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https://www.readbyqxmd.com/read/29147599/prevalence-of-dog-erythrocyte-antigen-1-in-7-414-dogs-in-italy
#1
Anyela Andrea Medina Valentin, Alessandra Gavazza, George Lubas
The study aim was to establish the prevalence of DEA 1, the most immunogenic and clinically important blood group in canine blood transfusion, in 7,414 dogs from Italy. The potential sensitization risk following a first transfusion and the acute reaction risk following a second transfusion given without a cross-matching and blood typing test were also calculated. Dogs tested were purebred (4,798) and mongrel (2,616); 38.8% were DEA 1 negative and 61.2% were DEA 1 positive. High prevalence for DEA 1 positive blood type was found in Ariegeois and English Setter, whereas German Shepherd and Boxer had higher DEA 1 negative blood type...
2017: Veterinary Medicine International
https://www.readbyqxmd.com/read/29140756/cellular-and-molecular-mechanisms-of-autoimmune-hepatitis
#2
G J Webb, G M Hirschfield, E L Krawitt, M E Gershwin
Autoimmune hepatitis is an uncommon idiopathic syndrome of immunemediated destruction of hepatocytes, typically associated with autoantibodies. The disease etiology is incompletely understood but includes a clear association with human leukocyte antigen (HLA) variants and other non- HLA gene variants, female sex, and the environment. Pathologically, there is a CD4+ T cell-rich lymphocytic inflammatory infiltrate with variable hepatocyte necrosis and subsequent hepatic fibrosis. Attempts to understand pathogenesis are informed by several monogenetic syndromes that may include autoimmune liver injury, by several drug and environmental agents that have been identified as triggers in a minority of cases, by human studies that point toward a central role for CD4+ effector and regulatory T cells, and by animal models of the disease...
November 15, 2017: Annual Review of Pathology
https://www.readbyqxmd.com/read/29136651/structural-basis-of-glycan-specificity-of-p-19-vp8-implications-for-rotavirus-zoonosis-and-evolution
#3
Yang Liu, Shenyuan Xu, Andrew L Woodruff, Ming Xia, Ming Tan, Michael A Kennedy, Xi Jiang
Recognition of specific cell surface glycans, mediated by the VP8* domain of the spike protein VP4, is the essential first step in rotavirus (RV) infection. Due to lack of direct structural information of virus-ligand interactions, the molecular basis of ligand-controlled host ranges of the major human RVs (P[8] and P[4]) in P[II] genogroup remains unknown. Here, through characterization of a minor P[II] RV (P[19]) that can infect both animals (pigs) and humans, we made an important advance to fill this knowledge gap by solving the crystal structures of the P[19] VP8* in complex with its ligands...
November 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29134458/animal-cell-expression-systems
#4
M Butler, Ing U Reichl
The glycan profile of therapeutic recombinant proteins such as monoclonal antibodies is a critical quality attribute, which affects the efficacy of the final product. The cellular glycosylation process during protein expression is dependent upon a number of factors such as the availability of substrates in the media, the intracellular content of nucleotide sugars, and the enzyme repertoire of the host cells. In order to control the variability of glycosylation it is important to understand the critical process parameters and their acceptable range of values to enable reproducible production of proteins with a predetermined glycan profile providing the desired biological function or therapeutic effect...
October 3, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29125554/antibody-competition-reveals-surface-location-of-hpv-l2-minor-capsid-protein-residues-17-36
#5
Stephanie M Bywaters, Sarah A Brendle, Kerstin P Tossi, Jennifer Biryukov, Craig Meyers, Neil D Christensen
The currently available nonavalent human papillomavirus (HPV) vaccine exploits the highly antigenic L1 major capsid protein to promote high-titer neutralizing antibodies, but is limited to the HPV types included in the vaccine since the responses are highly type-specific. The limited cross-protection offered by the L1 virus-like particle (VLP) vaccine warrants further investigation into cross-protective L2 epitopes. The L2 proteins are yet to be fully characterized as to their precise placement in the virion...
November 10, 2017: Viruses
https://www.readbyqxmd.com/read/29083978/immunotherapy-regimens-for-metastatic-colorectal-carcinomas
#6
Babar Bashir, Adam E Snook
Metastatic colorectal cancer (mCRC) is a leading cause of cancer-related mortality with a 5-year overall survival rate of 13%. Despite recent advances in cancer immunotherapy, only the minority of CRC patients (<15%) with microsatellite instability can potentially benefit from immune checkpoint inhibitors, the only immunotherapy currently approved for mCRC. In that context, there is an unmet need to improve survival in mCRC. Our ever-increasing understanding of the immune system and its interactions with cancer has allowed development of multiple strategies to potentially improve outcomes in the majority of mCRC patients...
October 30, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29071050/single-step-multiple-genotyping-by-maldi-tof-mass-spectrometry-for-evaluation-of-minor-histocompatibility-antigens-in-patients-submitted-to-allogeneic-stem-cell-transplantation-from-hla-matched-related-and-unrelated-donor
#7
Federica Cattina, Simona Bernardi, Vilma Mantovani, Eleonora Toffoletti, Alessandra Santoro, Domenico Pastore, Bruno Martino, Giuseppe Console, Giovanni Martinelli, Michele Malagola
No abstract text is available yet for this article.
September 26, 2017: Hematology Reports
https://www.readbyqxmd.com/read/29069762/cell-lines-generated-from-a-chronic-lymphocytic-leukemia-mouse-model-exhibit-constitutive-btk-and-akt-signaling
#8
Simar Pal Singh, Saravanan Y Pillai, Marjolein J W de Bruijn, Ralph Stadhouders, Odilia B J Corneth, Henk Jan van den Ham, Alice Muggen, Wilfred van IJcken, Erik Slinger, Annemieke Kuil, Marcel Spaargaren, Arnon P Kater, Anton W Langerak, Rudi W Hendriks
Chronic lymphocytic leukemia (CLL) is characterized by the accumulation of mature CD5(+) B cells in blood. Spontaneous apoptosis of CLL cells in vitro has hampered in-depth investigation of CLL pathogenesis. Here we describe the generation of three monoclonal mouse cell lines, EMC2, EMC4 and EMC6, from the IgH.TEμ CLL mouse model based on sporadic expression of SV40 large T antigen. The cell lines exhibit a stable CD5(+)CD43(+)IgM(+)CD19(+) CLL phenotype in culture and can be adoptively transferred into Rag1(-/-) mice...
September 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29067023/selection-of-shared-and-neoantigen-reactive-t-cells-for-adoptive-cell-therapy-based-on-cd137-separation
#9
Sivan Seliktar-Ofir, Efrat Merhavi-Shoham, Orit Itzhaki, Sharon Yunger, Gal Markel, Jacob Schachter, Michal J Besser
Adoptive cell therapy (ACT) of autologous tumor infiltrating lymphocytes (TIL) is an effective immunotherapy for patients with solid tumors, yielding objective response rates of around 40% in refractory patients with metastatic melanoma. Most clinical centers utilize bulk, randomly isolated TIL from the tumor tissue for ex vivo expansion and infusion. Only a minor fraction of the administered T cells recognizes tumor antigens, such as shared and mutation-derived neoantigens, and consequently eliminates the tumor...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29062250/hyperbilirubinemia-due-to-minor-blood-group-anti-e-incompatibility-in-a-newborn-a-case-report
#10
Murat Özcan, Selin Sevinç, Vildan Boz Erkan, Yüksel Yurdugül, S Ümit Sarıcı
In addition to Rh and ABO incompatibilities subgroup incompatibilities may rarely play a role among the causes of hemolytic anemia and indirect hyperbilirubinemia in newborns. The most common minor blood group antigens that cause blood incompatibility between the mother and baby are C, c, E, e, Kell, Duffy, Diego, Kidd and MNSs antigens. In this article, a newborn in whom hyperbilirubinemia due to anti-E minor blood group incompatibility developed and was treated with phototherapy succesfully is presented and minor blood group incompatibilities due to anti-E are reviewed...
September 2017: Türk Pediatri Arşivi
https://www.readbyqxmd.com/read/29061159/genetic-polymorphisms-of-hla-dp-and-isolated-anti-hbc-are-important-subsets-of-occult-hepatitis-b-infection-in-indonesian-blood-donors-a-case-control-study
#11
Yan Mardian, Yoshihiko Yano, Widya Wasityastuti, Neneng Ratnasari, Yujiao Liang, Wahyu Aristyaning Putri, Teguh Triyono, Yoshitake Hayashi
BACKGROUND: Occult hepatitis B infection (OBI) is defined as the presence of hepatitis B virus (HBV) DNA in the serum and/or liver in HBsAg-negative individuals. OBI is associated with the risk of viral transmission, especially in developing countries, and with progressive liver disease and reactivation in immunosuppressive patients. The objective of this study was to evaluate the relation of OBI to HLA-DP single nucleotide polymorphisms (SNPs) encoding antigen-binding sites for the immune response to HBV infection...
October 23, 2017: Virology Journal
https://www.readbyqxmd.com/read/29057505/ductal-cells-of-minor-salivary-glands-in-sj%C3%A3-gren-s-syndrome-patients-express-line-1-orf2p-and-apobec3b
#12
Eleni-Marina Kalogirou, Evangelia P Piperi, Konstantinos I Tosios, Evangelos Tsiambas, Galinos Fanourakis, Alexandra Sklavounou
BACKGROUND: Type I interferon activation is a hallmark event in Sjögren's syndrome. L1 retroelements stimulate plasmacytoid dendritic cells, activating the type I interferons, and are regulated by various mechanisms, including the APOBEC3 deaminases. As L1s are potential trigger factors in autoimmunity, we aimed to investigate the immunohistochemical localization of L1 ORF2 and its inhibitor APOBEC3B protein in minor salivary glands of Sjögren's syndrome patients. METHODS: Twenty minor salivary gland-tissue samples from 20 Sjögren's syndrome patients, classified according to Tarpley's histological criteria, and 10 controls were evaluated for L1 ORF2p and APOBEC3B expression via immunohistochemistry...
October 23, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/29051183/development-of-t-cell-immunotherapy-for-hematopoietic-stem-cell-transplantation-recipients-at-risk-of-leukemia-relapse
#13
Robson G Dossa, Tanya Cunningham, Daniel Sommermeyer, Indira Medina-Rodriguez, Melinda A Biernacki, Kimberly Foster, Marie Bleakley
Leukemia relapse remains the major cause of allogeneic hematopoietic stem cell transplantation (HCT) failure and the prognosis for patients with post-HCT relapse is poor. There is compelling evidence that potent selective anti-leukemic effects can be delivered by donor T cells specific for particular minor histocompatibility (H) antigens. Thus, T cell receptors (TCR) isolated from minor H antigen-specific T cells represent an untapped resource for developing targeted T cell immunotherapy to manage post-HCT leukemic relapse...
October 19, 2017: Blood
https://www.readbyqxmd.com/read/29049181/recurrent-multiple-organ-involvement-of-disseminated-alveolar-echinococcosis-in-3-patients-case-report
#14
Leilei Xu, Sikandaer Siyiti, Xinghua Song, Hao Wen, Liwen Ding, Akbar Yunus, Zheng Tian, Chong Wang, Jiangtao Chen
RATIONALE: Alveolar echinococcosis (AE) is a rare but highly malignant form of echinococcosis caused by Echinococcus multilocularis. There have been very few reports on multiple-organ AE, especially AE in bones. Here we report 3 rare cases of disseminated multiple-organ AE from western China and its neighboring areas. PATIENT CONCERNS: Patient 1 had back and left hip pain, headache, and weakness in left lower limb, often with minor epilepsy and fluctuation of blood pressure...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29031828/non-progressing-cancer-patients-have-persistent-b-cell-responses-expressing-shared-antibody-paratopes-that-target-public-tumor-antigens
#15
Jeff DeFalco, Michael Harbell, Amy Manning-Bog, Gilson Baia, Alexander Scholz, Beatriz Millare, May Sumi, Danhui Zhang, Felix Chu, Christine Dowd, Patricia Zuno-Mitchell, Dongkyoon Kim, Yvonne Leung, Shuwei Jiang, Xiaobin Tang, Kevin S Williamson, Xiaomu Chen, Sean M Carroll, Gregg Espiritu Santo, Nicole Haaser, Ngan Nguyen, Eldar Giladi, David Minor, Yann Chong Tan, Jeremy B Sokolove, Lawrence Steinman, Tito A Serafini, Guy Cavet, Norman M Greenberg, Jacob Glanville, Wayne Volkmuth, Daniel E Emerling, William H Robinson
There is significant debate regarding whether B cells and their antibodies contribute to effective anti-cancer immune responses. Here we show that patients with metastatic but non-progressing melanoma, lung adenocarcinoma, or renal cell carcinoma exhibited increased levels of blood plasmablasts. We used a cell-barcoding technology to sequence their plasmablast antibody repertoires, revealing clonal families of affinity matured B cells that exhibit progressive class switching and persistence over time. Anti-CTLA4 and other treatments were associated with further increases in somatic hypermutation and clonal family size...
October 11, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/29029813/innovative-therapy-monoclonal-antibodies-and-beyond
#16
M Di Nicola, L Apetoh, M Bellone, M P Colombo, G Dotti, S Ferrone, M Muscolini, J Hiscott, A Anichini, S M Pupa, F de Braud, M Del Vecchio
The seventh Edition of "Innovative Therapy, Monoclonal Antibodies and Beyond" Meeting took place in Milan, Italy, on January 27, 2017. The two sessions of the meeting were focused on: 1) Preclinical assays and novel biotargets; and 2) monoclonal antibodies, cell therapies and targeted molecules. Between these two sessions, a lecture entitled "HLA-antigens modulation and response to immune checkpoint inhibitor immunotherapy" was also presented. Despite the impressive successes in cancer immunotherapy in recent years, the response to immune based interventions occurs only in a minority of patients (∼20%)...
October 5, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29022222/t-cell-receptor-profiling-in-type-1-diabetes
#17
REVIEW
Laura M Jacobsen, Amanda Posgai, Howard R Seay, Michael J Haller, Todd M Brusko
PURPOSE OF REVIEW: The genetic susceptibility and dominant protection for type 1 diabetes (T1D) associated with human leukocyte antigen (HLA) haplotypes, along with minor risk variants, have long been thought to shape the T cell receptor (TCR) repertoire and eventual phenotype of autoreactive T cells that mediate β-cell destruction. While autoantibodies provide robust markers of disease progression, early studies tracking autoreactive T cells largely failed to achieve clinical utility...
October 11, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28992791/bisphenol-a-and-di-2-ethylhexyl-phthalate-exert-divergent-effects-on-apoptosis-and-the-wnt-%C3%AE-catenin-pathway-in-zebrafish-embryos-a-possible-mechanism-of-endocrine-disrupting-chemical-action
#18
Ünsal Veli Üstündağ, İsmail Ünal, Perihan Seda Ateş, A Ata Alturfan, Türkan Yiğitbaşı, Ebru Emekli-Alturfan
Polyethylene terephthalate (PET) and polycarbonate (PC) are the most commonly used plastics in water bottles. Di(2-ethylhexyl) phthalate (DEHP) is used as a plasticizer in PET plastics, and bisphenol A (BPA) is used to produce PC. Both DEHP and BPA are known for their potential endocrine disrupting effects. The Wnt/β-catenin signaling pathway has important roles in cell proliferation, cell specification and cell fate determination during embryonic development. Recent reports suggest a link between the Wnt/β-catenin signaling pathway and apoptosis...
January 1, 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/28978710/cobra-ha-elicits-hemagglutination-inhibition-antibodies-against-a-panel-of-h3n2-influenza-virus-co-circulating-variants
#19
Terianne M Wong, James D Allen, Anne-Gaelle Bebin-Blackwell, Donald M Carter, Timothy Alefantis, Joshua DiNapoli, Harold Kleanthous, Ted M Ross
Each influenza season, a set of wild-type viruses, representing one H1N1, one H3N2, 1-2 influenza B isolates, are selected for inclusion in the annual seasonal influenza vaccine. In order to develop broadly reactive subtype specific influenza vaccines, a methodology called computationally optimized broadly reactive antigens (COBRA) was used to design novel hemagglutinin (HA) vaccine immunogens. COBRA technology was effectively used to design HA immunogens that elicited antibodies that neutralized H5N1 and H1N1 isolates...
October 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28974621/topoisomerase-1-inhibition-promotes-cyclic-gmp-amp-synthase-dependent-antiviral-responses
#20
Geneviève Pépin, Charlotte Nejad, Jonathan Ferrand, Belinda J Thomas, H James Stunden, Elaine Sanij, Chwan-Hong Foo, Cameron R Stewart, Jason E Cain, Philip G Bardin, Bryan R G Williams, Michael P Gantier
Inflammatory responses, while essential for pathogen clearance, can also be deleterious to the host. Chemical inhibition of topoisomerase 1 (Top1) by low-dose camptothecin (CPT) can suppress transcriptional induction of antiviral and inflammatory genes and protect animals from excessive and damaging inflammatory responses. We describe the unexpected finding that minor DNA damage from topoisomerase 1 inhibition with low-dose CPT can trigger a strong antiviral immune response through cyclic GMP-AMP synthase (cGAS) detection of cytoplasmic DNA...
October 3, 2017: MBio
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