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screening colorectal cancer

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https://www.readbyqxmd.com/read/29458155/determining-risk-of-colorectal-cancer-and-starting-age-of-screening-based-on-lifestyle-environmental-and-genetic-factors
#1
Jihyoun Jeon, Mengmeng Du, Robert E Schoen, Michael Hoffmeister, Polly A Newcomb, Sonja I Berndt, Bette Caan, Peter T Campbell, Andrew T Chan, Jenny Chang-Claude, Graham G Giles, Jian Gong, Tabitha A Harrison, Jeroen R Huyghe, Eric J Jacobs, Li Li, Yi Lin, Loïc Le Marchand, John D Potter, Flora Qu, Stephanie A Bien, Niha Zubair, Robert J Macinnis, Daniel D Buchanan, John L Hopper, Yin Cao, Reiko Nishihara, Gad Rennert, Martha L Slattery, Duncan C Thomas, Michael O Woods, Ross L Prentice, Stephen B Gruber, Yingye Zheng, Hermann Brenner, Richard B Hayes, Emily White, Ulrike Peters, Li Hsu
BACKGROUND & AIMS: Guidelines for initiating colorectal cancer (CRC) screening are based on family history but do not consider lifestyle, environmental, or genetic risk factors. We developed models to determine risk of CRC, based on lifestyle and environmental factors and genetic variants, and to identify an optimal age to begin screening. METHODS: We collected data from 9748 CRC cases and 10,590 controls in the Genetics and Epidemiology of Colorectal Cancer Consortium and the Colorectal Transdisciplinary study, from 1992 through 2005...
February 16, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29458143/suv39h2-promotes-colorectal-cancer-proliferation-and-metastasis-via-tri-methylation-of-the-slit1-promoter
#2
Wendi Shuai, Jiangxue Wu, Shuai Chen, Ranyi Liu, Zhihua Ye, Chunmei Kuang, Xiang Fu, Gaoyuan Wang, Yingchang Li, Qihua Peng, Wei Shi, Yizhuo Li, Qianghua Zhou, Wenlin Huang
Suppressor of variegation 3-9 homolog 2 (SUV39H2) is a member of the SUV39H subfamily of lysine methyltransferases. Its role in colorectal cancer (CRC) proliferation and metastasis has remained unexplored. Here, we determined that SUV39H2 was upregulated in CRC tissues compared with that in adjacent non-neoplastic tissues. Further statistical analysis revealed that high SUV39H2 expression was strongly associated with distant metastasis (P = 0.016) and TNM stage (P = 0.038) and predicted a shorter overall survival (OS; P = 0...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29457677/the-contribution-of-a-negative-colorectal-screening-test-result-to-symptom-appraisal-and-help-seeking-behaviour-among-patients-subsequently-diagnosed-with-an-interval-colorectal-cancer
#3
Karen N Barnett, David Weller, Steve Smith, Robert Jc Steele, Peter Vedsted, Sheina Orbell, Sue M Moss, Jane W Melia, Julietta Patnick, Christine Campbell
BACKGROUND: Colorectal cancer (CRC) screening programmes using a guaiac faecal occult blood test (gFOBt) reduce CRC mortality. Interval cancers are diagnosed between screening rounds: reassurance from a negative gFOBt has the potential to influence the pathway to diagnosis of an interval colorectal cancer. METHODS: Twenty-six semi-structured face-to-face interviews were carried out in Scotland and England, with individuals diagnosed with an interval colorectal cancer following a negative gFOBt result...
February 19, 2018: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
https://www.readbyqxmd.com/read/29456737/distinctive-profiles-of-tumor-infiltrating-immune-cells-and-association-with-intensity-of-infiltration-in-colorectal-cancer
#4
Yugang Wu, Lei Yuan, Qicheng Lu, Haiyan Xu, Xiaozhou He
Tumor-infiltrating immune cells are heterogeneous and consist of characteristic compartments, including T helper (Th)1 and regulatory T (Treg) cells that exhibit distinctive biological functions. The present study investigated the profile of infiltrating immune cells from surgically removed tumor tissues from patients with colorectal cancer. The characteristic transcription factors of Th1 and Th2 cells, Treg cells, Th17 cells and T follicular helper (Tfh) cells were analyzed. The results demonstrated that a marked increased number of Treg cells presented in tumor infiltrates when compared with non-tumor adjacent tissues...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29456410/split-dose-bowel-preparation-improves-adequacy-of-bowel-preparation-and-gastroenterologists-adherence-to-national-colorectal-cancer-screening-and-surveillance-guidelines
#5
Stacy Bartnik Menees, H Myra Kim, Philip Schoenfeld
AIM: To quantify the impact of split-dose regimen on endoscopists' compliance with guideline recommendations for timing of repeat colonoscopy in patients with normal colonoscopy or 1-2 small polyps (< 10 mm). METHODS: A retrospective chart review of all endoscopy reports was undertaken in average-risk individuals > 50 years old with a normal screening colonoscopy and 1-2 small polyps. Data were abstracted from two time periods, pre and post-split-dose bowel preparation institution...
February 14, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29455175/when-a-polyp-is-not-a-polyp-incidental-finding-of-a-sigmoid-schwannoma-at-first-colonoscopic-screening
#6
Alexandra Leonard, Lezah P McCarthy, Danielle M Pastor
Schwannomas, peripheral nerve sheath tumours arising from Schwann cells, are often associated with inherited disorders such as neurofibromatosis. Gastrointestinal schwannomas, while rare, have been reported in those without personal or family history of neurofibromatosis. Diagnoses of these lesions, however, typically follow evaluations prompted by symptomatic presentations associated with abdominal pain, rectal bleeding, change in bowel habits or positive results on faecal occult blood tests performed for colorectal cancer screening...
February 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29454795/advances-in-crc-prevention-screening-and-surveillance
#7
Evelien Dekker, Douglas K Rex
Colorectal cancer (CRC) is amongst the most commonly diagnosed cancers and causes of death from cancer across the world. CRC can, however, be detected in asymptomatic patients at a curable stage, and several studies have shown lower mortality among patients who undergo screening compared to those who do not. Using colonoscopy in CRC screening also results in the detection of precancerous polyps that can be directly removed during the procedure, thereby reducing the incidence of cancer. In the past decade, convincing evidence has appeared that the effectiveness of colonoscopy as CRC prevention tool is associated with the quality of the procedure...
February 15, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29454559/update-on-hereditary-colorectal-cancer-improving-the-clinical-utility-of-multigene-panel-testing
#8
REVIEW
Marie Lorans, Eryn Dow, Finlay A Macrae, Ingrid M Winship, Daniel D Buchanan
Colorectal cancer (CRC), one of the most common cancers, is a major public health issue globally, especially in Westernized countries. Up to 35% of CRCs are thought to be due to heritable factors, but currently only 5% to 10% of CRCs are attributable to high-risk mutations in known CRC susceptibility genes, predominantly the mismatch repair genes (Lynch syndrome) and adenomatous polyposis coli gene (APC; familial adenomatous polyposis). In this era of precision medicine, high-risk mutation carriers, when identified, can be offered various risk management options that prevent cancers and improve survival, including risk-reducing medication, screening for early detection, and surgery...
January 11, 2018: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/29454541/participants-physicians-or-programmes-participants-educational-level-and-initiative-in-cancer-screening
#9
REVIEW
Barbara Willems, Piet Bracke
This study is an in-depth examination of at whose initiative (participant, physician or screening programme) individuals participate in cervical, breast and colorectal cancer screening across the EU-28. Special attention is paid to (1) the association with educational attainment and (2) the country's cancer screening strategy (organised, pilot/regional or opportunistic) for each type of cancer screened. Data were obtained from Eurobarometer 66.2 'Health in the European Union' (2006). Final samples consisted of 10,186; 5443 and 9851 individuals for cervical, breast, and colorectal cancer, respectively...
February 12, 2018: Health Policy
https://www.readbyqxmd.com/read/29451980/tri-layer-polymeric-shells-containing-magnetite-nanocarrier-mediated-lcs-1-delivery-for-synthetic-lethal-therapy-of-blm-defective-colorectal-cancer-cells
#10
Anuradha Gupta, Anas Ahmad, Hardeep Singh, Sharanjeet Kaur, Neethu K M, Md Meraj Ansari, Govindasamy Jayamurugan, Rehan Khan
Synthetic lethality is a molecular targeted therapy for selective killing of cancer cells. We exploited a lethal interaction between Superoxide dismutase1 inhibition and Bloom syndrome gene product (BLM) defect for the treatment of colorectal cancer (CRC) cells (HCT 116) with lung cancer screen-1 (LCS-1) loaded customized nanocarrier. LCS-1 has poor aqueous solubility. To overcome its limitations, customized nanocarrier (NC), composed of magnetite core coated with three polymeric shells namely, aminocellulose, branched poly(amidoamine) and paraben-PEG, was developed for encapsulating LCS-1...
February 16, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29450635/screening-in-spouses-of-colorectal-cancer-patients-a-missed-opportunity
#11
Ker-Kan Tan, Tian-Zhi Lim, Emily Chew, Wen-Min Chow, Nan Luo, Mee-Lian Wong, Gerald Choon-Huat Koh
BACKGROUND: Spouses of colorectal cancer (CRC) patients could be at increased risk of developing CRC due to shared lifestyle habits with the patients which is a notable risk factor. This study explores the various issues surrounding CRC screening among these spouses. METHODS: A mixed method study comprising in-depth qualitative semi-structured interviews followed by structured quantitative questionnaire was administered to spouses who accompanied CRC patients during their appointments, from January 2016 to February 2017...
February 15, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29450468/activity-and-safety-of-cetuximab-plus-modified-folfoxiri-followed-by-maintenance-with-cetuximab-or-bevacizumab-for-ras-and-braf-wild-type-metastatic-colorectal-cancer-a-randomized-phase-2-clinical-trial
#12
Chiara Cremolini, Carlotta Antoniotti, Sara Lonardi, Giuseppe Aprile, Francesca Bergamo, Gianluca Masi, Roberta Grande, Giuseppe Tonini, Claudia Mescoli, Giovanni Gerardo Cardellino, Luigi Coltelli, Lisa Salvatore, Domenico Cristiano Corsi, Cristiana Lupi, Donatello Gemma, Monica Ronzoni, Emanuela Dell'Aquila, Federica Marmorino, Francesca Di Fabio, Maria Laura Mancini, Lorenzo Marcucci, Gabriella Fontanini, Vittorina Zagonel, Luca Boni, Alfredo Falcone
Importance: The combination of a triple-drug chemotherapy regimen with an anti-epidermal growth factor receptor (EGFR) agent as a first-line treatment of metastatic colorectal cancer (mCRC) showed promising activity along with safety concerns in single-arm phase 2 trials. The role of maintenance following chemotherapy and anti-EGFR and the optimal regimen to be adopted are not established. Objectives: To evaluate the activity and safety of cetuximab plus modified FOLFOXIRI (mFOLFOXIRI) and explore the role of maintenance with cetuximab or bevacizumab in RAS and BRAF wild-type mCRC...
February 15, 2018: JAMA Oncology
https://www.readbyqxmd.com/read/29443735/identification-of-gene-expression-models-for-laryngeal-squamous-cell-carcinoma-using-co-expression-network-analysis
#13
Chun-Wei Yang, Shu-Fang Wang, Xiang-Li Yang, Lin Wang, Lin Niu, Ji-Xiang Liu
One of the most common head and neck cancers is laryngeal squamous cell carcinoma (LSCC). LSCC exhibits high mortality rates and has a poor prognosis. The molecular mechanisms leading to the development and progression of LSCC are not entirely clear despite genetic and therapeutic advances and increased survival rates. In this study, a total of 116 differentially expressed genes (DEGs), including 11 upregulated genes and 105 downregulated genes, were screened from LSCC samples and compared with adjacent noncancerous...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29441568/evaluation-of-the-benefits-harms-and-cost-effectiveness-of-potential-alternatives-to-ifobt-testing-for-colorectal-cancer-screening-in-australia
#14
Jie-Bin Lew, D James, B St John, Finlay A Macrae, Jon D Emery, Hooi C Ee, Mark A Jenkins, Emily He, Paul Grogan, Michael Caruana, Diana Sarfati, Marjolein Je Greuter, Veerle Mh Coupé, Karen Canfell
The Australian National Bowel Cancer Screening Program (NBCSP) will fully roll-out 2-yearly screening using immunochemical Faecal Occult Blood Test (iFOBT) in people aged 50-74 years by 2020. In this study, we aimed to estimate the comparative health benefits, harms, and cost-effectiveness of screening with iFOBT, versus other potential alternative or adjunctive technologies. A comprehensive validated microsimulation model, Policy1-Bowel, was used to simulate a total of 13 screening approaches involving use of iFOBT, colonoscopy, sigmoidoscopy, computed tomographic colonography (CTC), faecal DNA (fDNA) and plasma DNA (pDNA), in people aged 50-74 years...
February 14, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29440929/role-of-intestinal-flora-in-colorectal-cancer-from-the-metabolite-perspective-a-systematic-review
#15
REVIEW
Shuwen Han, Jianlan Gao, Qing Zhou, Shanshan Liu, Caixia Wen, Xi Yang
Colorectal cancer is one of the most common human malignant tumors. Recent research has shown that colorectal cancer is a dysbacteriosis-induced disease; however, the role of intestinal bacteria in colorectal cancer is unclear. This review explores the role of intestinal flora in colorectal cancer. In total, 57 articles were included after identification and screening. The pertinent literature on floral metabolites in colorectal cancer from three metabolic perspectives - including carbohydrate, lipid, and amino acid metabolism - was analyzed...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29438375/telomere-length-and-genetics-are-independent-colorectal-tumour-risk-factors-in-an-evaluation-of-biomarkers-in-normal-bowel
#16
Ceres Fernandez-Rozadilla, Christiana Kartsonaki, Connor Woolley, Michael McClellan, Deb Whittington, Gareth Horgan, Simon Leedham, Skirmantas Kriaucionis, James East, Ian Tomlinson
BACKGROUND: Colorectal cancer (CRC) screening might be improved by using a measure of prior risk to modulate screening intensity or the faecal immunochemical test threshold. Intermediate molecular biomarkers could aid risk prediction by capturing both known and unknown risk factors. METHODS: We sampled normal bowel mucosa from the proximal colon, distal colon and rectum of 317 individuals undergoing colonoscopy. We defined cases as having a personal history of colorectal polyp(s)/cancer, and controls as having no history of colorectal neoplasia...
February 13, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29436791/promoter-hypermethylation-of-the-eyes-absent-4-gene-is-a-tumor-specific-epigenetic-biomarker-in-iranian-colorectal-cancer-patients
#17
Matineh Barati Bagerabad, Sahar Tavakolian, Mohammad Reza Abbaszadegan, Mohammad Amin Kerachian
The aim of this study was to investigate whether hypermethylation of Eyes Absent 4 (EYA4) is also implicated in Iranian Colorectal Cancer (CRC) patients or not. From fresh frozen tissues, samples from 38 paired (cancer and normal) CRC tissue specimens were used in this study, the DNA was isolated, sodium bisulfite treated and analyzed by methylation-specific polymerase (MSP) chain reaction using primers specific for unmethylated or methylated promoter sequences of the EYA4 gene. We also analyzed EYA4 mRNA expression using real time RT-PCR...
January 2018: Acta Medica Iranica
https://www.readbyqxmd.com/read/29435309/fecal-immunochemical-tests-in-combination-with-blood-tests-for-colorectal-cancer-and-advanced-adenoma-detection-systematic-review
#18
REVIEW
Tobias Niedermaier, Korbinian Weigl, Michael Hoffmeister, Hermann Brenner
Background: Colorectal cancer (CRC) is a common but largely preventable cancer. Although fecal immunochemical tests (FITs) detect the majority of CRCs, they miss some of the cancers and most advanced adenomas (AAs). The potential of blood tests in complementing FITs for the detection of CRC or AA has not yet been systematically investigated. Methods: We conducted a systematic review of performance of FIT combined with an additional blood test for CRC and AA detection versus FIT alone...
February 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29435126/quantitative-metabolomics-for-investigating-the-value-of-polyamines-in-the-early-diagnosis-and-therapy-of-colorectal-cancer
#19
Ran Liu, Xiaohui Lin, Zuojing Li, Qing Li, Kaishun Bi
As an important biomarker for cancer, polyamine levels in body fluid could be employed for monitoring the colorectal cancer (CRC), however the role of polyamines in the development and therapeutics phases of CRC remains uncertain. In this paper, the relationship between polyamines and CRC development and therapeutics had been investigated by the study of changes in plasma polyamine levels during the precancerous, developmental and treatment phases of CRC. After inducing CRC in Wistar rats by intraperitoneal injection of 1, 2-dimethylhydrazine, the animals were given a traditional Chinese medicine, Aidi injections...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29434658/healthy-living-and-cancer-evidence-from-uk-biobank
#20
Peter C Elwood, Alex Whitmarsh, John Gallacher, Anthony Bayer, Richard Adams, Luke Heslop, Janet Pickering, Gareth Morgan, Julieta Galante, Sunil Dolwani, Marcus Longley, Zoe E Roberts
Context: UK Biobank is a prospective study of half a million subjects, almost all aged 40-69 years, identified in 22 centres across the UK during 2006-2010. Objective: A healthy lifestyle has been described as 'better than any pill, and no side effects [5]. We therefore examined the relationships between healthy behaviours: low alcohol intake, non-smoking, healthy BMI, physical activity and a healthy diet, and the risk of all cancers, colon, breast and prostate cancers in a large dataset...
2018: Ecancermedicalscience
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