scholarly journals The IL-37–Mex3B–Toll-like receptor 3 axis in epithelial cells in patients with eosinophilic chronic rhinosinusitis with nasal polyps

2020 ◽  
Vol 145 (1) ◽  
pp. 160-172 ◽  
Author(s):  
Jin-Xin Liu ◽  
Bo Liao ◽  
Qi-Hong Yu ◽  
Hai Wang ◽  
Yi-Bo Liu ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Toll Like Receptor ◽  
Eosinophilic Chronic Rhinosinusitis

scholarly journals S100A8 Enhances IL-1β Production from Nasal Epithelial Cells in Eosinophilic Chronic Rhinosinusitis

2021 ◽  
Author(s):  
Ayaka Nakatani ◽  
Takeshi Tsuda ◽  
Yohei Maeda ◽  
Masaki Hayama ◽  
Daisuke Okuzaki ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Expression Profiles ◽  
Allergic Inflammation ◽  
Gene Expression Profiles ◽  
Interleukin 1Β ◽  
Nasal Epithelial Cells ◽  
Human Nasal Epithelial Cells ◽  
Eosinophilic Chronic Rhinosinusitis

Abstract Chronic rhinosinusitis is classified into eosinophilic chronic rhinosinusitis (ECRS) and non-eosinophilic chronic rhinosinusitis (NECRS). ECRS is a refractory allergic disease involving a variety of immune and epithelial cells. S100A8 is a damage-associated molecular pattern that is closely related to allergic inflammation. However, the pathological implications of S100A8 in ECRS have not been clarified. We evaluated the role of S100A8 in the pathogenesis of ECRS. Gene expression profiles of nasal polyps obtained from patients with ECRS or NECRS were evaluated using RNA sequencing. S100A8 was identified as a significantly upregulated gene in nasal polyps associated with ECRS. Immunohistochemistry consistently revealed intense S100A8 staining in nasal polyps from patients with ECRS. Human nasal epithelial cells expressed the receptor for advanced glycation end products and Toll-like receptor 4. Recombinant S100A8 protein induced interleukin-1β secretion in human nasal epithelial cells. Our data demonstrate that S100A8 results in production of interleukin-1β in the nasal epithelium, which may be involved in the pathogenesis of ECRS.

Interaction of thymic stromal lymphopoietin, IL-33, and their receptors in epithelial cells in eosinophilic chronic rhinosinusitis with nasal polyps

Allergy ◽  
2015 ◽  
Vol 70 (9) ◽  
pp. 1169-1180 ◽  
Author(s):  
B. Liao ◽  
P.-P. Cao ◽  
M. Zeng ◽  
Z. Zhen ◽  
H. Wang ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Thymic Stromal Lymphopoietin ◽  
Eosinophilic Chronic Rhinosinusitis

scholarly journals Reduced Local Response to Corticosteroids in Eosinophilic Chronic Rhinosinusitis with Asthma

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 326 ◽  
Author(s):  
Yoshiki Kobayashi ◽  
Akira Kanda ◽  
Yasutaka Yun ◽  
Dan Van Bui ◽  
Kensuke Suzuki ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Airway Inflammation ◽  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Nuclear Translocation ◽  
Uncinate Process ◽  
Lower Airway ◽  
Mrna Levels ◽  
Eosinophilic Chronic Rhinosinusitis ◽  
Key Factor

Eosinophilic chronic rhinosinusitis (ECRS), a subgroup of chronic rhinosinusitis with nasal polyps, is recognized as a refractory eosinophilic disorder characterized by both upper and lower airway inflammation. In some severe cases, disease control is poor, likely due to local steroid insensitivity. In this study, we focused on protein phosphatase 2A (PP2A), a key factor regulating glucocorticoid receptor (GR) nuclear translocation, and examined its association with local responses to corticosteroids in eosinophilic airway inflammation. Our results indicated reduced responses to corticosteroids in nasal epithelial cells from ECRS patients with asthma, which were also associated with decreased PP2A mRNA expression. Eosinophil peroxidase stimulates elevated PP2A phosphorylation levels, reducing PP2A protein expression and activity. In addition, mRNA levels of inflammatory mediators (TSLP, IL-25, IL-33, CCL4, CCL5, CCL11, and CCL26) associated with eosinophilic airway inflammation in epithelial cells were increased in nasal polyps (eosinophil-rich areas) compared with those in uncinate process tissues (eosinophil-poor areas) from the same patients. PP2A reduction by siRNA reduced GR nuclear translocation, whereas PP2A overexpression by plasmid transfection, or PP2A activation by formoterol, enhanced GR nuclear translocation. Collectively, our findings indicate that PP2A may represent a promising therapeutic target in refractory eosinophilic airway inflammation characterized by local steroid insensitivity.

Eosinophils Correlate with Epithelial-Mesenchymal Transition in Chronic Rhinosinusitis with Nasal Polyps

ORL ◽  
2021 ◽  
pp. 1-11
Author(s):  
Mingjie Wang ◽  
Yan Sun ◽  
Cheng Li ◽  
Jing Qu ◽  
Bing Zhou
Keyword(s):  
Epithelial Cells ◽  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Epithelial Mesenchymal Transition ◽  
Airway Remodeling ◽  
Eosinophil Infiltration ◽  
Control Group ◽  
Epithelial Tissue ◽  
Mesenchymal Transition ◽  
Eosinophilic Chronic Rhinosinusitis

<b><i>Introduction:</i></b> Chronic inflammation and tissue remodeling always occur together in chronic rhinosinusitis (CRS). Epithelial-mesenchymal transition (EMT) plays a critical role in airway remodeling. <b><i>Objective:</i></b> Changes of epithelial cells in sinus mucosa in different subtypes of CRS, especially in eosinophilic chronic rhinosinusitis with nasal polyps, and the role of EMT and eosinophils (EOS) in airway remodeling are still unknown. <b><i>Methods:</i></b> We included 85 patients in this study. They were divided into 4 groups: a normal control (NC) group, a chronic rhinosinusitis without nasal polyps (CRSsNP) group, an eosinophilic chronic rhinosinusitis with nasal polyps (ECRSwNP) group, and a noneosinophilic chronic rhinosinusitis with nasal polyps (non-ECRSwNP) group. Clinical data were all collected and analyzed. Standard hematoxylin and eosin staining, immunohistochemical staining, and 2-color immunofluorescence staining were performed. Biomarkers of EMT, epithelial cadherin, and vimentin were labeled. The immunohistochemistry results of each group were counted and statistically analyzed. <b><i>Results and Conclusion:</i></b> E-cadherin was downregulated, and vimentin was upregulated in epithelial tissue from the ECRSwNP group, compared with that from the control group and the other groups. The number of vimentin-expressing epithelial cells correlated with sinus CT imaging Lund-Mackay scores (<i>r</i> = 0.560, <i>p</i> &#x3c; 0.001). Moreover, expression levels of vimentin in the epithelium were associated with numbers of infiltrating EOS in tissues (<i>r</i> = 0.710, <i>p</i> &#x3c; 0.001) and the peripheral blood EOS ratio (<i>r</i> = 0.594, <i>p</i> &#x3c; 0.001). EMT occurred in patients with CRSwNP, especially in those with ECRSwNP. Epithelial reprogramming correlates with eosinophil infiltration and disease severity. Eosinophils contributed to impairment of epithelial function and promoted EMT in CRSwNP.

Increased Expression of TXNIP Facilitates Oxidative Stress in Nasal Epithelial Cells of Patients With Chronic Rhinosinusitis With Nasal Polyps

2020 ◽  
pp. 194589242098241
Author(s):  
Hai Lin ◽  
Guangyi Ba ◽  
Ru Tang ◽  
Mingxian Li ◽  
Zhipeng Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Epithelial Cells ◽  
Real Time ◽  
Chronic Rhinosinusitis ◽  
Western Blotting ◽  
Real Time Pcr ◽  
Nasal Polyps ◽  
Sod Activity ◽  
Nasal Tissue ◽  
Sod Assay

Background Oxidative stress plays crucial roles in the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP). Thioredoxin-interacting protein (TXNIP) is essential in the process of triggering oxidative stress. However, its role and mechanism in CRSwNP remain unclear. The present study sought to explore the role and mechanism of TXNIP in the pathogenesis of CRSwNP. Methods Western blotting, real-time PCR and immunohistochemistry (IHC) were employed to assess TXNIP, thioredoxin (TRX) expression in nasal tissue samples from patients with CRSwNP and control subjects. MDA level and SOD activity in nasal tissue homogenates were measured using MDA and SOD Assay Kit. To evaluate the role and mechanism of TXNIP in CRSwNP, human nasal epithelial cells (HNECs) were cultured and stimulated using TXNIP siRNA, with or without N-acetylcysteine (NAC, an ROS scavenger). Western blotting, real-time PCR, ROS detecting dye DCFH-DA, MDA and SOD Assay Kit were performed to assess the effects and mechanisms of stimulators on the cells. Results We found significantly increased levels of TXNIP and decreased levels of TRX protein, mRNA, positive cells, increased MDA level and decreased SOD activity in CRSwNP patients compared with control subjects. In vitro study, significantly altered levels of TXNIP, TRX, MDA, SOD and ROS in HNECs were found following treatment of TXNIP siRNA with or without NAC on HNECs. Conclusion TXNIP expression was increased and TRX expression was decreased in CRSwNP at both protein and mRNA levels. MDA levels were increased and SOD activities were decreased in CRSwNP. TXNIP may have negative association with TRX, and then decrease SOD activities and increase MDA levels, resulting in the upregulation of ROS and oxidative stress in HNECs, which may play a pivotal role in the pathogenesis of CRSwNP. Future studies are expected to further explore the role and mechanism of TXNIP in CRSwNP.

scholarly journals A Global Analysis of Tandem 3′UTRs in Eosinophilic Chronic Rhinosinusitis with Nasal Polyps

PLoS ONE ◽  
2012 ◽  
Vol 7 (11) ◽  
pp. e48997 ◽  
Author(s):  
Peng Tian ◽  
Yu Sun ◽  
Yuxin Li ◽  
Xiang Liu ◽  
Liang Wan ◽  
...  
Keyword(s):  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Global Analysis ◽  
Eosinophilic Chronic Rhinosinusitis

scholarly journals A Potential Role of Group 2 Innate Lymphoid Cells in Eosinophilic Chronic Rhinosinusitis With Nasal Polyps

2021 ◽  
Vol 13 (3) ◽  
pp. 363
Author(s):  
Yan Li ◽  
Wei Wang ◽  
Sun Ying ◽  
Feng Lan ◽  
Luo Zhang
Keyword(s):  
Chronic Rhinosinusitis ◽  
Nasal Polyps ◽  
Potential Role ◽  
Innate Lymphoid Cells ◽  
Lymphoid Cells ◽  
Eosinophilic Chronic Rhinosinusitis ◽  
Group 2

scholarly journals Relationships between IL-17A and Macrophages or MUC5AC in Eosinophilic Chronic Rhinosinusitis and Proposed Pathological Significance

2012 ◽  
Vol 3 (2) ◽  
pp. ar.2012.3.0030 ◽  
Author(s):  
Noritsugu Ono ◽  
Takeshi Kusunoki ◽  
Katsuhisa Ikeda
Keyword(s):  
Airway Inflammation ◽  
Chronic Rhinosinusitis ◽  
Neutrophil Elastase ◽  
Nasal Polyps ◽  
Mucus Hypersecretion ◽  
Promotive Factors ◽  
Chemotactic Protein ◽  
Eosinophilic Chronic Rhinosinusitis ◽  
Semithin Sections ◽  
The Mean

Recently, some researchers have reported that macrophages and neutrophils were related to severe asthma. Mucus hypersecretion and persistent airway inflammation result from increased expression of mucin gene (MUC5AC). Eosinophilic chronic rhinosinusitis (ECRS) is considered as intractable rhinosinusitis. From the viewpoint of “one way one disease,” we examined whether ECRS is associated with infiltrating macrophages, neutrophils, their promotive factors, and MUC5AC. We examined 21 nasal polyps with CRS. Each specimen was fixed in 10% phosphate-buffered formalin, embedded in paraffin, processed routinely, and then prepared as semithin sections (3.5 μm). We immunohistochemically observed the macrophages by using CD68, neutrophils by using neutrophil elastase and the promotive factors, monocyte chemotactic protein (MCP) 1, IL-17A, and IL-8, in both ECRS and non-ECRS. The number of macrophages (CD68+ cells), IL-17A, and MUC5AC+ cells in ECRS were significantly greater than in non-ECRS. The mean number of MCP-1+ cells in ECRS was greater than that in non-ECRS, but not significantly. There was a significant correlation in all cases between IL-17A and macrophages or MUC5AC+ cells. Neither the numbers of neutrophils (positive cells for neutrophil elastase) nor the IL-8+ cells showed any significant differences between ECRS and non-ECRS. Our study suggested that infiltrating macrophages, IL-17A and MUC5AC, as well as eosinophils could have roles in the development of ECRS.

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