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nasal allergen challenge

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https://www.readbyqxmd.com/read/29682277/the-allergic-rhinitis-clinical-investigator-collaborative-ar-cic-verification-of-nasal-allergen-challenge-procedures-in-a-study-utilizing-an-investigational-immunotherapy-for-cat-allergy
#1
Helen Neighbour, Mena Soliman, Lisa M Steacy, Pascal Hickey, Beth Forbes, Mark Larché, Anne K Ellis
Background: The Allergic Rhinitis Clinical Investigator Collaborative (AR-CIC) is a network of experienced Allergic Rhinitis (AR) researchers developing better research tools based on the nasal allergen challenge (NAC). A key objective of such is the ability to detect efficacy in a small population. AR-CIC sought to test its NAC protocol as a secondary objective in two small mechanistic research trials of a novel form of immunotherapy [Cat Peptide Antigen Desensitisation (Cat-PAD)] for which efficacy had previously been demonstrated...
2018: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/29661061/correlation-of-nasal-eosinophilia-and-response-after-nasal-provocation-test-in-patients-with-nonallergic-rhinitis
#2
Ki-Ik Park, Tae Young Jang, Seung-Chan Yang, Hyung Sun Hong, Young Hyo Kim
Objectives We aimed to evaluate the relationship between nasal eosinophilia and nasal hyperresponsiveness to allergen extract. Study Design Retrospective chart review. Setting Academic tertiary rhinologic practice. Subjects and Methods We performed allergy tests (skin prick test and multiple allergosorbent test) and nasal cytology for 194 patients with rhinitis symptoms (76 males and 118 females; age, 11-69 years). According to the results, they were classified into 4 groups: group A (allergic rhinitis with eosinophilia, n = 26), group B (allergic rhinitis without eosinophilia, n = 77), group C (nonallergic rhinitis with eosinophilia syndrome, n = 20), and group D (nonallergic rhinitis without eosinophilia, n = 71)...
April 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29656291/activin-a-is-a-pro-inflammatory-regulator-in-type-2-driven-upper-airway-disease
#3
Adam M Chaker, Ulrich Matthias Zissler, Nikolaos Poulos, Martin Wagenmann, Murat Bas, Ferdinand Gürth, Georgina Xanthou, Carsten Schmidt-Weber
BACKGROUND: Allergic upper airway disease involves pro-inflammatory type-2 cytokines such as IL-5 and regulatory tissue repair mediators, in particular transforming growth factor (TGF)-β1. The TGF-β-superfamily member activin-A displays multiple biological functions and shares certain signalling pathways with TGF-β1. We aimed to examine the coregulation of mucosal activin-A and TGF-β1 in acute allergic and chronic Th2-driven upper airway disease. METHODS: We investigated mucosal cytokine expression profiles and kinetics using RT-PCR after nasal allergen challenges in patients with seasonal allergic rhinitis...
April 13, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29615844/bepotastine-besilate-ophthalmic-solution-1-5-for-alleviating-nasal-symptoms-in-patients-with-allergic-conjunctivitis
#4
Megan E Cavet, Paul J Gomes, Warner W Carr, Jon I Williams
Background: Bepotastine besilate ophthalmic solution (BBOS) 1.5% is a topical antihistamine for the treatment of ocular itching associated with allergic conjunctivitis (AC). Allergic rhinitis and AC are common comorbid conditions. We explored the efficacy of BBOS 1.5% in alleviating nasal symptoms in an integrated analysis of two Phase III conjunctival allergen challenge (CAC) studies and a Phase IV environmental allergen study. Methods: In the Phase III trials, a CAC was performed 15 minutes, 8 hours, and 16 hours following ocular instillation of BBOS 1...
2018: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/29501480/nasal-and-ocular-challenges
#5
Amber N Pepper, Dennis K Ledford
Nasal and ocular challenges facilitate the evaluation of subjective and objective responses to defined allergen or irritant exposure. Nasal and ocular allergen challenges are the gold standard to diagnose allergic rhinitis and conjunctivitis, respectively, and aid in the evaluation of novel therapies in clinical trials. Additionally, nasal and ocular allergen challenges might help identify medically relevant allergens in clinical practice. Nonspecific or irritant challenges evaluate mucosal hyperreactivity...
May 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29479937/role-of-nasal-challenge-and-local-eosinophilia-in-indirect-exposure-to-cat-in-allergic-rhinitis-patients
#6
M Al Ahmad, N Arifhodzic, J Nurkic, E Jusufovic, A L Hanoun, T Rodriguez
Introduction. Sensitization to cat allergens is common worldwide. Currently, there is a trend towards costly and often unavailable diagnostic analysis. Objectives. The aim is to assess the reliability of skin prick test (SPT) and serum specific IgE (ssIgE) to cat sensitization, by performing nasal challenge test (NCT) in a community with low cat ownership but common presence of stray cats. Patients and methods. Forty-one pa-tients with perennial allergic rhinitis (AR) who were mono or polysensitized (including cat) were included...
January 17, 2018: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29432967/lack-of-effect-of-grastek%C3%A2-on-birch-pollen-induced-allergic-rhinoconjunctivitis-in-the-environmental-exposure-unit
#7
Anne K Ellis, Mark W Tenn, Lisa M Steacy, Daniel E Adams, Andrew G Day, Terry J Walker, Hendrik Nolte
BACKGROUND: Grastek® is a standardized sublingual immunotherapy tablet(SLIT-T) approved for the treatment of grass pollen-induced allergic rhinitis(AR) and conjunctivitis. Many grass-allergic patients are also co-sensitized to birch pollen. Whether Grastek® can confer symptomatic benefits for birch pollen-induced AR symptoms is unknown. OBJECTIVE: To evaluate the treatment effect of Grastek® for birch pollen-induced AR in participants sensitized to both grass and birch pollen using the Environmental Exposure Unit(EEU)...
February 9, 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29432965/repeatability-of-nasal-allergen-challenge-results-further-validation-of-the-allergic-rhinitis-clinical-investigator-collaborative-protocols
#8
Mena Soliman, Lisa M Steacy, Jenny Thiele, Dan E Adams, Helen L Neighbour, Anne K Ellis
BACKGROUND: Nasal allergen challenge (NAC) models have been used to study allergic rhinitis and new therapies. Symptoms and biological samples can be evaluated at time points after allergen exposure. OBJECTIVE: To verify protocol repeatability and adequate interval between allergen exposures. METHODS: Ten ragweed allergic participants were exposed to incrementally increasing dosages of ragweed allergen intranasally until they achieved a total nasal symptom score (TNSS) of 8 of 12 and a peak nasal inspiratory flow (PNIF) of 50% reduction or more from baseline...
February 9, 2018: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29427640/biphasic-activation-of-complement-and-fibrinolysis-during-the-human-nasal-allergic-response
#9
Ryan S Thwaites, Natasha C Gunawardana, Verena Broich, Elizabeth H Mann, Josefin Ahnström, Gaynor A Campbell, Sarah Lindsley, Nehmat Singh, Tanushree Tunstall, David A Lane, Peter J Openshaw, Catherine M Hawrylowicz, Trevor T Hansel
No abstract text is available yet for this article.
February 7, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29425904/onset-of-action-of-the-fixed-combination-intranasal-azelastine-fluticasone-propionate-in-an-allergen-exposure-chamber
#10
Jean Bousquet, Eli O Meltzer, Peter Couroux, Arkady Koltun, Ferdinand Kopietz, Ullrich Munzel, Hans Christian Kuhl, Duc Tung Nguyen, Anne Marie Salapatek, David Price
BACKGROUND: A fixed-dose combination of intranasal azelastine hydrochloride and fluticasone propionate (MP-AzeFlu) is the most effective treatment of allergic rhinitis, but its onset of action requires further investigation. OBJECTIVE: To compare the onset of action of MP-AzeFlu with the free combination of oral loratadine (LORA) and intranasal fluticasone propionate (INFP). METHODS: In this single-center, randomized, placebo-controlled, double-blind, double-dummy, 3-period crossover trial, allergic rhinitis symptoms were induced in asymptomatic patients by ragweed pollen challenge in an allergen environmental exposure chamber...
February 7, 2018: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/29377177/eaaci-position-paper-on-the-standardization-of-nasal-allergen-challenges
#11
J Augé, J Vent, I Agache, L Airaksinen, P Campo Mozo, A Chaker, C Cingi, S Durham, W Fokkens, P Gevaert, A Giotakis, P Hellings, M Herknerova, V Hox, L Klimek, C La Melia, J Mullol, N B Muluk, A Muraro, K Naito, O Pfaar, H Riechelmann, C Rondon, M Rudenko, B Samolinski, I Tasca, P Tomazic, K Vogt, M Wagenmann, G Yeryomenko, L Zhang, R Mösges
Nasal allergen challenge (NAC) is an important tool to diagnose allergic rhinitis. In daily clinical routine, experimentally, or when measuring therapeutic success clinically, nasal allergen challenge is fundamental. It is further one of the key diagnostic tools when initiating specific allergen immunotherapy. So far, national recommendations offered guidance on its execution; however, international divergence left many questions unanswered. These differences in the literature caused EAACI to initiate a task force to answer unmet needs and find a consensus in executing nasal allergen challenge...
January 27, 2018: Allergy
https://www.readbyqxmd.com/read/29336284/assessing-the-onset-of-allergic-rhinitis-by-nasal-cytology-and-immunoglobulin-e-antibody-levels-in-children
#12
Hirokuni Otsuka, Kuninori Otsuka, Shoji Matsune, Kimihiro Okubo
BACKGROUND: It is difficult to identify the onset of allergic rhinitis in infants because making a conclusive diagnosis can be challenging. OBJECTIVE: We used a combination of cell differentials in nasal swabs and immunoglobulin E (sIgE) antibody values to food and inhalant allergens to make the diagnosis and identify relevant allergens for investigation of the onset of allergic rhinitis. METHODS: We studied 302 children, 2 to 120 months old, who visited our clinic for rhinorrhea...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29216343/nonhuman-primate-models-of-respiratory-disease-past-present-and-future
#13
Lisa A Miller, Christopher M Royer, Kent E Pinkerton, Edward S Schelegle
The respiratory system consists of an integrated network of organs and structures that primarily function for gas exchange. In mammals, oxygen and carbon dioxide are transmitted through a complex respiratory tract, consisting of the nasal passages, pharynx, larynx, and lung. Exposure to ambient air throughout the lifespan imposes vulnerability of the respiratory system to environmental challenges that can contribute toward development of disease. The importance of the respiratory system to human health is supported by statistics from the Centers for Disease Control and Prevention; in 2015, chronic lower respiratory diseases were the third leading cause of death in the United States...
December 1, 2017: ILAR Journal
https://www.readbyqxmd.com/read/29157860/advances-in-rhinitis-models-and-mechanisms
#14
REVIEW
Anne K Ellis, Mark W Tenn
OBJECTIVE: To summarize studies highlighting recent advances in rhinitis-related research in the past 2 years. DATA SOURCES: Original research articles were procured and examined from the Rhinitis and Upper Airway Disease section of the 2015 to 2017 Annals of Allergy, Asthma & Immunology issues. Additional original research articles were identified from PubMed and Google Scholar using the following search terms: allergic rhinitis, rhinitis, chronic rhinosinusitis, environmental exposure unit, and nasal allergen challenge...
November 18, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/29128670/synchronous-immune-alterations-mirror-clinical-response-during-allergen-immunotherapy
#15
Amedee Renand, Mohamed H Shamji, Kristina M Harris, Tielin Qin, Erik Wambre, Guy W Scadding, Peter A Wurtzen, Stephen J Till, Alkis Togias, Gerald T Nepom, William W Kwok, Stephen R Durham
BACKGROUND: Three years of treatment with either sublingual or subcutaneous allergen immunotherapy has been shown to be effective and to induce long-term tolerance. The Gauging Response in Allergic Rhinitis to Sublingual and Subcutaneous Immunotherapy (GRASS) trial demonstrated that 2 years of treatment through either route was effective in suppressing the response to nasal allergen challenge, although it was insufficient for inhibition 1 year after discontinuation. OBJECTIVE: We sought to examine in the GRASS trial the time course of immunologic changes during 2 years of sublingual and subcutaneous immunotherapy and for 1 year after treatment discontinuation...
November 9, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29046347/investigating-immune-gene-signatures-in-peripheral-blood-from-subjects-with-allergic-rhinitis-undergoing-nasal-allergen-challenge
#16
Young Woong Kim, Amrit Singh, Casey P Shannon, Jenny Thiele, Lisa M Steacy, Anne K Ellis, Helen Neighbour, Daniel R Gliddon, Pascal L C Hickey, Mark Larché, Scott J Tebbutt
Nasal allergen challenge (NAC) is a human model of allergic rhinitis (AR) that delivers standardized allergens locally to the nasal mucosa allowing clinical symptoms and biospecimens such as peripheral blood to be collected. Although many studies have focused on local inflammatory sites, peripheral blood, an important mediator and a component of the systemic immune response, has not been well studied in the setting of AR. We sought to investigate immune gene signatures in peripheral blood collected after NAC under the setting of AR...
November 15, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29037302/feno-levels-increase-with-degree-of-sensitisation-in-apprentices-at-risk-of-occupational-asthma
#17
P Wild, H Mével, E Penven, D Zmirou-Navier, A Barbaud, A Bohadana, C Paris
BACKGROUND: Atopy has emerged as a major determinant of airway inflammation. OBJECTIVE: To examine whether early markers of occupational asthma increase with degree of sensitisation. METHOD: This study was a prospective follow-up study of apprentices in baking, pastry-cooking and hairdressing during their 2-year apprenticeship. Four visits were conducted to administer a standardised questionnaire, a methacholine challenge test to assess bronchial hyperresponsiveness (BHR) and to measure fractional exhaled nitric oxide (FeNO)...
November 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28932387/peak-nasal-inspiratory-flow-as-outcome-for-provocation-studies-in-allergen-exposure-chambers-a-ga-2-len-study
#18
Georg Boelke, Uwe Berger, Karl-Christian Bergmann, Carsten Bindslev-Jensen, Jean Bousquet, Julia Gildemeister, Marek Jutel, Oliver Pfaar, Torsten Sehlinger, Torsten Zuberbier
BACKGROUND: The GA(2)LEN chamber has been developed as a novel mobile allergen exposure chamber (AEC) allowing standardized multicenter trials in allergy. Hitherto, subjective nasal symptom scores have been the most often used outcome parameter, but in standardized modern trials objective parameters are preferred. Despite its practicability, the objective parameter peak nasal inspiratory flow (PNIF) has been rarely used for allergy trials in the setting of allergen exposure chambers. This study aims to evaluate PNIF as an outcome parameter for provocation studies in AECs...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28911971/the-effects-of-house-dust-mite-sublingual-immunotherapy-tablet-on-immunologic-biomarkers-and-nasal-allergen-challenge-symptoms
#19
Natasha C Gunawardana, Qing Zhao, Leonidas N Carayannopoulos, Kuenhi Tsai, Vladislav A Malkov, Diana Selverian, Graham Clarke, Tim Mant, Brent D Butts, Kaare Lund, Trevor T Hansel, Hendrik Nolte
No abstract text is available yet for this article.
February 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28862062/methyl-cellulose-powder-for-prevention-and-management-of-nasal-symptoms
#20
Todor A Popov, Nils Åberg, Jean Emberlin, Peter Josling, Natalia I Ilyina, Nikolai P Nikitin, Martin Church
HPMC-p, an inert micronized powder form of hydroxy-propyl-methyl-cellulose, when insufflated nasally, provides a natural barrier against pollen allergens and noxious agents. This overview assesses the efficacy and safety of this patented powder product and delivery system without an analogue among the cellulose derivatives. Areas covered: Twenty-six studies with HPMC-p were critically appraised to obtain an updated characteristic of the product. Most studies assessed the efficacy of HPMC-p as a nasal barrier enforcing measure: one experimental setup evaluated its ability to prevent or delay the diffusion of allergen through it, two clinical studies used allergen provocation tests, and the remaining relied on clinical criteria in open real world or placebo controlled designs...
September 6, 2017: Expert Review of Respiratory Medicine
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