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https://www.readbyqxmd.com/read/28098808/infectious-bursal-disease-virus-host-interactions-multifunctional-viral-proteins-that-perform-multiple-and-differing-jobs
#1
REVIEW
Yao Qin, Shijun J Zheng
Infectious bursal disease (IBD) is an acute, highly contagious and immunosuppressive poultry disease caused by IBD virus (IBDV). The consequent immunosuppression increases susceptibility to other infectious diseases and the risk of subsequent vaccination failure as well. Since the genome of IBDV is relatively small, it has a limited number of proteins inhibiting the cellular antiviral responses and acting as destroyers to the host defense system. Thus, these virulence factors must be multifunctional in order to complete the viral replication cycle in a host cell...
January 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28098596/erythema-nodosum-leprosum-like-lesions-are-a-histopathologic-pattern-in-whipple-s-disease-and-a-sign-of-the-immune-reconstitution-inflammatory-syndrome-a-case-series-and-review-of-the-literature
#2
Julia Liersch, Agnès Carlotti, Anne Theunis, Alexandra Leonard, Mary Barrett, John Andrew Carlson, Jörg Schaller
Inflammatory and subcutaneous nodules can arise in treated and untreated cases of Whipple disease (WD). The inflammatory immune reconstitution syndrome describes paradoxical clinical inflammatory worsening of a preexisting condition because of a return of immune function. Clinicopathologic examination of 4 patients with WD who presented with erythema nodosum leprosum (ENL)-like lesions and the findings of a systematic review of this phenomenon revealed that ENL-like lesions occurred in predominantly middle-aged male patients who suffered from WD, mostly on the legs...
January 10, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28098569/human-papillomavirus-genotyping-of-incidental-malignant-and-premalignant-lesions-on-hemorrhoidectomy-specimens
#3
Yiang Hui, M Ruhul Quddus, Jayasimha N Murthy, Dongfang Yang, C James Sung, Shaolei Lu, Murray B Resnick, Li Juan Wang
Routine histopathologic examination of hemorrhoidectomy specimens is controversial having been described as not useful and expensive with few of these common cases demonstrating incidental lesions. However, unexpected premalignant and malignant lesions have been detected on excised hemorrhoids. The high-risk human papillomavirus (HR-HPV) types associated with these incidentally identified high-grade lesions are presently unknown. We aimed to identify cases of incidental high-grade anal intraepithelial neoplasia (HG-AIN) and anal squamous cell carcinoma incidentally discovered on hemorrhoidectomy specimens, genotype HR-HPVs from these lesions, and assess p53 and p16 expression by immunohistochemistry to identify risk factors for their development...
January 16, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28098393/clinical-and-histopathological-features-of-cutaneous-nontuberculous-mycobacterial-infection-a-review-of-13-cases
#4
Jing Jing Li, Rohan Beresford, Janet Fyfe, Christopher Henderson
BACKGROUND: The incidence of cutaneous nontuberculous mycobacterial (NTM) infection has increased in recent decades due to widespread use of immunosuppressive therapy and better detection methods. The histopathology of cutaneous NTM infection is not pathognomic and the organisms are slow and difficult to culture, making diagnosis challenging. METHODS: We reviewed the clinical and histopathological features of 13 cases of cutaneous NTM infection, and performed panmycobacterial polymerase chain reaction (PCR) on the paraffin blocks...
January 18, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28098169/ifn-%C3%AE-regulates-human-dental-pulp-stem-cells-behavior-via-nf-%C3%AE%C2%BAb-and-mapk-signaling
#5
Xinyao He, Wenkai Jiang, Zhirong Luo, Tiejun Qu, Zhihua Wang, Ningning Liu, Yaqing Zhang, Paul R Cooper, Wenxi He
During caries, dental pulp expresses a range of pro-inflammatory cytokines in response to the infectious challenge. Interferon gamma (IFN-γ) is a dimerized soluble cytokine, which is critical for immune responses. Previous study has demonstrated that IFN-γ at relative high concentration (100 ng/mL) treatment improved the impaired dentinogenic and immunosuppressive regulatory functions of disease-derived dental pulp stem cells (DPSCs). However, little is known about the regulatory effects of IFN-γ at relative low concentration on healthy DPSC behavior (including proliferation, migration, and multiple-potential differentiation)...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097811/fc-silent-anti-cd154-domain-antibody-effectively-prevents-non-human-primate-renal-allograft-rejection
#6
Steven C Kim, Walter Wakwe, Laura B Higginbotham, David V Mathews, Cynthia P Breeden, Allison C Stephenson, Joe Jenkins, Elizabeth Strobert, Karen Price, Laura Price, Robert Kuhn, Haiqing Wang, Aaron Yamniuk, Suzanne Suchard, Alton B Farris, Thomas C Pearson, Christian P Larsen, Mandy L Ford, Anish Suri, Steven Nadler, Andrew B Adams
The advent of costimulation blockade provides the prospect for targeted therapy with improved graft survival in transplant patients. Perhaps the most effective costimulation blockade in experimental models is the use of reagents to block the CD40/CD154 pathway. Unfortunately, successful clinical translation of anti-CD154 therapy has not been achieved. In an attempt to develop an agent that is as effective as previous CD154 blocking antibodies but lacks the risk of thromboembolism, we evaluated the efficacy and safety of a novel anti-human CD154 domain antibody (dAb, BMS-986004)...
January 17, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28097735/autoimmune-enteropathy-and-hepatitis-in-pediatric-heart-transplant-recipient
#7
Kimberly Lewis, Ryan Butts, J Antonio Quiros, Michelle Hudspeth, Katherine Twombley, Andrew Savage, Sally Self, Ali Burnette, Shaoli Sun
AIE is a rare disorder in children that presents with severe diarrhea and malabsorption, caused by immune-mediated damage to intestinal mucosa. AIE is often associated with various syndromes of immunodeficiency including IPEX syndrome (immune dysregulation, polyendocrinopathy and enteropathy, X-linked). Dysfunctional T regulatory cells are the source of pathology in both IPEX syndrome and AIE as they are essential in maintaining tolerance to self-antigens and eliminating autoreactive B cells. This case report describes a 10-year-old cardiac transplant and total thymectomy patient on chronic immunosuppression with tacrolimus that presented with AIE and extraintestinal manifestations of cyclical hepatitis...
January 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28097424/analysis-of-the-spleen-proteome-of-chickens-infected-with-reticuloendotheliosis-virus
#8
Mei Xue, Yan Zhao, Shunlei Hu, Xingming Shi, Hongyu Cui, Yunfeng Wang
Infection with reticuloendotheliosis virus (REV), a gammaretrovirus in the family Retroviridae, can result in immunosuppression and subsequent increased susceptibility to secondary infections. In the present study, we identified differentially expressed proteins in the spleens of chickens infected with the REV-A HLJ07I strain, using two-dimensional gel electrophoresis on samples from time points coinciding with different phases of the REV life cycle. Differentially expressed proteins were identified using one-dimensional liquid chromatography electrospray ionization tandem mass spectrometry (1D LC ESI MS/MS)...
January 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28097392/-tapering-and-termination-of-immunosuppressive-therapy
#9
EDITORIAL
P M Villiger, U Müller-Ladner
No abstract text is available yet for this article.
January 17, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28097391/-tapering-and-termination-of-immunosuppressive-therapy-systemic-lupus-erythematosus
#10
REVIEW
M Aringer, N Leuchten, R Fischer-Betz
Similar to patients with other rheumatic diseases, patients with systemic lupus erythematosus (SLE) nowadays can also have the desire to terminate immunosuppressive and immunomodulatory medications. In order to provide appropriate advice to patients, the two main issues are the risk of severe adverse events under long-term therapy with any drug and the perceived risk of a flare, in particular of severe flares. The risks of long-term therapy vary greatly between drugs, ranging from severe unacceptable risks with cyclophosphamide and higher dose glucocorticoids to low risks usually outweighed by long-term benefits with hydroxychloroquine...
January 17, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28097270/prospective-study-analyzing-risk-factors-and-characteristics-of-healthcare-associated-infections-in-a-urology-ward
#11
José Medina-Polo, Raquel Sopeña-Sutil, Raúl Benítez-Sala, Alba Lara-Isla, Manuel Alonso-Isa, Javier Gil-Moradillo, Juan Justo-Quintas, Esther García-Rojo, Daniel Antonio González-Padilla, Juan Bautista Passas-Martínez, Ángel Tejido-Sánchez
PURPOSE: Healthcare-associated infections (HAIs) in urological patients have special features due to specific risk factors. Our objective was to evaluate the characteristics and risk factors for HAIs in patients hospitalized in a Urology ward. MATERIALS AND METHODS: We evaluated prospectively, from 2012 to 2015, the incidence, types and risk factor for HAIs, microbiological and resistance patterns. RESULTS: The incidence of HAIs was 6.3%. The most common types were urinary infections (70...
January 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28096513/targeting-tnfr2-with-antagonistic-antibodies-inhibits-proliferation-of-ovarian-cancer-cells-and-tumor-associated-tregs
#12
Heather Torrey, John Butterworth, Toshiyuki Mera, Yoshiaki Okubo, Limei Wang, Danielle Baum, Audrey Defusco, Sara Plager, Sarah Warden, Daniel Huang, Eva Vanamee, Rosemary Foster, Denise L Faustman
Major barriers to cancer therapy include the lack of selective inhibitors of regulatory T cells (Tregs) and the lack of broadly applicable ways to directly target tumors through frequently expressed surface oncogenes. Tumor necrosis factor receptor 2 (TNFR2) is an attractive target protein because of its restricted abundance to highly immunosuppressive Tregs and oncogenic presence on human tumors. We characterized the effect of TNFR2 inhibition using antagonistic antibodies. In culture-based assays, we found that two TNFR2 antagonists inhibited Treg proliferation, reduced soluble TNFR2 secretion from normal cells, and enabled T effector cell expansion...
January 17, 2017: Science Signaling
https://www.readbyqxmd.com/read/28096506/targeting-tnfr2-an-immune-checkpoint-stimulator-and-oncoprotein-is-a-promising-treatment-for-cancer
#13
REVIEW
Xin Chen, Joost J Oppenheim
Tumor necrosis factor receptor 2 (TNFR2) is expressed both by some cancer cells and by tumor-infiltrating immunosuppressive CD4(+)FoxP3(+) regulatory T cells (Tregs). TNFR2 stimulates the activation and proliferation of Tregs, a major checkpoint of antitumor immune responses, and promotes cancer cell survival and tumor growth. In this issue of Science Signaling, Torrey et al found that dominant antagonistic antibodies against human TNFR2 may be a potential therapy for ovarian cancer patients by simultaneously suppressing Treg activity and inducing the death of the cancer cells...
January 17, 2017: Science Signaling
https://www.readbyqxmd.com/read/28096458/more-severe-disease-and-slower-recovery-in-younger-patients-with-anti-3-hydroxy-3-methylglutaryl-coenzyme-a-reductase-associated-autoimmune-myopathy
#14
Eleni Tiniakou, Iago Pinal-Fernandez, Thomas E Lloyd, Jemima Albayda, Julie Paik, Jessie L Werner, Cassie A Parks, Livia Casciola-Rosen, Lisa Christopher-Stine, Andrew L Mammen
OBJECTIVE: To study disease severity and response to therapy in a large cohort of patients with anti-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR)-associated myositis. METHODS: Muscle strength, creatine kinase levels and treatments were assessed in anti-HMGCR-positive patients at each clinical visit. Univariate and multivariate analyses were used to analyse the influence of clinical characteristics on strength and the change in strength over time. Whole exome sequencing was performed in a subset of patients...
January 17, 2017: Rheumatology
https://www.readbyqxmd.com/read/28096371/cox2-mpges1-pge2-pathway-regulates-pd-l1-expression-in-tumor-associated-macrophages-and-myeloid-derived-suppressor-cells
#15
Victor Prima, Lyudmila N Kaliberova, Sergey Kaliberov, David T Curiel, Sergei Kusmartsev
In recent years, it has been established that programmed cell death protein ligand 1 (PD-L1)-mediated inhibition of activated PD-1(+) T lymphocytes plays a major role in tumor escape from immune system during cancer progression. Lately, the anti-PD-L1 and -PD-1 immune therapies have become an important tool for treatment of advanced human cancers, including bladder cancer. However, the underlying mechanisms of PD-L1 expression in cancer are not fully understood. We found that coculture of murine bone marrow cells with bladder tumor cells promoted strong expression of PD-L1 in bone marrow-derived myeloid cells...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096300/enhanced-suppression-of-polyclonal-cd8-25-regulatory-t-cells-via-exosomal-arming-of-antigen-specific-peptide-mhc-complexes
#16
Chuanyong Mu, Xueshu Zhang, Lu Wang, Aizhang Xu, Khawaja Ashfaque Ahmed, Xueqin Pang, Rajni Chibbar, Andrew Freywald, Jianan Huang, Yehan Zhu, Jim Xiang
Compared with CD4(+)25(+) regulatory T cells (Tregs), the mechanisms for natural, polyclonal CD8(+)25(+) Treg immune suppression have been significantly less studied. We previously showed that polyclonal T cells can acquire antigen-specific targeting activity through arming with exosomal peptide-MHC (pMHC). In this study, we assessed the suppressive effect of CD8(+)25(+) Tregs or CD8(+)25(+) Tregs armed with ovalbumin (OVA)-specific exosomes on other immune cells and OVA-specific dendritic cell (DCOVA)-stimulated antitumor immunity...
January 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28096282/the-effect-of-mtor-inhibitors-on-respiratory-infections-in-lymphangioleiomyomatosis
#17
REVIEW
Andrew M Courtwright, Hilary J Goldberg, Elizabeth Petri Henske, Souheil El-Chemaly
Lymphangioleiomyomatosis (LAM) is a destructive cystic lung disease. Mammalian target of rapamycin (mTOR) inhibitors are the primary treatment for LAM but it is unknown whether these immunosuppressing medications increase the risk for or the severity of respiratory infections in LAM patients.We searched multiple databases for original articles that reported the rate of respiratory infections in LAM patients treated with mTOR inhibitors or placebo. We calculated incidence rates for respiratory infections in these groups and incidence rate ratios for respiratory infections and severe respiratory infections in mTOR inhibitors treated versus placebo treated patients...
January 2017: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/28096226/disseminated-adenovirus-infection-causing-severe-ards
#18
Steven J Campbell, Jessica A Kynyk, John A Davis
A previously healthy young man with a rare genetic condition presented with severe acute respiratory distress syndrome secondary to pneumonia with septic shock. He did not improve with conventional therapy for his known causal organism thus prompting further workup. He was found to be profoundly immunosuppressed raising our suspicion for atypical organisms. A bronchoalveolar lavage sample was positive via PCR for adenovirus which we suspect exacerbated a pre-existing bacterial pneumonia and led to a severe and non-responsive respiratory failure...
January 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28096088/how-i-treat-acquired-aplastic-anemia
#19
Andrea Bacigalupo
Acquired severe aplastic anemia (SAA) is a rare hematologic disease associated with significant morbidity and mortality. Immune destruction of hemopoietic stem cells, plays an important role in the pathogenesis, as shown by successful treatment with immunosuppressive agents (IST), leading to transfusion independence, or complete recovery of peripheral blood counts, in a proportion of patients. Growth factors, can be combined with IST, and may improve response rates, as recently shown with thrombopoietin analogs...
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28096056/common-issues-in-the-management-of-patients-on-the-waiting-list-and-after-liver-transplantation-hcv-hbv-alcoholic-liver-disease-immunosuppression
#20
REVIEW
Patrizia Burra, Luca Saverio Belli, Stefano Ginanni Corradini, Riccardo Volpes, Marco Marzioni, Edoardo Giannini, Pierluigi Toniutto
The present document contains the recommendations of an expert panel of transplant hepatologists, appointed by the Italian Association for the Study of the Liver (AISF), on how to manage the most common aspects of liver transplantation: the topics covered include: new treatments for HCV in patients on the waiting list for liver transplantation; antiviral treatments in patients with HCV recurrence after liver transplantation; prophylaxis for HBV recurrence after liver transplantation; indications for liver transplantation in alcoholic liver disease; and Immunosuppressive therapy...
December 31, 2016: Digestive and Liver Disease
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