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https://www.readbyqxmd.com/read/28346234/outstanding-animal-studies-in-allergy-i-from-asthma-to-food-allergy-and-anaphylaxis
#1
Erika Jensen-Jarolim, Isabella Pali-Schöll, Franziska Roth-Walter
PURPOSE OF REVIEW: Animal models published within the past 18 months on asthma, food allergy and anaphylaxis, all conditions of rising public health concern, were reviewed. RECENT FINDINGS: While domestic animals spontaneously develop asthma, food allergy and anaphylaxis, in animal models, divergent sensitization and challenge routes, dosages, intervals and antigens are used to induce asthmatic, food allergic or anaphylactic phenotypes. This must be considered in the interpretation of results...
March 24, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28346024/increased-il-4-and-il-17-producing-cd8-cells-are-related-to-decreased-cd39-cd4-foxp3-cells-in-allergic-asthma
#2
Li Ping, Zhen Yang, Qin Zhang, Wei Wang, Jiong Yang
OBJECTIVE: In allergic asthma, regulatory T cell (Treg) number and function are decreased. Antigen primed CD8(+) T cells play an indispensable role in the full development of airway inflammation and airway hyper-responsiveness (AHR) occurring in asthma. In this study, we investigated the relationship between subpopulations of CD8(+) T cells and CD39(+) Tregs. METHODS: Female C57BL/6 mice were used to develop the model of allergic asthma. Experimental mice were immunized with ovalbumin (OVA) by intra-peritoneal (i...
March 27, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28340859/heterogeneity-of-obesity-asthma-association-disentangled-by-latent-class-analysis-the-sapaldia-cohort
#3
Ayoung Jeong, Medea Imboden, Sofie Hansen, Elisabeth Zemp, Pierre-Olivier Bridevaux, Gianfranco Lovison, Christian Schindler, Nicole Probst-Hensch
Although evidence for the heterogeneity of asthma accumulated, consensus for definitions of asthma phenotypes is still lacking. Obesity may have heterogeneous effects on various asthma phenotypes. We aimed to distinguish asthma phenotypes by latent class analysis and to investigate their associations with different obesity parameters in adults using a population-based Swiss cohort (SAPALDIA). We applied latent class analysis to 959 self-reported asthmatics using information on disease activity, atopy, and age of onset...
April 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28339136/eosinophilic-oesophagitis-phenotypes-ready-for-primetime
#4
REVIEW
Dan Atkins, Glenn T Furuta, Chris A Liacouras, Jonathan M Spergel
Eosinophilic Oesophagitis (EoE) is one of the most common causes of reflux like symptoms and feeding problems in children and food impaction and dysphagia in adults with a prevalence of 1:2500. Therapeutic options include diet, use of swallowed corticosteroids or dilation. In the last several years, recent clinical and translational research have identified some common and distinctive features, for example, the varying response to diet and medications. As EoE shares some characteristics with both asthma and inflammatory bowel disease, the advances in these fields suggests that various phenotypes may also exist in patients with EoE...
March 24, 2017: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/28333691/asthma-prevalence-and-severity-in-low-resource-communities
#5
Álvaro A Cruz, Rafael Stelmach, Eduardo V Ponte
PURPOSE OF REVIEW: The prevalence of asthma was thought to be low in most low-income countries, but several reports have indicated this is not always true. This is a narrative review of recent publications on the burden of asthma in low and middle-income countries (LMIC) and underprivileged communities from developed countries. RECENT FINDINGS: Several studies have reported a low prevalence of asthma is LMIC, but indicate it is increasing. In the last few years, however, many surveys demonstrated this may not always be true...
March 22, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28332107/mechanisms-driving-gender-differences-in-asthma
#6
REVIEW
Hubaida Fuseini, Dawn C Newcomb
PURPOSE OF REVIEW: Many phenotypes of asthma exist, ranging from mild asthma with onset during childhood to severe asthma with later onset, making asthma a broad disease with different pathologies. A gender disparity exists in asthma prevalence. As adults, women have an increased asthma prevalence compared to men. Further, women are more likely to have severe asthma and a later onset of asthma compared to men. Here, we review clinical and animal studies that have defined the role of sex hormones in airway inflammation, smooth muscle contraction, mucus production, and airway mechanics associated with asthma pathogenesis...
March 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28331417/%C3%AE-tocotrienol-inhibits-tgf-%C3%AE-1-induced-contractile-phenotype-expression-of-human-airway-smooth-muscle-cells
#7
Takehito Fukushima, Akira Yamasaki, Tomoya Harada, Hiroki Chikumi, Masanari Watanabe, Ryota Okazaki, Miki Takata, Yasuyuki Hasegawa, Jun Kurai, Masaaki Yanai, Akihiro Yamamoto, Yuriko Sueda, Andrew J Halayko, Eiji Shimizu
BACKGROUND: Tocotrienols, members of the vitamin E family, exist in four different isoforms (α, β, γ and δ tocotrienol) that have can be protective against brain damage, as well as having anticancer effects in vivo and in vitro. We have shown that γ-tocotrienol inhibits human airway smooth muscle cell proliferation and migration induced by platelet-derived growth factor (PDGF)-BB by suppressing RhoA activation. In this study, we tested whether γ-tocotrienol modulates transforming growth factor (TGF) -β-induced induction of human airway smooth muscle (ASM) into a contractile phenotype and concomitant synthesis of extracellular matrix proteins...
March 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28330427/comparison-of-airway-response-in-na%C3%A3-ve-and-ovalbumin-sensitized-mice-during-short-term-inhalation-exposure-to-chlorine
#8
Mia Johansson, Åsa Gustafsson, Gunnar Johanson, Mattias Öberg
OBJECTIVE: It has been suggested that asthmatics are more susceptible than healthy individuals to airborne irritating chemicals in general. However, there is limited human data available to support this hypothesis due to ethical and practical difficulties. We explored a murine model of ovalbumin (OVA)-induced airway inflammation to study susceptibility during acute exposure to chemicals with chlorine as a model substance. METHODS: Naïve and OVA sensitized female BALB/c mice were exposed to chlorine at four different concentrations (0, 5, 30 and 80 ppm) for 15 minutes with online recording of the respiratory function by plethysmography...
February 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28328160/co-morbidities-in-severe-asthma-clinical-impact-and-management
#9
REVIEW
Celeste Porsbjerg, Andrew Menzies-Gow
Patients with severe asthma represent a minority of the total asthma population, but carry a majority of the morbidity and healthcare costs. Achieving better asthma control in this group of patients is therefore of key importance. Systematic assessment of patients with possible severe asthma to identify treatment barriers and triggers of asthma symptoms, including co-morbidities, improves asthma control and reduces healthcare costs and is recommended by international guidelines on management of severe asthma...
March 22, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28328094/asthma-management-a-new-phenotype-based-approach-using-presence-of-eosinophilia-and-allergy
#10
REVIEW
Milan Terl, Vratislav Sedlák, Petr Cap, Renata Dvořáková, Viktor Kašák, Tomáš Kočí, Bronislava Novotna, Ester Seberova, Petr Panzner, Vladimir Zindr
Asthma is a heterogeneous disease. The Czech Pneumology and Allergology Societies commissioned 10 experts to review the literature and create joint national guidelines for managing asthma, reflecting this heterogeneity. The aim was to develop an easy-to-use diagnostic strategy as a rational approach to the widening opportunities for the use of phenotype-targeted therapy. The guidelines were presented on websites for public comments by members of both the societies. The reviewers' comments contributed to creating the final version of the guidelines...
March 22, 2017: Allergy
https://www.readbyqxmd.com/read/28326636/il4r%C3%AE-and-adam33-as-genetic-markers-in-asthma-exacerbations-and-type-2-inflammatory-endotype
#11
Hironobu Sunadome, Hisako Matsumoto, Guergana Petrova, Yoshihiro Kanemitsu, Yuji Tohda, Takahiko Horiguchi, Hideo Kita, Kazunobu Kuwabara, Keisuke Tomii, Kojiro Otsuka, Masaki Fujimura, Noriyuki Ohkura, Katsuyuki Tomita, Akihito Yokoyama, Hiroshi Ohnishi, Yasutaka Nakano, Tetsuya Oguma, Soichiro Hozawa, Tadao Nagasaki, Isao Ito, Tsuyoshi Oguma, Hideki Inoue, Tomoko Tajiri, Toshiyuki Iwata, Yumi Izuhara, Junya Ono, Shoichiro Ohta, Tomomitsu Hirota, Mayumi Tamari, Tetsuji Yokoyama, Akio Niimi, Kenji Izuhara, Michiaki Mishima
BACKGROUND: Genetic markers of susceptibility to asthma exacerbations in adults remain unclear. OBJECTIVE: To identify genetic markers of asthma exacerbations, particularly in patients with type-2 inflammatory endotype. METHODS: In this observational study of patients enrolled in the Kinki Hokuriku Airway disease Conference multicenter study, frequency of exacerbations requiring systemic corticosteroids during 2 years after enrolment and associated risk factors were determined...
March 22, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28319473/precision-medicine-in-asthma-the-role-of-bronchial-thermoplasty
#12
Amber J Oberle, Praveen Mathur
PURPOSE OF REVIEW: The inflammatory makeup of severe asthma is heterogeneous. Identification of the predominant cellular endotype via biomarkers can aid in the selection of more advanced therapies. This review is clinically focused on how to use these biomarkers to help select between biologic agents and/or bronchial thermoplasty. RECENT FINDINGS: Several Th2 biomarkers exist for the detection of eosinophilic disease; however, the best biomarker for clinical practice is debatable depending upon local resources...
May 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28318886/airway-inflammation-phenotype-prediction-in-asthma-patients-using-lung-sound-analysis-with-fractional-exhaled-nitric-oxide
#13
Terufumi Shimoda, Yasushi Obase, Yukio Nagasaka, Hiroshi Nakano, Reiko Kishikawa, Tomoaki Iwanaga
BACKGROUND: We previously reported the results of lung sound analysis in patients with bronchial asthma and demonstrated that the exhalation-to-inhalation sound pressure ratio in the low frequency range between 100 and 200 Hz (E/I LF) was correlated with the presence of airway inflammation and airway obstruction. We classified asthma patients by airway inflammation phenotype using the induced sputum eosinophil and neutrophil ratio and determined whether this phenotype could be predicted using E/I LF and fractional exhaled nitric oxide values...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28318885/genetic-association-of-the-functional-cdhr3-genotype-with-early-onset-adult-asthma-in-japanese-populations
#14
Jun Kanazawa, Hironori Masuko, Yohei Yatagai, Tohru Sakamoto, Hideyasu Yamada, Yoshiko Kaneko, Haruna Kitazawa, Hiroaki Iijima, Takashi Naito, Takefumi Saito, Emiko Noguchi, Satoshi Konno, Masaharu Nishimura, Tomomitsu Hirota, Mayumi Tamari, Nobuyuki Hizawa
BACKGROUND: Recent studies have demonstrated that a coding SNP (rs6967330, Cys529→Tyr) in cadherin-related family member 3 (CDHR3), which was previously associated with wheezing illness and hospitalizations in infancy, could support efficient human rhinovirus C (RV-C) entry and replication. Here, we sought to examine the genetic contribution of this variant to the development of adult asthma. METHODS: We performed a candidate gene case-control association study of 2 independent Japanese populations (a total of 3366 adults)...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28318118/distinct-expression-of-nk2-homeobox-1-nkx2-1-and-goblet-cell-hyperplasia-in-nasal-polyps-with-different-endotypes
#15
Jintao Du, Luo Ba, Bo Li, Feng Liu, Xianting Hu, Jie Zhang, Yafeng Liu, Junming Xian, Sixi Liu, Huabin Li
BACKGROUND: Decreased expression of airway epithelial-specific transcription factor NK2 homeobox 1 (NKX2-1) was associated with allergic inflammation in asthma patients. However, the expression and role of NKX2-1 in nasal polyps (NPs) with different endotypes were undefined yet. METHODS: We examined the expression of key cytokines (interleukin [IL]-4 IL-5, IL-13, and IL-17A, etc.) and NKX2-1 in NPs with different endotypes and control tissues by immunohistochemistry staining, qualitative polymerase chain reaction (qPCR), enzyme-linked immunosorbent assay (ELISA), and Western blot analysis...
March 20, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28306160/new-approach-shows-no-association-between-maternal-milk-fatty-acid-composition-and-childhood-wheeze-or-asthma
#16
Chad A Logan, Stephanie Brandt, Martin Wabitsch, Hermann Brenner, Frank Wiens, Bernd Stahl, Tamás Marosvölgyi, Tamás Decsi, Dietrich Rothenbacher, Jon Genuneit
BACKGROUND: Previous observational studies have implied breast milk fatty acid composition may play a role in development of atopic eczema or atopic sensitization in breastfed infants and toddlers. However, studies investigating associations with wheeze and asthma in later childhood are scarce and did not account for inherent correlation of compositional data. Our aim was to explore the association of maternal milk fatty acid composition with childhood wheezing phenotypes and asthma up to age 13 years using a new statistical approach...
March 17, 2017: Allergy
https://www.readbyqxmd.com/read/28298259/phenotypic-analysis-of-asthma-in-japanese-athletes
#17
Keisuke Tsukioka, Toshiyuki Koya, Hiroshi Ueno, Masachika Hayashi, Takuro Sakagami, Takashi Hasegawa, Masaaki Arakawa, Eiichi Suzuki, Toshiaki Kikuchi
BACKGROUND: Asthma in athlete populations such as Olympic athletes has various pathogeneses. However, few reports are available on the features of asthma in the athlete population in clinical practice. In this study, we focused on classifying asthma in Japanese athlete population. METHODS: We performed a cluster analysis of data from pulmonary function tests and clinical biomarkers before administering inhaled corticosteroids (ICS) therapy in athlete population of individuals diagnosed with asthma (n = 104; male, 76...
March 12, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28293931/investigation-of-the-possible-role-of-the-hippo-yap1-pathway-in-asthma-and-allergy
#18
Lili E Fodor, András Gézsi, Ldikó Ungvári, Agnes F Semsei, Zsófia Gál, Adrienne Nagy, Gabriella Gálffy, Lilla Tamási, András Kiss, Péter Antal, Csaba Szalai
PURPOSE: Several lines of evidence indicate that the Hippo/Yes-associated protein 1 (YAP1) pathways might play a role in the pathogenesis of asthma. To investigate the possible role of the Hippo/YAP1 pathway in the pathogenesis of asthma or its phenotypes. METHODS: The levels of gene expressions of the members of the Hippo/YAP1 were compared. The presence of the proteins of the YAP1 and FRMD6 were analyzed with Western blot in induced sputum of 18 asthmatic subjects and 10 control subjects...
May 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28293414/galectin-3-an-early-predictive-biomarker-of-modulation-of-airway-remodeling-in-patients-with-severe-asthma-treated-with-omalizumab-for-36%C3%A2-months
#19
Anna Maria Riccio, Pierluigi Mauri, Laura De Ferrari, Rossana Rossi, Dario Di Silvestre, Louise Benazzi, Alessandra Chiappori, Roberto Walter Dal Negro, Claudio Micheletto, Giorgio Walter Canonica
BACKGROUND: Bronchial asthma is a heterogeneous disease characterized by three cardinal features: chronic inflammation, variable airflow obstruction, and airway hyperresponsiveness. Asthma has traditionally been defined using nonspecific clinical and physiologic variables that encompass multiple phenotypes and are treated with nonspecific anti-inflammatory therapies. Based on the modulation of airway remodeling after 12 months of anti-immunoglobulin E (IgE) treatment, we identified two phenotypes (omalizumab responder, OR; and non-omalizumab responder, NOR) and performed morphometric analysis of bronchial biopsy specimens...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28287273/novel-monoclonal-treatments-in-severe-asthma
#20
Howraman Meteran, Hanieh Meteran, Celeste Porsbjerg, Vibeke Backer
AIM: To provide a general overview of the current biological treatments and discuss their potential anti-asthmatic effects. DATA SOURCES: We reviewed articles in PubMed found using the search words "Asthma/therapy AND antibodies, monoclonal/therapeutic use AND cytokines." STUDY SELECTIONS: Only articles published in English since 2000 were considered. The search identified 29 studies; 8 additional studies were found by hand search, generating 37 studies...
March 13, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
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