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https://www.readbyqxmd.com/read/29785855/optimizing-protein-harvest-from-nasal-brushings-for-determining-local-allergy-responses
#1
Erin C Saricilar, Aneeza Hamizan, Raquel Alvarado, Janet Rimmer, William Sewell, Jessica Tatersall, Henry P Barham, Richard Harvey
Background Rhinitis is a highly prevalent yet often misdiagnosed condition. Patients who have local allergic rhinitis are regularly mislabeled as having a nonallergic etiology. Thus, a highly accurate, reproducible, and noninvasive assessment, which can be performed quickly and with minimal discomfort to the patient, is required. Objective The aim of this research was to identify the efficiency of various nasal brushes as tools for harvest and collection of epithelial proteins and its suitability for identification of rhinitis...
January 1, 2018: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/29781927/a-case-of-corneal-neovascularization-misdiagnosed-as-total-limbal-stem-cell-deficiency
#2
Qihua Le, C Michael Samson, Sophie X Deng
PURPOSE: To report a case of corneal neovascularization misdiagnosed as total limbal stem cell deficiency (LSCD). METHODS: This is a case report of a 61-year-old woman who has a history of bilateral idiopathic scleritis, keratitis, and uveitis for more than 20 years. She was diagnosed with total LSCD in her left eye based on clinical presentation alone and was confirmed as a candidate for limbal transplantation at several major tertiary eye care centers in the United States...
May 16, 2018: Cornea
https://www.readbyqxmd.com/read/29778504/solitary-chemosensory-cells-are-a-primary-epithelial-source-of-interleukin-25-in-chronic-rhinosinusitis-with-nasal-polyps
#3
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/29773884/pathologic-features-and-expression-of-heat-shock-protein-47-in-the-nasal-mucosa-and-lacrimal-sac-does-it-influence-the-surgical-outcome-of-endoscopic-endonasal-dacryocystorhinostomy
#4
Jinhwan Park, Joonsik Lee, Sehyun Baek
PURPOSE: To correlate the pathologic features and heat shock protein 47 (HSP47) expression in the nasal mucosa and lacrimal sac with the surgical outcomes of endoscopic endonasal dacryocystorhinostomy (EDCR). METHODS: Specimens of the nasal mucosa and lacrimal sac over the rhinostomy site were collected during the operation. Haematoxylin-eosin and immunohistochemical staining were performed to determine the pathologic features (inflammation, fibrosis, squamous metaplasia) and the expression of HSP47 in the epithelium and sub-epithelial glands of the nasal mucosa and lacrimal sac...
May 18, 2018: Eye
https://www.readbyqxmd.com/read/29768034/staphylococcus-aureus-induces-mucosal-type-2-immune-response-via-epithelial-cell-derived-cytokines
#5
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
#6
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/29761110/granulomatous-invasive-aspergillus-flavus-infection-involving-the-nasal-sinuses-and-brain
#7
Roopam Jariwal, Arash Heidari, Ahana Sandhu, Janushe Patel, Kamelia Shoaepour, Piruthiviraj Natarajan, Everardo Cobos
Invasive fungal infections are commonly associated with some form of immunosuppression. On the nasal epithelial surface, Aspergillus flavus , under favorable conditions, can aggressively breach multiple cell lines invading the local tissues. We present the case of a 35-year-old woman with granulomatous invasive Aspergillus flavus infection involving the nasal sinuses and the brain. Antifungal agents administered in the previous episodes contained the infection; however, the infected site evolved over time surrounded with calcified tissues in the left maxillary sinus...
January 2018: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29760580/sinonasal-adenoid-cystic-carcinoma-role-of-on-site-fnac-a-case-report
#8
Santosh Tummidi, Kanchan Kothari, Roshni Patil, Shruti S Singhal, Vyoma Shah
Background: Adenoid cystic carcinoma (ACC), a rare tumor of epithelial cell origin, commonly arises from the major salivary glands. Uncommonly it may be found outside the salivary glands and it's especially rare in the nasal cavity. Case presentation: A 71-year female had complaints of swelling at the base of nose, Fine needle aspiration (FNA) from the swelling revealed features of adenoid cystic carcinoma; cell block & IHC for CD-117 was positive. Conclusions: Sino-nasal ACC (SNACC) continues to pose diagnostic and therapeutic challenges to clinicians...
2018: BMC Ear, Nose, and Throat Disorders
https://www.readbyqxmd.com/read/29759032/tim-3-expressing-mast-cells-are-present-in-chronic-rhinosinusitis-with-nasal-polyps
#9
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/29746583/decreased-expression-of-ccl17-in-the-disrupted-nasal-polyp-epithelium-and-its-regulation-by-il-4-and-il-5
#10
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/29745448/early-development-of-the-human-dentition-revisited
#11
REVIEW
Maria Hovorakova, Herve Lesot, Miroslav Peterka, Renata Peterkova
In this review, classical data on the early steps in human odontogenesis are summarized and updated with specific insights into the development of the upper and lower embryonic jaws to help in understanding some oral pathologies. The initial step of human odontogenesis is classically characterized by two parallel horseshoe-shaped epithelial laminae. These originate from the oral epithelium and an ingrowth into the jaw mesenchyme: the internal dental lamina gives rise to deciduous tooth primordia, while the external vestibular lamina represents the developmental base of the oral vestibule...
May 10, 2018: Journal of Anatomy
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
#12
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
https://www.readbyqxmd.com/read/29737509/optical-coherence-tomography-and-confocal-laser-scanning-microscopy-as-non-invasive-tools-in-the-diagnosis-of-sinonasal-inverted-papilloma-a-pilot-study
#13
Attila Óvári, N Starke, T Schuldt, S Schröder, S Zonnur, A Erbersdobler, E Lankenau, O Stachs, T Just, R Mlynski, B Olzowy
Optical coherence tomography (OCT) and confocal laser scanning microscopy (CLSM) are light-based imaging techniques that allow for a visualization of microscopic tissue properties in vivo. Our study was to examine whether they allow for differentiation of inverted papilloma (IP) from nasal polyps (NP). Five cases of IP and NP, respectively, were investigated intraoperatively with OCT and CLSM. Biopsies were taken of the investigated area and were analyzed ex vivo with OCT and CLSM and then underwent HE-staining for standard light microscopy...
May 8, 2018: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29723155/a-pilot-study-exploring-the-impact-of-cardiac-medications-on-ciliary-beat-frequency-possible-implications-for-clinical-management
#14
Rohit S Loomba, Abhinav Bhushan, Adeleye J Afolayan
BACKGROUND: Cilia are involved in several physiologic processes, and at least a single primary cilium can be found on nearly every cell in the human body. Various factors, such as pH, temperature, exposure to medications and toxins can impact ciliary function as is manifested by changes in the ciliary beat frequency. Those with ciliary dyskinesia may also have congenital cardiac malformations and may require care in a cardiac intensive care unit. This study investigates the effect on the ciliary beat frequency of medications frequently used in a cardiac intensive care unit...
May 3, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29721720/comparison-of-paired-human-nasal-and-bronchial-airway-epithelial-cell-responses-to-rhinovirus-infection-and-il-13-treatment
#15
Nicole Roberts, Reem Al Mubarak, David Francisco, Monica Kraft, Hong Wei Chu
BACKGROUND: Because of its advantage as a minimally invasive procedure, nasal brushings have been increasingly used and proposed as a valuable approach to study lower airway diseases in lieu of bronchial epithelial cells. However, there is limited or conflicting evidence pertaining to whether nasal samples can be surrogates to bronchial samples. The goal of the present study is to test whether nasal epithelial cells have similar antiviral and inflammatory responses to IL-13 treatment and rhinovirus infection, a condition mimicking virally induced asthma exacerbation...
May 2, 2018: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/29708545/generation-of-human-nasal-epithelial-cell-spheroids-for-individualized-cystic-fibrosis-transmembrane-conductance-regulator-study
#16
John J Brewington, Erin T Filbrandt, Francis J LaRosa, Jessica D Moncivaiz, Alicia J Ostmann, Lauren M Strecker, John P Clancy
While the introduction of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) modulator drugs has revolutionized care in Cystic Fibrosis (CF), the genotype-directed therapy model currently in use has several limitations. First, rare or understudied mutation groups are excluded from definitive clinical trials. Moreover, as additional modulator drugs enter the market, it will become difficult to optimize the modulator choices for an individual subject. Both of these issues are addressed with the use of patient-derived, individualized preclinical model systems of CFTR function and modulation...
April 11, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29703190/prenatal-fine-particulate-exposure-associated-with-reduced-childhood-lung-function-and-nasal-epithelia-gstp1-hypermethylation-sex-specific-effects
#17
Alison G Lee, Blake Le Grand, Hsiao-Hsien Leon Hsu, Yueh-Hsiu Mathilda Chiu, Kasey J Brennan, Sonali Bose, Maria José Rosa, Kelly J Brunst, Itai Kloog, Ander Wilson, Joel Schwartz, Wayne Morgan, Brent A Coull, Robert O Wright, Andrea A Baccarelli, Rosalind J Wright
BACKGROUND: In utero exposure to particulate matter with an aerodynamic diameter of less than 2.5 μm (PM2.5 ) has been linked to child lung function. Overlapping evidence suggests that child sex and exposure timing may modify effects and associations may be mediated through glutathione S-transferase P1 (GSTP1) methylation. METHODS: We prospectively examined associations among prenatal PM2.5 exposure and child lung function and GSTP1 methylation in an urban pregnancy cohort study...
April 27, 2018: Respiratory Research
https://www.readbyqxmd.com/read/29701897/sirt1-attenuates-murine-allergic-rhinitis-by-downregulated-hmgb-1-tlr4-pathway
#18
Yong Yuan, Qin-Song Liu, Jing Zhao, Hua-Ping Tang, Jie Sun
Conventional allergic rhinitis (AR) treatments have limitations due to the lack of safety and complete cure strategy. We evaluated the effects of Silent information regulator 1 (SIRT1), a multifunctional molecule involved in a variety of inflammatory pathways, on murine AR model. Ovalbumin (OVA)-induced murine model was constructed, and recombinant SIRT1 was administered into the nostril continuously. The expression of SIRT1 was measured at mRNA and protein levels, and the allergic symptoms were evaluated. Protein levels of OVA-specific IgE, leukotriene C4 (LTC4), eosinophil cation protein (ECP), Prostaglandin D2 (PGD2), as well as different inflammatory cytokine mediators in the serum and nasal lavage fluid (NLF) were assessed by ELISA...
April 27, 2018: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/29698614/the-expression-and-functional-analysis-of-cst1-in-intractable-nasal-polyps
#19
Yukinori Kato, Tetsuji Takabayashi, Masafumi Sakashita, Yoshimasa Imoto, Takahiro Tokunaga, Takahiro Ninomiya, Taiyo Morikawa, Kanako Yoshida, Emiko Noguchi, Shigeharu Fujieda
This study found Cystatin SN (CST1), a type 2 cystatin subfamily member, to be highly expressed in nasal polyps from patients with intractable chronic rhinosinusitis with nasal polyps (CRSwNP), using a whole transcript analysis with next-generation sequencing. Eosinophilic chronic rhinosinusitis (ECRS) involves nasal polyps that are refractory and recurrent immediately after endoscopic sinus surgery (ESS). We hypothesized that CST1 may contribute to the pathogenesis of ECRS. The expression of CST1 in nasal polyps from patients with ECRS was examined by mRNA expression levels, using real-time PCR and immunohistochemistry...
April 26, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29696477/imaging-features-of-benign-mass-lesions-in-the-nasal-cavity-and-paranasal-sinuses-according-to-the-2017-who-classification
#20
REVIEW
Hiroyuki Tatekawa, Taro Shimono, Masahiko Ohsawa, Satoshi Doishita, Shinichi Sakamoto, Yukio Miki
The World Health Organization (WHO) 2017 classification of head and neck tumors has been just published and has reorganized tumors of the nasal cavity and paranasal sinuses. In this classification, three new entities (seromucinous hamartoma, NUT carcinoma, and biphenotypic sinonasal sarcoma) were included, while the total number of tumors has been reduced by excluding tumors if they did not occur exclusively or predominantly in this region. Among these entities, benign tumors were classified as sinonasal papillomas, respiratory epithelial lesions, salivary gland tumors, benign soft tissue tumors, or other tumors...
April 25, 2018: Japanese Journal of Radiology
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