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https://www.readbyqxmd.com/read/28822603/the-impact-of-hospital-volume-on-perioperative-outcomes-of-rectal-cancer
#1
F H W Jonker, J A W Hagemans, C Verhoef, J W A Burger
BACKGROUND: The purpose of this study was to investigate the impact of hospital volume on perioperative outcomes of clinical tumour stage (cT)1-3 and cT4 rectal cancer. METHODS: 16.162 patients operated for rectal cancer enrolled in the Dutch Surgical Colorectal Audit were included. Hospitals were divided into low (<20 cases/year), medium (21-50 cases/year) and high (>50 cases/year) volume for cT1-3 rectal cancer, and for cT4 rectal cancer into low (1-4 cases/year), medium (5-9 cases/year) and high (≥10 cases/year) volume...
July 29, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28817102/anticancer-activity-of-ramalin-a-secondary-metabolite-from-the-antarctic-lichen-ramalina-terebrata-against-colorectal-cancer-cells
#2
Sung-Suk Suh, Tai Kyoung Kim, Jung Eun Kim, Ju-Mi Hong, Trang Thu Thi Nguyen, Se Jong Han, Ui Joung Youn, Joung Han Yim, Il-Chan Kim
Colorectal cancer is a leading cause of death worldwide and occurs through the highly complex coordination of multiple cellular pathways, resulting in carcinogenesis. Recent studies have increasingly revealed that constituents of lichen extracts exhibit potent pharmaceutical activities, including anticancer activity against various cancer cells, making them promising candidates for new anticancer therapeutic drugs. The main objective of this study was to evaluate the anticancer capacities of ramalin, a secondary metabolite from the Antarctic lichen Ramalina terebrata, in the human colorectal cancer cell line HCT116...
August 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28815049/multi-target-chimaeric-vlp-as-a-therapeutic-vaccine-in-a-model-of-colorectal-cancer
#3
Braeden Donaldson, Farah Al-Barwani, Simon J Pelham, Katie Young, Vernon K Ward, Sarah L Young
BACKGROUND: Colorectal cancer is responsible for almost 700,000 deaths annually worldwide. Therapeutic vaccination is a promising alternative to conventional treatment for colorectal cancer, using vaccines to induce targeted immune responses against tumour-associated antigens. In this study, we have developed chimaeric virus-like particles (VLP), a form of non-infectious non-replicative subunit vaccine consisting of rabbit haemorrhagic disease virus (RHDV) VP60 capsid proteins containing recombinantly inserted epitopes from murine topoisomerase IIα and survivin...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28814486/serum-ghrelin-is-associated-with-risk-of-colorectal-adenocarcinomas-in-the-atbc-study
#4
Gwen Murphy, Amanda J Cross, Sanford M Dawsey, Frank Z Stanczyk, Farin Kamangar, Stephanie J Weinstein, Philip R Taylor, Satu Männistö, Demetrius Albanes, Christian C Abnet, Neal D Freedman
BACKGROUND: Colorectal cancers are the third most common cancers in women and men in the USA. While dietary and lifestyle factors such as Western diet, physical inactivity and obesity have been linked to an increased risk of this malignancy, the mechanisms for these associations are unclear. GI hormones, including ghrelin, are involved in energy balance by mediating appetite and metabolism; however, the association between ghrelin and colorectal cancer has not been studied. METHODS: We conducted a case-control study nested within the all-male Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study of Finnish smokers (aged 50-69 years) to examine serum ghrelin concentration and colorectal cancer risk...
August 16, 2017: Gut
https://www.readbyqxmd.com/read/28812599/colorectal-cancer-nivolumab-effective-against-msi-tumours
#5
Peter Sidaway
No abstract text is available yet for this article.
August 16, 2017: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/28811822/overall-survival-of-elderly-patients-having-surgery-for-colorectal-cancer-is-comparable-to-younger-patients-results-from-a-south-asian-population
#6
Pramodh Chitral Chandrasinghe, Dileepa Senajith Ediriweera, Thaaqib Nazar, Sumudu Kumarage, Janaki Hewavisenthi, Kemal Ismail Deen
INTRODUCTION: There has been a continuous debate on whether elderly patients with colorectal cancer (CRC) fair worse. The aim of this study is to assess the thirty-day mortality (TDM) and overall survival (OS) of elderly patients undergoing surgery for CRC. METHOD: OS between two groups (≥70 versus <70 years) having surgery for CRC was analyzed. Demographics, tumour characteristics, and serological markers were considered as independent factors. Multivariable analysis was done using the Cox proportional hazard model...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28807241/the-impact-of-radiofrequency-assisted-transection-on-local-hepatic-recurrence-after-resection-of-colorectal-liver-metastases
#7
R Quesada, A Moreno, I Poves, E Berjano, L Grande, F Burdío
Resection is the gold standard in the treatment of liver metastases from colorectal cancer. An internal cooled radiofrequency electrode was described to achieve tissue coagulation to a greater margin width. The aim of this study is to determinate if a RF-assisted transection device (RFAT) has any effect on local hepatic recurrence (LHER) compared to conventional technologies. A study population of 103 patients who had undergone a hepatic surgical resection was retrospectively analysed. Patients were classified into two groups according to the device used: a RF-assisted device (RFAT group; n = 45) and standard conventional devices (control group; n = 58)...
September 2017: Surgical Oncology
https://www.readbyqxmd.com/read/28807224/mesua-ferrea-stem-bark-extract-induces-apoptosis-and-inhibits-metastasis-in-human-colorectal-carcinoma-hct-116-cells-through-modulation-of-multiple-cell-signalling-pathways
#8
Muhammad Asif, Armaghan Shafaei, Aman Shah Abdul Majid, Mohammed Oday Ezzat, Saad S Dahham, Mohamed B Khadeer Ahamed, Chern Ein Oon, Amin Malik Shah Abdul Majid
Considering the great potential of natural products as anticancer agents, the present study was designed to explore the molecular mechanisms responsible for anticancer activities of Mesua ferrea stem bark extract against human colorectal carcinoma. Based on MTT assay results, bioactive sub-fraction (SF-3) was selected for further studies using HCT 116 cells. Repeated column chromatography resulted in isolation of less active α-amyrin from SF-3, which was identified and characterized by GC-MS and HPLC methods...
July 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28806910/multi-target-chimaeric-vlp-as-a-therapeutic-vaccine-in-a-model-of-colorectal-cancer
#9
Braeden Donaldson, Farah Al-Barwani, Simon J Pelham, Katie Young, Vernon K Ward, Sarah L Young
BACKGROUND: Colorectal cancer is responsible for almost 700,000 deaths annually worldwide. Therapeutic vaccination is a promising alternative to conventional treatment for colorectal cancer, using vaccines to induce targeted immune responses against tumour-associated antigens. In this study, we have developed chimaeric virus-like particles (VLP), a form of non-infectious non-replicative subunit vaccine consisting of rabbit haemorrhagic disease virus (RHDV) VP60 capsid proteins containing recombinantly inserted epitopes from murine topoisomerase IIα and survivin...
August 15, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28804596/characterisation-of-tumour-derived-microvesicles-in-cancer-patients-blood-and-correlation-with-clinical-outcome
#10
Kerstin Menck, Annalen Bleckmann, Astrid Wachter, Bianca Hennies, Lena Ries, Matthias Schulz, Marko Balkenhol, Tobias Pukrop, Bawarjan Schatlo, Ulrike Rost, Dirk Wenzel, Florian Klemm, Claudia Binder
To evaluate whether tumour-derived microvesicles (T-MV), originating from the plasma membrane, represent suitable cancer biomarkers, we isolated MV from peripheral blood samples of cancer patients with locally advanced and/or metastatic solid tumours (n = 330, including 79 head & neck cancers, 74 lung cancers, 41 breast cancers, 28 colorectal cancers and 108 with other cancer forms) and controls (n = 103). Whole MV preparations were characterised using flow cytometry. While MV carrying the tumour-associated proteins MUC1, EGFR and EpCAM were found to be enhanced in a tumour-subtype-specific way in patients' blood, expression of the matrix metalloproteinase inducer EMMPRIN was increased independent of tumour type...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28803449/prospective-comparison-between-magnetic-resonance-imaging-and-computed-tomography-in-colorectal-cancer-staging
#11
Frederick H X Koh, Ker-Kan Tan, Lynette L S Teo, Bertrand W L Ang, Yee-Liang Thian
BACKGROUND: Diffusion-weighted (DW) imaging is a functional magnetic resonance imaging (MRI) technique that detects lesions with high cellularity, such as malignant tumours. This prospective study was performed to compare the accuracy of DW-MRI with multidetector computed tomography (MDCT) in staging of colorectal cancer. METHODS: Thirty patients with histologically proven colorectal cancer were prospectively recruited. Each patient underwent both MDCT and DW-MRI of the abdomen-pelvis for primary staging...
August 13, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28801130/prospective-implementation-of-enhanced-recovery-after-surgery-protocols-to-radical-cystectomy
#12
Karl H Pang, Ruth Groves, Suresh Venugopal, Aidan P Noon, James W F Catto
BACKGROUND: Multimodal enhanced recovery after surgery (ERAS) regimens have improved outcomes from colorectal surgery. OBJECTIVE: We report the application of ERAS to patients undergoing radical cystectomy (RC). DESIGN, SETTING, AND PARTICIPANTS: Prospective collection of outcomes from consecutive patients undergoing RC at a single institution. INTERVENTION: Twenty-six components including prehabilitation exercise, same day admission, carbohydrate fluid loading, targeted intraoperative fluid resuscitation, regional local anaesthesia, cessation of nasogastric tubes, omitting oral bowel preparation, avoiding drain use, early mobilisation, chewing gum use, and audit...
August 8, 2017: European Urology
https://www.readbyqxmd.com/read/28800641/high-rbm3-expression-is-associated-with-an-improved-survival-and-oxaliplatin-response-in-patients-with-metastatic-colorectal-cancer
#13
Christina Siesing, Halfdan Sorbye, Anca Dragomir, Per Pfeiffer, Camilla Qvortrup, Fredrik Pontén, Karin Jirström, Bengt Glimelius, Jakob Eberhard
BACKGROUND: High expression of the RNA-binding motif protein 3 (RBM3) has been shown to correlate, with prolonged survival in several malignant diseases and with the benefit of platinum-based chemotherapy in ovarian cancer. The aim of this study was to evaluate RBM3 in metastatic colorectal cancer (mCRC) as a prognostic factor for overall survival and in relation to benefit of first-line chemotherapy. METHODS: Immunohistochemical staining was conducted and evaluated in tumours from 455 mCRC patients...
2017: PloS One
https://www.readbyqxmd.com/read/28798042/colonoscopic-full-thickness-resection-using-an-over-the-scope-device-a-prospective-multicentre-study-in-various-indications
#14
Arthur Schmidt, Torsten Beyna, Brigitte Schumacher, Alexander Meining, Hans-Juergen Richter-Schrag, Helmut Messmann, Horst Neuhaus, David Albers, Michael Birk, Robert Thimme, Andreas Probst, Martin Faehndrich, Thomas Frieling, Martin Goetz, Bettina Riecken, Karel Caca
OBJECTIVE: Endoscopic full-thickness resection (EFTR) is a novel treatment of colorectal lesions not amenable to conventional endoscopic resection. The aim of this prospective multicentre study was to assess the efficacy and safety of the full-thickness resection device. DESIGN: 181 patients were recruited in 9 centres with the indication of difficult adenomas (non-lifting and/or at difficult locations), early cancers and subepithelial tumours (SET). Primary endpoint was complete en bloc and R0 resection...
August 10, 2017: Gut
https://www.readbyqxmd.com/read/28794448/prognostic-impact-of-cd133-expression-in-endometrial-cancer-patients
#15
G Mancebo, J M Sole-Sedeno, O Pino, E Miralpeix, S Mojal, L Garrigos, B Lloveras, P Navarro, J Gibert, M Lorenzo, I Aran, R Carreras, F Alameda
To assess the impact of CD133 expression on the prognosis of endometrioid endometrial carcinoma (EEC). We retrospectively assessed CD133 expression in tissue microarray of 116 surgically treated FIGO I-III EEC. Tumors with ≥10% of CD133-expressing cells were considered CD133-positive (CD133+). On the basis of CD133 expression, clinical and pathological parameters, progression-free survival (PFS) and overall survival (OS) were evaluated. Of the EEC studied 85.2% showed CD133-expressing cells. Only 61% (n = 66) of EEC presented ≥10% of CD133 expressing cells and were considered CD133+...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28791728/smoking-is-associated-with-hypermethylation-of-the-apc-1a-promoter-in-colorectal-cancer-the-colocare-study
#16
Timothy M Barrow, Hagen Klett, Reka Toth, Jürgen Böhm, Biljana Gigic, Nina Habermann, Dominique Scherer, Petra Schrotz-King, Stephanie Skender, Clare Abbenhardt-Martin, Lin Zielske, Martin Schneider, Alexis Ulrich, Peter Schirmacher, Esther Herpel, Hermann Brenner, Hauke Busch, Melanie Boerries, Cornelia M Ulrich, Karin B Michels
Smoking tobacco is a known risk factor for the development of colorectal cancer, and for mortality associated with the disease. Smoking has been reported to be associated with changes in DNA methylation in blood and in lung tumour tissues, although there has been scant investigation of how epigenetic factors may be implicated in the increased risk of developing colorectal cancer. To identify epigenetic changes associated with smoking behaviours, we performed epigenome-wide analysis of DNA methylation in colorectal tumours from 36 never smokers, 47 former smokers and 13 active smokers, and adjacent mucosa from 49 never smokers, 64 former smokers and 18 active smokers...
August 9, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28791360/classical-vegf-notch-and-ang-signalling-in-cancer-angiogenesis-alternative-approaches-and-future-directions-review
#17
Nunzia Caporarello, Gabriella Lupo, Melania Olivieri, Martina Cristaldi, Maria Teresa Cambria, Mario Salmeri, Carmelina Daniela Anfuso
Angiogenesis is the formation of new vessels starting from pre-existing vasculature. Tumour environment is characterized by 'aberrant angiogenesis', whose main features are tortuous and permeable blood vessels, heterogeneous both in their structure and in efficiency of perfusion and very different from normal vessels. Therapeutic strategies targeting the three pathways chiefly involved in tumour angiogenesis, VEGF, Notch and Ang signalling, have been identified to block the vascular supply to the tumour. However, phenomena of toxicity, development of primary and secondary resistance and hypoxia significantly blunted the effects of anti-angiogenic drugs in several tumour types...
August 7, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28790159/functional-imaging-and-circulating-biomarkers-of-response-to-regorafenib-in-treatment-refractory-metastatic-colorectal-cancer-patients-in-a-prospective-phase-ii-study
#18
Khurum Khan, Mihaela Rata, David Cunningham, Dow-Mu Koh, Nina Tunariu, Jens C Hahne, George Vlachogiannis, Somaieh Hedayat, Silvia Marchetti, Andrea Lampis, Mahnaz Darvish Damavandi, Hazel Lote, Isma Rana, Anja Williams, Suzanne A Eccles, Elisa Fontana, David Collins, Zakaria Eltahir, Sheela Rao, David Watkins, Naureen Starling, Jan Thomas, Eleftheria Kalaitzaki, Nicos Fotiadis, Ruwaida Begum, Maria Bali, Massimo Rugge, Eleanor Temple, Matteo Fassan, Ian Chau, Chiara Braconi, Nicola Valeri
OBJECTIVE: Regorafenib demonstrated efficacy in patients with metastatic colorectal cancer (mCRC). Lack of predictive biomarkers, potential toxicities and cost-effectiveness concerns highlight the unmet need for better patient selection. DESIGN: Patients with RAS mutant mCRC with biopsiable metastases were enrolled in this phase II trial. Dynamic contrast-enhanced (DCE) MRI was acquired pretreatment and at day 15 post-treatment. Median values of volume transfer constant (K(trans)), enhancing fraction (EF) and their product KEF (summarised median values of K(trans)× EF) were generated...
August 8, 2017: Gut
https://www.readbyqxmd.com/read/28790093/aggressive-large-cell-neuroendocrine-carcinoma-of-the-sigmoid-colon-in-a-patient-with-ulcerative-colitis
#19
Patrick Stoner, Taban Ghaffaripour, David Cohen
Colonic inflammation seen in inflammatory bowel disease (IBD) predisposes to the development of colorectal adenocarcinoma. In contrast, colorectal neuroendocrine carcinomas (NECs) have rarely been reported in the setting of IBD, and no definitive relationship between these tumours and IBD has been established. Dysplasia from chronic inflammation leading to neuroendocrine cell differentiation may be responsible for NEC development, though this finding has not been seen consistently. We present a case of large-cell neuroendocrine carcinoma of the sigmoid colon in a 65-year-old woman with long-standing ulcerative colitis...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28783719/tumours-with-class-3-braf-mutants-are-sensitive-to-the-inhibition-of-activated-ras
#20
Zhan Yao, Rona Yaeger, Vanessa S Rodrik-Outmezguine, Anthony Tao, Neilawattie M Torres, Matthew T Chang, Matthias Drosten, Huiyong Zhao, Fabiola Cecchi, Todd Hembrough, Judith Michels, Hervé Baumert, Linde Miles, Naomi M Campbell, Elisa de Stanchina, David B Solit, Mariano Barbacid, Barry S Taylor, Neal Rosen
Approximately 200 BRAF mutant alleles have been identified in human tumours. Activating BRAF mutants cause feedback inhibition of GTP-bound RAS, are RAS-independent and signal either as active monomers (class 1) or constitutively active dimers (class 2). Here we characterize a third class of BRAF mutants-those that have impaired kinase activity or are kinase-dead. These mutants are sensitive to ERK-mediated feedback and their activation of signalling is RAS-dependent. The mutants bind more tightly than wild-type BRAF to RAS-GTP, and their binding to and activation of wild-type CRAF is enhanced, leading to increased ERK signalling...
August 2, 2017: Nature
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