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Leszek Kubin
Upper airway muscles subserve many essential for survival orofacial behaviors, including their important role as accessory respiratory muscles. In the face of certain predisposition of craniofacial anatomy, both tonic and phasic inspiratory activation of upper airway muscles is necessary to protect the upper airway against collapse. This protective action is adequate during wakefulness, but fails during sleep which results in recurrent episodes of hypopneas and apneas, a condition known as the obstructive sleep apnea syndrome (OSA)...
September 15, 2016: Comprehensive Physiology
Amit Mukerji, Prakesh S Shah, Sandesh Shivananda, Wendy Yee, Brooke Read, John Minski, Ruben Alvaro, Christoph Fusch
AIM: To evaluate practice variation with respect to non-invasive respiratory support (NRS) use across Canadian neonatal intensive care units (NICUs). METHODS: A web-based survey was sent to all site investigators of the 30 level 3 NICUs participating in the Canadian Neonatal Network. The survey inquired about the use of five commonly described NRS modes. In addition, the presence and adherence to local guidelines were ascertained. Descriptive analyses were performed to identify variations in practice...
October 26, 2016: Acta Paediatrica
Marlon E F Wilsterman, Pauline de Jager, Robert Blokpoel, Inez Frerichs, Sandra K Dijkstra, Marcel J I J Albers, Johannes G M Burgerhof, Dick G Markhorst, Martin C J Kneyber
BACKGROUND: Neuromuscular blockade (NMB) has been shown to improve outcome in acute respiratory distress syndrome (ARDS) in adults, challenging maintaining spontaneous breathing when there is severe lung injury. We tested in a prospective physiological study the hypothesis that continuous administration of NMB agents in mechanically ventilated children with severe acute hypoxemic respiratory failure (AHRF) improves the oxygenation index without a redistribution of tidal volume V T toward non-dependent lung zones...
December 2016: Annals of Intensive Care
Michael P Platt, Christopher D Brook, Jacob Kuperstock, John H Krouse
IgE-mediated allergy plays a well-established role in both nasal and pulmonary diseases due to the common epithelium and shared mediator responses of the upper and lower airways. This "unified airway" concept has also been described in other sites within the head and neck that contain similar respiratory mucosa: the middle ear and the larynx. This review will highlight the data suggesting a role for IgE-mediated allergic disease in chronic laryngopharyngeal and middle ear disease and the role for allergy testing to aid in diagnosis and treatment of these disorders...
October 2016: Current Allergy and Asthma Reports
Julio Jiménez, Jute Richter, Taro Nagatomo, Thomas Salaets, Rozenn Quarck, Allard Wagennar, Hongmei Wang, Jeroen Vanoirbeek, Jan Deprest, Jaan Toelen
Bronchopulmonary dysplasia (BPD) is caused by preterm neonatal lung injury and results in oxygen dependency and pulmonary hypertension. Current clinical management fails to reduce the incidence of BPD, which calls for novel therapies. Fetal rabbits have a lung development that mimics humans and can be used as a translational model to test novel treatment options. In preterm rabbits, exposure to hyperoxia leads to parenchymal changes, yet vascular damage has not been studied in this model. In this study we document the early functional and structural changes of the lung vasculature in preterm rabbits that are induced by hyperoxia after birth...
October 24, 2016: International Journal of Molecular Sciences
Adria Perez-Rovira, Wieying Kuo, Jens Petersen, Harm A W M Tiddens, Marleen de Bruijne
PURPOSE: Bronchiectasis and airway wall thickening are commonly assessed in computed tomography (CT) by comparing the airway size with the size of the accompanying artery. Thus, in order to automate the quantification of bronchiectasis and wall thickening following a similar principle, there is a need for methods that automatically segment the airway and vascular trees, measure their size, and pair each airway branch with its accompanying artery. METHODS: This paper combines and extends existing techniques to present a fully automated pipeline that, given a thoracic chest CT, segments, measures, and pairs airway branches with the accompanying artery, then quantifies airway wall thickening and bronchiectasis by measuring the wall-artery ratio (WAR) and lumen and outer wall airway-artery ratio (AAR)...
October 2016: Medical Physics
Wen Gu, Rong Cui, Tao Ding, Xiaoming Li, Juan Peng, Weiguo Xu, Fengfeng Han, Xuejun Guo
BACKGROUND AND OBJECTIVE: Statins have been widely used in inflammatory diseases including asthma, because of their anti-inflammatory and immunomodulatory properties. It has been shown that simvastatin induces autophagy and cell death in some circumstances. However, the possible cross-talk between simvastatin and autophagic processes in lung disease is largely unknown. Thus, we investigated the impact of simvastatin on airway inflammation and airway remodelling and the possible relationship of these processes to a simvastatin-induced autophagic pathway in mouse models of asthma...
October 26, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
Alexandre de Paula Rogerio, Troy Carlo, Sergio R Ambrosio
No abstract text is available yet for this article.
2016: Evidence-based Complementary and Alternative Medicine: ECAM
José Javier Jareño-Esteban, M Ángeles Muñoz-Lucas, Óscar Gómez-Martín, Sergio Utrilla-Trigo, Carlos Gutiérrez-Ortega, Antonio Aguilar-Ros, Luis Collado-Yurrita, Luis Miguel Callol-Sánchez
INTRODUCTION: A major risk factor for chronic obstructive pulmonary disease (COPD) is tobacco smoke, which generates oxidative stress in airways, resulting in the production of volatile organic compounds (VOC). The purpose of this study was to identify VOCs in exhaled breath and to determine their possible use as disease biomarkers. METHOD: Exhaled breath from 100 healthy volunteers, divided into 3groups (never smokers, former smokers and active smokers) and exhaled breath from 57 COPD patients were analyzed...
October 22, 2016: Archivos de Bronconeumología
Srilata Puru Naik, Mahesh P A, Jayaraj B S, SubbaRao V Madhunapantula, Sareh Raeiszadeh Jahromi, Manish Kumar Yadav
INTRODUCTION: Even though IL-6 and MMP-9 are associated with airway inflammation in asthma, there is paucity of data in Indian population. OBJECTIVE: To determine the levels of IL-6 and MMP-9 in the serum of patients suffering from asthma, and correlate with (a) disease severity, as per GINA guidelines; (b) clinical phenotypes; and (c) response to treatment. METHODOLOGY: The levels of IL-6 and MMP-9 were compared between moderate persistent asthma (n = 25), severe persistent asthma (n = 25) and normal controls (n = 30)...
October 26, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
Tsutomu Tamada, Hisatoshi Sugiura, Tsuneyuki Takahashi, Kazuto Matsunaga, Keiji Kimura, Uichiro Katsumata, Ken Ohta, Masakazu Ichinose
BACKGROUND: Asthma patients with fixed airflow limitation (FL) are theoretically classified into two phenotypes, that is, coexisting chronic obstructive pulmonary disease (COPD) and asthmatic airway remodeling. However, the precise percentages of such patients are not known. OBJECTIVE: To assess the prevalence of patients with both FL and COPD components in elderly asthma. METHODS: We evaluated patients by lung diffusion impairment and emphysematous findings in high-resolution computed tomography (HRCT) as candidates for COPD components, as a multicenter, cross-sectional survey...
October 26, 2016: Journal of Asthma: Official Journal of the Association for the Care of Asthma
Deepthi Alapati, Edward E Morrisey
While our understanding of the genetics and pathology of congenital lung diseases such as surfactant protein deficiency, cystic fibrosis and alpha 1 antitrypsin deficiency is extensive, treatment options are lacking. Since the lung is a barrier organ in direct communication with the external environment, targeted delivery of gene corrective technologies to the respiratory system via intra-tracheal or intranasal routes is an attractive option for therapy. CRISPR/Cas9 gene editing technology is a promising approach to repair or inactivate disease causing mutations...
October 25, 2016: American Journal of Respiratory Cell and Molecular Biology
Valentina Gallo, F Nicole Dijk, John W Holloway, Susan M Ring, Gerard H Koppelman, Dirkje S Postma, David P Strachan, Raquel Granell, Johan C de Jongste, Vincent W V Jaddoe, Herman T den Dekker, Liesbeth Duijts, A John Henderson, Seif O Shaheen
BACKGROUND: Animal data have suggested that the transient receptor potential ankyrin-1 (TRPA1) ion channel plays a key role in promoting airway inflammation in asthma and may mediate effects of paracetamol on asthma, yet confirmatory human data are lacking. To study associations of TRPA1 gene variants with childhood asthma and total IgE concentration, and interactions between TRPA1 and prenatal paracetamol exposure on these outcomes. METHODS: We analysed associations between 31 TRPA1 single nucleotide polymorphisms (SNPs) and current doctor-diagnosed asthma and total IgE concentration at 7...
October 25, 2016: Pediatric Allergy and Immunology
Gen Kano, Hisashi Tsujii, Kazuhiko Takeuchi, Kaname Nakatani, Makoto Ikejiri, Satoru Ogawa, Hisami Kubo, Mizuho Nagao, Takao Fujisawa
Primary ciliary dyskinesia (PCD) is a rare genetic disorder caused by structural and/or functional impairment of cilia throughout the whole body. Early diagnosis of PCD is important for the prevention of long‑term sequelae, however early diagnosis is a challenge due to the phenotypic heterogeneity of PCD. In the current study, the patient with PCD was diagnosed at nine years old following several efforts to control intractable airway symptoms. The patient experienced a chronic productive cough beginning in early childhood and had multiple episodes of pneumonia and otitis media with effusion and sinusitis...
October 21, 2016: Molecular Medicine Reports
Moyu Ming, Zhixi Luo, Shengqiu Lv, Chaoqian Li
The present study aimed to investigate whether inhalation of inactivated‑Mycobacterium phlei could prevent airway hyperresponsiveness and airway eosinophilia. A total of 24 male Balb/c mice were randomly divided into three groups: Normal control group (group A), asthma model group (group B) and the intervention group (group C), (8 mice/group). Group A mice were sensitized and with challenged saline and group B with ovalbumin (OVA). Group C mice were administered with aerosol Mycobacterium phlei once daily prior to the allergen challenge...
October 19, 2016: Molecular Medicine Reports
Shuichi Kaneyama, Masatoshi Sumi, Masato Takabatake, Koichi Kasahara, Aritetsu Kanemura, Hiroaki Hirata, Bruce V Darden
STUDY DESIGN: Clinical case series and risk factor analysis of dysphagia after occipitospinal fusion (OSF). OBJECTIVE: To develop new criteria to avoid postoperative dysphagia by analyzing the relationship among the craniocervical alignment, the oropharyngeal space and the incidence of dysphagia after OSF. SUMMARY OF BACKGROUND DATA: Craniocervical malalignment after OSF is considered to be one of the primary triggers of postoperative dysphagia...
October 24, 2016: Spine
S Sindhu
Stripped of any sense of comfort or dignity on that hospital bed, my 84-year-old father, my best friend, was enduring raw, intrusive medical procedures against his own wish; defenseless, vulnerable, agonized. A feeding tube went in through his nose; catheter tubes drained urine out of his bladder; a suction pump drew out fluid from his airway. A needle jammed into the central line, making it impossible for him to turn his head. Dialysis took over the job of his kidneys. But no painkillers were given for fear his weak heart could not take more chemicals...
October 25, 2016: Journal of Pain & Palliative Care Pharmacotherapy
Hideaki Kouzaki, Koji Matsumoto, Hirotaka Kikuoka, Tomohisa Kato, Ichiro Tojima, Shino Shimizu, Hirohito Kita, Takeshi Shimizu
RATIONALE: Cystatin A and SPINK5 are endogenous protease inhibitors (EPIs) that may play key roles in epithelial barrier function. OBJECTIVE: The purpose of this study was to investigate the roles of EPIs in the pathogenesis of chronic rhinosinusitis (CRS). METHODS: We examined the expression of cystatin A and SPINK5 in the nasal epithelial cells of patients with CRS. Additionally, the in vitro effects of recombinant EPIs on the secretion of the epithelial-derived cytokines, interleukin (IL)-25, IL-33 and thymic stromal lymphopoietin (TSLP), in airway epithelial cells, and the in vivo effects of recombinant EPIs in the nasal epithelium of mice exposed to multiple airborne allergens (MAA) were examined...
October 25, 2016: American Journal of Respiratory and Critical Care Medicine
Elizabeth A Belloli, Irina Degtiar, Xin Wang, Gregory A Yanik, Linda J Stuckey, Stijn E Verleden, Ella A Kazerooni, Brian D Ross, Susan Murray, Craig J Galbán, Vibha N Lama
RATIONALE: The predominant cause of chronic lung allograft failure is small airway obstruction arising from bronchiolitis obliterans. However, clinical methodologies for evaluating presence and degree of small airway disease are lacking. OBJECTIVES: To determine if Parametric Response Mapping (PRM), a novel computed tomography (CT) voxel-wise methodology, can offer insight into chronic allograft failure phenotypes and provide prognostic information following spirometric decline...
October 25, 2016: American Journal of Respiratory and Critical Care Medicine
Juan P Boriosi, Jens C Eickhoff, Kristi B Klein, Gregory A Hollman
BACKGROUND AND AIM: Both propofol and dexmedetomidine have been found to be safe and effective sedation for magnetic resonance imaging (MRI). Our program experienced an increase in patients arousing and experiencing an adverse airway event during propofol sedation for MRI in the first months of using a new 3T (Tesla) MRI scanner that was found to have a longer reverberation time compared to the previous 1.5 T MRI. In an effort to decrease patient arousal and adverse airway events during MRI, we administered a dexmedetomidine load prior to our standard propofol protocol...
October 25, 2016: Paediatric Anaesthesia
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