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Colorectal cancer blood tests

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https://www.readbyqxmd.com/read/28938643/serum-peptidome-profiling-for-the-diagnosis-of-colorectal-cancer-discovery-and-validation-in-two-independent-cohorts
#1
Hao Wang, Chenghua Luo, Shengtao Zhu, Honghong Fang, Qing Gao, Siqi Ge, Haixia Qu, Qingwei Ma, Hongwei Ren, Youxin Wang, Wei Wang
Colorectal cancer (CRC) is one of the most common malignant neoplasms worldwide. Except for the existing fecal occult blood test, colonoscopy and sigmoidoscopy, no widely accepted in vitro diagnostic methods have been available. To identify potential peptide biomarkers for CRC, serum samples from a discovery cohort (100 CRC patients and 100 healthy controls) and an independent validation cohort (91 CRC patients and 91 healthy controls) were collected. Peptides were fractionated by weak cation exchange magnetic beads (MB-WCX) and analysed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS)...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28933963/delayed-sample-arrival-at-the-laboratory-does-not-lead-to-more-false-negatives-in-the-danish-population-screening-for-colorectal-cancer
#2
Anette Tarp Hansen, Elke Hoffmann-Lücke, Betina Klint Nielsen, Birgitte Reinholdt, Peter Hindersson, Karin Heidemann, Nete Hornung
In Denmark, biennial population screening for colorectal cancer was introduced in 2014 for all aged 50-74 years. Five laboratories representative for the regional division of Denmark perform the immunochemical testing of faecal occult blood in the screening samples (iFOBT, OC-Sensor (Eiken Chemical, cut-off 100 µg/L)). In July 2016, a new agreement on the public post-delivery entailed an increased lag time (five days) from the screening participant drops the screening sample into a mail-box until sample arrival at the laboratories...
September 21, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28931501/cancer-predisposition-cascade-screening-for-hereditary-breast-ovarian-cancer-and-lynch-syndromes-in-switzerland-study-protocol
#3
Maria C Katapodi, Valeria Viassolo, Maria Caiata-Zufferey, Christos Nikolaidis, Rosmarie Bührer-Landolt, Nicole Buerki, Rossella Graffeo, Henrik Csaba Horváth, Christian Kurzeder, Manuela Rabaglio, Michael Scharfe, Corinne Urech, Tobias E Erlanger, Nicole Probst-Hensch, Karl Heinimann, Viola Heinzelmann-Schwarz, Olivia Pagani, Pierre O Chappuis
BACKGROUND: Breast, colorectal, ovarian, and endometrial cancers constitute approximately 30% of newly diagnosed cancer cases in Switzerland, affecting more than 12,000 individuals annually. Hundreds of these patients are likely to carry germline pathogenic variants associated with hereditary breast ovarian cancer (HBOC) or Lynch syndrome (LS). Genetic services (counseling and testing) for hereditary susceptibility to cancer can prevent many cancer diagnoses and deaths through early identification and risk management...
September 20, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28929777/is-it-possible-to-predict-the-presence-of-colorectal-cancer-in-a-blood-test-a-probabilistic-approach-method
#4
José Manuel Navarro Rodríguez, Javier Gallego Plazas, Rafael Calpena Rico, Fernando Borras Rocher, José Antonio Ruiz Macia, Miguel Ángel Morcillo Ródenas
INTRODUCTION: The assessment of the state of immunosurveillance (the ability of the organism to prevent the development of neoplasias) in the blood has prognostic implications of interest in colorectal cancer. We evaluated and quantified a possible predictive character of the disease in a blood test using a mathematical interaction index of several blood parameters. The predictive capacity of the index to detect colorectal cancer was also assessed. METHODS: We performed a retrospective case-control study of a comparative analysis of the distribution of blood parameters in 266 patients with colorectal cancer and 266 healthy patients during the period from 2009 to 2013...
September 18, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28922422/psychological-effects-of-the-intensified-follow-up-of-the-ceawatch-trial-after-treatment-for-colorectal-cancer
#5
Zhuozhao Zhan, Charlotte J Verberne, Edwin R van den Heuvel, Irene Grossmann, Adelita V Ranchor, Theo Wiggers, Geertruida H de Bock
BACKGROUND: The aim of the study was to evaluate psychological effects of the state-of-art intensified follow-up protocol for colorectal cancer patients in the CEAwatch trial. METHOD: At two time points during the CEAwatch trial questionnaires regarding patients' attitude towards follow-up, patients' psychological functioning and patients' experiences and expectations were sent to participants by post. Linear mixed models were fitted to assess the influences and secular trends of the intensified follow-up on patients' attitude towards follow-up and psychological functioning...
2017: PloS One
https://www.readbyqxmd.com/read/28912018/association-between-germline-mutations-in-brf1-a-subunit-of-the-rna-polymerase-iii-transcription-complex-and-hereditary-colorectal-cancer
#6
Fernando Bellido, Nadine Sowada, Pilar Mur, Conxi Lázaro, Tirso Pons, Rafael Valdés-Mas, Marta Pineda, Gemma Aiza, Silvia Iglesias, José Luís Soto, Miguel Urioste, Trinidad Caldés, Milagros Balbín, Pilar Blay, Daniel Rueda, Mercedes Durán, Alfonso Valencia, Victor Moreno, Joan Brunet, Ignacio Blanco, Matilde Navarro, George A Calin, Guntram Borck, Xose S Puente, Gabriel Capellá, Laura Valle
BACKGROUND & AIMS: Although there is a genetic predisposition to colorectal cancer (CRC), few of the genes that affect risk have been identified. We performed whole-exome sequence analysis of individuals in a high-risk family without mutations in genes previously associated with CRC risk to identify variants associated with inherited CRC. METHODS: We collected blood samples from 3 relatives with CRC in Spain (65, 62 and 40 years old at diagnosis) and perfomed whole-exome sequence analyses...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28911069/clinical-utility-of-circulating-dna-analysis-for-rapid-detection-of-actionable-mutations-to-select-metastatic-colorectal-patients-for-anti-egfr-treatment
#7
A R Thierry, S El Messaoudi, C Mollevi, J L Raoul, R Guimbaud, D Pezet, P Artru, E Assenat, C Borg, M Mathonnet, C De La Fouchardière, O Bouché, C Gavoille, C Fiess, B Auzemery, R Meddeb, E Lopez-Crapez, C Sanchez, B Pastor, M Ychou
Background: While tumor-tissue remains the 'gold standard' for genetic analysis in cancer patients, it is challenged with the advent of circulating cell-free tumor DNA (ctDNA) analysis from blood samples. Here, we broaden our previous study on the clinical validation of plasma DNA in metastatic colorectal cancer patients, by evaluating its clinical utility under standard management care. Patients and methods: Concordance and data turnaround-time of ctDNA when compared with tumor-tissue analysis were studied in a real-time blinded prospective multicenter clinical study (n = 140 metastatic colorectal patients)...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28910267/surveillance-for-certain-health-behaviors-and-conditions-among-states-and-selected-local-areas-behavioral-risk-factor-surveillance-system-united-states-2013-and-2014
#8
Sonya Gamble, Tebitha Mawokomatanda, Fang Xu, Pranesh P Chowdhury, Carol Pierannunzi, David Flegel, William Garvin, Machell Town
PROBLEM: Chronic diseases and conditions (e.g., heart diseases, stroke, arthritis, and diabetes) are the leading causes of morbidity and mortality in the United States. These conditions are costly to the U.S. economy, yet they are often preventable or controllable. Behavioral risk factors (e.g., excessive alcohol consumption, tobacco use, poor diet, frequent mental distress, and insufficient sleep) are linked to the leading causes of morbidity and mortality. Adopting positive health behaviors (e...
September 15, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28894391/comment-on-fecal-occult-blood-versus-dna-testing-indirect-comparison-in-a-colorectal-cancer-screening-population
#9
COMMENT
David A Ahlquist
No abstract text is available yet for this article.
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28887191/factors-influencing-participation-in-colorectal-cancer-screening-programs-in-spain
#10
Mercedes Vanaclocha-Espi, Josefa Ibáñez, Ana Molina-Barceló, Elena Pérez, Andreu Nolasco, Rebeca Font, Francisco Pérez-Riquelme, Mariola de la Vega, Eunate Arana-Arri, MªElena Oceja, Josep Alfons Espinàs, Isabel Portillo, Dolores Salas
To analyze the sociodemographic and organizational factors influencing participation in population-based colorectal cancer screening programs (CRCSP) in Spain, a retrospective study was conducted in a cohort of people invited to participate in the first 3 screening rounds of 6 CRCSP from 2000 to 2012. Mixed logistic regression models were used to analyze the relationship between sociodemographic and organizational factors, such as the type of fecal occult blood test (FOBT) used and the FOBT delivery type. The analysis was performed separately in groups (Initial screening-first invitation, Subsequent invitation for previous never-responders, Subsequent invitation-regular, Subsequent invitation-irregular intervals)...
September 5, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28878369/peroxisome-proliferator-activated-receptor-gamma-in-obesity-and-colorectal-cancer-the-role-of-epigenetics
#11
T K Motawi, O G Shaker, M F Ismail, N H Sayed
Peroxisome proliferator-activated receptor gamma (PPARγ) is a nuclear receptor that is deregulated in obesity. PPARγ exerts diverse antineoplastic effects. Attempting to determine the clinical relevance of the epigenetic mechanisms controlling the expression PPARγ and susceptibility to colorectal cancer (CRC) in obese subjects, this study investigated the role of some microRNAs and DNA methylation on the deregulation of PPARγ. Seventy CRC patients (34 obese and 36 lean), 22 obese and 24 lean healthy controls were included...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28871484/epr-oximetry-sensor-developing-a-tam-derivative-for-in-vivo-studies
#12
Agnieszka Boś-Liedke, Magdalena Walawender, Anna Woźniak, Dorota Flak, Jacek Gapiński, Stefan Jurga, Małgorzata Kucińska, Adam Plewiński, Marek Murias, Marwa Elewa, Lisa Lampp, Peter Imming, Krzysztof Tadyszak
Oxygenation is one of the most important physiological parameters of biological systems. Low oxygen concentration (hypoxia) is associated with various pathophysiological processes in different organs. Hypoxia is of special importance in tumor therapy, causing poor response to treatment. Triaryl methyl (TAM) derivative radicals are commonly used in electron paramagnetic resonance (EPR) as sensors for quantitative spatial tissue oxygen mapping. They are also known as magnetic resonance imaging (MRI) contrast agents and fluorescence imaging compounds...
September 4, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28867474/fecal-immunological-blood-test-is-more-appealing-than-the-guaiac-based-test-for-colorectal-cancer-screening
#13
Fanny Le Pimpec, Grégoire Moutel, Christine Piette, Astrid Lièvre, Jean-François Bretagne
BACKGROUND: The reasons for participation in fecal immunological testing (FIT) of subjects who were previously non-respondents to guaiac fecal occult blood testing (g-FOBT) have not been assessed. POPULATION AND METHODS: We aimed to determine the reasons for current compliance with FIT among non-responders to g-FOBT, termed "converts", in a French district. A questionnaire was returned by 170 converts aged from 55 to 75 years (response rate 75.2% after exclusions)...
August 10, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28862521/repeated-faecal-occult-blood-testing-is-associated-with-decreased-advanced-colorectal-cancer-risk-a-population-based-study
#14
Paul D James, Linda Rabeneck, Lingsong Yun, Lawrence Paszat, Nancy N Baxter, Anand Govindarajan, Lilia Antonova, Jill M Tinmouth
Objective To evaluate the association between repeated faecal occult blood testing and advanced colorectal cancer risk at population level in Canada. Methods A retrospective cohort study of all Ontario residents aged 56-74 diagnosed with colorectal cancer from 1 April 2007 to 31 March 2010, identified using health administrative data. The primary outcome was stage IV colorectal cancer, and primary exposure was faecal occult blood testing use within five years prior to colorectal cancer diagnosis. Patients were categorized into four mutually exclusive groups based on their exposure to faecal occult blood testing in the five years prior to colorectal cancer diagnosis: none, pre-diagnostic, repeated, and sporadic...
January 1, 2017: Journal of Medical Screening
https://www.readbyqxmd.com/read/28860547/elevated-mean-platelet-volume-predicts-poor-prognosis-in-colorectal-cancer
#15
Na Li, Zhiwei Yu, Xin Zhang, Tiemin Liu, Yu-Xiang Sun, Rui-Tao Wang, Kai-Jiang Yu
Altered mean platelet volume (MPV) is implicated in several malignancies. However, the clinicopathological significance and prognostic value of MPV in colorectal cancer (CRC) is still elusive. The purpose of this study was to elucidate the predictive significance of MPV in CRC. The retrospective study recruited 509 consecutive CRC patients between January 2009 and December 2009. The relationships between MPV and clinicopathological characteristics were analyzed. Kaplan-Meier method and Cox regression were used to evaluate the prognostic impact of MPV...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28856900/annals-express-the-development-of-an-artificial-stool-usable-for-the-surveillance-of-fecal-hemoglobin-testing
#16
Akira Miike, Zensuke Ogawa, Ikunosuke Sakurabayashi
Backgrounds; Fecal occult blood testing (FOBT) is an important diagnostic tool for the detection of colorectal cancer. However, it has not been standardized due to the absence of suitable specimens for surveillance. Methods; We developed a ready-to-use artificial stool made from rice flour. This new artificial stool homogeneously contains not only human hemoglobin A0(HbA0), but also glycerol as an internal standard material. After the collection of the artificial stool into a buffer, the Hb concentration in dispersed solution was measured using a method based on the peroxidase like activity of Hb...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28851318/population-based-colorectal-cancer-screening-programmes-using-a-faecal-immunochemical-test-should-faecal-haemoglobin-cut-offs-differ-by-age-and-sex
#17
Eunate Arana-Arri, Isabel Idigoras, Begoña Uranga, Raquel Pérez, Ana Irurzun, Iñaki Gutiérrez-Ibarluzea, Callum G Fraser, Isabel Portillo
BACKGROUND: The Basque Colorectal Cancer Screening Programme has both high participation rate and high compliance rate of colonoscopy after a positive faecal occult blood test (FIT). Although, colorectal cancer (CRC) screening with biannual (FIT) has shown to reduce CRC mortality, the ultimate effectiveness of the screening programmes depends on the accuracy of FIT and post-FIT colonoscopy, and thus, harms related to false results might not be underestimated. Current CRC screening programmes use a single faecal haemoglobin concentration (f-Hb) cut-off for colonoscopy referral for both sexes and all ages...
August 29, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28842164/colorectal-cancer-screening-in-rural-and-poor-resourced-communities
#18
Michael A Preston, Katherine Glover-Collins, Levi Ross, Austin Porter, Zoran Bursac, Delores Woods, Jacqueline Burton, Karen Crowell, Jonathan Laryea, Ronda S Henry-Tillman
To test the efficacy of a community-based intervention, Empowering Communities for Life (EC4L), designed to increase colorectal cancer (CRC) screening through fecal occult blood test (FOBT) in rural underserved communities in a randomized controlled trial. Participants were randomized into 3 groups (2 interventions and 1 control). Interventions were delivered by community lay health workers or by academic health professionals. The main outcome of interest was return rate of FOBT screening kit within 60 days...
August 12, 2017: American Journal of Surgery
https://www.readbyqxmd.com/read/28813112/what-do-cochrane-systematic-reviews-say-about-the-clinical-effectiveness-of-screening-and-diagnostic-tests-for-cancer
#19
André Tito Pereira Bueno, Vladimir Lisboa Capelasso, Rafael Leite Pacheco, Carolina de Oliveira Cruz Latorraca, Tiago Biachi de Castria, Daniela Vianna Pachito, Rachel Riera
CONTEXT AND OBJECTIVE: The purpose of screening tests for cancer is to detect it at an early stage in order to increase the chances of treatment. However, their unrestrained use may lead to unnecessary examinations, overdiagnosis and higher costs. It is thus necessary to evaluate their clinical effects in terms of benefits and harm. DESIGN AND SETTING: Review of Cochrane systematic reviews, carried out in the Discipline of Evidence-Based Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo...
July 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28812930/increasing-colorectal-cancer-screening-at-an-urban-fqhc-using-ifobt-and-patient-navigation
#20
Richard L Martin, Madelaine Tully, Allison Kos, David Frazer, Amy Williamson, Amy Conlon, James J Enser, Noelle K LoConte
INTRODUCTION: Colorectal cancer is the second leading cause of cancer death in the United States. Black Americans suffer even higher incidence and death rates than the general population. Genetics and patient perceptions explain some of this difference, however, modifiable health care system factors such as lack of access to colon cancer screening also contribute. Partnering an academic health center with local community groups, we piloted a colorectal cancer screening program at a Federally Qualified Health Center (FQHC) serving predominately low socioeconomic status Black Americans...
September 2017: Health Promotion Practice
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