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https://www.readbyqxmd.com/read/28821452/pinocembrin-a-novel-histidine-decarboxylase-inhibitor-with-anti-allergic-potential-in-in-vitro
#1
Hamza Hanieh, Villianur Ibrahim Hairul Islam, Subramanian Saravanan, Muthiah Chellappandian, Kessavane Ragul, Arumugam Durga, Kaliyamoorthy Venugopal, Venugopal Senthilkumar, Palanisamy Senthilkumar, Krishnaraj Thirugnanasambantham
Pinocembrin (5, 7- dihydroxy flavanone) is the most abundant chiral flavonoid found in propolis, exhibiting antioxidant, antimicrobial and anti-inflammatory properties. However, the effect of Pinocembrin on allergic response is unexplored. Thus, current study aimed at investigating the effects of Pinocembrin on IgE-mediated allergic response in vitro. A special emphasis was directed toward histidine decarboxylase (HDC) and other pro-allergic and pro-inflammatory mediators. Preliminary studies, using a microbiological model of Klebsiella pneumoniae, provided first evidences that suggest Pinocembrin as a potential thermal stable inhibitor for HDC...
August 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28818650/recombinant-vs-native-anisakis-haemoglobin-ani-s-13-its-appraisal-as-a-new-gold-standard-for-the-diagnosis-of-allergy
#2
Juan González-Fernández, Luis Rivas, Juan Román Luque-Ortega, Rafael Núñez-Ramírez, Pamela Campioli, Teresa Gárate, María J Perteguer, Alvaro Daschner, Carmen Cuéllar
Recombinant allergens are currently the best option for serodiagnosis of human anisakiasis in terms of sensitivity and specificity. However, previous reports showed high rates of anisakiasis patients who were negative to Ani s 7 and especially to Ani s 1. Recently, Anisakis haemoglobin was described as a major allergen (Ani s 13). Although Ani s 13 belongs to a conserved protein family, it seems not to be a cross-reacting antigen because of the absence of IgE recognition against Ascaris haemoglobin in Anisakis patients...
August 14, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28818076/extensive-protein-hydrolyzation-is-indispensable-to-prevent-ige-mediated-poultry-allergen-recognition-in-dogs-and-cats
#3
Thierry Olivry, Jennifer Bexley, Isabelle Mougeot
BACKGROUND: The central premise for the commercialization of diets with hydrolyzed ingredients is that the small-sized digested peptides would be unable to crosslink allergen-specific IgE at the surface of tissue mast cells and induce their degranulation. Evidence for the validity of this concept to diagnose food allergies in dogs and cats is limited, however. Our objectives were to study the recognition of standard and variably hydrolyzed poultry extracts by sera from dogs and cats with elevated chicken-specific serum IgE...
August 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28811248/development-of-an-elisa-for-the-diagnosis-of-reactive-ige-antibodies-anti-therapeutic-horse-sera
#4
Salvatore Giovanni De-Simone, Andre Luis Almeida Souza, Aniesse Silva Aguiar, Anibal Raphel Melgarejo, David William Provance-Jr
Hypersensitive diseases that involve IgE reactivity are important concern of public, especially those encompassing the potential pathogenesis from the administration of horse serum-based therapeutics such as antivenoms. A method for the definitive diagnosis of reactive IgE is important for identifying allergic patients to control severe collateral effects during planned and emergency application of immunotherapies when the allergy source cannot be avoided for treatment. To date, no tests have been developed to accompany the wide range of antivenoms produced from horse sera...
August 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28810518/ameliorative-effects-of-artemisia-pallens-in-a-murine-model-of-ovalbumin-induced-allergic-asthma-via-modulation-of-biochemical-perturbations
#5
Anwesha A Mukherjee, Amit D Kandhare, Supada R Rojatkar, Subhash L Bodhankar
INTRODUCTION: Asthma is a chronic, heterogeneous airway disorder characterized by airway inflammatory and remodeling. Artemisia pallens has been reported to possess antioxidant, anti-inflammatory and Anti-allergic potential. OBJECTIVE: To evaluate the anti-asthmatic effects of methanolic extract of Artemisia pallens (APME) against ovalbumin (OVA)-induced airway hyperresponsiveness (AHR) in rats. MATERIALS AND METHOD: AHR was induced in male Sprague-Dawley rats (180-200g) by intraperitoneal (i...
August 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28802100/influence-of-il-6-il-33-and-tnf-%C3%AE-on-human-mast-cell-activation-lessons-from-single-cell-analysis-by-flow-cytometry
#6
Nathalie Cop, Didier G Ebo, Chris H Bridts, Jessy Elst, Margo M Hagendorens, Christel Mertens, Margaretha A Faber, Luc S De Clerck, Vito Sabato
BACKGROUND: Mechanisms that govern priming and degranulation of human mast cells (MCs) remain elusive. Besides, most of our knowledge is based on experiments from which data only reflect an average of all stimulated cells. This study aims at investigating the effects of proinflammatory cytokines IL-6, IL-33, and TNF-α on IgE-dependent and IgE-independent activation of individual MCs. METHODS: MCs were derived from CD34(+) progenitors isolated from 50 mL whole blood from 4 healthy controls and 5 birch pollen allergic patients...
August 12, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28802075/overcoming-severe-adverse-reactions-to-venom-immunotherapy-by-using-anti-ige-antibodies-in-combination-with-a-high-maintenance-dose
#7
Eva Stretz, Eva Maria Oppel, Räwer Helen-Caroline, René Chatelain, Sebastian Mastnik, Bernhard Przybilla, Franziska Ruëff
BACKGROUND: An omalizumab treatment and a high maintenance venom dose may both help to prevent recurrent systemic allergic reactions (SAR) to venom immunotherapy (VIT). The effectiveness of this combination therapy, however, is unclear. OBJECTIVE: We wanted to explore the possibility whether a temporary treatment with the anti-IgE antibody omalizumab, combined with a VIT using an elevated maintenance dose of >100 μg venom may establish a permanent tolerance of maintenance VIT...
August 12, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28795218/atopy-and-prostate-cancer-is-there-a-link-between-circulating-levels-of-ige-and-psa-in-humans
#8
Mieke Van Hemelrijck, Sophia N Karagiannis, Sabine Rohrmann
BACKGROUND: Atopy has been investigated as a potential risk factor for prostate cancer. IgE antibodies may be major players in protective responses against tumours, through engendering antigen presentation and enhancing adaptive immune responses targeted towards a specific allergen, but potentially also against tumour-associated antigens such as prostate-specific antigen (PSA). We therefore cross-sectionally investigated associations between circulating levels of PSA and IgE in the National Health and Nutrition Examination Survey 2005-2006...
August 9, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28794269/the-fc%C3%AE%C2%B5ri-signaling-cascade-and-integrin-trafficking-converge-at-patterned-ligand-surfaces
#9
Devin L Wakefield, David Holowka, Barbara Baird
We examined the spatial targeting of early and downstream signaling mediated by the IgE receptor (FcεRI) in RBL mast cells utilizing surface-patterned 2,4 dinitrophenyl (DNP) ligands. Micron-sized features of DNP are presented as densely immobilized conjugates of bovine serum albumin (DNP-BSA) or mobile in a supported lipid bilayer (DNP-SLB). Although soluble anti-DNP IgE binds uniformly across features for both pattern types, IgE bound to FcεRI on cells shows distinctive distributions: uniform for DNP-SLB and edge-concentrated for DNP-BSA...
August 9, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28791259/toxoplasma-co-infection-prevents-th2-differentiation-and-leads-to-a-helminth-specific-th1-response
#10
Norus Ahmed, Timothy French, Sebastian Rausch, Anja Kühl, Katrin Hemminger, Ildiko R Dunay, Svenja Steinfelder, Susanne Hartmann
Nematode infections, in particular gastrointestinal nematodes, are widespread and co-infections with other parasites and pathogens are frequently encountered in humans and animals. To decipher the immunological effects of a widespread protozoan infection on the anti-helminth immune response we studied a co-infection with the enteric nematode Heligmosomoides polygyrus in mice previously infected with Toxoplasma gondii. Protective immune responses against nematodes are dependent on parasite-specific Th2 responses associated with IL-4, IL-5, IL-13, IgE, and IgG1 antibodies...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28782296/combining-anti-ige-with-oral-immunotherapy
#11
REVIEW
Chunrong Lin, Ivan T Lee, Vanitha Sampath, Chitra Dinakar, Rosemarie H DeKruyff, Lynda C Schneider, Kari C Nadeau
Food allergy is a significant medical problem that affects up to 8% of children in developed countries. At present, there are no curative therapies available in routine practice and management of food allergy involves strict allergen avoidance, education, and prompt treatment upon accidental exposure. Oral immunotherapy (OIT) is an efficacious experimental approach to food allergy and has been shown to provide a substantial benefit in terms of allergen desensitization. However, OIT is associated with high rates of allergic reactions, and the period of protection offered by OIT appears to be limited and highly variable...
August 7, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28775294/anti-allergic-activity-of-glycyrrhizic-acid-on-ige-mediated-allergic-reaction-by-regulation-of-allergy-related-immune-cells
#12
Shiwen Han, Lu Sun, Feng He, Huilian Che
Glycyrrhizic acid (GA), the major bioactive triterpene glycoside of glycyrrhiza, has been shown to possess a wide range of pharmacological properties, including anti-inflammatory and anti-viral properties. However, few studies have examined the anti-allergic activity and exact mechanism of action of GA. In the present work, the anti-allergic activity and possible mechanisms of action of GA on an immunoglobulin (Ig) E-mediated allergic reaction has been studied using three models of allergic reaction in vivo and in vitro...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28774951/human-lactoferrin-induces-asthmatic-symptoms-in-nc-nga-mice
#13
Kenjiro Nagaoka, Tatsuo Ito, Keiki Ogino, Eri Eguchi, Yoshihisa Fujikura
Lactoferrin in commercial supplements is known to exert anti-viral and anti-allergic effects. However, this is the first study to evaluate the induction of allergic airway inflammation in NC/Nga mice. Human lactoferrin was administered intraperitoneally with aluminum oxide for sensitization. Five days later, lactoferrin was inoculated intranasally for 5 days, and then on the 12th day, the single inoculation of lactoferrin intranasally was performed as a challenge. On the 13th day, airway hypersensitivity was assessed (AHR), a bronchoalveolar fluid (BALF) cell analysis was conducted, serum IgE and serum lactoferrin-specific IgG and IgE levels as well as the mRNA expression levels of cytokines and chemokines in the lung were measured, and a histopathological analysis of the lung was performed...
August 2017: Physiological Reports
https://www.readbyqxmd.com/read/28763192/enhancing-the-affinity-of-anti-human-%C3%AE-thrombin-15-mer-dna-aptamer-and-anti-immunoglobulin-e-aptamer-by-polyt-extension
#14
Yunlong Bai, Yapiao Li, Dapeng Zhang, Hailin Wang, Qiang Zhao
Aptamer affinity capillary electrophoresis-laser-induced fluorescence (CE-LIF) for protein detection takes advantage of aptamers for their ease of synthesis and labeling, small size, and having many negative charges. Its success relies on the high binding affinity of aptamers. One 15-mer DNA aptamer (5'-GGT TGG TGT GGT TGG-3', Apt15) shows desirable specificity for human α-thrombin, an important enzyme with multiple functions in blood. However, Apt15 has weak binding affinity, and the use of Apt15 in affinity CE-LIF analysis remains challenging...
August 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28752717/justification-for-ige-as-a-therapeutic-target-in-chronic-spontaneous-urticaria
#15
M Sánchez-Borges, A Capriles-Hulet, F Caballero-Fonseca, L González-Aveledo
Monoclonal anti-IgE antibodies (omalizumab) are able to induce clinically significant benefits in patients with severe chronic spontaneous urticaria (CS). Those results led clinicians and investigators to reconsider a possible pathogenic role not previously supported for IgE and its receptors in this disease, and to investigate additional approaches for understanding its pathogenesis. IgE antibodies to unknown environmental allergens able to trigger chronic urticaria are not generally regarded as the etiologic factor for the disease...
July 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28751921/evaluation-of-anti-inflammatory-activities-of-qingre-qushi-recipe-qrqs-against-atopic-dermatitis-potential-mechanism-of-inhibition-of-il-33-st2-signal-transduction
#16
Mengjiao Chen, Peijun Ding, Lili Yang, Xufeng He, Chunjie Gao, Guoxun Yang, Huimin Zhang
To evaluate the anti-inflammatory activities of QRQS against AD and the inhibitory molecular mechanisms of IL-33/ST2 signal transduction, BALB/c mice were divided into six groups (normal control, OVA control, low-dose of QRQS, middle-dose of QRQS, high-dose of QRQS, and cetirizine) and epicutaneously exposed to ovalbumin or PBS for 3 weeks and treated with QRQS for 2 weeks. Skin biopsies and blood samples were obtained for histological study, antibody analysis, and RNA isolation. HaCaT cells, stimulated by TNF-α and IFN-γ, were treated with QRQS to evaluate mRNA and protein expression by RT-PCR and ELISA...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28751232/omalizumab-treatment-in-chronic-inducible-urticaria-a-systematic-review-of-published-evidence
#17
Marcus Maurer, Martin Metz, Randolf Brehler, Uwe Hillen, Thilo Jakob, Vera Mahler, Claudia Pföhler, Petra Staubach, Regina Treudler, Bettina Wedi, Markus Magerl
BACKGROUND: Omalizumab, a recombinant anti-IgE antibody, effectively treats chronic spontaneous urticaria. Evidence is lacking in chronic inducible urticarias (CIndUs), which are frequently H1-antihistamine resistant. OBJECTIVE: We aimed to determine, from the current published literature, the strength of evidence for omalizumab efficacy and safety in the treatment of CIndUs. METHODS: We performed a PubMed® search to identify evidence on omalizumab use in the following nine CIndU subtypes: symptomatic dermographism, cold urticaria, delayed pressure urticaria, solar urticaria, heat urticaria, vibratory angioedema, cholinergic urticaria, contact urticaria and aquagenic urticaria...
July 24, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28748365/urticaria-and-angioedema-an-update-on-classification-and-pathogenesis
#18
REVIEW
Susanne Radonjic-Hoesli, Kathrin Scherer Hofmeier, Sara Micaletto, Peter Schmid-Grendelmeier, Andreas Bircher, Dagmar Simon
Urticaria is a common, mast cell-driven disease presenting with wheals or angioedema or both. In the last years, urticaria has increasingly attracted notice to clinicians and researchers, last but not least inspired by the approval of omalizumab, an anti-IgE antibody, for urticaria treatment. There is wide consensus on the clinical classification based on duration and elicitation. However, the pathogenesis is incompletely understood. This review summarizes current guidelines for the management and novel insights in the pathogenesis of urticaria with special focus on their impact on clinical praxis...
July 26, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28746467/tangeretin-has-anti-asthmatic-effects-via-regulating-pi3k-and-notch-signaling-and-modulating-th1-th2-th17-cytokine-balance-in-neonatal-asthmatic-mice
#19
L-L Liu, F-H Li, Y Zhang, X-F Zhang, J Yang
Asthma is a chronic allergic disease characterized by airway inflammation, airway hyper-responsiveness (AHR), and mucus hypersecretion. T-lymphocytes are involved in the pathogenesis of asthma, mediating airway inflammatory reactions by secreting cytokines. The phosphoinositide 3-kinase (PI3K) and Notch signaling pathways are associated with T cell signaling, proliferation, and differentiation, and are important in the progression of asthma. Thus, compounds that can modulate T cell proliferation and function may be of clinical value...
July 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28742098/pathological-manifestations-in-lymphatic-filariasis-correlate-with-lack-of-inhibitory-properties-of-igg4-antibodies-on-ige-activated-granulocytes
#20
Ulrich F Prodjinotho, Charlotte von Horn, Alex Y Debrah, Linda Batsa Debrah, Anna Albers, Laura E Layland, Achim Hoerauf, Tomabu Adjobimey
Helminth parasites are known to be efficient modulators of their host's immune system. To guarantee their own survival, they induce alongside the classical Th2 a strong regulatory response with high levels of anti-inflammatory cytokines and elevated plasma levels of IgG4. This particular antibody was shown in different models to exhibit immunosuppressive properties. How IgG4 affects the etiopathology of lymphatic filariasis (LF) is however not well characterized. Here we investigate the impact of plasma and affinity-purified IgG/IgG4 fractions from endemic normals (EN) and LF infected pathology patients (CP), asymptomatic microfilaraemic (Mf+) and amicrofilaraemic (Mf-) individuals on IgE/IL3 activated granulocytes...
July 2017: PLoS Neglected Tropical Diseases
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