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https://www.readbyqxmd.com/read/29221713/effect-of-grass-sublingual-tablet-immunotherapy-is-similar-in-children-and-adults-a-bayesian-approach-to-design-pediatric-sublingual-immunotherapy-trials
#1
Amarjot Kaur, David Skoner, Joseph Ibrahim, Qing Li, Richard F Lockey, Michael Blaiss, Albrecht Bufe, Jens Strodl Andersen, Giorgio Walter Canonica, Hendrik Nolte
BACKGROUND: Large sample sizes are needed for sublingual immunotherapy (SLIT) trials due to inherent data variability secondary to inconsistent allergen exposure. Obtaining large sample sizes for pediatric SLIT trials is challenging, but a Bayesian approach using prior adult data can reduce the necessary sample size. OBJECTIVE: To describe how a Bayesian framework utilizing prior information from adult trials can be used to improve pediatric SLIT clinical development...
December 5, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29221712/modulating-allergic-response-by-engineering-the-major-parietaria-allergens
#2
Angela Bonura, Daniela Di Blasi, Bianca Barletta, Cinzia Butteroni, Silvia Corinti, Francesco Gervasi, Raphael MelisMario, Carina Uasuf, Cibella Fabio, Gabriella Di Felice, Paolo Colombo
An engineered recombinant hybrid composed of the two major Parietaria allergens (PjEDcys) with reduced allergenicity, retained immunogenicity but immunomodulatory activity for Allergen Immunotherapy of Parietaria allergic patients.
December 5, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29221580/mechanisms-of-allergen-immunotherapy-for-inhaled-allergens-and-predictive-biomarkers
#3
REVIEW
Mohamed H Shamji, Stephen R Durham
Allergen immunotherapy is effective in patients with IgE-dependent allergic rhinitis and asthma. When immunotherapy is given continuously for 3 years, there is persistent clinical benefit for several years after its discontinuation. This disease-modifying effect is both antigen-specific and antigen-driven. Clinical improvement is accompanied by decreases in numbers of effector cells in target organs, including mast cells, basophils, eosinophils, and type 2 innate lymphoid cells. Immunotherapy results in the production of blocking IgG/IgG4 antibodies that can inhibit IgE-dependent activation mediated through both high-affinity IgE receptors (FcεRI) on mast cells and basophils and low-affinity IgE receptors (FcεRII) on B cells...
December 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29214012/evidence-of-the-efficacy-and-safety-of-house-dust-mite-subcutaneous-immunotherapy-in-elderly-allergic-rhinitis-patients-a-randomized-double-blind-placebo-controlled-trial
#4
Andrzej Bożek, Krzysztof Kołodziejczyk, Renata Kozłowska, Giorgio Walter Canonica
Background: Allergen specific immunotherapy (AIT) in elderly patients is controversial, and there is still little evidence supporting the safety and efficacy of this treatment in this population. The study objective was to evaluate the safety and efficacy of AIT for house dust mite allergens in patients over 65 years of age with allergic rhinitis (AR) and a documented allergy to house dust mites. The primary endpoint was the change from baseline in the mean average adjusted symptom score (AAdSS) and the total combined rhinitis score (TCRS) difference in the least square means for the label compared to placebo...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/29205393/eaaci-guidelines-on-allergen-immunotherapy-ige-mediated-food-allergy
#5
G B Pajno, M Fernandez-Rivas, S Arasi, G Roberts, C A Akdis, M Alvaro-Lozano, K Beyer, C Bindslev-Jensen, W Burks, M Ebisawa, P Eigenmann, E Knol, K C Nadeau, L K Poulsen, R van Ree, A F Santos, G du Toit, S Dhami, U Nurmatov, Y Boloh, M Makela, L O'Mahony, N Papadopoulos, C Sackesen, I Agache, E Angier, S Halken, M Jutel, S Lau, O Pfaar, D Ryan, G Sturm, E-M Varga, R G van Wijk, A Sheikh, A Muraro
Food allergy can result in considerable morbidity, impairment of quality of life, and healthcare expenditure. There is therefore interest in novel strategies for its treatment, particularly food allergen immunotherapy (FA-AIT) through the oral (OIT), sublingual (SLIT), or epicutaneous (EPIT) routes. This Guideline, prepared by the European Academy of Allergy and Clinical Immunology (EAACI) Task Force on Allergen Immunotherapy for IgE-mediated Food Allergy, aims to provide evidence-based recommendations for active treatment of IgE-mediated food allergy with FA-AIT...
September 27, 2017: Allergy
https://www.readbyqxmd.com/read/29205109/new-treatments-for-allergy-advances-in-peptide-immunotherapy
#6
David Calzada, Selene Baos, Lucia Cremades, Blanca Olombrada Cardaba
BACKGROUND: Nowadays, allergen-specific immunotherapy (AIT) is the only treatment able to modulate the course of allergic diseases. Although it has been applied for the last 100 years, treatment with whole allergen extracts is not without its drawbacks: AIT can cause local and systemic adverse events and may produce new IgE sensitization against other allergens present in the extract. Furthermore, the lengthy treatment duration (3-5 years), frequent administration, and high cost of treatment are other disadvantages...
November 30, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29200850/enhanced-efficacy-of-sublingual-immunotherapy-by-liposome-mediated-delivery-of-allergen
#7
Have Aliu, Carola Rask, Jens Brimnes, Thomas Lars Andresen
Immunotherapy by sublingual administration of allergens provides high patient compliance and has emerged as an alternative to subcutaneous immunotherapy for the treatment of IgE-associated allergic diseases. However, sublingual immunotherapy (SLIT) can cause adverse events. Development of allergen delivery systems enabling more efficient delivery and hence lower allergen load might reduce the adverse events. In the present study, we have investigated neutral and cationic liposomes as delivery systems of ovalbumin (OVA), as a model allergen, in an OVA-induced allergic airway inflammation model...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29188033/simple-methods-to-reduce-major-allergens-ara-h-1-and-ana-o-1-2-in-peanut-and-cashew-extracts
#8
Si-Yin Chung, Christopher P Mattison, Casey C Grimm, Shawndrika Reed
Whole peanut or cashew extracts are usually used in immunotherapy. Reducing major allergen(s) in the extracts may lessen their side effects. Three methods were evaluated to reduce major allergens in peanut extracts: (1) p-aminobenzamidine; (2) magnetic agarose beads; and (3) extraction of a commercial peanut flour at pH 7, respectively. The first two methods were also used to reduce major allergens in cashew extracts. After treatments, samples were evaluated by SDS-PAGE. pABA-treated samples were also analyzed for IgE binding in western blot...
November 2017: Food Science & Nutrition
https://www.readbyqxmd.com/read/29182623/immunotherapeutic-efficacy-of-liposome-encapsulated-refined-allergen-vaccines-against-dermatophagoides-pteronyssinus-allergy
#9
Urai Chaisri, Anchalee Tungtrongchitr, Nitaya Indrawattana, Panisara Meechan, Watchara Phurttikul, Natt Tasaniyananda, Nawannaporn Saelim, Wanpen Chaicumpa, Nitat Sookrung
Allergen specific immunotherapy (AIT) can modulate the allergic response causing a long-term symptom subsidence/abolishment which leads to reduced drug use and prevention of new sensitization. AIT of house dust mite allergy (HDM) using the mite crude extract (CE) as the therapeutic agent is not only less effective than the AIT for many other allergens, but also frequently causes adverse effects during the treatment course. In this study, mouse model of Dermatophagoides pteronyssinus (Dp) allergy was invented for testing therapeutic efficacies of intranasally administered liposome (L) encapsulated vaccines made of single Dp major allergens (L-Der p 1, L-Der p 2), combined allergens (L-Der p 1 and Der p 2), and crude Dp extract (L-CE)...
2017: PloS One
https://www.readbyqxmd.com/read/29182437/immunotherapy-for-pet-allergies
#10
Tuomas Virtanen
Allergic diseases compose a serious challenge for modern societies. Their individual, medical and economical burden is large. As humans spend most of their time indoors, exposure to indoor allergens is a significant contributor to the development of allergic sensitization and respiratory allergies, such as allergic rhinoconjunctivitis and asthma. One important source of indoor allergens are pets, in particular cats and dogs. Allergens from these and other mammals spread effectively and they are encountered widely in public places...
November 28, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29178674/a-retrospective-study-of-clinical-response-predictors-in-subcutaneous-allergen-immunotherapy-with-house-dust-mites-for-allergic-rhinitis
#11
Ji Ho Lee, Su Chin Kim, Hyunna Choi, Chang Gyu Jung, Ga Young Ban, Yoo Seob Shin, Dong Ho Nahm, Hae Sim Park, Young Min Ye
PURPOSE: House dust mites (HDM) are major allergens that cause allergic rhinitis (AR). Allergen-specific subcutaneous immunotherapy (SCIT) has been shown to be clinically beneficial in many clinical trials. Such trials, however, are not reflective of all patient populations. The aim of this study was to describe the efficacy and safety of SCIT in routine clinical practice in Korean adults with AR sensitized to HDM. METHODS: We reviewed medical records of 304 patients with AR treated at an allergy clinic of a tertiary hospital using SCIT with aluminum hydroxide-adsorbed allergen extract targeting HDM alone or with pollens for at least 1 year from 2000 to 2012...
January 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29178670/efficacy-and-safety-of-subcutaneous-allergen-immunotherapy-for-allergic-rhinitis
#12
EDITORIAL
Myung Hyun Sohn
No abstract text is available yet for this article.
January 2018: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/29171882/characterization-of-epitope-specificities-of-reference-antibodies-used-for-the-quantification-of-the-birch-pollen-allergen-bet-v-1
#13
Sébastien Brier, Maxime Le Mignon, Karine Jain, Constance Lebrun, François Peurois, Christine Kellenberger, Véronique Bordas-Le Floch, Laurent Mascarell, Emmanuel Nony, Philippe Moingeon
BACKGROUND: Accurate allergen quantification is needed to document the consistency of allergen extracts used for immunotherapy. Herein, we characterize the epitope specificities of two monoclonal antibodies used in an ELISA for the quantification of the major birch pollen allergen Bet v 1, established as a reference by the BSP090 European project. METHODS: The ability of mAbs 5B4 and 6H4 to recognize Bet v 1 isoforms was addressed by immunochromatography. The capacity of each mAb to compete with patients' IgE for binding to Bet v 1 was measured by ELISA inhibition...
November 24, 2017: Allergy
https://www.readbyqxmd.com/read/29171712/perspectives-in-allergen-immunotherapy-2017-and-beyond
#14
REVIEW
O Pfaar, S Bonini, V Cardona, P Demoly, T Jakob, M Jutel, J Kleine-Tebbe, L Klimek, S Klysner, M V Kopp, P Kuna, M Larché, A Muraro, C B Schmidt-Weber, M Shamji, K Simonsen, C Somoza, E Valovirta, P Zieglmayer, T Zuberbier, U Wahn
The Future of the Allergists and Specific Immunotherapy (FASIT) workshop provides a regular platform for global experts from academia, allergy clinics, regulatory authorities and industry to review developments in the field of allergen immunotherapy (AIT). The most recent meeting, held in February 2017, had two main themes: advances in AIT and hot topics in AIT from the regulatory point of view. The first theme covered opportunities for personalised AIT, advances in adjuvants and delivery systems, and the development of new molecules and future vaccines for AIT...
November 24, 2017: Allergy
https://www.readbyqxmd.com/read/29171032/immunological-differences-between-insect-venom-allergic-patients-with-and-without-immunotherapy-and-asymptomatically-sensitized-subjects
#15
Lisa Arzt, Danijela Bokanovic, Christoph Schrautzer, Karin Laipold, Christian Möbs, Wolfgang Pfützner, Sereina Annik Herzog, Jutta Vollmann, Norbert Reider, Barbara Bohle, Werner Aberer, Gunter Sturm
BACKGROUND: Currently available tests are unable to distinguish between asymptomatic sensitization and clinically relevant Hymenoptera venom allergy. A reliable serological marker to monitor venom immunotherapy (VIT) does also not exist. Our aim was to find reliable serological markers to predict tolerance to bee and vespid stings. METHODS: We included 77 asymptomatically-sensitized subjects, 85 allergic-patients with acute systemic sting reactions, and 61 allergic-patients currently treated with VIT...
November 23, 2017: Allergy
https://www.readbyqxmd.com/read/29168570/specific-immunotherapy-in-lar-a-randomized-double-blind-placebo-controlled-trial-with-phleum-pratense-subcutaneous-allergen-immunotherapy
#16
Carmen Rondón, Natalia Blanca-López, Paloma Campo, Cristobalina Mayorga, Raquel Jurado-Escobar, Maria J Torres, Gabriela Canto, Miguel Blanca
BACKGROUND: Allergen immunotherapy has been shown to be an effective treatment for local allergic rhinitis (LAR) to house dust mites. Studies with pollen allergen immunotherapy are limited to observational studies. The aim of this study was to evaluate the clinical efficacy and safety of Phleum pratense subcutaneous immunotherapy (Phl-SCIT) in LAR. METHODS: In a randomized double-blind placebo-controlled study, 56 patients with moderate-severe LAR to grass pollen received Phl-SCIT with a depigmented-polymerized pollen vaccine or placebo for the first year, and Phl-SCIT the second one...
November 23, 2017: Allergy
https://www.readbyqxmd.com/read/29164823/immunoglobulin-g-structure-and-functional-implications-of-different-subclass-modifications-in-initiation-and-resolution-of-allergy
#17
REVIEW
Timothy H Scott-Taylor, Stefan-Claudiu Axinia, Sumeya Amin, Ruth Pettengell
IgE and not IgG is usually associated with allergy. IgE lodged on mast cells in skin or gut and basophils in the blood allows for the prolonged duration of allergy through the persistent expression of high affinity IgE receptors. However, many allergic reactions are not dependent on IgE and are generated in the absence of allergen specific and even total IgE. Instead, IgG plasma cells are involved in induction of, and for much of the pathogenesis of, allergic diseases. The pattern of IgG producing plasma cells in atopic children and the tendency for direct or further class switching to IgE are the principle factors responsible for long-lasting sensitization of mast cells in allergic children...
November 21, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29159964/blocking-antibodies-induced-by-allergen-specific-immunotherapy-ameliorate-allergic-airway-disease-in-a-human-mouse-chimeric-model
#18
Caterina Vizzardelli, Miriam Gindl, Simone Roos, Christian Möbs, Birgit Nagl, Felix Zimmann, Veronika Sexl, Lukas Kenner, Alina Neunkirchner, Gerhard J Zlabinger, Winfried F Pickl, Wolfgang Pfützner, Barbara Bohle
BACKGROUND: Allergen-specific immunotherapy (AIT) induces specific blocking antibodies (Ab) which are claimed to prevent IgE-mediated reactions to allergens. Additionally, AIT modulates cellular responses to allergens, e.g. by desensitizing effector cells, inducing regulatory T and B lymphocytes and immune deviation. It is still enigmatic which of these mechanisms mediate(s) clinical tolerance. We sought to address the role of AIT-induced blocking Ab separately from cellular responses in a chimeric human/mouse model of respiratory allergy...
November 21, 2017: Allergy
https://www.readbyqxmd.com/read/29156294/phospholipase-a1-based-cross-reactivity-among-venoms-of-clinically-relevant-hymenoptera-from-neotropical-and-temperate-regions
#19
Amilcar Perez-Riverol, Luís Gustavo Romani Fernandes, Alexis Musacchio Lasa, José Roberto Aparecido Dos Santos-Pinto, Débora Moitinho Abram, Gabriel Hideki Izuka Moraes, Frederic Jabs, Michaela Miehe, Henning Seismman, Mario Sergio Palma, Ricardo de Lima Zollner, Edzard Spillner, Márcia Regina Brochetto-Braga
Molecular cross-reactivity caused by allergen homology or cross-reactive carbohydrate determinants (CCDs) is a major challenge for diagnosis and immunotherapy of insect venom allergy. Venom phospholipases A1 (PLA1s) are classical, mostly non-glycosylated wasp and ant allergens that provide diagnostic benefit for differentiation of genuine sensitizations from cross-reactivity. As CCD-free molecules, venom PLA1s are not causative for CCD-based cross-reactivity. Little is known however about the protein-based cross-reactivity of PLA1 within vespid species...
November 17, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29150857/a-randomized-double-blind-placebo-controlled-dose-finding-trial-with-lolium-perenne-peptide-immunotherapy
#20
Ralph Mösges, Elena M Kasche, Esther Raskopf, Jaswinder Singh, Lea Sohlich, Anatoli Astvatsatourov, Kija Shah-Hosseini, Sabine Pirotton, Ludo Haazen, Stephen R Durham, Thierry Legon, Gregor Zadoyan, Mohamed H Shamji
BACKGROUND: A novel subcutaneous allergen immunotherapy formulation (gpASIT+(™) ) containing Lolium perenne peptides (LPP) and having a short up-dosing phase has been developed to treat grass pollen-induced seasonal allergic rhinoconjunctivitis. We investigated peptide immunotherapy containing the hydrolysate from perennial ryegrass allergens for the optimum dose in terms of clinical efficacy, immunogenicity, and safety. METHODS: This prospective, double-blind, placebo-controlled, phase IIb, parallel, four-arm, dose-finding study randomized 198 grass pollen-allergic adults to receive placebo or cumulative doses of 70, 170, or 370 μg LPP...
November 18, 2017: Allergy
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