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https://www.readbyqxmd.com/read/28550735/clarithromycin-inhibits-tnf-%C3%AE-induced-muc5ac-mucin-gene-expression-via-the-mkp-1-p38mapk-dependent-pathway
#1
Said Ahmad Shah, Hajime Ishinaga, Kazuhiko Takeuchi
Clarithromycin is a 14-membered macrolide antibiotic. Low-dose, long-term macrolide therapy is effective in patients with chronic airway diseases, such as diffuse panbronchitis, chronic bronchitis, and chronic sinusitis. However, the mechanism underlying this clinical efficacy remains unclear. The dual specificity phosphatase MKP-1 (MAPK phosphatase-1), also called DUSP (dual specificity phosphatase-1), was initially identified as an in vitro ERK-specific phosphatase, but depending on the cell type, it can also dephosphorylate other members of the MAPK family, such as p38 and JNK, and thus suppress downstream signaling of these kinases...
May 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28550497/clinicopathological-features-of-intraductal-papillary-neoplasms-of-the-bile-duct-a-comparison-with-intraductal-papillary-mucinous-neoplasm-of-the-pancreas-with-reference-to-subtypes
#2
Yuki Fukumura, Yasuni Nakanuma, Yuko Kakuda, Masaru Takase, Takashi Yao
Intraductal papillary epithelial neoplasms of the pancreatobiliary system (intraductal papillary neoplasm of the bile duct (IPNB) and intraductal papillary mucinous neoplasm (IPMN)) seem to share many clinicopathological features; however, IPNB has not been fully characterized. In order to understand the clinicopathological/immunohistochemical features of IPNB better, we compared 52 cases of IPNB with 42 cases of IPMNs with mural nodules. The IPNB cases were divided into two groups according to their histological similarity and according to five key histological findings...
May 26, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28540449/epidermoid-cysts-are-a-characteristic-feature-of-intrapancreatic-but-not-of-extrapancreatic-accessory-spleens
#3
Kenichi Hirabayashi, Misuzu Yamada, Hirotaka Kono, Atsuko Hadano, Aya Kawanishi, Yumi Takanashi, Yoshiaki Kawaguchi, Toshio Nakagohri, Tetsuya Mine, Naoya Nakamura
Accessory spleens (ASs), ectopic splenic tissue at intrapancreatic and extrapancreatic sites, rarely contain epidermoid cysts. Our aim was to analyze the incidence of epidermoid cysts in ASs and perform an immunohistochemical analysis of its epithelial lining. We included in the study 148 ASs from 135 patients, for which pathological data were available. Eleven were intrapancreatic ASs (IPASs) and 137 were extrapancreatic ASs (EPASs). Six of the eleven (55%) IPASs contained epidermoid cysts, but they were not detected in EPASs...
May 24, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28512587/adenocarcinoma-in-situ-arising-from-brunner-s-gland-treated-by-endoscopic-mucosal-resection
#4
Masaya Iwamuro, Sayo Kobayashi, Nobuya Ohara, Seiji Kawano, Yoshiro Kawahara, Hiroyuki Okada
An 86-year-old Japanese man was presented to our hospital for further investigation of duodenal adenocarcinoma. The tumor was endoscopically resected. Pathological analysis revealed coexistence of gastric foveolar metaplasia and a surrounding hyperplastic Brunner's gland, in addition to an adenocarcinoma component. Immunostaining for MUC5AC and MUC6 confirmed the diagnosis of adenocarcinoma in situ arising from Brunner's gland hyperplasia. This case suggests that although detailed preoperative evaluation is required to determine the depth of tumor invasion, endoscopic resection may be a promising option for the treatment of adenocarcinomas arising from Brunner's gland hyperplasia...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28507586/neutrophil-elastase-stimulates-muc5ac-expression-in-human-biliary-epithelial-cells-a-possible-pathway-of-pkc-nox-ros
#5
Yu Tian, Min Li, Shuodong Wu, Duoliang Wang, Ben Sun, Junqing Xie, Hong Wang
INTRODUCTION: Bacterial infection and bile flow retardation form a vicious cycle which promotes stone formation and recurrence, and it seems that mucin overexpression plays an important role in this process. However, the mechanism of increased mucus secretion in the biliary tract by bacterial infection and its treatment remain unclear. MATERIAL AND METHODS: Human biliary epithelial cells were induced by neutrophil elastase (NE), and H2O2 production in the cell supernatants was detected by a specific kit, and then cells were pretreated with a H2O2 inhibitor, and expression of MUC5AC was detected by real-time polymerase chain reaction (PCR), Western blot, and immunohistochemistry...
April 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28505002/immunohistochemical-classification-of-ampullary-carcinomas-critical-reappraisal-fails-to-confirm-prognostic-relevance-for-recently-proposed-panels-and-highlights-muc5ac-as-a-strong-prognosticator
#6
Yue Xue, Michelle D Reid, Serdar Balci, Brian Quigley, Takashi Muraki, Bahar Memis, Jun Xia, Ezgi Hacihasanoglu, Gabriela Bedolla, Burcin Pehlivanoglu, Grace E Kim, Takuma Tajiri, Nobuyike Ohike, Ritu Aneja, Alyssa M Krasinskas, Volkan Adsay
Recently, immunohistochemistry-based classifications of ampullary carcinomas have been proposed (Ang and colleagues [PMID: 24832159]; Chang and colleagues [PMID: 23439753]). In this study, the prognostic value of Ang/Chang panel markers (CK20, MUC1, MUC2, CDX2) as well as other markers (CK7, MUC5AC, and MUC6) were tested on full-faced sections of 136 ampullary carcinoma resections with substantial (>5 mm) invasion. Immunohistochemistry was correlated with both histologic classification (intestinal [INT], pancreatobiliary [PB], or nontubular based on ≥3/5 observer agreement) and clinical outcome...
May 12, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28490009/clinicopathologic-study-of-biliary-intraepithelial-neoplasia-in-cholangiocarcinoma
#7
Hyo Jung Kim, Jae Seon Kim, Baek Hee Kim, Young-Tae Bak
BACKGROUNDS AND AIMS: Biliary intraepithelial neoplasia (BilIN) is a precursor of cholangiocarcinoma (CC) and it has been associated with several chronic inflammatory conditions. This study aimed to elucidate the prevalence of BilIN in CC and its clinicopathological significance. METHODS: Medical records of 193 patients with histologically confirmed CC were analyzed. We reviewed the pathology findings of 48 patients who underwent curative surgery for CC. RESULTS: Of the 48 patients analyzed, 34 and 14 patients had extrahepatic and intrahepatic CC respectively...
May 11, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28489708/muc1-muc5ac-and-muc6-polymorphisms-helicobacter-pylori-infection-and-gastric-cancer-a-systematic-review-and-meta-analysis
#8
Luca Giraldi, Maria B Michelazzo, Dario Arzani, Roberto Persiani, Roberta Pastorino, Stefania Boccia
The risk of Helicobacter pylori (HP) infection, as well as gastric cancer (GC), in association with genetic polymorphisms of gene encoding for mucins, has been investigated with contradictory results. We carried out this systematic review and meta-analysis to summarize the relationship between MUC1, MUC5AC, and MUC6 polymorphisms and HP infection, as well as GC risk. We searched MEDLINE, ISI Web of Science, Scopus bibliographic databases and the HuGE Navigator database. Odds ratios (ORs) and 95% confidence interval (CI) were calculated to assess the association between the genetic polymorphisms, and HP/GC risk...
May 1, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28487811/curcumin-inhibits-nthi-induced-muc5ac-mucin-overproduction-in-otitis-media-via-upregulation-of-mapk-phosphatase-mkp-1
#9
Anuhya Sharma Konduru, Shingo Matsuyama, Byung-Cheol Lee, Kensei Komatsu, Jian-Dong Li
Otitis media (OM), characterized by the presence of mucus overproduction and excess inflammation in the middle ear, is the most common childhood infection. Nontypeable Haemophilus influenzae (NTHi) pathogen is responsible for approximately one-third of episodes of bacteria-caused OM. Current treatments for bacterial OM rely on the systemic use of antibiotics, which often leads to the emergence of multidrug resistant bacterial strains. Therefore there is an urgent need for developing alternative therapies strategies for controlling mucus overproduction in OM...
2017: International Journal of Inflammation
https://www.readbyqxmd.com/read/28476309/bombesin-receptor-activated-protein-regulates-neutrophil-elastase-induced-mucin-5ac-hypersecretion-in-human-bronchial-epithelial-cells
#10
Qing Xu, Ling-Xiu Chen, Dan-Hua Ran, Wen-Yue Xie, Xiang-Dong Zhou
Bombesin receptor-activated protein (BRAP) is highly expressed in human bronchial epithelial cells. Recent studies have shown that BRAP reduces oxidative stress, inhibits airway inflammation and suppresses nuclear factor kappaB (NF-κB) activity. Mucus overproduction is an important feature in patients with chronic inflammatory airway diseases. Neutrophil elastase (NE) is a potent inducer of mucin5AC (MUC5AC), which is considered the predominant mucin secreted by human airway epithelial cells. Here, we hypothesize that BRAP may regulate NE-induced MUC5AC hypersecretion in a bronchial epithelial cell line (HBE16)...
May 2, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28472984/rhinovirus-c-targets-ciliated-airway-epithelial-cells
#11
Theodor F Griggs, Yury A Bochkov, Sarmila Basnet, Thomas R Pasic, Rebecca A Brockman-Schneider, Ann C Palmenberg, James E Gern
BACKGROUND: The Rhinovirus C (RV-C), first identified in 2006, produce high symptom burdens in children and asthmatics, however, their primary target host cell in the airways remains unknown. Our primary hypotheses were that RV-C target ciliated airway epithelial cells (AECs), and that cell specificity is determined by restricted and high expression of the only known RV-C cell-entry factor, cadherin related family member 3 (CDHR3). METHODS: RV-C15 (C15) infection in differentiated human bronchial epithelial cell (HBEC) cultures was assessed using immunofluorescent and time-lapse epifluorescent imaging...
May 4, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28470400/comparative-radiological-pathological-study-of-biliary-intraductal-tubulopapillary-neoplasm-and-biliary-intraductal-papillary-mucinous-neoplasm
#12
Chia-Hung Wu, Yi-Chen Yeh, Yu-Chuan Tsuei, Li-Kuo Huang, Chia-I Lin, Chien-An Liu, Hsiou-Shan Tseng, Yi-You Chiou, Nai-Chi Chiu
PURPOSE: Biliary tract intraductal tubulopapillary neoplasms (BT-ITPNs) and intraductal papillary mucinous neoplasms (BT-IPMNs) are rare and poorly described. Herein, we examined the magnetic resonance imaging (MRI) features of BT-ITPNs and BT-IPMNs and correlated them with key gross and microscopic pathological findings. METHODS: We retrospectively identified five patients with definitive pathological findings of BT-ITPN and available diagnostic MRI findings. Key MRI features were correlated to the gross and microscopic pathology and compared to those of BT-IPMNs (19 patients)...
May 3, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28466019/plant-proteinase-inhibitor-bbci-modulates-lung-inflammatory-responses-and-mechanic-and-remodeling-alterations-induced-by-elastase-in-mice
#13
Rafael Almeida-Reis, Osmar A Theodoro-Junior, Bruno T M Oliveira, Leandro V Oliva, Alessandra C Toledo-Arruda, Camila R Bonturi, Marlon V Brito, Fernanda D T Q S Lopes, Carla M Prado, Ariana C Florencio, Mílton A Martins, Caroline A Owen, Edna A Leick, Maria L V Oliva, Iolanda F L C Tibério
Background. Proteinases play a key role in emphysema. Bauhinia bauhinioides cruzipain inhibitor (BbCI) is a serine-cysteine proteinase inhibitor. We evaluated BbCI treatment in elastase-induced pulmonary alterations. Methods.  C57BL/6 mice received intratracheal elastase (ELA group) or saline (SAL group). One group of mice was treated with BbCI (days 1, 15, and 21 after elastase instillation, ELABC group). Controls received saline and BbCI (SALBC group). After 28 days, we evaluated respiratory mechanics, exhaled nitric oxide, and bronchoalveolar lavage fluid...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28457223/pepsina-as-a-marker-of-laryngopharyngeal-reflux-detected-in-chronic-rhinosinusitis-patients
#14
Jian-Jun Ren, Yu Zhao, Jing Wang, Xue Ren, Yang Xu, Wenlong Tang, Zhaoping He
Objectives We aimed to confirm the presence of pepsinA in the nasal secretions and tissues of chronic rhinosinusitis (CRS) patients and reveal the relationship between CRS and laryngopharyngeal reflux (LPR). Study Design Cross-sectional study. Setting The study was conducted at the Department of Oto-Rhino-Laryngology, West China Hospital, Sichuan University. Subjects and Methods A total of 32 CRS patients with or without nasal polyps (CRSwNP and CRSsNP, respectively) and 10 normal controls were enrolled in our study...
May 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28453172/phenotypic-classification-of-gastric-signet-ring-cell-carcinoma-and-its-relationship-with-k-ras-mutation
#15
Z F Xiong, J Shi, Z H Fu, H P Wan, L X Tu
We aimed to analyze gastric signet ring cell (SRC) carcinoma subtypes by investigating gastric and intestinal phenotypic marker expression, and explore the relationship between phenotype and K-ras mutation. Immunohistochemistry was performed on 163 SRC carcinoma patient specimens to detect gastric (MUC1, MUC5AC, and MUC6) and intestinal (MUC2 and CDX2) phenotypic markers, and tumors were classified into gastric (G), intestinal (I), and gastrointestinal (GI) phenotypes. DNA was extracted from the formalin-fixed, paraffin-embedded tumor samples, and K-ras mutations in codons 12, 13, and 61 were identified using polymerase chain reaction-based direct DNA sequencing...
April 28, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28451462/pulmonary-adenocarcinoma-with-mucin-production-modulates-phenotype-according-to-common-genetic-traits-a-reappraisal-of-mucinous-adenocarcinoma-and-colloid-adenocarcinoma
#16
Angelica Sonzogni, Fabrizio Bianchi, Alessandra Fabbri, Mara Cossa, Giulio Rossi, Alberto Cavazza, Elena Tamborini, Federica Perrone, Adele Busico, Iolanda Capone, Benedetta Picciani, Barbara Valeri, Ugo Pastorino, Giuseppe Pelosi
Whether invasive mucinous adenocarcinoma (IMA) and colloid adenocarcinoma (ICA) of the lung represent separate tumour entities, or simply lie within a spectrum of phenotypic variability, is worth investigating. Fifteen ICA, 12 IMA, 9 ALK-rearranged adenocarcinomas (ALKA), 8 non-mucinous KRAS-mutated adenocarcinomas (KRASA) and 9 mucinous breast adenocarcinomas (MBA) were assessed by immunohistochemistry for alveolar (TTF1, cytoplasmic MUC1), intestinal (CDX-2, MUC2), gastric (membrane MUC1, MUC6), bronchial (MUC5AC), mesenchymal (vimentin), neuroendocrine (chromogranin A, synaptophysin), sex steroid hormone-related (oestrogen and progesterone receptors), pan-mucinous (HNF4A) and pan-epithelial (keratin 7) lineage biomarkers and by targeted next generation sequencing (TNGS) for 50 recurrently altered cancer genes...
April 2017: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/28435155/contribution-of-mucus-concentration-and-secreted-mucins-muc5ac-and-muc5b-to-the-pathogenesis-of-muco-obstructive-lung-disease
#17
A Livraghi-Butrico, B R Grubb, K J Wilkinson, A S Volmer, K A Burns, C M Evans, W K O'Neal, R C Boucher
No abstract text is available yet for this article.
May 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28432653/analyzing-glycopeptide-isomers-by-combining-differential-mobility-spectrometry-with-electron-and-collision-based-tandem-mass-spectrometry
#18
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
#19
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
#20
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
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