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https://www.readbyqxmd.com/read/29345346/galectin-3-type-c-self-association-on-neutrophil-surfaces-the-carbohydrate-recognition-domain-regulates-cell-function
#1
Martina Sundqvist, Amanda Welin, Jonas Elmwall, Veronica Osla, Ulf J Nilsson, Hakon Leffler, Johan Bylund, Anna Karlsson
Galectin-3 is an endogenous β-galactoside-binding lectin comprising a carbohydrate recognition domain (CRD) linked to a collagen-like N-domain. Both domains are required for galectin-3 to induce cellular effects; a C-terminal fragment of galectin-3, galectin-3C, containing the CRD but lacking the N-domain, binds cell surface glycoconjugates but does not induce cellular effects since cross-linking promoted by the N-domain is thought to be required. Instead, galectin-3C is proposed to antagonize the effects of galectin-3 by competing for binding sites...
January 10, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29343200/immunohistochemical-expression-of-cd31-pecam-1-in-nonendothelial-tumors-of-dogs
#2
José A Ramos-Vara, Margaret A Miller, Dee M Dusold
CD31 immunoreactivity has been reported in human nonendothelial tumors of both epithelial and mesenchymal origin. This study examined CD31 immunoreactivity of 347 formalin-fixed, paraffin-embedded normal, nonneoplastic, and neoplastic canine tissues. CD31 expression was considered positive if at least 10% of the cell population had membranous reactivity. Labeling with the CD31 antibody (clone JC/70A) was observed in 16 samples of normal organs (liver, kidney, lymph node), 6 of 6 specimens of hepatic nodular hyperplasia, 3 of 3 hepatic regenerative nodules, 1 of 4 anal sac carcinomas, 6 of 6 hemangiosarcomas, 18 of 20 hepatocellular carcinomas, 1 of 6 mammary carcinomas, 3 of 5 plasmacytomas, 18 of 53 renal cell carcinomas, and 1 of 5 cutaneous histiocytomas...
January 1, 2018: Veterinary Pathology
https://www.readbyqxmd.com/read/29336956/reverse-transcription-loop-mediated-isothermal-amplification-for-species-specific-detection-of-tomato-chlorotic-spot-orthotospovirus
#3
Xuelian Sui, Shouan Zhang, Zujian Wu, Kai-Shu Ling
Tomato chlorotic spot orthotospovirus (TCSV) is an emerging orthotospovirus that can cause severe disease on tomato plants. There are at least four orthotospoviruses infecting tomato, and mixed infection of two or more orthotospoviruses in a single tomato plant is quite common in the field. With similarity in the symptomatology and cross serological reactivity among tomato-infecting orthotospoviruses, especially between TCSV and groundnut ringspot orthotospovirus (GRSV), the current serological tests could not achieve definite and accurate species-specific determination in disease diagnosis...
January 11, 2018: Journal of Virological Methods
https://www.readbyqxmd.com/read/29323725/serum-igg-antibodies-from-healthy-subjects-up-to-100-years-old-react-to-jc-polyomavirus
#4
Ilaria Bononi, Elisa Mazzoni, Silvia Pietrobon, Marco Manfredini, Elena Trregiani, Marika Rossini, Francesca Lotito, Giovanni Guerra, Paola Rizzo, Fernanda Martini, Mauro Tognon
JC polyomavirus (JCPyV) was identified in 1971 in the brain tissue of a patient (J.C.) affected by the progressive multifocal leukoencephalopathy (PML). JCPyV encodes for the oncoproteins large T antigen (Tag) and small t-antigen (tag). These oncoproteins are responsible of the cell transformation and tumorigenesis in experimental animals. JCPyV is ubiquitous in human populations. After the primary infection, which is usually asymptomatic, JCPyV remains lifelong in the host in a latent phase. Its reactivation may occur in heathy subjects and immunocompromised patients...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29311365/simultaneous-recognition-of-allogeneic-mhc-and-cognate-autoantigen-by-autoreactive-t-cells-in-transplant-rejection
#5
Adam L Burrack, Laurie G Landry, Janet Siebert, Marilyne Coulombe, Ronald G Gill, Maki Nakayama
The autoimmune condition is a primary obstacle to inducing tolerance in type 1 diabetes patients receiving allogeneic pancreas transplants. It is unknown how autoreactive T cells that recognize self-MHC molecules contribute to MHC-disparate allograft rejection. In this report, we show the presence and accumulation of dual-reactive, that is autoreactive and alloreactive, T cells in C3H islet allografts that were transplanted into autoimmune diabetic NOD mice. Using high-throughput sequencing, we discovered that T cells prevalent in allografts share identical TCRs with autoreactive T cells present in pancreatic islets...
January 8, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29304778/inflammation-and-glucose-homeostasis-are-associated-with-specific-structural-features-among-adults-without-knee-osteoarthritis-a-cross-sectional-study-from-the-osteoarthritis-initiative
#6
Alina C Stout, Mary F Barbe, Charles B Eaton, Mamta Amin, Fatimah Al-Eid, Lori Lyn Price, Bing Lu, Grace H Lo, Ming Zhang, Jincheng Pang, Timothy E McAlindon, Jeffrey B Driban
BACKGROUND: Greater age and body mass index are strong risk factors for osteoarthritis (OA). Older and overweight individuals may be more susceptible to OA because these factors alter tissue turnover in menisci, articular cartilage, and bone via altered glucose homeostasis and inflammation. Understanding the role of inflammation and glucose homeostasis on structural features of early-stage OA may help identify therapeutic targets to delay or prevent the onset of OA among subsets of adults with these features...
January 5, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29286160/identification-and-characterization-of-epitopes-from-influenza-a-virus-hemagglutinin-that-induce-broadly-cross-reactive-antibodies
#7
Yuan Li, Hanyu Hu, Zongli Qi, Jingying Sun, Yan Li, Qing Feng, Chunyan Guo, Haifang Wang, Penghua Zhao, Yang Liu, Xiangrong Zhao, Guanghua Wang, Hai Zhang, Libin Liu, Jun Hu
Influenza is the most common infectious disease and is caused by influenza A virus (IAV) infection. Hemagglutinin (HA) is an important viral protein of influenza A and is a major component of current IAV vaccines. The side effects associated with IAV vaccination are well studied; however, the HA‑induced immunopathological changes have remained largely elusive. The primary objective of the present study was to determine the tissue cross‑reactive epitopes of HA proteins. Monoclonal antibodies (McAbs) were generated according to traditional methods using purified HA proteins from influenza vaccine lysates...
December 22, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29283125/factors-affecting-the-serological-testing-of-cadaveric-donor-cornea
#8
Anuradha Raj, Garima Mittal, Harsh Bahadur
PURPOSE: The purpose of this study was to evaluate the serological profile of the eye donors and to study the influence of various factors on serological test results. METHODS: A cross-sectional, observational study was conducted, and data of 509 donors were reviewed from the records of eye bank from December 2012 to June 2017. Various details of donors analyzed included the age, sex of the donor, cause of death, source of tissue, time since blood collection after death, macroscopic appearance of blood sample, and details of discarded tissues...
January 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29282079/expitope-2-0-a-tool-to-assess-immunotherapeutic-antigens-for-their-potential-cross-reactivity-against-naturally-expressed-proteins-in-human-tissues
#9
Victor Jaravine, Anja Mösch, Silke Raffegerst, Dolores J Schendel, Dmitrij Frishman
BACKGROUND: Adoptive immunotherapy offers great potential for treating many types of cancer but its clinical application is hampered by cross-reactive T cell responses in healthy human tissues, representing serious safety risks for patients. We previously developed a computational tool called Expitope for assessing cross-reactivity (CR) of antigens based on tissue-specific gene expression. However, transcript abundance only indirectly indicates protein expression. The recent availability of proteome-wide human protein abundance information now facilitates a more direct approach for CR prediction...
December 28, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29245086/liquid-chromatography-tandem-mass-spectrometric-assay-for-the-quantitation-of-the-novel-radiation-protective-agent-and-radiation-mitigator-jp4-039-in-murine-plasma
#10
Susan Christner, Jianxia Guo, Robert A Parise, Melanie Ringeval, Adam T Hoye, Peter Wipf, Michael W Epperly, Joel S Greenberger, Jan H Beumer, Julie L Eiseman
JP4-039 radio-protects prior to, and radio-mitigates after ionizing radiation by neutralizing reactive oxygen species. We developed and validated an LC-MS/MS assay for the quantitation of JP4-039 in murine plasma. Methanol protein precipitation of 50μL plasma was followed by isocratic reverse phase chromatography for a 6min run time, and electrospray positive mode ionization mass spectrometric detection. The plasma assay was linear from 1 to 1000ng/mL with appropriate accuracy (97.1-107.6%) and precision (3...
December 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29243477/electrochemical-selectivity-achieved-using-a-double-voltammetric-waveform-and-partial-least-squares-regression-differentiating-endogenous-hydrogen-peroxide-fluctuations-from-shifts-in-ph
#11
Carl J Meunier, Edwin C Mitchell, James G Roberts, Jonathan Vincent Toups, Gregory S McCarty, Leslie A Sombers
Hydrogen peroxide (H2O2) is a reactive oxygen species that serves as an important signaling molecule in normal brain function. At the same time, excessive H2O2 concentrations contribute to a myriad of pathological consequences resulting from oxidative stress. Studies to elucidate the diverse roles that H2O2 plays in complex biological environments have been hindered by the lack of robust methods for probing dynamic H2O2 fluctuations in living systems with molecular specificity. Background-subtracted fast-scan cyclic voltammetry (FSCV) at carbon-fiber microelectrodes provides a method of detecting rapid H2O2 fluctuations with high temporal and spatial resolution in brain tissue...
December 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29242160/the-impact-of-functional-groups-of-poly-ethylene-glycol-macromers-on-the-physical-properties-of-photo-polymerized-hydrogels-and-the-local-inflammatory-response-in-the-host
#12
James R Day, Anu David, Jiwon Kim, Evan A Farkash, Marilia Cascalho, Nikola Milašinović, Ariella Shikanov
Poly(ethylene glycol) (PEG) can be functionalized and modified with various moieties allowing for a multitude of cross-linking chemistries. Here, we investigate how vinyl sulfone, acrylate, and maleimide functional end groups affect hydrogel formation, physical properties, viability of encapsulated cells, post-polymerization modification, and inflammatory response of the host. We have shown that PEG-VS hydrogels, in the presence of a co-monomer, N-vinyl-2-pyrrolidone (NVP), form more efficiently than PEG-Ac and PEG-Mal hydrogels, resulting in superior physical properties after 6 minutes of ultraviolet light exposure...
December 11, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29237466/rapid-detection-of-infectious-bovine-rhinotracheitis-virus-using-recombinase-polymerase-amplification-assays
#13
Peili Hou, Hongmei Wang, Guimin Zhao, Chengqiang He, Hongbin He
BACKGROUND: Infectious bovine rhinotracheitis virus (IBRV) is a major pathogen in cattle and has led to significant economic losses to the dairy industry worldwide, and therefore a more optimal method for the rapid diagnosis of IBRV infection is highly needed. In this study, we described the development of a lateral flow dipstrip (LFD) of isothermal recombinase polymerase amplification (RPA) method for rapid detection of IBRV. METHODS: Distinct regions were selected as a candidate target for designing the LFD-RPA primers and probes...
December 13, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29236994/group-g-streptococcus-induces-an-autoimmune-il-17a-ifn-%C3%AE-mediated-carditis-in-the-lewis-rat-model-of-rheumatic-heart-disease
#14
Suchandan Sikder, Natasha L Williams, Alanna E Sorenson, Md A Alim, Miranda E Vidgen, Nicole J Moreland, Catherine M Rush, Robert S Simpson, Brenda L Govan, Robert E Norton, Madeleine W Cunningham, David J McMillan, Kadaba S Sriprakash, Natkunam Ketheesan
Acute rheumatic fever and rheumatic heart disease (ARF/RHD) have long been described as autoimmune sequelae of Streptococcus pyogenes or group A streptococcal (GAS) infection. Both antibody and T-cell responses against immunodominant GAS virulence factors including M-protein, cross-react with host tissue proteins triggering an inflammatory response leading to permanent heart damage. However, in some ARF/RHD endemic regions, throat carriage of GAS is low. As Streptococcus dysgalactiae subspecies equisimilis (SDSE), also known as β-hemolytic groups C and G streptococci (GCS/GGS) also express M-protein, we postulated that streptococci other than GAS may have the potential to initiate or exacerbate ARF/RHD...
December 9, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29222810/monocytes-enhance-neutrophil-induced-blister-formation-in-an-ex-vivo-model-of-bullous-pemphigoid
#15
E de Graauw, C Sitaru, M P Horn, L Borradori, S Yousefi, D Simon, H-U Simon
BACKGROUND: Lesions of bullous pemphigoid (BP), an autoimmune subepidermal blistering disease characterized by the presence of tissue-bound and circulating autoantibodies to hemidesmosomal antigens, harbour a mixed inflammatory cellular infiltrate. In various models, neutrophils, eosinophils, mast cells, monocytes as well as B and T cells have been shown to be involved in the pathogenesis of BP. However, their interactions with and effective role in blister formation remains uncertain...
December 8, 2017: Allergy
https://www.readbyqxmd.com/read/29219671/idiopathic-retroperitoneal-fibrosis-a-cross-sectional-study-of-142-chinese-patients
#16
S Liao, Y Wang, K Li, J Zhu, J Zhang, F Huang
OBJECTIVE: To investigate the epidemiological, clinicolaboratory, imaging, and therapeutic characteristics of idiopathic retroperitoneal fibrosis (iRPF) in China. METHOD: All patients presenting to the Chinese People's Liberation Army General Hospital from October 1996 to July 2016 diagnosed with iRPF were included. Data were collected from medical records and the smoking index was calculated. Scheel radiological classification was used to assess the extent of soft-tissue density...
December 8, 2017: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/29196042/multilayer-polyion-complex-nanoformulations-of-superoxide-dismutase-1-for-acute-spinal-cord-injury
#17
N V Nukolova, A D Aleksashkin, T O Abakumova, A Y Morozova, I L Gubskiy, Е А Kirzhanova, M A Abakumov, V P Chekhonin, N L Klyachko, A V Kabanov
As one of the most devastating forms of trauma, spinal cord injury (SCI) remains a challenging clinical problem. The secondary processes associated with the primary injury, such as overproduction of reactive oxygen species (ROS) and inflammation, lead to concomitant compression of the injured spinal cord and neuronal death. Delivery of copper-zinc superoxide dismutase (SOD1), an efficient ROS scavenger, to the site of injury can mitigate SCI-induced oxidative stress and tissue damage. Towards this goal catalytically active nanoformulations of SOD1 ("nanozymes") are developed as a modality for treatment of SCI...
November 28, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29191454/fullerene-c60-particle-size-implications-in-neurotoxicity-following-infusion-into-the-hippocampi-of-wistar-rats
#18
Ândrea Barbosa Kraemer, Gustavo Morrone Parfitt, Daiane da Silva Acosta, Gisele Eva Bruch, Marcos Freitas Cordeiro, Luis Fernando Marins, Juliane Ventura-Lima, José María Monserrat, Daniela Martí Barros
The buckminsterfullerene (C60) is considered as a relevant candidate for drug and gene delivery to the brain, once it has the ability to cross the blood-brain barrier. However, the biological implications of this nanomaterial are not fully understood, and its safety for intracerebral delivery is still debatable. In this study, we investigated if C60 particle size could alter its biological effects. For this, two aqueous C60 suspensions were used with maximum particle size up to 200nm and 450nm. The suspensions were injected in the hippocampus, the main brain structure involved in memory processing and spatial localization...
November 27, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29172286/epitope-mapping-of-human-her2-specific-mouse-monoclonal-antibodies-using-recombinant-extracellular-subdomains
#19
Reza Hosseini Ghatar, Tahereh Soltantoyeh, Tannaz Bahadori, Maryam Golara, Hadi Hassannia, Roya Khosravi Eghbal, Jalal Khoshnoodi, Mohammad Ali Judaki, Forough Golsaz-Shirazi, Mahmood Jeddi-Tehrani, Mohammad Mehdi Amiri, Fazel Shokri
Background: Human epidermal growth factor receptor 2 (HER2) is overexpressed in several human malignancies and numerous studies have indicated that it plays important roles in the development and maintenance of the malignant phenotype. Targeting of HER2 molecules with monoclonal antibodies (mAbs) is a promising therapeutic approach. However, anti-HER2 mAbs affect cancer cells differently, depending on the distinct epitopes which are the targets. Methods: Reactivity of a panel of 8 mouse anti-HER2 mAbs was investigated by ELISA and Western blotting using different subdomains of the extracellular domain (ECD) of HER2...
November 26, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/29159396/association-of-nonalcoholic-fatty-liver-disease-with-lower-brain-volume-in-healthy-middle-aged-adults-in-the-framingham-study
#20
Galit Weinstein, Shira Zelber-Sagi, Sarah R Preis, Alexa S Beiser, Charles DeCarli, Elizabeth K Speliotes, Claudia L Satizabal, Ramachandran S Vasan, Sudha Seshadri
Importance: Nonalcoholic fatty liver disease (NAFLD) is a common condition that is most often asymptomatic. It is associated with metabolic syndrome, incident diabetes, carotid atherosclerosis, and endothelial dysfunction, conditions that in turn are strongly linked with brain damage and cognitive impairment. However, it is not known whether NAFLD is associated with structural brain measures in humans. Objective: To assess the association between prevalent NAFLD and brain magnetic resonance imaging (MRI) measures...
November 20, 2017: JAMA Neurology
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