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Airway smooth muscle

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https://www.readbyqxmd.com/read/28322300/noncanonical-nf-%C3%AE%C2%BAb-mediates-the-suppressive-effect-of-neutrophil-elastase-on-il-8-cxcl8-by-inducing-nkrf-in-human-airway-smooth-muscle
#1
Shu-Chuan Ho, Sheng-Ming Wu, Po-Hao Feng, Wen-Te Liu, Kuan-Yuan Chen, Hsiao-Chi Chuang, Yao-Fei Chan, Lu-Wei Kuo, Kang-Yun Lee
Neutrophil elastase (NE) suppresses IL-8/CXCL8 in human airway smooth muscle cells (hASM) while stimulating its production in respiratory epithelial cells. This differential effect is mediated by the selective induction of NKRF and dysregulation in chronic inflammatory diseases. We hypothesized that the differential activation of NF-κB subunits confer the opposite effect of NKRF on IL-8/CXCL8 in primary hASM and A549 cells stimulated with NE. The events occurring at the promoters of NKRF and IL-8/CXCL8 were observed by ChIP assays, and the functional role of RelB was confirmed by knockdown and overexpression...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28320373/nelumbo-nucifera-leaves-extracts-inhibit-mouse-airway-smooth-muscle-contraction
#2
Xiao Yang, Lu Xue, Qingyang Zhao, Congli Cai, Qing-Hua Liu, Jinhua Shen
BACKGROUND: Alkaloids extracted from lotus leaves (AELL) can relax vascular smooth muscle. However, whether AELL has a similar relaxant role on airway smooth muscle (ASM) remains unknown. This study aimed to explore the relaxant property of AELL on ASM and the underlying mechanism. METHODS: Alkaloids were extracted from dried lotus leaves using the high temperature rotary evaporation extraction method. The effects of AELL on mouse ASM tension were studied using force measuring and patch-clamp techniques...
March 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28303576/nonmuscle-nm-myosin-heavy-chain-phosphorylation-regulates-the-formation-of-nm-myosin-filaments-adhesome-assembly-and-smooth-muscle-contraction
#3
Wenwu Zhang, Susan J Gunst
The molecular function of nonmuscle (NM) isoforms of myosin II in smooth muscle (SM) tissues, and their possible role in contraction are largely unknown. We evaluated the function of NM myosin during contractile stimulation of canine tracheal SM tissues. Stimulation with ACh caused NM myosin filament assembly, as assessed by a Triton solubility assay and a proximity ligation assay to measure interactions between NM myosin monomers. ACh stimulated the phosphorylation of NM myosin heavy chain (HC) on Ser1943 in tracheal SM tissues, which can regulate NM myosin IIA filament assembly in vitro...
March 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28297812/-the-regulative-effects-of-aspergillus-fumigatus-on-expression-of-glucocorticoid-receptor-in-asthmatic-rats
#4
X Zhou, Y J Dang, G F Wang, X Q Jin
Objective: To study the regulative effects of Aspergillus fumigatus (A.fumigatus) on expression of glucocorticoid receptor (GCR) in asthmatic rats. Methods: Wistar rats were randomly divided into 4 groups: a normal control group (UC), a normal control with A. fumigatus group (UC+ AF), an OVA group (OVA), and an OVA with A. fumigatus group (OVA+ AF). OVA and OVA+ AF groups were sensitized and challenged with OVA to establish asthmatic models. UC and UC+ AF groups were given normal saline as controls. After the last challenge, OVA+ AF and UC+ AF groups were given A...
March 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28295786/stat3-potentiates-the-ability-of-airway-smooth-muscle-cells-to-promote-angiogenesis-by-regulating-vegf-signaling
#5
Jing Lv, Baohua Sun, Zhitao Mai, Mingming Jiang, Junfeng Du
Airway angiogenesis indicates the specific vascular structure remodeling that occurs in asthma. Airway smooth muscle (ASM) cells have been reported to be capable of promoting airway angiogenesis; however, the potential mechanism is yet not fully defined. Herein, we investigated the role of signal transducer and activator of transcription 3 (STAT3), in the progress of airway angiogenesis. Western blot analysis showed that STAT3 activation was aberrantly up-regulated in ASM tissues of patients with asthma and ASM cells that were exposed to cytokines to imitate the airway conditions in patients with asthma...
March 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28293414/galectin-3-an-early-predictive-biomarker-of-modulation-of-airway-remodeling-in-patients-with-severe-asthma-treated-with-omalizumab-for-36%C3%A2-months
#6
Anna Maria Riccio, Pierluigi Mauri, Laura De Ferrari, Rossana Rossi, Dario Di Silvestre, Louise Benazzi, Alessandra Chiappori, Roberto Walter Dal Negro, Claudio Micheletto, Giorgio Walter Canonica
BACKGROUND: Bronchial asthma is a heterogeneous disease characterized by three cardinal features: chronic inflammation, variable airflow obstruction, and airway hyperresponsiveness. Asthma has traditionally been defined using nonspecific clinical and physiologic variables that encompass multiple phenotypes and are treated with nonspecific anti-inflammatory therapies. Based on the modulation of airway remodeling after 12 months of anti-immunoglobulin E (IgE) treatment, we identified two phenotypes (omalizumab responder, OR; and non-omalizumab responder, NOR) and performed morphometric analysis of bronchial biopsy specimens...
2017: Clinical and Translational Allergy
https://www.readbyqxmd.com/read/28293189/investigation-into-the-role-of-pi3k-and-jak3-kinase-inhibitors-in-murine-models-of-asthma
#7
Akshaya D Wagh, Manoranjan Sharma, Jogeshwar Mahapatra, Abhijeet Chatterjee, Mukul Jain, Veeranjaneyulu Addepalli
Asthma is a clinical disorder commonly characterized by chronic eosinophilic inflammation, remodeling and hyper responsiveness of the airways. However, the kinases like Phosphoinositide 3 kinase (PI3K) and Janus kinase 3 (JAK3) are involved in mast cell proliferation, activation, recruitment, migration, and prolonged survival of inflammatory cells. The present study was designed to evaluate the in-vivo comparative effects of two kinase inhibitors on airway inflammation and airway remodeling in acute and chronic models of asthma...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28284212/combination-of-glycopyrronium-and-indacaterol-inhibits-carbachol-induced-erk5-signal-in-fibrotic-processes
#8
Yukiko Namba, Shinsaku Togo, Miniwan Tulafu, Kotaro Kadoya, Kumi Yoneda Nagahama, Hikari Taka, Naoko Kaga, Akira Orimo, Xiangde Liu, Kazuhisa Takahashi
BACKGROUND: Airway fibrosis is one of the pathological features of chronic obstructive pulmonary disease (COPD), and recent studies revealed that acetylcholine plays an important role in the development of airway remodeling by stimulating proliferation and collagen synthesis of lung fibroblasts. This study was designed to examine the effects of a long-acting muscarinic receptor antagonist (LAMA) glycopyrronium and a long-acting β2 adrenergic receptor agonist (LABA) indacaterol on acetylcholine-mediated fibrotic responses in lung fibroblasts...
March 11, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28283479/pkc-dependent-regulation-of-kv7-5-channels-by-the-bronchoconstrictor-histamine-in-human-airway-smooth-muscle-cells
#9
Jennifer M Haick, Lioubov I Brueggemann, Leanne L Cribbs, Mitchell F Denning, Jeffrey Schwartz, Kenneth L Byron
Kv7 potassium channels have recently been found to be expressed and functionally important for relaxation of airway smooth muscle. Previous research suggests that native Kv7 currents are inhibited following treatment of freshly isolated airway smooth muscle cells with bronchoconstrictor agonists, and in intact airways inhibition of Kv7 channels is sufficient to induce bronchiolar constriction. However, the mechanism by which Kv7 currents are inhibited by bronchoconstrictor agonists has yet to be elucidated...
March 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28282577/therapeutic-efficacy-of-a-co-blockade-of-il-13-and-il-25-on-airway-inflammation-and-remodeling-in-a-mouse-model-of-asthma
#10
Fang-Qi Zhang, Xin-Peng Han, Fang Zhang, Xuan Ma, Dong Xiang, Xue-Min Yang, Hai-Feng Ou-Yang, Zhikui Li
Repeated airway inflammation and unremitting remodeling provoke irreversible pulmonary dysfunction and resistance to current drugs in patients with chronic bronchial asthma. Interleukin (IL)-13 and IL-25 play an important role in airway inflammation and remodeling in asthma. We aimed to investigate whether co-inhibiting IL-13 and IL-25 can effectively down-regulate allergen-induced airway inflammation and remodeling in mice. Mice with asthma induced by chronic exposure to ovalbumin (OVA) were given soluble IL-13 receptor α2 (sIL-13R) or soluble IL-25 receptor (sIL-25R) protein alone and in combination to neutralize the bioactivity of IL-13 and IL-25, and relevant airway inflammation and remodeling experiments were performed...
March 7, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28278518/the-actin-regulator-zyxin-reinforces-airway-smooth-muscle-and-accumulates-in-airways-of-fatal-asthmatics
#11
Sonia R Rosner, Christopher D Pascoe, Elizabeth Blankman, Christopher C Jensen, Ramaswamy Krishnan, Alan L James, John G Elliot, Francis H Green, Jeffrey C Liu, Chun Y Seow, Jin-Ah Park, Mary C Beckerle, Peter D Paré, Jeffrey J Fredberg, Mark A Smith
Bronchospasm induced in non-asthmatic human subjects can be easily reversed by a deep inspiration (DI) whereas bronchospasm that occurs spontaneously in asthmatic subjects cannot. This physiological effect of a DI has been attributed to the manner in which a DI causes airway smooth muscle (ASM) cells to stretch, but underlying molecular mechanisms-and their failure in asthma-remain obscure. Using cells and tissues from wild type and zyxin-/- mice we report responses to a transient stretch of physiologic magnitude and duration...
2017: PloS One
https://www.readbyqxmd.com/read/28275141/cutting-edge-targeting-epithelial-ormdl3-increases-rather-than-reduces-airway-responsiveness-and-is-associated-with-increased-sphingosine-1-phosphate
#12
Marina Miller, Arvin B Tam, James L Mueller, Peter Rosenthal, Andrew Beppu, Ruth Gordillo, Matthew D McGeough, Christine Vuong, Taylor A Doherty, Hal M Hoffman, Maho Niwa, David H Broide
In this study, we used cre-lox techniques to generate mice selectively deficient in ORMDL3 in airway epithelium (Ormdl3(Δ2-3/Δ2-3)/CC10) to simulate an inhaled therapy that effectively inhibited ORMDL3 expression in the airway. In contrast to the anticipated reduction in airway hyperresponsiveness (AHR), OVA allergen-challenged Ormdl3(Δ2-3/Δ2-3)/CC10 mice had a significant increase in AHR compared with wild-type mice. Levels of airway inflammation, mucus, fibrosis, and airway smooth muscle were no different in Ormdl3(Δ2-3/Δ2-3)/CC10 and wild-type mice...
March 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28270767/a-phosphorylatable-sphingosine-analog-induces-airway-smooth-muscle-cytostasis-and-reverses-airway-hyperresponsiveness-in-experimental-asthma
#13
David R Gendron, Pascale B Lecours, Anne-Marie Lemay, Marie-Josée Beaulieu, Carole-Ann Huppé, Audrey Lee-Gosselin, Nicolas Flamand, Anthony S Don, Élyse Bissonnette, Marie-Renée Blanchet, Mathieu Laplante, Sylvain G Bourgoin, Ynuk Bossé, David Marsolais
In asthma, excessive bronchial narrowing associated with thickening of the airway smooth muscle (ASM) causes respiratory distress. Numerous pharmacological agents prevent experimental airway hyperresponsiveness (AHR) when delivered prophylactically. However, most fail to resolve this feature after disease is instated. Although sphingosine analogs are primarily perceived as immune modulators with the ability to prevent experimental asthma, they also influence processes associated with tissue atrophy, supporting the hypothesis that they could interfere with mechanisms sustaining pre-established AHR...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28267638/interleukin-17a-directly-acts-on-bronchial-smooth-muscle-cells-and-augments-the-contractility
#14
Yoshihiko Chiba, Gen Tanoue, Rena Suto, Wataru Suto, Motohiko Hanazaki, Hiroshi Katayama, Hiroyasu Sakai
BACKGROUND: Although interleukin-17 (IL-17) contributes to the induction of airway hyperresponsiveness in asthma, its effect on bronchial smooth muscle (BSM) remains largely unknown. Evidence support an involvement of RhoA/Rho-kinase in BSM contraction, and the pathway has now been proposed as a novel target for asthma therapy. To clarify the role of IL-17 on the development of BSM hyperresponsiveness, effects of IL-17A on BSM contractility and RhoA expression were investigated. METHODS: Male BALB/c mice and cultured human BSM cells (hBSMCs) were used...
December 11, 2016: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28261673/electroporation-ablation-of-bronchial-smooth-muscle-cells-a-novel-non-thermal-asthma-therapy
#15
Jason A Tri, Christopher V DeSimone, Craig Daniels, Roshini S Asirvatham, Susan B Mikell, Dorothy J Ladewig, Kelly Krajnick, Samuel J Asirvatham
OBJECTIVE: Asthma is a common disease which places significant burden on the US healthcare system and which can be associated with significant patient morbidity and mortality. Current medical therapies are costly and not curative. A new approach for a more permanent asthma treatment is the use of radiofrequency ablation. However, this radiofrequency approach is thermal-based and can result in deleterious effects to the airways, such as stenosis or ulceration. We describe a novel, improved therapeutic approach for smooth muscle ablation using non-thermal DC electroporation ablation...
December 2016: Pulm Crit Care Med
https://www.readbyqxmd.com/read/28259445/hmgb1-is-upregulated-in-the-airways-in-asthma-and-potentiates-airway-smooth-muscle-contraction-via-tlr4
#16
Leonarda Di Candia, Edith Gomez, Emilie Venereau, Latifa Chachi, Davinder Kaur, Marco E Bianchi, R A John Challiss, Christopher E Brightling, Ruth M Saunders
No abstract text is available yet for this article.
February 23, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28257236/human-rhinovirus-infection-of-epithelial-cells-modulates-airway-smooth-muscle-migration
#17
Sami Shariff, Christopher Shelfoon, Neil S Holden, Suzanne L Traves, Shahina Wiehler, Cora Kooi, David Proud, Richard Leigh
RATIONALE: Airway remodeling, a characteristic feature of asthma, begins in early life. Recurrent human rhinovirus (HRV) infections are a potential inciting stimulus for remodeling. One component of airway remodeling is an increase in airway smooth muscle cell mass with a greater proximity of the airway smooth muscle cells (ASMC) to the airway epithelium. We asked whether human bronchial epithelial cells infected with HRV produced mediators that are chemotactic for ASMC. METHODS: ASMC migration was investigated using the modified Boyden Chamber and the xCELLigence Real-Time Cell Analyzer...
March 3, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28256288/beneficial-effects-of-ursodeoxycholic-acid-via-inhibition-of-airway-remodelling-apoptosis-of-airway-epithelial-cells-and-th2-immune-response-in-murine-model-of-chronic-asthma
#18
S Işık, M Karaman, S Çilaker Micili, Ş Çağlayan-Sözmen, H Alper Bağrıyanık, Z Arıkan-Ayyıldız, N Uzuner, Ö Karaman
BACKGROUND AND AIMS: In previous studies, anti-inflammatory, anti-apoptotic and immunomodulatory effects of ursodeoxycholic acid (UDCA) on liver diseases have been shown. In this study, we aimed to investigate the effects of UDCA on airway remodelling, epithelial apoptosis, and T Helper (Th)-2 derived cytokine levels in a murine model of chronic asthma. METHODS: Twenty-seven BALB/c mice were divided into five groups; PBS-Control, OVA-Placebo, OVA-50mg/kg UDCA, OVA-150mg/kg UDCA, OVA-Dexamethasone...
February 27, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28254575/in-vivo-cough-suppressive-activity-of-pectic-polysaccharide-with-arabinogalactan-type-ii-side-chains-of-piper-nigrum-fruits-and-its-synergistic-effect-with-piperine
#19
Sadhana Khawas, Gabriela Nosáľová, Sujay Kumar Majee, Kanika Ghosh, Washim Raja, Veronika Sivová, Bimalendu Ray
Piper nigrum L. fruits are not only a prized spice, but also highly valued therapeutic agent that heals many ailments including asthma, cold and respiratory problems. Herein, we have investigated structural features and in vivo antitussive activity of three fractions isolated from Piper nigrum fruits. The water extract (PN-WE) upon fractionation with EtOH yielded two fractions: a soluble fraction (PN-eSf) and a precipitated (PN-ePf) one. The existence of a pectic polysaccharide with arabinogalactan type II side chains (147kDa) in PN-ePf and piperine in PN-eSf were revealed...
February 28, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28240945/evaluation-of-contractile-phenotype-in-airway-smooth-muscle-cells-isolated-from-endobronchial-biopsy-and-tissue-specimens-from-horses
#20
Amandine Vargas, Aude Peltier, Jean Dubé, Josiane Lefebvre-Lavoie, Véronique Moulin, Francine Goulet, Jean-Pierre Lavoie
OBJECTIVE To develop a method to maintain the initial phenotype of airway smooth muscle (ASM) cells isolated from equine endobronchial biopsy specimens in long-term cell culture. SAMPLE Endobronchial tissue specimens (8 to 10/horse) collected from the lungs of previously healthy horses at necropsy (n = 12) and endobronchial biopsy specimens collected from standing, sedated, heaves-affected horses in clinical remission of the disease (5) and control horses (4). PROCEDURES A sampling protocol was developed to recover and maintain a contractile phenotype in ASM cells from endobronchial specimens from freshly harvested equine lungs and from healthy and heaves-affected horses...
March 2017: American Journal of Veterinary Research
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