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https://www.readbyqxmd.com/read/29786668/scf-c-kit-signaling-increased-mucin2-production-by-maintaining-atoh1-expression-in-mucinous-colorectal-adenocarcinoma
#1
Ping Shen, Shu Yang, Haimei Sun, Guilan Li, Bo Wu, Fengqing Ji, Tingyi Sun, Deshan Zhou
Mucinous colorectal adenocarcinoma (MCA) patients often a show high risk of malignant potential and a poorer survival rate. Given that the pathological feature and oncobiological characteristics of MCA are correlated with its abundant extracellular mucin2 (MUC2), we paid interest toward investigating the key factor that promotes MUC2 production exposure to highly-activated stem cell factor (SCF)/c-KIT signaling, which we believed to contribute to MCA formation. Long-term azoxymethane and dextran sodium sulfate treatment successfully induced MCA only in wild-type (WT) mice at week 37 and 43, while all c-kit loss-of-function mutant mice (Wadsm/m ) developed non-MCA...
May 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29786419/multifunctional-high-molecular-weight-post-translationally-modified-proteins-through-oxidative-cysteine-coupling-and-tyrosine-modification
#2
Brian M Seifried, James Cao, Bradley D Olsen
Glycoproteins and their mimics are challenging to produce via chemical or biological methods because of their long protein backbones and large number of polysaccharide side chains that form a densely grafted protein-polysaccharide brush architecture. Herein, we demonstrate a new approach to protein bioconjugate synthesis that can approach the molar mass and functionalization densities of natural glycoproteins such as mucins and aggrecans. In this method, a tyrosine-enriched protein sequence is engineered and synthesized in E...
May 22, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29786110/multi%C3%A2-layered-prevention-and-treatment-of-chronic-inflammation-organ-fibrosis-and-cancer-associated-with-canonical-wnt-%C3%AE-%C3%A2-catenin-signaling-activation-review
#3
Masaru Katoh
β‑catenin/CTNNB1 is an intracellular scaffold protein that interacts with adhesion molecules (E‑cadherin/CDH1, N‑cadherin/CDH2, VE‑cadherin/CDH5 and α‑catenins), transmembrane‑type mucins (MUC1/CD227 and MUC16/CA125), signaling regulators (APC, AXIN1, AXIN2 and NHERF1/EBP50) and epigenetic or transcriptional regulators (BCL9, BCL9L, CREBBP/CBP, EP300/p300, FOXM1, MED12, SMARCA4/BRG1 and TCF/LEF). Gain‑of‑function CTTNB1 mutations are detected in bladder cancer, colorectal cancer, gastric cancer, liver cancer, lung cancer, pancreatic cancer, prostate cancer and uterine cancer, whereas loss‑of‑function CTNNB1 mutations are also detected in human cancer...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29785550/does-tumor-grade-influence-the-rate-of-lymph-node-metastasis-in-apparent-early-stage-ovarian-cancer
#4
Dimitrios Nasioudis, Spyridon A Mastroyannis, Emily M Ko, Nawar A Latif
PURPOSE: To evaluate the prevalence of regional lymph node (LN) metastasis in patients with non-clear cell epithelial ovarian cancer apparently confined to the ovary, stratified by tumor grade. METHODS: The National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database was accessed (1988-2014). We identified patients with epithelial ovarian carcinoma of serous, endometrioid and mucinous histology apparently confined to the ovary who underwent extensive lymphadenectomy (defined as at least 20 lymph nodes removed)...
May 21, 2018: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29785461/clinical-significance-of-appendiceal-diverticulum-a-significant-marker-for-appendiceal-neoplasia-in-australian-patients
#5
Daniel Leonard Chan, Christopher Lim, Arsalan Bakhtiar, Matthew Khoury, Michelle Smigelski, Dean Yeh, Praveen Ravindran
INTRODUCTION: Diverticula of the appendix (DA) have a reported incidence of up to 2.1%. They are primarily detected incidentally, through imaging and intraoperative or histologic diagnosis. This study's objective was to examine the prevalence of DA, and its relationship with inflammation and neoplasia, as well as review the literature with respect to clinical outcomes and ability to identify DA preoperatively. METHODOLOGY: A retrospective search of all patients undergoing an appendicectomy for right lower quadrant pain at a single institution between 2004 and 2017 was conducted...
May 21, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29785018/pulmonary-adenocarcinoma-with-high-grade-fetal-adenocarcinoma-component-has-a-poor-prognosis-comparable-to-that-of-micropapillary-adenocarcinoma
#6
Masaki Suzuki, Yukio Nakatani, Hiroyuki Ito, Hiroto Narimatsu, Kozo Yamada, Emi Yoshioka, Kota Washimi, Yoichiro Okubo, Kae Kawachi, Yohei Miyagi, Tomoyuki Yokose
Fetal adenocarcinoma is a rare variant of lung adenocarcinoma, which is subcategorized into low-grade and high-grade forms. High-grade fetal adenocarcinoma confers worse prognosis than low-grade fetal adenocarcinoma, but the prognostic differences between high-grade fetal adenocarcinoma and conventional lung adenocarcinoma are unknown. We reviewed tissue sections of 3719 cases of surgically resected primary lung cancers and found 53 lung cancers with a high-grade fetal adenocarcinoma component. We analyzed their clinicopathological and immunohistochemical features, and performed a prognostic analysis of adenocarcinomas with the fetal-type component...
May 21, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29784385/simultaneous-isolation-and-detection-of-single-breast-cancer-cells-using-surface-enhanced-raman-spectroscopy
#7
Melina Yarbakht, Maryam Nikkhah, Ahmad Moshaii, Karina Weber, Christian Matthäus, Dana Cialla-May, Jürgen Popp
Nowadays, cancer is one of the most dangerous and deadly disease all around the world. Cancer that is diagnosed at early stages is more likely to be treated successfully. Treatment of progressed cancer is very difficult, and generally surviving rates are much lower. Therefore, much research has been focused on developing non-invasive methods for detection of cancer and monitoring of its progress. Within this contribution, we present a novel strategy for selective isolation and detection of breast cancer cell lines (MCF-7 and BT-20) based on surface enhanced Raman scattering (SERS)...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29783841/nitration-of-tyrosine-in-the-mucin-glycoprotein-of-edible-bird-s-nest-changes-its-color-from-white-to-red
#8
Eric Kian-Shiun Shim, Soo-Ying Lee
The edible bird's nest (EBN) of the swiftlet Aerodramus fuciphagus, a mucin glycoprotein, is usually white in color, but there also exist the more desirable red or 'blood' EBN. The basis of the red color has been a puzzle for a long time. Here, we show that the nitration of the tyrosyl residue to the 3-nitrotyrosyl (3-NTyr) residue in the glycoprotein is the cause of the red color. Evidences for the 3-NTyr residue come from: (a) the quantitative analysis of 3-NTyr in EBN by ELISA, (b) the UV-Vis absorption spectra of red EBN as a function of pH being similar to 3-nitrotyrosine (3-NT), (c) the change in the color of red EBN from yellow at low pH to red at high pH just like 3-NT, and (d) strong Raman nitro bands at 1330 cm-1 (symmetric -NO2 stretch) and 825 cm-1 (-NO2 scissoring bend) for red EBN...
May 22, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29783809/-mucinous-cystadenocarcinoma-of-ovary-associated-with-neuroendocrine-carcinoma-primary-ovarian-pulmonary-type-small-cell-carcinoma-report-of-a-case
#9
L M Qu, Y P Zhong, L Guo, J S Ni
No abstract text is available yet for this article.
May 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29783799/-primary-carcinoid-of-ovary-a-clinicopathologic-analysis-of-17-cases
#10
R Zhu, X W Xue, Y F Luo, H W Wu, Z Huo
Objective: To study the clinicopathologic feature, diagnostic strategy and prognostic significance of primary carcinoid of the ovary (PCOTO). Methods: A series of 17 patients previously diagnosed as PCOTO at Department of Pathology, Peking Union Medical College Hospital during the period from 2002 to 2017 were evaluated with clinical data analysis, histopathology and immunohistochemistry, and the patients were followed up and the relevant literatures were reviewed. Results: The age of patients ranged from 24 to 64 years (mean, 42 years)...
May 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29783653/avian-influenza-virus-subtype-h9n2-affects-intestinal-microbiota-barrier-structure-injury-and-inflammatory-intestinal-disease-in-the-chicken-ileum
#11
Hongxin Li, Xiaolin Liu, Feiyang Chen, Kejing Zuo, Che Wu, Yiming Yan, Weiguo Chen, Wencheng Lin, Qingmei Xie
Avian influenza virus subtype H9N2 (H9N2 AIV) has caused significant losses to the poultry industry due to the high mortality associated with secondary infections attributable to E. coli . This study tries to address the underlying secondary mechanisms after H9N2 AIV infection. Initially, nine day-old specific pathogen-free chickens were assigned to control (uninfected) and H9N2-infected groups, respectively. Using Illumina sequencing, histological examination, and quantitative real-time PCR, it was found that H9N2 AIV caused intestinal microbiota disorder, injury, and inflammatory damage to the intestinal mucosa...
May 18, 2018: Viruses
https://www.readbyqxmd.com/read/29783620/binding-of-helicobacter-pylori-to-human-gastric-mucins-correlates-with-binding-of-tff1
#12
Ciara Dunne, Julie Naughton, Gina Duggan, Catherine Loughrey, Michelle Kilcoyne, Lokesh Joshi, Stephen Carrington, Helen Earley, Steffen Backert, Catherine Robbe Masselot, Felicity E B May, Marguerite Clyne
Helicobacter pylori binds to the gastric mucin, MUC5AC, and to trefoil factor, TFF1, which has been shown to interact with gastric mucin. We examined the interactions of TFF1 and H. pylori with purified gastrointestinal mucins from different animal species and from humans printed on a microarray platform to investigate whether TFF1 may play a role in locating H. pylori in gastric mucus. TFF1 bound almost exclusively to human gastric mucins and did not interact with human colonic mucins. There was a strong correlation between binding of TFF1 and H...
May 18, 2018: Microorganisms
https://www.readbyqxmd.com/read/29782466/mucin-expression-in-colorectal-cancer-crc-systematic-review-and-meta-analysis
#13
Yaron Niv, Theodore Rokkas
BACKGROUND: A body of evidence has suggested that mucins play an important role in adhesion, invasion, and cancer metastasis. However, this evidence is scarce and sometimes confusing. OBJECTIVE: We performed a systematic review and meta-analysis of available studies to better define the role of mucins in the behavior of colorectal cancer (CRC). METHODS: Medical literature was searched through November 30, 2017, using suitable keywords. Pooled estimates, that is, odd ratios (ORs), were obtained using fixed or random-effects models, as appropriate...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29782143/anti-tumor-humoral-and-t-cell-responses-by-mucin-1-conjugates-of-bacteriophage-qb-in-wildtype-mice
#14
Zhaojun Yin, Xuanjun Wu, Katarzyna Kaczanowska, Suttipun Sungsuwan, Marta Comellas-Aragones, Christian Pett, Jin Yu, Claire Baniel, Ulrika Westerlind, M G Finn, Xuefei Huang
Mucin-1 (MUC1) is one of the top ranked tumor associated antigens. In order to generate effective anti-MUC1 immune responses as potential anti-cancer vaccines, MUC1 peptides and glycopeptides have been covalently conjugated to bacteriophage Qb. Immunization of mice with these constructs led to highly potent antibody responses with IgG titers over one million, which are among the highest anti-MUC1 IgG titers reported to date. Furthermore, the high IgG antibody levels persisted for more than six months. The constructs also elicited MUC1 specific cytotoxic T cells, which can selectively kill MUC1 positive tumor cells...
May 21, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29780828/effect-of-formaldehyde-on-human-middle-ear-epithelial-cells
#15
Shin Hye Kim, Ji-Woong Choi, Myung-Whan Suh, Jun Ho Lee, Seung-Ha Oh, Jae-Jun Song, Moo Kyun Park
Formaldehyde (FA) is a familiar indoor air pollutant found in everything from cosmetics to clothing, but its impact on the middle ear is unknown. This study investigated whether FA causes cytotoxicity, inflammation, or induction of apoptosis in human middle ear epithelial cells (HMEECs). Cell viability was investigated using the trypan blue assay and a cell counting kit (CCK-8) in HMEECs treated with FA for 4 or 24 h. The expression of genes encoding the inflammatory cytokine tumor necrosis factor alpha (TNF- α ) and mucin (MUC5AC) was analyzed using RT-PCR...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29780776/preoperative-serum-levels-of-cancer-antigen-125-and-carcinoembryonic-antigen-ratio-can-improve-differentiation-between-mucinous-ovarian-carcinoma-and-other-epithelial-ovarian-carcinomas
#16
Ji Hui Choi, Geum Seon Sohn, Doo Byung Chay, Han Byoul Cho, Jae-Hoon Kim
Objective: The main aim of this study was to evaluate cancer antigen 125 (CA125)/carcinoembryonic antigen (CEA) ratio (CCR), as a reliable marker to differentiate ovarian mucinous carcinoma from other epithelial ovarian carcinomas (EOCs), namely serous, clear cell, and endometrioid carcinomas. Methods: Female patients suffering from different kinds of EOCs whom were subjected to elective surgery at the Gangnam Severance Hospital between January 2008 and December 2016, were included in this study...
May 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29780137/contrast-enhanced-harmonic-eus-imaging-of-pancreatic-mucinous-cystadenocarcinoma
#17
Hidekazu Tanaka, Ken Kamata, Mamoru Takenaka, Masatoshi Kudo
No abstract text is available yet for this article.
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29779470/ascites-derived-extracellular-micrornas-as-potential-biomarkers-for-ovarian-cancer
#18
Luděk Záveský, Eva Jandáková, Vít Weinberger, Luboš Minář, Veronika Hanzíková, Daniela Dušková, Lenka Záveská Drábková, Iveta Svobodová, Aleš Hořínek
Ovarian cancer as the most fatal gynecological malignancy is often manifested by excessive fluid accumulation known as ascites or effusion. Ascites-derived microRNAs (miRNAs) may be closely associated with ovarian cancer progression. However, our knowledge of their roles, altered expression, and clinical outcomes remained limited. In this study, large-scale expression profiling of 754 human miRNAs was performed using real-time quantitative polymerase chain reaction and 384-well TaqMan array human miRNA A and B cards to identify differentially expressed miRNAs between extracellular fraction of the ascitic fluid associated with high-grade serous ovarian carcinomas and control plasma...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29778400/stromal-heterogeneity-in-pancreatic-cancer-and-chronic-pancreatitis
#19
Lena Haeberle, Katja Steiger, Anna Melissa Schlitter, Sami Alexander Safi, Wolfram Trudo Knoefel, Mert Erkan, Irene Esposito
BACKGROUND/OBJECTIVES: An abundant stromal reaction is a hallmark of pancreatic ductal adenocarcinoma (PDAC) and chronic pancreatitis (CP). The cells mainly responsible for the stromal reaction are activated pancreatic stellate cells (PSCs). Despite their crucial role, PSCs are not well characterized. PSCs share characteristics with the better-known hepatic stellate cells (HSCs). The aim of this study was a detailed analysis of PSCs in PDAC and CP. METHODS: Whole-slide specimens of CP (n = 12) and PDAC (n = 10) were studied by histochemistry and immunohistochemistry...
May 12, 2018: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29778250/surgical-management-of-intraductal-papillary-mucinous-neoplasm-with-main-duct-involvement-an-international-expert-survey-and-case-vignette-study
#20
Lianne Scholten, Nadine C M van Huijgevoort, Marco J Bruno, Carlos Fernandez-Del Castillo, Sohei Satoi, Alain Sauvanet, Christopher Wolfgang, Paul Fockens, Suresh T Chari, Marco Del Chiaro, Jeanin E van Hooft, Marc G Besselink
BACKGROUND: The risk of invasive cancer in resected intraductal papillary mucinous neoplasm with main pancreatic duct involvement is 33%-60%. Most guidelines, therefore, advise resection of main duct intraductal papillary mucinous neoplasm and mixed type intraductal papillary mucinous neoplasm in surgically fit patients, although advice on the surgical strategy (partial or total pancreatectomy) differs. We performed a survey amongst international experts to guide the design of future studies and help to prepare for a single international set of guidelines...
May 16, 2018: Surgery
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