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Reactive airway disease

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https://www.readbyqxmd.com/read/29343554/biased-generation-and-in-situ-activation-of-lung-tissue-resident-memory-cd4-t-cells-in-the-pathogenesis-of-allergic-asthma
#1
Damian L Turner, Monica Goldklang, Filip Cvetkovski, Daniel Paik, Jordis Trischler, Josselyn Barahona, Minwei Cao, Ronak Dave, Nicole Tanna, Jeanine M D'Armiento, Donna L Farber
Asthma is a chronic inflammatory disease mediated by allergen-specific CD4 T cells that promote lung inflammation through recruitment of cellular effectors into the lung. A subset of lung T cells can persist as tissue-resident memory T cells (TRMs) following infection and allergen induction, although the generation and role of TRM in asthma persistence and pathogenesis remain unclear. In this study, we used a mouse model of chronic exposure to intranasal house dust mite (HDM) extract to dissect how lung TRMs are generated and function in the persistence and pathogenesis of allergic airway disease...
January 17, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29341788/specific-airway-resistance-is-a-better-outcome-parameter-in-bronchial-provocation-testing-compared-to-fev1-in-patients-with-bronchial-asthma
#2
S A van Nederveen-Bendien, J Vahl, H G M Heijerman
OBJECTIVES: Asthma is a chronic inflammatory disease characterized by airway hyperresponsiveness (AHR). A bronchial provocation test (BPT) is used to test for AHR. However forced expiratory volume in one second (FEV1), used as outcome parameter is effort-related, in contrast to specific airway resistance (sRaw). This research was conducted to provide insight in the usefulness of sRaw as an outcome parameter in BPT. METHODS: A total of 85 patients performing a BPT were included in the study...
January 17, 2018: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/29339659/fc%C3%AE-r-ros-ck2%C3%AE-is-the-key-inducer-of-nf-%C3%AE%C2%BAb-activation-in-a-murine-model-of-asthma
#3
June-Mo Kim, Hae-Kyoung Kim, Yoo-Na Im, Yun-Soo Bae, Suhn-Young Im, Hern-Ku Lee
BACKGROUND: The transcription factor nuclear factor (NF)-κB plays a pivotal role in the development of allergic airway inflammation. However, the mechanism of NF-κB activation in asthma remains to be elucidated. METHODS: CK2α activation was assessed by CK2α phosphorylation and protein expression. Airway levels of histamine and cytokines were determined by ELISA. We used 2 (active and passive) forms of allergic pulmonary inflammation models. In the active form, the animals were immunized with ovalbumin (OVA) intraperitoneally, followed by an airway challenge with OVA...
January 17, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29320669/comorbidities-in-australian-women-with-hormone-dependent-breast-cancer-a-population-based-analysis
#4
Huah Shin Ng, Bogda Koczwara, David M Roder, Theo Niyonsenga, Agnes I Vitry
OBJECTIVE: To compare how frequently selected chronic diseases developed in women with breast cancer receiving endocrine therapy, and in women without cancer. DESIGN, SETTING AND PARTICIPANTS: Retrospective, rolling cohort study, analysing a random 10% sample of Pharmaceutical Benefits Scheme (PBS) data for the period 1 January 2003 - 31 December 2014. Women with breast cancer who first commenced endocrine therapy between January 2004 and December 2011 were identified, and age- and sex-matched (1:10) by comorbidity with control groups of women who did not have a dispensing record for antineoplastic agents during the study period or the comorbidity of interest at baseline...
January 15, 2018: Medical Journal of Australia
https://www.readbyqxmd.com/read/29319032/study-of-inflammatory-markers-and-bode-index-in-chronic-obstructive-pulmonary-disease
#5
Priti Lokesh Meshram, Shivprasad N Shinde, Nagsen N Ramraje, Rohit R Hegde
INTRODUCTION: Chronic obstructive pulmonary disease (COPD) is a common preventable and treatable disease characterized by progressive airflow limitation and associated with enhanced chronic inflammatory response of the airways to a variety of noxious stimuli. The current concept of COPD, however, extends beyond the respiratory system to include a variety of extrapulmonary manifestations which includes raised inflammatory markers. METHODS: This was a single, center observational open-labeled case-controlled study which included fifty patients of diagnosed COPD and 50 age- and gender-matched controls...
January 2018: Lung India: Official Organ of Indian Chest Society
https://www.readbyqxmd.com/read/29302924/serum-romo1-is-significantly-associated-with-disease-severity-in-patients-with-obstructive-sleep-apnea-syndrome
#6
Liang Ye, Yingying Qian, Qian Li, Surong Fang, Zhenhua Yang, Yan Tan, Wei Gu
PURPOSE: We aim to evaluate reactive oxygen species modulator 1 (Romo1) levels in obstructive sleep apnea syndrome (OSAS) and analyze its possible relationships to OSAS severity, reactive oxygen species (ROS), and C-reactive protein (CRP). Additionally, we also investigated the effects of nasal continuous positive airway pressure (nCPAP) on serum Romo1. METHODS: One hundred and five patients diagnosed with OSAS were classified into the OSAS group, and 41 subjects without OSAS were recruited for the control group...
January 4, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29302827/colonic-perforation-due-to-severe-cytomegalovirus-disease-in-granulomatosis-with-polyangiitis-after-immunosuppression
#7
REVIEW
Alessandra Soriano, Nazareno Smerieri, Stefano Bonilauri, Loredana De Marco, Alberto Cavazza, Carlo Salvarani
Granulomatosis with polyangiitis (GPA) is a small-vessel necrotizing granulomatous vasculitis typically involving upper airways, lungs, and kidneys, which may lead to end-organ damage and life-threatening complications. Major infections during GPA course represent a considerable concern in the management of the disease. Cytomegalovirus (CMV) infection and disease are rare but significant complications in the course of GPA being associated with high morbidity and mortality rates. Colonic perforation due to CMV colitis is exceedingly rare and has so far almost exclusively been documented in HIV, renal transplant, and systemic lupus erythematosus patients...
January 4, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29277898/glucose-6-phosphate-dehydrogenase-inhibition-attenuates-acute-lung-injury-through-reduction-in-nadph-oxidase-derived-reactive-oxygen-species
#8
Ahmed Nadeem, Naif O Al-Harbi, Sheikh F Ahmad, Khalid E Ibrahim, Nahid Siddiqui, Mohammed M Al-Harbi
Acute lung injury (ALI) is a heterogeneous disease with the hallmarks of alveolar capillary membrane injury, increased pulmonary edema and pulmonary inflammation. The commonest direct etiological factor for ALI is usually parenchymal lung infection or hemorrhage. Reactive oxygen species (ROS) generated by NADPH oxidase (NOX2) are thought to play an important role in the pathophysiology of ALI. Glucose-6-phosphate dehydrogenase (G6PD) plays an important role both in production of ROS as well as their removal through supply of NADPH...
December 25, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29245060/activation-of-human-eosinophils-with-palladium-nanoparticles-pd-nps-importance-of-the-actin-cytoskeleton-in-pd-nps-induced-cellular-adhesion
#9
P Chhay, M Murphy-Marion, Y Samson, D Girard
Palladium (Pd) is known to be released into the environment in the fine and ultrafine (at the nanoscale) airborne particle fractions mainly from automobile catalytic converters leading to an increase human exposure to this noble metal. It was reported that Pd can induce allergic reactions in individuals exposed to it via different ways. Some studies reported an increased number of eosinophils into airways following NP exposure in vivo in rodent models of allergies and inflammation. Knowing the importance of eosinophils in allergies, asthma and other lung diseases, it is surprising to observe that the direct effect of Pd at the nanoscale in eosinophils has been poorly documented...
December 11, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29235125/nasal-epithelial-barrier-disruption-by-particulate-matter-%C3%A2-2-5-%C3%AE-m-via-tight-junction-protein-degradation
#10
Renwu Zhao, Zhiqiang Guo, Ruxin Zhang, Congrui Deng, Jian Xu, Weiyang Dong, Zhicong Hong, Hongzhi Yu, Huiru Situ, Chunhui Liu, Guoshun Zhuang
Upper airway diseases including sinonasal disorders may be caused by exposure to fine particulate matter (≤2.5 μm; PM2.5), as proven by epidemiological studies. PM2.5 is a complex entity whose chemical constituents and physicochemical properties are not confined to a single, independent "particle" but which in this study means a distinctive environmental "toxin." The mechanism whereby PM2.5 induces nasal epithelial barrier dysfunction leading to sinonasal pathology remains unknown. In the present study, human nasal epithelial cells were exposed to non-cytotoxic doses of PM2...
December 13, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29230286/asthma-mimic-case-report-and-literature-review-of-vocal-cord-nodule-associated-with-wheezing
#11
Muhammad Kashif, Tushi Singh, Ahsan Aslam, Misbahuddin Khaja
Asthma is a heterogeneous disease, usually characterized by chronic airway inflammation. Various clinical conditions can mimic asthma, such as foreign body aspiration, subglottic stenosis, congestive heart failure, diffuse panbronchiolitis, aortic arch anomalies, reactive airway dysfunction syndrome, chronic obstructive pulmonary disease, retrosternal goiter, vocal cord tumors, other airway tumors, and vocal cord dysfunction. Upper airway obstruction can be a life-threatening emergency. Here, we present the case of a 58-year-old female with recurrent hospital visits for wheezing and exacerbations of asthma, who was later found to have a vocal cord nodule confirmed to be squamous cell carcinoma, which was mimicking like asthma...
2017: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29230219/functional-impairment-of-mononuclear-phagocyte-system-by-the-human-respiratory-syncytial-virus
#12
REVIEW
Karen Bohmwald, Janyra A Espinoza, Raúl A Pulgar, Evelyn L Jara, Alexis M Kalergis
The mononuclear phagocyte system (MPS) comprises of monocytes, macrophages (MΦ), and dendritic cells (DCs). MPS is part of the first line of immune defense against a wide range of pathogens, including viruses, such as the human respiratory syncytial virus (hRSV). The hRSV is an enveloped virus that belongs to the Pneumoviridae family, Orthopneumovirus genus. This virus is the main etiological agent causing severe acute lower respiratory tract infection, especially in infants, children and the elderly. Human RSV can cause bronchiolitis and pneumonia and it has also been implicated in the development of recurrent wheezing and asthma...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29227043/the-association-of-air-pollutants-and-allergic-and-nonallergic-rhinitis-in-chronic-rhinosinusitis
#13
Leila J Mady, Hannah L Schwarzbach, John A Moore, Robert M Boudreau, Thomas M Kaffenberger, Thomas J Willson, Stella E Lee
BACKGROUND: There has been little investigation regarding air quality and rhinitis in the pathophysiology of upper airway disease. In this study, we assessed the impact of inhalant pollutants (particulate matter 2.5 [PM2.5 ] and black carbon [BC]) on allergic rhinitis and chronic rhinosinusitis (CRS) disease severity. METHODS: CRS patients with nasal polyps (CRSwNP) and without polyps (CRSsNP) were identified. Spatial modeling from pollutant monitoring sites was used to estimate exposures for patients meeting the inclusion criteria (total, n = 125; CRSsNP, n = 67; CRSsNP, n = 58)...
December 11, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29225050/inhibition-of-the-mitochondrial-calcium-uniporter-prevents-il-13-and-allergen-mediated-airway-epithelial-apoptosis-and-loss-of-barrier-function
#14
Sara C Sebag, Olha M Koval, John D Paschke, Christopher J Winters, Alejandro P Comellas, Isabella M Grumbach
Mitochondria are increasingly recognized as key mediators of acute cellular stress responses in asthma. However, the distinct roles of regulators of mitochondrial physiology on allergic asthma phenotypes are currently unknown. The mitochondrial Ca2+ uniporter (MCU) resides in the inner mitochondrial membrane and controls mitochondrial Ca2+ uptake into the mitochondrial matrix. To understand the function of MCU in models of allergic asthma, in vitro and in vivo studies were performed using models of functional deficiency or knockout of MCU...
December 7, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/29220595/dose-dependent-effects-of-tadalafil-and-roflumilast-on-ovalbumin-induced-airway-hyperresponsiveness-in-guinea-pigs
#15
Anna Urbanova, Ivana Medvedova, Martin Kertys, Pavol Mikolka, Petra Kosutova, Daniela Mokra, Juraj Mokrý
INTRODUCTION: Chronic obstructive diseases of airways associated with cough and/or airway smooth muscle hyperresponsiveness are usually treated with bronchodilating and anti-inflammatory drugs. Recently, selective phosphodiesterase (PDE) 4 inhibitors have been introduced into the therapy of chronic obstructive pulmonary disease. Several studies have demonstrated their ability to influence the airway reactivity and eosinophilic inflammation by increasing the intracellular cAMP concentrations also in bronchial asthma...
December 8, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/29218257/pulmonary-tuberculosis-versus-recurrent-chemotherapy-induced-pneumonitis-a-clinical-dilemma
#16
Gulrayz Ahmed, Muhammad W Saif
Chemotherapy-induced lung toxicity can affect pulmonary parenchyma, pleura, airways, pulmonary vascular system, mediastinum or the neuromuscular system that is responsible for respiration. Chemotherapy-induced pulmonary toxicity is a diagnosis of exclusion. When the patients with malignancies develop pulmonary toxicity such as pneumonitis and distinguishing it from alternative diseases such as infectious, thrombotic, cardiac, malignant or exacerbation of chronic lung conditions can be difficult. Moreover, such patients are often immunosuppressed, physically stressed from the underlying disease and the cancer treatment and hence, more susceptible to usual and unusual or opportunistic infections...
October 4, 2017: Curēus
https://www.readbyqxmd.com/read/29217598/phenotypes-of-symptomatic-airways-disease-in-china-and-new-zealand
#17
James Fingleton, Kewu Huang, Mark Weatherall, Yanfei Guo, Stefan Ivanov, Piet Bruijnzeel, Hong Zhang, Wei Wang, Richard Beasley, Chen Wang
It is uncertain whether phenotypes of asthma and chronic obstructive pulmonary disease (COPD) vary between populations with different genetic and environmental characteristics. Here, our objective was to compare the phenotypes of airways disease in two separate populations.This was a cross-sectional observational study in adult populations from New Zealand and China. Participants aged 40-75 years who reported wheeze and breathlessness in the last 12 months were randomly selected from the general population and underwent detailed characterisation...
December 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29178078/epithelial-mitochondrial-dysfunction-in-lung-disease
#18
Linlin Zhang, William Wang, Bijun Zhu, Xiangdong Wang
Since the twentieth century, scientists have studied the functions and mechanisms of the mitochondria. The mitochondrion plays many important roles in cell functioning and contributes to apoptosis, embryonic and tissue development, aging, etc. Consequently, mitochondrial dysfunction often has a direct impact on health such as aging, tumorigenesis, lung injury and COPD, etc. Recent evidence indicates that the mitochondria could also be a crucial contributor to immunity with functions such as biogenesis, fusion, and fission impacting various areas in initializing immunity...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29174587/effects-of-mesenchymal-stromal-cells-play-a-role-the-oxidant-antioxidant-balance-in-a-murine-model-of-asthma
#19
M A S Malaquias, L A Oyama, P C Jericó, I Costa, G Padilha, S Nagashima, M Lopes-Pacheco, C L K Rebelatto, P V Michelotto, D G Xisto, P R S Brofman, P R M Rocco, L de Noronha
Asthma is a heterogeneous disease characterised by chronic airway inflammation. One of the most devastating consequences of this inflammatory process is the generation of reactive oxygen and nitrogen species responsible for oxidative stress. The aim of this study is to analyse the efficiency of treatment with human bone marrow-derived mesenchymal stromal cells (hMSC) in maintaining the oxidative balance in a murine model of allergic asthma by quantifying nitrotyrosine in lung tissues. After confirmation of asthma in the experimental model, samples of lung parenchyma were submitted to immunohistochemical assessment...
November 23, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29163511/lactoferrin-in-a-context-of-inflammation-induced-pathology
#20
REVIEW
Marian L Kruzel, Michal Zimecki, Jeffrey K Actor
Much progress has been achieved to elucidate the function of lactoferrin (LTF), an iron-binding glycoprotein, in the milieu of immune functionality. This review represents a unique examination of LTF toward its importance in physiologic homeostasis as related to development of disease-associated pathology. The immunomodulatory nature of this protein derives from its unique ability to "sense" the immune activation status of an organism and act accordingly. Underlying mechanisms are proposed whereby LTF controls disease states, thereby pinpointing regions of entry for LTF in maintenance of various physiological pathways to limit the magnitude of tissue damage...
2017: Frontiers in Immunology
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