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Panel reactive antibody

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https://www.readbyqxmd.com/read/28727817/immunogenicity-of-a-novel-clade-b-hiv-1-vaccine-combination-results-of-phase-1-randomized-placebo-controlled-trial-of-an-hiv-1-gm-csf-expressing-dna-prime-with-a-modified-vaccinia-ankara-vaccine-boost-in-healthy-hiv-1-uninfected-adults
#1
Susan P Buchbinder, Nicole A Grunenberg, Brittany J Sanchez, Kelly E Seaton, Guido Ferrari, M Anthony Moody, Nicole Frahm, David C Montefiori, Christine M Hay, Paul A Goepfert, Lindsey R Baden, Harriet L Robinson, Xuesong Yu, Peter B Gilbert, M Juliana McElrath, Yunda Huang, Georgia D Tomaras
BACKGROUND: A phase 1 trial of a clade B HIV vaccine in HIV-uninfected adults evaluated the safety and immunogenicity of a DNA prime co-expressing GM-CSF (Dg) followed by different numbers and intervals of modified vaccinia Ankara Boosts (M). Both vaccines produce virus-like particles presenting membrane-bound Env. METHODS: Four US sites randomized 48 participants to receiving 1/10th the DNA dose as DgDgMMM given at 0, 2, 4, 6 and 8 months, or full dose DgDgM_M or DgDgMM_M regimens, given at 0, 2, 4, and 8 months, and 0, 2, 4, 6, and 10 months, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28719245/production-of-a-mouse-monoclonal-antibody-against-mortalin-by-whole-cell-immunization
#2
Marzieh Rezaei, Abbas Ghaderi
Pancreatic carcinoma is the fourth leading cause of cancer death and is characterized by early invasion and metastasis. Advances in molecular biology directed new strategies in targeted therapy using monoclonal antibodies. To identify new biomarkers, we generated a panel of monoclonal antibodies against the newly established cell line, Faraz-ICR, from a patient with acinar cell carcinoma. After immunization of BALB/c female mice with Faraz-ICR cell line and fusion of splenocytes with SP2/0 myeloma cell line, high reactive hybridoma producing antibodies to Faraz-ICR were detected using enzyme-linked immunosorbent assay, immunofluorescence staining and flow cytometry...
July 18, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28705754/progression-of-lyme-disease-to-bell-s-palsy-despite-treatment-with-doxycycline
#3
Luis A Marcos, Zengmin Yan
A 54 year-old healthy woman presented to the emergency department with a right sided facial paralysis. About 3 weeks ago, she woke up and noticed an attached engorged tick in her right lower extremity. A week later, she noticed a mild to moderate right jaw pain which progressed to a severe right facial pain so she visited her doctor. On physical, II to XII cranial nerve examination was unremarkable. Doppler ultrasound did not show any vascular abnormalities in temporal artery. Her inflammatory markers were within normal limits (C-reactive protein:0...
July 10, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28688206/absence-of-clinical-disease-and-contact-transmission-of-north-american-clade-2-3-4-4-h5nx-hpai-in-experimentally-infected-pigs
#4
Bryan S Kaplan, Mia Kim Torchetti, Kelly M Lager, Richard J Webby, Amy L Vincent
BACKGROUND: In the fall of 2014, clade 2.3.4.4 highly pathogenic avian influenza (HPAI) subtype H5N8 was introduced into North America by migrating waterfowl from Asia where, through reassortment, novel HPAI H5N2 and H5N1 viruses emerged. OBJECTIVES: Assess the susceptibility of pigs to North American HPAI clade 2.3.4.4 H5N1, H5N2, and H5N8. METHODS: Pigs and trachea explants were inoculated with a representative panel of clade 2.3.4.4 HPAI viruses from North America...
July 8, 2017: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/28680713/robust-immunoreactivity-of-teenager-sera-against-peptide-19-from-porphyromonas-gingivalis-hsp60
#5
Eun-Young Kwon, Gil Sun Cha, Ji-Young Joo, Ju-Youn Lee, Jeomil Choi
PURPOSE: Epitope spreading is a phenomenon in which distinct subdominant epitopes become major targets of the immune response. Heat shock protein (HSP) 60 from Porphyromonas gingivalis (PgHSP60) and peptide 19 from PgHSP60 (Pep19) are immunodominant epitopes in autoimmune disease patients, including those with periodontitis. It remains unclear whether Pep19 is a dominant epitope in subjects without periodontitis or autoimmune disease. The purpose of this study was to determine the epitope spreading pattern and verify Pep19 as an immunodominant epitope in healthy teenagers using dot immunoblot analysis...
June 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28679466/successful-launch-of-an-abo-incompatible-kidney-transplantation-program-to-overcome-the-shortage-of-compatible-living-donors-experience-at-a-single-center%C3%A2
#6
Seung Hwan Song, Juhan Lee, Beom Seok Kim, Sinyoung Kim, Jae Geun Lee, Hyeon Joo Jeong, Yu Seun Kim, Myoung Soo Kim, Hyun Ok Kim, Soon Il Kim, Kyu Ha Huh
AIMS: ABO-incompatible (ABOi) kidney transplantation (KT) is being increasingly performed to overcome donor shortages. However, debate persists regarding the post-transplant outcomes of ABOi KT vs. that of ABO-compatible (ABOc) KT. METHODS: A total 454 recipients who underwent living-donor KT (LDKT) between June 2010 and July 2014 at Severance Hospital (Seoul) were retrospectively reviewed. 100 ABOi and 354 ABOc KTs were compared. Recipients with a pretransplant positive crossmatch to their donors, pretransplant donor-specific anti-HLA antibody (DSA), or high panel reactive antibody (PRA ≥ 50%) were excluded from both the ABOi and ABOc KT groups...
July 6, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28673856/a-luciferase-immunoprecipitation-system-lips-assay-for-profiling-human-norovirus-antibodies
#7
Christine M Tin, Lijuan Yuan, Rachel J Dexter, Gabriel I Parra, Tammy Bui, Kim Y Green, Stanislav V Sosnovtsev
A luciferase immunoprecipitation systems (LIPS) assay was developed to define the antigenic specificity and titer of antibodies directed against human norovirus (HuNoV). Recombinant proteins, expressed by plasmid constructs encoding Renilla luciferase (Ruc) fused to the full-length HuNoV major capsid protein (VP1) (Ruc-antigen), were generated for ten HuNoV strains. In addition, subdomain constructs Ruc-Shell (S) and Ruc-Protruding (P) were engineered for a representative GII.4 norovirus (strain GII.4/2006b)...
July 1, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28667033/percent-cpra-calculated-panel-reactive-antibody-value-predicts-percent-of-positive-platelet-crossmatches
#8
Soumya Pandey, Eric Rosenbaum, Michele Cottler-Fox, Terry O Harville
BACKGROUND: Platelet refractoriness or lack of platelet increase after platelet transfusion is seen in patients receiving chronic platelet transfusion support. Antibodies may develop against human platelet antigens (HPA) and/or against HLA class I antigens. Crossmatch (XM) compatible platelets or HLA-identical or HLA-compatible platelets are typically used to manage transfusion refractoriness. We aimed to determine if percent calculated Panel Reactive Antibody (% cPRA) against class I HLA antigens could predict percent positive platelet XM when looking for compatible transfusion products...
May 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28661314/effect-of-single-sensitization-event-on-human-leukocyte-antigen-alloimmunization-in-kidney-transplant-candidates-a-single-center-experience
#9
Marianna Resse, Rossella Paolillo, Biagio Pellegrino Minucci, Dario Costa, Carmela Fiorito, Michele Santangelo, Paride De Rosa, Claudio Napoli
OBJECTIVES: Human leukocyte antigen alloimmunization is caused by exposure to HLA antigens through transfusion, pregnancy, or transplant. Our study objective was to present the rate of positivity of anti-HLA antibody considering the effects of a single sensitization event in kidney transplant candidates at our center. MATERIALS AND METHODS: Our study reviewed 606 kidney transplant candidates. Patient sera were analyzed using Luminex xMAP technology. Panel reactive antibody positivity rates and antibody strengths in patients were analyzed according to a single sensitization event...
June 28, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28657762/hematologic-complications-in-a-patient-with-glycine-soja-polyagglutination-following-fresh-frozen-plasma-transfusion
#10
Ryan P Jajosky, Lloyd O Cook, Elizabeth Manaloor, James F Shikle, Roni J Bollag
Polyagglutination is a rare and underdiagnosed condition, characterized by agglutination of red blood cells(RBCs) with almost all ABO-compatible adult sera. Polyagglutination can occur when a cryptantigen is exposed on RBCs via microbial enzyme activity. Becausenearly all adults naturally produce antibodies against cryptantigens, transfusion of plasma can cause unexpected hemolysis and hematologic complications, such as thrombocytopenia and disseminated intravascular coagulation, in patients whose cryptantigens are exposed...
June 2017: Immunohematology
https://www.readbyqxmd.com/read/28654544/cytolytic-induction-therapy-improves-clinical-outcomes-in-african-american-kidney-transplant-recipients
#11
David J Taber, John W McGillicuddy, Charles F Bratton, Vinayak S Rohan, Satish Nadig, Derek Dubay, Prabhakar K Baliga
OBJECTIVE: Determine the impact of cytolytic versus IL-2 receptor antibody (IL-2RA) induction on acute rejection, graft loss and death in African-American (AA) kidney transplant (KTX) recipients. BACKGROUND: AAs are underrepresented in clinical trials in transplantation; thus, there is controversy regarding the optimal choice of perioperative antibody induction in KTX to improve outcomes. METHODS: National cohort study using US transplant registry data from January 1, 2000 to December 31, 2009 in adult solitary AA KTX recipients, with at least 5 years of follow-up...
June 26, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28640745/the-amino-terminal-subdomain-of-glycoprotein-gc-of-schmallenberg-virus-disulfide-bonding-and-structural-determinants-of-neutralization
#12
Gleyder Roman-Sosa, Axel Karger, Franziska Kraatz, Andrea Aebischer, Kerstin Wernike, Pavlo Maksimov, Christopher H Lillig, Ilona Reimann, Emiliana Brocchi, Markus Keller, Martin Beer
Orthobunyaviruses are enveloped viruses that can cause human and animal diseases. A novel and major member is the Schmallenberg virus (SBV), the etiological agent of an emerging disease of ruminants that has been spreading all over Europe since 2011. The glycoproteins Gn and Gc of orthobunyaviruses mediate the viral entry, and specifically Gc is a major target for the humoral immune response. For example, the N terminal subdomain of the SBV glycoprotein Gc is targeted by neutralizing monoclonal antibodies that recognize conformational epitopes...
June 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28637805/conjugation-of-pspa4pro-with-capsular-streptococcus-pneumoniae-polysaccharide-serotype-14-does-not-reduce-the-induction-of-cross-reactive-antibodies
#13
Míriam A da Silva, Thiago R Converso, Viviane M Gonçalves, Luciana C C Leite, Martha M Tanizaki, Giovana C Barazzone
Current pneumococcal vaccines are composed of bacterial polysaccharides as antigens plain or conjugated to carrier proteins. While efficacious against vaccine serotypes, epidemiologic data shows increasing incidence of infections caused by non-vaccine serotypes of Streptococcus pneumoniae. The use of Pneumococcal surface protein A (PspA) as a carrier protein in a conjugate vaccine could help preventing serotype replacement by increasing vaccine coverage and reducing selective pressure of S. pneumoniae serotypes...
June 21, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28634772/the-effect-of-desensitization-therapy-in-kidney-transplantation
#14
Yong Chul Kim, Mi-Yeon Yu, Jung Pyo Lee, Hajeong Lee, Sang-Il Min, Jongwon Ha, Yon Su Kim
BACKGROUND: Desensitization therapy may enable the patient to get allograft in sensitized recipient or solve the organ shortage in ABO-incompatible relationship in kidney transplantation (KT). However, the graft outcome and morbidity remains unclear. METHODS: We retrospectively analyzed 845 KT patients from January 2010 to February 2016 at Seoul National University Hospital. The patients were divided into three groups as follows: HLA-incompatible (HLAi) group, ABO-incompatible (ABOi) group, and control group...
June 20, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28616481/evidence-of-exposure-to-rickettsia-felis-in-australian-patients
#15
Yen Thon Teoh, Sze Fui Hii, Stephen Graves, Robert Rees, John Stenos, Rebecca J Traub
Rickettsia felis is an emerging zoonosis, causing flea-borne spotted fever (FBSF). Serological diagnosis is typically confounded by cross-reactivity with typhus group rickettsiae and prior to the development of specific serological methods, cases of FBSF in Australia were misdiagnosed. Patient sera tested between August 2010 and December 2013 and known to be seropositive to R. typhi by immunofluorescence antibody testing (IFAT) were subsequently retested against R. felis using an R. felis-specific IFAT. Sera of 49 patients were of a sufficient quality to be included in re-analysis...
December 2016: One Health
https://www.readbyqxmd.com/read/28592526/novel-cross-reactive-monoclonal-antibodies-against-ebolavirus-glycoproteins-show-protection-in-a-murine-challenge-model
#16
Jim Duehr, Teddy John Wohlbold, Lisa Oestereich, Veronika Chromikova, Fatima Amanat, Madhusudan Rajendran, Sergio Gomez-Medina, Ignacio Mena, Benjamin R TenOever, Adolfo García-Sastre, Christopher F Basler, Cesar Munoz-Fontela, Florian Krammer
Out of an estimated 31,100 cases since its discovery in 1976, ebolaviruses have caused approximately 13,000 deaths. The vast majority (∼11,000) of these occurred during the 2013-2016 West African epidemic. Three out of five species in the genus are known to cause Ebola Virus Disease in humans. Several monoclonal antibodies against the ebolavirus glycoprotein are currently in development as therapeutics. However, there is still a paucity of monoclonal antibodies that can cross-react between the glycoproteins of different ebolavirus species and the mechanism of these monoclonal antibody therapeutics are still not understood in detail...
June 7, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28576438/increase-of-allosensitization-after-a-kidney-graft-failure-predictors-and-effect-on-retransplantation-outcomes
#17
Andreia Campos, Jorge Malheiro, Sandra Tafulo, Sofia Santos, Leonídeo Dias, La Salete Martins, Manuela Almeida, Sofia Pedroso, A Castro Henriques, António Cabrita
Patients who are candidates for a second kidney transplant (SKT) frequently have a higher level of panel reactive antibodies (PRA). We assessed the allosensitisation change after a first graft failure (GF), its predictors and impact on retransplantat outcomes. We retrospectively selected 140 adult patients who received a SKT. Recipient and donor characteristics were analyzed. We defined the delta PRA (dPRA) as the difference between peak PRA before the SKT and first one (cohort median value=+10%). Logistic regression analysis was used to determine risk factors for dPRA≥10% and acute rejection (AR) in the SKT...
May 30, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28557814/significance-of-frequencies-compositions-and-or-antileukemic-activity-of-dc-stimulated-invariant-nkt-nk-and-cik-cells-on-the-outcome-of-patients-with-aml-all-and-cll
#18
Corinna L Boeck, Daniel C Amberger, Fatemeh Doraneh-Gard, Wishnu Sutanto, Thomas Guenther, Joerg Schmohl, Friedhelm Schuster, Helmut Salih, Florian Babor, Arndt Borkhardt, Helga Schmetzer
Invariant natural killer T (iNKT)/natural killer (NK)/cytokine-induced killer (CIK) cells are important for immune surveillance. (I) Novel combinations of antibody 6B11 (targeting the Vα24-Jα18-invariant T-cell receptor) with CD4/CD8/CD1d/Vα24 for iNKT subset detection and "T/NK cell-like"-iNKT subsets were defined. Compared with healthy peripheral blood mononuclear cells (MNC) (significantly) lower proportions of iNKT cells (6B11/6B11CD3/6B11CD161), NK cells (CD3CD56/CD3CD161), and CIK cells (CD3CD56/CD3CD161) were found in peripheral blood MNC from acute myeloid (AML)/acute myeloid, lymphoid (ALL)/chronic lymphoid leukemia (CLL) patients in acute disease stages...
July 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28553286/assessment-of-spanish-panel-reactive-antibody-calculator-and-potential-usefulness
#19
Esther Asensio, Marcos López-Hoyos, Íñigo Romón, Jesús Ontañón, David San Segundo
BACKGROUND AND OBJECTIVES: The calculated panel reactive of antibodies (cPRAs) necessary for kidney donor-pair exchange and highly sensitized programs are estimated using different panel reactive antibody (PRA) calculators based on big enough samples in Eurotransplant (EUTR), United Network for Organ Sharing (UNOS), and Canadian Transplant Registry (CTR) websites. However, those calculators can vary depending on the ethnic they are applied. Here, we develop a PRA calculator used in the Spanish Program of Transplant Access for Highly Sensitized patients (PATHI) and validate it with EUTR, UNOS, and CTR calculators...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28553042/successful-renal-transplantation-across-hla-barrier-report-from-india
#20
G Aggarwal, A K Tiwari, P Dorwal, R Chauhan, D Arora, R C Dara, V Kher
Organ donors are sometimes found "unsuitable" due to the presence of donor-specific anti-HLA antibodies in the recipient. In recent years, improved desensitization protocols have successfully helped to overcome HLA incompatibility hurdle. We present three cases where optimum desensitization was achieved in patients with the donor-specific anti-HLA antibody (DSA) leading to successful renal transplantation. All patient-donor pair underwent HLA typing, complement dependent cytotoxicity crossmatch (CDC-XM), flow cytometry XM (FC-XM), and panel reactive antibody...
May 2017: Indian Journal of Nephrology
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