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https://www.readbyqxmd.com/read/28445947/characteristics-and-comparison-of-colorectal-cancer-incidence-in-beijing-with-other-regions-in-the-world
#1
Zhongmin Li, Lei Yang, Changzheng Du, Xuedong Fang, Ning Wang, Jin Gu
BACKGROUND: Population-based epidemiologic studies about colorectal cancer are lacking in China. This study aims to provide a basis for colorectal cancer screening and prevention, through analysis and comparisons the characteristics of the trends in colorectal cancer incidence in Beijing and selected representative regions. RESULTS: The annual incidence rate in Beijing region increased significantly, from 9.40/100,000 in 1998 to 18.61/100,000 in 2012. The stratified rate showed that the incidence of distal colon adenocarcinoma increased substantially in men, especially in those aged > 75 years and residing in urban areas...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28438617/tumor-budding-as-a-risk-factor-for-nodal-metastasis-in-pt1-colorectal-cancers-a-meta-analysis
#2
Rocco Cappellesso, Claudio Luchini, Nicola Veronese, Marcello Lo Mele, Erik Rosa-Rizzotto, Ennio Guido, Franca De Lazzari, Pierluigi Pilati, Fabio Farinati, Stefano Realdon, Marco Solmi, Matteo Fassan, Massimo Rugge
Worldwide, colorectal cancer (CRC) screening programs have significantly increased the detection of sub-mucosal (pT1) adenocarcinoma. Completion surgery may be indicated after endoscopic excision of these potentially metastasizing early cancers. However, the post-surgical prevalence of nodal implants does not exceed 15%, leading to questions concerning the clinical appropriateness of any post-endoscopy surgery. Eastern scientific societies (Japanese Society for Cancer of the Colon-Rectum, in particular) include tumor budding (TB), defined as the presence of isolated single cancer cells or clusters of fewer than five cancer cells at the tumor invasive front, among the variables that must be included in histological reports...
April 21, 2017: Human Pathology
https://www.readbyqxmd.com/read/28436468/higher-risk-of-colorectal-cancer-in-patients-with-newly-diagnosed-diabetes-mellitus-before-the-age-of-colorectal-cancer-screening-initiation
#3
Sander de Kort, Ad A M Masclee, Silvia Sanduleanu, Matty P Weijenberg, Myrthe P P van Herk-Sukel, Nico J J Oldenhof, Joop P W van den Bergh, Harm R Haak, Maryska L Janssen-Heijnen
Type 2 diabetes mellitus (T2DM) is associated with greater risk for colorectal cancer (CRC). The age of onset of T2DM is decreasing worldwide. An increased CRC risk in young T2DM patients could be relevant for the age at which to initiate CRC screening. We report on CRC risk in T2DM patients with attention to age of diagnosis. We used pharmacy data (from 1998 to 2010) from the PHARMO Database Network linked to the Eindhoven Cancer Registry. Multivariable time-dependent Cox regression analyses were conducted to calculate hazard ratios (HR) for developing CRC comparing T2DM with non-T2DM...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28435395/prevention-of-pancreatic-cancer
#4
REVIEW
Stefan Kuroczycki-Saniutycz, Agnieszka Grzeszczuk, Zbigniew Wojciech Zwierz, Paweł Kołodziejczyk, Jakub Szczesiul, Beata Zalewska-Szajda, Krystyna Ościłowicz, Napoleon Waszkiewicz, Krzysztof Zwierz, Sławomir Dariusz Szajda
Pancreatic ductal adenocarcinoma (PDA) accounts for 95% of all pancreatic cancers. About 230,000 PDA cases are diagnosed worldwide each year. PDA has the lowest five-year survival rate as compared to others cancers. PDA in Poland is the fifth leading cause of death after lung, stomach, colon and breast cancer. In our paper we have analysed the newest epidemiological research, some of it controversial, to establish the best practical solution for pancreatic cancer prevention in the healthy population as well as treatment for patients already diagnosed with pancreatic cancer...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/28429794/bone-in-culture-array-as-a-platform-to-model-early-stage-bone-metastases-and-discover-anti-metastasis-therapies
#5
Hai Wang, Lin Tian, Amit Goldstein, Jun Liu, Hin-Ching Lo, Kuanwei Sheng, Thomas Welte, Stephen T C Wong, Zbigniew Gugala, Fabio Stossi, Chenghang Zong, Zonghai Li, Michael A Mancini, Xiang H-F Zhang
The majority of breast cancer models for drug discovery are based on orthotopic or subcutaneous tumours. Therapeutic responses of metastases, especially microscopic metastases, are likely to differ from these tumours due to distinct cancer-microenvironment crosstalk in distant organs. Here, to recapitulate such differences, we established an ex vivo bone metastasis model, termed bone-in-culture array or BICA, by fragmenting mouse bones preloaded with breast cancer cells via intra-iliac artery injection. Cancer cells in BICA maintain features of in vivo bone micrometastases regarding the microenvironmental niche, gene expression profile, metastatic growth kinetics and therapeutic responses...
April 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28428902/nonfamilial-juvenile-polyposis-syndrome-with-exon-5-novel-mutation-in-smad-4-gene
#6
Amna Ahmed, Badr Alsaleem
Juvenile polyposis syndrome (JPS) is a rare autosomal dominant hereditary disorder, characterized by multiple juvenile polyps in the gastrointestinal tract and an increased risk of colorectal cancer. JPS is most frequently caused by mutations in the SMAD4 or BMPR1A genes. Herein, we report a child with juvenile polyposis syndrome (JPS) with a novel mutation in the SMAD4 gene. An 8-year-old boy presented with recurrent rectal bleeding and was found to have multiple polyps in the entire colon. The histology of the resected polyps was consistent with juvenile polyps...
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28427387/serum-microrna-profile-in-patients-with-colon-adenomas-or-cancer
#7
Yajie Zhang, Min Li, Yijiang Ding, Zhimin Fan, Jinchun Zhang, Hongying Zhang, Bin Jiang, Yong Zhu
BACKGROUND: Colon cancer, one of the most common causes of cancer-related deaths, arises from adenomatous polyps. In these years, circulating microRNAs (miRNAs) have attracted increasing attention as novel biomarkers for colon cancers. The dysregulated circulating miRNAs in patients with colon adenomas has not been well-understood. METHODS: Here, we aimed to identify miRNA profile in the serum of patients with colon adenomas or colon cancer by using microarray. Then we validated eight differentially expressed miRNAs (DEMs) by qRT-PCR and predicted their targets...
April 20, 2017: BMC Medical Genomics
https://www.readbyqxmd.com/read/28423651/succinate-dehydrogenase-b-deficient-cancer-cells-are-highly-sensitive-to-bromodomain-and-extra-terminal-inhibitors
#8
Satoshi Kitazawa, Shunsuke Ebara, Ayumi Ando, Yuji Baba, Yoshinori Satomi, Tomoyoshi Soga, Takahito Hara
Mutations in succinate dehydrogenase B (SDHB) gene are frequently observed in several tumors and associated with poor prognosis in these tumors. Therefore, drugs effective for SDHB-deficient tumors could fulfill an unmet medical need. In addition, such drugs would have an advantage in that selection of patients with SDHB-mutant cancer could increase the probability of success in clinical trials. Currently, however, the characteristics of SDHB-deficient cancers are not completely understood. Here, we established SDHB knockout cancer cell lines from human colon cancer HCT116 cells using the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 knockout system, and clarified its metabolic characteristics...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423551/metabolic-reprogramming-of-the-premalignant-colonic-mucosa-is-an-early-event-in-carcinogenesis
#9
Mart Dela Cruz, Sarah Ledbetter, Sanjib Chowdhury, Ashish K Tiwari, Navneet Momi, Ramesh K Wali, Charles Bliss, Christopher Huang, David Lichtenstein, Swati Bhattacharya, Anisha Varma-Wilson, Vadim Backman, Hemant K Roy
BACKGROUND: Colorectal cancer (CRC) is the second leading cause of cancer-related mortality in the United States. There is an increasing need for the identification of biomarkers of pre-malignant and early stage CRC to improve risk-stratification and screening recommendations. In this study, we investigated the possibility of metabolic and mitochondrial reprogramming early in the pre-malignant colorectal field. METHODS: Rectal biopsies were taken from 81 patients undergoing screening colonoscopy, and gene expression of metabolic and mitochondrial markers were assessed using real time quantitative PCR...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420554/the-incidence-and-clinical-associated-factors-of-interval-colorectal-cancers-in-southern-taiwan
#10
Cheng-En Tsai, Keng-Liang Wu, Yi-Chun Chiu, Seng-Kee Chuah, Wei-Chen Tai, Ming-Luen Hu, Chih-Ming Liang
BACKGROUND/PURPOSE: Interval colorectal cancer (CRC) is an emerging issue in CRC screening and surveillance. The frequency of interval CRC and its associated factors have not been well studied in Eastern Asia. We aim to clarify the factors associated with interval CRC. METHODS: CRC patients who had negative colonoscopy results 6-36 months prior to cancer diagnosis were defined as cases of interval CRC. Patient characteristics, past history, colon preparation, colonoscopy findings, and pathology were retrospectively evaluated...
April 15, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28415818/mechanistic-characterization-of-a-copper-containing-thiosemicarbazone-with-potent-antitumor-activity
#11
Henning Karlsson, Mårten Fryknäs, Sara Strese, Joachim Gullbo, Gunnar Westman, Ulf Bremberg, Tobias Sjöblom, Tatjana Pandzic, Rolf Larsson, Peter Nygren
BACKGROUND: The thiosemicarbazone CD 02750 (VLX50) was recently reported as a hit compound in a phenotype-based drug screen in primary cultures of patient tumor cells. We synthesized a copper complex of VLX50, denoted VLX60, and characterized its antitumor and mechanistic properties. MATERIALS AND METHODS: The cytotoxic effects and mechanistic properties of VLX60 were investigated in monolayer cultures of multiple human cell lines, in tumor cells from patients, in a 3-D spheroid cell culture system and in vivo and were compared with those of VLX50...
March 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414327/a-novel-antibody-against-cancer-stem-cell-biomarker-dclk1-s-is-potentially-useful-for-assessing-colon-cancer-risk-after-screening-colonoscopy
#12
Shubhashish Sarkar, Vsevolod L Popov, Malaney R O'Connell, Heather L Stevenson, Brian S Lee, Robert A Obeid, Gurinder K Luthra, Pomila Singh
DCLK1 expression is critically required for maintaining growth of human colon cancer cells (hCCCs). Human colorectal tumors (CRCs) and hCCCs express a novel short isoform of DCLK1 (DCLK1-S; isoform 2) from β-promoter of hDCLK1 gene, while normal colons express long isoform (DCLK1-L; isoform 1) from 5'(α)-promoter, suggesting that DCLK1-S, and not DCLK1-L, marks cancer stem cells (CSCs). Even though DCLK1-S differs from DCLK1-L by only six amino acids, we succeeded in generating a monospecific DCLK1-S-Antibody (PS41014), which does not cross-react with DCLK1-L, and specifically detects CSCs...
April 17, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28412271/impact-of-a-new-distal-attachment-on-colonoscopy-performance-in-an-academic-screening-center
#13
Zacharias P Tsiamoulos, Ravi Misra, Rajaratanam Rameshshanker, Timothy R Elliott, Iosif Beintaris, Siwan Thomas-Gibson, Adam Haycock, Noriko Suzuki, Colin Rees, Brian P Saunders
BACKGROUND AND AIMS: Distal attachments placed on the colonoscope tip may positively affect performance by assisting insertion and polyp detection. The Endocuff-original appears to improve adenoma detection rate, but there are no data assessing the performance of the second generation Endocuff-vision. METHODS: A pilot service evaluation study (April-2013/September-2014) was conducted on patients with positive faecal occult blood tests within the National Bowel Cancer Programme during 3 consecutive periods: pre-cuff/no device used, during-cuff/device used and post-cuff/no device used...
April 12, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28410234/the-ovarian-cancer-oncobiome
#14
Sagarika Banerjee, Tian Tian, Zhi Wei, Natalie Shih, Michael D Feldman, George Coukos, James C Alwine, Erle S Robertson
Humans and other mammals are colonized by microbial agents across the kingdom which can represent a unique microbiome pattern. Dysbiosis of the microbiome has been associated with pathology including cancer. We have identified a microbiome signature unique to ovarian cancers, one of the most lethal malignancies of the female reproductive system, primarily because of its asymptomatic nature during the early stages in development. We screened ovarian cancer samples along with matched, and non-matched control samples using our pan-pathogen array (PathoChip), combined with capture-next generation sequencing...
March 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28408224/one-drug-for-two-targets-biological-evaluation-of-antiretroviral-agents-endowed-with-antiproliferative-activity
#15
Lorenzo Botta, Giorgio Maccari, Pierpaolo Calandro, Marika Tiberi, Annalaura Brai, Claudio Zamperini, Filippo Canducci, Mario Chiariello, Rosa Martí-Centelles, Eva Falomir, Miguel Carda
AIDS-related cancer diseases are malignancies with low incidence on healthy people that affect mostly subjects already immunocompromised. The connection between HIV/AIDS and these cancers has not been established yet, but a weakened immune system is certainly the main cause. We envisaged the possibility to screen a small library of compounds synthesized in our laboratory against opportunistic tumors mainly due to HIV infection like Burkitt's Lymphoma. From cellular assays and gene expression analysis we identified two promising compounds...
April 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28405738/evaluation-of-mir-506-and-mir-4316-expression-in-early-and-non-invasive-diagnosis-of-colorectal-cancer
#16
Paweł Krawczyk, Tomasz Powrózek, Tomasz Olesiński, Adam Dmitruk, Joanna Dziwota, Dariusz Kowalski, Janusz Milanowski
PURPOSE: Examination of the entire colon by colonoscopy remains the golden standard for screening of colorectal cancer (CRC). However, patients are reluctant to perform invasive colonoscopies because of interference with their intimacy. Therefore, the potential use of non-invasive analysis of microRNAs expression in liquid biopsy as a novel biomarker for early CRC has investigated in several studies. In this study, we analyzed the expression of two novel microRNAs: miR-506 and miR-4316, which have never been examined in CRC...
April 12, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28405332/association-between-diverticulosis-and-colonic-neoplastic-lesions-in-individuals-with-a-positive-faecal-immunochemical-test
#17
Sergio Morini, Lorenzo Ridola, Cesare Hassan, Roberto Lorenzetti, Roberto Boggi, Massimo Napoli, Silverio Tomao, Angelo Zullo
BACKGROUND: The association between diverticulosis and colonic neoplastic lesions has been suggested, but data in literature are conflicting. This study aimed to investigate such a relationship in patients participating in a colorectal cancer screening program who underwent high-quality colonoscopy. METHODS: Data from consecutive individuals 50-75 years of age with a positive faecal immunological test were considered. Diverticulosis was categorised as present or absent...
February 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28400195/egfr-in-tumor-associated-myeloid-cells-promotes-development-of-colorectal-cancer-in-mice-and-associates-with-outcomes-of-patients
#18
Sriram Srivatsa, Mariel C Paul, Claudia Cardone, Martin Holcmann, Nicole Amberg, Paulina Pathria, Michaela A Diamanti, Markus Linder, Gerald Timelthaler, Hans P Dienes, Lukas Kenner, Fritz Wrba, Gerald W Prager, Stefan Rose-John, Robert Eferl, Giuseppina Liguori, Gerardo Botti, Erika Martinelli, Florian R Greten, Fortunato Ciardiello, Maria Sibilia
BACKGROUND & AIMS: Inhibitors of the epidermal growth factor receptor (EGFR) are the first-line therapy for patients with metastatic colorectal tumors without RAS mutations. However, EGFR inhibitors are ineffective in these patients, and tumor level of EGFR does not associate with response to therapy. We screened human colorectal tumors for EGFR-positive myeloid cells and investigated their association with patient outcome. We also performed studies in mice to evaluate how EGFR expression in tumor cells and myeloid cells contributes to development of colitis-associated cancer and ApcMin-dependent intestinal tumorigenesis...
April 8, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28392435/sex-specific-differences-in-colon-cancer-when-quality-measures-are-adhered-to-results-from-international-prospective-multicenter-clinical-trials
#19
Shrawan G Gaitonde, Aviram Nissan, Mladjan Protić, Alexander Stojadinovic, Zev A Wainberg, David C Chen, Anton J Bilchik
INTRODUCTION: There is no consensus on the relationship between patient sex and the location, stage and oncologic outcome of colon cancer (CC). We hypothesized a sex-specific difference in the biology and management of CC. STUDY DESIGN: Our cohort was drawn from a database of patients enrolled in international trials of nodal ultrastaging for non-metastatic CC. These trials required strict adherence to surgical and pathological quality measures. Postoperative follow-up included colonoscopy at 1 and 4 years and annual CT scans...
April 6, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28389570/bves-regulates-c-myc-stability-via-pp2a-and-suppresses-colitis-induced-tumourigenesis
#20
Bobak Parang, Andrew M Kaz, Caitlyn W Barrett, Sarah P Short, Wei Ning, Cody E Keating, Mukul K Mittal, Rishi D Naik, Mary K Washington, Frank L Revetta, J Joshua Smith, Xi Chen, Keith T Wilson, Thomas Brand, David M Bader, William P Tansey, Ru Chen, Teresa A Brentnall, William M Grady, Christopher S Williams
OBJECTIVE: Blood vessel epicardial substance (BVES) is a tight junction-associated protein that regulates epithelial-mesenchymal states and is underexpressed in epithelial malignancy. However, the functional impact of BVES loss on tumourigenesis is unknown. Here we define the in vivo role of BVES in colitis-associated cancer (CAC), its cellular function and its relevance to patients with IBD. DESIGN: We determined BVES promoter methylation status using an Infinium HumanMethylation450 array screen of patients with UC with and without CAC...
May 2017: Gut
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