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tissue cross reactivity

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https://www.readbyqxmd.com/read/28092067/interrelations-among-the-adipocytokines-leptin-and-adiponectin-oxidative-stress-and-aseptic-inflammation-markers-in-pre-and-early-pubertal-normal-weight-and-obese-boys
#1
George Paltoglou, Maria Schoina, George Valsamakis, Nicolaos Salakos, Alexandra Avloniti, Athanasios Chatzinikolaou, Alexandra Margeli, Chrysanthi Skevaki, Maria Papagianni, Christina Kanaka-Gantenbein, Ioannis Papassotiriou, George P Chrousos, Ioannis G Fatouros, George Mastorakos
PURPOSE: Presumed interrelationships among deleterious aspects of adipose tissue metabolism, inflammation, and cellular oxidative stress could be influenced by pubertal hormonal changes. They were investigated in pre- and early pubertal normal-weight and obese boys before and after an exercise bout employed as an energy demanding stimulator. METHODS: Cross-sectional study. Seventy-six healthy pre- (mean ± SD, 10.6 ± 0.2 years old, 28 normal-weight, and 11 obese) and early-(11...
January 16, 2017: Endocrine
https://www.readbyqxmd.com/read/28077404/high-throughput-sequencing-of-the-t-cell-receptor-repertoire-pitfalls-and-opportunities
#2
James M Heather, Mazlina Ismail, Theres Oakes, Benny Chain
T-cell specificity is determined by the T-cell receptor, a heterodimeric protein coded for by an extremely diverse set of genes produced by imprecise somatic gene recombination. Massively parallel high-throughput sequencing allows millions of different T-cell receptor genes to be characterized from a single sample of blood or tissue. However, the extraordinary heterogeneity of the immune repertoire poses significant challenges for subsequent analysis of the data. We outline the major steps in processing of repertoire data, considering low-level processing of raw sequence files and high-level algorithms, which seek to extract biological or pathological information...
January 10, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28069495/surface-modification-of-copolymerized-films-from-three-armed-biodegradable-macromers-an-analytical-platform-for-modified-tissue-engineering-scaffolds
#3
Benno M Müller, Rudi Loth, Peter-Georg Hoffmeister, Friederike Zühl, Liv Kalbitzer, Michael C Hacker, Michaela Schulz-Siegmund
: The concept of macromers allows for a broad adjustment of biomaterial properties by macromer chemistry or copolymerization. Copolymerization strategies can also be used to introduce reactive sites for subsequent surface modification. Control over surface features enables adjustment of cellular reactions with regard to site and object of implantation. We designed macromer-derived polymer films which function as non-implantable analytical substrates for the investigation of surface properties of equally composed scaffolds for bone tissue engineering...
January 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28066011/role-of-membrane-cholesterol-and-lipid-peroxidation-in-regulating-the-na-k-atpase-activity-in-schizophrenia
#4
Suparna Roy, Anindya Dasgupta, Ushasi Banerjee, Piali Chowdhury, Ashis Mukhopadhyay, Gautam Saha, Omprakash Singh
BACKGROUND: Na(+)/K(+)-ATPase (NKA) activity is compromised in several neuropsychiatric disorders. Oxidative stress and membrane lipid composition play important roles in regulating NKA activity. AIMS: The present study was undertaken to evaluate the effects of oxidative stress-induced membrane lipid damage and membrane cholesterol composition on NKA pump activity in schizophrenia. SETTINGS AND DESIGN: It was a hospital-based, cross-sectional, observational study in 49 cases and 51 controls for 1 year...
July 2016: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28064210/characteristics-of-autoantibodies-targeting-14-3-3-proteins-and-their-association-with-clinical-features-in-newly-diagnosed-giant-cell-arteritis
#5
Anne Kistner, Marc B Bigler, Kathrin Glatz, Simon B Egli, Fabian S Baldin, Florian A Marquardsen, Matthias Mehling, Katharina M Rentsch, Daniel Staub, Markus Aschwanden, Mike Recher, Thomas Daikeler, Christoph T Berger
OBJECTIVES: Autoantibodies are useful biomarkers for diagnosing and monitoring treatment in some autoimmune diseases. Antibodies against isoforms of 14-3-3 protein have been proposed as biomarkers for the presence of aortic aneurysm in large-vessel vasculitis (LVV). Here, we aimed to evaluate the diagnostic role and potential immunopathological involvement of anti-14-3-3 antibodies in newly diagnosed LVV patients. METHODS: Antibodies against three isoforms of 14-3-3 (γ, ε and ζ) were measured in 90 subjects: 48 GCA and 3 Takayasu's arteritis (TA) patients, and 39 controls (non-inflammatory and inflammatory diseases), using a multiplexed bead-based immunoassay and immunoprecipitation studies...
January 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/28063989/upconversion-nanoparticles-mediated-deep-penetrating-photodynamic-therapy-of-killerred
#6
Liuen Liang, Yiqing Lu, Run Zhang, Andrew Care, Tiago A Ortega, Sergey M Deyev, Yi Qian, Andrei V Zvyagin
: The fluorescent protein KillerRed, a new type of biological photosensitizer, is considered as a promising substitute for current synthetic photosensitizes used in photodynamic therapy (PDT). However, broad applications of this photosensitiser in treating deep-seated lesions is challenging due to the limited tissue penetration of the excitation light with the wavelength falling in the visible spectral range. To overcome this challenge, we employ upconversion nanoparticles (UCNPs) that are able to convert deep-penetrating near infrared (NIR) light to green light to excite KillerRed locally, followed by the generation of reactive oxygen species (ROS) to kill tumour cells under centimetre-thick tissue...
January 4, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28058223/acute-antibody-mediated-rejection-after-intestinal-transplantation
#7
Guo-Sheng Wu, Ruy J Cruz, Jun-Chao Cai
AIM: To investigate the incidence, risk factors and clinical outcomes of acute antibody-mediated rejection (ABMR) after intestinal transplantation (ITx). METHODS: A retrospective single-center analysis was performed to identify cases of acute ABMR after ITx, based on the presence of donor-specific antibody (DSA), acute tissue damage, C4d deposition, and allograft dysfunction. RESULTS: Acute ABMR was identified in 18 (10.3%) out of 175 intestinal allografts with an average occurrence of 10 d (range, 4-162) after ITx...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28046005/field-usable-lateral-flow-immunoassay-for-the-rapid-detection-of-white-spot-syndrome-virus-wssv
#8
Prabir Kumar Kulabhusan, Jyutika M Rajwade, Vimal Sugumar, Gani Taju, A S Sahul Hameed, Kishore M Paknikar
BACKGROUND: White spot disease (WSD), a major threat to sustainable aquaculture worldwide, is caused by White spot syndrome virus (WSSV). The diagnosis of WSD relies heavily on molecular detection of the virus by one-step PCR. These procedures are neither field-usable nor rapid enough considering the speed at which the virus spreads. Thus, development of a rapid, reliable and field-usable diagnostic method for the detection of WSSV infection is imperative to prevent huge economic losses...
2017: PloS One
https://www.readbyqxmd.com/read/28042944/comparison-of-serum-raav-serotype-specific-antibodies-in-patients-with-duchenne-muscular-dystrophy-becker-muscular-dystrophy-inclusion-body-myositis-or-gne-myopathy
#9
Deborah Zygmunt, Kelly E Crowe, Kevin Flanigan, Paul T Martin
Recombinant Adeno-associated virus (rAAV) is a commonly used gene therapy vector for the delivery of therapeutic transgenes in a variety of human diseases, but pre-existing serum antibodies to viral capsid proteins can greatly inhibit rAAV transduction of tissues. We have assayed serum from patients with Duchenne Muscular Dystrophy (DMD), Becker Muscular Dystrophy (DMD), Inclusion Body Myositis (IBM), and GNE myopathy (GNE). These were compared to serum from otherwise normal human subjects to determine the extent of pre-existing serum antibodies to rAAVrh74, rAAV1, rAAV2, rAAV6, rAAV8 and rAAV9...
January 2, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28032943/mass-spectrometry-based-tools-to-characterize-dna-protein-cross-linking-by-bis-electrophiles
#10
Arnold Groehler, Amanda Degner, Natalia Y Tretyakova
DNA-protein cross-links (DPCs) are unusually bulky DNA adducts that form in cells as a result of exposure to endogenous and exogenous agents including reactive oxygen species, ultraviolet light, ionizing radiation, environmental agents (e.g. transition metals, formaldehyde, 1,2-dibromoethane, 1,3-butadiene) and common chemotherapeutic agents. Covalent DPCs are cytotoxic and mutagenic due to their ability to interfere with faithful DNA replication and prevent accurate gene expression. Key to our understanding of the biological significance of DPC formation is identifying the proteins most susceptible to forming these unusually bulky and complex lesions and quantifying the extent of DNA-protein cross-linking in cells and tissues...
December 29, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28029188/a-novel-isolation-protocol-and-probe-based-rt-pcr-for-diagnosis-of-gastric-infections-with-the-zoonotic-pathogen-helicobacter-suis
#11
Caroline Blaecher, Eva Bauwens, Alfred Tay, Fanny Peters, Sylvia Dobbs, John Dobbs, André Charlett, Richard Ducatelle, Freddy Haesebrouck, Annemieke Smet
BACKGROUND: Helicobacter suis is a very fastidious microorganism associated with gastritis, gastric ulcers, and mucosa-associated lymphoid tissue lymphoma in humans. In vitro isolation of this agent from human patients has so far been unsuccessful. MATERIALS AND METHODS: A probe-based real-time PCR (RT-PCR) for the rapid detection of H. suis in gastric biopsies was developed. Secondly, a mouse-passage-based protocol was optimized for isolation of low numbers of viable H...
December 28, 2016: Helicobacter
https://www.readbyqxmd.com/read/28017753/amplitude-of-tissue-oxygenation-index-change-predicts-cerebral-hyperperfusion-syndrome-during-carotid-artery-stenting
#12
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Yasushi Motoyama, Young Su Park, Takeshi Wada, Kimihiko Kichikawa, Hiroyuki Nakase
OBJECTIVE: Hyperperfusion syndrome (HPS) following carotid artery stenting (CAS) is a rare but serious complication. HPS is associated with preoperative hemodynamic impairment due to poor collateral flow and intraoperative cerebral ischemia. Filter-type embolic protection devices (EPDs) maintain anterograde carotid flow during CAS and somewhat prevent HPS. Early treatment of patients undergoing CAS and at risk for HPS is essential. Near-infrared spectroscopy (NIRS) allows non-invasive, real-time measurement of frontal lobe regional cerebral O2 saturation (TOI; tissue oxygenation index)...
December 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28006878/development-of-a-novel-multiplex-type-specific-quantitative-real-time-pcr-for-detection-and-differentiation-of-infections-with-human-papillomavirus-types-hpv2-hpv27-and-hpv57
#13
Lea Hošnjak, Kristina Fujs Komloš, Boštjan J Kocjan, Katja Seme, Mario Poljak
INTRODUCTION: The present study describes the development and evaluation of the first multiplex type-specific quantitative real-time PCR (RT-PCR), enabling simple, rapid, sensitive, and specific concurrent detection and differentiation of human papillomavirus (HPV) types HPV2, 27, and 57 in a single PCR reaction. RESULTS: The HPV2/27/57 multiplex RT-PCR with a dynamic range of seven orders of magnitude (discriminating 10 to 108 viral genome equivalents/reaction) has an analytical sensitivity of at least 10 viral copies of each targeted HPV type/reaction, and no cross-reactivities were observed among the included targets...
December 2016: Acta Dermatovenerologica Alpina, Panonica, et Adriatica
https://www.readbyqxmd.com/read/28006034/peripheral-organs-of-dengue-fatal-cases-present-strong-pro-inflammatory-response-with-participation-of-ifn-gamma-tnf-alpha-and-rantes-producing-cells
#14
Tiago F Póvoa, Edson R A Oliveira, Carlos A Basílio-de-Oliveira, Gerard J Nuovo, Vera L A Chagas, Natália G Salomão, Ester M Mota, Marciano V Paes
Dengue disease is an acute viral illness caused by dengue virus (DENV) that can progress to hemorrhagic stages leading to about 20000 deaths every year worldwide. Despite many clinical investigations regarding dengue, the immunopathogenic process by which infected patients evolve to the severe forms is not fully understood. Apart from differences in virulence and the antibody cross reactivity that can potentially augment virus replication, imbalanced cellular immunity is also seen as a major concern in the establishment of severe dengue...
2016: PloS One
https://www.readbyqxmd.com/read/27998959/exogenous-h2s-regulates-endoplasmic-reticulum-mitochondria-cross-talk-to-inhibit-apoptotic-pathways-in-stz-induced-type-i-diabetes
#15
Fan Yang, Xiangjing Yu, Ting Li, Jianjun Wu, YaJun Zhao, Aili Sun, Shiyun Dong, Jichao Wu, Xin Zhong, Changqing Xu, Fanghao Lu, Weihua Zhang
BACKGROUND: The upregulation of reactive oxygen species (ROS) is a primary cause of cardiomyocyte apoptosis in Diabetes cardiomyopathy (DCM). Mitofusin-2 (Mfn-2) is a key protein that bridges the mitochondria and endoplasmic reticulum(ER). Hydrogen sulfide (H2S)-mediated cardioprotection is related to antioxidant effects. The present study demonstrated that H2S inhibited the interaction between the ER and mitochondrial apoptotic pathway. METHODS: This study investigated cardiac function, ultrastructural changes in the ER and mitochondria, apoptotic rate using TUNEL and the expression of ER stress-associated proteins and mitochondrial apoptotic proteins in cardiac tissues in STZ-induced type I diabetic rats treated with or without NaHS (donor of H2S)...
December 20, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27997552/hypothalamic-l-histidine-decarboxylase-is-up-regulated-during-chronic-rem-sleep-deprivation-of-rats
#16
Gloria E Hoffman, Michael Koban
A competition of neurobehavioral drives of sleep and wakefulness occurs during sleep deprivation. When enforced chronically, subjects must remain awake. This study examines histaminergic neurons of the tuberomammillary nucleus of the posterior hypothalamus in response to enforced wakefulness in rats. We tested the hypothesis that the rate-limiting enzyme for histamine biosynthesis, L-histidine decarboxylase (HDC), would be up-regulated during chronic rapid eye movement sleep deprivation (REM-SD) because histamine plays a major role in maintaining wakefulness...
2016: PloS One
https://www.readbyqxmd.com/read/27994166/intratumoral-delivery-of-immunotherapy-act-locally-think-globally
#17
REVIEW
M Angela Aznar, Nicola Tinari, Antonio J Rullán, Alfonso R Sánchez-Paulete, María E Rodriguez-Ruiz, Ignacio Melero
Immune mechanisms have evolved to cope with local entry of microbes acting in a confined fashion but eventually inducing systemic immune memory. Indeed, in situ delivery of a number of agents into tumors can mimic in the malignant tissue the phenomena that control intracellular infection leading to the killing of infected cells. Vascular endothelium activation and lymphocyte attraction, together with dendritic cell-mediated cross-priming, are the key elements. Intratumoral therapy with pathogen-associated molecular patterns or recombinant viruses is being tested in the clinic...
January 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27992571/development-of-a-recombinase-polymerase-amplification-assay-for-rapid-detection-of-the-mycobacterium-avium-subsp-paratuberculosis
#18
Sören Hansen, Jenny Schäfer, Kim Fechner, Claus-Peter Czerny, Ahmed Abd El Wahed
BACKGROUND: The detection of Mycobacterium avium subsp. paratuberculosis (MAP) infections in ruminants is crucial to control spread among animals and to humans. Cultivation of MAP is seen as the gold standard for detection, although it is very time consuming and labour intensive. In addition, several PCR assays have been developed to detect MAP in around 90 minutes, but these assays required highly sophisticated equipment as well as lengthy and complicated procedure. METHODOLOGY/PRINCIPAL FINDINGS: In this study, we have developed a rapid assay for the detection of MAP based on the recombinase polymerase amplification (RPA) assay targeting a MAP specific region, the IS900 gene...
2016: PloS One
https://www.readbyqxmd.com/read/27978862/serum-c-reactive-protein-levels-and-body-mass-index-in-children-and-adolescents-with-chd
#19
Maíra Ribas Goulart, Daniela Schneid Schuh, David W Moraes, Sandra Mari Barbiero, Lucia Campos Pellanda
BACKGROUND: The prevalence of overweight in children with CHD is about 26.9%. Increase in adipose tissue is related to the secretion of proinflammatory markers such as C-reactive protein. Assuming that children with CHD are exposed to other inherent risk factors for heart disease, our objective was to evaluate the correlation between levels of C-reactive protein and body mass index in children and adolescents with CHD. METHODS: A cross-sectional study with 377 children and adolescents with CHD in a clinical setting of a reference hospital was carried out...
December 16, 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/27940184/sirna-mediated-in-vivo-gene-knockdown-by-acid-degradable-cationic-nanohydrogel-particles
#20
Nadine Leber, Leonard Kaps, Misbah Aslam, Jonathan Schupp, Alexander Brose, David Schäffel, Karl Fischer, Mustafa Diken, Dennis Strand, Kaloian Koynov, Andrea Tuettenberg, Lutz Nuhn, Rudolf Zentel, Detlef Schuppan
Cationic nanohydrogel particles have become an attractive tool for systemic siRNA delivery, but improvement of their in vivo tolerance is desirable, especially to prevent potential long term side effects by tissue and cellular accumulation. Here we designed novel ketal cross-linked cationic nanohydrogel particles that were assessed for reduced tissue accumulation and robust siRNA delivery in vitro and in vivo. An oligo-amine cross-linker equipped with a ketal moiety in its core was synthesized and applied to nanohydrogel cross-linking of self-assembled reactive ester block copolymers in DMSO...
December 8, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
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