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Immunoglobulins

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https://www.readbyqxmd.com/read/29792706/adaptable-detection-strategies-in-membrane-based-immunoassays-calibration-free-quantitation-with-surface-enhanced-raman-scattering-readout
#1
Aleksander Skuratovsky, Robert J Soto, Marc D Porter
This paper presents a method for immunometric biomarker quantitation that uses standard flow-through assay reagents and obviates the need for constructing a calibration curve. The approach relies on a nitrocellulose immunoassay substrate with multiple physical addresses for analyte capture, each modified with different amounts of an analyte-specific capture antibody. As such, each address generates a distinctly different readout signal that is proportional to the analyte concentration in the sample. To establish the feasibility of this concept, equations derived from antibody-antigen binding equilibrium were first applied in modeling experiments...
May 24, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29792546/application-of-a-mixture-model-to-assess-the-effect-of-measles-mumps-rubella-vaccine-on-the-mumps-epidemic-in-children-from-kindergarten-to-early-school-age-in-jiangsu-province-china
#2
Lei Zhang, Zhiguo Wang, Ying Hu, Xiuying Deng, Hongxiong Guo, Xiang Sun, Fenyang Tang, Minghao Zhou, Yuanbao Liu
A single dose of the measles-mumps-rubella (MMR) vaccine has been applied in routine immunizations for children in China; however, the Immunoglobulin G (IgG) antibody level of mumps in children from kindergarten to early school age with MMR vaccine immunization history has not been elucidated. This study aimed to describe the immunity profile of children from kindergarten to early school age to identify the susceptible population. In Jiangsu Province, a cross-sectional survey of 4- to 8-year-old children who were vaccinated with at least one dose of MMR vaccine was conducted...
May 24, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29792179/hopkins-syndrome-following-the-first-episode-of-bronchial-asthma-associated-with-enterovirus-d68-a-case-report
#3
Fumie Hayashi, Shintaro Hayashi, Dai Matsuse, Ryo Yamasaki, Keiji Yonekura, Jun-Ichi Kira
BACKGROUND: Hopkins syndrome (HS) is a rare disorder presenting with acute flaccid paralysis of the limbs following an asthma attack. Neurologists encounter a diagnostic challenge if patients without a history of bronchial asthma develop neurologic features mimicking HS following acute respiratory distress. We report a case of HS occurring after a first episode of bronchial asthma associated with enterovirus D68 infection. CASE PRESENTATION: A 5-year-old girl developed acute respiratory distress...
May 23, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29792176/anti-neutrophil-cytoplasmic-antibody-associated-glomerulonephritis-with-detection-of-myeloperoxidase-and-phospholipase-a-2-receptor-in-membranous-nephropathy-lesions-report-of-two-patients-with-microscopic-polyangiitis
#4
Kenta Tominaga, Takahiro Uchida, Toshihiko Imakiire, Kenji Itoh, Hideyuki Shimazaki, Kuniaki Nakanishi, Hiroo Kumagai, Naoki Oshima
BACKGROUND: Podocyte phospholipase A2 receptor (PLA2 R) is a major target antigen in idiopathic adult membranous nephropathy (MN). Histological PLA2 R staining in the renal tissue has proven to be useful for the detection of idiopathic MN. However, glomerular PLA2 R deposits have also been recently observed in several patients with secondary MN, such as hepatitis B virus-associated, hepatitis C virus-associated, and neoplasm-associated MN. Certain inflammatory environments have been suggested to lead to abnormal expression of PLA2 R epitopes, with the resulting production of PLA2 R autoantibodies...
May 23, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29792124/hypersensitivity-to-alemtuzumab-a-safe-and-effective-desensitization-protocol-a-case-report
#5
Diego Gutiérrez-Fernández, Mónica Saldaña-Valderas, Raquel de la Varga-Martínez, Antonio Foncubierta-Fernández, María J Fernández-Anguita, Maria Del C Fernández-Valle, Fermín Medina-Varo
We describe a successful desensitization to alemtuzumab in one patient diagnosed with T-cell prolymphocytic leukaemia. Alemtuzumab treatment was initiated during infusion number 18, the patient showed cutaneous eruption with a miliary pattern, despite premedication with corticosteroids and antihistamines. The eruption returned with successive alemtuzumab infusions (infusions 19, 20 and 21), remained present for longer and was more severe with each infusion. The patient was referred to our Allergy Unit as it was necessary to maintain alemtuzumab treatment...
January 1, 2018: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29791846/myosin-iia-promotes-antibody-responses-by-regulating-b-cell-activation-acquisition-of-antigen-and-proliferation
#6
Robbert Hoogeboom, Elizabeth M Natkanski, Carla R Nowosad, Dessislava Malinova, Rajesh P Menon, Antonio Casal, Pavel Tolar
B cell responses are regulated by antigen acquisition, processing, and presentation to helper T cells. These functions are thought to depend on contractile activity of non-muscle myosin IIa. Here, we show that B cell-specific deletion of the myosin IIa heavy chain reduced the numbers of bone marrow B cell precursors and splenic marginal zone, peritoneal B1b, and germinal center B cells. In addition, myosin IIa-deficient follicular B cells acquired an activated phenotype and were less efficient in chemokinesis and extraction of membrane-presented antigens...
May 22, 2018: Cell Reports
https://www.readbyqxmd.com/read/29790193/myasthenic-ophthalmoparesis-time-to-resolution-after-initiating-immune-therapies
#7
T A Europa, M Nel, J M Heckmann
INTRODUCTION: Although immunotherapies such as prednisone are effective in treating myasthenic muscle weakness, their effect on resolution of myasthenic-induced persistent ophthalmoparesis is unknown. METHODS: We observed myasthenia gravis patients during their first year of immunotherapy, documenting ophthalmoplegia scores and drug doses. RESULTS: Seventy-six of 87 cases had persistent ophthalmoparesis. On immunotherapy, the median time to resolution of ophthalmoparesis was 7 months and 37% resolved within 3 months...
May 23, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29790189/the-identification-of-a-novel-antibody-for-cd133-using-human-antibody-phage-display
#8
Paige M Glumac, Colleen L Forster, Hong Zhou, Paari Murugan, Shilpa Gupta, Aaron M LeBeau
BACKGROUND: The transmembrane glycoprotein CD133 is believed to be a marker of adult prostate stem cells and cancer stem/initiating cells. Investigating the role of CD133 in the normal biology of the prostate and in cancer is complicated by the lack of a sensitive and accurate antibody for its detection. Here, we describe the characterization of a unique antibody identified using human antibody phage display that can recognize CD133 in both formalin-fixed tissues and cell lines. METHODS: A human single-chain variable fragment (scFv) antibody phage display library possessing a diversity of 8 × 109 was screened against fully glycosylated recombinant CD133...
May 22, 2018: Prostate
https://www.readbyqxmd.com/read/29790165/igg1-b-cell-immunity-predates-ige-responses-in-epicutaneous-sensitization-to-foods
#9
Rodrigo Jiménez-Saiz, Yosef Ellenbogen, Joshua Koenig, Melissa E Gordon, Tina D Walker, Domenico Rosace, Paul Spill, Kelly Bruton, Joshua Kong, Kristin Monteiro, Jianping Wen, Elaine I Tuomanen, Roland Kolbeck, Derek K Chu, Susan Waserman, Manel Jordana
BACKGROUND: The generation of IgE-mediated food allergy in humans is silent, and only diagnosed upon manifestation of clinical symptoms. While experimental models have been used to investigate some mechanisms of allergic sensitization, the generation of humoral immunity and memory remain to be elucidated. Here, we defined the evolution of allergen-specific B cell responses during epicutaneous sensitization to foods. METHODS: Wild-type and genetic knockout animals, and drug or antibody strategies for cell depletion and immunoglobulin signaling blockade were used to investigate epicutaneous sensitization and disease progression; we analyzed allergen-specific germinal centers and IgG1+ memory B cells by flow cytometry, evaluated humoral responses and determined clinical reactivity (anaphylaxis)...
May 22, 2018: Allergy
https://www.readbyqxmd.com/read/29790090/enhancement-of-broodstock-health-and-maternal-immunity-in-gilthead-seabream-sparus-aurata-l-using-excelmos%C3%A2
#10
N M AbouShabana, R AbdelKader, S Abdel-Rahman, H S Abdel-Gawad, A M Abdel-Galil
The current study was conducted to investigate the effect of ExcelMOS® in enhancing the immune system of Sparus aurata broodstock and their impact on offspring health through displaying the maternal transfer of immunity. Broodstock were divided into two groups: one was injected intraperitoneally with ExcelMOS® 1 month before spawning, while the other group was used as a control (without injection). Comprehensive increase in survival rate was observed for larvae hatched from ExcelMOS®-injected broodstock than those of the control (P ≤ 0...
May 22, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29789438/integrin-%C3%AE-4%C3%AE-7-switches-its-ligand-specificity-via-distinct-conformer-specific-activation
#11
ShiHui Wang, ChenYu Wu, YueBin Zhang, QingLu Zhong, Hao Sun, WenPeng Cao, GaoXiang Ge, GuoHui Li, X Frank Zhang, JianFeng Chen
Chemokine (C-C motif) ligand 25 (CCL25) and C-X-C motif chemokine 10 (CXCL10) induce the ligand-specific activation of integrin α4β7 to mediate the selective adhesion of lymphocytes to mucosal vascular addressin cell adhesion molecule-1 (MAdCAM-1) or vascular cell adhesion molecule-1 (VCAM-1). However, the mechanism underlying the selective binding of different ligands by α4β7 remains obscure. In this study, we demonstrate that CCL25 and CXCL10 induce distinct active conformers of α4β7 with a high affinity for either MAdCAM-1 or VCAM-1...
May 22, 2018: Journal of Cell Biology
https://www.readbyqxmd.com/read/29788397/polyspecific-intravenous-immunoglobulin-in-clindamycin-treated-patients-with-streptococcal-toxic-shock-syndrome-a-systematic-review-and-meta-analysis
#12
Tom Parks, Clare Wilson, Nigel Curtis, Anna Norrby-Teglund, Shiranee Sriskandan
We evaluated the effect of adjunctive intravenous immunoglobulin (IVIG) on mortality in clindamycin-treated streptococcal toxic shock syndrome patients using a meta-analysis. In association with IVIG, mortality fell from 33.7% to 15.7% (risk ratio 0.46, 95% confidence intervals 0.26-0.83, p=0.010) with remarkable consistency across the single randomised and four non-randomised studies.
May 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29788338/clinical-pharmacology-in-adult-and-pediatric-inflammatory-bowel-disease
#13
Amy Hemperly, William J Sandborn, Niels Vande Casteele
This review describes the clinical pharmacology of the major drugs used for the treatment of patients with inflammatory bowel disease (IBD). Pharmacokinetics, drug metabolism, mechanism of action, efficacy, and safety profile are discussed. Some small molecules were developed to act systemically (eg, ozanimod) or locally (eg, aminosalicylates) and thus have disparate pharmacokinetic properties. In addition, locally acting compounds have been optimized to mitigate systemic exposure-eg, budesonide, which undergoes extensive first-pass metabolism-thereby reducing systemic bioavailability and side effects...
May 17, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29788288/food-exclusion-based-on-igg-antibodies-alleviates-symptoms-in-ulcerative-colitis-a-prospective-study
#14
Liu Jian, He Anqi, Liu Gang, Wang Litian, Xu Yanyan, Wang Mengdi, Liu Tong
Background: Most patients with ulcerative colitis (UC) rely predominantly on medication for disease control. Diet interventions can reduce pharmaceutical expenditures and prolong remission. We designed a prospective study to evaluate whether an immunoglobulin G (IgG)-guided exclusion diet would improve symptoms and quality of life (QoL) in patients with UC. Methods: The 6-month diet intervention included 97 patients with UC, who were randomly divided into an intervention group (n = 49) and a control (n = 48) group...
May 16, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29788004/juvenile-traumatic-brain-injury-results-in-cognitive-deficits-associated-with-impaired-endoplasmic-reticulum-stress-and-early-tauopathy
#15
Michael J Hylin, Ryan C Holden, Aidan C Smith, Aric F Logsdon, Rabia Qaiser, Brandon P Lucke-Wold
The leading cause of death in the juvenile population is trauma, and in particular neurotrauma. The juvenile brain response to neurotrauma is not completely understood. Endoplasmic reticulum (ER) stress has been shown to contribute to injury expansion and behavioral deficits in adult rodents and furthermore has been seen in adult postmortem human brains diagnosed with chronic traumatic encephalopathy. Whether endoplasmic reticulum stress is increased in juveniles with traumatic brain injury (TBI) is poorly delineated...
May 22, 2018: Developmental Neuroscience
https://www.readbyqxmd.com/read/29787795/anti-allergy-and-anti-tussive-activity-of-clitoria-ternatea-l-in-experimental-animals
#16
Niraj Kumar Singh, Debapriya Garabadu, Priyanka Sharma, Sushant Kumar Shrivastava, Pradeep Mishra
ETHNOPHARMACOLOGICAL RELEVANCE: Clitoria ternatea flower is traditionally used in the treatment of respiratory disorders including bronchitis and is one of the ingredients in different Ayurvedic preparations that are used in respiratory disorders. However, till date there is no scientific report on the anti-asthmatic activity of this flower. AIM OF THE STUDY: Ethanolic extract of Clitoria ternatea flowers (ECT) was evaluated for its anti-allergy and anti-tussive potential in experimental animals...
May 19, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29787778/monoclonal-antibodies-against-loggerhead-sea-turtle-caretta-caretta-igy-isoforms-reveal-differential-contributions-to-antibody-titers-and-relatedness-among-other-sea-turtles
#17
Maria L Rodgers, Charles D Rice
Serum from loggerhead sea turtles, Caretta caretta, was collected from the southeast Atlantic Ocean during routine summer monitoring studies in 2017. Serum immunoglobulin IgY was purified and used to develop IgY isoform-specific monoclonal antibodies (mAb). mAb LH12 was developed against the 66 kDa heavy chain of IgY, mAb LH1 was developed against the truncated heavy chain of approximately 37 kDA, and mAb LH9 was developed against the 23 kDa light chains. mAb LH9 reacts with the light chains of all sea turtles, mAb LH12 reacts with the long heavy chain of all sea turtles within the family Cheloniidae, and mAb LH1 reacts with the truncated form of IgY in both olive and Kemp's ridley turtles...
May 19, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29787436/immunological-markers-of-chronic-occupational-radiation-exposure
#18
Valentina L Rybkina, Maria V Bannikova, Galina V Adamova, Harald Dörr, Harry Scherthan, Tamara V Azizova
This study aimed to identify immunological biomarkers for prolonged occupational radiation exposure and thus studied a random sample of the Mayak Production Association worker cohort (91 individuals). The control group included 43 local individuals never employed at the Mayak Production Association. To identify biomarkers, two groups of workers were formed: the first one included workers chronically exposed to external gamma rays at cumulative doses of 0.5-3.0 Gy (14 individuals); the second one included workers exposed to combined radiation-external gamma rays at doses ranging from 0...
July 2018: Health Physics
https://www.readbyqxmd.com/read/29786568/nutritive-support-for-newborns-in-critical-conditions-semi-elemental-formilas-as-a-means-of-enteral-nutrition
#19
Dmytro Shkurupii
OBJECTIVE: Introduction: The goal is to increase the efficiency of nutritional support in intensive care of newborns by substantiating the choice of the enteral blend. PATIENTS AND METHODS: Materials and methods: A prospective cohort study was conducted, which included 173 newborns. The main group consisted of 143 patients of intensive care units. The comparison group - 30 virtually healthy newborns. Physical parameters, changes in protein metabolism, serum immunoglobulins, functioning of the gastrointestinal tract and hepatobiliary system in the development of critical conditions and depending on the type of enteric urine formula were determined...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29786518/evaluation-of-serum-ige-in-peach-allergic-patients-with-systemic-reaction-by-using-recombinant-pru-p-7-gibberellin-regulated-protein
#20
Y Mori, F Okazaki, C Inuo, Y Yamaguchi, S Masuda, S Sugiura, T Fukuie, M Nagao, I Tsuge, T Yosikawa, A Yagami, K Matsunaga, T Fujisawa, K Ito, H Narita, Y Kondo
BACKGROUND: Lipid transfer protein (LTP) is a major fruit allergen. It has, however, recently been revealed that the systemic reaction in peach-allergic patients is related not only to LTP (Pru p 3) but also to gibberellin-regulated protein (Pru p 7). We investigated recombinant Pru p 7 (rPru p 7) for its potential use in worldwide standardization for the diagnosis of peach allergy. METHODS: Natural Pru p 7 (nPru p 7) was purified from peach crude extract using a monoclonal antibody affinity column...
May 18, 2018: Allergologia et Immunopathologia
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