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https://www.readbyqxmd.com/read/29319177/characterization-of-ectopic-lymphoid-structures-in-different-types-of-acute-renal-allograft-rejection
#1
Kitty de Leur, Marian C Clahsen-van Groningen, Thierry P P van den Bosch, Gretchen N de Graav, Dennis A Hesselink, Janneke N Samsom, Carla C Baan, Karin Boer
BACKGROUND: We hypothesize that T cells such as IL-21+BCL6+ T follicular helper cells can regulate B cell mediated immunity within the allograft during acute T-cell mediated rejection, this process may feed chronic allograft rejection on long term. To investigate this mechanism we determined the presence and activation status of organized T and B cells in so-called ectopic lymphoid structures (ELSs) in different types of acute renal allograft rejection. METHODS: Biopsies showing the following primary diagnosis were included: acute/active antibody-mediated rejection, C4d+ (a/aABMR), acute T cell-mediated rejection grade I (aTCMRI), and acute T cell-mediated rejection grade II (aTCMRII)...
January 10, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29318584/treatment-of-relapsed-refractory-acute-myeloid-leukaemia-in-adults
#2
REVIEW
Armin Rashidi, Daniel J Weisdorf, Nelli Bejanyan
The prognosis of relapsed acute myeloid leukaemia (AML) is poor and treatment is challenging. While the most potent treatment modality for patients who achieve a complete remission after relapse is still allogeneic haematopoietic cell transplantation (allo-HCT), both transplant-related mortality and relapse rates are high and many patients are not candidates for this approach. After a few decades of relative stasis in this field, a large number of novel approaches have become available to tackle this highly fatal disease...
January 9, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29296949/th17-plasticity-and-transition-toward-a-pathogenic-cytokine-signature-are-regulated-by-cyclosporine-after-allogeneic-sct
#3
Kate H Gartlan, Antiopi Varelias, Motoko Koyama, Renee J Robb, Kate A Markey, Karshing Chang, Andrew N Wilkinson, David Smith, Md Ashik Ullah, Rachel D Kuns, Neil C Raffelt, Stuart D Olver, Katie E Lineburg, Bianca E Teal, Melody Cheong, Michele W L Teng, Mark J Smyth, Siok-Keen Tey, Kelli P A MacDonald, Geoffrey R Hill
T-helper 17 (Th17) cells have been widely implicated as drivers of autoimmune disease. In particular, Th17 cytokine plasticity and acquisition of an interleukin-17A+(IL-17A+)interferon γ(IFNγ)+ cytokine profile is associated with increased pathogenic capacity. Donor Th17 polarization is known to exacerbate graft-versus-host disease (GVHD) after allogeneic stem cell transplantation (allo-SCT); however, donor Th17 cytokine coexpression and plasticity have not been fully characterized. Using IL-17 "fate-mapping" mice, we identified IL-6-dependent Th17 cells early after allo-SCT, characterized by elevated expression of proinflammatory cytokines, IL-17A, IL-22, granulocyte-macrophage colony-stimulating factor, and tumor necrosis factor...
February 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296800/the-number-of-cd56dim-nk-cells-in-the-graft-has-a-major-impact-on-risk-of-disease-relapse-following-allo-hsct
#4
Luke Maggs, Francesca Kinsella, Y L Tracey Chan, Suzy Eldershaw, Duncan Murray, Jane Nunnick, Joanne Bird, Charles Craddock, Jianmin Zuo, Ram Malladi, Paul Moss
The graft-versus-leukemia (GVL) effect of allogeneic hemopoietic stem cell transplantation (allo-HSCT) is mediated by the donor immune system and acts to decrease the rate of disease relapse. Although studies of posttransplant immune reconstitution have identified correlates of clinical outcome, the number and profile of mature immune cells infused with the stem cell graft is also likely to be an important determinant and has been relatively poorly studied. We characterized immune cells within the stem cell graft of 107 patients who underwent T-cell-depleted allo-HSCT and related this to clinical outcome...
August 22, 2017: Blood Advances
https://www.readbyqxmd.com/read/29279357/successful-outcome-following-allogeneic-hematopoietic-stem-cell-transplantation-in-adults-with-primary-immunodeficiency
#5
Thomas A Fox, Ronjon Chakraverty, Siobhan Burns, Benjamin Carpenter, Kirsty Thomson, David Lowe, Adele Fielding, Karl Peggs, Panagiotis Kottaridis, Benjamin Uttenthal, Venetia Bigley, Matthew Buckland, Victoria Grandage, Shari Denovan, Sarah Grace, Julia Dahlstrom, Sarita Workman, Andrew Symes, Stephen Mackinnon, Rachael Hough, Emma Morris
INTRODUCTION: The primary immunodeficiencies (PID), rare inherited diseases characterised by severe dysfunction of immunity have been successfully treated by allogeneic hematopoietic stem cell transplantation (Allo-HSCT) in childhood. Controversy exists regarding optimal timing and use of Allo-HSCT in adults, due to lack of experience and previous poor outcomes. MATERIALS AND METHODS: 29 consecutive adult patients, with a mean age at transplant of 24 years (range 17-50) underwent Allo-HSCT...
December 26, 2017: Blood
https://www.readbyqxmd.com/read/29276066/-outcome-of-in-utero-transfusion-in-case-of-f%C3%A5-tomaternal-red-blood-cell-incompatibility
#6
G Ducellier-Azzola, M Pontvianne, A S Weingertner, M Kohler, B Viville, M Weil, N Sananès, R Favre
OBJECTIVE: Erythrocyte allo-immunization's rate has decreased but without adapted treatment the prognosis is still poor. The aim of our study was to evaluate the fetal prognosis, the complication's rate and the risk factors of complications of the intrauterine transfusion. METHODS: Retrospective study about 37 fetus and 86 intrauterine transfusions between 2001 and 2017. Our main criterion in judging was the occurrence of procedure related complications: premature membrane rupture or premature delivery within seven days from the procedure, chorioamnionitis, abnormal fetal heart rate indicating an emergency ceasarean section within the 24hours from the procedure, in utero death or neonatal death related to the procedure...
December 21, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29247824/high-throughput-sequencing-of-the-immune-repertoire-in-oncology-applications-for-clinical-diagnosis-monitoring-and-immunotherapies
#7
Baixin Ye, Daniel Smerin, Qingping Gao, Chunsheng Kang, Xiaoxing Xiong
The diagnostic, monitoring and therapeutic options for cancers currently remain limited. These limitations represent a large threat to human health. Adaptive immunity, which is dependent on diverse repertoires of B cell receptors (BCRs) and T cell receptors (TCRs), plays a critical role in the anti-tumor immune response. Modulation and surveillance of adaptive immunity has become a powerful weapon to combat cancers. Recently, the high-throughput sequencing of immune repertoire (HTS-IR) technology, which provides a robust tool for deep sequencing repertoires of BCRs or TCRs, has been applied in the development of tumor biomarkers and immunotherapeutics for cancers...
December 13, 2017: Cancer Letters
https://www.readbyqxmd.com/read/29246878/de-novo-recipient-specific-glutathione-s-transferase-t1-antibody-development-after-hla-identical-hematopoietic-cell-transplantation
#8
María José Martínez-Bravo, Berta Sánchez, María José Acevedo, José Antonio Pérez-Simón, Antonio Núñez-Roldán, Isabel Aguilera
Donor-specific antibodies against Glutathione S-transferase T1 (GSTT1) have been associated with de novo immune hepatitis after liver transplantation. These antibodies have also been found very early in allo-HCT associated with acute hepatic GvHD but in all the cases the donor cells had experienced previous priming through pregnancies. It remained to be explored whether or not primary recognition of the antigen occurs after HCT and what could be the consequences in the long term outcome. We genotyped a cohort of 68 HCT patients and found 11 with the GSTT1 null donor/positive recipient mismatch...
December 13, 2017: Transplant Immunology
https://www.readbyqxmd.com/read/29209559/nkp46-expression-on-nk-cells-as-a-prognostic-and-predictive-biomarker-for-response-to-allo-sct-in-patients-with-aml
#9
Anne-Sophie Chretien, Raynier Devillier, Cyril Fauriat, Florence Orlanducci, Samia Harbi, Aude Le Roy, Jérôme Rey, Gaelle Bouvier Borg, Emmanuel Gautherot, Jean-François Hamel, Norbert Ifrah, Catherine Lacombe, Pascale Cornillet-Lefebvre, Jacques Delaunay, Antoine Toubert, Christine Arnoulet, Norbert Vey, Didier Blaise, Daniel Olive
NKp46 is a major determinant of natural killer (NK) cell function and it is implicated in tumor immune surveillance in acute myeloid leukemia (AML). The purpose of this study was to investigate the prognostic significance of NKp46 expression in an independent cohort of patients with AML, and to investigate the impact of NKp46 on clinical outcome after allogeneic stem cell transplantation (allo-SCT). NKp46 expression was assessed at diagnosis on NK cells by flow cytometry (N = 180 patients). Clinical outcome was evaluated with regard to NKp46 expression...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29207936/fatal-graft-versus-host-disease-after-allogeneic-stem-cell-transplantation-in-a-patient-recently-exposed-to-nivolumab
#10
Ana Jiménez-Ubieto, Antonia Rodriguez, Pilar Martinez Sánchez, Adolfo Gómez, Yolanda Rodriguez, Gonzalo Carreño-Tarragona, Joaquín Martinez-López, Carlos Grande
Allogeneic hematopoietic stem cell transplantation and checkpoint blockade therapy are immune-based salvage therapies for Hodgkin's lymphoma; however, the use of programmed death 1 blocking agents in the allogeneic stem cell transplantation setting could augment the incidence of steroid refractory graft-versus-host disease. Few studies suggest that that nivolumab is safe in patients previously treated with an allogeneic stem cell transplantation. Likewise, there are very limited data on the use of nivolumab before allogeneic stem cell transplantation...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29197680/increased-co-expression-of-pd-1-tigit-and-klrg-1-on-tumor-reactive-cd8-t-cells-during-relapse-after-allo-sct
#11
Tim J A Hutten, Wieger J Norde, Rob Woestenenk, Ruo Chen Wang, Frans Maas, Michel Kester, J H Frederik Falkenburg, Sofia Berglund, Leo Luznik, Joop H Jansen, Nicolaas Schaap, Harry Dolstra, Willemijn Hobo
Allogeneic stem cell transplantation (allo-SCT) can be a curative treatment for patients with a hematological malignancy due to allo-reactive T cell responses recognizing minor histocompatibility antigens (MiHA). Yet, tumor immune escape mechanisms can cause failure of T cell immunity, leading to relapse. Tumor cells display low expression of co-stimulatory molecules and can up-regulate co-inhibitory molecules that, upon ligation with their counter receptors on the tumor-reactive T cells, inhibit T cell functionality...
November 29, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29191508/in-vivo-performance-of-freeze-dried-decellularized-pulmonary-heart-valve-allo-and-xenografts-orthotopically-implanted-into-juvenile-sheep
#12
Tobias Goecke, Karolina Theodoridis, Igor Tudorache, Anatol Ciubotaru, Serghei Cebotari, Robert Ramm, Klaus Höffler, Samir Sarikouch, Andrés Vásquez-Rivera, Axel Haverich, Willem F Wolkers, Andres Hilfiker
The decellularization of biological tissues decreases immunogenicity, allows repopulation with cells, and may lead to improved long-term performance after implantation. Freeze drying these tissues would ensure off-the-shelf availability, save storage costs, and facilitates easy transport. This study evaluates the in vivo performance of freeze-dried decellularized heart valves in juvenile sheep. TritonX-100 and sodium dodecylsulfate decellularized ovine and porcine pulmonary valves (PV) were freeze-dried in a lyoprotectant sucrose solution...
November 27, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29187429/risk-factors-for-cytomegalovirus-infection-after-allogeneic-hematopoietic-cell-transplantation-in-malignancies-proposal-for-classification
#13
REVIEW
Magdalena Dziedzic, Iwona Sadowska-Krawczenko, Jan Styczynski
AIM: To identify and classify risk factors for cytomegalovirus (CMV) infection and disease in patients receiving allogeneic hematopoietic stem cell transplantation (allo-HSCT), treated mainly for acute leukemia. MATERIALS AND METHODS: A literature search was performed;eligible trials were clinical studies assessing the risk factors for CMV infection or disease in multivariate analysis. RESULTS: Early reactivation in the setting of allo-HSCT took place mainly in patients without CMV prophylaxis, while late reactivation mainly in those patients who had completed previous prophylaxis or were on anti-CMV strategy based on pre-emptive prophylaxis...
December 2017: Anticancer Research
https://www.readbyqxmd.com/read/29182633/extensive-virologic-and-immunologic-characterization-in-an-hiv-infected-individual-following-allogeneic-stem-cell-transplant-and-analytic-cessation-of-antiretroviral-therapy-a-case-study
#14
Nathan W Cummins, Stacey Rizza, Mark R Litzow, Stephane Hua, Guinevere Q Lee, Kevin Einkauf, Tae-Wook Chun, Frank Rhame, Jason V Baker, Michael P Busch, Nicolas Chomont, Patrick G Dean, Rémi Fromentin, Ashley T Haase, Dylan Hampton, Sheila M Keating, Steven M Lada, Tzong-Hae Lee, Sekar Natesampillai, Douglas D Richman, Timothy W Schacker, Stephen Wietgrefe, Xu G Yu, Joseph D Yao, John Zeuli, Mathias Lichterfeld, Andrew D Badley
BACKGROUND: Notwithstanding 1 documented case of HIV-1 cure following allogeneic stem cell transplantation (allo-SCT), several subsequent cases of allo-SCT in HIV-1 positive individuals have failed to cure HIV-1 infection. The aim of our study was to describe changes in the HIV reservoir in a single chronically HIV-infected patient on suppressive antiretroviral therapy who underwent allo-SCT for treatment of acute lymphoblastic leukemia. METHODS AND FINDINGS: We prospectively collected peripheral blood mononuclear cells (PBMCs) by leukapheresis from a 55-year-old man with chronic HIV infection before and after allo-SCT to measure the size of the HIV-1 reservoir and characterize viral phylogeny and phenotypic changes in immune cells...
November 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29178588/early-barriers-to-neonatal-porcine-islet-engraftment-in-a-dual-transplant-model
#15
K P Samy, R P Davis, Q Gao, B M Martin, M Song, J Cano, A B Farris, A McDonald, E K Gall, C R Dove, F V Leopardi, T How, K D Williams, G R Devi, B H Collins, A D Kirk
Porcine islet xenografts have the potential to provide an inexhaustible source of islets for β cell replacement. Proof-of-concept has been established in nonhuman primates. However, significant barriers to xenoislet transplantation remain, including, the poorly understood instant blood mediated inflammatory reaction (IBMIR), and a thorough understanding of early xeno-specific immune responses. A paucity of data exist comparing xeno-specific immune responses to allo-islet responses in primates. We recently developed a dual islet transplant model, which enables direct histological comparison of early engraftment immunobiology...
November 25, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29176649/no-evidence-for-social-immunity-in-co-founding-queen-associations
#16
Timothée Brütsch, Amaury Avril, Michel Chapuisat
Ant queens often associate to found new colonies, yet the benefits of this behaviour remain unclear. A major hypothesis is that queens founding in groups are protected by social immunity and can better resist disease than solitary queens, due to mutual grooming, sharing of antimicrobials, or higher genetic diversity among their workers. We tested this hypothesis by manipulating the number of queens in incipient colonies of Lasius niger and measuring their resistance to the fungal entomopathogen Metarhizium brunneum...
November 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29174516/retracted-delayed-hemolytic-transfusion-reaction-and-hyperhemolysis-syndrome-without-detectable-alloantibodies-or-autoantibodies-in-a-patient-with-sickle-cell-disease-a-fatal-case-report-and-literature-review
#17
Basile Nsimba
L'éditeur a le regret de vous informer que cet article a déjà été publié dans: Journal of Blood Disorders & Transfusion, 2017, 8:4. DOI: 10.4172/2155-9864.1000388. Cette seconde publication faite par erreur a été retirée.
November 22, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29146013/-chronic-histiocytic-intervillositis-diagnosis-and-management
#18
A Mekinian, N Costedoat-Chalumeau, L Carbillon, A Coulomb-L'Hermine, V Le Guern, A Masseau, E Lazaro, J Cohen, M Bornes, G Kayem, O Fain
Chronic intervillositis is a rare condition, which is associated with severe obstetrical outcome and high recurrence rate. Obstetrical adverse events are intrauterine growth restriction, recurrent early miscarriages, intrauterine deaths and prematurity by placental insufficiency. The determination of the extension and the intensity of the chronic intervillositis are not currently standardized. High rates of recurrence have been described, but actually there is no reliable predictive biomarker. No treatment is currently validated, but the use of immunomodulatory drugs could be justified by the possible autoimmune or allo-immune origin...
November 13, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/29145997/correlation-of-graft-immune-composition-with-outcomes-after-allogeneic-stem-cell-transplantation-moving-towards-a-perfect-transplant
#19
REVIEW
Guang Gu, Jian-Zhu Yang, Li-Xia Sun
Allogeneic stem cell transplantation (allo-SCT) offers an important curative therapy for hematological malignancies and other diseases. A number of studies have demonstrated the association of immune compositions in allografts with outcomes after allo-SCT, which promote graft engineering to improve transplant prognosis. This review summarizes the advances in investigating the correlation of the graft immune compositions with transplant outcomes in different transplant modalities, focusing on the immune subsets likely to have the greatest impact on clinical outcomes...
November 7, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/29145950/a-combination-of-allogeneic-stem-cells-promotes-cardiac-regeneration
#20
Makoto Natsumeda, Victoria Florea, Angela C Rieger, Bryon A Tompkins, Monisha N Banerjee, Samuel Golpanian, Julia Fritsch, Ana Marie Landin, Nilesh D Kashikar, Vasileios Karantalis, Viky Y Loescher, Kostas E Hatzistergos, Luiza Bagno, Cristina Sanina, Muzammil Mushtaq, Jose Rodriguez, Marcos Rosado, Ariel Wolf, Kevin Collon, Louis Vincent, Anthony J Kanelidis, Ivonne H Schulman, Raul Mitrani, Alan W Heldman, Wayne Balkan, Joshua M Hare
BACKGROUND: The combination of autologous mesenchymal stem cells (MSCs) and cardiac stem cells (CSCs) synergistically reduces scar size and improves cardiac function in ischemic cardiomyopathy. Whereas allogeneic (allo-)MSCs are immunoevasive, the capacity of CSCs to similarly elude the immune system remains controversial, potentially limiting the success of allogeneic cell combination therapy (ACCT). OBJECTIVES: This study sought to test the hypothesis that ACCT synergistically promotes cardiac regeneration without provoking immunologic reactions...
November 14, 2017: Journal of the American College of Cardiology
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