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Immunoglobulins

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https://www.readbyqxmd.com/read/28651294/-ige-and-anti-ige-in-asthma-a-chequered-history
#1
M Lommatzsch, K Geißler, K-C Bergmann, J Christian Virchow
A long and winding road led to the discovery of immunoglobulin E (IgE) in 1966 and 1967. We are currently on a long and winding road to understand the immunologic basis of the clinical effects of the anti-IgE antibody omalizumab in asthma. It is possible that patients with asthma (as patients with chronic spontaneous urticaria) benefit in different immunologic ways from omalizumab treatment. This article reviews the history of IgE discovery and current concepts of anti-IgE therapy in asthma.
June 2017: Pneumologie
https://www.readbyqxmd.com/read/28651183/investigating-the-effect-of-different-transducer-stiffness-values-on-the-contactin-complex-detachment-by-steered-molecular-dynamics
#2
Parnian Kianfar, Nabiollah Abolfathi, Navid Zarif Karimi
This study investigated the adhesion behavior of Contactin4 (CNTN4), a member of Immunoglobulin Super Family (Ig-SF) of cell adhesion molecules. Contactin4 plays a crucial role in the formation, maintenance, and plasticity of neuronal networks. Contactin in its complex configuration with protein tyrosine phosphatase gamma (PTPRG) was selected for simulation. By utilizing Steered Molecular Dynamics (SMD), the uniaxial force was applied to induce unbinding of the complex, and the force-induced detachment of complex components was probed...
June 2, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28651006/application-of-laboratory-and-portable-attenuated-total-reflectance-infrared-spectroscopic-approaches-for-rapid-quantification-of-alpaca-serum-immunoglobulin-g
#3
Ibrahim Elsohaby, Jennifer B Burns, Christopher B Riley, R Anthony Shaw, J Trenton McClure
The objective of this study was to develop and compare the performance of laboratory grade and portable attenuated total reflectance infrared (ATR-IR) spectroscopic approaches in combination with partial least squares regression (PLSR) for the rapid quantification of alpaca serum IgG concentration, and the identification of low IgG (<1000 mg/dL), which is consistent with the diagnosis of failure of transfer of passive immunity (FTPI) in neonates. Serum samples (n = 175) collected from privately owned, healthy alpacas were tested by the reference method of radial immunodiffusion (RID) assay, and laboratory grade and portable ATR-IR spectrometers...
2017: PloS One
https://www.readbyqxmd.com/read/28649578/anti-high-mobility-group-box-1-antibody-ameliorates-albuminuria-in-mrl-lpr-lupus-prone-mice
#4
Haruki Watanabe, Katsue S Watanabe, Keyue Liu, Sumie Hiramatsu, Sonia Zeggar, Eri Katsuyama, Noriko Tatebe, Akiya Akahoshi, Fumiaki Takenaka, Takahisa Hanada, Masaru Akehi, Takanori Sasaki, Ken-Ei Sada, Eiji Matsuura, Masahiro Nishibori, Jun Wada
We evaluated the efficacy of a neutralizing anti-high mobility group box 1 (HMGB1) monoclonal antibody in MRL/lpr lupus-prone mice. The anti-HMGB1 monoclonal antibody (5 mg/kg weight) or class-matched control immunoglobulin G2a (IgG2a) was administered intravenously twice a week for 4-15 weeks. Urine albumin was monitored, and histological evaluation of the kidneys was conducted at 16 weeks. Lymphadenopathies were evaluated by 1-(2'-deoxy-2'-[(18)F]fluoro-β-D-arabinofuranosyl)cytosine ([(18)F]FAC) positron emission tomography/computed tomography (PET/CT) at 12 weeks...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28648672/prognostic-significance-of-interventricular-septal-thickness-in-patients-with-al-amyloidosis
#5
Hyunsoo Cho, Soo-Jeong Kim, Chi Young Shim, Geu-Ru Hong, Jong-Won Ha, Yu Ri Kim, Woo Ick Yang, Haerim Chung, Ji Eun Jang, June-Won Cheong, Yoo Hong Min, Jin Seok Kim
The major prognostic determinant of immunoglobulin light chain (AL) amyloidosis is cardiac involvement. However, the role of interventricular septal thickness (IVST), which reflects the extent of cardiac involvement, remains unclear. Therefore, we analyzed 77 patients with newly diagnosed AL amyloidosis and evaluated the prognostic role of IVST. Fifty patients (64.9%) had cardiac involvement and 17 patients (22.1%) showed IVST >15mm. Among all patients, the revised Mayo Clinic Stage III-IV and IVST >15mm were independently associated with inferior overall survival (OS) in a multivariable analysis...
June 16, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28648664/high-dose-ivig-successfully-reduces-high-rhgaa-igg-antibody-titers-in-a-crim-negative-infantile-pompe-disease-patient
#6
Mugdha Rairikar, Zoheb B Kazi, Ankit Desai, Crista Walters, Amy Rosenberg, Priya S Kishnani
Alglucosidase alfa (rhGAA) has altered the course of an otherwise fatal outcome in classic infantile Pompe disease (IPD), which presents with cardiomyopathy and severe musculoskeletal involvement. However, the response to therapy is determined by several factors including the development of high and sustained antibody titers (HSAT) to rhGAA. Cross-reactive immunologic material (CRIM) negative patients are at the highest risk for development of HSAT. Immune tolerance induction (ITI) with methotrexate, rituximab, and intravenous immunoglobulin (IVIG) has been largely successful in preventing the immune response and in achieving tolerance when done in conjunction with enzyme replacement therapy (ERT) initiation...
May 18, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28648625/anti-erythrocyte-igg-in-hamsters-with-acute-experimental-infection-by-leptospira-interrogans-serovar-canicola
#7
Ânderson O Sobroza, Guilherme L Dorneles, Márcia S N Machado, Cássia B Silva, Letícia Petry, Andressa Schafer, Raqueli T França, Cinthia M de Andrade, Alfredo Q Antoniazzi, Alexandre A Tonin, Sonia T A Lopes, Micheli M Pillat
The aim of this study was to evaluate the behavior of erythrocyte and platelet, as immunological markers, as well as evaluate the involvement of these factors in hemolytic and hemorrhagic reactions in hamsters experimentally infected by Leptospira interrogans Serovar Canicola. Our experimental design was composed by two randomized groups: Infected Group (IG) (n = 12) and control group (CG) (n = 6). Ninety-six hours after the inoculation, the presence of immunoglobulins (IgG and IgM) and complement C3 levels, related to erythrocytes and platelets, was assessed...
June 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28648573/personalized-treatment-with-immunoadsorption-and-intravenous-immunoglobulin-in-a-case-of-severe-rh-alloimmunization-during-pregnancy-unresponsive-to-plasma-exchange
#8
Anna Colpo, Tiziana Tison, Maria Teresa Gervasi, Cinzia Vio, Maria Vicarioto, Giustina De Silvestro, Piero Marson
INTRODUCTION: Despite prophylaxis, a small proportion of RhD-negative women may develop anti-D antibodies after a sensitizing event occurring during pregnancy or delivery of a D-positive baby. Intrauterine transfusion (IUT) is the treatment of choice in case of fetal anemia, but it cannot be performed early during pregnancy. Combined treatment with therapeutic plasma-exchange (TPE) and intravenous immunoglobulin (IVIG) can avoid or delay IUT. Immunoadsorption (IA) could represent a more effective treatment in selected cases...
June 6, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28648139/mutagenic-analysis-of-an-adeno-associated-virus-variant-capable-of-simultaneously-promoting-immune-resistance-and-robust-gene-delivery
#9
Yoojin Kim, Eunmi Kim, Seokmin Oh, Ye-Eun Yoon, Jae-Hyung Jang
In addition to the ability to boost gene delivery efficiency in many therapeutically relevant cells, the capability of circumventing neutralizing antibody (NAb) inactivation is a key prerequisite that gene carriers must fulfill for their extensive applications as therapeutic agents in many gene therapy trials, especially for cancer treatments. This study revealed that a genetically engineered adeno-associated viral (AAV) variant, AAVr3.45, inherently possesses dual beneficial properties as a gene carrier: i) efficiently delivering therapeutic genes to many clinically valuable cells (e...
June 24, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28648086/lower-morbidity-and-improved-outcomes-in-patients-with-screen-detected-colorectal-cancer
#10
David Mansouri
Screening for colorectal cancer is now integrated into the fabric of healthcare systems across the world, as a wealth of evidence exists as regards its benefits in reducing cancer-specific mortality through the detection of early-stage disease. Options for screening include both endoscopic and stool-based tests, with a majority of countries opting for repeated faecal occult blood screening tests (FOBt). These can be either guaiac-based, as is the current system across the UK, or immunoglobulin-based, as is the case in the accompanying article from Spain...
June 26, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28647523/thermal-aggregation-of-human-immunoglobulin-g-in-arginine-solutions-contrasting-effects-of-stabilizers-and-destabilizers
#11
Shunsuke Yoshizawa, Tsutomu Arakawa, Kentaro Shiraki
Arginine is widely used as aggregation suppressor of proteins in biotechnology and pharmaceutics. However, why the effect of arginine depends on the types of proteins and stresses, including monoclonal antibodies, is still unclear. Here we investigated the precise processes of the thermal aggregation of human immunoglobulin G (IgG) in the presence of additives. As expected, arginine was the best additive to suppress the formation of insoluble aggregates during heat treatment, though it was unable to preserve the monomer content...
June 21, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28647518/increasing-the-accuracy-of-proteomic-typing-by-decellularisation-of-amyloid-tissue-biopsies
#12
P Patrizia Mangione, Giuseppe Mazza, Janet A Gilbertson, Nigel B Rendell, Diana Canetti, Sofia Giorgetti, Luca Frenguelli, Marco Curti, Tamer Rezk, Sara Raimondi, Mark B Pepys, Philip N Hawkins, Julian D Gillmore, Graham W Taylor, Massimo Pinzani, Vittorio Bellotti
Diagnosis and treatment of systemic amyloidosis depend on accurate identification of the specific amyloid fibril protein forming the tissue deposits. Confirmation of monoclonal immunoglobulin light chain amyloidosis (AL), requiring cytotoxic chemotherapy, and avoidance of such treatment in non-AL amyloidosis, are particularly important. Proteomic analysis characterises amyloid proteins directly. It complements immunohistochemical staining of amyloid to identify fibril proteins and gene sequencing to identify mutations in the fibril precursors...
June 21, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28646955/toxic-shock-syndrome-the-seven-rs-of-management-and-treatment
#13
Amanda L Wilkins, Andrew C Steer, Pierre R Smeesters, Nigel Curtis
Staphylococcal and streptococcal toxic shock syndrome (TSS) are associated with significant morbidity and mortality. There has been considerable progress in understanding the pathophysiology and delineating optimal management and treatment. This article reviews the management of TSS, outlining the 'Seven Rs of Managing and Treating TSS': Recognition, Resuscitation, Removal of source of infection, Rational choice of antibiotics, Role of adjunctive treatment (clindamycin and intravenous immunoglobulin), Review of progress and Reduce risk of secondary cases in close contacts...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28645246/igmk-paraprotein-from-gammopathy-patient-can-bind-to-cardiolipin-and-interfere-with-coagulation-assay-a-case-report
#14
Xin-Yao Wu, Yu-Feng Yin, Jia-Lin Teng, Li-Wei Zhang, Cheng-de Yang
BACKGROUND: The monoclonal gammopathies are a group of plasma-cell proliferative disorders characterized by the secretion of monoclonal immunoglobulin (M protein or paraprotein). Some rare cases have revealed the specific affinity of paraprotein as autoantibody. Here we report a patient with monoclonal gammopathy of undetermined significance (MGUS) accompanied by a remarkable increase of anticardiolipin antibody (aCL) and an extensively decreased coagulation factor activity, however, without any clinical signs of antiphospholipid syndrome (APS) and bleeding...
June 23, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28644735/fetal-and-neonatal-alloimmune-thrombocytopenia-evidence-based-antenatal-and-postnatal-management-strategies
#15
Dian Winkelhorst, Dick Oepkes, Enrico Lopriore
Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a relatively rare but potentially lethal disease, leading to severe bleeding complications in 1 in 11.000 newborns. It is the leading cause of thrombocytopenia in healthy term-born neonates. Areas covered: This review summarizes the antenatal as well as postnatal treatment, thus creating a complete overview of all possible management strategies for FNAIT. Expert commentary: The optimal antenatal therapy in order to prevent bleeding complications in pregnancies complicated by FNAIT is non-invasive treatment with weekly intravenous immunoglobulin (IVIG)...
June 23, 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/28644246/effects-of-exercise-on-the-immune-function-of-pediatric-patients-with-solid-tumors-insights-from-the-papec-randomized-trial
#16
Carmen Fiuza-Luces, Julio R Padilla, Jaime Valentín, Elena Santana-Sosa, Alejandro Santos-Lozano, Fabián Sanchis-Gomar, Helios Pareja-Galeano, Javier S Morales, Steven J Fleck, Margarita Pérez, Alvaro Lassaletta, Luisa Soares-Miranda, Antonio Pérez-Martínez, Alejandro Lucia
The purpose of this study was to assess the effects of an in-hospital exercise intervention during neoadjuvant chemotherapy on the inflammatory profile and immune cell subpopulation in 20 children with solid tumors (control [n = 11] and exercise group [n = 9]). Although no significant interaction (group × time) effect was found with an analysis of variance test, we found a trend toward an interaction effect for natural killer cells expressing the immunoglobulin-like receptor KIR2DS4, with their numbers remaining stable in the exercise group but increasing in controls...
June 21, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28644158/radiology-case-of-the-month-idiopathic-cd4-lymphocytopenia
#17
Chris Malone, Neel D Gupta, Amit Kothari, Enrique Palacios, Harold Neitzschman
A 39 year-old male with a history of diabetes, retinitis pigmentosa, and genital warts presented with intractable occipital headaches accompanied with nausea and vomiting. The patient had markedly depressed CD4 counts. Furthermore the patient tested negative for HIV and HTLV 1/2 and had normal immunoglobulin levels. During hospital course the patient underwent a lumbar puncture and multiple imaging exams, including both CT and MR. Except for occasional nausea and vomiting controlled by therapeutic lumbar punctures, phenergan, and dilaudid the patient's hospital course was uncomplicated...
May 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28643451/polyclonal-and-monoclonal-b-lymphocytes-response-in-hcv-patients-treated-with-direct-acting-antiviral-agents
#18
Alvise Schiavinato, Alberto Zanetto, Giorgia Pantano, Francesca Tosato, Mitja Nabergoj, Paola Fogar, Elisa Piva, Martina Gambato, Enrica Franceschet, Annarosa Floreani, Fabio Farinati, Patrizia Burra, Francesco Paolo Russo, Mario Plebani
Hepatitis C Virus (HCV) chronic infection can be associated with extrahepatic manifestations such as mixed cryoglobulinemia and lymphoproliferative disorders that are endowed with increased rates of morbidity and all-cause mortality. In this study we used flow cytometry to evaluate the effect of Interferon-free antiviral treatment on peripheral blood lymphocytes in HCV patients with or without associated lymphoproliferative disorders. Flow cytometry analysis of peripheral blood lymphocytes were performed at baseline and at the end of treatment...
June 22, 2017: Journal of Viral Hepatitis
https://www.readbyqxmd.com/read/28643294/-saccharomyces-boulardii-cncm-i-745-influences-the-gut-associated-immune-system
#19
Heike Stier, Stephan C Bischoff
BACKGROUND: The impact of the intestinal microbiome is increasing steadily with regard to the immune function und the defense against pathogens. The medicinal yeast Saccharomyces boulardii CNCM I-745 (S. boulardii) has been used as probiotic for the prevention and treatment of infectious diarrhea since more than 50 years. Meta-analyses confirm the clinical efficacy of S. boulardii to treat diarrhea of various origins in children and adults. METHOD: This review article summarizes experimental studies on molecular and immunological mechanisms which explain the proven clinical efficacy of S...
June 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/28643274/an-unexplained-congenital-disorder-of-glycosylation-ii-in-a-child-with-neurohepatic-involvement-hypercholesterolemia-and-hypoceruloplasminemia
#20
Pier Luigi Calvo, Marco Spada, Ivana Rabbone, Michele Pinon, Francesco Porta, Fabio Cisarò, Stefania Reggiani, Angelo B Cefalù, Luisella Sturiale, Domenico Garozzo, Dirk J Lefeber, Jaak Jaeken
We report on a 12-year-old adopted boy with psychomotor disability, absence seizures, and normal brain MRI. He showed increased (but initially, at 5 months, normal) serum cholesterol, increased alkaline phosphatases, transiently increased transaminases and hypoceruloplasminemia with normal serum and urinary copper. Blood levels of immunoglobulins, haptoglobin, antithrombin, and factor XI were normal. A type 2 serum transferrin isoelectrofocusing and hypoglycosylation of apoCIII pointed to a combined N- and O-glycosylation defect...
June 23, 2017: JIMD Reports
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