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Wheezing phenotypes

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https://www.readbyqxmd.com/read/28635659/divergent-how-ige-axis-contributes-to-the-continuum-of-allergic-asthma-and-anti-ige-therapies
#1
REVIEW
Óscar Palomares, Silvia Sánchez-Ramón, Ignacio Dávila, Luis Prieto, Luis Pérez de Llano, Marta Lleonart, Christian Domingo, Antonio Nieto
Asthma is an airway disease characterised by chronic inflammation with intermittent or permanent symptoms including wheezing, shortness of breath, chest tightness, and cough, which vary in terms of their occurrence, frequency, and intensity. The most common associated feature in the airways of patients with asthma is airway inflammation. In recent decades, efforts have been made to characterise the heterogeneous clinical nature of asthma. The interest in improving the definitions of asthma phenotypes and endotypes is growing, although these classifications do not always correlate with prognosis nor are always appropriate therapeutic approaches...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28567533/a-meta-analysis-of-montelukast-for-recurrent-wheeze-in-preschool-children
#2
Hasan R Hussein, Atul Gupta, Simon Broughton, Gary Ruiz, Nicola Brathwaite, Cara J Bossley
There is conflicting evidence of the effectiveness of montelukast in preschool wheeze. A recent Cochrane review focused on its use in viral-induced wheeze; however, such subgroups are unlikely to exist in real life and change with time, recently highlighted in an international consensus report. We have therefore sought to investigate the effectiveness of montelukast in all children with preschool wheeze (viral-induced and multiple-trigger wheeze). The PubMed, Cochrane Library, Ovid Medline and Ovid EMBASE were screened for randomised controlled trials (RCTs), examining the efficacy of montelukast compared with placebo in children with the recurrent preschool wheeze...
June 1, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28558698/role-of-human-rhinovirus-in-triggering-human-airway-epithelial-mesenchymal-transition
#3
Danielle M Minor, David Proud
BACKGROUND: Structural changes in the airways, collectively referred to as airway remodeling, are a characteristic feature of asthma, and are now known to begin in early life. Human rhinovirus (HRV)-induced wheezing illnesses during early life are a potential inciting stimulus for remodeling. Increased deposition of matrix proteins causes thickening of the lamina reticularis, which is a well-recognized component of airway remodeling. Increased matrix protein deposition is believed to be due to the presence of increased numbers of activated mesenchymal cells (fibroblasts/myofibroblasts) in the subepithelial region of asthmatic airways...
May 30, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28441402/sex-discordance-in-asthma-and-wheeze-prevalence-in-two-longitudinal-cohorts
#4
Ryan Arathimos, Raquel Granell, John Henderson, Caroline L Relton, Kate Tilling
Sex discordance in asthma prevalence has been previously reported, with higher prevalence in males before puberty, and in females after puberty; the adolescent "switch". However, cross-sectional studies have suggested a narrowing of this discordance in recent decades. We used a combination of cross-sectional and longitudinal modelling to examine sex differences in asthma, wheeze and longitudinal wheezing phenotypes in two UK birth cohorts, the Avon Longitudinal Study of Parents and Children (ALSPAC; born 1991-92 with data from age 0-18 years) and the Millennium Cohort Study (MCS; born 2000-02 with data from age 3-10 years)...
2017: PloS One
https://www.readbyqxmd.com/read/28431499/asthma-copd-overlap-syndrome-acos-in-primary-care-of-four-latin-america-countries-the-puma-study
#5
Maria Montes de Oca, Maria Victorina Lopez Varela, Maria E Laucho-Contreras, Alejandro Casas, Eduardo Schiavi, Juan Carlos Mora
BACKGROUND: Asthma-COPD overlap syndrome (ACOS) prevalence varies depending on the studied population and definition criteria. The prevalence and clinical characteristics of ACOS in an at-risk COPD primary care population from Latin America was assessed. METHODS: Patients ≥40 years, current/ex-smokers and/or exposed to biomass, attending routine primary care visits completed a questionnaire and performed spirometry. COPD was defined as post-bronchodilator forced expiratory volume in 1 s/forced vital capacity (FEV1/FVC) < 0...
April 21, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28422514/vitamin-c-prevents-offspring-dna-methylation-changes-associated-with-maternal-smoking-in-pregnancy
#6
Lyndsey E Shorey-Kendrick, Cindy T McEvoy, Betsy Ferguson, Julja Burchard, Byung S Park, Lina Gao, Brittany H Vuylsteke, Kristin F Milner, Cynthia D Morris, Eliot R Spindel
BACKGROUND: Infants whose mothers smoked during pregnancy demonstrate lifelong decreases in pulmonary function. DNA methylation changes associated with maternal smoking during pregnancy have been described in placenta and cord blood at delivery, in fetal lung, and in buccal epithelium and blood during childhood. We recently demonstrated in a randomized clinical trial (NCT00632476) that vitamin C supplementation to pregnant smokers can lessen the impact of maternal smoking on offspring pulmonary function and decrease the incidence of wheeze at one year of age...
April 19, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28363401/neutrophilic-steroid-refractory-recurrent-wheeze-and-eosinophilic-steroid-refractory-asthma-in-children
#7
Tamazoust Guiddir, Philippe Saint-Pierre, Elsa Purenne-Denis, Nathalie Lambert, Yacine Laoudi, Rémy Couderc, Rahelé Gouvis-Echraghi, Flore Amat, Jocelyne Just
BACKGROUND: Little is known about inflammatory pathways of severe recurrent wheeze in preschool children and severe asthma in children. OBJECTIVES: The aim of the Severe Asthma Molecular Phenotype cohort was to characterize phenotypes of severe recurrent wheeze and severe asthma during childhood in terms of triggers (allergic or not), involved cells (eosinophil or neutrophil), and corticoid responsiveness. METHODS: Children with moderate-to-severe asthma and preschool children with moderate-to-severe recurrent wheeze were enrolled prospectively...
March 28, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28360114/ror%C3%AE-dependent-type-2-innate-lymphoid-cells-are-required-and-sufficient-for-mucous-metaplasia-in-immature-mice
#8
Charu Rajput, Tracy Cui, Mingyuan Han, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life wheezing-associated respiratory tract infection by rhinovirus (RV) is considered a risk factor for asthma development. We have shown that RV infection of 6-day-old BALB/c mice, but not mature mice, induces an asthmalike phenotype that is associated with an increase in the population of type 2 innate lymphoid cells (ILC2s) and dependent on IL-13 and IL-25. We hypothesize that ILC2s are required and sufficient for development of the asthmalike phenotype in immature mice. Mice were infected with RV1B on day 6 of life and treated with vehicle or a chemical inhibitor of retinoic acid receptor-related orphan receptor-α (RORα), SR3335 (15 mg·kg(-1)·day(-1) ip for 7 days)...
June 1, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28347734/rhinovirus-induced-first-wheezing-episode-predicts-atopic-but-not-non-atopic-asthma-at-school-age
#9
Minna Lukkarinen, Annamari Koistinen, Riitta Turunen, Pasi Lehtinen, Tytti Vuorinen, Tuomas Jartti
BACKGROUND: Persistent childhood asthma is mainly atopy-driven. However, limited data exist on the risk factors for childhood asthma phenotypes. OBJECTIVE: To identify risk factors at the first severe wheezing episode for the current asthma 7 years later, and separately for atopic and non-atopic asthma. METHODS: One hundred and twenty-seven steroid-naive children with the first severe wheezing episode (90% hospitalized/10% emergency room treated) were followed for 7 years...
March 24, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28333691/asthma-prevalence-and-severity-in-low-resource-communities
#10
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...
June 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28318885/genetic-association-of-the-functional-cdhr3-genotype-with-early-onset-adult-asthma-in-japanese-populations
#11
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/28306160/new-approach-shows-no-association-between-maternal-milk-fatty-acid-composition-and-childhood-wheeze-or-asthma
#12
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/28146340/serum-clara-cell-protein-and-atopic-phenotype-in-children-up-to-2%C3%A2-years-of-age
#13
Nevenka Ilic, Natasa Mihailovic
BACKGROUND: Low value of serum Clara cell protein (CC16) is associated with bronchial hyperreactivity in children. OBJECTIVE: To evaluate the serum CC16 in relation to atopy and previously manifested LRTD. METHODS: In the population of 163 healthy 5- to 24-month-old children, atopy was determined by Phadiatop-infant (serum-specific IgE≥0.35 kUA/L), serum CC16 by ELISA, while data on previously manifested low respiratory tract diseases (LRTD) were collected from the Health Care Center database...
February 1, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28118241/management-of-preschool-recurrent-wheezing-and-asthma-a-phenotype-based-approach
#14
Avraham Beigelman, Leonard B Bacharier
PURPOSE OF REVIEW: The purpose of this review is to summarize the recent evidence on the management of preschool children with wheezing and asthma, and to propose a phenotype-based approach to the management of these children. RECENT FINDINGS: Recent studies have begun to identify populations of preschool children that are likely to benefit from inhaled corticosteroids (ICS) therapy and defined ICS regimens: daily ICS in preschool children with persistent asthma, and pre-emptive high-dose intermittent ICS among preschool children with intermittent disease reduce the risk of exacerbation...
April 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28092287/current-and-future-management-of-the-young-child-with-early-onset-wheezing
#15
Allison J Burbank, Stanley J Szefler
PURPOSE OF REVIEW: In this review, we discuss current thinking in relation to available guidelines for the care of preschool-aged children with recurrent wheezing, while highlighting the gaps in our knowledge and discussing changes that could occur over the next 5 years. RECENT FINDINGS: The Asthma Predictive Index as well as allergen-specific IgE, peripheral eosinophil count and exhaled nitric oxide are perhaps underutilized sources of information that can assist in predicting progression to asthma and response to therapies...
April 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28029926/fish-oil-derived-fatty-acids-in-pregnancy-and-wheeze-and-asthma-in-offspring
#16
RANDOMIZED CONTROLLED TRIAL
Hans Bisgaard, Jakob Stokholm, Bo L Chawes, Nadja H Vissing, Elin Bjarnadóttir, Ann-Marie M Schoos, Helene M Wolsk, Tine M Pedersen, Rebecca K Vinding, Sunna Thorsteinsdóttir, Nilofar V Følsgaard, Nadia R Fink, Jonathan Thorsen, Anders G Pedersen, Johannes Waage, Morten A Rasmussen, Ken D Stark, Sjurdur F Olsen, Klaus Bønnelykke
BACKGROUND: Reduced intake of n-3 long-chain polyunsaturated fatty acids (LCPUFAs) may be a contributing factor to the increasing prevalence of wheezing disorders. We assessed the effect of supplementation with n-3 LCPUFAs in pregnant women on the risk of persistent wheeze and asthma in their offspring. METHODS: We randomly assigned 736 pregnant women at 24 weeks of gestation to receive 2.4 g of n-3 LCPUFA (fish oil) or placebo (olive oil) per day. Their children formed the Copenhagen Prospective Studies on Asthma in Childhood2010 (COPSAC2010) cohort and were followed prospectively with extensive clinical phenotyping...
December 29, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27977294/house-dust-endotoxin-levels-are-associated-with-adult-asthma-in-a-u-s-farming-population
#17
Megan Ulmer Carnes, Jane A Hoppin, Nervana Metwali, Annah B Wyss, John L Hankinson, Elizabeth Long O'Connell, Marie Richards, Stuart Long, Laura E Beane Freeman, Dale P Sandler, Paul K Henneberger, Christie Barker-Cummings, David M Umbach, Peter S Thorne, Stephanie J London
RATIONALE: Endotoxin initiates a proinflammatory response from the innate immune system. Studies in children suggest that endotoxin exposure from house dust may be an important risk factor for asthma, but few studies have been conducted in adult populations. OBJECTIVES: To investigate the association of house dust endotoxin levels with asthma and related phenotypes (wheeze, atopy, and pulmonary function) in a large U.S. farming population. METHODS: Dust was collected from the bedrooms (n = 2,485) of participants enrolled in a case-control study of current asthma (927 cases) nested within the Agricultural Health Study...
March 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27799959/predictors-of-allergen-sensitization-in-singapore-children-from-birth-to-3%C3%A2-years
#18
Evelyn Xiu Ling Loo, Jordan Zheng Ting Sim, Anne Goh, Oon Hoe Teoh, Yiong Huak Chan, Seang Mei Saw, Kenneth Kwek, Peter D Gluckman, Keith M Godfrey, Hugo Van Bever, Yap Seng Chong, Bee Wah Lee, Michael S Kramer, Lynette Pei-Chi Shek
BACKGROUND: Immune responses in allergic diseases begin with allergen sensitization, which usually occurs in childhood. Allergen sensitization involves a complex interplay of genetic and environmental factors, and sensitization patterns may change with age. OBJECTIVE: To determine the predictors of allergen sensitization in the first 3 years of life in the growing up in Singapore towards healthy outcomes (GUSTO) prospective birth cohort study. METHODS: Interviewers collected information on demographics, family history of allergy, social and lifestyle factors, and the child's health...
2016: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/27726947/vitamin-d-over-the-first-decade-and-susceptibility-to-childhood-allergy-and-asthma
#19
Elysia M Hollams, Shu Mei Teo, Merci Kusel, Barbara J Holt, Kathryn E Holt, Michael Inouye, Nicholas H De Klerk, Guicheng Zhang, Peter D Sly, Prue H Hart, Patrick G Holt
BACKGROUND: Vitamin D (25(OH)D) deficiency has been implicated as a possible risk factor for asthma development, but studies at selected time points measuring 25(OH)D levels during childhood have yielded conflicting findings. Prospective studies tracking 25(OH)D levels during the initiation phase of asthma in early childhood have not been reported. OBJECTIVE: We sought to elucidate relationships between 25(OH)D levels from birth to age 10 years and susceptibility to allergic sensitization, respiratory tract infections, and asthma...
October 7, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27717396/viable-phenotype-of-ilneb-syndrome-without-nephrotic-impairment-in-siblings-heterozygous-for-unreported-integrin-alpha3-mutations
#20
Elisa Adele Colombo, Luigina Spaccini, Ludovica Volpi, Gloria Negri, Davide Cittaro, Dejan Lazarevic, Salvatore Zirpoli, Andrea Farolfi, Cristina Gervasini, Maria Vittoria Cubellis, Lidia Larizza
BACKGROUND: Integrin α3 (ITGA3) gene mutations are associated with Interstitial Lung disease, Nephrotic syndrome and Epidermolysis bullosa (ILNEB syndrome). To date only six patients are reported: all carried homozygous ITGA3 mutations and presented a dramatically severe phenotype leading to death before age 2 years, from multi-organ failure due to interstitial lung disease and congenital nephrotic syndrome. The involvement of skin and cutaneous adnexa was variable with sparse hair and nail dysplasia combined or not to skin lesions ranging from skin fragility to epidermolysis bullosa-like blistering...
October 7, 2016: Orphanet Journal of Rare Diseases
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