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https://www.readbyqxmd.com/read/28100001/transplantation-tolerance-don-t-forget-about-the-b-cells
#1
REVIEW
Anita S Chong, Stella H Khiew
Establishing a state of transplantation tolerance that leads to indefinite graft survival without the need for lifelong immunosuppression has been successfully achieved in limited numbers of transplant recipients in the clinic. These successes led to studies aimed at identifying potential biomarkers that diagnose allograft tolerance and identify the patients most amenable to drug minimization, and implicated an enriched B cell signature of tolerance. The emergence of a specialized subset of regulatory B cell (Bregs) that possess immune-modulatory function in inflammation and autoimmune disease, raised the possibility that Bregs play critical roles in the promotion of transplantation tolerance and that Bregs are the underlying explanation for the B cell signature of tolerance...
January 18, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28099538/psoriasis-treatment-considerations-in-military-patients-unique-patients-unique-drugs
#2
Thomas Evans, Nathan Davidson, Nicholas Logemann
Psoriasis is a common dermatologic problem with a chronic and sometimes debilitating course. Psoriasis can impair a service member's ability to perform job-related activities and should certainly be treated; however, use of immunosuppressive treatments can prevent deployment to strategic locations around the world for numerous reasons, such as the need for laboratory monitoring, minimal access to climate-controlled storage, and potential increased risk of exposure to virulent pathogens while on these medications...
December 2016: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/28095561/self-resolving-eruptive-keratoacanthomas-after-full-field-erbium-laser-resurfacing
#3
Eileen L Axibal, Julia D Kreger, Michael E Contreras, Joel L Cohen
Keratoacanthoma (KA) is a subtype of squamous cell carcinoma whose development has been linked to excessive sun exposure, immunosuppression, and trauma. Given the rapidly expanding therapeutic armamentarium for anti-aging modalities in dermatology, reports of KA secondary to invasive cosmetic procedures are on the rise. We present a case of eruptive KAs after full- eld ablative Erbium:YAG 2940 nm laser resurfacing of the face that resolved with minimal intervention. This case demonstrates the potential for a rare yet signi cant laser complication that may warrant discussion during the consenting process...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095450/non-lytic-egression-of-infectious-bursal-disease-virus-ibdv-particles-from-infected-cells
#4
Fernando Méndez, Nicolás Romero, Liliana L Cubas, Laura R Delgui, Dolores Rodríguez, José F Rodríguez
Infectious bursal disease virus (IBDV), a member of the Birnaviridae family, is responsible for a devastating immunosuppressive disease affecting juvenile domestic chickens. IBDV particles are naked icosahedrons enclosing a bipartite double-stranded RNA genome harboring three open reading frames (ORF). One of these ORFs codes for VP5, a non-structural polypeptide dispensable for virus replication in tissue culture but essential for IBDV pathogenesis. Using two previously described recombinant viruses, whose genomes differ in a single nucleotide, expressing or not the VP5 polypeptide, we have analyzed the role of this polypeptide during the IBDV replication process...
2017: PloS One
https://www.readbyqxmd.com/read/28089478/the-clinical-course-of-minimal-change-nephrotic-syndrome-with-onset-in-adulthood-or-late-adolescence-a-case-series
#5
Rutger J Maas, Jeroen K Deegens, Johan R Beukhof, Louis J Reichert, Marc A Ten Dam, Jaap J Beutler, A Warmold L van den Wall Bake, Pieter L Rensma, Constantijn J Konings, Daniel A Geerse, Geert W Feith, Willi H Van Kuijk, Jack F Wetzels
BACKGROUND: Few studies have examined the treatment and outcome of adult-onset minimal change nephrotic syndrome (MCNS). We retrospectively studied 125 patients who had MCNS with onset in either adulthood or late adolescence. Presenting characteristics, duration of initial treatment and response to treatment, relapse patterns, complications, and long-term outcome were studied. STUDY DESIGN: Case series. SETTING & PARTICIPANTS: Patients with new-onset nephrotic syndrome 16 years or older and a histologic diagnosis of MCNS in 1985 to 2011 were identified from pathology records of 10 participating centers...
January 12, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28087591/clinical-trials-in-antineutrophil-cytoplasmic-antibody-associated-vasculitis-what-we-have-learnt-so-far-and-what-we-still-have-to-learn
#6
Divi Cornec, Emilie Cornec-Le Gall, Ulrich Specks
The prognosis of the antineutrophil cytoplasmic antibody associated vasculitides (AAV), microscopic polyangiitis (MPA), granulomatosis with polyangiitis (GPA) and eosinophilic GPA (EGPA), has been fundamentally improved over the last five decades by the use of glucocorticoids and immunosuppressants, turning them from consistently fatal diseases into chronic conditions. The long-term course is now largely determined by the frequency of disease flares and by accruing damage caused by disease activity and treatment-related comorbidities...
January 12, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28079976/maresin-1-induces-a-novel-pro-resolving-phenotype-in-human-platelets
#7
Katie L Lannan, Sherry L Spinelli, Neil Blumberg, Richard P Phipps
BACKGROUND: Antiplatelet therapy is a cornerstone of modern medical practice and is routinely employed to reduce the likelihood of myocardial infarction, thrombosis, and stroke. However, current antiplatelet therapies, such as aspirin, often have adverse side effects, including increased risk of bleeding, and some patients are relatively "aspirin-resistant". Platelets are intimately involved in hemostasis and inflammation, and clinical consequences are associated with excessive or insufficient platelet activation...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28073208/experience-of-percutaneous-access-under-ultrasound-guidance-in-renal-transplant-patients-with-allograft-lithiasis
#8
Silvano Palazzo, Ottavio Colamonico, Saverio Forte, Matteo Matera, Giuseppe Lucarelli, Pasquale Ditonno, Michele Battaglia, Pasquale Martino
OBJECTIVE: Urolithiasis of the transplanted kidney has an incidence of 0.2 to 1.7%, it increases the risk of infection in immunosuppressed patients and it can lead to ureteral obstruction that is often associated with deterioration of renal function. Urolithiasis of the transplanted kidney has different characteristics compared to the native kidney, due to the absence of innervation, which does not lead to colic pain. Percutaneous approach is an optimal choice in transplant patients. MATERIAL AND METHODS: Here we report our experience in two cadaveric transplant patients with urolithiasis...
December 30, 2016: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/28061365/primer-design-for-snp-genotyping-based-on-allele-specific-amplification-application-to-organ-transplantation-pharmacogenomics
#9
Luis A Tortajada-Genaro, Rosa Puchades, Ángel Maquieira
Diagnostic methods based on single nucleotide polymorphism (SNP) biomarkers are essential for the real adoption of personalized medicine. Allele specific amplification in a homogeneous format or combined to microarray hybridization are powerful approaches for SNP genotyping. However, primers must be properly selected to minimize cross-reactivity, dimer formation and nonspecific hybridization. This study presents a design workflow diagram for the selection of required oligonucleotides for multiplex assays. Based on thermodynamic restrictions, the oligonucleotide sets are chosen for a specific amplification of wild- and mutant-type templates...
December 29, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28060025/antibody-mediated-rejection-what-is-the-clinical-relevance
#10
Rachel Hogen, Joseph DiNorcia, Kiran Dhanireddy
PURPOSE OF REVIEW: The review outlines the diagnosis, clinical implications, and treatment strategies for acute and chronic antibody-mediated rejection (AMR) after orthotopic liver transplantation (OLT). RECENT FINDINGS: A combination of clinical work-up, histopathology, C4d staining, and donor-specific antibody (DSA) should be used to diagnose AMR. The differential diagnosis for idiopathic fibrosis now includes chronic AMR. Characterization of pathogenic DSA continues to progress...
January 3, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28058228/corticosteroid-minimization-in-renal-transplantation-careful-patient-selection-enables-feasibility
#11
Georgios Vlachopanos, Julie M Bridson, Ajay Sharma, Ahmed Halawa
AIM: To explore the benefits and harms of corticosteroid (CS) minimization following renal transplantation. METHODS: CS minimization attempts to improve cardiovascular risk factors (hypertension, diabetes, dyslipidemia), to enhance growth in children, to ameliorate bone disease and to lead to better compliance with immunosuppressive agents. Nevertheless, any benefit must be carefully weighed against the reduction in net immunosuppression and the potential harm to renal allograft function and survival...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28049637/low-immunosuppressive-burden-after-hla-matched-related-or-unrelated-bmt-using-post-transplantation-cyclophosphamide
#12
Christopher G Kanakry, Javier Bolaños-Meade, Yvette L Kasamon, Marianna Zahurak, Nadira Durakovic, Terry Furlong, Marco Mielcarek, Marta Medeot, Ivana Gojo, B Douglas Smith, Jennifer A Kanakry, Ivan M Borrello, Robert A Brodsky, Douglas E Gladstone, Carol Ann Huff, William H Matsui, Lode J Swinnen, Kenneth R Cooke, Richard F Ambinder, Ephraim J Fuchs, Marcos J de Lima, Borje S Andersson, Ravi Varadhan, Paul V O'Donnell, Richard J Jones, Leo Luznik
The intensive and prolonged immunosuppressive therapy required to prevent or treat graft-versus-host disease (GVHD) after allogeneic blood or marrow transplantation (alloBMT) puts patients at substantial risk for life-threatening infections, organ toxicity, and disease relapse. Post-transplantation cyclophosphamide (PTCy) can function as single-agent GVHD prophylaxis after myeloablative, HLA-matched-related (MRD) or HLA-matched-unrelated (MUD) T-cell-replete bone marrow allografting, obviating the need for additional prophylactic immunosuppression...
January 3, 2017: Blood
https://www.readbyqxmd.com/read/28049555/foxp3-positive-regulatory-t-cells-and-kidney-allograft%C3%A2-tolerance
#13
REVIEW
Alessandro Alessandrini, Laurence A Turka
Normal immune homeostasis is achieved by several mechanisms, and prominent among them is immunoregulation. Although several types of regulatory lymphocyte populations have been described, CD4 T cells expressing the FOXP3 transcription factor (FOXP3-positive regulatory T cells [FOXP3(+) Tregs]) are the best understood. This population of cells is critical for maintaining self-tolerance throughout the life of the organism. FOXP3(+) Tregs can develop within the thymus, but also under select circumstances, naive peripheral T cells can be induced to express FOXP3 and become stable Tregs as well...
December 31, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28045880/targeted-complement-inhibition-protects-vascularized-composite-allografts-from-acute-graft-injury-and-prolongs-graft-survival-when-combined-with-subtherapeutic-cyclosporine-a-therapy
#14
Peng Zhu, Stefanie R Bailey, Biao Lei, Chrystal M Paulos, Carl Atkinson, Stephen Tomlinson
BACKGROUND: Recipients of vascularized composite allografts require aggressive and life-long immunosuppression, and since the surgery is usually performed in nonlife threatening situations, the development of strategies to minimize immunosuppression is especially pertinent for this procedure. We investigated how complement affects acute graft injury, alloimmunity, and immunosuppressive therapy. METHODS: Vascularized composite allografts were transplanted from Balb/C to C57BL/6 mice that were complement deficient (C3 or double C3a Receptor (R)/C5aR), or treated with a targeted complement inhibitor (CR2-Crry)...
December 30, 2016: Transplantation
https://www.readbyqxmd.com/read/28042124/improvement-in-herpes-zoster-vaccination-in-patients-with-rheumatoid-arthritis-a-quality-improvement-project
#15
Heena Sheth, Larry Moreland, Hilary Peterson, Rohit Aggarwal
OBJECTIVE: To improve herpes zoster (HZ) vaccination rates in high-risk patients with rheumatoid arthritis (RA) being treated with immunosuppressive therapy. METHODS: This quality improvement project was based on the pre- and post-intervention design. The project targeted all patients with RA over the age of 60 years while being treated with immunosuppressive therapy (not with biologics) seen in 13 rheumatology outpatient clinics. The study period was from July 2012 to June 2013 for the pre-intervention and February 2014 to January 2015 for the post-intervention phase...
January 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28041666/prediabetes-in-pediatric-recipients-of-liver-transplant-mechanism-and-risk-factors
#16
Emily R Perito, Robert H Lustig, Philip Rosenthal
OBJECTIVE: To investigate the role of calcineurin inhibitor exposure and states of insulin resistance-obesity and adolescence-in prediabetes after pediatric liver transplant via oral glucose tolerance testing, which previously has not been done systematically in these at-risk youths. STUDY DESIGN: This was a cross-sectional study of 81 pediatric recipients of liver transplant. Prediabetes was defined as impaired glucose tolerance (IGT; glucose ≥140 mg/dL at 2 hours) or impaired fasting glucose (IFG, ≥100 mg/dL)...
December 29, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/28009481/renal-allograft-survival-in-nonhuman-primates-infused-with-donor-antigen-pulsed-autologous-regulatory-dendritic-cells
#17
M B Ezzelarab, D Raich-Regue, L Lu, A F Zahorchak, A Perez-Gutierrez, A Humar, M Wijkstrom, M Minervini, R W Wiseman, D K C Cooper, A E Morelli, A W Thomson
Systemic administration of autologous regulatory dendritic cells (DCreg; unpulsed or pulsed with donor antigen [Ag]), prolongs allograft survival and promotes transplant tolerance in rodents. Here, we demonstrate that nonhuman primate (NHP) monocyte-derived DCreg pre-loaded with cell membrane vesicles from allogeneic PBMC, induce T cell hyporesponsiveness to donor alloAg in vitro. These donor alloAg-pulsed autologous DCreg (1.4-3.6 x 10(6) /kg) were administered intravenously, one day before MHC-mismatched renal transplantation to rhesus monkeys treated with costimulation blockade (cytotoxic T lymphocyte Ag 4 [CTLA4] Ig) and tapered rapamycin...
December 23, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/28003994/immunotherapy-of-malignant-tumors-in-the-brain-how-different-from-other-sites
#18
REVIEW
Valérie Dutoit, Denis Migliorini, Pierre-Yves Dietrich, Paul R Walker
Immunotherapy is now advancing at remarkable pace for tumors located in various tissues, including the brain. Strategies launched decades ago, such as tumor antigen-specific therapeutic vaccines and adoptive transfer of tumor-infiltrating lymphocytes are being complemented by molecular engineering approaches allowing the development of tumor-specific TCR transgenic and chimeric antigen receptor T cells. In addition, the spectacular results obtained in the last years with immune checkpoint inhibitors are transfiguring immunotherapy, these agents being used both as single molecules, but also in combination with other immunotherapeutic modalities...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27990496/lupus-like-immune-complex-mediated-glomerulonephritis-in-patients-with-hepatitis-c-virus-infection-treated-with-oral-interferon-free-direct-acting-antiviral-therapy
#19
Meghan E Sise, Jessica Wisocky, Ivy A Rosales, Donald Chute, Jacinta A Holmes, Kristin M Corapi, Jodie L Babitt, Jessica S Tangren, Nikroo Hashemi, Andrew L Lundquist, Winfred W Williams, David B Mount, Karin L Andersson, Helmut G Rennke, R Neal Smith, Robert Colvin, Ravi I Thadhani, Raymond T Chung
Novel, all-oral interferon-free direct-acting antiviral agents have revolutionized the management of hepatitis C virus (HCV) infection by producing exceptional cure rates with minimal adverse events. While provocation or exacerbation of autoimmunity has been reported in HCV-infected patients receiving interferon, this phenomenon has not been reported in patients receiving interferon-free HCV therapy. We report the occurrence of three cases of lupus-like immune complex-mediated glomerulonephritis occurring shortly after exposure to sofosbuvir-based direct-acting antiviral therapies...
September 2016: KI Reports
https://www.readbyqxmd.com/read/27974559/mtor-promotes-anti-viral-humoral-immunity-by-differentially-regulating-cd4-helper-t-cell-and-b-cell-responses
#20
Lilin Ye, Junghwa Lee, Lifan Xu, Ata-Ur-Rasheed Mohammed, Weiyan Li, J Scott Hale, Wendy G Tan, Tuoqi Wu, Carl W Davis, Rafi Ahmed, Koichi Araki
: mTOR has important roles in regulation of both innate and adaptive immunity but whether and how mTOR modulates humoral immune responses is yet to be fully understood. To address this issue, we examined the effects of rapamycin, a specific inhibitor of mTOR, on B cell and CD4 T cell responses during acute infection with lymphocytic choriomeningitis virus. Rapamycin treatment resulted in suppression of virus-specific B cell responses by inhibiting proliferation of germinal center (GC) B cells...
December 14, 2016: Journal of Virology
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