Search results for "Rectal Cancer"
showing 10 items of 978 documents
Analysis of the Thymidylate Synthase Gene Structure in Colorectal Cancer Patients and Its Possible Relation with the 5-Fluorouracil Drug Response
2009
Thymidylate synthase (TS) catalyzes methylation of dUMP to dTMP and it is the target for the 5-Fluorouracil (5-FU) activity. Barbour et al. showed that variant structural forms of TS in tumour cell lines confer resistance to fluoropyrimidines. We planned to perform the whole TS gene structure by means of sequencing techniques in human colorectal cancer (CRC) samples to try to identify the presence of any possible TS variant form that could be responsible of fluoropyrimidines drug resistance and of the worse prognosis. We performed the TS-DNA gene sequence in 68 CRC from patients of A, B, and C Dukes' stages and different histological grade, but we did not find any mutation in the TS-DNA str…
<i>MYC</i> Dosage Compensation is Mediated by miRNA-Transcription Factor Interactions in Aneuploid Cancer
2021
Cancer complexity is consequence of genomic instability leading to aneuploidy. We hypothesize that dosage compensation of critical genes arise from systems-level properties for cancer cells to withstand the negative effects of aneuploidy. We developed a computational platform to identify a network of miRNAs and transcription factors interacting with candidate dosage-compensated genes using NCI-60 multi-omic data. We next constructed a mathematical model where the property of dosage compensation emerged for MYC and STAT3 and was dependent on the kinetic parameters of their feedback and feed-forward interactions with four miRNAs. We developed a genetic tug-of-war approach by overexpressing an…
MYC dosage compensation is mediated by miRNA-transcription factor interactions in aneuploid cancer
2021
SummaryWe hypothesize that dosage compensation of critical genes arises from systems-level properties for cancer cells to withstand the negative effects of aneuploidy. We identified several candidate genes in cancer multi-omics data and developed a biocomputational platform to construct a mathematical model of their interaction network with miRNAs and transcription factors, where the property of dosage compensation emerged for MYC and was dependent on the kinetic parameters of its feedback interactions with three micro-RNAs. These circuits were experimentally validated with a novel genetic tug-of-war technique by overexpressing an exogenous MYC leading to over-expression of the three microR…
Comorbidities Alone Do Not Explain the Undertreatment of Colorectal Cancer in Older Adults: A French Population-Based Study
2011
OBJECTIVES: To investigate the influence of comorbidities on treatment modalities of colorectal cancer according to the age of patients and French recommendations. DESIGN: Population-based study SETTING: French Digestive Cancer Registry, Burgundy. PARTICIPANTS: Two thousand nine hundred twenty-one incident colorectal cancers diagnosed between 2004 and 2007. MEASUREMENTS: The independent influence of comorbidities (recorded according to the Charlson index) on treatment was analyzed using multivariate logistic regressions controlling for age, sex, and their interaction. RESULTS: The association between comorbidities and resection for cure was significant only in patients younger than 75 (P in…
Cancer survival in Europe 1999-2007 by country and age: results of EUROCARE--5-a population-based study
2013
Background: Cancer survival is a key measure of the effectiveness of health-care systems. EUROCARE-the largest cooperative study of population-based cancer survival in Europe-has shown persistent differences between countries for cancer survival, although in general, cancer survival is improving. Major changes in cancer diagnosis, treatment, and rehabilitation occurred in the early 2000s. EUROCARE-5 assesses their effect on cancer survival in 29 European countries. Methods: In this retrospective observational study, we analysed data from 107 cancer registries for more than 10 million patients with cancer diagnosed up to 2007 and followed up to 2008. Uniform quality control procedures were a…
Post-operative ileus in elderly patients
2009
Materials and methods Data collected from 20 patients undergoing right hemicolectomy for right bowel cancer were evaluated. Patients included were divided in two groups of 10 subjects respectively, according their age. In the first group were allocated patients of age ≥ 70 years, whereas in the second group were included subjects of age ≤ 60 years. Patients affected by postoperative delirium or presenting complications that could altered the regain of intestinal motility were excluded. The time of first passage of flatus, the time of first defecation and the postoperative stay were evaluated.
Towards a European Health Monitoring System
2003
The relationships between physical activity (PA) and a wide variety of health and well-being outcomes have been well established in the last decade. Regular PA reduces the risk of premature death and disability from many medical conditions, including coronary heart disease, diabetes, colon cancer, and osteoporosis. There is also evidence for a positive relationship with well-being, particularly in alleviating depression and anxiety. Reduction of the large public health burden associated with a sedentary lifestyle has become a priority in many countries and is endorsed by the World Health Organization.
Colorectal cancer survival in the USA and Europe: a CONCORD high-resolution study
2013
Journal Article; OBJECTIVES: To assess the extent to which stage at diagnosis and adherence to treatment guidelines may explain the persistent differences in colorectal cancer survival between the USA and Europe. DESIGN: A high-resolution study using detailed clinical data on Dukes' stage, diagnostic procedures, treatment and follow-up, collected directly from medical records by trained abstractors under a single protocol, with standardised quality control and central statistical analysis. SETTING AND PARTICIPANTS: 21 population-based registries in seven US states and nine European countries provided data for random samples comprising 12 523 adults (15-99 years) diagnosed with colorectal ca…
IMPROVEMENT IN REDOX HOMEOSTASIS AFTER CYTOREDUCTIVE SURGERY IN COLORECTAL ADENOCARCINOMA
2021
Colorectal cancer (CRC) as one the most common cancer type is associated with oxidative stress. Surgery is the only curative modality for early-stage CRC. The aim of this study was to evaluate the oxidative damage biomarkers as well as enzymatic and nonenzymatic antioxidants in patients with CRC before and after tumor resection and in healthy controls. 60 patients with stage I/II colorectal adenocarcinoma and 43 healthy controls were recruited in this study. We measured plasma levels of oxidative damage biomarkers, including advanced oxidation protein products (AOPP), advanced glycation end products (AGEs), malondialdehyde (MDA), and oxidized low-density lipoprotein (ox-LDL) at baseline and…
Calidad de la atención al paciente oncológico: Tiempos asistenciales recomendables entre sospecha clínica y definición del plan terapéutico en cáncer…
2012
Fundamento. Determinar tiempos recomendables para el tratamiento desde la sospecha clínica fundada en los procesos asistenciales de cáncer de mama y colorrectal considerando factibilidad y situación personal del paciente. Método. Estudio cualitativo de búsqueda de consenso entre profesionales. Primero, se revisaron mediante 4 sesiones grupales (N=19), los procesos asistenciales de cáncer de mama y cáncer colorrectal y se fijaron los tiempos deseables de ambos procesos. Segundo, mediante una modificación de la técnica Delphi (N=49), se validó la propuesta de tiempos de atención recomendables para cada proceso asistencial. Resultados. La tasa de respuesta en el estudio Delphi fue del 69% en e…