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Mast cell asthma

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https://www.readbyqxmd.com/read/29338159/ovariectomy-modifies-th2-and-th17-balance-in-balb-c-allergic-mice
#1
Marcos Paulo Almeida Souza, Fernanda Macedo da Silva Lima, Igor Pereira Muniz, Ítalo Sousa Pereira, Larissa Rodrigues de Oliveira Sousa, Maria Poliana Leite Galantini, Denisar Palmito Dos Santos, Tiana Baqueiro Figueiredo, Robson Amaro Augusto da Silva
Asthma is a chronic inflammation of the airways affecting over 300 million people worldwide. As in the autoimmune diseases, it is well described that women are the most affected by asthma. The higher number of women presenting this pathology suggests the involvement of female sex hormones in the construction of the allergic immune response. Female Balb / c mice were used for the experiments. Thirty-eight animals were separated into four groups: OVX-Ova; Sham-Ova; OVX-Sal; Sham-Sal. Then animals underwent acute allergic induction protocol by Ovalbulmin (OVA)...
December 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29336501/uncontrolled-asthmatics-have-increased-fceri-and-tgf-%C3%AE-positive-mctc-mast-cells-and-collagen-vi-in-the-alveolar-parenchyma
#2
Cecilia K Andersson, Maria Weitoft, Kristina Rydell-Törmänen, Leif Bjermer, Gunilla Westergren-Thorsson, Jonas S Erjefält
BACKGROUND: Asthma has been associated with increased collagen deposition in both conducting airways and alveolar parenchyma. Mast cells (MCs) are key effector cells in asthma, and have the ability to affect collagen synthesis. However, the link between clinical control and changes in bronchial and alveolar MC phenotypes and specific collagens in controlled and uncontrolled asthma remains unknown. OBJECTIVE: To investigate MC phenotypes in correlation to deposition of specific collagen subtypes in patients with controlled and uncontrolled asthma as well as to healthy controls...
January 16, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29336282/role-of-group-2-innate-lymphocytes-in-aspirin-exacerbated-respiratory-disease-pathogenesis
#3
Andrew A White, Taylor A Doherty
Aspirin-exacerbated respiratory disease (AERD) is characterized by chronic eosinophilic nasal polyps, asthma, and airway reactions upon cyclooxygenase (COX) 1 inhibition. AERD is present in up to 7% of adult patients with asthma and the underlying pathogenesis remains largely elusive but prostaglandin D2, cysteinyl leukotrienes, mast cells, and type 2 cytokines are thought to contribute. A wealth of studies have recently implicated group 2 innate lymphoid cells (ILC2), a novel lineage-negative lymphocyte population that produces type 2 cytokines, in human allergic disease pathogenesis...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29336054/the-eaaci-ga%C3%A2-len-edf-wao-guideline-for-the-definition-classification-diagnosis-and-management-of-urticaria-the-2017-revision-and-update
#4
T Zuberbier, W Aberer, R Asero, A H Abdul Latiff, D Baker, B Ballmer-Weber, J A Bernstein, C Bindslev-Jensen, Z Brzoza, R Buense Bedrikow, G W Canonica, M K Church, T Craig, I V Danilycheva, C Dressler, L F Ensina, A Giménez-Arnau, K Godse, M Gonçalo, C Grattan, J Hebert, M Hide, A Kaplan, A Kapp, C H Katelaris, E Kocatürk, K Kulthanan, D Larenas-Linnemann, T A Leslie, M Magerl, P Mathelier-Fusade, R Y Meshkova, M Metz, A Nast, E Nettis, H Oude-Elberink, S Rosumeck, S S Saini, M Sánchez-Borges, P Schmid-Grendelmeier, P Staubach, G Sussman, E Toubi, G A Vena, C Vestergaard, B Wedi, R N Werner, Z Zhao, M Maurer
This evidence and consensus-based guideline was developed following the methods recommended by Cochrane and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) working group. The conference was held on December 1st, 2016. It is a joint initiative of the Dermatology Section of the European Academy of Allergology and Clinical Immunology (EAACI), the EU-founded network of excellence, the Global Allergy and Asthma European Network (GA²LEN), the European Dermatology Forum (EDF), and the World Allergy Organization (WAO) with the participation of 48 delegates of 42 national and international societies...
January 15, 2018: Allergy
https://www.readbyqxmd.com/read/29321987/gelam-honey-attenuates-ovalbumin-induced-airway-inflammation-in-a-mice-model-of-allergic-asthma
#5
Nur Salme Suhana Shamshuddin, Rozaini Mohd Zohdi
Allergic asthma is a chronic inflammatory disorder of the pulmonary airways. Gelam honey has been proven to possess anti-inflammatory property with great potential to treat an inflammatory condition. However, the effect of ingestion of Gelam honey on allergic asthma has never been studied. This study aimed to investigate the efficacy of Gelam honey on the histopathological changes in the lungs of a mice model of allergic asthma. Forty-two Balb/c mice were divided into seven groups: control, I, II, III, IV, V and VI group...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29316647/role-of-polyamines-in-asthma-pathophysiology
#6
REVIEW
Vaibhav Jain
Asthma is a complex disease of airways, where the interactions of immune and structural cells result in disease outcomes with airway remodeling and airway hyper-responsiveness. Polyamines, which are small-sized, natural super-cations, interact with negatively charged intracellular macromolecules, and altered levels of polyamines and their interactions have been associated with different pathological conditions including asthma. Elevated levels of polyamines have been reported in the circulation of asthmatic patients as well as in the lungs of a murine model of asthma...
January 6, 2018: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29306980/sex-in-respiratory-and-skin-allergies
#7
REVIEW
Erminia Ridolo, Cristoforo Incorvaia, Irene Martignago, Marco Caminati, Giorgio Walter Canonica, Gianenrico Senna
A bulk of literature demonstrated that respiratory allergy, and especially asthma, is prevalent in males during childhood, while it becomes more frequent in females from adolescence, i.e., after menarche, to adulthood. The mechanisms underlying the difference between females and males are the effects on the immune response of female hormones and in particular the modulation of inflammatory response by estrogens, as well as the result of the activity of various cells, such as dendritic cells, innate lymphoid cells, Th1, Th2, T regulatory (Treg) and B regulatory (Bregs) cells, and a number of proteins and cytokines, which include interleukin (IL)-4, IL-5, IL-10, and IL-13...
January 6, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29301162/milbenallergie-im-hno-bereich-bedeutung-diagnostik-und-therapieoptionen
#8
Ludger Klimek, Moritz Gröger, Sven Becker
Allergic rhinitis (AR) affects ca. 20% of the population. Approximately one third of patients affected by AR are suffering from perennial rhinitis due to mite allergy. Perennial rhinitis is the form of the disease that is most frequently associated with other allergy-related comorbidities such as asthma and atopic dermatitis, sleep disorders, chronic sinusitis, eustachian tube dysfunction and others.The often non-specific symptoms and the insidious course may lead to misinterpretations in diagnosing the disease...
January 2018: Laryngo- Rhino- Otologie
https://www.readbyqxmd.com/read/29282304/type-2-cysteinyl-leukotriene-receptors-drive-il-33-dependent-type-2-immunopathology-and-aspirin-sensitivity
#9
Tao Liu, Nora A Barrett, Yoshihide Kanaoka, Eri Yoshimoto, Denise Garofalo, Haley Cirka, Chunli Feng, Joshua A Boyce
Cysteinyl leukotrienes (cysLTs) facilitate mucosal type 2 immunopathology by incompletely understood mechanisms. Aspirin-exacerbated respiratory disease, a severe asthma subtype, is characterized by exaggerated eosinophilic respiratory inflammation and reactions to aspirin, each involving the marked overproduction of cysLTs. Here we demonstrate that the type 2 cysLT receptor (CysLT2R), which is not targeted by available drugs, is required in two different models to amplify eosinophilic airway inflammation via induced expression of IL-33 by lung epithelial cells...
December 27, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29282192/mast-cell-activation-syndrome
#10
Owen N Kramer, Marla S Barkoff, Claudia Hernandez
A 51-year-old woman with a history of asthma and Hashimoto's thyroiditis presented to the dermatology service with a chief complaint of "itchy bumpy rashes" that persisted beyond 24 hours. She noted that, 3 days prior to the onset of urticaria, a pyrroloquinoline quinone supplement had been started. The urticaria was accompanied by variable episodes of transient facial swelling and difficulty breathing. The patient noted that exposure to fish, nuts, and nonsteroidal anti-inflammatory drugs triggered facial swelling...
2017: Skinmed
https://www.readbyqxmd.com/read/29276415/crth2-antagonists-in-asthma-current-perspectives
#11
REVIEW
Dave Singh, Arjun Ravi, Thomas Southworth
Chemoattractant receptor-homologous molecule expressed on TH2 cells (CRTH2) binds to prostaglandin D2. CRTH2 is expressed on various cell types including eosinophils, mast cells, and basophils. CRTH2 and prostaglandin D2 are involved in allergic inflammation and eosinophil activation. Orally administered CRTH2 antagonists are in clinical development for the treatment of asthma. The biology and clinical trial data indicate that CRTH2 antagonists should be targeted toward eosinophilic asthma. This article reviews the clinical evidence for CRTH2 involvement in asthma pathophysiology and clinical trials of CRTH2 antagonists in asthma...
2017: Clinical Pharmacology: Advances and Applications
https://www.readbyqxmd.com/read/29261008/the-medicinal-mushroom-grifola-gargal-ameliorates-allergic-bronchial-asthma
#12
Etsuko Harada, Corina N D'Alessandro-Gabazza, Masaaki Toda, Toshihiro Morizono, Toshiaki Totoki, Taro Yasuma, Kota Nishihama, Tetsu Kobayashi, Toshimitsu Sumiya, Hirokazu Kawagishi, Esteban C Gabazza
Grifola gargal Singer, a medicinal mushroom, has been found to be effective for the prevention and treatment of various chronic inflammatory diseases. However, the effects of G. gargal on allergic diseases are unknown. The present study investigated the effect of G. gargal extract on allergic bronchial asthma. Asthma was induced in mice by ovalbumin sensitization and inhalation. The grade of asthma was compared between mice fed with chow containing G. gargal extract and mice given standard chow. The human mast cell and eosinophilic cell lines were used for in vitro studies...
December 20, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29247993/interleukin-33-il-33-a-nuclear-cytokine-from-the-il-1-family
#13
REVIEW
Corinne Cayrol, Jean-Philippe Girard
Interleukin-33 (IL-33) is a tissue-derived nuclear cytokine from the IL-1 family abundantly expressed in endothelial cells, epithelial cells and fibroblast-like cells, both during homeostasis and inflammation. It functions as an alarm signal (alarmin) released upon cell injury or tissue damage to alert immune cells expressing the ST2 receptor (IL-1RL1). The major targets of IL-33 in vivo are tissue-resident immune cells such as mast cells, group 2 innate lymphoid cells (ILC2s) and regulatory T cells (Tregs)...
January 2018: Immunological Reviews
https://www.readbyqxmd.com/read/29247697/antiallergic-and-antihistaminic-actions-of-ceasalpinia-bonducella-seeds-possible-role-in-treatment-of-asthma
#14
Sunayana Vikhe, Sunil Nirmal, Suhas Siddheshwar
ETHNOPHARMACOLOGICAL RELEVANCE: Seed kernel of the plant Ceasalpinia bonducella Linn (Caesalpiniacaeae) are used for the treatment of asthma in folk medicine and ancient books. AIM OF STUDY: To assess the pharmacological efficacy of the plant in asthma and to confine and describe the synthetic constituents from the seeds that are in charge of the action. MATERIAL AND METHODS: The viability of petroleum ether and ethanol extracts of C. bonducella seeds were screened for the treatment of asthma by various methods viz...
December 13, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29247205/prostaglandin-d2-metabolite-in-urine-is-an-index-of-food-allergy
#15
Shingo Maeda, Tatsuro Nakamura, Hiroaki Harada, Yuri Tachibana, Kosuke Aritake, Tatsuo Shimosawa, Yutaka Yatomi, Takahisa Murata
Food allergy is immediate hypersensitive reactions to ingested foods. Since early diagnosis is effective for disease control, development of an objective diagnostic index is required. Using mediator-lipidomics, we found that levels of the urinary prostaglandin D2 (PGD2) metabolite, tetranor-PGDM, reflected the severity of the allergic symptoms and intestinal mast cell hyperplasia in mice. Repeated oral challenges with ovalbumin promoted allergic symptoms in sensitized mice. Particularly, the allergic mice presented with increased numbers of intestinal mast cells, which strongly expressed hematopoietic PGD synthase (H-PGDS)...
December 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29235261/interferon-%C3%AE-2-and-interferon-%C3%AE-induce-the-degranulation-independent-production-of-vegf-a-and-il-1-receptor-antagonist-and-other-mediators-from-human-mast-cells
#16
Sharon A Oldford, Suzanne P Salsman, Liliana Portales-Cervantes, Raidan Alyazidi, Robert Anderson, Ian D Haidl, Jean S Marshall
BACKGROUND: Mast cells are resident immune effector cells, often studied in the context of allergic disease. Found in substantial numbers at sites of potential infection they are increased at sites of angiogenesis and can be pivotal for the sensing and clearance of a variety of pathogens. Interferons (IFNs) are cytokines that are critical for host defence against intracellular pathogens. Increased levels of IFNs are observed during viral infection and in autoimmune diseases. IFNs are also widely used therapeutically and have been examined in the therapy of severe asthma...
December 13, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29233467/aspergillus-fumigatus-sensitive-ige-is-associated-with-bronchial-hypersensitivity-in-a-murine-model-of-neutrophilic-airway-inflammation
#17
G Morán, B Uberti, A Ortloff, H Folch
Neutrophils are the predominant inflammatory cells that infiltrate airways during acute exacerbation of asthma. The importance of A. fumigatus sensitization, and IgE response in the airways in patients with acute asthma is unclear. Rockefeller (RK) mice were sensitized with A. fumigatus extract protein. The animals were subsequently challenged with different degrees of A. fumigatus contamination in the cage bedding. All groups of mice were euthanized to obtain bronchoalveolar lavage fluid (BALF) for cytological and Elisa assays, and lung tissue for histological analysis...
December 7, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/29232822/microglia-m2a-polarization-as-potential-link-between-food-allergy-and-autism-spectrum-disorders
#18
REVIEW
Hans O Kalkman, Dominik Feuerbach
Atopic diseases are frequently co-morbid with autism spectrum disorders (ASD). Allergic responses are associated with an activation of mast cells, innate lymphoid cells, and Th2 cells. These cells produce type-2 cytokines (IL4 and IL13), which stimulate microglia and macrophages to adopt a phenotype referred to as 'alternative activation' or 'M2A'. M2A-polarized macrophages and microglia play a physiological role in tissue repair by secreting growth factors such as brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1...
December 9, 2017: Pharmaceuticals
https://www.readbyqxmd.com/read/29230220/induction-of-human-lung-mast-cell-apoptosis-by-granule-permeabilization-a-novel-approach-for-targeting-mast-cells
#19
Aida Paivandy, Martin Sandelin, Helena Igelström, Per Landelius, Christer Janson, Fabio R Melo, Gunnar Pejler
Mast cells are implicated as detrimental players in inflammatory lung diseases, particularly asthma. Mast cells respond to activating stimuli by releasing a wide panel of pro-inflammatory compounds that can contribute profoundly to the pathology, and there is currently an unmet need for strategies that efficiently ameliorate harmful effects of mast cells under such conditions. Here, we sought to evaluate a novel concept for targeting human lung mast cells, by assessing the possibility of selectively depleting the lung mast cells by induction of apoptosis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29221580/mechanisms-of-allergen-immunotherapy-for-inhaled-allergens-and-predictive-biomarkers
#20
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
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