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https://www.readbyqxmd.com/read/28325643/alpha-cells-the-main-source-of-il-1%C3%AE-in-human-pancreas
#1
Florence Anquetil, Somayeh Sabouri, Charles Thivolet, Teresa Rodriguez-Calvo, Jose Zapardiel-Gonzalo, Natalie Amirian, Darius Schneider, Ericka Castillo, Yasaman Lajevardi, Matthias G von Herrath
Interleukin-1β (IL-1β) is known to trigger beta cell dysfunction in vitro and could potentially play a role during the pathogenesis of type 1 diabetes and type 2 diabetes. However, several clinical trials attempting to block IL-1β function have had minimal success. We therefore re-investigated local expression of IL-1β in human diabetic and non-diabetic pancreata. We obtained pancreatic tissue sections from the Network for Pancreatic Organ Donors with Diabetes (nPOD) including non-diabetic (n = 9), non-diabetic auto-antibody positive (AAb+, n = 5), type 1 diabetes (n = 6), and type 2 diabetes (n = 6) donors...
March 18, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28290848/-autoimmunity-and-prognosis-of-patients-with-morphologically-documented-myocarditis
#2
D A Khashchevskaya, L B Mitrofanova, E A Belyakova, O V Beschuk, D A Zverev, D S Lebedev, O M Moiseeva
AIM: to assess clinical and prognostic value of circulating cardiospecific autoantibodies (AAB) and CD4+ T-regulatory cells in patients with myocarditis. MATERIAL AND METHODS: We included into this study 47 patients with lymphocytic myocarditis verified by analysis of histological and immunohistochemical data. Comparison group consisted of 30 practically healthy persons. Content of marker cardiotropic AAT were measured with the help of standardized immune enzyme test-systems...
June 2016: Kardiologiia
https://www.readbyqxmd.com/read/28277720/artificial-grammar-learning-in-tamarins-saguinus-oedipus-in-varying-stimulus-contexts
#3
Julie J Neiworth, Justin M London, Michael J Flynn, Deborah D Rupert, Owen Alldritt, Caleb Hyde
The human ability to detect regularities in sound sequences is a fundamental substrate of our language faculty. However, is this an ability exclusive to human language processing, or have we usurped a more general learning mechanism for this purpose, one shared with other species? The current study is an attempt to replicate and extend Hauser, Weiss, and Marcus's (2002) retracted study (2010) of artificial grammar learning in tamarins to determine if tamarins can detect an underlying grammatical structure in a pattern of sounds...
March 9, 2017: Journal of Comparative Psychology
https://www.readbyqxmd.com/read/28277014/-you-are-labelled-by-your-children-s-disability-a-community-based-participatory-study-of-stigma-among-somali-parents-of-children-with-autism-living-in-the-united-kingdom
#4
Lucy Ellen Selman, Fiona Fox, Nura Aabe, Katrina Turner, Dheeraj Rai, Sabi Redwood
OBJECTIVES: Social stigma is commonly experienced by parents of children with autism. Our aim was to understand the nature of stigma experienced by Somali parents of children with autism in the United Kingdom (UK), and to consider how they coped with or resisted such stigma. DESIGN: We used a community-based participatory research approach, collaborating with a community organisation of Somali parents. In-depth interviews with simultaneous translation were conducted with 15 Somali parents of children with autism living in Bristol, UK, in 2015...
March 2, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28276515/mri-assessment-of-cardiomyopathy-induced-by-%C3%AE-1-adrenoreceptor-autoantibodies-and-protection-through-%C3%AE-3-adrenoreceptor-overexpression
#5
Laetitia Vanhoutte, Céline Guilbaud, Ruben Martherus, Caroline Bouzin, Bernard Gallez, Chantal Dessy, Jean-Luc Balligand, Stéphane Moniotte, Olivier Feron
The cardiopathogenic role of autoantibodies (aabs) directed against β1-adrenoreceptors (β1-AR) is well established. In mouse models, they cause progressive dilated cardiomyopathy (DCM) whose characterization with echocardiography requires prolonged protocols with numerous animals, complicating the evaluation of new treatments. Here, we report on the characterization of β1-aabs-induced DCM in mice using 11.7T MRI. C57BL/6J mice (n = 10 per group) were immunized against the β1-AR and left ventricular (LV) systolic function was assessed at 10, 18 and 27 weeks...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28272216/nonorgan-specific-autoantibodies-in-hiv-infected-patients-in-the-haart-era
#6
Laura Iordache, Djaouida Bengoufa, Olivier Taulera, Agathe Rami, Caroline Lascoux-Combe, Nesrine Day, Maguy Parrinello, Pierre-Olivier Sellier, Jean-Michel Molina, Alfred Mahr
Nonorgan-specific autoantibodies (AAbs) are used for diagnosing autoimmune diseases but can also be detected in other conditions. We carried out a cross-sectional study with the aim to screen HIV1-infected patients in the era of highly active antiretroviral therapy (HAART) for AAbs and to analyze the association of their presence with hypergammaglobulinemia and immunovirological status.Blood samples from HIV1-infected patients without major concomitant illnesses followed in 2 hospitals in Paris, France were tested for immunovirological status, serum immunoglobulin G (IgG) level, antinuclear antibodies (ANAs), anti-double-stranded DNA (anti-dsDNA), anti-extractable nuclear antigens (anti-ENAs), anticardiolipin (aCL), anti-β2glycoprotein1 (anti-β2GP1), and antineutrophil cytoplasmic antibodies (ANCAs)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28262783/increased-circulating-%C3%AE-2-adrenergic-receptor-autoantibodies-are-associated-with-smoking-related-emphysema
#7
Jia-Yi Hu, Bei-Bei Liu, Yi-Peng Du, Yuan Zhang, Yi-Wei Zhang, You-Yi Zhang, Ming Xu, Bei He
Smoking is a dominant risk factor for chronic obstructive pulmonary disease (COPD) and emphysema, but not every smoker develops emphysema. Immune responses in smokers vary. Some autoantibodies have been shown to contribute to the development of emphysema in smokers. β2-adrenergic receptors (β2-ARs) are important targets in COPD therapy. β2-adrenergic receptor autoantibodies (β2-AAbs), which may directly affect β2-ARs, were shown to be increased in rats with passive-smoking-induced emphysema in our current preliminary studies...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28237188/identification-of-acetic-acid-bacteria-through-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-and-report-of-gluconobacter-nephelii-kommanee-et-al-2011-and-gluconobacter-uchimurae-tanasupawat-et-al-2012-as-later-heterotypic-synonyms
#8
Leilei Li, Ilse Cleenwerck, Luc De Vuyst, Peter Vandamme
The classification and identification of acetic acid bacteria (AAB) underwent much change during the last two decades. However, several closely related AAB species are difficult to differentiate and rapid and correct species level identification remains challenging. In the present study, 281 well-characterized AAB strains representing AAB species of the family Acetobacteraceae were used to construct a matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) identification database...
February 15, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28191285/autoantibodies-against-oncogenic-erg-protein-in-prostate-cancer-potential-use-in-diagnosis-and-prognosis-in-a-panel-with-c-myc-amacr-and-herv-k-gag
#9
Anshu Rastogi, Amina Ali, Shyh-Han Tan, Sreedatta Banerjee, Yongmei Chen, Jennifer Cullen, Charles P Xavier, Ahmed A Mohamed, Lakshmi Ravindranath, Jigisha Srivastav, Denise Young, Isabell A Sesterhenn, Jacob Kagan, Sudhir Srivastava, David G McLeod, Inger L Rosner, Gyorgy Petrovics, Albert Dobi, Shiv Srivastava, Alagarsamy Srinivasan
Overdiagnosis and overtreatment of prostate cancer (CaP) is attributable to widespread reliance on PSA screening in the US. This has prompted us and others to search for improved biomarkers for CaP, to facilitate early detection and disease stratification. In this regard, autoantibodies (AAbs) against tumor antigens could serve as potential candidates for diagnosis and prognosis of CaP. Towards this, our goals were: i) To investigate whether AAbs against ERG oncoprotein (overexpressed in 25-50% of Caucasian American and African American CaP) are present in the sera of CaP patients; ii) To evaluate an AAb panel to enhance CaP detection...
November 2016: Genes & Cancer
https://www.readbyqxmd.com/read/28190808/quantification-of-triacylglycerol-molecular-species-in-edible-fats-and-oils-by-gas-chromatographyflame-ionization-detector-using-correction-factors
#10
Kazuaki Yoshinaga, Junji Obi, Toshiharu Nagai, Hiroyuki Iioka, Akihiko Yoshida, Fumiaki Beppu, Naohiro Gotoh
In the present study, the resolution parameters and correction factors (CFs) of triacylglycerol (TAG) standards were estimated by gas chromatography-flame ionization detector (GC-FID) to achieve the precise quantification of the TAG composition in edible fats and oils. Forty seven TAG standards comprising capric acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, palmitoleic acid, stearic acid, oleic acid, linoleic acid, and/or linolenic acid were analyzed, and the CFs of these TAGs were obtained against tripentadecanoyl glycerol as the internal standard...
February 10, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28190713/transient-atrial-fibrillation-after-open-abdominal-aortic-revascularization-surgery-is-associated-with-increased-length-of-stay-mortality-and-readmission-rates
#11
Barbara A Blanco, Anai N Kothari, Pegge M Halandras, Robert H Blackwell, Dawn M Graunke, Paul C Kuo, Jae S Cho
BACKGROUND: It is well established that transient postoperative atrial fibrillation (TPAF) is associated with adverse postoperative outcomes after major cardiac and noncardiac operations. The purpose of this study was to elucidate the incidence, impact, and risk factors associated with the development of TPAF in patients undergoing revascularization surgery for occlusive diseases of the abdominal aorta and its branches (AAB). METHODS: By use of the Healthcare Cost and Utilization Project State Inpatient Database from Florida and California, patients who underwent open revascularization of AAB between 2006 and 2011 were identified...
February 9, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28187326/effect-of-chitosan-and-so2-on-viability-of-acetobacter-strains-in-wine
#12
Maria José Valera, Florencia Sainz, Albert Mas, María Jesús Torija
Wine spoilage is an important concern for winemakers to preserve the quality of their final product and avoid contamination throughout the production process. The use of sulphur dioxide (SO2) is highly recommended to prevent wine spoilage due to its antimicrobial activity. However, SO2 has a limited effect on the viability of acetic acid bacteria (AAB). Currently, the use of SO2 alternatives is favoured in order to reduce the use of chemicals and improve stabilization in winemaking. Chitosan is a biopolymer that is approved by the European authorities and the International Organization of Vine and Wine to be used as a fining agent and antimicrobial in wines...
February 1, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28178782/formation-of-aab-type-collagen-heterotrimers-from-designed-cationic-and-aromatic-collagen-mimetic-peptides-evaluation-of-the-c-terminal-cation-%C3%AF-interactions
#13
Chu-Harn Chiang, Yi-Hsuan Fu, Jia-Cherng Horng
Most of natural collagens are heterotrimers composed of two (AAB) or three (ABC) different peptide chains, and thus heterotrimeric constructs are preferable to mimic natural collagens. Exploring the forces to assemble synthetic collagen-mimetic peptides (CMPs) into heterotrimers has been an attractive topic in preparing collagen-related biomaterials. Here we designed and synthesized two cationic CMPs (CR and CK) in which multiple Arg or Lys residues are installed in their C-terminal region, and one aromatic CMP (CF) whose C-terminal end contains multiple Phe residues...
March 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28163240/cardiomyopathy-an-approach-to-the-autoimmune-background
#14
REVIEW
Niels-Peter Becker, Johannes Müller, Peter Göttel, Gerd Wallukat, Ingolf Schimke
Autoimmunity is increasingly accepted as the origin or amplifier of various diseases. In contrast to classic autoantibodies (AABs), which induce immune responses resulting in the destruction of the affected tissue, an additional class of AABs is directed against G-protein-coupled receptors (GPCRs; GPCR-AABs). GPCR-AABs functionally affect their related GPCRs for activation of receptor mediated signal cascades. Diseases which are characterized by the presence of GPCR-AABs with evidence for disease-specific pathogenic activity could be named "functional autoantibody disease"...
February 2, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28137667/identification-of-novel-autoantigens-via-mass-spectroscopy-based-antibody-mediated-identification-of-autoantigens-ms-amida-using-immune-thrombocytopenic-purpura-itp-as-a-model-disease
#15
Julian Kamhieh-Milz, Viktor Sterzer, Hatice Celik, Omid Khorramshahi, Reham Fadl Hassan Moftah, Abdulgabar Salama
Immune thrombocytopenic purpura (ITP) is one of the best characterized autoimmune diseases. Autoantibodies (AABs) against platelet antigens are considered as the diagnostic hallmark of ITP, but are detectable in only 50% of patients. We designed and applied a novel proteomic approach termed Mass Spectroscopy-based Antibody-Mediated Identification of Autoantigens (MS-AMIDA) for platelet antigens. Patients were separated into patients with classical AABs [ITP(+)] and patients without AABs [ITP(-)]. Altogether, 181 potential AAGs were found in ITP(+) and 135 AAGs in ITP(-), with 34 and 23 AAGs reproducibly found in two runs of MS-AMIDA...
March 22, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28115475/serum-trypsinogen-levels-in-type-1-diabetes
#16
Xia Li, Martha Campbell-Thompson, Clive H Wasserfall, Kieran McGrail, Amanda Posgai, Andrew R Schultz, Todd M Brusko, Jonathan Shuster, Faming Liang, Andrew Muir, Desmond Schatz, Michael J Haller, Mark A Atkinson
OBJECTIVE: The pancreas in type 1 diabetes exhibits decreased size (weight/volume) and abnormal exocrine morphology. Serum trypsinogen levels are an established marker of pancreatic exocrine function. As such, we hypothesized that trypsinogen levels may be reduced in patients with pre-type 1 diabetes and type 1 diabetes compared with healthy control subjects. RESEARCH DESIGN AND METHODS: Serum trypsinogen levels were determined in 100 persons with type 1 diabetes (72 new-onset, 28 established), 99 autoantibody-positive (AAb+) subjects at varying levels of risk for developing this disease, 87 AAb-negative (AAb-) control subjects, 91 AAb- relatives with type 1 diabetes, and 18 patients with type 2 diabetes...
January 23, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28099331/atorvastatin-induced-necrotizing-autoimmune-myositis-an-emerging-dominant-entity-in-patients-with-autoimmune-myositis-presenting-with-a-pure-polymyositis-phenotype
#17
Yves Troyanov, Océane Landon-Cardinal, Marvin J Fritzler, José Ferreira, Ira N Targoff, Eric Rich, Michelle Goulet, Jean-Richard Goulet, Josiane Bourré-Tessier, Yves Robitaille, Julie Drouin, Alexandra Albert, Jean-Luc Senécal
The general aim of this study was to evaluate the disease spectrum in patients presenting with a pure polymyositis (pPM) phenotype. Specific objectives were to characterize clinical features, autoantibodies (aAbs), and membrane attack complex (MAC) in muscle biopsies of patients with treatment-responsive, statin-exposed necrotizing autoimmune myositis (NAM). Patients from the Centre hospitalier de l'Université de Montréal autoimmune myositis (AIM) Cohort with a pPM phenotype, response to immunosuppression, and follow-up ≥3 years were included...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28098982/glycine-substitutions-in-collagen-heterotrimers-alter-triple-helical-assembly
#18
Katherine A Clements, Amanda M Acevedo-Jake, Douglas R Walker, Jeffrey D Hartgerink
Osteogenesis imperfecta typically results from missense mutations in the collagen genome where the required glycine residues are replaced with another amino acid. Many models have attempted to replicate the structure of mutated collagen on the triple helix level. However, composition and register control of the triple helix is complicated and requires extreme precision, especially when these destabilizing mutations are present. Here we present mutations to a composition- and register-controlled AAB helix where one of the requisite glycines in the A chain of the triple helix is changed to serine or alanine...
January 18, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28004477/revisiting-autoimmune-gastritis-in-children-and-adolescents-with-type-1-diabetes
#19
Alix Besançon, Bénédicte Michaud, Jacques Beltrand, Tania Goncalves, Jean-Philippe Jais, Michel Polak, Lucienne Chatenoud, Jean-Jacques Robert
OBJECTIVE: Assess the frequency of anti-H(+) /K(+) adenosine triphosphatase (ATPase) autoantibodies (AAB) and symptoms of autoimmune gastritis in children and adolescents with type 1 diabetes (T1D). RESEARCH DESIGN AND METHODS: Anti-H(+) /K(+) ATPase AAB were measured in 402 children and adolescents (210 boys and 192 girls, 11.1 ± 4.5 years) treated for T1D (screened positive for β-cell AAB), along with search of symptoms of anemia (hemoglobin, serum iron, and ferritin levels) and gastric pain...
December 22, 2016: Pediatric Diabetes
https://www.readbyqxmd.com/read/27989757/retinal-pigment-epithelium-and-microglia-express-the-cd5-antigen-like-protein-a-novel-autoantigen-in-age-related-macular-degeneration
#20
Alessandro Iannaccone, T J Hollingsworth, Diwa Koirala, David D New, Nataliya I Lenchik, Sarka Beranova-Giorgianni, Ivan C Gerling, Marko Z Radic, Francesco Giorgianni
We report on a novel autoantigen expressed in human macular tissues, identified following an initial Western blot (WB)-based screening of sera from subjects with age-related macular degeneration (AMD) for circulating auto-antibodies (AAbs) recognizing macular antigens. Immunoprecipitation, 2D-gel electrophoresis (2D-GE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), direct enzyme-linked immunosorbent assays (ELISA), WBs, immunohistochemistry (IHC), human primary and ARPE-19 immortalized cell cultures were used to characterize this novel antigen...
December 15, 2016: Experimental Eye Research
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