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Blood group incompatibility

Marta Gibert, Sonia Paytubi, Sergi Beltrán, Antonio Juárez, Carlos Balsalobre, Cristina Madrid
Plasmids of the incompatibility group HI1 (IncHI1) have been isolated from several Gram-negative pathogens and are associated with the spread of multidrug resistance. Their conjugation is tightly regulated and it is inhibited at temperatures higher than 30°C, indicating that conjugation occurs outside warm-blooded hosts. Using R27, the prototype of IncHI1 plasmids, we report that plasmid transfer efficiency in E. coli strongly depends on the physiological state of the donor cells. Conjugation frequency is high when cells are actively growing, dropping sharply when cells enter the stationary phase of growth...
October 21, 2016: Environmental Microbiology
Jong Man Kim, Choon Hyuck David Kwon, Jae-Won Joh, Gyu-Seong Choi, Jae Berm Park, Eun-Suk Kang, Sung Joo Kim, Suk-Koo Lee
PURPOSE: T lymphocytes are an essential component of allograft rejection and tolerance. The aims of the present study are to analyze the characteristics of T-cell subsets between ABO-incompatible living donor liver transplantation (ABO-I LDLT) and ABO-compatible LDLT (ABO-C LDLT). MATERIALS AND METHODS: Between April 2013 and June 2014, 61 patients underwent adult LDLT. ABO-I LDLT patients received rituximab and all patients received basiliximab as induction therapy and tacrolimus as maintenance therapy...
October 13, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Marianne Hädener, Marie Martin Fabritius, Stefan König, Christian Giroud, Wolfgang Weinmann
Heavy cannabis consumption is considered incompatible with safe driving. In Swiss traffic policy, drivers suspected of regular cannabis use are therefore required to undergo medical assessment of their long-term fitness to drive. A whole blood concentration of the cannabis metabolite 11-nor-9-carboxy-Δ(9) -tetrahydrocannabinol (THCCOOH) of 40 µg/L is currently used by Swiss forensic experts as decision limit for regular cannabis consumption. The present study aimed to investigate the suitability of THCCOOH-glucuronide blood levels as an additional and/or better marker for the frequency of cannabis use...
October 12, 2016: Drug Testing and Analysis
J N Seheult, D J Triulzi, L H Alarcon, J L Sperry, A Murdock, M H Yazer
BACKGROUND/OBJECTIVES: The safety of administering uncrossmatched, group O, cold-stored, whole blood (cWB) during civilian trauma resuscitation was evaluated. METHODS/MATERIALS: Male trauma patients with haemorrhage-induced hypotension who received leuko-reduced uncrossmatched group O+, low titer (<50) anti-A and -B, platelet-replete cWB during initial resuscitation were included. The biochemical markers of haemolysis (lactate dehydrogenase, total bilirubin, haptoglobin, creatinine, serum potassium) were measured on the day of cWB receipt (day 0), and over the next 2 days, reports of transfusion reactions and total blood product administration in first 24 h of admission were recorded...
October 12, 2016: Transfusion Medicine
Silke Rummler, Astrid Bauschke, Erik Bärthel, Heike Jütte, Katrin Maier, Patrice Ziehm, Christina Malessa, Utz Settmacher
For a long time, it was considered medical malpractice to neglect the blood group system during transplantation. Because there are far more patients waiting for organs than organs available, a variety of attempts have been made to transplant AB0-incompatible (AB0i) grafts. Improvements in AB0i graft survival rates have been achieved with immunosuppression regimens and plasma treatment procedures. Nevertheless, some grafts are rejected early after AB0i living donor liver transplantation (LDLT) due to antibody mediated rejection or later biliary complications that affect the quality of life...
September 24, 2016: World Journal of Transplantation
G I Snell, A K Davis, S Menahem, S Kotecha, H M Whitford, B J Levvey, M Paraskeva, A Webb, G W Westall, R G Walker
We present management strategies utilised for the first case of an urgent live-donor ABO-incompatible B blood group renal transplant, in a patient with a prior A blood group lung transplant for cystic fibrosis. Three years on, renal function is excellent and stable, while lung function has improved.
September 20, 2016: Transplant Immunology
Amoolya Bhat, Vijaya Chowdappa, Smita Surendra Masamatti
INTRODUCTION: Dengue affects more than 50 million people per year and is one of the most common causes of severe thrombocytopaenia. Thrombocytopaenia is a common complication of dengue and other viral fevers apart from malaria, typhoid, leptospirosis, leukaemia and megaloblastic anaemia. A platelet count of <20,000/μl is characteristically seen in dengue haemorrhagic fever and dengue fever. It results from immune complex mediated platelet destruction or bone marrow suppression. Severe thrombocytopaenia <10,000/μl is one of the indications for prophylactic platelet transfusion therapy to prevent haemorrhage...
July 2016: Journal of Clinical and Diagnostic Research: JCDR
Matthias Grube, Daniel Wolff, Norbert Ahrens, Philipp Y Herzberg, Wolfgang Herr, Ernst Holler
ABO blood group antigen incompatibility (ABO mismatch) is not an obstacle to allogeneic stem cell transplantation (allo-SCT). However, the impact on clinical outcome after allo-SCT remains controversial. We analyzed 512 patients after allogeneic peripheral blood SCT (allo-PBSCT) for an association of ABO mismatch with transfusion requirements, myeloid and platelet engraftment, the incidence of GvHD, relapse, transplant-related mortality (TRM), and overall survival (OS). A total of 260 patients underwent ABO-mismatched transplantation and the control group consisted of 252 patients with ABO-matched allo-PBSCT...
September 12, 2016: Clinical Transplantation
Madhavi Lakkaraja, Jenny C Jin, Karen C Manotas, Cheryl A Vinograd, Polina Ferd, Julia Gabor, Megan Wissert, Richard L Berkowitz, Janice G McFarland, James B Bussel
BACKGROUND: Incompatibility between parental platelet (PLT) antigens may lead to sensitization of mother and development of fetal and neonatal alloimmune thrombocytopenia (FNAIT) resulting in fetal thrombocytopenia. Intravenous immunoglobulin (IVIG) with or without prednisone is the most effective, evidence-based antenatal treatment for subsequent FNAIT-affected pregnancies. IVIG infusion causes hemolysis in other settings, the degree depending upon patient blood groups (BGs). STUDY DESIGN AND METHODS: In ClinicalTrials...
October 2016: Transfusion
Nithya Mohanan, Nittin Henry, Aboobacker Mohamed Rafi, Susheela J Innah
A 72-year-old female with co-morbidities posted for surgical correction of fracture neck of femur without any history of transfusions was noted to have a hemoglobin level of 7 g/dl and packed red blood cells transfusion was ordered. Pretransfusion tests demonstrated A1B group with D positive on forward grouping. Reverse grouping showed a varying grade of agglutination with A, B, and O cells. Agglutination being stronger at 4°C. Antibody screening showed pan-agglutination, direct Coomb's test and auto control were negative...
July 2016: Asian Journal of Transfusion Science
Christian J Merz, Florian Dietsch, Michael Schneider
The acquisition of conceptual knowledge in scientific domains is among the central aims of school instruction because this semantic declarative knowledge helps individuals make interferences and explain complex phenomena. Recent research shows that naïve concepts acquired during childhood persist in long-term memory long after learning the scientifically correct concepts in school. In this study, we investigated the effects of stress on the retrieval of these conceptual representations. To this end, 40 healthy men were randomly assigned to either psychosocial stress or a control condition and evaluated, as quickly and accurately as possible, statements that were compatible with scientific concepts or incompatible with those concepts...
October 2016: Neurobiology of Learning and Memory
Andrew Bentall, A Nicholas R Barnett, Manjit Braitch, Nicos Kessaris, Will McKane, Chas Newstead, Gavin McHaffie, Alison Brown, Sian Griffin, Nizam Mamode, David Briggs, Simon Ball
BACKGROUND: ABO blood group-incompatible kidney transplantation (ABOiKTx) outcomes are good, but complications are more common than in conventional transplantation. Regimens that use extracorporeal antibody removal therapy (EART) and enhanced immunosuppression are guided by titration of ABO blood group antibodies (using hemagglutination [HA] dilution assays), and these assays vary significantly in performance between centers. This study aims to describe the differences in titer measurement and the effect on clinical practice and outcomes...
August 26, 2016: Transfusion
Wenjing Shang, Yafei Zhai, Zhongrui Ma, Gongjin Yang, Yan Ding, Donglei Han, Jiang Li, Houcheng Zhang, Jun Liu, Peng George Wang, Xian-Wei Liu, Min Chen
BACKGROUND: In the process of ABO-incompatible (ABOi) organ transplantation, removal of anti-A and/or B antibodies from blood plasma is a promising method to overcome hyperacute rejection and allograft loss caused by the immune response between anti-A and/or B antibodies and the A and/or B antigens in the recipient. Although there are commercial columns to do this work, the application is still limited because of the high production cost. RESULTS: In this study, the PglB glycosylation pathway from Campylobacter jejuni was exploited to produce glycoprotein conjugated with Escherichia coli O86:B7 O-antigen, which bears the blood group B antigen epitope to absorb blood group B antibody in blood...
2016: Microbial Cell Factories
Rhiannon McBean, Yew-Wah Liew, Brett Wilson, Pawinee Kupatawintu, Morakot Emthip, Catherine Hyland, Robert Flower
The At(a) blood group antigen (now AUG2 in the Augustine system) is a high-frequency antigen with negative phenotype At(a-) found only in individuals of African ancestry. In a twin pregnancy, the fifth pregnancy in a woman of African origin, serological investigations confirmed that the mother was At(a-) and anti-At(a) was detected. DNA samples were exome sequenced and alignment was performed to allow variant calling. It was confirmed that the single nucleotide polymorphism, rs45458701, within the SLC29A1 gene encoding the ENT1 protein, recently reported to be a basis of the At(a-) phenotype was also the basis of the phenotype in this family...
January 2016: Journal of Pathology. Clinical Research
Emmanuel A Fadeyi, Robert J Stratta, Alan C Farney, Gregory J Pomper
OBJECTIVES: Transplantation of the blood group A2B in a recipient was successfully performed in the setting of receiving a deceased donor kidney from an "incompatible" A1B donor. METHODS: The donor and recipient were both typed for ABO blood group, including ABO genotyping. The donor and recipient were tested for ABO, non-ABO, and human leukocyte antigen (HLA) antibodies. The donor and recipient were typed for HLA antigens, including T- and B-flow cytometry crossmatch tests...
August 2016: American Journal of Clinical Pathology
Jelena Stojanovic, Anna Adamusiak, Nicos Kessaris, Pankaj Chandak, Zubir Ahmed, Neil J Sebire, Grainne Walsh, Helen E Jones, Stephen D Marks, Nizam Mamode
BACKGROUND: Blood group incompatible transplantation (ABOi) in children is rare as pretransplant conditioning remains challenging and concerns persist about the potential increased risk of rejection. METHODS: We describe the results of 11 ABOi pediatric renal transplant recipients in the 2 largest centers in the United Kingdom, sharing the same tailored desensitization protocol. Patients with pretransplant titers of 1 or more in 8 received rituximab 1 month before transplant; tacrolimus and mycophenolate mofetil were started 1 week before surgery...
July 12, 2016: Transplantation
Toshio Izumi, Jota Watanabe, Taiji Tohyama, Yasutsugu Takada
BACKGROUND/AIMS: Living donor liver transplantation is an operation with high morbidity and mortality rates. The purpose of this study was to examine factors affecting the short-term outcome after living donor liver transplantation. MATERIALS AND METHODS: Forty-seven adult patients who underwent living donor liver transplantation from September 2001 to December 2014 were included. Short-term post-transplant outcomes were evaluated in terms of the onset of postoperative complications of grade 3a and above (Clavien-Dindo classification) and postoperative 120-day mortality...
July 2016: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
Samar Ahmed, Assem El-Sherif
Hepatitis-C virus (HCV) infection remains highly prevalent among hemodialysis (HD) patients, but there is a notable paucity of information on aspects of bio-incompatibility in those infected patients. This study aimed to answer the following question: In HD patients, does chronic HCV infection attenuate the acute inflammatory response that results from contact of patient's blood with the dialyzer membrane? We elected to investigate the contact response in the initial 15 min of a standardized single dialysis session in a before-after design...
July 2016: Saudi Journal of Kidney Diseases and Transplantation
C L Hopkinson, V Romano, R A Kaye, B Steger, R M K Stewart, M Tsagkataki, M N A Jones, D F P Larkin, S B Kaye
In vascularized organ transplants, gender mismatches have higher rates of immunological rejection. We investigated the influence of gender incompatibility, including H-Y incompatibility, on corneal transplant graft rejection and failure. Patients were included who had undergone a first corneal transplant for keratoconus (KC), Fuchs endothelial dystrophy (FED), pseudophakic bullous keratopathy (PBK), infection and other indications. A Cox regression model was fitted for each indication to determine factors affecting graft failure and rejection at 5 years...
July 14, 2016: American Journal of Transplantation
Sana Ullah, Khaista Rahman, Mehdi Hedayati
BACKGROUND: Hyperbilirubinemia, or jaundice, is a life threatening disorder in newborns. It is a multifactorial disorder with many symptoms. Generally, the physiological jaundice is the most prevalent type however in some regions pathological jaundice is also common. This review article focuses on a brief introduction to jaundice, its types and causes, measuring the bilirubin level, clinical approaches towards hyperbilirubinemia, different precautionary measures for the parents of babies suffering from hyperbilirubinemia and different remedial therapeutic measures for its treatment...
May 2016: Iranian Journal of Public Health
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