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colorectal cancer and early detection

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https://www.readbyqxmd.com/read/28078115/usefulness-and-feasibility-of-endoscopic-submucosal-dissection-for-colorectal-tumor-a-nationwide-multicenter-retrospective-study-in-korea
#1
Ji Hye Kim, Il Hyun Baek, Kyoung Oh Kim, Hyun Joo Jang, Gwang Ho Baik, Chang Kyun Lee, Kyeong Won Min
BACKGROUND: Detection rate of precursor lesion of colorectal cancer and early colon cancer have recently been rising because of increased screening endoscopy and increased incidence of colorectal cancer. Endoscopic submucosal dissection (ESD) technique has been reported to be useful in the treatment of such superficial lesions in colon. However, nationwide multicenter study for usefulness and feasibility of colorectal ESD is still limited. METHODS: From January 2009 to February 2014, colorectal ESD data performed at nationwide university hospitals were enrolled in retrospective design...
December 2016: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28075351/circulating-nucleosomes-and-nucleosome-modifications-as-biomarkers-in-cancer
#2
REVIEW
Peter McAnena, James A L Brown, Michael J Kerin
Traditionally the stratification of many cancers involves combining tumour and clinicopathological features (e.g., patient age; tumour size, grade, receptor status and location) to inform treatment options and predict recurrence risk and survival. However, current biomarkers often require invasive excision of the tumour for profiling, do not allow monitoring of the response to treatment and stratify patients into broad heterogeneous groups leading to inconsistent treatment responses. Here we explore and describe the benefits of using circulating biomarkers (nucleosomes and/or modifications to nucleosomes) as a non-invasive method for detecting cancer and monitoring response to treatment...
January 8, 2017: Cancers
https://www.readbyqxmd.com/read/28062797/targeted-proteomics-for-multiplexed-verification-of-markers-of-colorectal-tumorigenesis
#3
Anuli Christiana Uzozie, Nathalie Selevsek, Asa Wahlander, Paolo Nanni, Jonas Grossmann, Achim Weber, Federico Buffoli, Giancarlo Marra
Targeted proteomic methods can accelerate the verification of multiple tumor marker candidates in large series of patient samples. We utilized the targeted approach known as selected / multiple reaction monitoring (SRM/MRM) to verify potential protein markers of colorectal adenoma identified by our group in previous transcriptomic and quantitative shotgun proteomic studies of a large cohort of precancerous colorectal lesions. We developed SRM assays to reproducibly detect and quantify 25 (62.5%) of the 40 selected proteins in an independent series of precancerous and cancerous tissue samples (19 adenoma/normal mucosa pairs; 17 adenocarcinoma/normal mucosa pairs)...
January 4, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28061475/potential-roles-of-micrornas-and-ros-in-colorectal-cancer-diagnostic-biomarkers-and-therapeutic-targets
#4
Jingmei Lin, Chia-Chen Chuang, Li Zuo
As one of the most commonly diagnosed cancers worldwide, colorectal adenocarcinoma often occurs sporadically in individuals aged 50 or above and there is an increase among younger patients under 50. Routine screenings are recommended for this age group to improve early detection. The multifactorial etiology of colorectal cancer consists of both genetic and epigenetic factors. Recently, studies have shown that the development and progression of colorectal cancer can be attributed to aberrant expression of microRNA...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060757/line-1-hypomethylation-status-of-circulating-cell-free-dna-in-plasma-as-a-biomarker-for-colorectal-cancer
#5
Yuzo Nagai, Eiji Sunami, Yoko Yamamoto, Keisuke Hata, Satoshi Okada, Koji Murono, Koji Yasuda, Kensuke Otani, Takeshi Nishikawa, Toshiaki Tanaka, Tomomichi Kiyomatsu, Kazushige Kawai, Hiroaki Nozawa, Soichiro Ishihara, Dave S B Hoon, Toshiaki Watanabe
Colorectal cancer (CRC) is a serious public health problem and non-invasive biomarkers improving diagnosis or therapy are strongly required. Circulating cell-free DNA (cfDNA) has been a promising target for this purpose. In this study, we evaluated the potential of long interspersed nuclear element-1 (LINE-1) hypomethylation as a blood biomarker for CRC. LINE-1 hypomethylation level in plasma cfDNA in 114 CRC patients was retrospectively examined by absolute quantitative analysis of methylated alleles real-time PCR, and was expressed using LINE-1 hypomethylation index (LHI) [unmethylated copy number/ (methylated copy number + unmethylated copy number)]...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060554/current-molecular-and-genetic-aspects-of-pancreatic-cancer-the-role-of-metastasis-associated-proteins-mta-a-review
#6
Efstathios T Pavlidis, Theodoros E Pavlidis
: Purpose/aim: To focus on current molecular and genetic aspects and MTA proteins, since pancreatic cancer is a lethal malignant with poor prognosis. Early diagnosis is essential step, contributing to potential curative resection. MATERIALS AND METHODS: A PubMed search of relevant articles published up to August 2016 was performed to identify current information about pancreatic cancer regarding molecular biomarkers, with emphasis on carcinogenesis, novel therapeutic targets, and MTA proteins...
January 6, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28056946/factors-associated-with-mode-of-colorectal-cancer-detection-and-time-to-diagnosis-a-population-level-study
#7
Khokan C Sikdar, James Dickinson, Marcy Winget
BACKGROUND: Although it is well-known that early detection of colorectal cancer (CRC) is important for optimal patient survival, the relationship of patient and health system factors with delayed diagnosis are unclear. The purpose of this study was to identify the demographic, clinical and healthcare factors related to mode of CRC detection and length of the diagnostic interval. METHODS: All residents of Alberta, Canada diagnosed with first-ever incident CRC in years 2004-2010 were identified from the Alberta Cancer Registry...
January 5, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28052691/strategies-to-prevent-peritoneal-carcinomatosis-arising-from-colorectal-cancer
#8
Maximiliano Gelli, Janina Fl Hugueinin, Cecilia Cerebelli, Léonor Benhaim, Charles Honoré, Dominique Elias, Diane Goéré
In the last decades, cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy became a curative option for peritoneal metastases in selected patients, otherwise considered for palliative therapy alone. Better knowledge of physiopathology of peritoneal spread and identification of predictive factors for peritoneal relapse prompted specialized centers to investigate the role of a 'proactive approach' in order to early detect peritoneal metastasis. These encouraging data could justify an active attitude in selected patients at high risk of peritoneal recurrence after curative resection of primary tumor...
January 5, 2017: Future Oncology
https://www.readbyqxmd.com/read/28050749/evaluation-of-18-f-cp18-as-a-substrate-based-apoptosis-imaging-agent-for-the-assessment-of-early-treatment-response-in-oncology
#9
Sara Rapic, Christel Vangestel, Filipe Elvas, Jeroen Verhaeghe, Tim Van den Wyngaert, Leonie Wyffels, Patrick Pauwels, Steven Staelens, Sigrid Stroobants
PURPOSE: The substrate-based positron emission tomography (PET) tracer [(18)F]CP18 is capable of detecting the activity of caspase-3/7, two key executioner proteases in the apoptosis pathway, through selective cleavage of the ligand by the activated proteases and subsequent accumulation in apoptotic cells. Using an in vitro and in vivo model of colorectal cancer (CRC), we investigated whether [(18)F]CP18 tracer accumulation provides a measure for apoptosis and reliably reflects early treatment response to chemotherapeutics...
January 3, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28040719/cancer-type-and-risk-of-newly-diagnosed-depression-among-elderly-medicare-beneficiaries-with-incident-breast-colorectal-and-prostate-cancers
#10
Monira Alwhaibi, Usha Sambamoorthi, Suresh Madhavan, Thomas Bias, Kimberly Kelly, James Walkup
BACKGROUND: Elderly individuals (age >65 years) with cancer are at high risk for newly diagnosed depression after a cancer diagnosis. It is not known whether the risk of newly diagnosed depression varies by cancer type. PURPOSE: To examine the variations in the risk of newly diagnosed depression by cancer type among elderly individuals with cancer. METHODS: This study used a retrospective cohort study design and data from the linked SEER-Medicare files...
January 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28038733/genetic-mutation-risk-calculation-in-lynch-syndrome-inheritance-evaluating-the-utility-of-the-premm1-2-6-model-in-lyon-the-first-french-study
#11
REVIEW
Souria Aissaoui, Charline Cartellier, Thomas Seytier, Sophie Giraud, Alain Calender
Lynch syndrome is due to germline mutations in mismatch repair genes: MLH1, MSH2, MSH6 and PMS2. It is characterized by an increased risk of various cancers including colorectal and endometrial cancers. Early diagnosis of these patients allows for appropriate surveillance and improves survival rates. Differentiating between patients who should undergo genetic testing and those for whom it is not necessary is difficult despite various established criteria (Amsterdam and Bethesda). Often, health professionals meet in multidisciplinary committees (MDC) to discuss patient cases regarding Lynch syndrome...
December 27, 2016: Bulletin du Cancer
https://www.readbyqxmd.com/read/28032524/classifying-circulating-tumor-cells-to-monitor-cancer-progression
#12
Panagiota Economopoulou, Vassilis Georgoulias, Athanasios Kotsakis
The term 'liquid biopsy' refers to molecular analysis of a tumor's genetic features based on circulating genetic material in the peripheral blood derived from circulating tumor cells (CTCs), circulating tumor DNA (ctDNA) and circulating miRNAs, and has emerged as a minimally invasive tool in early cancer diagnosis and disease monitoring. CTCs are believed to originate from the primary tumor and obtain genetic heterogeneity during evolution. Areas covered: The presence of CTCs has been associated with poor clinical outcome in patients with metastatic breast cancer, lung cancer, colorectal cancer and prostate cancer...
December 29, 2016: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28026057/functioning-of-people-with-colorectal-cancer-during-chemotherapy-demographic-and-clinical-determinants-of-quality-of-life-of-patients-with-colorectal-cancer-receiving-chemotherapy-pilot-study
#13
B Goździewicz, M Strugała, D Talarska, J Stanisławska, G Bączyk
Cancer of the colon is one of the most common malignant tumours in both genders. Thanks to the development of diagnostic techniques, lesions can be detected early fostering full patient's recovery. The aim of this study was to investigate factors affecting quality of life of patients with colorectal cancer (CRC) during chemotherapy. The research tool was a questionnaire of our own design that allows collecting demographic and clinical data and Functional Assessment of Cancer Therapy Scale-Colorectal (FACT-C)...
December 27, 2016: European Journal of Cancer Care
https://www.readbyqxmd.com/read/28025471/-new-colonoscopy-devices-to-improve-colon-neoplasm-detection
#14
REVIEW
Sung Jae Shin
Early detection and removal of adenomatous polyps can prevent the development of colorectal cancer. However, it is fairly common-up to 20%-for polyps to be undetected in a colonoscopy due to poor visualization of the proximal aspect of colonic folds and anatomical flexures. To overcome these limitations, many new endoscopes and accessories have been developed. A wide-angle colonoscopy did not improve the detection of adenoma compared with the standard colonoscopy. An extra-wide angle and Retroview colonoscopies showed a significantly lower miss rate of polyps in the colon model...
December 25, 2016: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28019089/biomarker-discovery-by-proteomics-based-approaches-for-early-detection-and-personalized-medicine-in-colorectal-cancer
#15
REVIEW
Claudia Corbo, Armando Cevenini, Francesco Salvatore
About one million people/year develop colorectal cancer (CRC) and approximately half of them die. The extent of the disease (i.e. local invasion at the time of diagnosis) is a key prognostic factor. The 5-year survival rate is almost 90% in the case of delimited CRC and 10% in the case of metastasized CRC. Hence, one of the great challenges in the battle against CRC is to improve early diagnosis strategies. Large-scale proteomic approaches are widely used in cancer research to search for novel biomarkers. Such biomarkers can help in improving the accuracy of the diagnosis and in the optimization of personalized therapy...
December 26, 2016: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28012848/detection-of-sessile-serrated-adenomas-in-proximal-colon-using-wide-field-fluorescence-endoscopy
#16
Bishnu P Joshi, Zhenzhen Dai, Zhenghong Gao, Jeong Hoon Lee, Navin Ghimire, Jing Chen, Anoop Prabhu, Erik J Wamsteker, Richard S Kwon, Grace H Elta, Elena M Stoffel, Asha Pant, Tonya Kaltenbach, Roy M Soetikno, Henry D Appelman, Rork Kuick, D Kim Turgeon, Thomas D Wang
BACKGROUND & AIMS: Many cancers in the proximal colon develop via from sessile serrated adenomas (SSAs), which have flat, subtle features that are difficult to detect with conventional white-light colonoscopy. Many SSA cells have the V600E mutation in BRAF. We investigated whether this feature could be used with imaging methods to detect SSAs in patients. METHODS: We used phage display to identify a peptide that binds specifically to SSAs, using subtractive hybridization with HT29 colorectal cancer cells containing the V600E mutation in BRAF and Hs738...
December 21, 2016: Gastroenterology
https://www.readbyqxmd.com/read/28011177/correction-of-iron-deficiency-anaemia-in-colorectal-surgery-reduces-perioperative-transfusion-rates-a-before-and-after-study
#17
Edel M Quinn, Ellen Meland, Stacy McGinn, John H Anderson
BACKGROUND: Preoperative anaemia is a risk factor for poorer postoperative outcomes and many colorectal cancer patients have iron-deficiency anaemia. The aim of this study was to assess if a preoperative iron-deficiency anaemia management protocol for elective colorectal surgery patients helps improve detection and treatment of iron-deficiency, and improve patient outcomes. MATERIALS AND METHODS: Retrospective data was collected from 95 consecutive patients undergoing colorectal cancer surgery to establish baseline anaemia correction rates and perioperative transfusion rates...
December 21, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/28010732/the-effect-of-a-germline-mutation-in-the-apc-gene-on-%C3%AE-catenin-in-human-embryonic-stem-cells
#18
Nofar Yedid, Yael Kalma, Mira Malcov, Ami Amit, Revital Kariv, Michal Caspi, Rina Rosin-Arbesfeld, Dalit Ben-Yosef
BACKGROUND: Most cases of colorectal cancer (CRC) are initiated by inactivation mutations in the APC gene, which is a negative regulator of the Wnt-β-catenin pathway. Patients with familial adenomatous polyposis (FAP) inherit a germline mutation in one APC allele, and loss of the second allele leads to the development of polyps that will turn malignant if not removed. It is not fully understood which molecular mechanisms are activated by APC loss and when the loss of the second APC allele occurs...
December 23, 2016: BMC Cancer
https://www.readbyqxmd.com/read/28008271/early-detection-of-poor-outcome-in-patients-with-metastatic-colorectal-cancer-tumor-kinetics-evaluated-by-circulating-tumor-cells
#19
Virgílio Souza E Silva, Ludmilla Thomé Domingos Chinen, Emne A Abdallah, Aline Damascena, Jociana Paludo, Rubens Chojniak, Aldo Lourenço Abbade Dettino, Celso Abdon Lopes de Mello, Vanessa S Alves, Marcello F Fanelli
BACKGROUND: Colorectal cancer (CRC) is the third most prevalent cancer worldwide. New prognostic markers are needed to identify patients with poorer prognosis, and circulating tumor cells (CTCs) seem to be promising to accomplish this. PATIENTS AND METHODS: A prospective study was conducted by blood collection from patients with metastatic CRC (mCRC), three times, every 2 months in conjunction with image examinations for evaluation of therapeutic response. CTC isolation and counting were performed by Isolation by Size of Epithelial Tumor Cells (ISET)...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27995949/surveillance-after-curative-treatment-for-colorectal-cancer
#20
REVIEW
Eric P van der Stok, Manon C W Spaander, Dirk J Grünhagen, Cornelis Verhoef, Ernst J Kuipers
Treatments for colorectal cancer (CRC) of all stages have evolved considerably over the past two decades, resulting in improved long-term outcomes. After curative treatment, however, 30% of patients with stage I-III and up to 65% of patients with stage IV CRC develop recurrent disease. Thus, patients are routinely offered surveillance in order to detect disease recurrence at an early, asymptomatic stage, with the intention of improving survival. Nevertheless, controversy continues to surround the optimal surveillance protocols...
December 20, 2016: Nature Reviews. Clinical Oncology
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