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https://www.readbyqxmd.com/read/28346012/lymphangiogenesis-fuel-smoke-or-extinguisher-of-inflammation-s-fire
#1
Gabriella R Abouelkheir, Bradley D Upchurch, Joseph M Rutkowski
Lymphangiogenesis is a recognized hallmark of inflammatory processes in tissues and organs as diverse as the skin, heart, bowel, and airways. In clinical and animal models wherein the signaling processes of lymphangiogenesis are manipulated, most studies demonstrate that an expanded lymphatic vasculature is necessary for the resolution of inflammation. The fundamental roles that lymphatics play in fluid clearance and immune cell trafficking from the periphery make these results seemingly obvious as a mechanism of alleviating locally inflamed environments: the lymphatics are simply providing a drain...
April 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28345309/a-survey-of-clinicians-regarding-respiratory-physiotherapy-intervention-for-intubated-and-mechanically-ventilated-patients-with-community-acquired-pneumonia-what-is-current-practice-in-australian-icus
#2
Lisa van der Lee, Anne-Marie Hill, Shane Patman
RATIONALE, AIMS, AND OBJECTIVES: Community-acquired pneumonia (CAP) is a common cause for intensive care unit (ICU) admission resulting in high morbidity and mortality. There is a paucity of evidence regarding respiratory physiotherapy for intubated and mechanically ventilated patients with CAP, and anecdotally clinical practice is variable in this cohort. The aims of this study were to identify the degree of variability in physiotherapy practice for intubated adult patients with CAP and to explore ICU physiotherapist perceptions of current practice for this cohort and factors that influence physiotherapy treatment mode, duration, and frequency...
March 27, 2017: Journal of Evaluation in Clinical Practice
https://www.readbyqxmd.com/read/28338488/respiratory-complications-management-and-treatments-for-neuromuscular-disease-in-children
#3
MyMy C Buu
PURPOSE OF REVIEW: To summarize current literature describing the respiratory complications of neuromuscular disease (NMD) and the effect of respiratory interventions and to explore new gene therapies for patients with NMD. RECENT FINDINGS: Measurements of respiratory function focus on vital capacity and maximal inspiratory and expiratory pressure and show decline over time. Management of respiratory complications includes lung volume recruitment, mechanical insufflation-exsufflation, chest physiotherapy and assisted ventilation...
March 23, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28328824/early-use-of-noninvasive-techniques-for-clearing-respiratory-secretions-during-noninvasive-positive-pressure-ventilation-in-patients-with-acute-exacerbation-of-chronic-obstructive-pulmonary-disease-and-hypercapnic-encephalopathy-a-prospective-cohort-study
#4
Jinrong Wang, Zhaobo Cui, Shuhong Liu, Xiuling Gao, Pan Gao, Yi Shi, Shufen Guo, Peipei Li
Noninvasive positive-pressure ventilation (NPPV) might be superior to conventional mechanical ventilation (CMV) in patients with acute exacerbations of chronic obstructive pulmonary disease (AECOPDs). Inefficient clearance of respiratory secretions provokes NPPV failure in patients with hypercapnic encephalopathy (HE). This study compared CMV and NPPV combined with a noninvasive strategy for clearing secretions in HE and AECOPD patients.The present study is a prospective cohort study of AECOPD and HE patients enrolled between October 2013 and August 2015 in a critical care unit of a major university teaching hospital in China...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327162/biological-effects-of-carbon-black-nanoparticles-are-changed-by-surface-coating-with-polycyclic-aromatic-hydrocarbons
#5
Karina Lindner, Michael Ströbele, Sandra Schlick, Sina Webering, André Jenckel, Johannes Kopf, Olga Danov, Katherina Sewald, Christian Buj, Otto Creutzenberg, Thomas Tillmann, Gerhard Pohlmann, Heinrich Ernst, Christina Ziemann, Gereon Hüttmann, Holger Heine, Henning Bockhorn, Tanja Hansen, Peter König, Heinz Fehrenbach
BACKGROUND: Carbon black nanoparticles (CBNP) are mainly composed of carbon, with a small amount of other elements (including hydrogen and oxygen). The toxicity of CBNP has been attributed to their large surface area, and through adsorbing intrinsically toxic substances, such as polycyclic aromatic hydrocarbons (PAH). It is not clear whether a PAH surface coating changes the toxicological properties of CBNP by influencing their physicochemical properties, through the specific toxicity of the surface-bound PAH, or by a combination of both...
March 21, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28324898/breathing-and-swallowing-the-next-frontier
#6
Roxann Diez Gross, Marybeth Trapani-Hanasewych
The anatomical overlap of the pathways for air passage and nutrition necessitate precise coordination between the two vital functions. Neuroanatomic structures in the brainstem for sucking, breathing, and swallowing are also in close proximity and must swiftly coordinate the processes. In a healthy neonate, the oropharyngeal experience and stimulation of early feeding enables respiratory control during suckling to develop. Despite wide variability among the methods used to investigate breathing and swallowing coordination in infancy, a consistent finding of postswallow exhalation has been reported...
April 2017: Seminars in Speech and Language
https://www.readbyqxmd.com/read/28319489/autogenic-drainage-in-children-with-cystic-fibrosis
#7
Lieselotte Corten, Brenda M Morrow
PURPOSE: Airway clearance is an essential part of the management of cystic fibrosis (CF) as it facilitates clearance of viscous pulmonary secretions. This review aimed to determine the effect of autogenic drainage (AD) and assisted autogenic drainage (AAD) compared with no, sham, or other types of airway clearance in children with CF. SUMMARY OF KEY POINTS: Two pediatric randomized cross-over trials were identified on the use of AD in children with CF; no studies were available on the use of AAD...
March 17, 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/28304344/nrf2-regulates-the-risk-of-a-diesel-exhaust-inhalation-induced-immune-response-during-bleomycin-lung-injury-and-fibrosis-in-mice
#8
Ying-Ji Li, Takako Shimizu, Yusuke Shinkai, Yukiyo Hirata, Hirofumi Inagaki, Ken Takeda, Arata Azuma, Masayuki Yamamoto, Tomoyuki Kawada
The present study investigated the effects of diesel exhaust (DE) on an experimental model of bleomycin (BLM)-induced lung injury and fibrosis in mice. BLM was intravenously administered to both Nrf2(+/+) and Nrf2(-/-) C57BL/6J mice on day 0. The mice were exposed to DE for 56 days from 28 days before the BLM injection to 28 days after the BLM injection. Inhalation of DE induced significant inhibition of airway clearance function and the proinflammatory cytokine secretion in macrophages, an increase in neutrophils, and severe lung inflammatory injury, which were greater in Nrf2(-/-) mice than in Nrf2(+/+) mice...
March 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28303960/the-immune-correlates-of-protection-for-an-avian-influenza-h5n1-vaccine-in-the-ferret-model-using-oil-in-water-adjuvants
#9
Sook-San Wong, Susu Duan, Jennifer DeBeauchamp, Mark Zanin, Lisa Kercher, Stephanie Sonnberg, Thomas Fabrizio, Trushar Jeevan, Jeri-Carol Crumpton, Christine Oshansky, Yilun Sun, Li Tang, Paul Thomas, Richard Webby
Because of the pathogenicity and low incidence of avian influenza virus infections in humans, the immune correlates of protection for avian influenza vaccines cannot be determined from clinical studies. Here, we used the ferret model to address this for an avian influenza H5N1 vaccine. Using oil-in-water adjuvants, we generated groups of ferrets with undetectable (geometric mean titer [GMT] < 10), low (GMT = 28.3), or high (GMT > 761.1) hemagglutination-inhibition (HAI) titers to the A/Viet Nam/1203/2004 (H5N1) virus...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298751/comparative-study-of-two-laryngeal-mask-airways-proseal-laryngeal-mask-airway-and-supreme-laryngeal-mask-airway-in-anesthetized-paralyzed-adults-undergoing-elective-surgery
#10
Ravneet Kaur Gill, Abhijit Tarat, Debagopal Pathak, Suneeta Dutta
CONTEXT: Supraglottic airway devices can act as an alternative to endotracheal intubation in both normal and difficult airway. LMA Proseal (P-LMA) and LMA Supreme (S-LMA) alongwith acting as effective ventilating device, provide port for gastric drainage. AIM: The objective of this study was to compare the two devices for effective ventilation and complications. SETTING AND DESIGN: A prospective, randomized, single-blinded study was conducted in a tertiary care teaching hospital...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28292973/evaluation-of-functional-characteristics-of-4-oscillatory-positive-pressure-devices-in-a-simulated-cystic-fibrosis-model
#11
Hillary Van Fleet, Diane K Dunn, Neil L McNinch, Teresa A Volsko
BACKGROUND: Oscillatory positive expiratory pressure (OPEP) is an airway clearance therapy that delivers positive pressure and air-flow oscillations during exhalation. This study described functional characteristic differences of 4 OPEP devices during an active exhalation in a simulated model. We hypothesized peak pressure (Ppeak), positive expiratory pressure (PEP), oscillatory frequency (f), and pressure amplitude will differ, depending upon the device used, device resistance setting, and time (repeated consecutive active exhalations through the device)...
March 14, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28282951/interactions-between-neutrophils-and-pseudomonas-aeruginosa-in-cystic-fibrosis
#12
REVIEW
Balázs Rada
Cystic fibrosis (CF) affects 70,000 patients worldwide. Morbidity and mortality in CF is largely caused by lung complications due to the triad of impaired mucociliary clearance, microbial infections and chronic inflammation. Cystic fibrosis airway inflammation is mediated by robust infiltration of polymorphonuclear neutrophil granulocytes (PMNs, neutrophils). Neutrophils are not capable of clearing lung infections and contribute to tissue damage by releasing their dangerous cargo. Pseudomonas aeruginosa is an opportunistic pathogen causing infections in immunocompromised individuals...
March 9, 2017: Pathogens
https://www.readbyqxmd.com/read/28273842/immunological-features-of-respiratory-syncytial-virus-caused-pneumonia-implications-for-vaccine-design
#13
REVIEW
Emma Rey-Jurado, Alexis M Kalergis
The human respiratory syncytial virus (hRSV) is the causative agent for high rates of hospitalizations due to viral bronchiolitis and pneumonia worldwide. Such a disease is characterized by an infection of epithelial cells of the distal airways that leads to inflammation and subsequently to respiratory failure. Upon infection, different pattern recognition receptors recognize the virus and trigger the innate immune response against the hRSV. Further, T cell immunity plays an important role for virus clearance...
March 4, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28261574/persistent-and-recurrent-bacterial-bronchitis-a-paradigm-shift-in-our-understanding-of-chronic-respiratory-disease
#14
REVIEW
Alya Ishak, Mark L Everard
The recent recognition that the conducting airways are not "sterile" and that they have their own dynamic microbiome, together with the rapid advances in our understanding of microbial biofilms and their roles in the causation of respiratory diseases (such as chronic bronchitis, sinusitis, and chronic otitis media), permit us to update the "vicious circle" hypothesis of the causation of bronchiectasis. This proposes that chronic inflammation driven by persistent bacterial bronchitis (PBB) causes damage to both the epithelium, resulting in impaired mucociliary clearance, and to the airway wall, which eventually manifests as bronchiectasis...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28248548/lung-function-in-south-african-adolescents-infected-perinatally-with-hiv-and-treated-long-term-with-antiretroviral-therapy
#15
Leah Nyawira Githinji, Diane M Gray, Sipho Hlengwa, Landon Myer, Heather J Zar
RATIONALE: Lung disease is a common cause of mortality and morbidity in HIV-infected adolescents, but there is limited information on the spectrum of lung function impairment in adolescents on antiretroviral therapy. OBJECTIVES: To investigate lung function in HIV-infected adolescents on antiretroviral therapy in the Cape Town Adolescent Antiretroviral Cohort. METHODS: A total of 515 South African adolescents aged 9 to 14 years, stable on antiretroviral therapy for at least 6 months, underwent baseline lung function testing...
March 1, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28239574/do-nasal-surgeries-affect-mucociliary-clearance
#16
Rajeshwary Aroor, Zainab Sunu Ali, K S Gangadhara Somayaji
The study was conducted to assess the impact of different nasal surgeries on the nasal mucociliary clearance mechanism. Mucociliary function of the nasal mucosa of patients who were undergoing various nasal surgeries was assessed by the Saccharin test by placing 5 mg saccharin granule on the anterior end of the inferior turbinate 1 day prior to the surgery. The time required for the test subject to experience a sweet taste was measured in minutes. Post-operatively the test was repeated 6 weeks after the surgery and the test times were compared...
March 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28238295/use-of-intranasal-corticosteroids-in-adenotonsillar-hypertrophy
#17
E U Sakarya, N Bayar Muluk, E G Sakalar, M Senturk, M Aricigil, S A Bafaqeeh, C Cingi
OBJECTIVES: This review examined the efficacy of intranasal corticosteroids for improving adenotonsillar hypertrophy. METHOD: The related literature was searched using PubMed and Proquest Central databases. RESULTS: Adenotonsillar hypertrophy causes mouth breathing, nasal congestion, hyponasal speech, snoring, obstructive sleep apnoea, chronic sinusitis and recurrent otitis media. Adenoidal hypertrophy results in the obstruction of nasal passages and Eustachian tubes, and blocks the clearance of nasal mucus...
February 27, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28235993/a-novel-two-step-sequential-bioaccessibility-test-for-potentially-toxic-elements-in-inhaled-particulate-matter-transported-into-the-gastrointestinal-tract-by-mucociliary-clearance
#18
Jawad Ali Hussein Alpofead, Christine M Davidson, David Littlejohn
A novel two-step sequential extraction has been developed to assess the bioaccessibility of As, Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn in airborne particulate matter following inhalation and transport into the human gastrointestinal tract by mucociliary clearance. A new artificial mucus fluid (AMF) was used to determine the bioaccessible potentially toxic element (PTE) fraction in the upper airways, in sequence with the simplified bioaccessibility extraction test (SBET) or the stomach phase of the unified bioaccessibility method (gastric fluid only) (UBMG)...
February 24, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28223466/short-term-effect-of-autogenic-drainage-on-ventilation-inhomogeneity-in-adult-subjects-with-stable-non-cystic-fibrosis-bronchiectasis
#19
William Poncin, Grégory Reychler, Noémie Leeuwerck, Nathalie Bauwens, Anne-Sophie Aubriot, Candice Nader, Giuseppe Liistro, Sophie Gohy
BACKGROUND: Lung clearance index (LCI), a measure of ventilation inhomogeneity derived from a multiple-breath washout test, is a promising tool for assessing airway function in patients with non-cystic fibrosis bronchiectasis. However, it is unknown whether ventilation inhomogeneity could improve after successful elimination of excessive secretions within bronchiectasis. The objective of this work was to assess the short-term effects of lung secretion clearance using the autogenic drainage technique on standard lung function tests and LCI in subjects with non-cystic fibrosis bronchiectasis...
February 21, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28223396/personalising-airway-clearance-in-chronic-lung-disease
#20
REVIEW
Maggie McIlwaine, Judy Bradley, J Stuart Elborn, Fidelma Moran
This review describes a framework for providing a personalised approach to selecting the most appropriate airway clearance technique (ACT) for each patient. It is based on a synthesis of the physiological evidence that supports the modulation of ventilation and expiratory airflow as a means of assisting airway clearance. Possession of a strong understanding of the physiological basis for ACTs will enable clinicians to decide which ACT best aligns with the individual patient's pathology in diseases with anatomical bronchiectasis and mucus hypersecretion...
January 2017: European Respiratory Review: An Official Journal of the European Respiratory Society
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