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https://www.readbyqxmd.com/read/28716826/il-10-producing-infliximab-specific-t-cells-regulate-the-antidrug-t-cell-response-in-exposed-patients
#1
Alessandra Vultaggio, Francesca Nencini, Sara Pratesi, Daniele Cammelli, Maria Totaro, Sergio Romagnani, Enrico Maggi, Andrea Matucci
Infliximab (IFX) is a chimeric mAb that can lead to the appearance of anti-drug Abs. Recent research has identified the presence of circulating IFX-specific T cells in treated patients. The aim of the study was to analyze the functional characteristics of IFX-specific T cells, in particular their capability to produce biologically active regulatory cytokines. Drug-stimulated PBMCs or coculture systems were used to detect memory T cells in treated patients. The cytokines produced by IFX-specific T cells, T cell lines, and T cell clones were evaluated at the mRNA and protein levels...
July 17, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28714923/heterologous-humoral-response-against-h5n1-h7n3-and-h9n2-avian-influenza-viruses-after-seasonal-vaccination-in-a-european-elderly-population
#2
Ivan Sanz, Silvia Rojo, Sonia Tamames, José María Eiros, Raúl Ortiz de Lejarazu
Avian influenza viruses are currently one of the main threats to human health in the world. Although there are some screening reports of antibodies against these viruses in humans from Western countries, most of these types of studies are conducted in poultry and market workers of Asian populations. The presence of antibodies against avian influenza viruses was evaluated in an elderly European population. An experimental study was conducted, including pre- and post-vaccine serum samples obtained from 174 elderly people vaccinated with seasonal influenza vaccines of 2006-2007, 2008-2009, 2009-2010, and 2010-2011 Northern Hemisphere vaccine campaigns...
July 17, 2017: Vaccines
https://www.readbyqxmd.com/read/28714565/mri-compatible-breast-rib-phantom-for-evaluating-ultrasonic-thermal-exposures
#3
Georgios Menikou, Marinos Yiannakou, Christos Yiallouras, Cleanthis Ioannides, Christakis Damianou
INTRODUCTION: The target of this study was the development of a magnetic resonance imaging (MRI) compatible breast phantom for focused ultrasound which includes plastic (ABS) ribs. The objective of the current study was the evaluation of a focused ultrasound procedure using the proposed phantom that eliminates rib heating. MATERIAL AND METHODS: The proposed phantom was evaluated using two different focused ultrasound exposures. The surrounding breast tissue was mimicked using an agar-silica-evaporation milk gel (2% w/v - 2% w/v - 40% v/v)...
July 17, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28712768/neutralizing-antibodies-against-a-specific-human-immunodeficiency-virus-gp41-epitope-are-associated-with-long-term-non-progressor-status
#4
Olivier Lucar, Bin Su, Valérie Potard, Assia Samri, Brigitte Autran, Christiane Moog, Patrice Debré, Vincent Vieillard
Antibodies (Abs) play a central role in human immunodeficiency virus (HIV) protection due to their multiple functional inhibitory activities. W614A-3S Abs recognize a specific form of a highly conserved motif of the gp41 envelope protein and can elicit viral neutralization to protect CD4(+) T cells. Here, we describe in detail the neutralizing profile of W614A-3S Abs in untreated long-term non-progressor (LTNP) HIV-infected patients. W614A-3S Abs were detected in 23.5% (16/68) of untreated LTNP patients compared with <5% (5/104) of HIV-1 progressor patients...
July 11, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28712667/antibiotic-stewardship-in-low-and-middle-income-countries-same-but-different
#5
REVIEW
Janneke A Cox, Erika Vlieghe, Marc Mendelson, Heiman Wertheim, Linus Ndegwa, Maria Virginia Villegas, Ian Gould, Gabriel Levy Hara
BACKGROUND: Antibiotic resistance (ABR) is a quickly worsening problem worldwide, also in low-and middle-income countries (LMICs). Appropriate antibiotic use in humans and animals, i.e. antibiotic stewardship (ABS), is one of the corner stones of the World Health Organization's global action plan for ABR. Many LMICs are in the process of developing stewardship policies and programs. AIMS: We highlight the challenges for ABS initiatives in LMICs, give an outline of the (inter)national recommendations and demonstrate examples of effective, contextualised stewardship interventions...
July 13, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28711185/dosimetric-characterization-of-3d-printed-bolus-at-different-infill-percentage-for-external-photon-beam-radiotherapy
#6
Rosalinda Ricotti, Delia Ciardo, Floriana Pansini, Alessia Bazani, Stefania Comi, Ruggero Spoto, Samuele Noris, Federica Cattani, Guido Baroni, Roberto Orecchia, Andrea Vavassori, Barbara Alicja Jereczek-Fossa
BACKGROUND AND PURPOSE: 3D printing is rapidly evolving and further assessment of materials and technique is required for clinical applications. We evaluated 3D printed boluses with acrylonitrile butadiene styrene (ABS) and polylactide (PLA) at different infill percentage. MATERIAL AND METHODS: A low-cost 3D printer was used. The influence of the air inclusion within the 3D printed boluses was assessed thoroughly both with treatment planning system (TPS) and with physical measurements...
July 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28710251/role-for-zap-70-signaling-in-the-differential-effector-functions-of-rituximab-and-obinutuzumab-ga101-in-chronic-lymphocytic-leukemia-b-cells
#7
Sladjana Skopelja-Gardner, Jonathan D Jones, B JoNell Hamilton, Alexey V Danilov, William F C Rigby
Rituximab (RTX) has been the hallmark anti-CD20 mAb for the treatment of B cell neoplasms, including B cell chronic lymphocytic leukemia (B-CLL). Recently, a novel humanized anti-CD20 mAb obinutuzumab (GA101) has been implemented as first-line CLL therapy. Treatment of CLL patients with RTX is associated with CD20 loss via an FcγR-mediated process, trogocytosis. RTX-induced trogocytosis has been characterized as both the means of resistance to therapy, via loss of cell surface target proteins (antigenic modulation), as well as a process that alters B cell phenotype and function...
July 14, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28705430/effect-of-long-term-exposure-to-air-pollution-on-anxiety-and-depression-in-adults-a-cross-sectional-study
#8
Cristina Vert, Gonzalo Sánchez-Benavides, David Martínez, Xavier Gotsens, Nina Gramunt, Marta Cirach, José Luis Molinuevo, Jordi Sunyer, Mark J Nieuwenhuijsen, Marta Crous-Bou, Mireia Gascon
BACKGROUND: The association between exposure to air pollutants and mental disorders among adults has been suggested, although results are not consistent. OBJECTIVE: To analyze the association between long-term exposure to air pollution and history of anxiety and depression disorders and of medication use (benzodiazepines and antidepressants) in adults living in Barcelona. METHODS: A total of 958 adults (45-74 years old) residents in Barcelona, most of them having at least one of their parents diagnosed with dementia (86%), and participating in the ALFA (Alzheimer and Families) study, were included...
July 3, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28701508/prdm1-regulates-thymic-epithelial-function-to-prevent-autoimmunity
#9
Natalie A Roberts, Brian D Adams, Nicholas I McCarthy, Reuben M Tooze, Sonia M Parnell, Graham Anderson, Susan M Kaech, Valerie Horsley
Autoimmunity is largely prevented by medullary thymic epithelial cells (TECs) through their expression and presentation of tissue-specific Ags to developing thymocytes, resulting in deletion of self-reactive T cells and supporting regulatory T cell development. The transcription factor Prdm1 has been implicated in autoimmune diseases in humans through genome-wide association studies and in mice using cell type-specific deletion of Prdm1 in T and dendritic cells. In this article, we demonstrate that Prdm1 functions in TECs to prevent autoimmunity in mice...
July 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28701507/the-innate-cytokines-il-25-il-33-and-tslp-cooperate-in-the-induction-of-type-2-innate-lymphoid-cell-expansion-and-mucous-metaplasia-in-rhinovirus-infected-immature-mice
#10
Mingyuan Han, Charu Rajput, Jun Y Hong, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life respiratory viral infection is a risk factor for asthma development. Rhinovirus (RV) infection of 6-d-old mice, but not mature mice, causes mucous metaplasia and airway hyperresponsiveness that are associated with the expansion of lung type 2 innate lymphoid cells (ILC2s) and are dependent on IL-13 and the innate cytokine IL-25. However, contributions of the other innate cytokines, IL-33 and thymic stromal lymphopoietin (TSLP), to the observed asthma-like phenotype have not been examined. We reasoned that IL-33 and TSLP expression are also induced by RV infection in immature mice and are required for maximum ILC2 expansion and mucous metaplasia...
July 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28698900/simulation-based-mastery-learning-for-endoscopy-using-the-endoscopy-training-system-a-strategy-to-improve-endoscopic-skills-and-prepare-for-the-fundamentals-of-endoscopic-surgery-fes-manual-skills-exam
#11
E Matthew Ritter, Zachary A Taylor, Kathryn R Wolf, Brenton R Franklin, Sarah B Placek, James R Korndorffer, Aimee K Gardner
INTRODUCTION: The fundamentals of endoscopic surgery (FES) program has considerable validity evidence for its use in measuring the knowledge, skills, and abilities required for competency in endoscopy. Beginning in 2018, the American Board of Surgery will require all candidates to have taken and passed the written and performance exams in the FES program. Recent work has shown that the current ACGME/ABS required case volume may not be enough to ensure trainees pass the FES skills exam...
July 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28698055/small-molecule-metalloprotease-inhibitor-with-in-vitro-ex-vivo-and-in-vivo-efficacy-against-botulinum-neurotoxin-serotype-a
#12
Alan R Jacobson, Michael Adler, Nicholas R Silvaggi, Karen N Allen, Genessa M Smith, Ross A Fredenburg, Ross L Stein, Jong-Beak Park, Xiaochuan Feng, Charles B Shoemaker, Sharad S Deshpande, Michael C Goodnough, Carl J Malizio, Eric A Johnson, Sabine Pellett, William H Tepp, Saul Tzipori
Botulinum neurotoxins (BoNTs) are the most toxic substances known to mankind and are the causative agents of the neuroparalytic disease botulism. Their ease of production and extreme toxicity have caused these neurotoxins to be classified as Tier 1 bioterrorist threat agents and have led to a sustained effort to develop countermeasures to treat intoxication in case of a bioterrorist attack. While timely administration of an approved antitoxin is effective in reducing the severity of botulism, reversing intoxication requires different strategies...
July 8, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28697567/antibodies-to-signaling-molecules-and%C3%A2-receptors-in-alzheimer-s-disease-are%C3%A2-associated-with-psychomotor-slowing-depression-and-poor-visuospatial-function
#13
Lasse M Giil, Christian A Vedeler, Einar K Kristoffersen, Jan Erik Nordrehaug, Harald Heidecke, Ralf Dechend, Kai Schulze-Forster, Dominik N Muller, Victoria S von Goetze, Otavio Cabral-Marques, Gabriela Riemekasten, Petra Vogelsang, Staale Nygaard, Anders Lund, Dag Aarsland
BACKGROUND: Alzheimer's disease (AD) is associated with several antibodies as well as signaling molecules and receptors. These may be detrimental in the presence of a disrupted blood-brain barrier (BBB). OBJECTIVE: To investigate whether the levels of antibodies toward 33 signaling molecules involved in neurotransmitter, vascular, and immune functions were associated with AD and, within the AD group; cognitive function and mood. METHODS: Antibodies in sera from patients with mild AD [(n = 91) defined as a Mini-Mental State Examination ≥ 20 or a Clinical Dementia Rating Scale≤1] and healthy controls (n = 102) were measured with enzyme-linked immunosorbent assays...
July 1, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28697172/immunogenic-chemotherapy-sensitizes-renal-cancer-to-immune-checkpoint-blockade-therapy-in-preclinical-models
#14
Shujin Cui
BACKGROUND Renal cell carcinoma (RCC) is among the most common malignant cancers of males worldwide. For advanced RCC patients, there still is no effective therapy. Immune checkpoint blockade therapies have shown benefits for many cancers, but previous clinical trials of immune checkpoint blockade therapies in RCC patients achieved only modest results. MATERIAL AND METHODS We explored the effects of combining chemotherapy with immune checkpoint blockade therapy in RCC xenograft mouse models. We also studied the potential mechanisms by which chemotherapy might enhance the efficacy of immune checkpoint blockade therapy, both in vitro and in vivo...
July 11, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28696256/a-novel-subset-of-anti-inflammatory-cd138-macrophages-is-deficient-in-mice-with-experimental-lupus
#15
Shuhong Han, Haoyang Zhuang, Stepan Shumyak, Jingfan Wu, Hui Li, Li-Jun Yang, Westley H Reeves
Dead cells accumulating in the tissues may contribute to chronic inflammation. We examined the cause of impaired apoptotic cell clearance in human and murine lupus. Dead cells accumulated in bone marrow from lupus patients but not from nonautoimmune patients undergoing myeloablation, where they were efficiently removed by macrophages (MΦ). Impaired apoptotic cell uptake by MΦ also was seen in mice treated i.p. with pristane (develop lupus) but not mineral oil (MO) (do not develop lupus). The inflammatory response to both pristane and MO rapidly depleted resident (Tim4(+)) large peritoneal MΦ...
July 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28694201/use-of-quantiferon-tb-gold-in-tube-assay-in-screening-for-neutralizing-anti-interferon-gamma-autoantibodies-in-patients-with-disseminated-nontuberculous-mycobacterial-infection
#16
Un-In Wu, Yu-Chung Chuang, Wang-Huei Sheng, Hsin-Yun Sun, Yi-Ting Jhong, Jann-Yuan Wang, Shan-Chwen Chang, Jann-Tay Wang, Yee-Chun Chen
OBJECTIVE: Anti-interferon-gamma (IFN-γ) autoantibodies (anti-IFN-γ Abs) have been increasingly recognized as an important cause of disseminated nontuberculous mycobacterial (DNTM) infection, and identification of this immunodeficiency impacts clinical management. However, the protean disease manifestations and inaccessibility to diagnostic tests in clinical settings hamper its early diagnosis. Here, we sought to determine whether QuantiFERON-TB Gold In-tube (QFT-GIT), a commercialized IFN-γ release assay, could be used to screen for neutralizing anti-IFN-γ Abs among previously healthy adults with DNTM infection...
July 7, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28694134/hashimoto-s-encephalopathy-and-anti-mog-antibody-encephalitis-50-years-after-lord-brain-s-description
#17
Kerrie-Anne Chen, Fabienne Brilot, Russell C Dale, Antony R Lafferty, Peter Ian Andrews
PURPOSE: To consider the role of anti-MOG Abs associated encephalitis in Hashimoto's Encephalitis (HE). RESULTS: A 10 year old girl with pre-existing Hashimoto's thyroiditis presented with dysarthria, ataxia and lethargy whilst euthyroid. Brain MRI showed multifocal T2 and FLAIR hyperintense lesions. She responded promptly to treatment with corticosteroids. Her clinical scenario was comparable to a sizeable minority of patients diagnosed with HE in the literature, who have similar brain MRIs...
June 10, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28687661/a-systems-vaccinology-approach-reveals-temporal-transcriptomic-changes-of-immune-responses-to-the-yellow-fever-17d-vaccine
#18
Jue Hou, Shuhui Wang, Manxue Jia, Dan Li, Ying Liu, Zhengpeng Li, Hong Zhu, Huifang Xu, Meiping Sun, Li Lu, Zhinan Zhou, Hong Peng, Qichen Zhang, Shihong Fu, Guodong Liang, Lena Yao, Xuesong Yu, Lindsay N Carpp, Yunda Huang, Julie McElrath, Steve Self, Yiming Shao
In this study, we used a systems vaccinology approach to identify temporal changes in immune response signatures to the yellow fever (YF)-17D vaccine, with the aim of comprehensively characterizing immune responses associated with protective immunity. We conducted a cohort study in which 21 healthy subjects in China were administered one dose of the YF-17D vaccine; PBMCs were collected at 0 h and then at 4 h and days 1, 2, 3, 5, 7, 14, 28, 84, and 168 postvaccination, and analyzed by transcriptional profiling and immunological assays...
July 7, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28687659/neutrophils-induce-astroglial-differentiation-and-migration-of-human-neural-stem-cells-via-c1q-and-c3a-synthesis
#19
Mitra J Hooshmand, Hal X Nguyen, Katja M Piltti, Francisca Benavente, Samuel Hong, Lisa Flanagan, Nobuko Uchida, Brian J Cummings, Aileen J Anderson
Inflammatory processes play a key role in pathophysiology of many neurologic diseases/trauma, but the effect of immune cells and factors on neurotransplantation strategies remains unclear. We hypothesized that cellular and humoral components of innate immunity alter fate and migration of human neural stem cells (hNSC). In these experiments, conditioned media collected from polymorphonuclear leukocytes (PMN) selectively increased hNSC astrogliogenesis and promoted cell migration in vitro. PMN were shown to generate C1q and C3a; exposure of hNSC to PMN-synthesized concentrations of these complement proteins promoted astrogliogenesis and cell migration...
July 7, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28686316/is-pre-transplant-sensitization-against-angiotensin-ii-type1-receptor-still-a-risk-factor-of-graft-and-patient-outcome-in-kidney-transplantation-in-the-anti-hla-luminex-era
#20
C Deltombe, F Gillaizeau, D Anglicheau, E Morelon, K Trébern-Launay, F Le Borgne, M Rimbert, P Guérif, S Malard-Castagnet, Y Foucher, M Giral
AIMS: We aimed to assess the correlation of anti-angiotensin II type 1 receptor antibodies (anti-AT1R-Abs) before transplantation on a multicentric cohort of kidney transplant recipients (2008-2012), under Tacrolimus and Mycofenolate mofetil (MMF), screened by Luminex technology for anti -HLA immunization. METHODS: Anti-AT1R-antibody levels were measured by ELISA in pre-transplantation sera of 940 kidney recipients from 3 French centers of the DIVAT cohort. Multivariable Cox models estimated the association between pre-transplant anti-angiotensin II type 1 receptor antibodies and time to acute rejection episodes (ARE) or time to graft failure...
July 7, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
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