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Acute bronchiolitis

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https://www.readbyqxmd.com/read/29139241/porcine-respiratory-disease-complex-after-the-introduction-of-h1n1-2009-influenza-virus-in-brazil
#1
R R Rech, D Gava, M C Silva, L T Fernandes, V Haach, J R Ciacci-Zanella, R Schaefer
From 2009 to 2015, 74 lungs from suckling (6.8%), nursing (70.3%), fattening (20.3%) pigs and pregnant sows (2.7%) with respiratory signs from pig farms in Southern Brazil were submitted to a diagnostic laboratory for necropsy and/or histologic examination and screening for respiratory agents by RT-qPCR, immunohistochemistry (IHC), virus isolation (VI) and subtyping for influenza A virus (IAV), IHC and nested PCR for Mycoplasma hyopneumoniae (Mhyo), PCR for porcine circovirus 2 (PCV2), RT-qPCR for porcine reproductive and respiratory syndrome virus (PRRSV) and bacterial culture...
November 14, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29132843/-validation-study-of-an-acute-bronchiolitis-severity-scale-to-determine-admission-to-a-paediatric-care-unit
#2
José Miguel Ramos-Fernández, Pedro Piñero-Domínguez, Pilar Abollo-Pérez, David Moreno-Pérez, Ana María Cordón-Martínez, Guillermo Milano-Manso, Antonio Urda-Cardona
INTRODUCTION: At present, there are few validated scoring tests for assessing acute bronchiolitis (AB) severity, and limited information on their test power. The aim of the present study is to evaluate the validity of an acute bronchiolitis severity score (ABSS) to help in deciding PICU admission. PATIENTS AND METHOD: Prospective, descriptive, observational study of previously healthy infants under 1 year of age with AB, where the ABSS was used to compare severity as regards the need for PICU admission...
November 11, 2017: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/29124031/successful-lung-transplantation-in-a-patient-with-myasthenia-gravis
#3
Kangmin Kim, Hyun Joo Lee, Samina Park, Yoohwa Hwang, Young Whan Kim, Young Tae Kim
A 47-year-old man with myasthenia gravis (MG) was admitted for a lung transplant. He had bronchiolitis obliterans after allogeneic hematopoietic stem cell transplantation due to acute myeloid leukemia. MG developed after stem cell transplantation. Bilateral sequential lung transplantations and a total thymectomy were performed. The patient underwent right diaphragmatic plication simultaneously due to preoperatively diagnosed right diaphragmatic paralysis. A tracheostomy was performed and bilevel positive airway pressure (BiPAP) was applied on postoperative days 8 and 9, respectively...
October 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29119851/clinical-characteristics-of-children-infected-with-enterovirus-d68-in-an-outpatient-clinic-and-the-association-with-bronchial-asthma
#4
Tsutomu Itagaki, Yoko Aoki, Yohei Matoba, Shizuka Tanaka, Tatsuya Ikeda, Katsumi Mizuta, Yoko Matsuzaki
BACKGROUND: All reports of increases in severe respiratory disease associated with human enterovirus D68 (EV-D68) are from hospital settings. However, there are few reports describing clinical characteristics in less severely affected populations. METHODS: We conducted a retrospective observational study from January 2010 to December 2015 in Yamagata, Japan. Using regional passive surveillance, 5794 respiratory specimens were collected from children who initially presented to an outpatient clinic with acute respiratory symptoms...
November 9, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/29114843/hypertonic-saline-and-acute-bronchiolitis-reply
#5
François Angoulvant, Karen Milcent, Vincent Gajdos
No abstract text is available yet for this article.
November 6, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29114734/hypertonic-saline-and-acute-bronchiolitis-the-debate-is-still-on
#6
Xavier Tanguay-Rioux, Anali Maneshi, Hajar Al Hoqani
No abstract text is available yet for this article.
November 6, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29110800/long-term-outcomes-and-management-of-lung-transplant-recipients
#7
REVIEW
Joseph Costa, Luke J Benvenuto, Joshua R Sonett
Lung transplantation is an established treatment for patients with end-stage lung disease. Improvements in immunosuppression and therapeutic management of infections have resulted in improved long-term survival and a decline in allograft rejection. Allograft rejection continues to be a serious complication following lung transplantation, thereby leading to acute graft failure and, subsequently, chronic lung allograft dysfunction (CLAD). Bronchiolitis obliterans syndrome (BOS), the most common phenotype of CLAD, is the leading cause of late mortality and morbidity in lung recipients, with 50% having developed BOS within 5 years of lung transplantation...
June 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/29076101/bordetella-pertussis-infection-in-hospitalized-infants-with-acute-bronchiolitis
#8
Şule Gökçe, Zafer Kurugöl, S Şöhret Aydemir, Candan Çiçek, Aslı Aslan, Güldane Koturoğlu
OBJECTIVE: To assess the frequency of B. pertussis infection among young infants hospitalized with acute bronchiolitis and to determine whether B. pertussis infection affects the clinical course of acute bronchiolitis. METHODS: A total of 172 infants <6 months of age hospitalized with acute bronchiolitis were tested for B. pertussis and respiratory viruses with real-time PCR. Cases were divided into 2 groups according to B. pertussis positive or negative. Clinical parameters, clinical severity scores and laboratory characteristics of the pertussis-positive and pertussis-negative cases were compared...
October 27, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29071730/transforming-growth-factor-%C3%AE-enhances-rho-kinase-activity-and-contraction-in-airway-smooth-muscle-via-the-nucleotide-exchange-factor-arhgef1
#9
Yasin Shaifta, Charles E MacKay, Nneka Irechukwu, Katie A O'Brien, David B Wright, Jeremy P T Ward, Greg A Knock
Transforming growth factor-β (TGF-β), RhoA/Rho-kinase and Src-family kinases (SrcFK) have independently been implicated in airway hyper-responsiveness, but how they interact in order to regulate airway smooth muscle contractility is not fully understood. We found that TGF-β pre-treatment enhanced acute contractile responses to bradykinin (BK) in isolated rat bronchioles, and inhibitors of RhoGEFs (Y16) and Rho-kinase (Y27632), but not the SrcFK inhibitor PP2 prevented this enhancement. In cultured human airway smooth muscle cells (hASMC), TGF-β pre-treatment enhanced the protein expression of the Rho guanine nucleotide exchange factor ARHGEF1, MLC20 , MYPT-1 and the actin-severing protein cofilin, but not of RhoA, ROCK2 or c-Src...
October 25, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29065494/human-metapneumovirus-attachment-protein-contributes-to-neutrophil-recruitment-into-the-airways-of-infected-mice
#10
Nagarjuna R Cheemarla, Antonieta Guerrero-Plata
Human Metapneumovirus (HMPV) is a leading respiratory pathogen that causes lower respiratory tract infections worldwide. Acute HMPV infection induces an exacerbated inflammatory neutrophilic response leading to bronchiolitis and pneumonia. However, the mechanism by which the virus regulates neutrophil infiltration into the airways still remains unexplored. In this work, we used an experimental mouse model of HMPV infection to demonstrate that the attachment (G) protein of HMPV contributes to the recruitment of neutrophils into the airways and modulate the production of neutrophil chemoattractants and Type I IFN responses, specifically IFN-α...
October 22, 2017: Viruses
https://www.readbyqxmd.com/read/28992427/effects-of-cannabinoid-receptor-type-2-in-respiratory-syncytial-virus-infection-in-human-subjects-and-mice
#11
Alireza Tahamtan, Yazdan Samieipoor, Fatemeh Sadat Nayeri, Ali Akbar Rahbarimanesh, Anahita Izadi, Ali Rashidi-Nezhad, Masoumeh Tavakoli-Yaraki, Mohammad Farahmand, Louis Bont, Fazel Shokri, Talat Mokhatri-Azad, Vahid Salimi
An accumulating body of evidence suggests that the endocannabinoid system plays a significant role in pathophysiological processes and impacts disease severity. Here we investigate the possible role of a cannabinoid receptor type 2 (CB2) functional variant in determining disease severity and the potential pharmacological therapeutic effects of CB2 activation in viral respiratory infection. The common missense variant (CAA/CGG; Q63R) of the gene-encoding CB2 receptor (CNR2) was evaluated in 90 inpatient and 90 outpatient children with acute respiratory tract infection (ARTI)...
October 9, 2017: Virulence
https://www.readbyqxmd.com/read/28985727/respiratory-mechanics-in-infants-with-severe-bronchiolitis-on-controlled-mechanical-ventilation
#12
Pablo Cruces, Sebastián González-Dambrauskas, Julio Quilodrán, Jorge Valenzuela, Javier Martínez, Natalia Rivero, Pablo Arias, Franco Díaz
BACKGROUND: Analysis of respiratory mechanics during mechanical ventilation (MV) is able to estimate resistive, elastic and inertial components of the working pressure of the respiratory system. Our aim was to discriminate the components of the working pressure of the respiratory system in infants on MV with severe bronchiolitis admitted to two PICU's. METHODS: Infants younger than 1 year old with acute respiratory failure caused by severe bronchiolitis underwent neuromuscular blockade, tracheal intubation and volume controlled MV...
October 6, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28985369/reducing-early-career-general-practitioners-antibiotic-prescribing-for-respiratory-tract-infections-a-pragmatic-prospective-non-randomised-controlled-trial
#13
Parker Magin, Amanda Tapley, Simon Morgan, Joshua S Davis, Patrick McElduff, Lucy Yardley, Kim Henderson, Anthea Dallas, Lawrie McArthur, Katie Mulquiney, Andrew Davey, Paul Little, Neil Spike, Mieke L van Driel
Background: Inappropriate antibiotic prescription and consequent antibacterial resistance is a major threat to healthcare. Objectives: To evaluate the efficacy of a multifaceted intervention in reducing early career general practitioners' (GPs') antibiotic prescribing for upper respiratory tract infections (URTIs) and acute bronchitis/bronchiolitis. Methods: A pragmatic non-randomized trial employing a non-equivalent control group design nested within an existing cohort study of GP registrars' (trainees') clinical practice...
July 17, 2017: Family Practice
https://www.readbyqxmd.com/read/28948867/prevalence-and-genetic-characterisation-of-respiratory-syncytial-viruses-circulating-in-bulgaria-during-the-2014-15-and-2015-16-winter-seasons
#14
Neli Korsun, Svetla Angelova, Iren Tzotcheva, Irina Georgieva, Snezhina Lazova, Snezhana Parina, Ivaylo Alexiev, Penka Perenovska
The respiratory syncytial virus (RSV) is a leading cause of acute respiratory illnesses (ARI) in infants and young children. The objectives of this study were to investigate the RSV circulation among children aged <5 years in Bulgaria, to identify the RSV-A and RSV-B genotypes and to perform an amino acid sequence analysis of second hypervariable region (HVR2) of the G gene. During the 2014/15 and 2015/16 winter seasons, nasopharyngeal specimens of 610 children aged <5 years with ARI were tested using Real Time RT-PCR for influenza viruses, RSV, metapneumovirus, parainfluenza viruses, rhinoviruses and adenoviruses...
September 26, 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28905075/ouabain-attenuates-ovalbumin-induced-airway-inflammation
#15
José Guilherme F M Galvão, Luiz Henrique Agra Cavalcante-Silva, Deyse Cristina M Carvalho, Laércia Karla D P Ferreira, Talissa Mozzini Monteiro, Adriano Francisco Alves, Larissa Adilis M P Ferreira, Francisco Allysson A F Gadelha, Marcia Regina Piuvezam, Sandra Rodrigues-Mascarenhas
PURPOSE: Ouabain, an Na(+)/K(+)-ATPase inhibitor hormone, presents immunomodulatory actions, including anti-inflammatory effect on acute inflammation models. METHODS: In the present study, the effect of ouabain in a model of allergic airway inflammation induced by ovalbumin (OVA) was assessed. RESULTS: Initially, it was observed that ouabain treatment inhibited cellular migration induced by OVA on bronchoalveolar lavage fluid (BALF), mostly granulocytes, without modulating macrophage migration...
December 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28886185/clinical-features-and-seasonality-of-parechovirus-infection-in-an-asian-subtropical-city-hong-kong
#16
Grace P K Chiang, Zigui Chen, Martin C W Chan, Simon H M Lee, Angela K Kwok, Apple C M Yeung, E Anthony S Nelson, Kam Lun Hon, Ting Fan Leung, Paul K S Chan
BACKGROUND: The epidemiology of human parechovirus (HPeV) in Asia remains obscure. We elucidated the prevalence, seasonality, type distribution and clinical presentation of HPeV among children in Hong Kong. METHODS: A 24-month prospective study to detect HPeV in children ≤36 months hospitalized for acute viral illnesses. RESULTS: 2.3% of the 3911 children examined had HPeV infection, with most (87.5%) concentrated in September-January (autumn-winter)...
2017: PloS One
https://www.readbyqxmd.com/read/28863322/il-17-contributes-to-the-pathogenesis-of-obliterative-bronchiolitis-via-regulation-of-m1-macrophages-polarization-in-murine-heterotopic-trachea-transplantation-models
#17
Qingshu Meng, Jie Liu, Fang Lin, Luer Bao, Yuyu Jiang, Liang Zheng, Jinjun Tie, Lin Zhang, Xiaoting Liang, Lu Wei, Yuan Li, Huimin Fan, Xiaohui Zhou
Acute allograft rejection is a principal conundrum in lung obliterative bronchiolitis (OB). Monocytes/macrophages infiltration has been proved to be the main reason for acute rejection. IL-17 contributes to the recruitment and function of macrophages. However, the mechanism of IL-17 underlying OB progression remains elusive. In the present study, we showed that the deficiency of IL-17 attenuated the pathology of murine heterotopic trachea allografts. Compared to WT recipients, IL-17(-/-) mice displayed higher frequency of CD206+ cells and lower ratio of CD86+ cells among F4/80+ macrophages in allografts and spleens on day 7 post heterotopic trachea transplantation...
November 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28861397/modulation-of-host-immunity-by-human-respiratory-syncytial-virus-virulence-factors-a-synergic-inhibition-of-both-innate-and-adaptive-immunity
#18
REVIEW
Gisela Canedo-Marroquín, Orlando Acevedo-Acevedo, Emma Rey-Jurado, Juan M Saavedra, Margarita K Lay, Susan M Bueno, Claudia A Riedel, Alexis M Kalergis
The Human Respiratory Syncytial Virus (hRSV) is a major cause of acute lower respiratory tract infections (ARTIs) and high rates of hospitalizations in children and in the elderly worldwide. Symptoms of hRSV infection include bronchiolitis and pneumonia. The lung pathology observed during hRSV infection is due in part to an exacerbated host immune response, characterized by immune cell infiltration to the lungs. HRSV is an enveloped virus, a member of the Pneumoviridae family, with a non-segmented genome and negative polarity-single RNA that contains 10 genes encoding for 11 proteins...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28860332/negative-pressure-ventilation-in-pediatric-acute-respiratory-failure
#19
Amanda B Hassinger, Ryan K Breuer, Kirsten Nutty, Chang-Xing Ma, Omar S Al Ibrahim
BACKGROUND: The objective of this work was to describe the use of negative-pressure ventilation (NPV) in a heterogeneous critically ill, pediatric population. METHODS: A retrospective chart review was conducted of all patients admitted to a pediatric ICU with acute respiratory failure supported with NPV from January 1, 2012 to May 15, 2015. RESULTS: Two hundred thirty-three subjects at a median age of 15.5 months were supported with NPV for various etiologies, most commonly bronchiolitis (70%)...
August 31, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28859915/viral-bronchiolitis-in-young-infants-new-perspectives-for-management-and-treatment
#20
REVIEW
Mauricio T Caballero, Fernando P Polack, Renato T Stein
OBJECTIVE: The aim of this review was to address advances in management and treatment of acute viral bronchiolitis in infants. SOURCES: A systematic review search was made including all articles published in English between 2010 and 2017, and available in the electronic databases PubMed and Cochrane Central Register of Controlled Trials (CENTRAL) and specialized register of the Acute Respiratory Infections Group (Cochrane review group). The following MESH terms in English were included, using different Boolean operators for the search strategy: "bronchiolitis, viral," "diagnosis," "epidemiology," "etiology," "therapy," "virology," "prevention and control," "respiratory syncytial virus, human...
November 2017: Jornal de Pediatria
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