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https://www.readbyqxmd.com/read/28432653/analyzing-glycopeptide-isomers-by-combining-differential-mobility-spectrometry-with-electron-and-collision-based-tandem-mass-spectrometry
#1
J Larry Campbell, Takashi Baba, Chang Liu, Catherine S Lane, J C Yves Le Blanc, James W Hager
Differential mobility spectrometry (DMS) has been employed to separate isomeric species in several studies. Under the right conditions, factors such as separation voltage, temperature, the presence of chemical modifiers, and residence time can combine to provide unique signal channels for isomeric species. In this study, we examined a set of glycopeptide isomers, MUC5AC-3 and MUC5AC-13, which bear an N-acetyl-galactosamine (GalNAc) group on either threonine-3 or threonine-13. When analyzed as a mixture, the resulting MS and MS/MS spectra yield fragmentation patterns that cannot discern these convolved species...
April 21, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28430953/gastric-proteins-muc5ac-and-tff1-as-potential-diagnostic-markers-of-colonic-sessile-serrated-adenomas-polyps
#2
Magomed Khaidakov, Keith K Lai, D Roudachevski, Julietta Sargsyan, Hannah E Goyne, Rish K Pai, Laura W Lamps, Curt H Hagedorn
Objectives: A subset of colon cancers originates from sessile serrated adenomas/polyps (SSA/Ps). Our goal was to identify markers for SSA/Ps that could aid in distinguishing them from hyperplastic polyps (HPs). Methods: We performed immunostaining for gastric proteins MUC5AC and TFF1 in formalin-fixed, paraffin-embedded (FFPE) samples of HPs (n = 47), SSA/Ps (n = 37), and normal colon (n = 30). Results: Control mucosa expressed only trace amounts of MUC5AC and TFF1...
November 1, 2016: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28427214/high-mucin-5ac-expression-predicts-adverse-postoperative-recurrence-and-survival-of-patients-with-clear-cell-renal-cell-carcinoma
#3
Haijian Zhang, Yidong Liu, Huyang Xie, Weisi Liu, Qiang Fu, Dengfu Yao, Jiejie Xu, Jianxin Gu
BACKGROUND: Mucin 5AC (MUC5AC), as a member of secreted/gel-forming mucin family, was frequently found to be abnormally expressed in inflammation or malignant diseases. However, the clinic pathologic features and prognostic values of MUC5AC in clear-cell renal cell carcinoma (ccRCC) have not been reported up to now. METHODS: MUC5AC expression was analyzed by immunohistochemistry on tissue microarrays. Kaplan-Meier survival curves, Univariate and Multivariate Cox analysis and newly-established nomogram model were performed to evaluate the prognostic value...
March 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28404587/cic-dux4-induces-small-round-cell-sarcomas-distinct-from-ewing-sarcoma
#4
Toyoki Yoshimoto, Miwa Tanaka, Mizuki Homme, Yukari Yamazaki, Yutaka Takazawa, Cristina R Antonescu, Takuro Nakamura
CIC-DUX4 sarcoma (CDS) or CIC-rearranged sarcoma is a  subcategory of small round cell sarcoma resembling the morphological phenotypes of Ewing sarcoma (ES). Hoever, recent clinicopathologic and molecular genetic analyses indicate that CDS is an independent disease entity from ES. Few ancillary markers have been used in the differential diagnosis of CDS, and additional CDS-specific biomarkers are needed for more definitive classification. Here we report the generation of an ex vivo mouse model for CDS by transducing embryonic mesenchymal cells (eMC) with human CIC-DUX4 cDNA...
April 12, 2017: Cancer Research
https://www.readbyqxmd.com/read/28378512/mulberry-leaf-extract-fermented-with-lactobacillus-acidophilus-a4-ameliorates-5-fluorouracil-induced-intestinal-mucositis-in-rats
#5
Nam Su Oh, Ji Young Lee, Ja Min Lee, Kwang Won Lee, Younghoon Kim
The objective of the present study was to evaluate the effect of mulberry leaf extract fermented with Lactobacillus acidophilus A4 (A4) on intestinal mucositis induced by 5-fluorouracil (5-FU) in a rat model. Male Wistar rats were gavaged with A4, mulberry leaf extract (ME), fermented mulberry leaf extract (FME), or lafutidine (LAF) for 10 days and injected intraperitoneally with 5-FU (150 mg kg(-1) ) or saline (normal control) on day 7 to induce mucositis. After euthanizing the animals, their small and large intestines were removed for evaluation of histopathologic parameters, myeloperoxidase (MPO) activity, mucin content, and mRNA expression of the mucin gene and pro-inflammatory cytokine interleukin (IL)-1β...
April 4, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28373278/flavones-modulate-respiratory-epithelial-innate-immunity-anti-inflammatory-effects-and-activation-of-t2r14
#6
Benjamin M Hariri, Derek B McMahon, Bei Chen, Jenna R Freund, Corrine J Mansfield, Laurel J Doghramji, Nithin D Adappa, James N Palmer, David W Kennedy, Danielle R Reed, Peihua Jiang, Robert J Lee
Chronic rhinosinusitis has a significant impact on patient quality of life, creates billions of dollars of annual healthcare costs, and accounts for ~20% of adult antibiotic prescriptions in the US. Due to the rise of resistant microorganisms, there is a critical need to better understand how to stimulate and/or enhance innate immune responses as a therapeutic modality to treat respiratory infections. We recently identified bitter taste receptors (taste family type 2 receptors, or T2Rs) as important regulators of sinonasal immune responses and potential important therapeutic targets...
April 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28360114/ror%C3%AE-dependent-type-2-innate-lymphoid-cells-are-required-and-sufficient-for-mucous-metaplasia-in-immature-mice
#7
Charu Rajput, Tracy X Cui, Mingyuan Han, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life wheezing associated respiratory tract infection by rhinovirus (RV) is considered a risk factor for asthma development. We have shown that RV infection of 6 day-old BALB/c mice, but not mature mice, induces an asthma-like phenotype which is associated with an increase in the population of type 2 innate lymphoid cells (ILC2s) and dependent on IL-13 and IL-25. We hypothesize that ILC2s are required and sufficient for development of the asthma-like phenotype in immature mice. Mice were infected with RV1B on day 6 of life and treated with vehicle or a chemical inhibitor of retinoic acid receptor-related orphan receptor (ROR)-α, SR3335 (15 mg/kg/day intraperitoneally for 7 days)...
March 30, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28346860/comparison-of-short-term-effects-of-diquafosol-and-rebamipide-on-mucin-5ac-level-on-the-rabbit-ocular-surface
#8
Yuichi Hori, Tomofumi Kageyama, Asuka Sakamoto, Tomoaki Shiba, Masatsugu Nakamura, Takatoshi Maeno
PURPOSE: To investigate the short-term effects of 2 new secretagogue eye drops for dry eye, 3% diquafosol tetrasodium ophthalmic solution (diquafosol) and 2% rebamipide ophthalmic suspension (rebamipide), on the concentration of mucin 5AC (MUC5AC) in rabbit tear fluid and conjunctival goblet cells. METHODS: One dose of artificial tears, diquafosol or rebamipide, was instilled into 8 eyes of Japanese white rabbits. MUC5AC concentration in the tear fluid was examined using the enzyme-linked immunosorbent assay 15 min after instillation and compared with 8 untreated controls...
March 27, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28338651/dichotomy-in-intrahepatic-cholangiocarcinomas-based-on-histologic-similarities-to-hilar-cholangiocarcinomas
#9
Masayuki Akita, Kohei Fujikura, Tetsuo Ajiki, Takumi Fukumoto, Kyoko Otani, Takeshi Azuma, Tomoo Itoh, Yonson Ku, Yoh Zen
Intrahepatic cholangiocarcinomas were classified into two types based on their microscopic appearance. Tumors with histologic similarities to hilar cholangiocarcinomas (predominantly ductal adenocarcinomas with minor tubular components, if present, restricted to the invasive front) were defined as the perihilar type, whereas the others were classified as peripheral cholangiocarcinomas. Among the 47 cases examined in the present study, 26 (55%) were classified as the perihilar type, whereas 21 (45%) were the peripheral type...
March 24, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28321517/long-term-follow-up-study-of-gastric-adenoma-tumor-associated-macrophages-are-associated-to-carcinoma-development-in-gastric-adenoma
#10
Daiki Taniyama, Kiyomi Taniyama, Kazuya Kuraoka, Junichi Zaitsu, Akihisa Saito, Hirofumi Nakatsuka, Naoya Sakamoto, Kazuhiro Sentani, Naohide Oue, Wataru Yasui
BACKGROUND: Some gastric adenomas may progress to adenocarcinoma in a short time, but others remain as adenoma for a long time. METHODS: Among 1138 cases diagnosed as adenoma by biopsy at Kure Medical Association Hospital between 1990 and 2010, 51 adenomas were enrolled. Of these, 28 adenomas (group A) were followed for 60 months or longer with no progression to adenocarcinoma within 60 months, and the other 23 adenomas (group B) were upgraded to carcinoma by consecutive biopsies performed within 1 year after the first biopsy...
March 20, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28321513/clinicopathological-features-of-superficial-non-ampurally-duodenal-epithelial-tumor-gastric-phenotype-of-histology-correlates-to-higher-malignant-potency
#11
Takahito Toba, Naoko Inoshita, Mitsuru Kaise, Kosuke Nomura, Yasutaka Kuribayashi, Masami Tanaka, Satoshi Yamashita, Tsukasa Furuhata, Daisuke Kikuchi, Akira Matsui, Toshifumi Mitani, Toshiro Iizuka, Shu Hoteya
BACKGROUND: Superficial non-ampullary duodenal epithelial tumors (SNADETs) are relatively rare, but they are now being detected more frequently due to advances in endoscopic technology. Nevertheless, the pathological nature of SNADETs remains unclear and a management strategy for these tumors has not been established. METHODS: To elucidate the clinicopathological features, we conducted a retrospective analysis of 138 endoscopically resected SNADETs. Lesions were classified into two groups by histological grade according to the Vienna classification: category 3 (71 lesions, 51...
March 20, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28318118/distinct-expression-of-nk2-homeobox-1-nkx2-1-and-goblet-cell-hyperplasia-in-nasal-polyps-with-different-endotypes
#12
Jintao Du, Luo Ba, Bo Li, Feng Liu, Xianting Hu, Jie Zhang, Yafeng Liu, Junming Xian, Sixi Liu, Huabin Li
BACKGROUND: Decreased expression of airway epithelial-specific transcription factor NK2 homeobox 1 (NKX2-1) was associated with allergic inflammation in asthma patients. However, the expression and role of NKX2-1 in nasal polyps (NPs) with different endotypes were undefined yet. METHODS: We examined the expression of key cytokines (interleukin [IL]-4 IL-5, IL-13, and IL-17A, etc.) and NKX2-1 in NPs with different endotypes and control tissues by immunohistochemistry staining, qualitative polymerase chain reaction (qPCR), enzyme-linked immunosorbent assay (ELISA), and Western blot analysis...
March 20, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28306598/comparing-the-effects-of-particulate-matter-on-the-ocular-surfaces-of-normal-eyes-and-a-dry-eye-rat-model
#13
Ji Yun Han, Boram Kang, Youngsub Eom, Hyo Myung Kim, Jong Suk Song
PURPOSE: To compare the effect of exposure to particulate matter on the ocular surface of normal and experimental dry eye (EDE) rat models. METHODS: Titanium dioxide (TiO2) nanoparticles were used as the particulate matter. Rats were divided into 4 groups: normal control group, TiO2 challenge group of the normal model, EDE control group, and TiO2 challenge group of the EDE model. After 24 hours, corneal clarity was compared and tear samples were collected for quantification of lactate dehydrogenase, MUC5AC, and tumor necrosis factor-α concentrations...
May 2017: Cornea
https://www.readbyqxmd.com/read/28302532/randomized-controlled-crossover-trial-comparing-the-impact-of-sham-or-intranasal-neurostimulation-on-conjunctival-goblet-cell-degranulation
#14
Koray Gumus, Karri L Schuetzle, Stephen C Pflugfelder
PURPOSE: The aim of the study was to investigate the effects of the Oculeve Intranasal Lacrimal Neurostimulator (ILN) on conjunctival goblet cell degranulation. DESIGN: A randomized, double-masked, placebo-controlled crossover trial METHODS: A total of 15 subjects (5 normal and 10 dry eye) were enrolled in a three-visit study consisting of one screening and two separate randomized-masked ILN treatments (sham extranasal or intranasal). Tear meniscus height (TMH) was measured by AS-OCT before and after applications...
March 13, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28302328/experimental-pseudomonas-aeruginosa-mediated-rhino-sinusitis-in-mink
#15
S Kirkeby, A S Hammer, N Høiby, C M Salomonsen
OBJECTIVES: The nasal and sinus cavities in children may serve as reservoirs for microorganisms that cause recurrent and chronic lung infections. This study evaluates whether the mink can be used as an animal model for studying Pseudomonas aeruginosa mediated rhino-sinusitis since there is no suitable traditional animal model for this disease. METHODS: Nasal tissue samples from infected and control mink were fixed in formalin, demineralized, and embedded in paraffin...
May 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28260713/a-case-of-gastric-type-adenoma-with-chief-cell-and-parietal-cell-differentiation-surrounded-by-complete-intestinal-metaplasia
#16
Ryutaro Furukawa, Tsuneo Oyama, Akiko Takahashi, Nobukazu Yorimitsu, Tadakazu Shimoda, Hiroyoshi Ota, Satoshi Shiozawa
A man in his 70s received Helicobacter pylori eradication therapy after endoscopic submucosal dissection (ESD) of the stomach. A small, yellowish, protuberant lesion was later observed on the anterior wall of the lower body of the stomach on surveillance esophagogastroduodenoscopy. Narrow band imaging-magnified endoscopy showed an irregular pit and net-like vascular pattern, with the background mucosa having a light blue crest pattern. A biopsy was performed, which led to a diagnosis of adenoma with a gastric phenotype, so repeat ESD was performed...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
https://www.readbyqxmd.com/read/28255028/gene-signature-driving-invasive-mucinous-adenocarcinoma-of-the-lung
#17
Minzhe Guo, Koichi Tomoshige, Michael Meister, Thomas Muley, Takuya Fukazawa, Tomoshi Tsuchiya, Rebekah Karns, Arne Warth, Iris M Fink-Baldauf, Takeshi Nagayasu, Yoshio Naomoto, Yan Xu, Marcus A Mall, Yutaka Maeda
Though invasive mucinous adenocarcinoma of the lung (IMA) is pathologically distinctive, the molecular mechanism driving IMA is not well understood, which hampers efforts to identify therapeutic targets. Here, by analyzing gene expression profiles of human and mouse IMA, we identified a Mucinous Lung Tumor Signature of 143 genes, which was unexpectedly enriched in mucin-producing gastrointestinal, pancreatic, and breast cancers. The signature genes included transcription factors FOXA3, SPDEF, HNF4A, mucins MUC5AC, MUC5B, MUC3, and an inhibitory immune checkpoint VTCN1/B7-H4 (but not PD-L1/B7-H1)...
April 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28248962/an-engineered-human-conjunctival-like-tissue-to-study-ocular-surface-inflammatory-diseases
#18
Laura García-Posadas, Laura Soriano-Romaní, Antonio López-García, Yolanda Diebold
The aim of this study was to develop a three-dimensional model of the human conjunctiva that can be used to perform physiology and pathophysiology experiments. Fibrin-based matrices (derived from human plasma or plasma cryoprecipitate) were used as scaffolds, and primary cells were obtained from conjunctival tissue. Conjunctival constructs were analyzed by immunofluorescent staining and scanning electron microscopy and cell proliferation was measured with alamarBlue® assay. After characterizing the constructs, four different experimental conditions were analyzed in cryoprecipitate matrices: controls, air-lifted cultures (to increase cell stratification), partially desiccated cultures (to mimic dry eye disease), and IL-13-treated cultures (to mimic allergy)...
2017: PloS One
https://www.readbyqxmd.com/read/28211946/extra-ampullary-duodenal-adenoma-a-clinicopathological-study
#19
Kazunori Hijikata, Tetsuo Nemoto, Yoshinori Igarashi, Kazutoshi Shibuya
AIM: Extra-ampullary duodenal adenoma (EADA) is a rare condition with poorly described clinicopathological details. In this study, we aimed to clinicopathologically characterize EADA. METHODS AND RESULTS: We performed a retrospective review of 44 serial cases of EADA. Each EADA was categorized as either gastric-type (n=5) or intestinal-type (n=39). All gastric-type adenomas were located in the first portion of the duodenum and exhibited a pedunculated shape. Gastric-type adenomas were classified into two subtypes: a pyloric gland type and a foveolar type...
February 17, 2017: Histopathology
https://www.readbyqxmd.com/read/28205598/lyn-regulates-mucus-secretion-and-muc5ac-via-the-stat6-signaling-pathway-during-allergic-airway-inflammation
#20
Xiaoyun Wang, Yin Li, Deyu Luo, Xing Wang, Yun Zhang, Zhigang Liu, Nanshan Zhong, Min Wu, Guoping Li
Hypersecretion of mucus is an important component of airway remodeling and contributes to the mucus plugs and airflow obstruction associated with severe asthma phenotypes. Lyn has been shown to down-regulate allergen-induced airway inflammation. However, the role of Lyn in mucin gene expression remains unresolved. In this study, we first demonstrate that Lyn overexpression decreased the mucus hypersecretion and levels of the muc5ac transcript in mice exposed to ovalbumin (OVA). Lyn overexpression also decreased the infiltration of inflammatory cells and the levels of IL-13 and IL-4 in OVA-challenged airways...
February 16, 2017: Scientific Reports
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