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Clinical immunology

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https://www.readbyqxmd.com/read/28538014/precision-medicine-in-pediatric-rheumatology
#1
Joo Guan Yeo, Chin Teck Ng, Salvatore Albani
PURPOSE OF REVIEW: Precision medicine is the tailoring of medical care to subcategories of disease. In pediatric rheumatology, these subcategories must first be defined by their specific molecular immunological profiles, and then the effects of growth and puberty, developmental immunological changes, and differences in treatment options and adherence considered when designing therapeutic strategies. In the present review, we summarize the unmet needs in pediatric rheumatology before such precision medical care can be effectively delivered to affected patients...
May 22, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28537908/increased-expression-of-irf8-in-tumor-cells-inhibits-the-generation-of-th17-cells-and-predicts-unfavorable-survival-of-diffuse-large-b-cell-lymphoma-patients
#2
Weijie Zhong, Xin Xu, Zhigang Zhu, Qinghua Du, Hong Du, Li Yang, Yanying Ling, Huabao Xiong, Qingshan Li
The immunological pathogenesis of diffuse large B cell lymphoma (DLBCL) remains elusive. Searching for new prognostic markers of DLBCL is a crucial focal point for clinical scientists. The aim of the present study was to examine the prognostic value of interferon regulatory factor 8 (IRF8) expression and its effect on the development of Th17 cells in the tumor microenvironment of DLBCL patients. Flow cytometry, immunohistochemistry, and quantitative real-time PCR were used to detect the distribution of Th17 cells and related cytokines and IRF8 in tumor tissues from DLBCL patients...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28534812/understanding-the-complex-patterns-observed-during-hepatitis-b-virus-therapy
#3
Andrea Carracedo Rodriguez, Matthias Chung, Stanca M Ciupe
Data from human clinical trials have shown that the hepatitis B virus (HBV) follows complex profiles, such as bi-phasic, tri-phasic, stepwise decay and rebound. We utilized a deterministic model of HBV kinetics following antiviral therapy to uncover the mechanistic interactions behind HBV dynamics. Analytical investigation of the model was used to separate the parameter space describing virus decay and rebound. Monte Carlo sampling of the parameter space was used to determine the virological, pharmacological and immunological factors that separate the bi-phasic and tri-phasic virus profiles...
May 19, 2017: Viruses
https://www.readbyqxmd.com/read/28533435/enzymatic-inactivation-of-endogenous-igg-by-ides-enhances%C3%A2-therapeutic-antibody-efficacy
#4
Sofia Järnum, Anna Runström, Robert Bockermann, Lena Winstedt, Max Crispin, Christian Kjellman
Endogenous plasma IgG sets an immunological threshold that dictates the activity of tumor-directed therapeutic antibodies. Saturation of cellular antibody receptors by endogenous antibody limits antibody-dependent cell-mediated cytotoxicity (ADCC) and antibody dependent cellular phagocytosis (ADCP). Here we show how enzymatic cleavage of IgG using the bacterial enzyme IdeS can be utilized to empty both high and low affinity Fcγ-receptors and clear the entire endogenous antibody pool. Using in vitro models, tumor animal models as well as ex vivo analysis of sera collected during a previous clinical trial with IdeS, we show how clearing of competing plasma antibody levels with IdeS unblocks cellular antibody receptors...
May 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28533400/the-pentameric-complex-drives-immunologically-covert-cell-cell-transmission-of-wild-type-human-cytomegalovirus
#5
Isa Murrell, Carmen Bedford, Kristin Ladell, Kelly L Miners, David A Price, Peter Tomasec, Gavin W G Wilkinson, Richard J Stanton
Human cytomegalovirus (HCMV) strains that have been passaged in vitro rapidly acquire mutations that impact viral growth. These laboratory-adapted strains of HCMV generally exhibit restricted tropism, produce high levels of cell-free virus, and develop susceptibility to natural killer cells. To permit experimentation with a virus that retained a clinically relevant phenotype, we reconstructed a wild-type (WT) HCMV genome using bacterial artificial chromosome technology. Like clinical virus, this genome proved to be unstable in cell culture; however, propagation of intact virus was achieved by placing the RL13 and UL128 genes under conditional expression...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28533209/rationale-and-design-of-a-clinical-trial-to-evaluate-the-safety-and-efficacy-of-intracoronary-infusion-of-allogeneic-human-cardiac-stem-cells-in-patients-with-acute-myocardial-infarction-and-left-ventricular-dysfunction-the-randomized-multicenter-double-blind
#6
Ricardo Sanz-Ruiz, Ana Casado Plasencia, Luis R Borlado, María Eugenia Fernández-Santos, Reem Al-Daccak, Piet Claus, Itziar Palacios, Rafael Sádaba, Dominique Charron, Jan Bogaert, Miguel Mulet, Raquel Yotti, Inmaculada Gilaberte, Antonio Bernad, Javier Bermejo, Stefan Janssens, Francisco Fernández-Avilés
Rationale: Stem cell therapy has increased the therapeutic armamentarium in the fight against ischemic heart disease and heart failure (HF). The administration of exogenous stem cells has been investigated in patients suffering an acute myocardial infarction (AMI) with the final aim of salvaging jeopardized myocardium and preventing left ventricular adverse remodeling and functional deterioration. However, phase I and II clinical trials with autologous and "first-generation" stem cells have yielded inconsistent benefits and mixed results...
May 22, 2017: Circulation Research
https://www.readbyqxmd.com/read/28533000/clinical-immunological-and-microbiological-predictors-of-poor-outcome-in-clostridium-difficile-infection
#7
E Reigadas, L Alcalá, M Marín, A Martín, E Bouza
BACKGROUND: Clostridium difficile infection (CDI) causes increased morbidity and mortality. Clinical data cannot clearly predict poor CDI outcome. Data on the value of microbiological predictors is scarce. OBJECTIVE: To identify early predictors of poor outcome of CDI. METHODS: We prospectively included patients with CDI aged >2years. Clinical, immunological (Toxin B IgG/Ig A and Toxin A IgG/Ig A), microbiological factors (bacterial load, toxin quantification, sporulation, germination, and metronidazole susceptibility) were evaluated to identify early independent predictors of poor outcome...
May 11, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28532574/prevalence-and-correlates-of-hepatitis-c-virus-associated-inflammatory-arthritis-in-a-population-based-cohort
#8
Elizabeth D Ferucci, Tammy L Choromanski, Danielle T Varney, Holly S Ryan, Lisa J Townshend-Bulson, Brian J McMahon, Mark H Wener
OBJECTIVES: The objectives of this study were to determine the prevalence of hepatitis C virus-associated inflammatory arthritis, to describe its clinical and immunologic correlates, and to identify features that are characteristic of arthritis in chronic hepatitis C. METHODS: Participants with chronic hepatitis C infection enrolled in a population-based cohort study in Alaska and who had not received anti-viral treatment for hepatitis C were recruited. In a cross-sectional study, we assessed joint symptoms and signs, performed autoantibody and cytokine testing, and abstracted medical records for features of hepatitis C and arthritis...
April 24, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28532268/allergen-immunotherapy-in-allergic-rhinitis-current-use-and-future-trends
#9
Ludger Klimek, Oliver Pfaar, Jean Bousquet, Gabriela Senti, Thomas Kündig
Type-1 allergies are among the most chronic common diseases of humans. Allergen immunotherapy (AIT) is the only causative and disease-modifying treatment option besides allergen avoidance. Severe systemic adverse allergic reactions may be induced by every AIT treatment. Different approaches have been used to provide safer AIT preparations to lower or even totally overcome this risk. Areas covered: A structured literature recherche in Medline and Pubmed under inclusion of national and international guidelines and Cochrane meta-analyses has been performed aiming at reviewing clinical use of such approaches in AIT...
May 23, 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28530042/growing-up-with-perinatal-hiv-changes-in-clinical-outcomes-before-and-after-transfer-to-adult-care-in-the-uk
#10
Ali Judd, Intira Jeannie Collins, Francesca Parrott, Teresa Hill, Sophie Jose, Deborah Ford, Hibo Asad, Diana M Gibb, Caroline Sabin
INTRODUCTION: With improved survival, adolescents with perinatal HIV (PHIV) are transitioning from paediatric to adult care, but there are few published data on clinical outcomes post-transfer. Using linked data from patients in the national UK/Ireland paediatric cohort (CHIPS) and an adult UK cohort of outpatient clinics (UK CHIC), we describe mortality and changes in immunological status post-transfer. METHODS: Participants in CHIPS aged ≥13 years by the end of 2013 were linked to the UK CHIC database...
May 16, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28529947/immune-checkpoint-blockade-for-hematologic-malignancies-a-review
#11
REVIEW
Matthew J Pianko, Yuzhou Liu, Srishti Bagchi, Alexander M Lesokhin
Immune checkpoint blockade has revolutionized the treatment of cancer, with impressive responses seen in a broad variety of tumor types. Blockade of immune checkpoints and immune signaling antibodies has shown promise in multiple types of hematologic malignancies (HMs), with dramatic single agent responses for pembrolizumab and nivolumab in Hodgkin lymphoma (HL). In this review, we outline the current state of immune checkpoint blockade drug development in HMs, and discuss mechanisms of activity and resistance, and highlight potential targets in the immune tumor microenvironment (TME)...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28529904/mini-review-of-conventional-and-hypofractionated-radiation-therapy-combined-with-immunotherapy-for-non-small-cell-lung-cancer
#12
REVIEW
Allison M Campbell, Roy H Decker
A successful antitumoral response requires immunological activation as well as an antigenic pool capable of stimulating both the innate and the adaptive immune system. Recent advances in immunotherapy have been aimed at boosting the activation status of the innate and adaptive immune system, including cytokine administration, monoclonal antibodies engineered to target high yield elements in oncogenic signaling pathways, cancer vaccines, and checkpoint inhibitors. Herein, we examine the ways that radiation therapy induced cell death provides a pool of stimulus antigen, and draw parallels from the immunobiology of autoimmunity to explore how the immunogenicity of antigen derived from radiation-induced cell death might augment the antitumoral response...
April 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28529897/uncovering-the-immune-tumor-microenvironment-in-non-small-cell-lung-cancer-to-understand-response-rates-to-checkpoint-blockade-and-radiation
#13
REVIEW
Jonathan E Schoenhals, Steven N Seyedin, Clark Anderson, Eric D Brooks, Yun R Li, Ahmed I Younes, Sharareh Niknam, Ailin Li, Hampartsoum B Barsoumian, Maria Angelica Cortez, James W Welsh
The study of immunology has led to breakthroughs in treating non-small cell lung cancer (NSCLC). The recent approval of an anti-PD1 checkpoint drug for NSCLC has generated much interest in novel combination therapies that might provide further benefit for patients. However, a better understanding of which combinations may (or may not) work in NSCLC requires understanding the lung immune microenvironment under homeostatic conditions and the changes in that microenvironment in the setting of cancer progression and with radiotherapy...
April 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28529705/case-report-beh%C3%A3-et-s-disease-accompanied-with-vitiligo
#14
Ragıp Ertaş, Kemal Özyurt, Atıl Avcı, Sule Ketenci Ertas, Mustafa Atasoy
Recently, a few case reports and clinical studies have been published that explore the association of Behçet's Disease (BD) and vitiligo, with conflicting results. Genetic and immunological properties of BD and presence of autoantibodies support autoimmunity, but clinical features suggest autoinflammatory diseases. BD is thought to be a cornerstone between autoimmune and autoinflammatory diseases. On the other hand, vitiligo has been accepted as an autoimmune disease with associations of other autoimmune disorders and there is a possible role of autoimmunity in pathogenesis of the disease...
2017: F1000Research
https://www.readbyqxmd.com/read/28529699/evolution-immunity-and-the-emergence-of-brain-superautoantigens
#15
Serge Nataf
While some autoimmune disorders remain extremely rare, others largely predominate the epidemiology of human autoimmunity. Notably, these include psoriasis, diabetes, vitiligo, thyroiditis, rheumatoid arthritis and multiple sclerosis. Thus, despite the quasi-infinite number of "self" antigens that could theoretically trigger autoimmune responses, only a limited set of antigens, referred here as superautoantigens, induce pathogenic adaptive responses. Several lines of evidence reviewed in this paper indicate that, irrespective of the targeted organ (e...
2017: F1000Research
https://www.readbyqxmd.com/read/28529013/bipolar-fresh-total-osteochondral-allograft-in-the-ankle-is-it-a-successful-long-term-solution
#16
S Giannini, A Mazzotti, F Vannini
INTRODUCTION: Severe post-traumatic ankle arthritis poses a reconstructive challenge in young and active patients. Although technically demanding and despite unsolved immunological issues, bipolar fresh total osteochondral allograft (BFTOA) represent an intriguing option to arthrodesis and prosthetic replacement. The purpose of this paper is to evaluate the outcomes of a series of 48 ankle BFTOA at 10 years follow up and to investigate the rate of survival long term. METHODS: 58 patients underwent BFTOA, of these 48 were available for follow up...
May 11, 2017: Injury
https://www.readbyqxmd.com/read/28528339/molecular-diagnosis-of-tubercular-lymphadenopathy-from-fine-needle-aspirates-in-pediatric-patients
#17
Vivek Gupta, Arvind Bhake
OBJECTIVES: The diagnosis of peripheral tubercular lymphadenopathy (TBLN) in pediatric patients is often a challenge because features evident on fine-needle aspiration cytology (FNAC) or tissue biopsy can be deceptive for the reason that they result from an immunological response. This study aimed to evaluate polymerase chain reaction (PCR) for Mycobacterium tuberculosis complex (MTBC) in pediatric patients under clinical suspicion for TBLN and to assess its role in the evaluation of cases cytodiagnosed as reactive lymphoid hyperplasia...
May 20, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28528176/production-and-preclinical-assessment-of-camelid-immunoglobulins-against-echis-sochureki-venom-from-desert-of-rajasthan-india
#18
P D Tanwar, S K Ghorui, S K Kochar, Raghvendar Singh, N V Patil
Snakebite is a significant cause of death and disability in subsistent farming populations of rural India. Antivenom is the most effective treatment of envenoming and is manufactured from IgG of venom-immunised horses. Because of complex fiscal reasons, the production, testing and delivery of antivenoms designed to treat envenoming by the most medically-important snakes in the region has been questioned time to time. In this study, we report successful immunisation of dromedaries (Camelus dromedarius) against the venom of Indian saw-scaled Viper- Echis carinatus sochureki...
May 17, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28527859/tackling-influenza-with-broadly-neutralizing-antibodies
#19
REVIEW
Davide Corti, Elisabetta Cameroni, Barbara Guarino, Nicole L Kallewaard, Qing Zhu, Antonio Lanzavecchia
Monoclonal antibodies have revolutionized the treatment of several human diseases, including cancer, autoimmunity and inflammatory conditions and represent a new frontier for the treatment of infectious diseases. In the last decade, new methods have allowed the efficient interrogation of the human antibody repertoire from influenza immune individuals and the isolation of several monoclonal antibodies capable of dealing with the high variability of influenza viruses. Here, we will provide a comprehensive overview of the specificity, antiviral and immunological mechanisms of action and development into the clinic of broadly reactive monoclonal antibodies against influenza A and B viruses...
May 18, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28527652/uveitis-induced-by-programmed-cell-death-protein-1-inhibitor-therapy-with-nivolumab-in-metastatic-melanoma-patient
#20
Hiroaki Kanno, Kyoko Ishida, Wataru Yamada, Takashi Nishida, Nobumichi Takahashi, Kiyofumi Mochizuki, Yuki Mizuno, Kanako Matsuyama, Tomoko Takahashi, Mariko Seishima
Nivolumab, a new immune checkpoint inhibitor, binds to programmed cell death-protein 1 receptors on T cell, blockades binding of its ligands, and augments the immunologic reaction against tumor cells. Augmented immune response, however, may lead to immune-related adverse events. Herein we describe a rare case of bilateral anterior uveitis induced by nivolumab treatment for metastatic melanoma. A 54-year-old woman presented with mild conjunctival redness and blurred vision two months after initiating nivolumab treatment...
May 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
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