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https://www.readbyqxmd.com/read/29150353/barrier-dysfunction-in-the-nasal-allergy
#1
REVIEW
Ayumi Fukuoka, Tomohiro Yoshimoto
Epithelial cells form the first physiological barrier against invasion by pathogens and the infiltration of allergens. Tight junctions (TJ), a cell-cell junctional complex located on the apical side of epithelial cells, have a critical role in the maintenance of epithelial barrier function. Impaired TJ structures are observed in patients with asthma, atopic dermatitis and nasal allergy; therefore, the dysfunction of epithelial barriers might be involved in the initiation or progression of allergic diseases...
November 14, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29148567/silenced-dmbt1-promotes-nasal-mucosa-epithelial-cell-growth
#2
Xiaoqing Lu, Yaping Xu, Yu Zhao, Qilei Tao, Jian Wu
OBJECTIVE: The aim of this study was to investigate the role of the deleted in malignant brain tumors 1 (DMBT1) gene in the development of nasal polyps, as well as related mechanisms. METHODS: A stable human nasal mucosa epithelial cell (HNEpC) line with low expression of DMBT1 was generated. Three groups were established: a control group (HNEpCs without any treatment), a control short interference RNA (shRNA) group (HNEpCs transfected with an empty vector), and a DMBT1 shRNA group (HNEpCs with silenced DMBT1)...
November 17, 2017: Annals of Human Genetics
https://www.readbyqxmd.com/read/29145426/buserelin-alleviates-chloride-transport-defect-in-human-cystic-fibrosis-nasal-epithelial-cells
#3
Marie-Laure Calvez, Nathalie Benz, Florentin Huguet, Aude Saint-Pierre, Elise Rouillé, Christelle Coraux, Claude Férec, Mathieu Kerbiriou, Pascal Trouvé
Cystic fibrosis (CF) is the most common autosomal recessive disease in Caucasians caused by mutations in the gene encoding the Cystic Fibrosis Transmembrane conductance Regulator (CFTR) chloride (Cl-) channel regulated by protein kinases, phosphatases, divalent cations and by protein-protein interactions. Among protein-protein interactions, we previously showed that Annexin A5 (AnxA5) binds to CFTR and is involved in the channel localization within membranes and in its Cl- channel function. The deletion of phenylalanine at position 508 (F508del) is the most common mutation in CF which leads to an altered protein (F508del-CFTR) folding with a nascent protein retained within the ER and is quickly degraded...
2017: PloS One
https://www.readbyqxmd.com/read/29136347/pro-inflammatory-mediator-responses-from-neonatal-airway-epithelial-cells-and-early-childhood-wheeze
#4
Steve Turner, David Miller, Garry M Walsh, Alison Scaife, Ultan F Power, Michael D Shields, Graham Devereux
BACKGROUND: Airway epithelial cell (AEC) function differs between children with and without asthma. Here, we associated neonatal AEC function with asthma symptoms at 4 years of age. METHODS: Nasal AEC were collected from neonates within 48 h of birth. Cells were cultured and stimulated with tumor necrosis factor alpha/interleukin-1 beta (TNFα/IL-1β), lipopolysaccharide (LPS), or house dust mite (HDM). Absolute concentrations of pro-inflammatory mediators in the culture supernatant were quantified and expressed as median [interquartile range] in pg/mg protein...
November 14, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29135799/peripapillary-pachychoroid-syndrome
#5
Nopasak Phasukkijwatana, K Bailey Freund, Rosa Dolz-Marco, Mayss Al-Sheikh, Pearse A Keane, Catherine A Egan, Sandeep Randhawa, Jay M Stewart, Qingyun Liu, Alex P Hunyor, Allan Kreiger, Aaron Nagiel, Robert Lalane, Mansour Rahimi, Won Ki Lee, Lee Merrill Jampol, David Sarraf
PURPOSE: To describe the features of peripapillary pachychoroid syndrome (PPS), a novel pachychoroid disease spectrum (PDS) entity. METHODS: Medical records of 31 eyes (16 patients) with choroidal thickening associated with intraretinal and/or subretinal fluid in the nasal macula extending from the disk were reviewed (patients with PPS). Choroidal thickness was compared with 2 age-matched cohorts: typical PDS (17 eyes with central serous chorioretinopathy or pachychoroid neovasculopathy) and 19 normal eyes...
November 10, 2017: Retina
https://www.readbyqxmd.com/read/29135703/a-case-of-relapsing-retinal-pigment-epithelial-detachment-in-peripapillary-pachychoroid-pigment-epitheliopathy
#6
Fuyan Zhang, Yuxing Qiu, Jay M Stewart
PURPOSE: To report the findings in a patient with peripapillary pachychoroid pigment epitheliopathy who demonstrated a retinal pigment epithelial detachment (PED) that was present at some times but not other times. METHODS: A review of 24 months of the clinical course and findings on multimodal imaging, including color fundus photography, fundus autofluorescence, spectral domain optical coherence tomography, and enhanced depth imaging optical coherence tomography...
November 10, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29134552/intranasal-delivery-of-%C3%AE-asarone-to-the-brain-with-lactoferrin-modified-mpeg-pla-nanoparticles-prepared-by-premix-membrane-emulsification
#7
Linmei Pan, Jing Zhou, Feng Ju, Huaxu Zhu
Alpha-asarone is a bioactive component of Acorus tatarincuii Schott with low bioavailability, which is often used for treatments of various brain diseases in clinical setting. This study was to formulate biodegradable methoxy polyethylene glycol-polylactic acid (mPEG-PLA) nanoparticles (NPs) surface-modified by lactoferrin (Lf), for delivering α-asarone into the brain following intranasal administration. Alpha-asarone NPs were prepared by premix membrane emulsification. The relative parameters were optimized by a Box-Behnken experimental design...
November 13, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29133636/diagnosis-of-limbal-stem-cell-deficiency-based-on-corneal-epithelial-thickness-measured-on-anterior-segment-optical-coherence-tomography
#8
Amit Mehtani, Mahesh Chandra Agarwal, Sushant Sharma, Santosh Chaudhary
PURPOSE: The purpose of this study is to investigate the epithelial thickness in the cornea and limbus in limbal stem cell deficiency (LSCD) using anterior segment optical coherence tomography (AS-OCT). METHODS: This was a cross-sectional, comparative study. OCT images of 30 eyes of 19 patients with LSCD collected by AS-OCT were scanned. Corneal epithelial thickness was recorded at the central cornea and the superior, nasal, inferior, and temporal limbus. Measurment of the same region of 30 normal eyes served as control...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29132958/transforming-growth-factor-%C3%AE-1-decreases-epithelial-tight-junction-integrity-in-chronic-rhinosinusitis-with-nasal-polyps
#9
Jian Jiao, Ming Wang, Su Duan, Yifan Meng, Na Meng, Ying Li, Erzhong Fan, Cezmi Akdis, Luo Zhang
No abstract text is available yet for this article.
November 10, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29126941/glycol-chitosan-functionalized-asenapine-nanostructured-lipid-carriers-for-targeted-brain-delivery-pharmacokinetic-and-teratogenic-assessment
#10
Sanjay Kumar Singh, Mahendra Kumar Hidau, Shrikant Gautam, Kiran Gupta, Krishna Pal Singh, Shio Kumar Singh, Sanjay Singh
Blood brain barrier (BBB) is a complex, tight barrier between endothelial cells of cerebral blood vessels. It acts as a physical barrier and provides access to only those moieties which are necessary for proper brain functioning. However, this selective prudence also acts as a hindrance in therapeutic targeting of brain necessitating pharmaceutical intervention. Intranasal drug delivery is one such approach which we have exploited here for targeted brain delivery of asenapine via glycol chitosan coated nanostructured lipid carrier (GC-ANLC)...
November 7, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29123440/eosinophil-chemokines-and-clara-cell-protein-16-production-in-nasal-mucosa-of-patients-with-persistent-allergic-rhinitis
#11
Aleksandar Perić, Cveta Špadijer Mirković, Biserka Vukomanović Đurđević, Aneta V Perić, Danilo Vojvodić
Objective: Eotaxin-2 and regulated on activation normal T cell expressed and secreted (RANTES) are involved in the eosinophil trafficking in patients with persistent allergic rhinitis (PAR). Clara cell protein 16 (CC16) is an anti-inflammatory protein mainly produced by the epithelial non-ciliated Clara cells. The aim of this study was to investigate the production of CC16 and chemokines eotaxin-2 and RANTES in nasal mucosa of patients with PAR. Materials and Methods: Twenty-one PAR patients and 20 healthy participants were included...
October 2017: Eurasian Journal of Medicine
https://www.readbyqxmd.com/read/29121401/mp29-02-reduces-nasal-hyperreactivity-and-nasal-mediators-in-patients-with-house-dust-mite-allergic-rhinitis
#12
Inge Kortekaas Krohn, Ina Callebaut, Yeranddy A Alpizar, Brecht Steelant, Laura Van Gerven, Per Stahl Skov, Ahmad Kasran, Karel Talavera, Mira M Wouters, Jan L Ceuppens, Sven F Seys, Peter W Hellings
BACKGROUND: Nasal hyperreactivity (NHR) is an important clinical feature of allergic rhinitis (AR). The efficacy of MP29-02 (azelastine hydrochloride (AZE) and fluticasone propionate (FP)) nasal spray on local inflammatory mediators and NHR in AR is unknown. We tested if MP29-02 decreases inflammatory mediators and NHR in AR and if this effect is due to restoration of nasal epithelial barrier function. METHODS: A 4-week double-blinded placebo-controlled trial with MP29-02 treatment was conducted in 28 patients with house dust mite (HDM) AR...
November 9, 2017: Allergy
https://www.readbyqxmd.com/read/29115519/pten-promotes-apoptosis-of-h2o2%C3%A2-injured-rat-nasal-epithelial-cells-through-pi3k-akt-and-other-pathways
#13
Minghui Jia, Xiaoyun Chen, Jili Liu, Jun Chen
Chronic rhinosinusitis (CRS) is a form of chronic inflammation of the nasal cavity and paranasal sinus with multi‑causal pathogenesis, including oxidative stress. Several lines of evidence have demonstrated that the phosphatase and tensin homolog gene (PTEN) can inhibit the activation of phosphoinositide 3‑kinase (PI3K) to affect phosphorylation of Akt. Importantly, the PI3K/PTEN/Akt signaling pathway is associated with various types of tumors, chronic inflammatory diseases, and autoimmune disease through its regulation of cell growth, apoptosis, proliferation, and metabolism...
October 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29114410/can-sevoflurane-induce-micronuclei-formation-in-nasal-epithelial-cells-of-adult-patients
#14
Elvin Kesimci, Erdem Çoşkun, Gökçer Uğur, Togay Müderris, Seval İzdeş, Bensu Karahalil
Objective: Volatile anaesthetics can inhibit the bronchociliary clearence in a dose- and time-dependend way. Moreover, they can have potential mutagenic/carcinogenic effects under chronic exposure. A genotoxicity test -micronuclei assay- was carried out in nasal epithelial cells to analyze the genotoxic effect of sevoflurane in adult patients undergoing general anesthesia. Methods: In this study, micronucleus (MN) assay was conducted using nasal epithelial cells of 37 adult patients (age, 18-65 years) who underwent elective, minor, short surgical procedures under general anaesthesia with sevoflurane...
October 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/29112690/disrupted-epithelial-macrophage-crosstalk-via-spinster-homologue-2-mediated-s1p-signaling-may-drive-defective-macrophage-phagocytic-function-in-copd
#15
Hai B Tran, Hubertus Jersmann, Tung Thanh Truong, Rhys Hamon, Eugene Roscioli, Miranda Ween, Melissa R Pitman, Stuart M Pitson, Greg Hodge, Paul N Reynolds, Sandra Hodge
INTRODUCTION: We have previously established a link between impaired phagocytic capacity and deregulated S1P signaling in alveolar macrophages from COPD subjects. We hypothesize that this defect may include a disruption of epithelial-macrophage crosstalk via Spns2-mediated intercellular S1P signaling. METHODS: Primary alveolar macrophages and bronchial epithelial cells from COPD subjects and controls, cell lines, and a mouse model of chronic cigarette smoke exposure were studied...
2017: PloS One
https://www.readbyqxmd.com/read/29111771/staphylococcus-aureus-alpha-toxin-induces-actin-filament-remodeling-in-human-airway-epithelial-model-cells
#16
Sabine Ziesemer, Ina Eiffler, Alfrun Schönberg, Christian Müller, Falko Hochgräfe, Achim G Beule, Jan-Peter Hildebrandt
Exposure of cultured human airway epithelial model cells (16HBE14o-, S9) to Staphylococcus aureus alpha-toxin (hemolysin A, Hla) induces changes in cell morphology and cell layer integrity which are due to the inability of the cells to maintain stable cell-cell or focal contacts and to properly organize their actin cytoskeleton. The aim of this study was to identify Hla-activated signaling pathways involved in regulating the phosphorylation level of the actin depolymerizing factor cofilin. We used recombinant wild-type Hla (rHla) as well as a variant of Hla (rHla-H35L) that is unable to form functional transmembrane pores to treat immortalized human airway epithelial cells (16HBE14o-, S9) as well as freshly isolated human nasal tissue...
November 7, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29108965/interleukin-1-inhibitory-kappa-b-kinase-epsilon-induced-glycolysis-augment-epithelial-effector-function-and-promote-allergic-airways-disease
#17
Xi Qian, Reem Aboushousha, Cheryl van de Wetering, Shi B Chia, Eyal Amiel, Robert W Schneider, Jos Lj van der Velden, Karolyn G Lahue, Daisy A Hoagland, Dylan T Casey, Nirav Daphtary, Jennifer L Ather, Matthew J Randall, Minara Aliyeva, Kendall E Black, David G Chapman, Lennart K A Lundblad, David H McMillan, Anne E Dixon, Vikas Anathy, Charles G Irvin, Matthew E Poynter, Emiel F M Wouters, Pamela M Vacek, Monique Henket, Florence Schleich, Renaud Louis, Albert van der Vliet, Yvonne M W Janssen-Heininger
BACKGROUND: Emerging studies suggest that enhanced glycolysis accompanies inflammatory responses. Virtually nothing is known about the relevance of glycolysis in allergic asthma. OBJECTIVES: Here we sought to determine if glycolysis is altered in allergic asthma and to address its importance in the pathogenesis of allergic asthma. METHODS: We examined alterations in glycolysis in sputum samples from asthmatics and primary human nasal cells, and used murine models of allergic asthma as well as primary mouse tracheal epithelial cells to evaluate the relevance of glycolysis...
November 3, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29104484/chlorpheniramine-attenuates-histamine-mediated-aquaporin-5-downregulation-in-human-nasal-epithelial-cells-via-suppression-of-nf-%C3%AE%C2%BAb-activation
#18
Yung-Lung Chang, Chun-Shu Lin, Hsing-Won Wang, Kai Ren Jian, Shao-Cheng Liu
Background: Aquaporin 5 (AQP5) is most likely the primary water channel in the human nasal mucosa and acts as a key tight junction protein. The signaling cascades responsible for AQP5 regulation are still works in progress. Objective: This study sought to determine the effects of histamine and chlorpheniramine on AQP5 expression in human nasal epithelial cells (HNEpC) and to detect the signaling cascades responsible for these effects. Methods: HNEpC were cultured with four concentrations of histamine or chlorpheniramine in vitro...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29083535/dexamethasone-attenuates-methacholine-mediated-aquaporin-5-downregulation-in-human-nasal-epithelial-cells-via-suppression-of-nf-%C3%AE%C2%BAb-activation
#19
Yung-Lung Chang, Kai Ren Jian, Chun-Shu Lin, Hsing-Won Wang, Shao-Cheng Liu
BACKGROUND: Cholinergic stimulation plays a major role in inflammatory airway diseases. However, its role in airway surface liquid homeostasis and aquaporin 5 (AQP5) regulation remains unclear. In this study we sought to determine the effects of methacholine and dexamethasone on AQP5 expression in human nasal epithelial cells (HNEpC). METHODS: HNEpC were cultured with methacholine or dexamethasone at 4 concentrations in vitro. The subcellular distribution of AQP5 was explored using immunocytochemistry...
October 30, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/29080226/temporal-expression-of-interleukin-22-interleukin-22-receptor-1-and-interleukin-22-binding-protein-during-experimental-periodontitis-in-rats
#20
S Pan, D Yang, J Zhang, Z Zhang, H Zhang, X Liu, C Li
BACKGROUND AND OBJECTIVE: Interleukin-22 (IL-22), mainly produced by CD4+ T-helper subtypes and innate lymphoid cells at barrier surfaces, is found to involve in several diseases, including diabetes, rheumatoid arthritis, peri-implantitis and chronic rhinosinusitis with nasal polyps. The purpose of this study was to investigate histological changes and the levels of interleukin-22, interleukin-22 receptor 1 (IL-22R1) and interleukin-22-binding protein (IL-22BP) in experimental periodontitis...
October 28, 2017: Journal of Periodontal Research
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