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viral bronchiolitis

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https://www.readbyqxmd.com/read/29775038/postinfectious-bronchiolitis-obliterans
#1
(no author information available yet)
La bronquiolitis obliterante es una enfermedad pulmonar crónica infrecuente y grave producto de una lesión del tracto respiratorio inferior. En nuestro país, es más frecuente observarla secundaria a una lesión viral grave, en especial, por adenovirus. La bronquiolitis obliterante se caracteriza por la oclusión parcial o total del lumen de los bronquiolos respiratorios y terminales por tejido inflamatorio y fibrosis, que produce la obstrucción crónica de la vía aérea. Este consenso discute el estado actual del conocimiento en las diferentes áreas de la bronquiolitis obliterante secundaria a una lesión infecciosa...
June 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29754840/-respiratory-physiotherapy-in-acute-viral-bronchiolitis-in-the-newborn-pro-con-arguments
#2
REVIEW
G Postiaux, P Maffei, J-C Villiot-Danger, J-C Dubus
This article reports an exchange of unbiased arguments between Mr Guy Postiaux speaking in favour of respiratory physiotherapy in acute viral bronchiolitis in the newborn and Prof. Jean-Christoph Dubus arguing against. A review of the literature suggests that traditional methods of physiotherapy should be abandoned because they are not validated and because they have harmful side effects. The latest Cochrane revue (2016) suggests the use of slow expiration techniques that have some validated elements and cause no harmful side effects...
May 10, 2018: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/29752289/interventions-to-reduce-over-utilized-tests-and-treatments-in-bronchiolitis
#3
Amy Tyler, Paige Krack, Leigh Anne Bakel, Kimberly O'Hara, Douglas Scudamore, Irina Topoz, Julia Freeman, Angela Moss, Renee Allen, Angela Swanson, Lalit Bajaj
OBJECTIVES: The American Academy of Pediatrics published bronchiolitis clinical practice guidelines in 2014 recommending against the routine use of bronchodilators, chest radiographs, or respiratory viral testing in children with a clinical diagnosis of bronchiolitis. Our aim in this project was to align care with the American Academy of Pediatrics clinical practice guidelines by decreasing the overuse of these interventions. METHODS: This study included patients who were admitted to a non-ICU setting with a primary or secondary diagnosis of bronchiolitis...
May 11, 2018: Pediatrics
https://www.readbyqxmd.com/read/29751747/a-fatal-case-associated-with-respiratory-syncytial-virus-infection-in-a-young-child
#4
Lili Xu, Hengmiao Gao, Jiansheng Zeng, Jun Liu, Cong Lu, Xiaolei Guan, Suyun Qian, Zhengde Xie
BACKGROUND: Respiratory syncytial virus (RSV) is the most common viral cause of pediatric bronchiolitis and pneumonia worldwide. Risk factors for high mortality and prolonged morbidity after RSV infection include premature birth, bronchopulmonary dysplasia, congenital heart disease, and Down syndrome. However, some previously healthy, full-term children who are infected with RSV also require hospitalization and even experience severe sequelae or death. CASE PRESENTATION: In this report, we present the case of an RSV-associated death of a child who was born at full-term and developed normally up to the age of 2 years old...
May 11, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29750779/should-systemic-corticosteroids-be-used-for-bronchiolitis
#5
Gonzalo Alarcón-Andrade, Lorena Cifuentes
INTRODUCTION: Bronchiolitis is an acute small airways inflammation mainly caused by a viral infection. It is frequent in children under two years of age, particularly under 12 months. The use of systemic corticosteroids has been proposed for bronchiolitis, especially for severely ill patients. However, its efficacy is still controversial. METHODS: To answer this question we gathered information using Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others...
May 7, 2018: Medwave
https://www.readbyqxmd.com/read/29744035/human-metapneumovirus-what-we-know-now
#6
REVIEW
Nazly Shafagati, John Williams
Human metapneumovirus (HMPV) is a leading cause of acute respiratory infection, particularly in children, immunocompromised patients, and the elderly. HMPV, which is closely related to avian metapneumovirus subtype C, has circulated for at least 65 years, and nearly every child will be infected with HMPV by the age of 5. However, immunity is incomplete, and re-infections occur throughout adult life. Symptoms are similar to those of other respiratory viral infections, ranging from mild (cough, rhinorrhea, and fever) to more severe (bronchiolitis and pneumonia)...
2018: F1000Research
https://www.readbyqxmd.com/read/29743346/pgd2-dp2-receptor-activation-promotes-severe-viral-bronchiolitis-by-suppressing-ifn-%C3%AE-production
#7
Rhiannon B Werder, Jason P Lynch, Jennifer C Simpson, Vivian Zhang, Nick H Hodge, Matthew Poh, Elizabeth Forbes-Blom, Christina Kulis, Mark L Smythe, John W Upham, Kirsten Spann, Mark L Everard, Simon Phipps
Prostaglandin D2 (PGD2) signals through PGD2 receptor 2 (DP2, also known as CRTH2) on type 2 effector cells to promote asthma pathogenesis; however, little is known about its role during respiratory syncytial virus (RSV) bronchiolitis, a major risk factor for asthma development. We show that RSV infection up-regulated hematopoietic prostaglandin D synthase expression and increased PGD2 release by cultured human primary airway epithelial cells (AECs). Moreover, PGD2 production was elevated in nasopharyngeal samples from young infants hospitalized with RSV bronchiolitis compared to healthy controls...
May 9, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29704736/viral-bronchiolitis-management-in-hospitals-in-the-uk
#8
Elliott J Carande, Eva P Galiza, Alecia Nickless, Andrew J Pollard, Simon B Drysdale
BACKGROUND: Viral bronchiolitis is the leading cause of hospitalisation in infants less than a year old. The United Kingdom (UK) National Institute for Health and Care Excellence (NICE) published a guideline for the management of viral bronchiolitis in June 2015. OBJECTIVES: This study aimed to prospectively survey the management of viral bronchiolitis in hospital Trusts in the UK to provide a baseline of practice prior to the publication of the 2015 NICE bronchiolitis guideline against which future practice can be assessed...
April 18, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29704475/chronic-cough-related-to-acute-viral-bronchiolitis-in-children-chest-expert-panel-report
#9
Anne B Chang, John J Oppenheimer, Bruce K Rubin, Miles Weinberger, Richard S Irwin
BACKGROUND: Acute bronchiolitis is common in young children and some children develop chronic cough after their bronchiolitis. We thus undertook systematic reviews based on key questions (KQs) using the PICO format. The KQs were: Among children with chronic cough (>4 weeks) after acute viral bronchiolitis, how effective are the following interventions in improving the resolution of cough?: (1) Antibiotics. If so what type and for how long? (2) Asthma medications (inhaled steroids, beta2 agonist, montelukast) and; (3) Inhaled osmotic agents like hypertonic saline? METHODS: We used the CHEST expert cough panel's protocol and the American College of Chest Physicians (CHEST) methodological guidelines and GRADE framework...
April 25, 2018: Chest
https://www.readbyqxmd.com/read/29696025/adrenergic-signaling-at-the-interface-of-allergic-asthma-and-viral-infections
#10
Didem Ağaç, Michelle A Gill, J David Farrar
Upper respiratory viral infections are a major etiologic instigator of allergic asthma, and they drive severe exacerbations of allergic inflammation in the lower airways of asthma sufferers. Rhinovirus (RV), in particular, is the main viral instigator of these pathologies. Asthma exacerbations due to RV infections are the most frequent reasons for hospitalization and account for the majority of morbidity and mortality in asthma patients. In both critical care and disease control, long- and short-acting β2-agonists are the first line of therapeutic intervention, which are used to restore airway function by promoting smooth muscle cell relaxation in bronchioles...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29694995/respiratory-support-in-bronchiolitis-trial-evidence
#11
Steve Cunningham
Acute viral lower respiratory tract infection is frequently associated with hypoxemia and respiratory distress, sometimes progressing to hypercarbia and respiratory failure. In recent years, trials have assessed the effects of oxygen supplementation and respiratory support with high-flow oxygen therapy. An oxygen saturation target of 90% is as safe and clinically effective as 94% in infants with bronchiolitis. Trials of high-flow humidified oxygen have demonstrated safety, but as yet poorly demarcated an appropriate place for use within the clinical course of the disease...
May 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/29688024/reduced-nasal-viral-load-and-ifn-responses-in-infants-with-rsv-bronchiolitis-and-respiratory-failure
#12
Ryan S Thwaites, Matthew Coates, Kazuhiro Ito, Marwa Ghazaly, Calandra Feather, Farhana Abdulla, Tanushree Tunstall, Pooja Jain, Lindsey Cass, Garth Rapeport, Trevor T Hansel, Simon Nadel, Peter J Openshaw
RATIONALE: Respiratory syncytial virus (RSV) bronchiolitis is a major cause of morbidity and mortality in infancy. Severe disease is thought to result from uncontrolled viral replication, an excessive immune response, or both. OBJECTIVES: To determine RSV load and immune mediator levels in nasal mucosal lining fluid by serial sampling of nasal fluids from cases of moderate and severe bronchiolitis over the course of infection. METHODS: Infants with viral bronchiolitis necessitating admission (n=55) were recruited from a paediatric centre during 2016/17...
April 24, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29686673/the-cd8-t-cell-response-to-respiratory-virus-infections
#13
REVIEW
Megan E Schmidt, Steven M Varga
Humans are highly susceptible to infection with respiratory viruses including respiratory syncytial virus (RSV), influenza virus, human metapneumovirus, rhinovirus, coronavirus, and parainfluenza virus. While some viruses simply cause symptoms of the common cold, many respiratory viruses induce severe bronchiolitis, pneumonia, and even death following infection. Despite the immense clinical burden, the majority of the most common pulmonary viruses lack long-lasting efficacious vaccines. Nearly all current vaccination strategies are designed to elicit broadly neutralizing antibodies, which prevent severe disease following a subsequent infection...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29683419/haemagglutinin-neuraminidase-from-hpiv3-mediates-human-nk-regulation-of-t-cell-proliferation-via-nkp44-and-nkp46
#14
Samantha McQuaid, Sinead Loughran, Patrick Power, Paula Maguire, Dermot Walls, Maria Grazia Cusi, Claes Orvell, Patricia Johnson
HPIV3 is a respiratory virus causing airway diseases, including pneumonia, croup, and bronchiolitis, during infancy and childhood. Currently there is no effective vaccine or anti-viral therapy for this virus. Studies have suggested that poor T cell proliferation following HPIV3 infection is responsible for impaired immunological memory associated with this virus. We have previously demonstrated that NK cells mediate regulation of T cell proliferation during HPIV3 infection. Here we add to these studies by demonstrating that the regulation of T cell proliferation during HPIV3 infection is mediated via NK receptors NKp44 and NKp46 and involves the surface glycoprotein haemagglutinin-neuraminidase but not the fusion protein of the virus...
April 23, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29677180/do-inhaled-corticosteroids-have-a-role-for-bronchiolitis
#15
Gonzalo Alarcón-Andrade, Lorena Cifuentes
INTRODUCTION: Bronchiolitis consists of an acute small airways inflammation secondary to a viral infection and is a frequent pathology among children under 2 years. The use of inhaled corticosteroids during bronchiolitis has been proposed to reduce recurrent wheeze or asthma, however there is controversy about it. METHODS: To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others...
April 17, 2018: Medwave
https://www.readbyqxmd.com/read/29665312/interleukin-13-associates-with-life-threatening-rhinovirus-infections-in-infants-and-young-children
#16
Mauricio T Caballero, Diego R Hijano, Patricio L Acosta, Cecilia G Mateu, Débora N Marcone, Jodell E Linder, Laura B Talarico, John M Elder, Marcela Echavarria, Eva Kathryn Miller, Fernando P Polack
OBJECTIVE: Delineate risk factors associated with severe hypoxemia (O2 sat ≤87%) in infants and children younger than 2 years hospitalized with single pathogen HRV infection. STUDY DESIGN: Prospective study in a yearly catchment population of 56 560 children <2 years old between 2011 and 2013 in Argentina. All children with respiratory signs and O2 sat <93% on admission were included. HRV infections were identified by reverse transcriptase-polymerase chain reaction...
April 17, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29602647/bronchiectasis-chronic-suppurative-lung-disease-and-protracted-bacterial-bronchitis
#17
Dan T Benscoter
Bronchiectasis is a structural airway disease characterized by dilated bronchi and bronchioles due to severe or recurrent lower airways inflammation. Bronchiectasis can occur as a result of chronic pulmonary aspiration. Bronchiectasis may also be associated with a wide variety of systemic diseases, which should be considered in the differential diagnosis. Children with bronchiectasis typically have a chronic or recurrent productive cough and carry a significant burden of disease with a considerable impact on quality of life...
March 27, 2018: Current Problems in Pediatric and Adolescent Health Care
https://www.readbyqxmd.com/read/29599087/a-novel-method-for-strict-intranasal-delivery-of-non-replicating-rsv-vaccines-in-cotton-rats-and-non-human-primates
#18
Michael P Citron, Manishkumar Patel, Mona Purcell, Shu-An Lin, Daniel J Rubins, Paul McQuade, Cheryl Callahan, Alexa Gleason, Ioan Petrescu, Walter Knapp, Chinedu Orekie, Sai Chamarthy, Zhiyun Wen, Sinoeun Touch, Matthew Pine, Jane Fontenot, Cameron Douglas, Xiaoping Liang, Amy S Espeseth
Respiratory syncytial virus (RSV) is the most common viral cause of bronchiolitis and pneumonia in children twelve months of age or younger and a significant cause of lower respiratory disease in older adults. As various clinical and preclinical candidates advance, cotton rats (Sigmodon hispidus) and non-human primates (NHP) continue to play a valuable role in RSV vaccine development, since both animals are semi-permissive to human RSV (HRSV). However, appropriate utilization of the models is critical to avoid mis-interpretation of the preclinical findings...
March 26, 2018: Vaccine
https://www.readbyqxmd.com/read/29593031/central-role-of-the-nf%C3%AE%C2%BAb-pathway-in-the-scgb1a1-expressing-epithelium-in-mediating-respiratory-syncytial-virus-induced-airway-inflammation
#19
Bing Tian, Jun Yang, Yingxin Zhao, Teodora Ivanciuc, Hong Sun, Maki Wakamiya, Roberto P Garofalo, Allan R Brasier
Lower respiratory tract infection with respiratory syncytial virus (RSV) produces profound inflammation. Despite an understanding of the role of adaptive immunity in RSV infection, the identity of the major sentinel cells initially triggering inflammation is controversial. Here we evaluate the role of nonciliated secretoglobin ( Scgb1a1 )-expressing bronchiolar epithelial cells in RSV infection. Knock-in mice expressing a tamoxifen (TMX)-inducible Cre recombinase (CreERTM ) from the Scgb1a1 locus were crossed with mice that harbor a RelA conditional allele ( RelAfl ), with loxP sites flanking exons 5-8 of the Rel homology domain...
March 28, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29580908/-extracorporeal-life-support-and-heart-lung-transplant-in-children
#20
Sébastien Hascoet, Angèle Boet, Karine Nubret, Marc Lilot, Séverine Feuillet, Nadir Benbrik, Julien Guihaire, Emmanuel Le Bret, Elie Fadel, Virginie Fouilloux, Pascal Amedro, Lucile Houyel, Bernard Kreitmann
Extracorporeal life support and heart and/or lung transplant are the last resort in children with end-stage cardiac and/or pulmonary failure and short-term life threaten. Currently, circulatory support is used as a bridge to recovery or as a bridge to transplant but not as a destination therapy. The Excor Berlin Heart is the long-lasting external pneumatic ventricular assist system that is currently available from infancy to adulthood. Long-term prognosis after pediatric cardiac and/or pulmonary transplant is conditioned by the occurrence of graft failure, coronary disease of the cardiac graft, viral infections and bronchiolitis obliterans of the pulmonary graft, the incidence of which increase with time...
March 23, 2018: La Presse Médicale
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