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https://www.readbyqxmd.com/read/28214535/multilevel-ensemble-model-for-prediction-of-iga-and-igg-antibodies
#1
Divya Khanna, Prashant Singh Rana
Identification of antigen for inducing specific class of antibody is prime objective in peptide based vaccine designs, immunodiagnosis, and antibody productions. It's urge to introduce a reliable system with high accuracy and efficiency for prediction. In the present study, a novel multilevel ensemble model is developed for prediction of antibodies IgG and IgA. Epitope length is important in training the model and it is efficient to use variable length of epitopes. In this ensemble approach, seven different machine learning models are combined to predict variable length of epitopes (4 to 50)...
February 15, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28212436/antibody-deficiency-in-patients-with-frequent-exacerbations-of-chronic-obstructive-pulmonary-disease-copd
#2
Brian N McCullagh, Alejandro P Comellas, Zuhair K Ballas, John D Newell, M Bridget Zimmerman, Antoine E Azar
Chronic Obstructive Pulmonary Disease is the third leading cause of death in the US, and is associated with periodic exacerbations, which account for the largest proportion of health care utilization, and lead to significant morbidity, mortality, and worsening lung function. A subset of patients with COPD have frequent exacerbations, occurring 2 or more times per year. Despite many interventions to reduce COPD exacerbations, there is a significant lack of knowledge in regards to their mechanisms and predisposing factors...
2017: PloS One
https://www.readbyqxmd.com/read/28210079/%C3%AE-2-heremans-schmid-glycoprotein-fetuin-a-downregulation-and-its-utility-in-inflammatory-bowel-disease
#3
Anastassios C Manolakis, Gregory Christodoulidis, Andreas N Kapsoritakis, Panagiotis Georgoulias, Elisavet K Tiaka, Kostas Oikonomou, Varvara J Valotassiou, Spyros P Potamianos
AIM: To investigate the impact of inflammatory bowel disease (IBD) on α2-Heremans-Schmid Glycoprotein (AHSG/fetuin A) and potential associations with disease and patient characteristics. METHODS: AHSG serum levels were determined in treatment-naïve newly-diagnosed patients, 96 with ulcerative colitis (UC), 84 with Crohn's disease (CD), 62 with diarrhea-predominant or mixed irritable bowel syndrome (IBS, D- and M- types) and 180 healthy controls (HC), by an enzyme linked immunosorbent assay (ELISA)...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28209808/galactosylation-of-iga1-is-associated-with-common-variation-in-c1galt1
#4
Daniel P Gale, Karen Molyneux, David Wimbury, Patricia Higgins, Adam P Levine, Ben Caplin, Anna Ferlin, Peiran Yin, Christopher P Nelson, Horia Stanescu, Nilesh J Samani, Robert Kleta, Xueqing Yu, Jonathan Barratt
IgA nephropathy (IgAN), an important cause of kidney failure, is characterized by glomerular IgA deposition and is associated with changes in O-glycosylation of the IgA1 molecule. Here, we sought to identify genetic factors contributing to levels of galactose-deficient IgA1 (Gd-IgA1) in white and Chinese populations. Gd-IgA1 levels were elevated in IgAN patients compared with ethnically matched healthy subjects and correlated with evidence of disease progression. White patients with IgAN exhibited significantly higher Gd-IgA1 levels than did Chinese patients...
February 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28209246/the-clinical-course-of-iga-nephropathy-after-kidney-transplantation-and-its-management
#5
REVIEW
Sophia Lionaki, Konstantinos Panagiotellis, Christine Melexopoulou, John N Boletis
Immunoglobulin (Ig) A nephropathy is one of the most common primary glomerulonephritides worldwide causing end stage renal disease in up to 20-40% of affected patients, nearly two decades post diagnosis. Kidney transplantation is the treatment of choice for patients with renal failure, secondary to glomerular diseases. However, IgA nephropathy has a strong tendency to recur in the graft, and although initially thought to be a benign condition, several reports of graft loss, due to recurrent IgA nephropathy, there have been over the last three decades...
February 2, 2017: Transplantation Reviews
https://www.readbyqxmd.com/read/28208846/a-rare-case-of-multiple-myeloma-with-biclonal-gammopathy
#6
Abhik Banerjee, Kshama Pimpalgaonkar, Alap Lukiyas Christy
Multiple myeloma is a debilitating malignancy arising from plasma cells. These malignant plasma cells called myeloma cells proliferate and infiltrate the bone marrow. The disease is characterized by the presence of a monoclonal protein in plasma and/or the urine. In this report, we present a case of biclonal multiple myeloma which showed two M bands on serum protein electrophoresis. The patient had elevated serum IgA and IgG levels. To reveal the nature of M bands or clonality, serum Immunofixation study was performed which revealed IgA with Lambda and IgG with Kappa light chains...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208683/plasma-gelsolin-induced-glomerular-fibrosis-via-the-tgf-%C3%AE-1-smads-signal-transduction-pathway-in-iga-nephropathy
#7
Lei Zhang, Changsong Han, Fei Ye, Yan He, Yinji Jin, Tianzhen Wang, Yiqi Wu, Yang Jiang, Fengmin Zhang, Xiaoming Jin
Glomerular fibrosis has been shown to be closely related to the progression and prognosis of IgA nephropathy (IgAN). However, mechanism underlying IgAN glomerular fibrosis remains unclear. Recently, our study showed that plasma gelsolin (pGSN) was decreased in the serum of an IgAN mouse model and that pGSN deposition was found in the glomeruli. Another cytokine, TGF-β1, which is closely related to glomerular fibrosis, was also found to be highly expressed in the glomeruli. In the present study, we report that pGSN induces glomerular fibrosis through the TGF-β1/Smads signal transduction pathway...
February 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208594/immunomodulatory-and-anti-ibdv-activities-of-the-polysaccharide-aex-from-coccomyxa-gloeobotrydiformis
#8
Qiang Guo, Qiang Shao, Wenping Xu, Lei Rui, Ryo Sumi, Fumio Eguchi, Zandong Li
A number of polysaccharides have been reported to show immunomodulatory and antiviral activities against various animal viruses. AEX is a polysaccharide extracted from the green algae, Coccomyxa gloeobotrydiformis. The aim of this study was to examine the function of AEX in regulating the immune response in chickens and its capacity to inhibit the infectious bursal disease virus (IBDV), to gain an understanding of its immunomodulatory and antiviral ability. Here, preliminary immunological tests in vitro showed that the polysaccharide AEX can activate the chicken peripheral blood molecular cells' (PBMCs) response by inducing the production of cytokines and NO, promote extracellular antigen presentation but negatively regulate intracellular antigen presentation in chicken splenic lymphocytes, and promote the proliferation of splenic lymphocytes and DT40 cells...
February 10, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28207635/kidney-transplantation-rates-across-glomerulonephritis-subtypes-in-the-united-states
#9
Michelle M O'Shaughnessy, Sai Liu, Maria E Montez-Rath, Richard A Lafayette, Wolfgang C Winkelmayer
BACKGROUND: Whether kidney transplantation rates differ by glomerulonephritis (GN) subtype remains largely unknown. METHODS: Using the US Renal Data System, we identified all adult patients with ESRD attributed to 1 of 6 GN subtypes who initiated dialysis in the US (1996-2013). Patients with diabetic nephropathy (DN) and autosomal-dominant polycystic kidney disease (ADPKD) served as "external" non-GN comparators. Using Cox proportional hazards regression, with death considered a competing risk, we estimated hazard ratios [HRs (95% confidence intervals)] for first kidney transplantation, controlling for year, demographics, comorbidities, socioeconomic factors, and Organ Procurement Organization (OPO)...
February 15, 2017: Transplantation
https://www.readbyqxmd.com/read/28207487/antibody-mediated-immune-exclusion-of-hiv
#10
Ruth M Ruprecht, Samir K Lakhashe
PURPOSE OF REVIEW: Although approximately 90% of all HIV transmissions in humans occur through mucosal contact, the induction of mucosal anti-HIV immune responses has remained understudied. Here we summarize data demonstrating the powerful protection that is achievable at mucosal frontlines through virus-specific mucosal IgA alone or combined with IgG. RECENT FINDINGS: Passive immunization with different monoclonal antibody subclasses but identical epitope specificity (the conserved V3-loop crown of HIV gp120) has revealed that the dimeric IgA1 (dIgA1) form with its open hinge can prevent simian-human immunodeficiency virus (SHIV) acquisition in rhesus macaques at a higher rate than dIgA2...
February 15, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28207301/mucosal-chemokines
#11
Marcela Hernández-Ruiz, Albert Zlotnik
Several chemokines have important functions in mucosal immunity. While there are many chemokines, 4 of them (CCL25, CCL28, CXCL14, and CXCL17) are especially important in mucosal immunity because they are homeostatically expressed in mucosal tissues. Of these, only CCL25 and CCL28 have been widely recognized as mucosal chemokines. In this study, we review the physiology of these chemokines with specific emphasis on their function in mucosal immunity. CCL25 recruits certain important subsets of T cells that express CCR9 to the small intestine...
February 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28205112/autochthonous-sporadic-acute-hepatitis-e-caused-by-two-distinct-subgenotype-3b-hepatitis-e-virus-strains-with-only-90-nucleotide-identity
#12
Yasuko Yamaguchi, Hitoshi Takagi, Yuhei Suzuki, Kyoko Maruhashi, Takashi Kosone, Satoru Kakizaki, Ken Sato, Masanobu Yamada, Shigeo Nagashima, Masaharu Takahashi, Hiroaki Okamoto
Hepatitis E, which is caused by hepatitis E virus (HEV), is a public health concern in Japan, where the zoonotic food-borne transmission of HEV from domestic pigs and wild boars plays an important role. A 44-year-old Japanese man with autochthonous sporadic acute hepatitis E was admitted with general fatigue and moderate liver dysfunction. In the present study, two distinct HEV strains were recovered from the patient, who had consumed the raw or undercooked pig liver and intestine two or three times per week for 3 months before the disease onset...
February 15, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28203239/sublingual-priming-with-a-hiv-gp41-based-subunit-vaccine-elicits-mucosal-antibodies-and-persistent-b-memory-responses-in-non-human-primates
#13
Selma Bekri, Pierre Bourdely, Carmelo Luci, Nathalie Dereuddre-Bosquet, Bin Su, Frédéric Martinon, Véronique M Braud, Irene Luque, Pedro L Mateo, Sara Crespillo, Francisco Conejero-Lara, Christiane Moog, Roger Le Grand, Fabienne Anjuère
Persistent B cell responses in mucosal tissues are crucial to control infection against sexually transmitted pathogens like human immunodeficiency virus 1 (HIV-1). The genital tract is a major site of infection by HIV. Sublingual (SL) immunization in mice was previously shown to generate HIV-specific B cell immunity that disseminates to the genital tract. We report here the immunogenicity in female cynomolgus macaques of a SL vaccine based on a modified gp41 polypeptide coupled to the cholera toxin B subunit designed to expose hidden epitopes and to improve mucosal retention...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28203107/clinical-validation-of-immunoglobulin-a-nephropathy-diagnosis-in-swedish-biopsy-registers
#14
Simon Jarrick, Sigrid Lundberg, Adina Welander, C Michael Fored, Jonas F Ludvigsson
AIMS: The aims of this study were to validate the diagnosis of IgA nephropathy (IgAN) in Swedish biopsy registers against patient charts and to describe the clinical characteristics of patients with a biopsy indicating IgAN. METHODS: This is a population-based cohort study. Out of 4,069 individuals with a renal biopsy consistent with IgAN (biopsies performed in 1974-2011), this study reviewed patient charts of a random subset of 127 individuals. Clinical and biopsy characteristics at the time of biopsy were evaluated, and positive predictive values (PPV) were calculated with 95% confidence intervals (CI)...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28202872/duodenal-ulcer-iga-vasculitis
#15
Kazuaki Fukushima, Naoki Yanagisawa
No abstract text is available yet for this article.
2017: Internal Medicine
https://www.readbyqxmd.com/read/28202751/superiority-in-rhesus-macaques-of-targeting-hiv-1-env-gp140-to-cd40-versus-lox-1-in-combination-with-replication-competent-nyvac-kc-for-induction-of-env-specific-antibody-and-t-cell-responses
#16
Gerard Zurawski, Xiaoying Shen, Sandra Zurawski, Georgia D Tomaras, David C Montefiori, Mario Roederer, Guido Ferrari, Christine Lacabaratz, Peter Klucar, Zhiqing Wang, Kathryn E Foulds, Shing-Fen Kao, Xuesong Yu, Alicia Sato, Nicole L Yates, Celia LaBranche, Sherry Stanfield-Oakley, Karen Kibler, Bertram Jacobs, Andres Salazar, Steve Self, Jimmy Fulp, Raphael Gottardo, Lindsey Galmin, Deborah Weiss, Anthony Cristillo, Giuseppe Pantaleo, Yves Levy
We compared the HIV-1-specific immune responses generated by targeting HIV-1 envelope protein (Env gp140) to either CD40 or LOX-1, two endocytic receptors on dendritic cells (DCs), in Rhesus macaques primed with a poxvirus vector (NYVAC-KC) expressing Env gp140. The DC-targeting vaccines, humanized recombinant monoclonal antibodies fused to Env gp140, were administered as a boost with poly ICLC adjuvant either alone or co-administered with the NYVAC-KC vector. All the DC-targeting vaccine administrations with poly ICLC increased the low-level serum anti-Env IgG responses elicited by NYVAC-KC priming significantly more (up to P =0...
February 15, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28201996/urinary-sediment-mirnas-reflect-tubulointerstitial-damage-and-therapeutic-response-in-iga-nephropathy
#17
Shuang Liang, Guang-Yan Cai, Zhi-Yu Duan, Shu-Wen Liu, Jie Wu, Yang Lv, Kai Hou, Zuo-Xiang Li, Xue-Guang Zhang, Xiang-Mei Chen
BACKGROUND: Immunoglobulin A nephropathy (IgAN) is the most common glomerulonephritis worldwide. The clinical spectrum of IgAN varies from minor urinary abnormalities to rapidly progressive renal failure. Evaluation of the disease by repeated renal biopsy is not practical due to its invasive procedure. Urinary sediment miRNAs promise to serve as non-invasive biomarkers to assess kidney injury of IgAN. METHODS: Fifty two biopsy-proven IgAN patients and twenty five healthy controls were enrolled in the study...
February 15, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28199170/antibody-repertoire-development-in-swine
#18
J E Butler, Nancy Wertz, Marek Sinkora
We describe the domestication of the species, explore its value to agriculture and bioscience, and compare its immunoglobulin (Ig) genes to those of other vertebrates. For encyclopedic information, we cite earlier reviews and chapters. We provide current gene maps for the heavy and light chain loci and describe their polygeny and polymorphy. B-cell and antibody repertoire development is a major focus, and we present findings that challenge several mouse-centric paradigms. We focus special attention on the role of ileal Peyer's patches, the largest secondary lymphoid tissues in newborn piglets and a feature of all artiodactyls...
February 8, 2017: Annual Review of Animal Biosciences
https://www.readbyqxmd.com/read/28197885/c4d-deposits-in-iga-nephropathy-where-does-complement-activation-come-from
#19
EDITORIAL
Rosanna Coppo
No abstract text is available yet for this article.
February 14, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28196748/up-regulation-of-cx3cr1-on-tonsillar-cd8-positive-cells-in-patients-with-iga-nephropathy
#20
Ryuki Otaka, Miki Takahara, Seigo Ueda, Toshihiro Nagato, Kan Kishibe, Kenichiro Nomura, Akihiro Katada, Tatsuya Hayashi, Yasuaki Harabuchi
Although tonsillectomy are used as therapeutic options to prevent chronic renal failure in IgA nephropathy (IgAN) patients, the relationship between IgAN and tonsils is not fully proved by basic research. Recently, circulating CX3CR1-positive cells were reportedly involved in promoting hematuria in patients with IgAN. In this study, we focused on the expression of CX3CR1 in tonsillar mononuclear cells in IgAN patients. Immunohistological analysis revealed greater distribution of CX3CR1-positive cells in the inter-follicular area of tonsils in IgAN patients than in non-IgAN patients...
February 11, 2017: Human Immunology
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