-pakistan
#1
Ahmad Farooq, Usman Waheed, Hasan Abbas Zaheer, Fahad Aldakheel, Shatha Alduraywish, Muhammad Arshad
BACKGROUND: Infection with the Hepatitis B virus (HBV) continues to be one of the leading healthcare issues in Pakistan, affecting over 6 million people. The existence of HBsAg mutants is well documented in many countries. In Pakistan, HBV screening in the majority of the blood banks is performed by Rapid Detection Devices or ELISA tests. These tests are designed to detect HBsAg, but may not detect the mutant HBsAg. Failure to detect the HBsAg mutant may result in the transmission of HBV infection from donor to recipient...
2017: PloS One
https://www.readbyqxmd.com/read/29166361/the-impact-of-hepatectomy-time-of-the-liver-graft-on-post-transplant-outcome-a-eurotransplant-cohort-study
#2
Ina Jochmans, Steffen Fieuws, Ineke Tieken, Undine Samuel, Jacques Pirenne
OBJECTIVE: Assessing the effect of donor hepatectomy time on outcome after transplantation. SUMMARY OF BACKGROUND DATA: When blood supply in a deceased organ donor stops, ischemic injury starts. Livers are cooled to reduce cellular metabolism and minimize ischemic injury. This cooling is slow and livers are lukewarm during hepatectomy, potentially affecting outcome. METHODS: We used the Eurotransplant Registry to investigate the relationship between donor hepatectomy time and post-transplant outcome in 12,974 recipients of deceased-donor livers (January 1, 2004, to December 31, 2013)...
November 21, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29165229/na%C3%A3-ve-t-cells-are-activated-by-autologous-hcmv-infected-endothelial-cells-through-nkg2d-and-can-control-hcmv-transmission-in-vitro
#3
Narmadha Subramanian, Zeguang Wu, Frank Reister, Kerstin Laib Sampaio, Giada Frascaroli, Luka Cicin-Sain, Thomas Mertens
Apart from classical antigen-presenting cells (APCs) like dendritic cells and macrophages, there are semiprofessional APCs such as endothelial cells (ECs) and Langerhans' cells. Human cytomegalovirus (HCMV) infects a wide range of cell types including the ECs which are involved in the trafficking and homing of T cells. By investigating the interaction of naïve T cells obtained from HCMV-seronegative umbilical cord blood with autologous HCMV-infected human umbilical vein ECs (HUVECs), we could show that the activation of naïve T cells occurred after 1 day of peripheral blood mononuclear cell (PBMC) exposure to HCMV-infected HUVECs...
November 21, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29164052/development-of-novel-patient-derived-xenografts-from-breast-cancer-brain-metastases
#4
María J Contreras-Zárate, D Ryan Ormond, Austin E Gillen, Colton Hanna, Nicole L Day, Natalie J Serkova, Britta M Jacobsen, Susan M Edgerton, Ann D Thor, Virginia F Borges, Kevin O Lillehei, Michael W Graner, Peter Kabos, Diana M Cittelly
Brain metastases are an increasing burden among breast cancer patients, particularly for those with HER2(+) and triple negative (TN) subtypes. Mechanistic insight into the pathophysiology of brain metastases and preclinical validation of therapies has relied almost exclusively on intracardiac injection of brain-homing cells derived from highly aggressive TN MDA-MB-231 and HER2(+) BT474 breast cancer cell lines. Yet, these well characterized models are far from representing the tumor heterogeneity observed clinically and, due to their fast progression in vivo, their suitability to validate therapies for established brain metastasis remains limited...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29163543/interleukin-6-present-in-inflammatory-ascites-from-advanced-epithelial-ovarian-cancer-patients-promotes-tumor-necrosis-factor-receptor-2-expressing-regulatory-t-cells
#5
Nirmala Chandralega Kampan, Mutsa Tatenda Madondo, Orla M McNally, Andrew N Stephens, Michael A Quinn, Magdalena Plebanski
Background: Epithelial ovarian cancer (EOC) remains a highly lethal gynecological malignancy. Ascites, an accumulation of peritoneal fluid present in one-third of patients at presentation, is linked to poor prognosis. High levels of regulatory T cells (Tregs) in ascites are correlated with tumor progression and reduced survival. Malignant ascites harbors high levels of Tregs expressing the tumor necrosis factor receptor 2 (TNFR2), as well as pro-inflammatory factors such as interleukin 6 (IL-6) and tumor necrosis factor (TNF)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162889/identification-of-micrornas-as-potential-cellular-monocytic-biomarkers-in-the-early-phase-of-myocardial-infarction-a-pilot-study
#6
Mariana S Parahuleva, Gerhild Euler, Amar Mardini, Behnoush Parviz, Bernhard Schieffer, Rainer Schulz, Muhammad Aslam
MicroRNA has been increasingly suggested to be involved in vascular inflammation. The aim of this study was to assess the expression profile of miRs as possible novel cellular biomarkers in circulating monocytes in patients with ST-segment elevation myocardial infarction (STEMI). Microarray techniques and TaqMan polymerase chain reaction were used to analyse the global expression of 352 miRNAs in peripheral blood monocytes from healthy donors (n = 20) and patients (n = 24) with acute STEMI. The expression level of miR-143 in monocytes from STEMI patients compared to healthy controls was increased, whereas the expression of miR-1, -92a, -99a, and -223 was reduced significantly...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29162402/peripheral-blood-stem-cell-collection-for-allogeneic-hematopoietic-stem-cell-transplantation-practical-implications-after-200-consequent-transplants
#7
Deniz Goren Sahin, Mutlu Arat
BACKGROUND: Proper stem cell mobilization is one of the most important steps in hematopoietic stem cell transplantation (HSCT). The aim of this paper is to share our 6 years' experience and provide practical clinical approaches particularly for stem cell mobilization and collection within the series of more than 200 successive allogeneic HSCT at our transplant center. SUBJECTS & METHODS: Two hundred and seven consecutive patients who underwent allogeneic peripheral blood stem cell transplantation were included in this study...
November 8, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29162400/an-alternative-method-for-custom-prime-a-case-report-of-successful-peripheral-blood-stem-cell-harvesting-from-two-low-weight-child-donors
#8
Ashraf Malek Mohammadi, Amir Hossein Norooznezhad, Parivash Aminian, Mohsen Nikbakht, Bahram Chahardouli, Shahrbano Rostami, Farhad Heshmati, Saeed Mohammadi, Ardeshir Ghavamzadeh
Allogeneic peripheral blood stem cell (APBSCs) transplantation is an effective treatment for hematological malignancies. However low-weight donor children meet some complications. In the current report, PBSCs were harvested from a 14-month-old child (9.8Kg) for a 6years old sibling recipient suffering from pre-B type of acute lymphoblastic leukemia (ALL) and also 24 months old male child donor (12Kg) for a haploidentical recipient suffering from acute myeloid leukemia (AML-M4EO). The PBSC harvesting was performed using Spectra™ Optia(®) apheresis software with continuous mononuclear cell (CMNC) procedure...
November 8, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29162397/biosimilar-filgrastim-leucostim%C3%A2-have-similar-efficacy-in-steady-state-hematopoietic-progenitor-cell-mobilization-compared-to-original-filgrastim-neupogen%C3%A2-and-lenograstim-granocyte%C3%A2-a-retrospective-multicenter-study
#9
Ömür Kayıkçı, Emre Tekgündüz, Ali Hakan Kaya, Hakan Göker, Alma Aslan, Dicle İskender, Sinem Namdaroglu, Aysegul Tetik, Şerife Koçubaba, Fevzi Altuntaş
Biosimilar filgrastim (Leucostim(®)) was shown to be similar in terms of efficacy and safety in hematopoietic progenitor cell mobilization (HPCM) compared to originator filgrastim (Neupogen(®)) and lenograstim (Granocyte(®)) in healthy donors and chemomobilization settings. Here we report our retrospective experience with Leucostim(®) (n: 43) compared to Neupogen(®) (n: 71) and Granocyte(®) (n: 32) in steady-state mobilization of patients presenting with Hodgkin lymphoma, non-Hodgkin lymphoma and multiple myeloma...
November 10, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29162396/factors-associated-with-peripheral-blood-stem-cell-yield-in-healthy-pediatric-donors
#10
REVIEW
Gülsün Karasu, Vedat Uygun, Akif Yesilipek
BACKGROUND AND OBJECTIVES: Although several studies have reported on the use of children as donors for peripheral blood stem cells (PBSC), data on the predictive factors of CD34+ stem cell yield in healthy pediatric donors are very limited. DESIGN AND METHOD: We retrospectively analyzed factors predicting the yield for a target CD34 cell dose of >3×10(6)/kg recipient body weight in 140 apheresis in 100 healthy pediatric donors. The donors were evaluated in four groups assigned according to their ages of being 0-4 years, 5-9 years, 10-14 years and 15-18 years...
November 8, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29162143/prevalence-and-risk-of-hepatitis-e-virus-infection-in-the-hiv-population-of-nepal
#11
Ananta Shrestha, Anurag Adhikari, Manjula Bhattarai, Ramanuj Rauniyar, Jose D Debes, André Boonstra, Thupten K Lama, Mamun Al Mahtab, Amna Subhan Butt, Sheikh Mohammad Fazle Akbar, Nirmal Aryal, Sapana Karn, Krishna Das Manandhar, Birendra Prasad Gupta
BACKGROUND: Infection with the hepatitis E virus (HEV) can cause acute hepatitis in endemic areas in immune-competent hosts, as well as chronic infection in immune-compromised subjects in non-endemic areas. Most studies assessing HEV infection in HIV-infected populations have been performed in developed countries that are usually affected by HEV genotype 3. The objective of this study is to measure the prevalence and risk of acquiring HEV among HIV-infected individuals in Nepal. METHODS: We prospectively evaluated 459 Human Immunodeficiency Virus (HIV)-positive individuals from Nepal, an endemic country for HEV, for seroprevalence of HEV and assessed risk factors associated with HEV infection...
November 21, 2017: Virology Journal
https://www.readbyqxmd.com/read/29160845/vascular-endothelial-growth-factor-sequestration-enhances-in-vivo-cartilage-formation
#12
Carolina M Medeiros Da Cunha, Valeria Perugini, Petra Bernegger, Matteo Centola, Andrea Barbero, Anna L Guildford, Matteo Santin, Andrea Banfi, Ivan Martin, Anna Marsano
Autologous chondrocyte transplantation for cartilage repair still has unsatisfactory clinical outcomes because of inter-donor variability and poor cartilage quality formation. Re-differentiation of monolayer-expanded human chondrocytes is not easy in the absence of potent morphogens. The Vascular Endothelial Growth Factor (VEGF) plays a master role in angiogenesis and in negatively regulating cartilage growth by stimulating vascular invasion and ossification. Therefore, we hypothesized that its sole microenvironmental blockade by either VEGF sequestration by soluble VEGF receptor-2 (Flk-1) or by antiangiogenic hyperbranched peptides could improve chondrogenesis of expanded human nasal chondrocytes (NC) freshly seeded on collagen scaffolds...
November 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29160616/evaluation-of-microtitre-plate-based-haemoglobin-estimation
#13
A P Shah, P T Patel, B P Patel, K K Mishra, K Ghosh
INTRODUCTION: Haemoglobin estimation is one of the most important clinical investigations. Many techniques are available to measure haemoglobin; still there is a need for a haemoglobin assay technique which is cheap, robust and simple and can be used in field conditions very quickly using figure prick sample. We evaluated a cyanmethaemoglobin-based haemoglobin estimation using a microtitre plates for the purpose. METHODS: Microtitre plate-based haemoglobin estimation was developed using cyanmethaemoglobin-based assay and was compared with standard haematology analyser-based haemoglobin estimation in a large number of samples from a population of voluntary blood donors...
November 21, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29160012/near-infrared-spectroscopy-might-be-a-useful-tool-for-predicting-the-risk-of-vascular-complications-after-pediatric-liver-transplants-two-case-reports
#14
Juntaro Shiba, Masaaki Satoh, Koki Taira, Yasunori Niwa, Soichiro Inoue, Koichi Mizuta, Mamoru Takeuchi
In patients that have undergone liver transplants, a postoperative reduction in the blood flow of the liver graft represents a critical complication. We recently encountered an interesting phenomenon; that is, we found that the rSO2 level of the liver graft, as measured by NIRS, drops in patients that subsequently require an emergency liver biopsy. An 8-month-old female and an 8-month-old male underwent living donor liver transplants for biliary atresia. In both cases, a reduction in rSO2 was detected before an emergency liver biopsy was required...
November 21, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/29159826/pharmacological-and-molecular-approaches-for-the-treatment-of-%C3%AE-hemoglobin-disorders
#15
REVIEW
Neelam Lohani, Nupur Bhargava, Anjana Munshi, Sivaprakash Ramalingam
β-hemoglobin disorders, such as β-thalassemia and sickle cell anemia are among the most prevalent inherited genetic disorders worldwide. These disorders are caused by mutations in the gene encoding hemoglobin-β (HBB), a vital protein found in red blood cells (RBCs) that carries oxygen from lungs to all parts of the human body. As a consequence, there has been an enduring interest in this field in formulating therapeutic strategies for the treatment of these diseases. Currently, there is no cure available for hemoglobin disorders, although, some patients have been treated with bone marrow transplantation, whose scope is limited because of the difficulty in finding a histocompatible donor and also due to transplant-associated clinical complications that can arise during the treatment...
November 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29159438/polybrominated-diphenyl-ethers-pbdes-and-hydroxylated-pbdes-in-human-serum-from-shanghai-china-a-study-on-their-presence-and-correlations
#16
Bentuo Xu, Minghong Wu, Mingnan Wang, Chenyuan Pan, Wenhui Qiu, Liang Tang, Gang Xu
Polybrominated diphenyl ethers (PBDEs) are becoming a public health concern because of their potential toxicity, from endocrine disruption system to neurodevelopmental impairments. Nonetheless, information on their levels in human blood is scarce. In this study, human serum samples collected in Shanghai, China, were analyzed for the concentrations of PBDEs and their hydroxylated metabolites (OH-PBDEs). Eight PBDE congeners and six OH-PBDE congeners were quantified in serum samples by gas chromatography with mass spectrometry (GC-MS) and high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS)...
November 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29159414/hepatitis-b-vaccination-screening-and-linkage-to-care-best-practice-advice-from-the-american-college-of-physicians-and-the-centers-for-disease-control-and-prevention
#17
Winston E Abara, Amir Qaseem, Sarah Schillie, Brian J McMahon, Aaron M Harris
Background: Vaccination, screening, and linkage to care can reduce the burden of chronic hepatitis B virus (HBV) infection. However, recommendations vary among organizations, and their implementation has been suboptimal. The American College of Physicians' High Value Care Task Force and the Centers for Disease Control and Prevention developed this article to present best practice statements for hepatitis B vaccination, screening, and linkage to care. Methods: A narrative literature review of clinical guidelines, systematic reviews, randomized trials, and intervention studies on hepatitis B vaccination, screening, and linkage to care published between January 2005 and June 2017 was conducted...
November 21, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/29159318/young-donor-white-blood-cell-immunotherapy-induces-extensive-tumor-necrosis-in-advanced-stage-solid-tumors
#18
Dipnarine Maharaj, Pedro G Vianna, Wendy Ward, Anthony J Messina, Trevor Rayborn, Jacqueline V Gouvea, Richard D Hammer, Zheng Cui
Background: In the past decade, a variety of immunotherapy approaches focused predominantly on the adaptive immune system have shown unprecedented responses in patients with advanced-stage malignancies. However, studies in spontaneous regression/complete resistance (SR/CR) mice and humans have shown a novel innate cancer-killing activity mediated by granulocytes, which is completely transferable for prevention or therapy against established malignancies. Methods: Three patients with advanced, relapsed or refractory solid tumors for which no standard therapy was available or was refused were enrolled into this ongoing combined phase I/II open label clinical trial testing the safety, dose tolerance, and possible antineoplastic efficacy of sequential infusions of HLA-mismatched non-irradiated allogeneic white cells (68-91% granulocytes) collected by leukapheresis from young, healthy donors (age 18-35) following mobilization with granulocyte colony stimulating factor (G-CSF) and dexamethasone...
October 2017: Heliyon
https://www.readbyqxmd.com/read/29158182/confirmation-of-specificity-of-reactivity-in-a-solid-phase-elisa-for-the-detection-of-hepatitis-e-viral-antigen-improves-utility-of-the-assay
#19
M J Ankcorn, S Ijaz, B Haywood, J Neuberger, A M ElSharkawy, J Maggs, R S Tedder
Genotype 3 hepatitis E virus (HEV) can lead to persistent infections in immunocompromised hosts. A recently available commercial assay for the detection of HEV antigen (HEV-Ag ELISA, Wantai diagnostics) may enable the study of HEV-Ag dynamics in such persistent infections, however currently there is no confirmatory test available. We generated a putative neutralising reagent from a pool of four convalescent blood donor samples and explored neutralising activity against HEV antigens from clinical samples, HEV tissue-culture and virus-like particles...
November 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/29158078/self-destructive-behavior-among-full-donor-blood-and-marrow-grafts-and-the-association-with-long-term-graft-function
#20
Richard F Olsson
No abstract text is available yet for this article.
November 17, 2017: Biology of Blood and Marrow Transplantation
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