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https://www.readbyqxmd.com/read/29785413/multivariate-analysis-of-inflammatory-endotypes-in-recurrent-nasal-polyposis-in-a-chinese-population
#1
B Wei, F Liu, J Zhang, Y Liu, J Du, S Liu, N Zhang, C Bachert, J Meng
BACKGROUND: Chronic rhinosinusitis with nasal polyps (CRSwNP) remains a challenging clinical problem due to its propensity for recurrence. However, data on the frequency of CRSwNP recurrence after surgery in China are rare. METHODS: 78 CRSwNP patients undergoing functional endoscopic sinus surgery were followed-up for 8 years and classified into recurrent and non-recurrent groups. A cluster analysis of the CRSwNP based on inflammatory endotypes was performed, and the endotypes were secondarily matched with clinical phenotypes...
May 22, 2018: Rhinology
https://www.readbyqxmd.com/read/29784985/chronic-rhinosinusitis-with-nasal-polyps-is-characterized-by-dysbacteriosis-of-the-nasal-microbiota
#2
Thanit Chalermwatanachai, Ramiro Vilchez-Vargas, Gabriele Holtappels, Tim Lacoere, Ruy Jáuregui, Frederiek-Maarten Kerckhof, Dietmar H Pieper, Tom Van de Wiele, Mario Vaneechoutte, Thibaut Van Zele, Claus Bachert
Chronic rhinosinusitis with nasal polyp (CRSwNP) patients are often characterized by asthma comorbidity and a type-2 inflammation of the sinonasal mucosa. The mucosal microbiota has been suggested to be implicated in the persistence of inflammation, but associations have not been well defined. To compare the bacterial communities of healthy subjects with CRSwNP patients, we collected nasal swabs from 17 healthy subjects, 21 CRSwNP patients without asthma (CRSwNP-A), and 20 CRSwNP patients with co-morbid asthma (CRSwNP+A)...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29781561/the-clinical-characteristics-and-histopathological-features-of-chronic-rhinosinusitis-with-unilateral-nasal-polyps-in-136-patients-in-southern-china
#3
Zhuo Chen, Yang Peng, Chew Lip Ng, Peng Jin, Jing Liu, Ying Ying Li, Yan Yan, Yan Hui Liu, Xin Lan Luo, Qian Hui Qiu, De Yun Wang
Based on the presence of nasal polyps (NP) on endoscopy, chronic rhinosinusitis (CRS) has been clinically divided into CRS with nasal polyps (CRSwNP) and CRS without nasal polyps (CRSsNP). While the majority of cases are bilateral, NPs can present unilaterally. CRS with unilateral NP (UNP) is the most common presentation in unilateral polyposis, but there have been few studies on UNP. Lee et al have shown that UNP had more favorable objective surgical outcomes than bilateral disease. This article is protected by copyright...
May 21, 2018: Clinical Otolaryngology
https://www.readbyqxmd.com/read/29778504/solitary-chemosensory-cells-are-a-primary-epithelial-source-of-interleukin-25-in-chronic-rhinosinusitis-with-nasal-polyps
#4
Michael A Kohanski, Alan D Workman, Neil N Patel, Li-Yin Hung, Julie P Shtraks, Bei Chen, Mariel Blasetti, Laurel Doghramji, David W Kennedy, Nithin D Adappa, James N Palmer, De'Broski R Herbert, Noam A Cohen
BACKGROUND: IL-25 can function as an early signal for the respiratory Type 2 response characteristic of allergic asthma and chronic rhinosinusitis with nasal polyps (CRSwNP). In the mouse gut, tuft cells are the epithelial source of IL-25. However, the source of human airway epithelial IL-25 has remained elusive. OBJECTIVE: In this study, we sought to determine if the solitary chemosensory cell (SCC) is the predominant source of IL-25 in the sinonasal epithelium...
May 17, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29777294/impact-of-residual-frontal-recess-cells-on-frontal-sinusitis-after-endoscopic-sinus-surgery
#5
Tsuguhisa Nakayama, Daiya Asaka, Akihito Kuboki, Tetsushi Okushi, Hiromi Kojima
PURPOSE: Endoscopic sinus surgery (ESS) is a well-established treatment for chronic rhinosinusitis (CRS). However, ESS for frontal sinusitis remains complicated and challenging. The aim of this study was to identify the relationship between residual frontal recess cells and primary ESS failure in the frontal sinus. METHODS: We prospectively collected information on 214 sides of 129 patients with CRS who underwent standard ESS from June 2010 to May 2011. To identify risk factors, we retrospectively analyzed clinical data and computed tomography (CT) images before and 3 months after surgery...
May 18, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29775027/-clinical-research-of-different-characteristics-of-fungal-ball-sinusitis
#6
M J Wang, B Zhou, Y C Li, S J Cui, Q Huang
Objective: The aim of this study is to investigate the clinical features of different subtypes of fungal ball sinusitis. Method: Four hundred and forty-nine cases with fungal ball rhinosinusitis (FBS) were involved in this retrospective analysis. The clinical features including symptoms, signs, and imaging scans, pathological results were all collected for each patient and the patients were classified into different subtypes according to these clinical features and the follow-up treatment. Result: In this retrospective study, 449 patients who diagnosed with fungal ball sinusitis were involved...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29775025/-study-on-the-mutation-of-filaggrin-gene-in-nasal-polyps
#7
Q Zhou, W L Bai, J X Li
Objective: The aim of this study is to investigate the relationship between Filaggrin ( FLG ) gene mutations and nasal polyps. Method: Genomic DNA was extract from 48 nasal polyps tissues, and 30 samples of inferior turbinate tissues from normal human controls. Two FLG gene mutation points (R501X and 3321delA) were detected by polymerase chain reaction (PCR) first, then detected by polypropylene gel electrophoresis, and finally gene sequencing. Result: The FLG gene c. 3321delA was found in 2 cases (4.17%) of nasal polyps, both of them were heterozygous mutations...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29775016/-effect-of-salvianolic-acid-b-on-proliferation-and-apoptosis-of-human-nasal-polyps-fibroblasts
#8
D Luo, Y X Zhao, Y H Zhang, Y Zhou, J Ding, Z F Sun
Objective: The aim of this study is to discuss the effects and mechanism of salvianolic acid B (SAB) on the proliferation and apoptosis of human nasal polyps fibroblasts (NPFs). Method: The NPFs were treated with SAB at different concentrations (5, 10, 20, 40 μmol/L). CCK-8 assay was used to determine the inhibition of SAB on the proliferation of NPFs and determined the optimum concentration for the following experiments. The NPFs were divided into four groups: a) control group: the cells were cultured in DMEM without TGF-β1 or salvianolic acid B; b) the TGF-β1 group: the cells were cultured in DMEM containing 5 ng/ml TGF-β1; c) the SAB group: the cells were cultured in DMEM containing SAB at the optimum concentration by CCK-8 assay; d) the TGF-β1+SAB treatment groups: the cells were cultured in DMEM containing 5 ng/ml TGF-β1 and SAB at the optimum concentration by CCK-8 assay...
February 2018: Journal of Clinical Otorhinolaryngology, Head, and Neck Surgery
https://www.readbyqxmd.com/read/29768034/staphylococcus-aureus-induces-mucosal-type-2-immune-response-via-epithelial-cell-derived-cytokines
#9
Feng Lan, Nan Zhang, Gabriele Holtappels, Natalie De Ruyck, Olga Krysko, Koen Van Crombruggen, Harald Braun, Sebastian L Johnston, Nikos G Papadopoulos, Luo Zhang, Claus Bachert
RATIONALE: Chronic rhinosinusitis with nasal polyps is characterized by a T helper cell 2-skewed upper airway inflammation. Mucosal Staphylococcus aureus colonization is found in the majority of nasal polyps patients. Staphylococcus aureus is known to induce type 2 cytokine release via enterotoxins. OBJECTIVES: We investigated the impact of non-enterotoxin producing Staphylococcus aureus on type 2 cytokine release. METHODS: Thymic stromal lymphopoietin, interleukin-33 and type 2 cytokines were assessed in a human mucosal tissue model upon Staphylococcus aureus infection...
May 16, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29767533/sirt1-controls-poly-i-c-dependent-mmp9-activation-in-primary-human-nasal-epithelial-cells
#10
Masanobu Suzuki, Mahnaz Ramezanpour, Clare Cooksley, Jian Li, Yuji Nakamaru, Akihiro Homma, Alkis Psaltis, Peter-John Wormald, Sarah Vreugde
BACKGROUND: Matrix metalloproteinase 9 (MMP9) is thought to be involved in the etiopathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP) and cleaves collagen IV causing hyperpermeability of the basement membrane within mucosal tissue. It is known that MMP9 expression is negatively affected by sirtuin-1 (SIRT-1) in human monocytotic cells, retinal endothelial cells and epithelial carcinoma cells. However, it is unknown which factors affect MMP9 expression and activity in human nasal epithelial cells (HNECs)...
May 16, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29764019/-the-role-of-type-2-innate-lymphoid-cells-in-the-pathogenesis-of-eosinophilic-chronic-rhinosinusitis-with-nasal-polyps
#11
C L Geng, Z M Xing, L S Yu, M Wang, X P Yuan, Y Liu, G Zhang, Z J Wang
Objective: To investigate the type 2 innate lymphoid cells (ILC2s) in eosinophilic nasal polyps, non-eosinophilic nasal polyps and controls, and to compare the characteristics of ILC2s indifferent types of nasal polyp. Methods: Flow cytometric analysis was used to quantify the ILC2s and Th2 cells in tissues from 19 patients with chronic rhinosinusitis with nasal polyp (CRSwNP) and 6 controls. The patients were classified into two groups as eosinophilic chronic rhinosinusitis with nasal polyps (ECRSwNP) and non-eosinophilic chronic rhinosinusitis with nasal polyps (non-ECRSwNP) based on eosinophil counts under hematoxylin-eosin staining...
May 7, 2018: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/29759032/tim-3-expressing-mast-cells-are-present-in-chronic-rhinosinusitis-with-nasal-polyps
#12
Erica Corredera, Binh L Phong, John A Moore, Lawrence P Kane, Stella E Lee
Objectives To identify whether TIM-3 expression is present in the mast cell population within nasal polyps and to determine its correlation with clinical severity in patients with chronic rhinosinusitis with nasal polyposis. Study Design Basic science, translational study. Setting Nasal polyp tissue collected from patients seen at a tertiary care hospital (2015-2016). Subjects and Methods Nasal polyp tissue obtained during functional endoscopic sinus surgery (n = 24) was enzymatically digested into epithelial and stromal fractions...
May 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29759028/reciprocal-predictive-accuracy-of-sinonasal-symptom-severity-nasal-endoscopy-and-frequency-of-past-chronic-rhinosinusitis-exacerbations
#13
Marlene M Speth, Robert A Gaudin, Lloyd P Hoehle, Katie M Phillips, David S Caradonna, Stacey T Gray, Ahmad R Sedaghat
Objective We sought to determine whether chronic rhinosinusitis (CRS) symptom severity, endoscopic exam findings, and acute exacerbation of CRS (AECRS) frequency-all important and distinct clinical manifestations of CRS-would be predictive of each other and, therefore, inform when further assessment of each other metric should be pursued. Study Design Cross-sectional cohort study. Setting Tertiary academic rhinology clinic. Subjects and Methods In total, 241 patients with CRS were prospectively recruited and completed the 22-item Sinonasal Outcome Test (SNOT-22) to reflect CRS symptom severity...
May 1, 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29756404/nasal-fibroscopy-as-a-routine-screening-procedure-of-sinonasal-adenocarcinoma-of-woodworkers-french-longitudinal-case-study
#14
Julie Martin, Flora Vayr, Christophe Paris, Sébastien Vergez, Peggy Krief, Amandine Luc, Julie Corvisier, Ludovic de Gabory, Fabrice Herin
BACKGROUND: The purpose of this study was to assess the relevancy of flexible nasoendoscopy as a routine screening procedure of sinonasal adenocarcinoma among people occupationally exposed to wood dust. METHODS: This study included woodworkers, occupationally exposed to wood dust. Evaluations were scheduled at the time of inclusion (T0) and after a 2-year period (T1). A questionnaire was used for standardized data collection. The score was based on anatomic landmarks on each side that are parts of the olfactory clefts: the area of middle turbinate, the anterior part of the olfactory cleft, the top of the choanal arch, the spheno-ethmoidal recess, the posterior part of the olfactory cleft, and the middle part of the olfactory cleft...
May 13, 2018: Head & Neck
https://www.readbyqxmd.com/read/29755418/microbiome-and-culture-based-analysis-of-chronic-rhinosinusitis-compared-to-healthy-sinus-mucosa
#15
Kerstin Koeller, Daniel P R Herlemann, Tobias Schuldt, Attila Ovari, Ellen Guder, Andreas Podbielski, Bernd Kreikemeyer, Bernhard Olzowy
The role of bacteria in chronic rhinosinusitis (CRS) is still not well understood. Whole microbiome analysis adds new aspects to our current understanding that is mainly based on isolated bacteria. It is still unclear how the results of microbiome analysis and the classical culture based approaches interrelate. To address this, middle meatus swabs and tissue samples were obtained during sinus surgery in 5 patients with CRS with nasal polyps (CRSwNP), 5 patients with diffuse CRS without nasal polyps (CRSsNP), 5 patients with unilateral purulent maxillary CRS (upm CRS) and 3 patients with healthy sinus mucosa...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29754498/axonal-guidance-signaling-pathway-is-suppressed-in-human-nasal-polyps
#16
Dawei Wu, Sarina K Mueller, Angela L Nocera, Kristen Finn, Towia A Libermann, Benjamin S Bleier
Background Dysfunctional innervation might contribute to the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP), but the state of the axonal outgrowth signaling in CRSwNP is unknown. The purpose of this study was to explore the axonal outgrowth pathway-related protein expression in CRSwNP. Methods Institutional review board approved study in which tissue proteomes were compared between control and CRSwNP patients (n = 10/group) using an aptamer-based proteomic array and confirmed by whole transcriptomic analysis...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29749428/accumulation-of-cd69-tissue%C3%A2-resident-memory-t-cells-in-the-nasal-polyps-of-patients-with-chronic-rhinosinusitis
#17
Pascal Ickrath, Norbert Kleinsasser, Xin Ding, Christian Ginzkey, Niklas Beyersdorf, Rudolf Hagen, Thomas Kerkau, Stephan Hackenberg
In patients with chronic rhinosinusitis with nasal polyps (CRSwNP), a relative accumulation of cluster of differentiation (CD)8+ T cells over CD4+ T cells occurs in nasal polyps compared with the peripheral blood. Nasal CD8+ T cells and CD4+ T cells predominantly present an effector memory phenotype. Immunological studies have reported that memory T cells recirculate from the tissues to the peripheral blood and a high percentage of these T cells persist within the tissue. The aim of the present study was to characterize CD69+ sphingosine‑1‑phosphate receptor 1 (S1PR1)‑ tissue resident memory T cells (Trm) in the polyps of patients with CRSwNP...
May 2, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29746583/decreased-expression-of-ccl17-in-the-disrupted-nasal-polyp-epithelium-and-its-regulation-by-il-4-and-il-5
#18
Byoungjae Kim, Hyun-Ji Lee, Nu-Ri Im, Doh Young Lee, Ha Kyun Kim, Cha Young Kang, Il-Ho Park, Seung Hoon Lee, Heung-Man Lee, Sang Hag Lee, Seung-Kuk Baek, Tae Hoon Kim
BACKGROUND: In airway epithelium, thymus and activation-regulated chemokine (CCL17) and macrophage-derived chemokine (CCL22) are induced by defective epithelial barriers such as E-cadherin and attract the effector cells of Th2 immunity. However, the association between the epithelial barrier and CCL17 expression has not been studied in chronic rhinosinusitis with nasal polyp (CRSwNP). Thus, we aimed to evaluate the expression of CCL17 and its regulation by Th cytokines in nasal polyp (NP) epithelial cells...
2018: PloS One
https://www.readbyqxmd.com/read/29744065/emergence-of-nasal-chondrosarcoma-in-a-dog-with-nasal-polyposis
#19
Judd A Sumner, Adrian I Witham, Andrew W Stent, Paul F Wightman, Caroline S Mansfield
Whilst the malignant transformation of nasal polyps or secondary development of nasal neoplasia after chronic inflammation is likely to be relatively rare, this potential complication should be considered, and the clinician should be vigilant for evidence of malignant transformation.
May 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29742315/solitary-chemosensory-cells-producing-interleukin-25-and-group-2-innate-lymphoid-cells-are-enriched-in-chronic-rhinosinusitis-with-nasal-polyps
#20
Neil N Patel, Michael A Kohanski, Ivy W Maina, Vasiliki Triantafillou, Alan D Workman, Charles C L Tong, Edward C Kuan, John V Bosso, Nithin D Adappa, James N Palmer, De'Broski R Herbert, Noam A Cohen
BACKGROUND: Chronic rhinosinusitis with nasal polyps (CRSwNP) is commonly characterized by type-2 inflammation. It is established that group-2 innate lymphoid cells (ILC2s) are a subset of immune cells important in orchestrating mucosal type-2 response. IL-25 is an epithelial-derived cytokine that is a critical activator of ILC2s. Recent evidence demonstrates that specialized taster epithelial cells, such as solitary chemosensory cells (SCCs), may be producers of IL-25. To elucidate the relationship between SCCs and ILC2s in CRSwNP, we sought to quantify ILC2s and SCCs to determine if these cell types are enriched in nasal polyps compared to healthy sinonasal mucosa...
May 9, 2018: International Forum of Allergy & Rhinology
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